Способ управления устройством защитного отключения

Способ управления устройством защитного отключения, в котором включают автоматический выключатель с катушкой независимого расцепителя и подают питание на защищаемую и измерительную цепи, измеряют дифференциальный ток и формируют отключающий сигнал, который подают на катушку независимого расцепителя, отличающийся тем, что отключающий сигнал формируют в один или несколько интервалов времени, если на предыдущем интервале не происходит отключение автоматического выключателя, то на следующем интервале времени увеличивают отключающий сигнал, а величину отключающего сигнала на каждом интервале времени выбирают в зависимости от требуемого суммарного времени отключения защищаемой электрической цепи.

MINIATURSCHALTAUTOMAT MIT IN Z-ACHSENRICHTUNG ZUSAMMENSETZBAREM AUSLÖSEMECHANISMUS

AUSLOESEMAGNET MIT SCHNEIDENLAGERUNG.

NIEDERSPANNUNGS-LEISTUNGSSCHALTER MIT EINEM INFORMATIONSSPEICHER

MIT EINEM MEHRPOLIGEN LEITUNGSSCHUTZSCHALTER KOMBINIERTER FEHLERSTROMSCHUTZSCHALTER

STECKDOSE, INSBESONDERE IN EINE WANDSTECKDOSE EINSTECKBARE STECKDOSE MIT STECKER

Elektronischer Schutzschalter

Niederspannungs-Leistungsschalter mit einem Bemessungsstromstecker

A rating plug may conventionally be provided with an electrical coding such that unsuitable identification of the rating plug is not transmitted to the trigger unit, but rather the attempt to make use of such a rating plug leads to a signal. According to the invention, the signalling unit may be arranged on the housing of the low-voltage power breaker (1), or on the trigger unit (5). Thus, in addition to the conventional solution, the states wrong rating plug, wrong contact connection and defective rating plug may be recorded.

Improvements in or relating to electric switches

... 396,237. Protective cut-out arrangements and automatic circuit-breakers. KRATZ, H., 62, Baerler Strasse, Moers, Germany. Sept. 15, 1932, No. 25732. Convention date, Sept. 15; 1931. [Class 38 (v).] A circuit-breaker for use with electric motors, transformers, &c. has the electromagnetic or thermal tripping devices arranged to be operable by 'two coils one of which is connected with its one end to the neutral point of the apparatus and the second with its one end to the body of the apparatus, the other ends of both coils being connected to the neutral point of the supply. As shown in Fig. 1 the circuit-breaker 5 controlling the connection of the motor 6 to the three-phase supply 2, 3, 4 is operated by coils 8a, 8b the former of which is connected between the neutral wire 1 of the supply and the neutral point 6a of the motor windings and the other of which is connected between the supply neutral wire and the motor frame. The circuit of the coil 8b includes an adjustable resistance 12 which ...

Trip unit actuator

A trip unit comprises an actuator 1 that includes: a cylindrical pin 3 axially moving in a closed chamber 101 and extending via an opening 21 sealed by means such as plastics bearing 31, and is biased outward, by means such as spring 41; a permanent magnet 6 surrounding the pin in a latched position; a coil 51 supported by an iron coil housing 5; and a cylindrical housing 2 containing the actuator. A disc 61 adjacent the magnet can hold the pin latched by an attraction force that is adjusted by axially displacing an annulus 22 on the housing 22. The housing can be closed by crimping the edge of a cup-shaped cylindrical housing 2 about the actuator. The actuator can be used to operate an earth leakage trip, the movable parts inside the housing are protected from dust from the environment and are positioned to prevent contamination by iron wear.

Improvements in and relating to earth leakage circuit breakers

An ELCB which may be embodied in a plug includes first and second contacts 11, 12 which are bridged by a metal plate 14 slidably mounted on a spindle 13. The ELCB is set by operating a pushbutton 16 to urge the plate 14 against the force of spring 15 such that the end 14b of the plate engages contact 12, where it is held by a cam latch 18 controlled by a solenoid 17. When the push button is released the spring 15 urges the end 14a of the plate against contact 11. When an earth leakage current is detected, the cam latch 18 is withdrawn and the plate 14 pivots to disengage from the contacts 11, 12. The ELCB is trip free in that upon depression of the pushbutton 16, it is not possible to bridge contacts 11, 12 with the member 14 whilst the cam 18 is withdrawn. The plug arrangement is further rendered trip free by arranging the pushbutton 16 in a recess 25 in a surface which mates with a socket, so that the pushbutton can only be operated when the plug is removed from the socket. ...

Shock hazard protection system

A shock hazard protection system disconnects an electrical source from a load in response to the detection of a shock hazard condition at the load. A solenoid-type electromechanical mechanism acts as the circuit breaking or interrupting means.

ELECTRICAL SAFETY DEVICE

MIT EINEM LEITUNGSSCHUTZSCHALTER KOMBINIERTER FEHLERSTROMSCHUTZSCHALTER

EARTH-LEAKAGE CIRCUIT BREAKER

EARTH-LEAKAGE CIRCUIT BREAKER WITHOUT SUM CURRENT TRANSFORMERS

EARTH-LEAKAGE CIRCUIT BREAKER

EARTH-LEAKAGE CIRCUIT BREAKER

EARTH-LEAKAGE CIRCUIT BREAKER WITHOUT SUM CURRENT TRANSFORMERS

ELECTRONIC PROTECTIVE SWITCH

MAGNET CAUSE FOR EARTH-LEAKAGE CIRCUIT BREAKERS.

EARTH-LEAKAGE CIRCUIT BREAKER.

ELECTROMAGNETIC ACTUATOR OF THE TYPE OF RELAY.

CONTACTOR

Arrangement for the fault current monitoring of a branched in or multi-phase net

SHOCK HAZARD PROTECTION SYSTEM

GROUND FAULT PROTECTED ELECTRICAL RECEPTACLE

RESIDUAL CURRENT CIRCUIT BREAKER

A method for tripping a residual current device, a secondary protection device for tripping a residual current device, an electrical protection unit and a mounting bracket

This disclosure relates to a method for tripping a residual current device comprising a detection of leakage characterised in that the detection of leakage creates a current imbalance between an active conductor and a neutral conductor of the residual current device, a secondary protection device for tripping a residual current device, an electrical protection unit comprising a residual current device and a secondary protection device and a mounting bracket arranged for mounting one or more DIN-rail mountable electrical devices.

EARTH FAULT PROTECTION SWITCH

Reverse current relay

ELECTRIC WALL RECEPTACLE WITH GROUND FAULT PROTECTION

GROUND FAULT CIRCUIT INTERRUPTER

UNITARY MEMBER WITH MULTIPLE OUTLETS HAVING SURGE PROTECTION CIRCUITRY

A unitary body has both a plurality of outlets and protection circuitry integrated therein. An indicator device in the body provides a visual signal to indicate normal operation of the outlets. The protection circuitry may be a transient voltage surge suppressor (TVSS), a ground-fault circuit interrupter (GFCI), and/or an integrated circuit breaker. Another indicator device provides an audible signal in accordance with failure of the protection circuit. In a particular embodiment, the body has six outlets and the protection circuitry is a transient voltage surge suppressor (TVSS). The visual signal is provided by an LED, and an alarm buzzer sounds when the TVSS is disabled.

CIRCUIT INTERRUPTING APPARATUS WITH REMOTE TEST AND RESET ACTIVATION

The present disclosure relates to resettable circuit interrupting devices and apparatus capable of being tested and reset from remote locations, and in particular to portable circuit interrupting devices and apparatus capable of being tested and reset from remote locations.

GROUND FAULT CIRCUIT INTERRUPTER

A signaling system employing indicator lamp means and an audible alarm is employed to remind a user to periodically test his GFCIs and to provide information regarding the status of the GFCI. The power lines that supply the GFCI with power are also coupled to the circuits on the PCB to disconnect power to those circuits of the GFCI that trips due to faults or tests.

GAPPED GROUND SAFETY DEVICE

A gapped ground safety device is provided to protect workers on de-energized underground distribution cable from ground faults or accidental energization. The device comprises a combination precision gap and an MOV surge arrester.

EXTERIOR WALL LAMPS

An exterior light fixture includes a housing configured to be mounted to an exterior vertical wall. A luminaire is connected via a projecting arm to the housing and powered by electrical wires running therethrough. The housing includes a rotatable door which, when rotated from a closed position to an open position, exposes a ground fault interrupter circuit providing preferably three-pronged sockets to deliver grounded, protected AC current for consumer use.

GROUND FAULT MODULE FOR GROUND FAULT CIRCUIT BREAKER

GROUND FAULT MODULE FOR GROUND FAULT CIRCUIT BREAKER A ground fault module is disclosed for ease of assembly within a ground fault circuit breaker. The module houses the pre-assembled signal processor module, which contains the ground fault circuit interruption logic, along with the mechanical components required for translating the trip initiating response from the signal processor solenoid to the circuit breaker operating mechanism. The ground fault test button and related circuitry are also supported within the ground fault module.

SHOCK HAZARD PROTECTION SYSTEM

SHOCK HAZARD PROTECTION SYSTEM The present invention teaches a new and novel system for protecting people and property against electrical shock. The invention includes a number of preferred and other embodiments which have this as their goal, but which represent a number of distinctive and novel approaches to solving prior art problems. By way of example only, and without limiting the scope of this invention, these approaches include novel immersion detecting circuits, broken wire test circuits, electromechanical circuit breaking means including coil/plunger arrangements, and relay circuit breaking mechanisms cooperative with associated circuitry, all of which are able to be incorporated as a system wholly within the load (appliance) and its associated cord set (including a "plug").

REMOTE CONTROL SYSTEM

The present invention teaches a remote control system, also capable of designation as a universal switch receptacle system, which is usable in conjunction with remote control devices as well as ground fault circuit interrupting systems. Features include, without limitation, a mounting strap which supports ground terminals while also serving as a magnetic circuitry conduit; a novel flip-flop cam arrangement which enables alternate making and breaking of a circuit; and space-saving means for supporting the cam arrangement about an axis of rotation which coincides with a ground prong insertion axis.

MULTIPLE DUTY COMPONENTS OF A GROUND FAULT RECEPTACLE

MULTIPLE DUTY COMPONENTS OF A GROUND FAULT RECEPTACLE An electric receptacle for ordinary household or trade size junction boxes having a complete ground fault circuit interrupter incorporated in the receptacle, including electronic components to detect a ground fault on the load side of such receptacle, and a coil and trip mechanism which is actuated when a ground fault is detected. A number of the components are utilized in this invention in ways that enable them to perform multiple functions eliminating the need for separate components and the space they would require, thereby making it possible to install a complete ground fault circuit interrupter in a smaller space within a receptacle.

ELECTRIC WALL RECEPTACLE WITH GROUND FAULT PROTECTION

ELECTRIC WALL RECEPTACLE WITH GROUND FAULT PROTECTION An electric receptacle with ground fault protection characterized by an insulating housing of rectangular configuration adapted for mounting in a wall outlet box. The housing comprises opposite end and edge walls with front and rear sides open and with a transverse partition dividing a chamber formed by the ends and side walls into a pair of side-by-side compartments. Partition aperture means between the compartments and the first compartment communicating with the open front side and the second compartment communicating with the open rear side. At least one portion of the partition being nearer the front side than the remaining portions. Receptacle components are disposed in the first compartment and electronic components are disposed in the second compartment, and the components in each compartment are so disposed as to minimize the space requirements for the receptacle.

MAGNETIC FLUX SHIFTING GROUND FAULT TRIP INDICATOR

MAGNETIC FLUX SHIFTING GROUND FAULT TRIP INDICATOR A low energy mechanically driven and electromagnetically actuated ground fault trip indicator is taught. The ground fault trip indicator utilizes the magnetic flux of a permanent magnet in a first flux path to maintain a movable armature biased against a spring. An electromagnet is disposed to provide magnetic flux in opposition to the magnetic flux of the permanent magnet. The electromagnet is not energized for providing the opposing flux until a pulse is received from an appropriate ground fault trip detecting circuit. When the appropriate pulse of energy is applied to the electromagnet, a portion of the flux of the permanent magnet is cancelled allowing the spring to force the armature into a new position. In this position the flux of the permanent magnet is reestablished in a second flux path. When the indicator is in the latter position indication of the occurrence of a ground fault is given.

INTERRUPTER MECHANISM FOR A GROUND FAULT CIRCUIT INTERRUPTER

LEAKAGE CURRENT DETECTION INTERRUPTER WITH SENSOR MODULE FOR DETECTING ABNORMAL NON-ELECTRICAL CONDITIONS

In the present invention the basic detection and interruption components of a Leakage Current Detector Interrupter (LCDI) in combination with a sensor module are coupled to a conductor such as a shield conductor of an extension or appliance cord having line, neutral, possibly ground and shield conductors to provide a new improved type of detector which interrupts current to a load when an abnormal non-electrical condition such as smoke, high heat, high or low pressure, etc. is detected by the sensor module. The sensor module in combination with the LCDI provides, either singularly or in combination, the following advantages: A sensor module that need not be rated to carry the full electrical load required by the appliance because the LCDI can operate with a nominal low current signal; Prevents the LCDI from being reset should the device become inoperative (reset lockout); Tests the integrity of the conductor from the sensor module within the extension or appliance cord, in addition to testing ...

AIRCRAFT APPLICABLE GROUND FAULT CIRCUIT INTERRUPTER

The aircraft applicable ground fault circuit interrupter interrupts a circuit when a current imbalance is sensed. The circuit interrupter includes a power supply, a sensor for sensing a current imbalance at the line side of the circuit, a logic controller, and a power controller. The power supply provides power to the sensor, logic controller, and the power controller. The logic controller receives input from the sensor, and the power controller receives input from the logic controller, and interrupts power to the load side of the circuit when the sensor senses a current imbalance. Power interruption due to a sensed current imbalance is maintained until the power source is cycled. The circuit interrupter is preferably autonomous, requiring no additional signals, imputs, or sources of power.

ELECTRIC WALL RECEPTACLE WITH GROUND FAULT PROTECTION

GROUND FAULT INTERRUPTER

A ground fault interrupter including a zero-phase current transformer configured to detect unbalanced current flowing in electric lines. A switch is provided in the electric lines. A detection resistor is connected in parallel to the zero-phase current transformer and configured to convert current outputted from the zero-phase current transformer to voltage. A controller is configured to determine based on the voltage of the detection resistor whether an electric leak occurs and to open the switch when the controller determines that an electric leak occurs. At least one filter is provided between the detection resistor and the controller and is configured to remove high frequency elements in the voltage of the resistor. The at least one filter includes an input side resistor connected in series to the controller and configured to limit current input to the controller; and a capacitor connected in parallel to the controller.

A SWITCHING DEVICE

In a switching device, such as a residual current circuit breaker or a combination switch, for example, for interrupting and switching at least one line (L1, L2, L3, N), having a tripping device (2) which is independent of the system voltage, having a tripping element (3) associated with said tripping device, such as a tripping relay, for example, and having a tripping device (9) which is dependent on the system voltage, the invention proposes, for simplifying the design, for reducing the required assemblies, for easy adaptability and for an increased functional reliability, that the tripping device (9) which is dependent on the system voltage comprises means for tripping the tripping element (3), which is associated with the tripping device (2) which is independent of the system voltage.

ELECTRICAL WIRING DEVICE

A circuit interrupting device includes an input conductor for electrically connecting to an external power supply, a load conductor for electrically connecting to a downstream load, a face conductor for electrically connecting to an external load, and a brush conductor in electrical communication with the input conductor and movable between a closed position and an open position. The brush conductor includes a second portion offset from a first portion such that a first terminal and a second terminal are positioned on separate planes. When the brush conductor is in the closed position, the first terminal contacts the load terminal and the second terminal contacts the face terminal to provide electrical communication between the input conductor, the load conductor, and the face conductor. When the brush conductor is in the open position, the first terminal is spaced apart from the load terminal and the second terminal is spaced apart from the face terminal.

CIRCUIT BREAKER WITH PLUG ON NEUTRAL CONNECTION LOCK-OUT MECHANISM

A circuit breaker is disclosed that has a neutral lock-out mechanism that prevents electrical connection between a power source and a load when a neutral rail is disconnected from the circuit breaker. The circuit breaker has a line connector, a load connector and a plug-on neutral line connector. A trip mechanism has an on position allowing electrical connection between the line connector and the load connector. The trip mechanism has a tripped position interrupting electrical connection between the line connector and the load connector in response to detection of a fault condition such as a short circuit. The trip mechanism also has an off position which is required before resetting the trip mechanism to the on position. A trip link is coupled to the trip mechanism. The trip link has a first position that prevents the trip mechanism from being reset to the on position. The trip link has a second position allowing the trip mechanism to be reset to the on position. A neutral lock mechanism ...

INTEGRATED PROTECTION SYSTEM FOR ELECTRICAL DISTRIBUTION

An integrated protection system for an electrical distribution system including a panelboard for receiving power from a utility source and distributing the power to a plurality of branch circuits each having line and neutral conductors for delivering the power to a load. The integrated protection system comprises a plurality of arcing-fault detectors and line interrupters attached to positions in the panelboard. The arcing-fault detectors detect the occurrence of an arcing fault in either of the branch circuits, while the line interrupters disconnect the load from the power source in response to the detection of an arcing fault in either of the branch circuits. The line interrupters and arcing-fault detectors may comprise separate modules, each being connected to one of the positions in panelboard or-being attached externally to the other module. Alternatively, the line interrupters and arcing-fault detectors may be combined within individual modules, each individual module being connected ...

REINSTALLABLE CIRCUIT INTERRUPTING DEVICE WITH VIBRATION RESISTANT MISWIRE PROTECTION

A method and apparatus for preventing a GFCI device from being miswired is provided where the GFCI device is enabled to enter a latched state only after the GFCI device is correctly wired to a power supply. An exemplary GFCI device includes a latch assembly provided with a rigid electrically conducting bar connected thereto such that when a user presses a reset button provided on the GFCI device, the latch assembly is moved toward a pair of contacts provided as part of a reset circuit to initiate a reset operation. When the electrically conducting bar on the latch assembly connects the pair of contacts, the reset circuit is closed and an actuator is activated to place the GFCI device in the latched, reset, condition. If the GFCI device is correctly wired, the closed reset circuit will cause a firing member to move from a first position to a second position enabling the latch assembly to enter the latched state. The exemplary latch assembly is connected to a resilient biasing member that ...

CIRCUIT INTERRUPTING DEVICE WITH AUTOMATIC END OF LIFE TEST

The present invention provides to a circuit interrupting device, particularly a ground fault circuit interrupter (GFCI), with a test circuit which is capable of automatically generating a simulated leakage current to detect whether the service life of the circuit interrupting device has ended, i.e., whether the main components of the device are working properly, when the device is properly connected to power input terminals and in a tripped state. The test circuit contains an end-of-service-life integrated circuit chip, which is connected to a switch that interacts with the reset button, thereby, by observing whether the device is capable of resetting, a user can determine whether the service life of the device has ended, i.e., if the device can be reset, the device is working properly; if the device cannot be reset, the service life of the device has ended. Optionally, the circuit interrupting device contains an indicating light on the face of the device, thereby, by observing whether ...

SELF-TEST GFCI DEVICE WITH DUAL SOLENOID COIL ELECTRONIC CONTROL

A circuit interrupting device having a dual-coil solenoid for delivering an increased magnetic field to the solenoid plunger when a fault is detected and it is desired to place the device into a tripped condition. Independent switching devices control the flow of current through the respective coils of the solenoid and a third switching device controls the operation of the two coil driving switch devices. A detection circuit detects faults and controls the third switching device to activate the coil driving switching devices when a fault is detected. A programmable device runs a self-test program to determine whether the device is operating properly and faults can be detected. The programmable device can also independently control the operation of the two coil driving switching devices.

ULTRA-LOW SENSITIVITY GROUND FAULT CIRCUIT INTERRUPTER

An ultra-low sensitivity ground fault circuit interrupter (GFCI) device and a method for manufacturing the device is disclosed. The GFCI device detects an unbalanced current between line and return conductors that results from an unintended path to ground. The GFCI device disconnects the current source when a leakage current is detected. The GFCI device includes a current transformer that has its core wrapped with the line and return conductors. The line and return conductors are secured around the core in a fixed position. During manufacture of the GFCI device an amplifier of the GFCI can be adjusted so that the GFCI device disconnects the current source when a leakage current exceeds a desired level.

ULTRA-LOW SENSITIVITY GROUND FAULT CIRCUIT INTERRUPTER

An ultra-low sensitivity ground fault circuit interrupter (GFCI) device and a method for manufacturing the device is disclosed. The GFCI device detects an unbalanced current between line and return conductors that results from an unintended path to ground. The GFCI device disconnects the current source when a leakage current is detected. The GFCI device includes a current transformer that has its core wrapped with the line and return conductors. The line and return conductors are secured around the core in a fixed position. During manufacture of the GFCI device an amplifier of the GFCI can be adjusted so that the GFCI device disconnects the current source when a leakage current exceeds a desired level.

TESTING APPARATUS FOR SAFETY SWITCHES AND METHOD

An interface apparatus is disclosed for interfacing a testing device to a plurality of safety switches at a switch location, wherein each safety switch is connected to an electrical load circuit including at least an active line and a neutral return line. The interface apparatus comprises a plurality of actuating devices each being connectable to a respective safety switch, and a controller for controlling each actuating device to selectively connect the associated safety switch to the testing device. Each safety switch may include an RCD or RCCB device. A method of interfacing a testing device to a plurality of safety switches is also disclosed.

Automatic Miniature Circuit Breaker with Z-Axis Assemblable Trip Mechanism

MULTIPOLE CIRCUIT BREAKER WITH MODULAR ASSEMBLY

Each breaking module (14) is formed by a parallelepipedic monoblock cartridge (26) made of plastic material, housed in the corresponding compartment (96), (98), (100) of the base plate (88), said cartridge housing at least a stationary contact (34), (36), an arc extinguishing chamber (84), and a pair of connecting strips (38), (42) for connection to a terminal (40) and to the trip module (46) of the same pole. A mechanical actuation module (122) constituted by the switching bar (82) and mechanism (60) assembly, is securedly united to the cover (90). The rotary trip bar (52) is supported by clipping means (138), (140) arranged on the bottom face of the cover (90). A plurality of recesses (114), (116) and cutouts (138), (140) are arranged in the spacers (94), (95) of the base plate (88) to act as first bearing surfaces respectively for the switching bar (82) and trap bar (52) when the first sub-assembly A composed of the base plat a (88) with the set of breaking modules (14) and trip modules ...

MANUALLY SET GROUND FAULT CIRCUIT INTERRUPTER

MANUALLY SET GROUND FAULT CIRCUIT INTERRUPTER An improved ground fault circuit interrupter (GFCI) device requires manual setting following initial connection to an AC power source or termination of a power source interruption. The improved GFCI device utilizes a controlled switching device which is responsive to a load power signal for allowing the relay contact sets of the GFCI device to be closed only when power is being made available at the output or load terminals. The controlled switching device preferably comprises an opto-isolator or other type of switching device which provides isolation between the GFCI input and output terminals when the relay contact sets are open. The improved GFCI device may be incorporated into portable units, such as plug-in or line cord units, for use with unprotected AC receptacles.

SELF TESTING CIRCUIT BREAKER GROUND FAULT AND SPUTTERING ARCTRIP UNIT

Ground fault trip units for circuit breakers are tested by a passive te st circuit which includes a test conductor passing through the current transformer sensing coil(s), and a test switch which selectively connects the test conductor in a loop which simulates a neutral-to-ground fault. In a dormant oscillator grou nd fault test circuit, the test conductor loop passes through both sensing coils. Whe n the neutral-to-ground detector is combined with a sputtering arc fault detector sharing a common sensing coil, testing of all the components is accomplished by addi ng an additional test circuit which injects pulses derived from the line conductor into the sensing coil secondary, or which alternatively, connects a capacitor charged from a DC supply across the sensing coil secondary. Either of these alternative test circuits generates the successive events needed to produce a sputtering arc trip.

MOLDED CASE CIRCUIT BREAKER CURRENT TRANSFORMER ASSEMBLY

INTELLIGENT GROUND FAULT CIRCUIT INTERRUPTER

An intelligent circuit interrupt system is electrically connected between an AC source and a load for interrupting a flow of AC from the source to the lo ad upon detection of an interrupt condition. A circuit interrupter electrically connected to phase and neutral terminals of the AC source defines the interrupt condition. A relay switch with a relay coil and phase and neutral contacts is included such that line and load ends of the phase contact are electrically connected, respectively, between the interrupt means load side phase port and a phase terminal of the load. Line and load ends of the neutral contact are electrically connected, respectively, between the interrupt neutral port and a neutral terminal of the load. The relay coil is electrically coupled between load sides of said phase and neutral contacts for controlling the contacts in response to the interrupt signal. An open-contact miswiring detector (OCMD) is electrically connected to one of the phase and neutral contacts for ...

SWITCH MECHANISM WITH TWO FULCRUMS

A switch mechanism opens a contact set in the event of an undervoltage condition. The mechanism involves a lever assembly biased by a spring for pivoting about one or other of two fulcrums to open or close the contacts respectively. The undervoltage causes a solenoid to release a plunger which initiates operation about a fixed fulcrum. A reset device is used manually to initiate operation about a movable fulcrum, provided that the voltage is sufficient. An arm is deflected by the plunger to shift the movable fulcrum and also acts to restore the plunger daring reset. The switch mechanism may be incorporated in a residual current device which provides the undervoltage condition on detecting an electrical fault.

PLUG-IN CIRCUIT BREAKER

A plug-in ground fault interrupting type circuit breaker includes a resilient jaw (42) for engaging the neutral bar in a loadcenter. The jaw is formed at the end of a conductive strap (70) which passes through the window of a transformer (78) and terminates in a screw terminal (28) for attachment to a neutral load conductor (29). The phase conductive path also includes a conductive strap(80)that is coupled at one end to a phase load conductor terminal and at its other end to the breaker trip mechanism(24') The transformer and both strap conductors are mounted to a printed circuit board that is included within the breaker housing. The invention eliminates the separate pigtail for connecting the load neutral conductor to the loadcenter neutral bar.

ARC FAULT DETECTOR WITH IMMUNITY TO TUNGSTEN BULB BURNOUT AND CIRCUIT BREAKER INCORPORATING SAME

A circuit breaker with an arc fault circuit provides immunity to false trips caused by tungsten bulb burnout and by a cold tungsten filament energized through a solid state dimmer. The detector circuit includes a pulse generato r which generates pulses in response to the step increases in current occurring each time an arc is struck. A zener diode limits the amplitude of pulses generated by the pul se generator to a value which is below that of pulses generated by the tungsten lamp. When a time attenuated accumulation of these pulses reaches a predetermined value, the circuit breaker is tripped. By clipping the pulses with the zener diode, the few large pulses generated by tungsten bulb burnout or energization of a cold tungsten bulb by a solid state dimmer switch are insufficient to allow the time attenuated accumulation of pulses to reach the trip value.

WEATHERTIGHT GROUND FAULT INTERRUPTER/CONTAINER COMBINATION

A Ground Fault Interrupter ("GFI") combined with a plug-receiving receptacle is mounted on a plastic bucket. The bucket is additionally configured with a weathertight opening through which a three prong male end of a pigtail electrically connected to the GFI/receptacle unit may pass. A resealable lid provides a weathertight covering for the bucket so that the combination is functional during field use or for final storage for user transport of tools and other electrical apparatus The device is optionally configured with a removable, storable, pedestal pole-mounted light assembly. A pedestal light support flange is attached to the interior base of the bucket,and container-sized pole sections substantially the same height of the container are available for assembling the light pole when needed by a user. The light is powered by the GFI/receptacle unit carried by the bucket.

APPARATUS FOR DETECTING ARCING FAULTS AND GROUND FAULTS IN MULTIWIRE BRANCH ELECTRIC POWER CIRCUITS

A multiwire branch circuit including two line conductors and a grounded, common neutral conductor is protected by a two pole circuit breaker connected to independently interrupt overcurrent conditions in the two ungrounded line conductors. Three separate protection circuits provide arc fault protection for each of the ungrounded line conductors and ground fault protection for all three conductors. The arc fault detectors us e the bimetal of the thermal-magnetic trip device for the associated line conductor for current detection, and therefore, are individually referenced to the associated line voltage. Hence, the outputs of the arc fault detector s are electrically isolated from each other and from the output of the ground fault detector, but operate a common trip circuit to simultaneously open both poles of the two pole circuit breaker. The arc fault detectors have separate isolated power supplies. The ground fault detector is powered by a supply which is energized if either of the ungrounded ...

CIRCUIT BREAKER

A circuit breaker (10) for use in a power/load circuit formed by a three-phase AC power supply (11) and a load (12) connected to the power supply (11) by means of three live power lines (R-R', S-S' \A T-T'). The circuit breaker (10) comprises a tripping circuit (60) including switches (SW1) connected in series with the respective power lines facing the power supply (11), a transformer (T1) having at least three balanced primary windings (P1 to P3) connected subsequently in series along the respective power lines and a secondary winding (S1), and a voltage comparator (50) connected to the secondary winding (S1) for comparing a voltage induced in the transformer (T1) with a reference voltage and then in the event of a leakage fault providing a tripping signal for the tripping circuit (60) to open the switches (SW1). A circuit path (X) is provided, which has a combined voltage sensor/comparator (30) and extends across opposite sides and externally of the transformer (T1) for sensing and comparing ...

Selbstschalter, insbesondere auf Fehlerstrom ansprechender Schutzschalter, mit Freiauslösung.

Schutzschalter mit polarisiertem Relais.

Dispositif électromécanique de protection, détecteur de masse et connecteur de terre

Arbeitsstrom-Auslöser, insbesondere für Fehlerstromschutzschalter

Fehlerstrom-Schutzschalter

Disjoncteur à surintensité

Interruttore-sezionatore di sicurezza, per circuiti elettrici

Disjoncteur combiné à surintensité et différentiel

Disjoncteur à surintensité et à action différentielle

Magnetisches Kipprelais in einer elektrischen Schalt-, Steuer- oder Überwachungseinrichtung

Residual current device

In order to reduce the assembly cost and hence the production costs, the latching mechanism (7) is constructed in an L-shape. One of the two limbs engages in the housing trough (1) and is firmly held in the latter by friction by means of spring claws (20). The summing current transformer (2) is held in a recess in the housing trough (1), in a positively-locking manner, by the other limb. The position of the latching mechanism (7) is also secured once the housing cover (10) has been screwed on. The plane of symmetry of the latching mechanism (7) and the axis of symmetry of the summing current transformer (2) lie in the plane of symmetry of the housing trough (1). ...

Earth leakage circuit-breaker

Terminal arrangement for fault protection switch - has input current terminals and neutral terminals in separate planes w.r.t. front face

The arrangement of connection terminals lying on the feed-in side of a fault circuit breaker (10) has the terminals (22,24) individually or groupwise in different planes running parallel to the face wall (16) of the housing. The terminals pref. lie in two planes parallel to the face wall. The current carrying terminals are then in the one plane and the neutral terminal in the other. The neutral terminal is pref. the nearest to the face wall. The separation of the planes may be between 5 and 15 millimetres. USE/ADVANTAGE - Earth leakage circuit breakers. Cost effective wiring is enabled, with space saving for multipolar systems.

Leakage circuit breaker

Opposition wiring protector device for earth-fault circuit breaker

MAGNETIC TRIP DEVICE WITH KNIFE-BLADE ARTICULATION

SIGNAL DEVICE Of an ELECTRIC DEFECT IN a SHUTTING-OFF DEVICE a SUCH DIFFERENTIAL SWITCH

La présente invention concerne un dispositif de signalisation d'un défaut électrique, tel un défaut d'isolement, dans un interrupteur différentiel. Ce dispositif est destiné à être utilisé dans un appareil de coupure comprenant une paire de contacts séparables par pôle, un mécanisme de commande des contacts, un déclencheur comprenant un moyen de détection d'un défaut électrique et un électro-aimant (11) apte à provoquer l'ouverture des contacts lors d'un déclenchement automatique suite à un défaut, et un moyen M de signalisation de l'état déclenché de l'appareil. Ce dispositif de signalisation comprend un indicateur (5) entraîné par l'électroaimant (11) entre une première et une seconde position correspondant respectivement à un état de fonctionnement normal et à un état déclenché de l'appareil, et un moyen (3) pour retenir l'indicateur (5) dans la seconde position, de manière à mémoriser l'information de déclenchement jusqu'à une manoeuvre de fermeture de l'appareil.

CIRCUIT BREAKER HELD ELECTRODYNAMIC AND RAISED BREAKING CAPACITY

PERFECTIONNEMENTS AUX DISJONCTEURS SENSIBLES AUX COURANTS DE FUITES

Disjoncteur pour couper automatiquement l'un au moins des deux fils 4 et 5 d'alimentation d'un appareil électrique dès apparition d'un courant de fuite dangereux. Un transformateur différentiel 11, suivi d'un redresseur 20, élabore une tension continue U fonction de ce courant de fuite, laquelle est appliquée entre l'électrode fixe 16 et l'électrode mobile 17 d'un condensateur contenant un électret 18. Le champ créé par cette tension U s'oppose à celui créé par l'électret et reduit la force d'attraction correspondante exercée, sur l'électrode 17, laquelle bascule dès que H devient inférieure à l'attraction antagoniste G d'un aimant, ce qui ouvre un interrupteur 22. Protection des usagers d'appareils électriques dans les salles d'eau, cuisines...

Electric device of order

CIRCUIT BREAKER OF LEAKAGE CURRENT TO THE GROUND

CIRCUIT BREAKER WITH OVERCURRENT AND AUXILIARY RELEASES

CIRCUIT BREAKER HELD ELECTRODYNAMIC AND RAISED BREAKING CAPACITY

Le ou les pôles du disjoncteur comportent un organe de contact mobile 28 avec une cage de support 26 mobile par rapport au châssis 12 entre une position d'ouverture et une position de fermeture et un ou plusieurs doigts de contact 41 mobiles par rapport à la cage de support 26 entre une position de contact et une position de retrait. Des moyens de compensation électromagnétique 88 sont aptes à appliquer sur le ou les doigts de contact des forces électromagnétiques tendant à maintenir le ou les doigts en contact avec l'organe de contact fixe. Des moyens de limitation électromagnétique 90 sont aptes à appliquer sur le ou les doigts de contact 41 des forces électromagnétiques tendant à entraîner le ou les doigts vers leur position de retrait. Les moyens de compensation électromagnétique 88 et les moyens de limitation électromagnétique 90 sont tels que lorsque l'intensité du courant traversant l'organe de contact mobile 28 est en deçà d'un seuil dit de limitation, le ou les doigts sont maintenus ...

CIRCUIT BREAKER GAVE AT REST SEQUENTIAL

Ground fault circuit breaker for protecting low voltage distribution network, has ground fault detection circuit, current sensitivity and action time switches and fault testing switch mounted on circuit board and installed in enclosure

Disjoncteur comprenant un transformateur de courant à phase nulle (3), un circuit de détection de fuite à la terre (4), une bobine de déclenchement (6), un commutateur de sensibilité en courant (7), un commutateur de temps d'action (8), et un commutateur de test de fuite à la terre (9). Le circuit (4) le commutateur (7), le commutateur (8) et le commutateur (9) sont montés sur une carte de circuits (20).

EARTH LEAKAGE CIRCUIT BREAKER

Leakage current protection switch - is combined with line protection switch and both switches have locking mechanisms tripped by leakage current through relay

Thermally protected resettable GFCI

An improved GFCI monitors the balance of current passing through the device, and as long as the difference between current coming in and going out stays within a given range, normally 5 ma, the device remains in the active setting. If sensed current does not remain in balance, or within the given range, a voltage source is generated, signaling the comparator/controller to trip a solenoid. A solenoid trip results in disconnection of both line and neutral on the face contacts, with power being shut off to the load, and with the load terminals disconnecting all receptacles downstream. A mechanical or electronic switch, being located across the SCR, is activated by a thermal sensor detecting abnormal temperatures, which may also trigger the solenoid, in addition to it being triggered when leakage is detected. The sensors can be placed directly on to the surfaces to be monitored for maximum heat transfer.

Leakage detection breaker

A leakage detection breaker includes a current transformer configured to detect a leakage current, and a leakage determination unit configured to determine DC and AC leakages based on an output signal from the current transformer. The leakage detection breaker further includes a power supply cut-off unit configured to cut off a supply of DC or AC power when the current leakage determination unit determines the occurrence of the DC or AC leakage.

Self-Testing Features of Sensing and Control Electronics for a Power Grid Protection System

Systems and method for detecting potentially harmful harmonic and direct current signals at a transformer are disclosed. One system includes a protection circuit electrically connected to a transformer neutral, the transformer electrically connected to a power grid, the protection circuit including a DC blocking component positioned between the transformer neutral and ground and one or more switches selectively actuated to form a path between the transformer neutral and ground in the event of unwanted DC current at the transformer neutral. The system also includes a control circuit electrically connected to the protection circuit and positioned to selectively actuate the switches based on observed conditions within the protection circuit. The system further includes a plurality of test connections disposed within the protection circuit and useable to test electrical properties of the protection circuit.

DEVICE AND METHOD FOR PROTECTING AGAINST LEAKAGE CURRENTS

Device for protecting against leakage currents, the device being intended to be wired up between a first electrical connection () and a second electrical connection (). 1235. Device for protecting against leakage currents , the device being intended to be connected between a first electrical connection () and a second electrical connection () , characterized in that the device comprises a switch () configured so as to at least partially divert the current flowing in the first electrical connection and controlled by the voltage of the first electrical connection.25. Device according to claim 1 , in which the switch () is configured so as to be closed when the voltage of the first electrical connection exceeds a threshold value.356. Device according to or claim 1 , in which the switch () is a MOSFET transistor claim 1 , the gate of the transistor being connected to the first electrical connection by means of a resistor () claim 1 , and the drain of the transistor is connected to the first connection.49. Device according to any one of the preceding claims claim 1 , comprising a circuit () for limiting the current flowing in the switch.591011. Device according to or claim 1 , in which the circuit for limiting the current () comprises a bipolar transistor () and a limiting resistor () claim 1 , the collector of the bipolar transistor being connected to the gate of the MOSFET transistor and the base of the bipolar transistor being common to the limiting resistor and to the source of the MOSFET transistor.656. Device according to any one of the preceding claims claim 1 , in which the switch () is configured so as to be closed and to at least partially divert the current flowing in the first electrical connection in a first mode of control of the device and to be open in a second mode of control of the device claim 1 , the device furthermore comprising a resistor () forming an input impedance of the device in the second mode of control.713. Device according to claim 6 , ...

SUPPLY SYSTEM FOR AN AIRCRAFT, USE OF A SHIELDED SUPPLY LINE IN AN AIRCRAFT AND AN AIRCRAFT WITH A SUPPLY SYSTEM

A supply system for supplying energy in an aircraft includes at least one electrical line including at least one core connectable to a pole of a current source, an electrically conductive shield, and a detection unit having at least two electrical inputs. The shield surrounds the at least one core under a distance and creates an intermediate space between the at least one core and the shield. At least one port of the detection unit is connected to the at least one core. At least another port of the detection unit is connected to at least one of the shield and the at least one core. The detection unit is adapted for detecting a differential current over the at least one core or an absolute current between the shield and a ground potential for generating a warning signal if a predetermined threshold value for the detected current value is exceeded. 1. A supply system for supplying energy in an aircraft , comprising:at least one electrical line connectable to a current source,an electrically conductive shield, anda detection unit having at least first and second electrical inputs,wherein the at least one electrical line comprises at least one core connectable to a pole of the current source,wherein the shield surrounds the at least one core under a distance and creates an intermediate space between the at least one core and the shield,wherein at least one port of the detection unit is connected to the at least one core,wherein said detection unit is adapted for detecting a differential current over the at least one core or an absolute current between two of the shield, the at least one core and a ground potential; andwherein said detection unit is adapted for generating a warning signal if a predetermined threshold value for the detected current value is exceeded.2. The supply system according to claim 1 , wherein the detection unit is coupled with at least one switch in the at least one core for interrupting the current transferred by the at least one core if the ...

GROUND FAULT CIRCUIT INTERRUPTER (GFCI) SYSTEM AND METHOD

A wiring device including one or more line contact arms electrically connected to a line terminal. Each line contact arm has an upper line contact located on a bent portion of the line contact arm, and a lower line contact located on a substantially straight portion of the line contact arm. The wiring device further includes one or more load contact arms electrically connected to a load terminal. Each load contact arm has a load contact located on a bent portion of the load contact arm. 1. A wiring device comprising: an upper line contact located on a bent portion of the line contact arm, and', 'a lower line contact located on a substantially straight portion of the line contact arm; and, 'one or more line contact arms electrically connected to a line terminal, each line contact arm having'}one or more load contact arms electrically connected to a load terminal, each load contact arm having a load contact located on a bent portion of the load contact arm.2. The wiring device of claim 1 , wherein claim 1 , a face contact and the upper line contact are electrically connected claim 1 , and the lower line contact and the load contact are electrically connected claim 1 , when the wiring device in is a closed position claim 1 , and the face contact and the upper line contact are electrically disconnected claim 1 , and the lower line contact and the load contact are electrically disconnected when the wiring device is in an open position.3. The wiring device of claim 1 , wherein the face contact and the upper line contact are in a substantially flat connection when the wiring device is in the closed position.4. The wiring device of claim 1 , wherein the lower line contact and the load contact are in a substantially flat connection when the wiring device is in the closed position.5. The wiring device of claim 1 , wherein the bent portion of the line contact arm is bent at an angle of approximately three degrees to approximately six degrees relative to the substantially ...

Earth leakage circuit breaker

The earth leakage circuit breaker of the present disclosure includes a leakage current detection unit outputting a leakage current detection signal; a conversion unit outputting the leakage current magnitude of a fundamental wave component, a ratio of a third harmonic component, and a ratio of a positive pole peak current value to a negative pole peak current value; and a control unit comparing the leakage current magnitude of a fundamental wave component, the ratio of a third harmonic component, and the ratio of a positive pole peak current value to a negative pole peak current value with predetermined reference values to determine whether a leakage current of the alternating current component is generated or a leakage current of the direct current component is generated and to thereby output a trip control signal when it is determined that the leakage current of the direct current or alternating current component is generated.

Ground Fault Circuit Interrupter (GFCI) Latching Apparatus

A GFCI latching apparatus and circuit is provided. The latching apparatus includes a solenoid; a solenoid plunger, wherein the solenoid plunger comprises a groove; a conical spring disposed at one end of the solenoid plunger; a forked latch, wherein the forked latch engages the groove with its forks. The latch also includes a bevel surface. Also included is a contact carrier having a first position when the solenoid is energized and a second position when the solenoid is deenergized. The contact carrier includes a bevel surface for mating with the latch bevel surface when the solenoid is energized. Also included is a GFCI configured to deenergize the solenoid upon the occurrence of a fault to disengage the latch, the latch thereby disengaging from the contact carrier, causing the contact carrier to move from the first position to the second position. The GFCI circuit detects ground faults and deenergizes the solenoid when a ground fault is detected. The GFCI includes GFCI detection circuitry, wherein the GFCI detection circuitry includes an SCR switch for controlling energizing current for the solenoid; SCR Test Bias circuit for biasing the SCR switch; Self-Test Fault circuit for testing the operation of the GFCI detection circuitry; an Isolation circuit for isolating GFCI detection circuit while self-test is preformed; and power supply circuits for powering the GFCI circuit. 12-. (canceled)3. A Ground Fault Circuit Interrupter (GFCI) latching apparatus , the apparatus comprising:a solenoid;a solenoid plunger, wherein the solenoid plunger comprises a groove;a latch, wherein the latch engages the groove;a pair of moveable contact arms;a pair of contacts corresponding to the pair of moveable contact arms;a lifter;a latch in which the latch engages the lifter and the solenoid plunger groove;wherein the lifter is configured to move between a first position which provides electrical continuity between the pair of moveable contact arms when the solenoid is energized and ...

FAULT PROTECTION DEVICES AND METHODS FOR POWER SYSTEMS

A power system includes a direct current (DC) channel connected to a high-voltage direct current (HVDC) bus, an HVDC bus ground fault protection device connected to the HVDC bus, and a DC channel ground fault protection device connected to the DC channel. The HVDC bus ground fault protection device is operatively associated with the DC channel ground protection fault device through the DC channel to cause the DC channel ground fault protection device to disconnect the DC channel from the HVDC bus based on a comparison of current imbalance in the DC channel with a DC channel current imbalance threshold when the HVDC bus ground fault protection device determines that current leakage from the HVDC bus exceeds a current leakage threshold of the HVDC bus. 1. A power system , comprising:a DC channel connected to a high-voltage direct current (HVDC) bus;an HVDC bus ground fault protection device connected to the HVDC bus; anda DC channel ground fault protection device connected to the DC channel,wherein the HVDC bus ground fault protection device is operatively connected with the DC channel ground protection fault device through the DC channel and is configured to cause the DC channel ground fault protection device to disconnect the DC channel from the HVDC bus based on current leakage from the HVDC channel and current imbalance in the DC channel.2. A power system as recited in claim 1 , wherein the HVDC bus ground fault protection device includes a current leakage module optically coupled to an AC signal injection module.3. A power system as recited in claim 2 , wherein the AC signal injection module includes an isolation transformer connected in series with a DC current-blocking capacitor claim 2 , the DC current-blocking capacitor being connected between positive and return leads of the HVDC bus.4. A power system as recited in claim 2 , wherein the current leakage module includes a wheatstone bridge connected between positive and return leads of the HVDC bus.5. A power ...

ELECTRICAL WIRING DEVICE

A circuit interrupting device includes an input conductor for electrically connecting to an external power supply, a load conductor for electrically connecting to a downstream load, a face conductor for electrically connecting to an external load, and a brush conductor in electrical communication with the input conductor and movable between a closed position and an open position. The brush conductor includes a second portion offset from a first portion such that a first terminal and a second terminal are positioned on separate planes. When the brush conductor is in the closed position, the first terminal contacts the load terminal and the second terminal contacts the face terminal to provide electrical communication between the input conductor, the load conductor, and the face conductor. When the brush conductor is in the open position, the first terminal is spaced apart from the load terminal and the second terminal is spaced apart from the face terminal. 1. A circuit interrupting device comprising:an input conductor for electrically connecting to an external power supply;a load conductor for electrically connecting to a downstream load, the load conductor including a load terminal;a face conductor for electrically connecting to an external load, the face conductor including a face terminal; anda brush conductor in electrical communication with the input conductor and movable between a closed position and an open position, the brush conductor including a first terminal and a second terminal, the first terminal and the second terminal positioned on separate planes,wherein, when the brush conductor is in the closed position, the first terminal contacts the load terminal and the second terminal contacts the face terminal to provide electrical communication between the input conductor, the load conductor, and the face conductor,wherein, when the brush conductor is in the open position, the first terminal is spaced apart from the load terminal and the second terminal is ...

ELECTRICAL APPARATUS AND METHOD FOR DETERMINING EARTH STATE OF ELECTRICAL APPARATUS

A method capable of effectively detecting an earth state and an electrical apparatus using the same are provided. The electrical apparatus includes a first detection unit for detecting whether there is power between a power supply line L and an earth line G and outputting a first detection signal, a second detection unit for detecting whether there is power between a neutral line N and the earth line G and outputting a second detection signal, and an earth state determining unit for determining an earth state according to the first detection signal and the second detection signal and determining whether a power supply is connected in a normal phase or a reversed phase. 1. An electrical apparatus using AC power generated between a power supply line L of a commercial power supply and a neutral line N of a commercial power supply , comprising:a first detection unit for detecting whether there is power between the power supply line L of the commercial power supply and an earth line G of the commercial power supply, and outputting a first detection signal;a second detection unit for detecting whether there is power between the neutral line N of the commercial power supply and the earth line G of the commercial power supply, and outputting a second detection signal; andan earth state determining unit for determining an earth state according to the first detection signal and the second detection signal,the earth state determining unit determining that:when the first detection signal indicates that there is power between the power supply line L and the earth line G and the second detection signal indicates that there is no power between the neutral line N and the earth line G, the commercial power supply is connected to the electrical apparatus in a normal phase, and the earth line G is earthed;when the first detection signal indicates that there is no power between the power supply line L and the earth line G and the second detection signal indicates that there is power ...

Reverse grounding protection circuit and ground fault circuit interrupter

The present disclosure relates to a reverse grounding protection circuit and a ground fault circuit interrupter. The reverse grounding protection circuit may include a power supply circuit, a leakage signal amplifying circuit, a leakage grounding detection circuit, a power supply indicator circuit, a manual detection circuit, a tripping mechanism control circuit, a reverse connection detection and execution circuit, and a power-on driving signal generating circuit. A ground fault circuit interrupter may comprise an interrupter body and a reverse grounding protection circuit in the interrupter body. The practice of the present disclosure may avoid the risk from reverse connection of the ground fault circuit interrupter and output of power of reverse connection, and thus improve safety of the ground fault circuit interrupter.

Leakage current detecting circuit-breaker with a flexible shield cord

The present invention discloses a leakage current detecting circuit-breaker with a flexible shield cord, which comprises a detection circuit, a trigger circuit and a tripping mechanism. The detection circuit comprises a flexible shield cord, a zero sequence current transformer and diodes connected in series. The flexible shield cord comprises a foil wrapped around outer insulating layers of a live line and a neutral line and a tinned copper wire between the outer insulating layers and the foil. The flexible shield cord senses an abnormal or fault signal of a power line, and the zero sequence current transformer amplifies the abnormal or fault signal to such an extent as to trigger the trigger circuit. The diodes comprise a fifth diode and a sixth diode; anodes of the fifth diode and the sixth diode are connected to each other, and cathodes of the fifth diode and the sixth diode are respectively connected to the live line and the neutral line. The leakage current detecting circuit-breaker is of low production cost and strong anti-interference capacity.

INTEGRATED POWER-GROUND REVERSE WIRING PROTECTION CIRCUIT

A two-wire current loop system includes a current loop with a transmitter and a host. The system also includes a monolithic integrated circuit included with the transmitter. The monolithic integrated circuit includes: 1) a power supply terminal coupled to the current loop; 2) a loop ground terminal coupled to the current loop and configured to output a current to the current loop; 3) device circuitry with a power supply node and an internal ground node, wherein the power supply node is coupled to the power supply terminal; and 4) a reverse wiring protection circuit coupled between the internal ground node of the device circuitry and the loop ground terminal. 1. A two-wire current loop system , comprising:a current loop with a transmitter and a host; and a power supply terminal coupled to the current loop;', 'a loop ground terminal coupled to the current loop and configured to output a current to the current loop;', 'device circuitry with a power supply node and an internal ground node, where the power supply node of the device circuitry is coupled to the power supply terminal; and', 'a reverse wiring protection circuit coupled between the internal ground node of the device circuitry and the loop ground terminal., 'a monolithic integrated circuit included with the transmitter, wherein the monolithic integrated circuit comprises2. The two-wire current loop system of claim 1 , wherein the reverse wiring protection circuit comprises a PNP device.3. The two-wire current loop system of claim 2 , wherein the PNP device comprises:a p-type back gate;an n-type buried layer over the p-type back gate;a p-type buried layer over the n-type buried layer;a n-type drift region in the p-type buried layer;a first p-type channel in the n-type drift region;a n-type channel in the n-type drift region;a second p-type channel in the p-type buried layer and spaced from the n-type drift region; anddeep trenches extending from the p-type back gate to a contact surface of the PNP device.4. The ...

Method for determining a circuit element parameter

A method for determining a circuit element parameter in a ground fault circuit interrupter circuit. An electrical signal provided to a first node is used to generate another electrical signal at a second node. The electrical signal at the second node is multiplexed with a modulation signal to generate a modulated signal that is then filtered and converted into a digital representation of a portion of the circuit element parameter. The electrical signal at the second node is multiplexed with the modulation signal after it has been phase shifted to produce a modulated signal that is filter and converted into a digital representation of another portion of the circuit element parameter. In another aspect, a slope based solenoid self-test method is used for self-testing in a GFCI circuit. Alternatively, a method for determining a wiring fault is provided using a digital filter.

ANNUNCIATING OR POWER VENDING CIRCUIT BREAKER FOR AN ELECTRIC LOAD

A circuit breaker for an electric load includes first and second terminals; a number of first separable contacts each electrically connected between one of the first terminals and one of the second terminals; a first mechanism to open, close or trip open the first contacts; a number of second separable contacts each electrically connected in series with a corresponding one of the first contacts; a second mechanism to open or close the second contacts; a processor to cause the second mechanism to open or close the second contacts, annunciate through one of the second terminals a power circuit electrical parameter for the electric load, receive from a number of the second terminals a confirmation from or on behalf of the electric load to cause the second mechanism to close the second contacts, and determine a fault state operatively associated with current flowing through the second contacts. 1. A circuit breaker for an electric load , said circuit breaker comprising:a plurality of first terminals;a plurality of second terminals;a number of first separable contacts each of which is electrically connected between one of said first terminals and one of said second terminals;a first mechanism structured to open, close or trip open said number of first separable contacts;a number of second separable contacts each of which is electrically connected in series with a corresponding one of said number of first separable contacts and electrically connected between one of said first terminals and one of said second terminals;a second mechanism structured to open or close said number of second separable contacts;a processor structured to cause said second mechanism to open or close said number of second separable contacts, annunciate through one of said second terminals a power circuit electrical parameter for said electric load, receive from a number of said second terminals a confirmation from or on behalf of said electric load to cause said second mechanism to close said ...

APPARATUS AND METHODS FOR MONITORING AND RESPONDING TO POWER SUPPLY AND/OR DETECTION CIRCUIT FAILURES WITHIN AN ELECTRONIC CIRCUIT BREAKER

An electronic circuit breaker may include a monitoring circuit configured to monitor and respond to a power supply and/or detection circuit failure within the electronic circuit breaker. In some embodiments, the monitoring circuit may monitor a DC current received from a detection circuit within the electronic circuit breaker. A response to a power supply and/or detection circuit failure may include interrupting current flow between an electrical power source and an electrical circuit protected by the electronic circuit breaker. Methods of monitoring and responding to a power supply and/or detection circuit failure within an electronic circuit breaker are also provided, as are other aspects. 1. An electronic circuit breaker , comprising:a trip switch configured to open and close a current path between an electrical power source and an electrical circuit;a detection circuit configured to detect and respond to a fault condition in the electrical circuit, the detection circuit configured to respond to a fault condition by causing the trip switch to open the current path between the electrical power source and the electrical circuit;a power supply configured to convert an AC voltage received from the electrical power source into a first DC voltage, the power supply providing the first DC voltage to the detection circuit; anda monitoring circuit coupled to receive and monitor a first current draw from the first DC voltage by the detection circuit, or a second current draw from a second DC voltage from the detection circuit, wherein the monitoring circuit is configured to respond to power supply or detection circuit failure within the electronic circuit breaker by causing the trip switch to open the current path between the electrical power source and the electrical circuit, and wherein a predetermined current draw level from the first DC voltage by the detection circuit, or from a second current draw of the second DC voltage indicates no failure of the power supply or ...

APPARATUS AND METHODS FOR MONITORING AND RESPONDING TO POWER SUPPLY AND/OR DETECTION CIRCUIT FAILURES WITHIN AN ELECTRONIC CIRCUIT BREAKER

An electronic circuit breaker may include a monitoring circuit configured to monitor and respond to a power supply and/or detection circuit failure within the electronic circuit breaker. In some embodiments, the monitoring circuit may monitor a regulated DC voltage provided by the detection circuit within the electronic circuit breaker. A response to a power supply and/or detection circuit failure may include interrupting current flow between an electrical power source and an electrical circuit protected by the electronic circuit breaker. Methods of monitoring and responding to a power supply and/or detection circuit failure within an electronic circuit breaker are also provided, as are other aspects. 1. An electronic circuit breaker , comprising:a trip switch configured to open and close a current path between an electrical power source and an electrical circuit;a detection circuit configured to detect and respond to a fault condition in the electrical circuit, the detection circuit configured to respond to a fault condition by causing the trip switch to open the current path between the electrical power source and the electrical circuit;a power supply configured to convert an AC voltage received from the electrical power source into a first DC voltage, the power supply providing the first DC voltage to the detection circuit; anda monitoring circuit configured to monitor and respond to a power supply or detection circuit failure within the electronic circuit breaker, wherein the monitoring circuit is configured to respond to the power supply or detection circuit failure by causing the trip switch to open the current path between the electrical power source and the electrical circuit.2. The electronic circuit breaker of claim 1 , wherein the monitoring circuit is configured to monitor the first DC voltage or a second DC voltage derived from the first DC voltage within the electronic circuit breaker.3. The electronic circuit breaker of claim 1 , wherein the ...

GROUND FAULT CIRCUIT INTERRUPTER

A ground fault circuit interrupter includes a reset key, a reset mechanism, a conductive assembly configured to connect a power supply input side to a load side, a leakage signal detection circuit, and an electromagnetic tripping mechanism. The reset mechanism comprises a reset support and a support return mechanism. The reset support comprises a reset bracket and a support reset spring. The support return mechanism comprises a reset pole, a reset key spring, a compression spring, a reset block, a compression spring container, a reset slider, and a contact conductive part. The contact conductive part is disposed at a lower end of the reset slider and is configured to align with a position of a switch contact on a first PCB board. A state of contact or separation between the contact conductive part and the switch contact is configured to control an on-off state of the conductive assembly. 1. A ground fault circuit interrupter , comprising:a reset key;a reset mechanism;a conductive assembly configured to connect a power supply input side to a load side;a leakage signal detection circuit; andan electromagnetic tripping mechanism configured to be controlled by the leakage signal detection circuit, the reset mechanism comprises a reset support and a support return mechanism;', 'the reset support comprises a reset bracket and a support reset spring disposed in the reset bracket;', 'the support return mechanism comprises a reset pole, a reset key spring, a compression spring, a reset block, a compression spring container, a reset slider, and a contact conductive part;', 'the reset slider is configured to engage with the reset bracket;', 'the reset support has a first position in a reset state and a second position in a tripping state;', 'the support return mechanism is engaged with the reset support such that the reset support is biased to slide from the first position to the second position;', 'the contact conductive part is disposed at a lower end of the reset slider and ...

DIGITAL GROUND-FAULT CIRCUIT INTERRUPTER

A GFCI circuit that includes an electronically controllable main switch that can turn on, and turn off, the delivery of electrical power from the GFCI circuit. The main switch is controlled and monitored by a microcontroller unit using at least digital input and digital output signals, and which includes analog to digital converter. The microcontroller unit may also use the on-off functionality of the main switch in connection with repeatable detection of miswiring of the GFCI circuit. The GFCI circuit can further be adapted to conduct a self-test that can temporarily disable the ability of a trip signal generated by a GFCI integrated circuit in response to a test fault to cause the tripping of the main switch. The microcontroller unit further monitors one or more characteristics of the GFCI circuit, including the main switch and trip signal(s), and can determine whether the GFCI circuit has reached its end-of-life stage. 1. A ground fault circuit interrupter circuit comprising:one or more line side connection terminals configured to be connected to an external power source;one or more load side connection terminals configured to be connected to an external load;a main switch having one or more contacts, the one or more contacts being selectively displaceable between an open position and a closed position to electrically couple/de-couple the said one or more line side connection terminals to/from the one or more load side connection terminals;a self-test circuit adapted to create a test fault in the ground fault circuit interrupter circuit;a controller adapted to output a trip signal in response to the test fault;an internal power supply in electrical communication with the one or more line side connection terminals and at least the controller, the internal power supply being unable to supply electrical power to at least the controller when the external power source is connected to the one or more load side connection terminals rather than connected to the one or ...

APPARATUS, SYSTEM AND METHOD FOR ALARM TRIGGERED ELECTRICAL SUPPLY DISCONNECTION

A system is described herein, including an activation circuit configured to generate a signal indicative of an alarm condition. A residual current device trigger circuit is coupled to the activation circuit and a residual current device. The residual current device trigger circuit is configured to provide a simulated earth leakage current condition to trigger the residual current device on receiving the signal indicative of the alarm condition. 1. A system , comprising:a residual current device (RCD),an activation circuit configured to generate a signal indicative of an alarm condition; andan RCD trigger circuit coupled to the activation circuit and the RCD, configured to provide a simulated earth leakage current condition to trigger the RCD on receiving the signal indicative of the alarm condition.2. The system of claim 1 , wherein the RCD is a Residual Current Circuit Breaker.3. The system of claim 1 , wherein the RCD trigger circuit comprises a first switching device configured to provide a connection for the simulated earth leakage current between live and earth.4. The system of claim 3 , wherein the first switching device is a solid state relay.5. The system of claim 1 , wherein the activation circuit comprises a manually actuated switching device claim 1 , activation of which causes generation of the signal indicative of an alarm condition.6. The system of claim 1 , wherein the activation circuit comprises a communication device configured to receive a signal sent remotely from the user claim 1 , receipt of which causes generation of the signal indicative of an alarm condition.7. The system of claim 1 , comprising a computing device configured to:operate an automated intrusion detection software tool; andtransmit a signal to the activation circuit on detection of an intrusion event,wherein the activation circuit is configured to generate the signal indicative of an alarm condition on receipt of the signal from the computing device.8. The system of claim 1 , ...

Medium voltage heater elements moisture detection circuit

In various embodiments, an electrical heating assembly is disclosed. The electrical heating assembly comprises one or more electrical heating elements. A current leakage sensor is operatively coupled to the one or more heating elements. The current leakage generates a signal indicative of current leakage from the electrical heating elements. The current leakage is proportional to an amount of moisture in contact with the electrical heating elements. A thyristor is coupled to the electrical heating elements. The thyristor is configured to control a power level of the one or more heating elements. A control logic is coupled to the thyristor and the leakage circuit. The control logic is configured to activate the one or more heating elements in a dry-out mode and a control mode. The control logic switches from the dry-out mode to the control mode when the signal indicative of the current leakage is below a predetermined threshold.

ELECTRIC LEAKAGE PROTECTION DEVICE AND FEED CONTROL DEVICE

The electric leakage protection device (feed control device includes an electric leakage detector, an electric leakage protector, and a self leakage generator. The electric leakage detector outputs an electric leakage detection signal when a current leaked from a main circuit exceeds a threshold value. The electric leakage protector opens a contact device interposed in the main circuit when receiving the electric leakage detection signal. The self leakage generator includes; a first short circuit having a first electric resistance component and a first switch component electrically connected in series with each other, and a second short circuit having a second electric resistance component and a second switch component electrically connected in series with each other. The first short circuit and the second short circuit are electrically connected in parallel with each other with regard to a pair of power supply paths constituting the main circuit. 1. An electric leakage protection device , comprising:an electric leakage detector configured to output an electric leakage detection signal, when a current leaked from a main circuit exceeds a threshold value;an electric leakage protector configured to open a contact device interposed in the main circuit, when receiving the electric leakage detection signal; anda self leakage generator including a first short circuit having a first electric resistance component and a first switch component electrically connected in series with each other, and a second short circuit having a second electric resistance component and a second switch component electrically connected in series with each other,the first short circuit and the second short circuit being electrically connected in parallel with each other with regard to a pair of power supply paths constituting the main circuit.2. The electric leakage protection device of claim 1 , whereinthe self leakage generator is connected between the pair of power supply paths.3. The electric ...

DIRECT CURRENT GROUND FAULT INTERRUPTER

A method, system, and computer program product for detecting and interrupting a ground fault in a direct current (DC) power circuit are provided in the illustrative embodiments. A first value of a first current flow over a first part of the DC power circuit is compared with a second value of a second current flow over a second part of the DC power circuit. A voltage is generated, wherein the voltage is proportional to a difference between the first and the second values. Responsive to the voltage exceeding the threshold voltage for a threshold time, a signal output is produced, the signal configured to cause a short-circuit in the first part of the DC power circuit. The first part of the DC power circuit is interrupted responsive to the short-circuit. 1. A method for detecting and interrupting a ground fault in a direct current (DC) power circuit , the method comprising:comparing a first value of a first current flow over a first part of the DC power circuit with a second value of a second current flow over a second part of the DC power circuit;generating a voltage, wherein the voltage is proportional to a difference between the first and the second values;outputting, responsive to the voltage exceeding the threshold voltage for a threshold time, a signal, the signal configured to cause a short-circuit in the first part of the DC power circuit; andinterrupting the first part of the DC power circuit responsive to the short-circuit.2. The method of claim 1 , wherein the comparing is performed by a comparator device comprising an electronic transducer.3. The method of claim 1 , further comprising:comparing the first value of the first current flow over the first part of the DC power circuit with a third value of a third current flow over a third part of the DC power circuit.4. The method of claim 1 , wherein the generating comprises:outputting a voltage value corresponding to the voltage; andgenerating the voltage at a device that receives the voltage value.5. The ...

GROUND-FAULT CIRCUIT INTERRUPTER

A ground-fault circuit interrupter (GFCI) device, including a relay for control a switch to be in an open position or a closed position, the relay including a first coil and a second coil, wherein when both the first coil and the second coil are non-conductive, the switch is caused to be in the open position. The GFCI also includes a relay start circuit connected to the first coil for causing the first coil to be conductive or non-conductive, wherein when the first coil is conductive, the first coil causes the switch to be in the closed position, but after the first coil is conductive, the coil start circuit becomes non-conductive. The GFCI further includes a relay sustain circuit connected to the second coil for causing the second coil to be conductive or non-conductive. In addition, the GFCI includes a ground fault detect circuit for causing both the relay start circuit and the relay sustain circuit to become non-conductive when a fault signal is detected, causing both the first coil and the second coil to be non-conductive, thereby causing the switch to be in the open position. 1. A ground-fault circuit interrupter (GFCI) device , comprising:a relay for control a switch to be in an open position or a closed position, the relay including a first coil and a second coil, wherein when both the first coil and the second coil are non-conductive, the switch is caused to be in the open position;a relay start circuit connected to the first coil for causing the first coil to be conductive or non-conductive, wherein when the first coil is conductive, the first coil causes the switch to be in the closed position;a relay sustain circuit connected to the second coil for causing the second coil to be conductive or non-conductive; anda ground fault detect circuit for causing both the relay start circuit and the relay sustain circuit to become non-conductive when a fault signal is detected, causing both the first coil and the second coil to be non-conductive, thereby causing the ...

CONNECTION CIRCUIT OF INTERCONNECT DEVICE

Disclosed is a connection circuit capable of detecting erroneous wiring of an interconnect device in order to prevent a safety fuse from being melted and quickly perform an overcurrent protection in the event of erroneous wiring or the like. In this connection circuit of the interconnect device, a preliminary wiring check operation is performed when a power control unit receives a power-on signal. It is detected whether or not a power line and a ground line are short-circuited in the preliminary wiring check operation. When the power line and the ground line are not short-circuited, an operation instruction is output from the power control unit to a power unit. As a result, power is turned on after it is checked whether or not the power line and the ground line are short-circuited in advance. Therefore, it is possible to prevent the safety fuse from being melted. 1. A connection circuit of an interconnect device , comprising:at least one interface for connecting the interconnect device;at least one power unit for supplying power to the interface through a power line;at least one safety fuse provided between the power unit and the interface;at least one ground line for grounding the interface; anda power control unit configured to perform an output control to the power unit,wherein a preliminary wiring check operation is performed as the power control unit receives a power-on signal,it is detected whether or not the power line and the ground line are short-circuited on the basis of the preliminary wiring check operation, anda power output control signal is output from the power control unit to the power unit when the power line and the ground line are not short-circuited.2. The connection circuit of the interconnect device according to claim 1 , further comprising a short-circuit checker configured to detect a short circuit between the power line and the ground line claim 1 ,wherein, in the preliminary wiring check operation, the power control unit transmits, to the ...

Protective Wiring Device

The present invention is directed to electrical wiring device that includes: a housing including a cover and a back body, the housing further including a plurality of line terminals and a plurality of feed-through load terminals, a plurality of receptacle load terminals substantially aligned with a plurality of receptacle openings; a fault protection circuit disposed inside the housing, having sensing components mounted to one side of a first PCB, the fault protection circuit being configured to provide a fault detection signal in response to detecting at least one type of predetermined fault condition; a circuit interrupter disposed inside the housing, the circuit interrupter being configured to couple the plurality respective terminals in response to a reset stimulus being applied to a reset button, the circuit interrupter being configured to decouple the respective plurality of terminals in a second state when the latching element and a reset pin are decoupled in response to the fault detection signal; and an indication circuit having an indicator to alert the user of device status. 1. An electrical wiring device comprising:a housing assembly including a cover assembly and a back body member, the cover assembly including a front cover, the front cover having a plurality of receptacle openings, the housing assembly further including a plurality of line terminals and a plurality of feed-through load terminals, the housing assembly also including a plurality of receptacle load terminals substantially aligned with the plurality of receptacle openings;a fault protection circuit disposed inside the housing, having sensing components mounted to one side of a first PCB, the fault protection circuit being configured to provide a fault detection signal in response to detecting at least one type of predetermined fault condition;a circuit interrupter disposed inside the housing, the circuit interrupter being configured to couple the plurality of line terminals, the plurality ...

ANNUNCIATING OR POWER VENDING CIRCUIT BREAKER FOR AN ELECTRIC LOAD

A circuit breaker for an electric load includes first and second terminals; a number of first separable contacts each electrically connected between one of the first terminals and one of the second terminals; a first mechanism to open, close or trip open the first contacts; a number of second separable contacts each electrically connected in series with a corresponding one of the first contacts; a second mechanism to open or close the second contacts; a processor to cause the second mechanism to open or close the second contacts, annunciate through one of the second terminals a power circuit electrical parameter for the electric load, receive from a number of the second terminals a confirmation from or on behalf of the electric load to cause the second mechanism to close the second contacts, and determine a fault state operatively associated with current flowing through the second contacts. 1. A power vending circuit breaker for an electric load , said power vending circuit breaker comprising:a plurality of first terminals;a plurality of second terminals;a number of separable contacts, at least one of said number of separable contacts being electrically connected between one of said first terminals and one of said second terminals;a thermal-magnetic protection circuit electrically connected in series with said at least one of said number of separable contacts between said one of said first terminals and said one of said second terminals;a metering circuit within said power vending circuit breaker and operatively associated with power flowing through said at least one of said number of separable contacts between said one of said first terminals and said one of said second terminals;a mechanism structured to open or close said number of separable contacts;a processor within said power vending circuit breaker and structured to cause said mechanism to open or close said number of separable contacts, to input a plurality of power values from said metering circuit and to ...

DISCONNECTION OF A STRING CARRYING DIRECT CURRENT POWER

A direct current (DC) power combiner operable to interconnect multiple interconnected photovoltaic strings is disclosed. The DC power combiner may include a device adapted for disconnecting at least one photovoltaic string from the multiple interconnected photovoltaic strings, each photovoltaic string connectible by a first and second DC power line. The device may include a differential current sensor adapted to measure differential current by comparing respective currents in the first and second DC power lines. A first switch is connected in series with the first DC power line. A control module is operatively attached to the differential current sensor and the first switch. The control module may be operable to open the first switch when the differential current sensor measures the differential current to be greater than a maximum allowed current differential, thereby disconnecting the photovoltaic string from the interconnected photovoltaic strings. 1. A method of detecting operational abnormality within a solar power array that comprises at least one power generating string , said at least one power generating string comprising a plurality of serially connected solar module assemblies , said method comprising the steps of:determining at least one measured, instantaneous intra-string current difference for each of said at least one power generating string,wherein each of said at least one measured, instantaneous intra-string current difference is an instantaneous difference in string current between a respective two points on said at least one power generating string;assessing a presence of said operational abnormality between said respective two points based on said measured, instantaneous intra-string current difference; andrepeating said steps of determining and assessing.2. A method of detecting operational abnormality within a solar power array as described in wherein said step of determining comprises the step of determining at least two measured claim 1 , ...

FAST SWITCH

The fast switch includes: a housing; a vacuum interrupter installed in the housing, connected to a main circuit, and configured to open and close the main circuit; a contact spring coupled to a mover of the vacuum interrupter, and configured to provide a contact force; an insulating rod connected to the contact spring; a permanent magnet actuator connected to a lower end of the insulating rod, and configured to provide a switching driving force; a first capacitor configured to provide a discharge current to a coil of the permanent magnet actuator; a driving coil connected to a lower end of the permanent magnet actuator; and a second capacitor configured to provide a discharge current to the driving coil.

SEMICONDUCTOR INTEGRATED CIRCUIT FOR DETECTING LEAKAGE CURRENT AND EARTH LEAKAGE CIRCUIT BREAKER HAVING THE SAME

The present invention provides a semiconductor integrated circuit for detecting leakage current to determine whether an electric leakage occurs in an electric line based on an induced voltage input from a leakage current detection unit installed in the electric line, and an earth, leakage circuit breaker having the semiconductor integrated circuit. A semiconductor integrated circuit for detecting leakage current includes: a signal amplification unit configured to amplify the induced voltage; an interruption determination unit configured to compare an output voltage output from the signal amplification unit with a preset reference voltage, and output an interruption signal for interrupting a power supply to the electric line; a flare current stabilization (FCS) circuit for a signal amplification unit connected to the signal amplification unit; and a flare current stabilization (FCS) circuit for an interruption determination unit connected to the interruption determination unit. 1. A semiconductor integrated circuit for detecting leakage current configured to determine whether an electric leakage occurs in an electric line based on an induced voltage input from a leakage current detection unit installed in the electric line , the semiconductor integrated circuit for detecting leakage current comprising:a signal amplification unit configured to amplify the induced voltage;an interruption determination unit configured to compare an output voltage output from the signal amplification unit with a preset reference voltage for determining whether to cut off an electrical power, and output an interruption signal for interrupting a power supply to the electric line when the output voltage is the reference voltage or more; anda flare current stabilization (FCS) circuit for a signal amplification unit connected to the signal amplification unit to stabilize a flare current in the signal amplification unit, thus to reduce a variation in a sensitivity current.2. The semiconductor ...

GROUND FAULT CIRCUIT INTERRUPTER

A ground fault circuit interrupter includes a reset key, a reset mechanism, a conductive assembly configured to connect a power supply input side to a load side, a leakage signal detection circuit, and an electromagnetic tripping mechanism. The reset mechanism comprises a reset support and a support return mechanism. The reset support comprises a reset bracket and a support reset spring. The support return mechanism comprises a reset pole, a reset key spring, a compression spring, a reset block, a compression spring container, a reset slider, and a contact conductive part. The contact conductive part is disposed at a lower end of the reset slider and is configured to align with a position of a switch contact on a first PCB board. A state of contact or separation between the contact conductive part and the switch contact is configured to control an on-off state of the conductive assembly. 1. A ground fault circuit interrupter , comprising:a reset key;a reset mechanism;a conductive assembly configured to connect a power supply input side to a load side;a leakage signal detection circuit; and the reset mechanism comprises a reset support and a support return mechanism;', 'the reset support comprises a reset bracket and a support reset spring disposed in the reset bracket;', 'the support return mechanism comprises a reset pole, a reset key spring, a compression spring, a reset block, a compression spring container, a reset slider, and a contact conductive part;', 'the reset support has a first position in a reset state and a second position in a tripping state;', 'the support return mechanism is engaged with the reset support such that the reset support is biased to slide from the first position to the second position;', 'the contact conductive part is disposed at a lower end of the reset slider and is configured to align with a position of a switch contact on a first PCB board; and', 'a state of contact or separation between the contact conductive part and the switch ...

Grounded neutral detection circuit and circuit interrupter including the same

A circuit interrupter including a line conductor, a neutral conductor, a power supply, a ground fault current transformer structured to sense a ground fault current from current flowing through the line and neutral conductors, a grounded neutral detection circuit including a filtering stage structured to high-pass filter the ground fault current, and a processor structured to receive an output of the grounded neutral detection circuit and to determine whether a grounded neutral is present based on the output of the grounded neutral detection circuit.

SELF-TEST GFCI DEVICE WITH DUAL SOLENOID COIL ELECTRONIC CONTROL

A wiring device including a fault detection circuit, an actuating device, a first switching device, a second switching device, and a third switching device. The fault detection circuit is configured to detect one or more fault conditions and generate a trigger signal. The first switching device is activated to turn on when said trigger signal is received from said fault detection circuit. The second switching device includes a first pin, a second pin, and a third pin, said second switching device is electrically connected to a first conductive winding of the actuating device and said first switching device. The third switching device includes a first pin, a second pin, and a third pin, said third switching device is electrically connected to a second conductive winding of the actuating device and said first switching device. 1. A wiring device comprising:a fault detection circuit configured to detect one or more fault conditions in said wiring device and generate a trigger signal when said fault condition meets predetermined criteria;an actuating device with coaxial first and second conductive windings, wherein said second conductive winding is wound over said first conductive winding; anda first switching device activated to turn on when said trigger signal is received from said fault detection circuit;a second switching device including a first pin, a second pin, and a third pin, said second switching device electrically connected to said first conductive winding and said first switching device; anda third switching device including a first pin, a second pin, and a third pin, said third switching device electrically connected to said second conductive winding and said first switching device;wherein current flows through said first and second conductive windings in response to said first switching device being turned on.2. The wiring device as recited in claim 1 , further comprising:a second switching device electrically connected to said first conductive winding ...

GROUND FAULT MONITORING SYSTEM AND METHOD

A ground fault monitoring system for an electrical service panel is provided. The ground fault monitoring system includes a current transformer coupled to a primary bonding location of the electrical service panel. The ground fault monitoring system also includes a current monitoring device in communication with the current transformer to detect ground fault electrical current returning to the electrical service panel. The ground fault monitoring system also includes a ground fault output interface in communication with the current monitoring device to provide ground fault status of the electrical service panel. 1. A ground fault monitoring system for an electrical service panel , the ground fault monitoring system comprising:a current transformer coupled to a primary bonding location of the electrical service panel;a current monitoring device in communication with the current transformer to detect ground fault electrical current returning to the electrical service panel; anda ground fault output interface in communication with the current monitoring device to provide ground fault status of the electrical service panel.2. The ground fault monitoring system of claim 1 , further comprising:an auxiliary bonding jumper passing through the current transformer at the primary bonding location of the electrical service panel, the auxiliary bonding jumper providing a low-impedance path between a neutral bus and a grounding electrode conductor of the electrical service panel.3. The ground fault monitoring system of claim 2 , wherein the auxiliary bonding jumper replaces a main bonding jumper at the primary bonding location of the electrical service panel.4. The ground fault monitoring system of claim 2 , wherein the current monitoring device is configured to:detect current flow through the auxiliary bonding jumper and determine a current reading of the current flowing through the auxiliary bonding jumper;compare a ground fault threshold level with the determined current ...

Abnormal current detecting circuit for circuit breaker

본 발명은 온도 변화와 제조공정의 속도변화에 따른 이상전류 검출의 영향이 최소화될 수 있는 회로차단기용 이상전류 검출회로를 제공하려는 것으로, 본 발명에 따라서 전 주기의 검출 대상 교류 입력전류에 대해서 증폭된 입력신호와 기준전압신호를 발생시키는 전 주기 증폭기; 전 주기 증폭기로부터의 양의 주기 증폭신호와 양의 주기 기준전압신호를 비교하여, 양의 주기 증폭신호가 양의 주기 기준전압신호보다 크거나 같을 때, 펄스 신호를 출력하는 양의 주기 비교기; 전 주기 증폭기로부터의 음의 주기 증폭신호와 음의 주기 기준전압신호를 비교하여, 음의 주기 증폭신호가 음의 주기 기준전압신호보다 크거나 같을 때, 펄스 신호를 출력하는 음의 주기 비교기; 양의 주기 비교기와 음의 주기 비교기가 출력하는 펄스 신호를 합성하여 전 주기의 합성신호를 출력하는 합성 회로; 검출 대상 교류 입력전류에 대응하는 상기 입력전압신호의 이상여부를 결정하기 위한 기준전압신호를 발생시키는 기준전압 발생기; 및 합성신호와 기준전압신호를 비교하여, 합성신호가 기준전압신호보다 크거나 같을 때 회로차단기를 차단위치로 구동제어하는 신호를 출력하는 비교 구동회로부를 포함하는 회로차단기용 이상전류 검출회로가 개시된다. 회로차단기, 이상전류 검출회로 An object of the present invention is to provide an abnormal current detection circuit for a circuit breaker which can minimize the influence of abnormal current detection due to temperature change and speed change of a manufacturing process. A full period amplifier for generating the input signal and the reference voltage signal; A positive period comparator for comparing a positive periodic amplification signal from the entire periodic amplifier with a positive periodic reference voltage signal and outputting a pulse signal when the positive periodic amplified signal is greater than or equal to the positive periodic reference voltage signal; A negative period comparator for comparing the negative period amplification signal from the previous period amplifier with the negative period reference voltage signal and outputting a pulse signal when the negative period amplification signal is greater than or equal to the negative period reference voltage signal; A synthesizing circuit for synthesizing a pulse signal output by the positive period comparator and the negative period comparator and outputting a synthesized signal of all periods; A reference voltage generator for generating a reference voltage signal for determining whether the input voltage signal corresponding to the detection target AC input current is abnormal; And a comparison driving circuit ...

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Earth leakage breaker

뇌 서지에 의한 불필요한 차단을 방지한다. Prevent unnecessary interruption by brain surge. 누전 전류를 검출하는 제 1 비교기(7)보다도 임계치가 큰 제 3 비교기(12)로 뇌 서지나 중접지 전류에 의한 접지 전류를 누전 전류로부터 구별하는 동시에, 제 3 비교기(12)의 출력으로 기동하는 단안정 멀티바이브레이터(13)가 작성하는 시간 게이트의 기간 중에, 제 1 비교기(7)로부터 3파 이상의 펄스가 출력되는지의 여부를 3파 카운터(14)로 검출하여 뇌 서지와 중접지 전류를 구별하고, 누전과 중접지 전류의 경우에만 차단 신호 출력 회로(10)로부터 차단 신호(γ)를 출력시킨다. The third comparator 12 having a threshold value larger than that of the first comparator 7 for detecting the leakage current distinguishes grounding current caused by the brain surge or the middle ground current from the leakage current, The three-wave counter 14 detects whether three or more pulses are outputted from the first comparator 7 during the period of the time gate generated by the monostable multivibrator 13, And outputs a cut-off signal γ from the cut-off signal output circuit 10 only in the case of a short-circuit and a short-circuit ground current.

Apparatus, method, and system for monitoring leakage current and detecting fault conditions in electrical systems

Disclosed herein are apparatus, methods, and systems for monitoring and detection of conditions indicative of an electrical fault for an electrical circuit or system. In one aspect, a central control can simultaneously monitor a plurality of geographically distributed electrical circuits or systems for conditions that have been predetermined to be indicative of an electrical fault or concern, and provide either some communication (e.g., a warning) or instruction (e.g., to terminate power) back to the monitored circuit/system, the owner/operator/user of the circuit/system, or both. The central control can collect, store, mine, and analyze data from the diverse monitoring of plural systems. A knowledge base can be built up over time and used to establish monitoring of the same, other circuits and systems, develop more accurate monitoring and communication of faults or concerns, and account for factors related to normal operation of a circuit or system.

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Earth leakage detector testing device

본 발명은 누전차단기 시험장치에 관한 것으로 특히, 시험을 위한 2열 시험 스위치와; 상기 시험 스위치의 접점신호 입력시 채터링을 방지해 주는 RS 플립플롭회로부와; 상기 RS 플립플롭회로부로부터 입력펄스 신호를 받아 일정시간 동안 구형파 펄스를 발생시키는 타이머부와; 상기 타이머부에서 출력되는 구형파 펄스형 전류를 일정레벨로 증폭시켜 주는 전류증폭부와; 상기 전류증폭부의 출력신호에 의해 선택적으로 구동되어 감도전류를 단속시키는 스위칭부와; 선택 스위치의 가동단자 위치에 연결된 감도저항값에 부응하는 시험전류를 상기 스위칭부측으로 출력시켜 주는 시험전류 선택부와; 교류전압을 직류전압으로 정류시켜 상기 시험전류 선택부에 공급시켜 주는 정류부와; 상기 정류부와 정전압 정류부 사이에 설치되어 램프의 점등상태로 접지선이 접속되어 있는지, 극성이 바뀌었는지 등의 여부를 확인해 주는 접지시험부와; 상기 접지시험부의 중성선상에 항상 일정한 직류전압을 공급시켜 주는 정전압 정류부로 구성하여, 감전 및 전기화재예방을 위해 설치된 누전차단기가 정상적으로 작동하는가, 콘센트의 배선이 올바르게 접속되어 있는가 등을 안전관계자나 전기에 관한 전문지식이 없는 사람도 쉽고 간단하게 확인할 수 있도록 한 것이다. The present invention relates to a circuit breaker test apparatus, and in particular, a two-row test switch for the test; An RS flip-flop circuit unit for preventing chattering when the contact signal of the test switch is input; A timer unit receiving an input pulse signal from the RS flip-flop circuit unit and generating a square wave pulse for a predetermined time; A current amplifier for amplifying the square wave pulse current output from the timer unit to a predetermined level; A switching unit which is selectively driven by an output signal of the current amplifying unit to interrupt a sensitivity current; A test current selector for outputting a test current corresponding to a sensitivity resistance value connected to a movable terminal position of a selector switch to the switching unit; A rectifier for rectifying an AC voltage to a DC voltage and supplying the test current to the test current selector; A ground test unit installed between the rectifying unit and the constant voltage rectifying unit to check whether the ground wire is connected to the lamp in a lit state, and whether the polarity is changed; It is composed of a constant voltage rectifier which always supplies a constant DC voltage on the neutral wire of the ground test part, and whether the ground fault circuit breaker installed to prevent electric shock and electric fire works normally ...

Apparatus and method for dynamic performance test of digital protection relay

The present invention relates to an apparatus for automating a protection relay dynamic characteristic test, and to a method thereof. More specifically, the apparatus for automating a protection relay dynamic characteristic test capable of receiving characteristics of each system of the protection relays, selecting types of failures (short-circuit failure, ground failure, synchronous phase-out, generator unbalance, etc.) which can be occurred in accordance with a target system, generating and transmitting an arbitrary failure signal to the protection relay, and performing a dynamic characteristic test by analyzing a generated operation signal in real time.

Cable way abnormality detector, and switch including the same

【課題】電源回路部の発熱を低減できる電路異常検出装置、及びそれを備える開閉器を提供する。【解決手段】電源回路部２０は、蓄電部３０と、スイッチ部４０と、電圧検出部５０とを備える。蓄電部３０は、異常検出部６０の検出対象の電路から入力端子部２１に入力される直流電圧によって充電される。蓄電部３０に充電された電圧は電源電圧Ｖ１として異常検出部６０に出力される。スイッチ部４０は、蓄電部３０の状態を、検出対象の電路から入力端子部２１を介して蓄電部３０に充電電流が流れる充電状態と、蓄電部３０に充電電流が流れない充電停止状態とのいずれかに切り替える。電圧検出部５０は、蓄電部３０から異常検出部６０に出力される電源電圧Ｖ１を検出する。スイッチ部４０は、電圧検出部５０の検出結果に応じて制御される。【選択図】図１

GFCI that cannot be reset until wired correctly on line side and power is applied

A method and apparatus for a protection device for indicating when ground fault protection is not being provided by the protection device. The protection device includes source and load terminals between a conductive path and face terminals. The protection device further includes a latching mechanism, adapted to be operable between a first state in which the latching mechanism permits electrical contact between the source terminals and the load terminals and a second state in which the contact is broken; an alarm indicator, adapted to provide an indication that the protection device is not providing ground fault protection; and a fuse, adapted to blow when the latching mechanism fails to open during a manual test of the protection device.

GFCI that cannot be reset until wired correctly on line side and power is applied

An apparatus and method for preventing the misfiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

Circuit interrupter with continuous self-testing feature

A circuit interrupter includes a current transformer, phase conductor and neutral conductor. The phase conductor and the neutral conductor are each configured to pass through the transformer from line side to load side that are defined by the current transformer. The circuit interrupter generates a continuous test current by continuous current imbalance established between the load side of the phase conductor and the line side of the neutral conductor, or between the line side of the phase conductor and the load side of the neutral conductor. A continuous test conductor may be coupled correspondingly to establish the current imbalance. Alternatively, an integrated circuit coupled correspondingly receives power and is energized by a quiescent current thereby. The current imbalance is established by the quiescent current. The current transformer detects the quiescent current as the continuous test current. Corresponding methods are also disclosed.

GFCI test monitor circuit

A circuit interrupting device having an auto-monitoring circuit for periodically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, generates a self-test fault condition and determines whether the detection mechanisms within the device properly detect the self-test fault. Processing an early detection signal determines whether the self-test fault was properly detected without interfering with the normal operation of the detection circuitry and without causing a false trip within the device. Additional functionality of the auto-monitoring circuit permits automatic verification that the device is properly wired, that is, not miswired, and determines whether the device has reached the end of its useful life.

Circuit breaker with a dual test button mechanism

In an exemplary embodiment of the invention, a dual test mechanism is presented for use in a circuit breaker (100). More specifically, the dual test mechanism includes a dual test button (10) which comprises a single switch for testing both the AFCI and GFCI circuits of the breaker. The test mechanism includes a circuit board (34), which forms a part of the circuit breaker (100), and a test button assembly (32) which includes the dual test button (10) and signaling components (40, 42) which are electrically connected to the circuit board (34).

Circuit breaker with dual function test button remote from test circuit

A miniature circuit breaker has an arc fault detector and a ground fault detector each with its own test circuit. Test switches for the two test circuits are mounted on a printed circuit board and share a common test contact formed by a flat U-shaped leaf spring. The common test contact is deflected into engagement with another test contact for one or the other of the two test switches by a remotely mounted common test button through a common test actuating member which is moved generally rectilinearly by rocking the common test button.

GFCI that cannot be reset until wired correctly on line side and power is applied

An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

GFCI that cannot be reset until wired correctly on line side and power is applied

An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

GFCI that cannot be reset unit wired correctly on line side and power is applied

An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

GFCI that cannot be reset until wired correctly on line side and power is applied

An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

GFCI that cannot be reset until wired correctly on line side and power is applied

An apparatus and method for preventing the miswiring of a protection device. The protection device includes line terminals and load terminals. The protection device further includes a latching mechanism, adapted to move between a closed state which establishes electrical contact between said line and load terminals, and an open state which prevents electrical contact between said line and load terminals; and an initial reset prevention mechanism, adapted to prevent said latching mechanism from being set in said closed state until power is applied to said line terminals.

GFCI that cannot be reset until wired correctly on line side and power is applied

A method and apparatus for a protection device for indicating when ground fault protection is not being provided by the protection device. The protection device includes source and load terminals between a conductive path and face terminals. The protection device further includes a latching mechanism, adapted to be operable between a first state in which the latching mechanism permits electrical contact between the source terminals and the load terminals and a second state in which the contact is broken; an alarm indicator, adapted to provide an indication that the protection device is not providing ground fault protection; and a fuse, adapted to blow when the latching mechanism fails to open during a manual test of the protection device.

Circuit interrupter with continuous self-testing feature

A circuit interrupter includes a current transformer, phase conductor and neutral conductor. The phase conductor and the neutral conductor are each configured to pass through the transformer from line side to load side that are defined by the current transformer. The circuit interrupter generates a continuous test current by continuous current imbalance established between the load side of the phase conductor and the line side of the neutral conductor, or between the line side of the phase conductor and the load side of the neutral conductor. A continuous test conductor may be coupled correspondingly to establish the current imbalance. Alternatively, an integrated circuit coupled correspondingly receives power and is energized by a quiescent current thereby. The current imbalance is established by the quiescent current. The current transformer detects the quiescent current as the continuous test current. Corresponding methods are also disclosed.

Bidirectional earth leakage breaker for distributed power supply

The present invention relates to a bidirectional earth leakage breaker for distributed power supply. The bidirectional earth leakage breaker for distributed power supply comprises: a breaking unit for disconnecting power by each phase according to on and off of a switch; a trip coil for turning on and off each switch to disconnect power by each phase of the breaking unit; a test button for applying power forcibly operated by a user to a trip coil operating unit applying operating power to the trip coil and checking whether the switches by each phase of the breaking unit are normally turned on and off; a test direction selecting unit for selecting one of first and second breaking units to be tested in the breaking unit by pressing the test button; and a test direction display unit for displaying a power direction selected through the test direction selecting unit to test operations of the breaking unit.

Earth leakage breaker

본 발명은 누전차단기에 관한 것으로, 종래에는 누전상태가 아닌 부(-)의 강한 서지(surge)에 대해서 누전상태로 감지하여 오동작을 발생시키고, 교류라인의 전류차이가 정(+), 부(-) 방향에도 있어서 누전이 일어나는데 정(+)방향에 대해서는 누전감지를 행하지 않으므로 정확한 누전감지에 의한 차단을 행하지 않는 문제점이 있었다. 따라서 본 발명은 교류라인에서 누전 발생시 그 교류라인의 전류차에 대해 정(+)의 방향과 부(-)의 방향에 대한 누전상태를 정확히 감지하여 차단동작을 행하고, 번개와 같은 강한 서지(surge)에 대해 누전상태로 감지하여 않아 오동작을 방지하도록 한다.

Leakage detection and control circuit

Electrosurgery safety circuit

A safety circuit suitable for use in electrosurgery apparatus to prevent electrical burns is described herein. A current sensing transformer having a pair of primary windings and a single secondary or sense winding is provided. The primary windings are connected so as to compare the input current applied to an active electrode with the output current from an indifferent plate. When the comparison is unequal, the sense winding generates an error signal that warns the operator of the electrosurgery apparatus of a possible electrical burn situation. Alternatively, the primary windings are connected so as to sense the equality of output currents from two indifferent plates. Lack of equality causes an error signal to be generated to warn the operator.

Electrosurgical unit

An electrosurgical unit for generating electrical signals intended for application to the body of a patient via an electrosurgical electrode, is disclosed. Cutting signals and coagulation signals, as well as a blend of both signals, are generated by the unit under the control of a mode control circuit that is responsive to the operation of selector switches and/or manually operated actuators. Selected patient and unit conditions are monitored to have the electrosurgical unit disabled under certain dangerous conditions.

A solid state earth leakage circuit breaker

이 발명에 따른 반도체 누전차단기는, 부하에 대한 서지 및 낙뢰에 의한 과도전압으로부터 부하를 보호하기 위해 제1 전력용 반도체를 이용하며, 아크 감지 보호기, 누설전류측정기 및 서지 보호기를 구비하여 이루어지는 외부 서지보호부; 부하로 유입되는 부하 전류, 부하고장에 따른 단락전류로 인하여 발생되는 과전류를 검출하고, 선로의 누설 전류를 차단하는 스위치 기능을 하는 제2 전력용 반도체를 이용한 스위치; 비정상적인 조건에서도 방열을 할 수 있는 방열장치, 미리 정해진 전류값까지만 전류의 흐름을 제한하기 위한 전류제한기, 차단기로 유입되는 전류값을 측정하기 위한 전류측정기, 및 원하는 차단전류값을 설정하기 위한 전류범위 설정기를 구비하여 이루어지는 반도체 누전차단부; 차단기를 전체적으로 제어하기 위한 제어기, 부하를 원격 감시 및 제어하고, Opto-isolator로 구성된 전기적 절연 회로에 의하여 교류 전압이 투입된 다른 회로 구성부와 전기적으로 분리되어 있는 원격제어용 인터페이스부, 차단기 내부의 절연을 유지하기 위한 차단기 절연부, 및 부하가 위치하고 있는 현장에 설치되어 부하를 수동으로 제어하기 위한 수동버튼 스위치를 포함하는 수동제어용 인터페이스부를 구비하여 이루어지는 제어부; 상기 전류제한기와 전류측정기에 의하여 제어되는 부하; 온도가 비정상적으로 상승하는 경우에 전류흐름을 차단하여 상기 스위치 회로를 보호하는 온도제어회로; 과전류상태, 지락전류를 포함한 누설전류상태, 고온상태, 전압, 전류, 전력량, 역률, 수용율, 절연저항 상태, 순시 및 평균부하율, 오 동작 상태, 자기 진단 상태 및 주파수를 표시하기 위한 통합 액정 표시장치; 지정한 값 이상 또는 이하의 전류값이 되었을 때 경보를 울리기 위한 부저; 외부의 PLC와 통신하기 위해 사용되는 PLC 통신모듈; 상기 반도체 누전차단기를 인터넷 웹 상에서 원격감시제어 하기 위한 XML 원격제어모듈을 구비하여 이루어지는 것을 특징으로 한다. The semiconductor earth leakage circuit breaker according to the present invention uses a first power semiconductor to protect the load from a transient voltage caused by a surge and a lightning strike, and an external surge provided with an arc sensing protector, a leakage current meter, and a surge protector. Protection; A switch using a second power semiconductor that detects an overcurrent generated due to a load current flowing into a load and a short circuit current according to a fault, and switches off a leakage current of a line; Heat dissipation device that can radiate heat under abnormal conditions, current limiter to limit the flow of current only up to a predetermined current value, current meter to measure the current flowing into the breaker, and current to set the desired breaking current value A semiconductor earth leakage blocking unit comprising a range setter; Controller to control the breaker as a whole, remote monitoring and control of the load, remote control interface part electrically isolated ...

Device and method of differential protection and electric device containing such device

FIELD: electricity. SUBSTANCE: invention relates to electrical engineering. The differential protection device contains the differential noise measurement and processing circuits for providing of a disconnecting signal (D) to an executive mechanism (4). The detection module (13) detects high power signals (11, 12) disturbing the differential current measurement. The shutdown circuit (14) connected to the detection module (13) disconnects the feeding of the disconnecting signal when the detection module detects existence of high power signals (11, 12). Existence of high power signals (11, 12) is detected by tracking of absence of the measuring signal passing near zero (Ids) within the pre-set time interval (TI). The differential protection method comprises the stages at which the high power signals disturbing the measurement of differential current measurement signal are detected, and disconnection is cancelled when the measurement is disturbed by high power signals. EFFECT: increase of level of protection from current noises. 15 cl, 14 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК H02H 3/33 (13) 2 546 130 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2010151785/07, 16.12.2010 (24) Дата начала отсчета срока действия патента: 16.12.2010 (72) Автор(ы): ЗЕЛЛЕР Клеман (FR), ТИАН Симон (FR) 17.12.2009 FR 09/06112 (43) Дата публикации заявки: 27.06.2012 Бюл. № 18 R U (73) Патентообладатель(и): ШНЕЙДЕР ЭЛЕКТРИК ЭНДЮСТРИ САС (FR) Приоритет(ы): (30) Конвенционный приоритет: (45) Опубликовано: 10.04.2015 Бюл. № 10 RU2244972C1,20.01.2005. EP1441429A1, 28.07.2004 2 5 4 6 1 3 0 R U (54) УСТРОЙСТВО И СПОСОБ ДИФФЕРЕНЦИАЛЬНОЙ ЗАЩИТЫ И ЭЛЕКТРИЧЕСКИЙ ПРИБОР, СОДЕРЖАЩИЙ ТАКОЕ УСТРОЙСТВО (57) Реферат: Изобретение относится к электротехнике. детектируется путем отслеживания отсутствия Устройство дифференциальной защиты содержит прохождения вблизи нуля измерительного схемы измерения и обработки дифференциальных ...

Fast switch fault current limiter and current limiter system

전압 제어 리액터(VCR) 및 고속 스위치 고장 전류 제한기(FSFCL)를 포함하는 고장 전류 제한기 회로는 정상 상태 동작 동안 부하 전류를 전도시키고, 부하 전류가 고장 전류 제한들을 초과할 때 부하 전류를 제한하도록 동작한다. FSFCL은, 전기적 차단기 접촉부들을 갖는 차단기, 전기적 차단기 접촉부들에 전기적으로 결합된 코일, 전기적 차단기 접촉부들에 기계적으로 결합된 플런저, 병렬 전압 제어 리액터(VCR), 과도 과전압 제어 회로(transient overvoltage control circuit; TOCC)를 포함할 수 있으며, 여기에서 코일을 통해 문턱 레벨보다 더 큰 전류가 흐를 때, 플런저를 움직이기 위한 강도를 갖는 자기장이 생성되며, 플런저의 움직임은 차단기 내의 접촉부들을 개방하도록 동작하며, 고장 전류를 VCR 및 TOCC로 전달하고, 전체 시스템 고장 전류를 제한한다. A fault current limiter circuit comprising a voltage controlled reactor (VCR) and a fast switch fault current limiter (FSFCL) conducts load current during steady state operation and limits the load current when the load current exceeds the fault current limits. Works. The FSFCL includes a circuit breaker having electrical breaker contacts, a coil electrically coupled to the electrical breaker contacts, a plunger mechanically coupled to the electrical breaker contacts, a parallel voltage control reactor (VCR), and a transient overvoltage control circuit; TOCC), wherein when a current greater than a threshold level flows through the coil, a magnetic field is generated having the strength to move the plunger, the movement of the plunger acts to open the contacts in the breaker, and breakdown Pass current to the VCR and TOCC, limiting the total system fault current.

Trip device for earth leakage breaker

Disclosed is an instantaneous trip device (600) of an earth leakage breaker. The instantaneous trip device (600) of the earth leakage breaker according to the present invention comprises: a magnet plate (110) including a pair of magnet plate protrusions (114) at an upper end and a magnet plate protruding part (112) at a lower side of the protrusions (114); a yoke (120) including a pair of yoke insertion holes (124) into which the pair of magnet plate protrusions (114) of the magnet plate (110) is inserted and a yoke protruding part (122) protruding to a side opposite to the pair of yoke insertion holes (124); and a bimetal (200) provided with a bimetal third insertion hole (206) at one side and a bimetal first insertion hole (202) bent upwardly at the other side to have a bent upper end coupled to the yoke protruding part (122) of the yoke (120). The present invention provides the instantaneous trip device (600) which is fitted if a magnet plate assembly (100) is pushed into the bimetal first insertion hole (202) positioned at the bent upper end of the bimetal (200) to be easy to assemble.

Determination of the fault current component of a differential current

为了确定差动电流的故障电流分量，所述差动电流作为在传送AC电流发生器的电流的多条线路上的电流总和来测量，产生电信号，所述电信号取决于AC电流发生器处存在的相对于地电位的发生器电压，并与所述差动电流的漏电流分量同相。通过将所述电信号乘以缩放系数来对其进行缩放；以及从所述差动电流中减去经缩放的电信号，以获得差数。重复更新所述缩放系数，以使得在所述缩放系数的当前值下所述差数的有效值达到最小值。

automatic return device the knob of earth leakage circuit breaker

The disclosed disclosure is based on the fact that several turning links used for returning the operation knob to the ON state are formed by a single lever so that the return device can operate accurately and smoothly without malfunction so that the reliability and stability of the product can be maximized However, An automatic return device for an operation knob for an earth leakage breaker according to an embodiment of the present invention includes: An automatic return device of an operation knob connected to an operation knob of an earth leakage breaker to return the operation knob to switch the earth leakage breaker to an on state, comprising: The first fixing part is rotatably connected to any position below the operation knob which is rotatably mounted on the connection block of the earth leakage breaker and the second fixing part is formed to extend in a predetermined length to one side of the first fixing part, A handle bar having a pressing surface inclined at an arbitrary angle above the first fixing part and a pressing jaw formed on the other side of the first fixing part; A solenoid valve for rotating the operation knob when the operation knob is driven by an external electrical signal to turn the earth leakage breaker on or off, and a top end of the plunger is rotatably connected to a slot of the handlebar by a fixing pin, And an automatic return device for an operation knob for an earth leakage breaker.

apparatus for earth leakage circuit breaker

The present invention is provided to improve driving reliability of a test switch while improving production economic efficiency by simplifying components. The earth leakage circuit breaker of the present invention includes: a main body unit which is coupled with a cover penetrated by a pressing type test switch at the upper part and has a power terminal unit and a load terminal unit in both sides; a trip switching unit which is mounted on the main body unit, switches a selective connection of the power terminal unit and the load terminal unit, and has a trip driving unit for a trip operation when leakage is sensed; a zero current transformer which senses leakage by being included to be penetrated by a connecting wire of the power terminal unit and the load terminal unit; a solenoid unit which includes a bobbin wound by a coil to which driving power of a plunger is applied to drive the trip driving unit when leakage is sensed in the zero current transformer; a printed circuit board which includes a circuit unit of controlling the appliance of the driving power by being combined with the rear side of the solenoid unit and the zero current transformer; a separation support member which is formed of an electrical insulation material so that a gap space is maintained between the rear surface of the solenoid unit and the front surface of the printed circuit board; a test pin which is arranged inside the gap space by penetrating the printed circuit board; and an elastic contact piece which is included to make a terminal connection unit, extended downwards from a base elastic unit, be in elastically contact with the test pin according to pressure of the test switch. The base elastic unit is bent and joined to face the upper side surface of the separation support member by being extended upwards from a pair of fixed end parts whose end is fixated by penetrating the printed circuit board.

Combined residual current device

FIELD: electrical engineering.SUBSTANCE: invention relates to electrical engineering, in particular to automatic devices for protection of people against electric shock and for disconnection of electric consumers in case of deviation of electric energy quality from normalized GOST 32144-2013 values. For this purpose, in residual current device, comprising leakage current sensor (1), peak rectifier-amplifier (2), inertial RC-circuit with time-setting resistor and capacitor (3), threshold element (4), actuating element (5), power supply (6), stabilitron (7), comparator (8), logical OR element (9), second time setting resistor (10), controlled divider (11) and resistor (12), additionally introduced are selective filters of fifth (13) and seventh (14) supply voltage harmonics and two windings (15) and (16) arranged on the leakage current sensor core.EFFECT: technical result of invention consists in expansion of functional capabilities, namely in provision of automatic disconnection of consumers in case of unsinusoidality of supply voltage, which exceeds normalized GOST.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 708 378 C1 (51) МПК H02H 3/33 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02H 3/33 (2019.08) (21)(22) Заявка: 2019114220, 07.05.2019 (24) Дата начала отсчета срока действия патента: Адрес для переписки: 600000, г. Владимир, ул. Горького, 87, ВлГУ, патентная группа (56) Список документов, цитированных в отчете о поиске: RU 2124795C1, 10.01.1999. RU 2214664C2, 20.10.2003. GB 1532814A, 22.11.1978. 06.12.2019 2 7 0 8 3 7 8 R U (54) Устройство защитного отключения комбинированное (57) Реферат: Изобретение относится к электротехнике, в устройство защитного отключения, содержащее частности к автоматическим устройствам для датчик тока утечки (1), пиковый выпрямительзащиты людей от поражения электрическим усилитель (2), инерционную RC-цепь с током и для отключения электропотребителей времязадающими ...

Earth leakage breaker

Novel leakage protection socket

本实用新型公开了一种漏电保护插座，其特征在于：在插座电路板上方设有一对与电源输出端相连的弹性连接输出金属片，弹性连接输出金属片的一端与电源输出端相连，另一端延伸出两只悬臂，在每只悬臂的端部设有动触头，四只悬臂上的四个动触头分别与电源输入金属片上的两个静触头和电源输出导体上的两个静触头上下垂直对应，构成四对电源开关。在电路板上还增设有寿命终止检测电路，在插座接入电源时，可自动进行漏电保护功能的检测，如果发现插座寿命终止了，就阻止复位按钮复位，使插座的负载端和电源输出孔均无电源输出，并通过复位指示灯提醒使用者及时更换漏电保护插座。本实用新型功能全、安全性好，可确实保证使用者的人身安全和电器安全。

bimetal instant trip type circuit breaker

The present invention relates to a bimetal instantaneous trip type breaker with improved driving reliability, which comprises: a housing unit; a movable switching unit; a crossbar; a trip unit; a latch unit; a handle unit; and a suction rotor.

Differential protection device and method thereof, and electric device with the same

一种差分保护设备包括差分故障测量和处理电路，用于向致动器(4)提供跳闸信号(D)。检测模块(13)检测干扰差分电流测量的高能量信号(11，12)。连接到检测模块(13)的禁止电路(14)在检测模块检测到高能量信号(11，12)的存在时禁止提供跳闸信号。通过监视在预定义的时间段(TI)期间不存在测量信号(Ids)的过零点，来检测高能量信号(11，12)的存在。该差分保护方法包括：测量干扰所述差分电流测量信号的测量的高能量信号，以及当测量被高能量信号干扰时，跳闸禁止。

High-sensitivity leakage current detection circuit breaker

本发明公开了一种高灵敏度泄漏电流检测断路器，包括屏蔽线、漏电检测单元和脱扣机构，所述屏蔽线的相线芯线和中线芯线分别包围在两条可导电的壳线中；所述漏电检测单元包括：一对反向串接在电源相线和中线之间的整流二极管、降压电阻、晶闸管以及RC降压滤波电路；所述脱扣机构包括分别由所述晶闸管控制通/断的控制单元，当所述晶闸管中的任一个导通时，则其所对应的控制单元导通，并使脱扣机构产生切断电源的动作。本发明的泄漏电流检测断路器结构简单、可分别检测相线和中线的泄漏电流、且精度较高。

Earth leakage breaker having automatic return funtion

본 발명은 누전에 의한 감전사고, 낙뢰, 노이즈, 과전류 및 단락 발생 등에 의해 전원을 차단하도록 하는 누전차단기에 있어서, 일시적인 누전, 낙뢰, 노이즈 및 오동작으로 차단될 경우, 전원 차단현상을 자동을 검출하여 차단기에서 전원을 재 인가해주고, 독립적인 자동 복구기능 수행으로 자동 복구시의 오동작을 방지한 것으로, 본 발명의 실시예에 의한 자동 복구기능이 구비된 누전차단기는, 고정접점이 형성되는 베이스와, 고정접점에 착탈되는 가동접점이 형성되는 스위치판과, 스위치판을 눌러 가동접점을 고정접점에 접촉시키는 누름판과, 베이스에 장착되는 지지플레이트와, 지지플레이트에 일측이 회동가능하게 제1축핀으로 고정되고, 회동방향에 따라 부하측에 전원을 공급하거나 차단하는 핸들과, 핸들을 고정시킨 제1축핀에 일측이 회동가능하게 고정되는 제1회동편과, 제1회동편의 타측에 고정되는 제2축핀에 회동가능하게 고정되어 핸들 회동시 연동되는 제2회동편과, 제2회동편에 고정되는 제3축핀에 회동가능하게 고정되며, 핸들의 회동에 따라 누름판을 가압하여 스위치판이 눌리도록 하는 가압부재와, 가압부재가 안착되는 걸림턱이 형성되며, 회동시 가압부재의 가압상태를 해제시키는 작동플레이트와, 누전 전류를 감지할 경우 부하측에 공급되는 전류를 차단할 수 있도록, 트립코일에 끼워진 작동핀 후진에 의해 작동플레이트를 잡아당겨 가압부재를 회동시켜 가압상태를 해제시키는 감지부와, 베이스에 장착되며, 전류 공급시 구동되는 플런저에 의해 제2축핀을 가압하여 핸들을 회동시켜 초기위치로 복구시키는 솔레노이드와, 베이스에 착탈가능하게 장착되는 덮개를 포함한다. The present invention provides a circuit breaker for shutting off the power supply due to an electric shock, lightning strike, noise, overcurrent, and short circuit caused by an electric leak. Re-energized the power at the breaker and prevented malfunctions during auto recovery by performing independent auto recovery function. Earth leakage circuit breaker with automatic recovery function according to an embodiment of the present invention, A base having a fixed contact, A switch plate having a movable contact attached to and detached from the stationary contact; A press plate for pressing the switch plate to contact the movable contact with the fixed contact; A support plate mounted on the base, A handle which is fixed to the support plate by a first shaft pin so as to be rotatable and supplies or cuts power to the load side according to the rotation direction; A first rotating piece to which one side is rotatably fixed to the first shaft pin to which the handle is fixed, and a second rotating piece to be rotatably fixed to the second shaft pin to be fixed to the other side of the first rotating piece and interlocked when the handle is rotated; A pressing member which is rotatably ...

Power control device for power load appliances

본 고안은 AC전원에 의해 작동하면서 작동조건으로서 온도, 시간, 압력, 전압/전류중 어느 하나가 설정된 상태에서 실제의 작동조건이 설정된 작동조건에 비해 과도하게 변화되면 자동으로 전원경로를 차단하도록 된 전원부하기기의 전원제어장치에 관한 것이다. The present invention operates by AC power and automatically cuts off the power path when the actual operating condition is excessively changed compared to the set operating condition while any one of temperature, time, pressure and voltage / current is set as the operating condition. The present invention relates to a power supply control apparatus for a power load machine. 본 고안에 따르면, 전원경로상에 설치된 AC전원수전단에 대해 스위칭ON/OFF되는 스위칭접점과, 상기 스위칭접점을 ON/OFF하는 전원ON/OFF레버에 연결레버를 매개하여 접속되어 상기 스위칭접점의 스위칭OFF를 제어하기 위한 전원경로스위칭릴레이, 그 전원경로스위칭릴레이의 릴레이접점에 수동접속되어 상기 전원ON/OFF레버를 매개하여 상기 스위칭접점의 스위칭OFF를 행하기 위한 보조스위치로 이루어진 전원경로스위치와; 상기 전원경로스위치의 전원경로스위칭릴레이에 대해 작동조건에 기준하는 전원경로OFF신호를 발생하여 상기 전원경로스위칭릴레이에 의해 상기 전원ON/OFF레버에 의해 접속된 상기 스위칭접점을 스위칭OFF시키기 위한 작동조건검출제어수단으로 구성되어, 상기 전원경로스위치에 온도, 시간, 압력, 전압/전류중 어느 하나의 작동조건을 설정하여 그 작동조건의 과도한 변화에 기초하여 상기 전원경로스위칭릴레이를 작동시켜 전원경로가 OFF되도록 하게 된다. According to the present invention, the switching contact is switched ON / OFF for the AC power receiving terminal installed on the power path and the power supply ON / OFF lever for connecting the switching contact via a connecting lever connected to the A power path switch comprising a power switch switching relay for controlling switching OFF, and a auxiliary switch for manually switching the switching contact via the power ON / OFF lever and being manually connected to a relay contact of the power switching switch relay; ; An operating condition for generating a power path OFF signal based on an operating condition with respect to the power path switching relay of the power path switch to switch off the switching contact connected by the power ON / OFF lever by the power path switching relay; It consists of a detection control means, by setting the operating condition of any one of the temperature, time, pressure, voltage / current to the power supply path switch and activates the ...

Circuit breaker for protection against leakage current

FIELD: physics. SUBSTANCE: invention relates to a circuit breaker for protection against leakage current, comprising: at least two poles comprising a first pole and a second pole, which are located adjacent to each other; and a test mechanism made at least partially between the first pole and the second pole and configured to switch on or off the test circuit for checking efficiency of the circuit breaker for protection against leakage current. EFFECT: technical result is possibility of installing circuit breaker for protection against leakage current in confined installation space. 21 cl, 17 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 741 568 C1 (51) МПК H01H 83/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H01H 83/04 (2020.08) (21)(22) Заявка: 2020109708, 06.08.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): ШНЕЙДЕР ЭЛЕКТРИК ЭНДЮСТРИ САС (FR) Дата регистрации: 27.01.2021 (56) Список документов, цитированных в отчете о поиске: CN 203553079 U, 16.04.2014. RU 101863 U1, 27.01.2011. RU 2136074 С1, 27.08.1999. JP 4206993 B2, 14.01.2009. US 5899323 A, 04.05.1999. EP 1187158 A1, 13.03.2002. EA 23980 B1, 31.08.2016. 09.08.2017 CN 201720987760.5 (45) Опубликовано: 27.01.2021 Бюл. № 3 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 10.03.2020 (86) Заявка PCT: 2 7 4 1 5 6 8 R U (87) Публикация заявки PCT: WO 2019/029492 (14.02.2019) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ПРЕРЫВАТЕЛЬ ЦЕПИ ДЛЯ ЗАЩИТЫ ОТ ТОКА УТЕЧКИ (57) Реферат: Изобретение относится к прерывателю цепи выполненный с возможностью включения или для защиты от тока утечки, содержащему: по выключения испытательной схемы для проверки меньшей мере два полюса, содержащих первый эффективности прерывателя цепи для защиты от полюс и второй полюс, которые расположены тока утечки. Техническим результатом является рядом друг с другом; ...

Breaker of plastic casing

本发明公开一种能方便安装跳闸机构组件的塑壳断路器(MCCB)。所述MCCB包括开关机构，用于提供驱动力来断开或闭合与所述MCCB连接的电路；多相跳闸机构组件，用于当产生异常电流时将开关机构触发到跳闸位置以断开电路；和基底组件，其构成多个多相断路单元的外壳，并具有用于容纳所述跳闸机构组件的接收部。

Leakage current blocking device

본 발명에 따른 누설 전류 차단 장치는, 전자설비가 연결되는 연결부와, 상기 연결부와 중성선 및 상전원선의 역할을 수행하는 제1전선 및 제2전선에 의해 연결되는 배전부 사이에 구비되어 침수 또는 이물질 유입으로 인한 전류의 누설을 차단하는 누설전류차단부를 포함하고, 상기 누설전류차단부는 절연체로 이루어진 케이스와, 상기 케이스의 일측에 구비되어 상기 배전부와 이어지는 제1전선 및 제2전선, 그리고 상기 배전부의 접지부로 연결되는 제1접지선이 결합 가능한 배전단자대와, 상기 케이스의 일측에 구비되어 상기 연결부와 이어지는 제1전선 및 제2전선, 그리고 상기 연결부의 접지부로 연결되는 제2접지선이 결합 가능한 연결단자대와, 상기 케이스의 내부에 구비되며, 일측이 상기 배전단자대에 결합된 상기 제1접지선과 연결되고, 타측이 상기 연결단자대에 결합된 상기 제2접지선과 연결되는 제1코일부재와, 상기 케이스의 내부에 구비되되, 상기 제1코일부재와 일정 거리 이격되며, 상기 연결단자대에 결합된 상기 제2접지선과 연결되는 제2코일부재 및 상기 케이스의 내부에 충진되어 상기 제1접지선을 통해 유입된 누설 전류가 포집되고, 포집된 누설 전류가 상기 제1코일부재 및 제2코일부재로 전달되도록 하는 전기전도도가 낮은 입자 가루로 이루어진 충진재를 포함한다.

Earth leakage breaker with reverse connection

Pressing type power supply connection terminal part for earth leakage circuit breaker

본 고안은 누전 차단기용 압착식 전원 공급 연결 단자부를 제공한다. 상기 누전 차단기용 압착식 전원 공급 연결 단자부는 이상 전류를 감지하여 선로의 전원을 차단하는 회로가 내장되는 전자 회로부로부터 연장되며, 외부로부터 전원을 인가 받도록 일정 길이 연장되는 전원 공급 라인; 및 전원 공급부와 전기적으로 연결되도록 설치되고, 일단에 상기 전원 공급 라인의 단부가 끼워져 압착 고정되어 전기적으로 연결되고, 상기 전원 공급 라인을 통하여 전원을 상기 전자 회로부에 인가하는 연결부를 포함한다. 따라서, 본 발명은 누전 차단기의 전자 회로부로 연장되는 전원 공급 라인의 단부를 전원 공급부에 마련되는 한 쌍의 그립 몸체 사이에 끼워 압착 고정시킴으로써, 전원 공급 라인의 연결 공정시 요구되는 부품의 수를 줄이고, 신속하게 전원 공급 라인을 그립 몸체로부터 탈착 가능하도록 할 수 있다. The present invention provides a crimped power supply connection terminal for an earth leakage breaker. The power supply connecting terminal unit for the earth leakage breaker may include a power supply line extending from an electronic circuit unit in which a circuit for detecting an abnormal current to cut off power to the line is built in, and extending from the outside to receive power; And a connection part installed to be electrically connected to a power supply part, and one end of the power supply line is fitted into one end to be crimped and electrically connected, and a connection part configured to apply power to the electronic circuit part through the power supply line. Therefore, according to the present invention, the end of the power supply line extending to the electronic circuit portion of the ground fault breaker is sandwiched between a pair of grip bodies provided in the power supply, thereby reducing the number of parts required during the connection process of the power supply line. The power supply line can be quickly detached from the grip body.

Earth leakage breaker with both arc breaker

The present invention relates to an earth leakage breaker combined with an arc blocker, in which an arc detection module for detecting an arc to generate a digital signal is installed on one side of the earth leakage breaker, and the digital signal is provided to a zero phase current transformer of the earth leakage breaker when a harmful arc is detected by the arc detection module, so that the earth leakage breaker is operated by arc/earth leakage detection of the arc detection module. To this end, the present invention provides the earth leakage breaker combined with the arc blocker, integrally including: an earth leakage breaking module including an earth leakage detection unit for detecting a leakage current flowing in a circuit; and an arc detection module installed on one side of the earth leakage breaking module, and configured to detect a harmful arc flowing on the circuit to generate an arc blocking signal, and operate the earth leakage detection unit of the earth leakage breaking module by the arc blocking signal. Accordingly, the earth leakage breaker is simply operated by the arc/earth leakage detection of the arc detection module without affecting a function of the earth leakage breaker at all.

Fault current and differential current detection system capable of preventing spurious triggering of a protection system due to transient interference pulses

本发明提供一种故障或差动电流检测系统。该检测系统检测在向电气设备供电的输导线路上产生的故障或差动电流，并且防止将故障或差动电流提供给电气设备。该检测系统包括检测器、开关和控制器。检测器检测在输导线路上产生的检测电流，并且输出相应的检测信号。控制器输入检测信号，并且根据检测信号确定检测电流是否大于或等于第一预定电流阀值。然后，在检测电流变得大于或等于第一预定电流阀值之后，控制器在预定延迟时间段内抑制将控制信号输出给开关。然后，当预定延迟时间段结束时，控制器确定检测电流是否大于或等于第二预定电流阀值。在检测电流变得大于或等于第二预定电流阀值之后，控制器确定检测电流是否为故障或差动电流。当检测电流为故障或差动电流时，控制器将控制信号输出给开关，以指示开关将故障或差动电流与电气设备相隔离。本发明还提供一种由控制器执行的软件程序。

Leakage breaker

내용 없음. No content.

Electric leakage current braker triggered by resistive ground leakage current

A leakage current circuit breaker is provided to prevent malfunction due to a capacitive leakage current by extracting only resistance leakage current in a synthetic leakage current. A voltage detector(10) detects the voltage of a power line. A synchronization signal generator(20) generates the synchronization signal according to the voltage of the power line. A half-cycle integrator(30) obtains a resistance leakage current of a pulse type by integrating the synthetic leakage current for the half-cycle of the power according to the synchronization signal. A polarity converter converts a negative polarity of the pulse power of the resistance leakage current into a positive polarity. A sample/hold device obtains a resistance leakage current of a step form wave type. In case the resistance leakage current exceeds a reference value, a semiconductor switching device controls the operation of a blocking coil(6) to block the power line.

Subsea protection device

A subsea electrical protection device is described which comprises a re-settable circuit breaker 26 operable to open an electrical circuit in the event of the detection of a loss of insulation resistance and/or current leakage to earth. A subsea control system is also described which comprises an umbilical 12, a control device 14, and a subsea protection device 26 provided therebetween.

Buzzer-type earth leakage breaker

Disclosed is a buzzer type earth leakage breaker. The present invention provides the buzzer type earth leakage breaker, comprising: a frame assembly (20) including a frame (21), a trip bar (23) coupled to the frame (21), a handle (22) coupled to the frame (21) and a latch (24) vertically moving according to an operation of the handle (22); cross bars (40) coupled to a lower part of the latch (24) and turning on/off a contact point of a leakage breaker by the operation of the latch (24); a contact bar assembly (50) forming the contact point on the cross bars (40); and a buzzer (80) electrically connected to the contact bar assembly (50), wherein the contact bar assembly (50) has the pair of contact bars (51, 52) to make the pair of contact bars (51, 52) form the contact point according to the operation of the cross bar (40). The present invention provides the buzzer type leakage breaker, generating a sound for enabling a consumer to know whether it is in a normal state or not when the breaker is actuated in response to a leakage, a short circuit, and an excess current.

An Arc Fault Circuit Interrupter

Sensing Detection Voltage 생성 strong-ARM Latch 증폭 회로의 Block 구성은 Sensing Detection Voltage 생성 strong-ARM 증폭부 (700), CLK 발생부 (701), 아크 Sensor부 (702), Switch 제어부 (710)로 구성된다. S_1 신호 입력 Transistor (706)는 아크 Sensor부 (702) 의 S_1 신호를 입력 시키기 위한 Transistor 소자이다. S_2 신호 입력 Sensing Detection Voltage 생성 Transistor (707)는 아크 Sensor부 (702) 의 S_2 신호를 입력 시키기 위한 Transistor 소자이다. 상기 S_2 신호 입력 Sensing Detection Voltage 생성 Transistor (707)는, 상기 S_1 신호 입력 Transistor (706)와 다른 정해진 값의 Sensing Detection Voltage 특성을 생성하기 위해, 복수개의 Transistor를 직렬로 연결하여 구성하거나 병렬로 연결하여 전류 구동 능력에서 S_1 신호 입력 Transistor (706)와 차이가 나도록 하는 것을 특징으로 한다. 전기 아크(ARC) 사고는 전선이나 전기제품의 손상, 전선의 절연파괴 또는 부적절한 설치, 접속결함, 노화현상 등이 원인이 되어 발생한다. 전기화재의 약 80%가 아크(ARC)로 인한 것이다. 누전차단기는 사람의 감전을 위해, 배선용 차단기는 장비의 보호를 위해 설치되지만, 아크(ARC) 차단기는 전기화재의 주 원인이 되는 전기 아크 사고 발생할 시, 이를 감지하고 전원을 차단하여 전기 화재를 사전에 예방함으로써 재산 및 인명 보호를 가능케 해 준다. The block configuration of the Sensing Detection Voltage generation strong-ARM Latch amplification circuit consists of a Sensing Detection Voltage generation strong-ARM amplification unit 700 , a CLK generation unit 701 , an arc sensor unit 702 , and a switch control unit 710 . The S_1 signal input transistor 706 is a transistor element for inputting the S_1 signal of the arc sensor unit 702 . S_2 Signal Input Sensing Detection Voltage Generation Transistor 707 is a transistor element for inputting S_2 signal of arc sensor unit 702 . The S_2 signal input Sensing Detection Voltage generating Transistor 707 is configured by connecting a plurality of Transistors in series or connected in parallel to generate a Sensing Detection Voltage characteristic of a predetermined value different from the S_1 signal input Transistor 706. It is characterized in that it is different from the S_1 signal input transistor 706 in the current driving capability. Electric arc (ARC) accidents occur due to damage to wires or electrical products, insulation breakdown or improper installation of wires, connection defects, and aging. About 80% of ...

All fault-current sensitive protection device

本发明涉及交直流敏感故障电流保护装置，具有用于交流故障电流和脉动的直流故障电流的独立于电网电压的第一传感器装置(1)，用于平滑的直流故障电流、交流故障电流和脉动的直流故障电流的依赖于电网电压的第二传感器装置(2)和总电流变换器(8)。该第一传感器装置(1)和第二传感器装置(2)并联地连接到触发装置(6)的控制导线(4)，总电流变换器的绕组(10)与第一传感器装置或第二传感器装置连接，并通过测量电阻(13)引至参考电位。优选去耦合装置(11)作为转换装置。该故障电流保护装置简化了结构，体积更小，满足对交流故障电流、脉动直流故障电流和平滑直流故障电流所要求的触发故障电流和触发时间边界值的相应规范。

Residual-current device

트립 장치 커넥터를 구비한 누전 차단기가 개시된다. 본 발명에 따르면, 트립 장치가 트립 장치 커넥터에 삽입되는 것만으로도 트립 장치와 트립 장치 커넥터의 결합이 가능하다. 따라서, 상기 결합 과정이 용이해지게 되어 트립 장치와 트립 장치 커넥터의 신속한 결합 및 분리가 가능하다.

All fault-current sensitive protection device

本发明涉及交直流敏感故障电流保护装置，具有用于交流故障电流和脉动的直流故障电流的独立于电网电压的第一传感器装置(1)，用于平滑的直流故障电流、交流故障电流和脉动的直流故障电流的依赖于电网电压的第二传感器装置(2)和总电流变换器(8)。该第一传感器装置(1)和第二传感器装置(2)并联地连接到触发装置(6)的控制导线(4)，总电流变换器的绕组(10)与第一传感器装置或第二传感器装置连接，并通过测量电阻(13)引至参考电位。优选去耦合装置(11)作为转换装置。该故障电流保护装置简化了结构，体积更小，满足对交流故障电流、脉动直流故障电流和平滑直流故障电流所要求的触发故障电流和触发时间边界值的相应规范。

Fast Switch

본 발명은 한류기의 구성품인 고속스위치에 관한 것으로, 보다 상세하게는 외부 커패시터의 방전 전류를 이용함으로써 사고전류의 크기에 관계없이 회로 차단동작의 일관성이 보장되도록 하는 고속스위치에 관한 것이다. 본 발명의 일 실시예에 따른 고속스위치는 주회로에 연결되어 주회로를 개폐시키는 진공인터럽터; 상기 진공인터럽터의 가동부에 결합되어 접압력을 제공하는 접압스프링; 상기 접압스프링에 연결되는 절연로드; 상기 절연로드의 하단에 연결되어 개폐 구동력을 제공하는 영구자석조작기; 상기 영구자석조작기의 코일부에 방전전류를 제공하는 제1커패시터; 상기 영구자석조작기의 하단에 연결되는 구동코일; 및 상기 구동코일에 방전전류를 제공하는 제2커패시터;를 포함하여 구성된다.

Distribution box with switch handles aligned in one direction

The present invention relates to a second type earth leakage breaker and a distribution box with a switch handle aligned in one direction using the same. The second earth leakage breaker includes a first connection terminal configured to connect a zero phase current transformer (ZCT) core to a ZCT trip circuit part and a power supply-side line, a second connection terminal configured to connect a load-side line, a trip switch formed between the ZCT core and the first connection terminal, and a ZCT trip circuit part power supply line wired between the ZCT core and the second connection terminal, wherein a contact handling direction of the switch is fixed to a first or second connection terminal side, by changing the wiring of the ZCT trip circuit part power supply line between the first connection terminal and the trip switch, the load-side line is connected to the first connection terminal side without changing the contact handling direction of the switch, and the power supply-side line is connected to the second connection terminal side. According to the present invention, by forming the second type earth leakage breaker having the switch handling direction the same as a first type earth leakage breaker and the distribution box with a switch handle aligned in one direction using the same, it is possible to provide a distribution box with a switch handle aligned in one direction that prevents a user from malfunctioning the handle of the earth leakage breaker.

Over current relay with leak-breaker

PURPOSE: An over-current relay integrated with a current leakage detector is provided to reduce the size of a distribution board by installing two components with different functions in a single case. CONSTITUTION: An over-current detection part(1) is equipped with an over-current detection coil. A current leakage detection part(2) is installed at the inside of a case at one side. The current leakage detection part is equipped with a current leakage detection coil. A detection circuit part(3) is combined with the top of the case. The detection circuit part is equipped inside with an over-current detection and current leakage detection circuit. [Reference numerals] (AA) Wire

Test circuit for electric leakage circuit breaker

The present invention relates to an earth leakage breaker. The objective of the present invention is to provide a test circuit of an earth leakage breaker, which does not require resistance for limiting a current and forced current consumption therefrom by pre-making and outputting a small current necessary for an image transformer by a current control type generation circuit unit. The test circuit of an earth leakage breaker comprises: a bipolar junction transistor which is connected to an image transformer in series between the image transformer and common power, varies an output current by a voltage difference between an emitter and a base, and alternately outputs a pulse output current of zero ampere or predetermined ampere so that a current of zero ampere can be supplied to the image transformer when the voltage difference between the emitter the base is zero, and that an output current of predetermined ampere can be supplied to the image transformer when the difference equals to a predetermined voltage; and a differential amplifier circuit unit which has an output terminal connected to the base of the bipolar junction transistor to output a pulse voltage signal of zero or predetermined potential to the base of the bipolar junction transistor.

Full-automatic electric shock safety equipment

一种全自动触电保安装置，包括触点，使该触点自动分离的装置，探测经该触点的对地电流的装置，对上述对地电流的频率进行鉴别的分析装置，在探测到上述对地电流的频率与电源频率不同后，即人体触电电流达到预定值时使上述触点自动分离，分析装置可包括放大器，电源频率滤波器，正、负半周触电动作信号产生装置，及或逻辑门。可在大变化漏电电流情况下探测出较低的触电电流，从而进行保护。还可装有漏电突变和漏电保护装置。

Input detecting circuit for earth-leakage protector with self-diagnosing function

一种用于具有自我诊断功能的漏电保护装置的输入检测电路，包含漏电模拟装置、漏电感应磁环和运算放大器，特点在于，还包含负反馈电路；所述的负反馈电路包含第一电阻、以及和所述第一电阻并联的第二电路组；所述的第二电路组包含串联的第二电阻和单向导通装置；所述的单向导通装置包含若干单向导通元件；本发明提供的一种用于具有自我诊断功能的漏电保护装置的输入检测电路，可以解决由于自我诊断功能的接地故障漏电保护装置中加入的单向检测用模拟漏电电流而产生的正反向漏电灵敏度不一致的问题，使该类自我诊断功能的GFCI漏电保护符合UL标准对于正反向漏电灵敏度的要求。

Device and method for protecting against leakage currents

用于防止漏电流的装置，所述装置要连接在第一电气连接(2)和第二电气连接(3)之间。所述装置包括：开关(5)，所述开关(5)被配置为至少部分地转移在所述第一电气连接中流动的电流并由所述第一电气连接的电压控制。

Circuit breake

본 고안은 전원트랜스의 접지측 인입선이 단선된 경우에도 감전이나 누전으로 인한 화재가 발생하지 않게 하는 전자식 누전차단기를 제공한다. The present invention provides an electronic earth leakage breaker that does not cause a fire due to electric shock or a short circuit even when the lead of the power supply ground is disconnected. 본 고안에 따른 전자식 누전차단기는, 반도체, 트랜지스터, 사이리스터 등 전자부품으로 구성된 전자회로를 상기 공지된 누전차단기에 추가시켜 결상시에는 지락보호가 불가능하였던 것을 가능하게 할 수 있도록 하는 것이다. The electronic circuit breaker according to the present invention is to add an electronic circuit composed of electronic components such as semiconductors, transistors, thyristors, etc. to the known circuit breaker to enable the ground fault protection was impossible at the time of imaging. 누전차단기, 접지, 인입선, 지락, 결상 Earth leakage breaker, grounding, lead wire, ground fault, phase open

Earth leakage breaker

본 발명은 제품 출하 후에 행하는 내전압 시험에도 대응될 수 있도록 간이한 구조로서, 공간 절약적인 내전압 테스트용 스위치를 장비한 누전 차단기를 제공하는 것을 목적으로 하며, 그것을 위한 수단으로서, 단일체의 케이스(11)에 과전류 보호 및 누전 보호 기능 부품을 조립한 누전 차단기에 있어서, 주회로의 상간 전압을 누전 검출 회로(7)에 급전하는 급전 회로를 온/오프하는 수동 조작식의 내전압 테스트용 스위치를 장비한 것으로서, 해당 스위치를 누전 검출 회로(7)의 프린트판(7a)에 부착하여 주회로 도체(1a)(영상 변류기(6)를 관통하는 1차 도체)에 직접 압접시키는 전원용 전극판(22)과, 해당 전극판과 주회로 도체와의 사이에 장착하여 수동 조작에 의해 전극판을 주회로 도체에 접촉 격리시키는 절연물제의 개폐 조작편(24)으로 구성하고, 개폐 조작편의 손잡이부(24a)를 차단기 케이스의 커버에 개구한 창구멍에 면하게 한다. 그리고, 내전압 시험을 실시할 때 손잡이부를 OFF 위치로 인출하여 누전 검출 회로를 주회로로부터 단로한다. 주회로, 주회로 도체, 개폐 기구부, 과전류 제거 장치, 영상 변류기