Power supply device for motor protector and power supplying method thereof

The disclosure relates to a power supply device for a motor protector and a power supplying method thereof. The motor protector receives power. The power supply device comprises: a first power supplying unit, configured to receive and store the power and supply power to a tripping device of the motor protector; a second power supplying unit, configured to receive the power and supply power to a calculation and control device of the motor protector; a third power supplying unit, configured to receive and store the power and supply power to a reclosing device of the motor protector; and a control unit, configured to control an order in which the first power supplying unit, the second power supplying unit and the third power supplying unit receive the power.

COMMUNICATION DEVICE FOR AN ELECTRICAL SWITCHING UNIT

A communication device including an actuator driven by a control circuit, the communication device further including: 1. A low-power-consumption communication device for an electrical switching unit , said electrical switching unit comprising an actuator driven by a control circuit , the communication device comprising:a connector that can be connected to the control circuit, to receive a state signal sent by the control circuit and to receive an electrical power supply voltage supplied by the switching unit;a capacitor configured to be recharged from the power supply voltage received from the input connector when the state signal takes a predefined value;a bistable relay comprising a normally-open electrical contact connected to output terminals of the communication device to form a dry electrical contact; anda pulse generator supplied by the capacitor and being configured to excite the bistable relay and thus switch the electrical contact when the capacitor reaches a predefined level of charge.2. The communication device according to claim 1 , further comprising a current-limiting circuit connected between the input connector and the capacitor claim 1 , said current-limiting circuit being configured to supply the capacitor from the received electrical power supply voltage solely when the state signal takes the predefined value.3. The communication device according to claim 1 , wherein the relay comprises an additional electrical contact coupled to an output of the connector to send a signal indicating that the relay has changed state.4. The communication device according to claim 3 , wherein the additional electrical contact is biased by the voltage supplied by the capacitor.5. The communication device according to claim 3 , wherein the additional electrical contact is a normally-closed contact.6. The communication device according to claim 1 , wherein the electrical power supply voltage supplied by the switching unit is lower than or equal to 15 volts.7. The ...

Motor protector and method for operating the same

A motor protector and a method for operating the same. The motor protector includes: a power supply unit adapted to receive electric power from power supply lines of a motor to power the motor protector; a measuring unit adapted to measure electric parameters of the motor; and a controller configured to at least perform steps of: receiving from the measuring unit the electric parameters; determining, based on the electric parameters, whether the motor experiences a first failure related to overheating of the motor; enabling, in accordance with determination of the first failure of the motor, the power supply unit to power a closing mechanism of the motor protector after a predetermined time, thereby closing the closing mechanism to power the motor by the power supply lines; determining, based on the electric parameters, whether the motor experiences a second failure different from the first failure; and enabling, in accordance with determination of the second failure of the motor, the power supply unit to stop powering the closing mechanism. Hence, the motor protector can discriminate types of the motor failures and adopt corresponding measures for different failures.

Motor protector and method for operating the same

Embodiments of the present disclosure provide a motor protector and a method for operating the same. The motor protector comprises: a power supply unit adapted to receive electric power from power supply lines of a motor to power the motor protector; a measuring unit adapted to measure electric parameters of the motor; and a controller configured to at least perform steps of: receiving from the measuring unit the electric parameters; determining, based on the electric parameters, whether the motor experiences a first failure related to overheating of the motor; enabling, in accordance with determination of the first failure of the motor, the power supply unit to power a closing mechanism of the motor protector after a predetermined time, thereby closing the closing mechanism to power the motor by the power supply lines; determining, based on the electric parameters, whether the motor experiences a second failure different from the first failure; and enabling, in accordance with determination of the second failure of the motor, the power supply unit to stop powering the closing mechanism. Hence, the motor protector can discriminate types of the motor failures and adopt corresponding measures for different failures.

Communication device for an electrical switchgear

Dispositif de communication pour un appareil de commutation électrique Un dispositif de communication (2) comporte un actionneur piloté par un circuit de commande, le dispositif de communication (2) comporte : - un connecteur (4) apte à être raccordé au circuit de commande, pour recevoir un signal d’état (Ena) envoyé par le circuit de commande et pour recevoir une tension électrique d’alimentation (15V) fournie par l’appareil de commutation ; - un condensateur (10) configuré pour être rechargé à partir de la tension d’alimentation reçue depuis le connecteur d’entrée lorsque le signal d’état prend une valeur prédéfinie ; - un relais bistable (12) comportant un contact électrique (18) normalement ouvert (NO) connecté à des terminaux de sortie (20) pour former un contact électrique sec ; et - un générateur d’impulsions (8) alimenté par le condensateur et étant configuré pour exciter le relais bistable lorsque le condensateur atteint un niveau de charge prédéfini. Figure pour l'abrégé : Figure 1 Communication device for an electrical switching device A communication device (2) comprises an actuator controlled by a control circuit, the communication device (2) comprises: - a connector (4) able to be connected to the control circuit, to receive a status signal (Ena) sent by the control circuit and to receive an electrical supply voltage (15V) supplied by the switching device; - a capacitor (10) configured to be recharged from the supply voltage received from the input connector when the status signal takes a predefined value; - a bistable relay (12) comprising a normally open (NO) electrical contact (18) connected to output terminals (20) to form a dry electrical contact; and - a pulse generator (8) powered by the capacitor and being configured to energize the bistable relay when the capacitor reaches a predefined charge level. Figure for the abstract: Figure 1

Communication device for an electrical switching unit

A communication device for an electrical switching unit that includes an actuator driven by a control circuit. The communication device includes: a connector that can be connected to the control circuit, to receive a state signal sent by the control circuit and to receive an electrical power supply voltage supplied by the switching unit; a capacitor configured to be recharged from the power supply voltage received from the input connector when the state signal takes a predefined value; a bistable relay comprising a normally-open electrical contact connected to output terminals to form a dry electrical contact; and a pulse generator supplied by the capacitor and being configured to excite the bistable relay when the capacitor reaches a predefined level of charge.

Motor protector and method for operating the same

Driving apparatus for reclosing apparatus and driving method thereof

Dispositif de communication pour un appareil de commutation électrique

Aparato de accionamiento para aparatos de reconexión y procedimiento de accionamiento del mismo

La presente divulgación se refiere a un aparato de accionamiento para un aparato de reenganche y a un método de accionamiento del mismo. El aparato de accionamiento comprende una primera unidad de almacenamiento de energía, una unidad de temporización, una unidad de control y una primera unidad de suministro de energía, una segunda unidad de almacenamiento de energía y una unidad de accionamiento. La primera unidad de almacenamiento de energía recibe y almacena la energía, y suministra energía a la unidad de temporización y al aparato de reenganche; la unidad de temporización emite una primera señal de habilitación después de determinar que un tiempo de apagado del motor alcanza un primer umbral de tiempo basado en un voltaje de la primera unidad de almacenamiento de energía; la unidad de control emite una segunda señal de habilitación basada en una función de reenganche que está habilitada, y emite una tercera señal de habilitación basada en la determinación de que la función de reenganche no está habilitada; la primera unidad de suministro de energía permite que la segunda unidad de almacenamiento de energía reciba la energía cuando recibe la segunda señal de habilitación, y permite que la segunda unidad de almacenamiento de energía se descargue cuando recibe la tercera señal de habilitación; la segunda unidad de almacenamiento de energía recibe y almacena la energía a través de la primera unidad de suministro de energía; y la unidad de accionamiento proporciona la energía almacenada en la primera unidad de almacenamiento de energía al aparato de reenganche cuando se satisface una condición predeterminada. (Traducción automática con Google Translate, sin valor legal)