Control circuit for resetting drawout circuit breaker uvr solenoid
Номер патента: CA1185348A
Опубликовано: 09-04-1985
Автор(ы): Ronald R. Russell
Принадлежит: General Electric Co
Опубликовано: 09-04-1985
Автор(ы): Ronald R. Russell
Принадлежит: General Electric Co
Реферат: CONTROL CIRCUIT FOR RESETTING DRAWOUT CIRCUIT BREAKER UVR SOLENOID ABSTRACT OF THE DISCLOSURE A control circuit utilizes a system voltage monitoring control relay for applying a DC control voltage across a UVR solenoid and a voltage dropping resistor to maintain the UVR in its reset condition in the absence of an under-voltage condition. An RC network maintains the UVR reset condition for momentary dips in the system voltage. If the UVR does drop out to trip its circuit breaker, a second relay temporarily switches out the dropping resistor to render the control voltage capable of electromagnetically resetting the UVR. To accommodate drawout breaker applications, means is provided to sense when the UVR is reconnected to the control circuit pursuant to automatically initiating a UVR reset function via the second relay.
Circuit breaker with improved single coil actuator and undervoltage release mechanism
Номер патента: CA1074375A. Автор: Walter W. Lang,Alan B. Shimp. Владелец: Westinghouse Electric Corp. Дата публикации: 1980-03-25.