Circuit breaker and protective relay unit

Details Circuit breaker and protective relay unit Circuit breaker and protective relay unit

H - Electricity

02

H

348/23

H02H 3/00 (2006.01) H02H 3/093 (2006.01)

Patent

CA 1233229

CIRCUIT BREAKER AND PROTECTIVE RELAY UNIT ABSTRACT OF THE DISCLOSURE Circuit protection and protective relay functions provided by common circuit elements under the control of a single processor unit. Voltage and current values are obtained on a continuous basis and these values are continuously monitored within the processor to determine the electrical status of a protected power distribution system. Upon the occurrence of an over- current or undervoltage condition, the circuit is interrupted by operation of a circuit breaker trip solenoid causing the breaker contacts to open. When the overcurrent or undervoltage condition ceases to exist, the circuit breaker contacts could be closed by operation of a controlled relay. The ROM and RAM storage elements within the processor unit are continuously tested and the circuit breaker contacts are opened upon indication that the ROM or RAM element is non-functional.

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