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US 2010/0165520 A1Published application
Method and Apparatus For Tripping Circuit Breaker
OwnerCraig B. Williamsinventor
Life of this patent
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Abstract
An apparatus for monitoring a circuit breaker includes an electronics unit, the electronics unit being configured to generate a re-occurring signal, and a self-test trip unit in signal communication with the electronics unit and being configured to receive the re-occurring signal and effect tripping of the circuit breaker.
Claims24
An apparatus for monitoring a circuit breaker comprising:
- an electronics unit, the electronics unit being configured to generate a re-occurring signal;
- and
- a self-test trip unit in signal communication with the electronics unit and being configured to receive the re-occurring signal and effect tripping of the circuit breaker.
A circuit breaker comprising:
- an interrupter configured to detect a predetermined electrical condition of circuit protected by the circuit breaker and cause a tripping of the circuit breaker upon detection of the predetermined electrical condition;
- an electronics unit, the electronics unit being configured to generate a signal;
- and
- a self-test trip unit being configured to receive the signal and effect tripping of the circuit breaker when a re-occurring pulse of the signal is not received within a predetermined time interval.
1 more element
A method for tripping a circuit breaker comprising:
- producing a pulse signal;
- receiving the pulse signal in a self-test trip unit of the circuit breaker;
- and
- tripping the circuit breaker if the pulse signal is not received within a predetermined time interval of a time out filter of the self-test trip unit.
1 more element
Dependencies are inferred from the claim text.