Electricity: measuring and testing – Electromechanical switching device – Circuit breaker
Patent
1996-08-02
1998-04-07
Karlsen, Ernest F.
Electricity: measuring and testing
Electromechanical switching device
Circuit breaker
324537, G01R 3132
Patent
active
057368619
ABSTRACT:
A circuit breaker tripper includes a first charging circuit for charging an RC shorting time control circuit. A relay is connected to a pair of probes that are connected to an active line which enables a charging of the RC shorting time control circuit. Activation of a switch causes a relay to apply a short circuit across the active line, thereby causing a tripping of the circuit breaker. At the same time, a discharge circuit is activated which causes the relay open the short circuit after a preset period. Since the circuit breaker tripper relies on enabling sufficient current flow through the circuit breaker to trip it, a test circuit is provided which enables operation of the tripper only if the branch circuit is within a safe operating range for the circuit breaker tripper.
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Keleher Paul A.
O'Neal, III Charles D.
Karlsen Ernest F.
Keleher Paul A.
Solis Jose M.
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