Residual-current circuit breaker and a method for testing...

Details Residual-current circuit breaker and a method for testing... Residual-current circuit breaker and a method for testing...

2007-05-22

2007-05-22

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C361S044000

Reexamination Certificate

active

10130751

ABSTRACT:
A test circuit is provided, which is independent of a power supply and which enables a circuit breaker to be tested in a reliable manner. The test circuit includes a test coil which is devoid of electric potential and is wound around a totalizing current transformer. The test coil is preferably short circuited using a test switch and a connectable load. This simulates the occurrence of a residual current. The selection of an appropriate connectable load allows the sensitivity of the current circuit breaker to be tested in an advantageous manner.

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