A test cabinet for Powell medium voltage metal-clad switchgear is for use by field operations or maintenance personnel. For troubleshooting procedures it is often necessary to test the circuit breaker after it has been removed from the switchgear assembly. Under most circumstances it is not possible while the circuit breaker is in service as the testing may well cause disruptions in the feeder power circuit and the associated processes.
A Powell Test Cabinet simply connects to the control umbilical plug of the circuit breaker. The test cabinet then allows full action of the circuit breaker for testing and verification purposes.