Multi-pole ground fault circuit interrupter with grounded...

Details Multi-pole ground fault circuit interrupter with grounded... Multi-pole ground fault circuit interrupter with grounded...

H - Electricity

02

H

317/12

H02H 9/08 (2006.01) H02H 3/33 (2006.01)

Patent

CA 1065960

ABSTRACT OF THE DISCLOSURE A multi-pole system, such as a three wire system, with a grounded neutral transformer having a primary winding and a secondary winding which is the neutral conductor The primary winding has one end connected to each of the power conductors through individual current limiting resistors for grounded neutral protection when either one of the power conductors is energized and the other is not. The current limiting resistors are of markedly different magni- tude to provide a differential current to the grounded neu- tral transformer primary winding when both power conductors are energized.

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