Testing loop impedance in an rccb electrical test circuit

Details Testing loop impedance in an rccb electrical test circuit Testing loop impedance in an rccb electrical test circuit

G - Physics

01

R

G01R 31/02 (2006.01) G01R 31/327 (2006.01)

Patent

CA 2556498

A method and apparatus for testing the loop impedance in residual current circuit breaker (RCCB) protected circuits is provided. An alternating test current is applied across the phase earth connections of a supply and a plurality of voltage samples are then taken across the connections. The voltage samples are subsequently transformed from time space to frequency space to allow the component due to the test current to be isolated. The loop impedance is then calculated.

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