Adaptive ground and phase fault detection for a power distributi

Details Adaptive ground and phase fault detection for a power distributi Adaptive ground and phase fault detection for a power distributi

1996-09-25

1998-06-16

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 76, 364483, 364492, H02H 326

Patent

active

057680795

ABSTRACT:
An adaptive method and apparatus for detecting fault conditions in a power distribution system that services both single phase loads and three phase loads. The present invention accomplishes this by providing an adaptive ground fault detection method and an adaptive phase fault detection method. Both methods provide the capability to distinguish gradual changes in phase current, due to ordinary current fluctuations, from more substantial changes in phase current due to various fault conditions. By making this distinction, the present invention minimizes unnecessary service interruptions.

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