Apparatus for and method of ground fault detection

Details Apparatus for and method of ground fault detection Apparatus for and method of ground fault detection

2007-06-19

2007-06-19

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C361S045000, C361S046000, C361S093100, C361S093500, C324S601000, C324S074000, C324S130000

Reexamination Certificate

active

10753562

ABSTRACT:
A ground fault detection system is provided where one current sensor is used to calibrate a second sensor in order to provide automatic zeroing of the difference measurement. The calibration is done gradually in order to differentiate between sensor drift and a transition in current due to a differential fault.

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Search Report from co-pending European Application No. EP 04 25 0050 dated May 10, 2006.

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