Add-on ground fault module

Details Add-on ground fault module Add-on ground fault module

1989-02-22

1990-01-30

Deboer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 47, 361 58, 361 95, 361 97, H02H 316

Patent

active

048977560

ABSTRACT:
An add on ground fault detection system including a module readily connected to the distribution line and to the associated circuit breaker, and including circuit means for sensing a metering signal while providing a low resistance burden to summing transformers, and providing a relay tripping signal if the metering signal is above a selected level.

REFERENCES:
patent: 3809962 (1974-05-01), Brown et al.
patent: 4258403 (1981-03-01), Shimp
patent: 4316229 (1982-02-01), Helwig
patent: 4380785 (1983-04-01), Demeyer et al.
patent: 4706155 (1987-11-01), Durivage et al.

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