Two pole ground fault circuit interrupter with improved rectifie

Details Two pole ground fault circuit interrupter with improved rectifie Two pole ground fault circuit interrupter with improved rectifie

1975-03-14

1977-03-29

Miller, J D

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 87, 361102, H02H 328

Patent

active

040151697

ABSTRACT:
The sensing and trip circuit electronics of a ground fault interrupter of the differential current transformer type is, in a two pole system, supplied with power from each of the line conductors through separate solenoid trip coils and zener diodes that together provide good transient suppression while the zener diodes together provide full wave rectification for the voltage supplied to the electronics.

REFERENCES:
patent: 2660717 (1953-11-01), Hood
patent: 3258646 (1966-06-01), Fowler
patent: 3555360 (1971-01-01), Lee et al.
patent: 3731148 (1973-05-01), Fournis
patent: 3737726 (1973-06-01), Tarchaiski
patent: 3787709 (1974-01-01), Coe
patent: 3852642 (1974-12-01), Engel et al.
patent: 3895263 (1975-07-01), Clark
"ABC's of Zener Diodes" by Turner, pp. 54-58, Scientific Library, 1974, Sams and Co.

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