Power terminal protection device

Details Power terminal protection device Power terminal protection device

1990-10-09

1994-07-05

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, 361118, 361816, H02H 720

Patent

active

053273168

ABSTRACT:
Metal oxide varistors are connected in parallel with grounded capacitors to oad outlet terminals coupled to a power source through inductor coils forming a low pass filter with the capacitors to delay propagation of a voltage increasing transient pulse to the power source until ground shunting paths of low resistance are developed in the varistors. Electromagnetic shielding partitions the inductor from the capacitors and varistors within a power outlet box mounting the load outlet terminals to prevent interference with absorption of transient energy by the varistors during the delay in establishing the ground shunting paths.

REFERENCES:
patent: 3683234 (1972-08-01), Rodewald
patent: 4259705 (1981-03-01), Stifter
patent: 4539610 (1985-09-01), Delaney et al.
patent: 4587588 (1986-05-01), Goldstein
patent: 4669027 (1987-05-01), Elsner et al.
patent: 4703386 (1987-10-01), Speet et al.

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