Electrical transient surge protection

Details Electrical transient surge protection Electrical transient surge protection

1988-01-12

1990-02-13

Deboer, Todd E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361126, 361127, 361366, 361376, 338 21, H02H 904

Patent

active

049011871

ABSTRACT:
An adapter to be plugged in between a conventional watt-hour meter and an electrical power use installation socket to protect both the meter and downstream equipment from possible damage by transient surges in electrical potential resulting from lightning or similar disturbance. For the usual meter having a pair of power input terminals and a pair of power output terminals, this adapter has varistors or similar non-linear resistances connected between the input terminals and ground, to conduct away such surges. Preferably a plurality of such resistances are connected, in parallel, between each input terminal and ground, and a heat sink is connected to the grounded side of the varistors to dissipate the thermal energy resulting from the surge conduction.

REFERENCES:
patent: 2206232 (1952-05-01), St John
patent: 3601632 (1971-08-01), Frazier
patent: 3648166 (1972-05-01), Redecick
patent: 3894274 (1975-07-01), Rosenberg, Jr.
patent: 3914657 (1975-10-01), Melanson
patent: 3987343 (1976-10-01), Cunningham
patent: 4502089 (1985-02-01), Ozawa

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