Assembly for the discharge of electric overvoltages

Details Assembly for the discharge of electric overvoltages Assembly for the discharge of electric overvoltages

1993-09-28

1995-01-17

DeBoer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361120, 361127, 337 28, 31323111, H02H 906

Patent

active

053830857

ABSTRACT:
As a known "back-up device" for a gas-filled over-voltage arrester, a voltage-dependent resistor (6) is arranged centrally in a housing with the over-voltage arrester (1). The varistor (6) can, in this connection, be sealed with a moisture-repelling substance and it is arranged concentrically to a connecting pin (5) of the over-voltage arrester. By means of an auxiliary electrode (8) of annular disk shape placed on the varistor (6), an air gap (13) from the connecting pin (5) can be formed. The varistor, after its response, can be short-circuited via this air gap.

REFERENCES:
patent: 4132915 (1979-01-01), Wilms
patent: 4237515 (1980-12-01), Pierce, Jr.
patent: 4237516 (1980-12-01), Pierce, Jr.
patent: 4587589 (1986-05-01), Marek
patent: 4707762 (1987-11-01), Yapoujian
patent: 4736269 (1988-04-01), Amein et al.
patent: 4908730 (1990-03-01), Westrom
patent: 4912592 (1990-03-01), Flindall et al.
patent: 4984125 (1991-01-01), Uwano
patent: 5012383 (1991-04-01), Seike et al.
patent: 5142434 (1992-08-01), Boy et al.

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