Assembly for the discharge of electric overvoltages

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

H - Electricity

01

H

H01H 83/10 (2006.01) H01T 1/16 (2006.01) H01T 4/10 (2006.01)

Patent

CA 2106898

ABSTRACT OF THE DISCLOSURE 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.

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