Overvoltage protection device

Details Overvoltage protection device Overvoltage protection device

H - Electricity

02

H

317/13

H02H 3/46 (2006.01) H01T 4/08 (2006.01) H02H 9/00 (2006.01)

Patent

CA 1122267

ABSTRACT An overvoltage protection device for metal-encased, gas-insulated high-voltage lines as disclosed. The device includes a low pass filter which comprises an inductance connected in series with the inner conductor of the high voltage line, and a capacitance connected between the inner conductor and the grounded casing. The inductance and capacitance form the low-pass filter which serves as a trap for high-frequency traveling waves. The invention is especially suited for protection of metal-encased and gas-insulated high-voltage lines and installations in conjunction with a conventional overvoltage arrester.

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