Electrical overvoltage surge arrester with a long time...

Details Electrical overvoltage surge arrester with a long time... Electrical overvoltage surge arrester with a long time...

H - Electricity

02

H

317/23

H02H 9/06 (2006.01) H01T 1/16 (2006.01) H01T 15/00 (2006.01)

Patent

CA 1068775

ABSTRACT OF THE DISCLOSURE The arrester includes a valve section made up of high current-voltage characteristic exponent metal oxide varistor valve blocks having a relatively high capacitance and a series gap section made up of simple gap units, the gap section carrying less than about one fifth of the total arrester voltage during a discharge. The valve blocks of the valve section are each provided with a parallel-connected bleeder resistor to adjust the time constant of the valve section so that the faces of the valve blocks are returned to a common potential within a time interval of between one and about two milliseconds for allowing sufficient deionization of arc gases without degrading multiple lighting surge performance.

250836

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