H - Electricity – 01 – T
Patent
H - Electricity
01
T
H01T 4/02 (2006.01) H01T 1/14 (2006.01)
Patent
CA 2104350
A gas-tube arrester includes an arrester body in which an inert gas is contained, and first and second electrodes face to each other separated by an insulator. An insulating, heat-resistant film is in contact with the first electrode and has an opening and a plurality of small holes, a metal plate layered on the insulating film has an opening communicating with the opening of the insulating film. A low-melting point metal plate layered on the metal plate to cover the openings has a melting point lower than a decomposition or softening temperature of the insulating film. A conductive leaf spring electrically connected to the second electrode and pressing the low-melting point metal plate toward the metal plate, so that, when a high voltage is applied between the first and second electrodes, an electrical discharge occurs between the first and second electrodes through the small holes of the insulating films, and on the other hand, if the low-melting point metal plate is fused with a heat of the arrester body, the fused metal will flow through the openings to electrically connect the leaf spring to the first electrode.
Cassan Maclean
Shinko Electric Industries Co. Ltd.
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