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1. (WO2018203771) ARRESTER WITH PRESSURE CHAMBERS

Pub. No.:    WO/2018/203771    International Application No.:    PCT/RU2017/000294
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 06 01:59:59 CEST 2017
IPC: H01T 4/16
H02H 9/06
Applicants: STREAMER, ELECTRIC COMPANY INC.
АКЦИОНЕРНОЕ ОБЩЕСТВО "НПО "СТРИМЕР"
Inventors: PODPORKIN, Georgy Viktorovich
ПОДПОРКИН, Георгий Викторович
Title: ARRESTER WITH PRESSURE CHAMBERS
Abstract:
Proposed is an arrester for protecting elements of electrical equipment or an electric power line against the effects of lightning, comprising an insulating body made of a dielectric material, and five or more electrodes which are mechanically connected to the insulating body and which are arranged such as to allow electrical discharge to form between adjacent electrodes in the event of lightning overvoltage, wherein the electrodes are arranged inside the insulating body and are separated from the surface thereof by a layer of insulation. The adjacent electrodes extend into discharge chambers which have outlets onto the surface of the insulating body. At least some of the discharge chambers are provided with pressure chambers which are disposed around the electrodes and which are connected to the discharge chambers via the discharge gaps between adjacent electrodes. As a result of the invention, a discharge arc is extinguished after the passage of a lightning overvoltage impulse, before a follow current having an industrial frequency crosses zero, substantially immediately after the lightning overvoltage impulse.