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ZnO surge arresters

ZnO surge arresters

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Advances in High Voltage Engineering — Recommend this title to your library

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High voltage systems are often subject to transient overvoltages of internal or external origin. The resultant surges travel along the transmission line and can cause damage to unprotected terminal equipment. Corona losses and the earth return path can attenuate and distort the surges, but the magnitude of the surge may still exceed the insulation level of the equipment. Surge arresters provide a limitation of the overvoltage to a chosen protective level. The superiority of the recently developed zinc oxide (ZnO) material over earlier silicon carbide (SiC) renewed interest and boosted the use of surge arrester protection.

Inspec keywords: zinc compounds; arresters; power system transients; overvoltage; silicon compounds

Other keywords: corona losses; transient overvoltages; surge arresters; surge arrester protection; ZnO; SiC; high voltage systems; transmission line

Subjects: Protection apparatus

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