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overvoltage

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ZBHQ-30AD overvoltage protector tester


As a new type of overvoltage protection device in power system, three-phase combined overvoltage protector has been widely used in 35kV and below power system to limit lightning overvoltage, vacuum circuit breaker operating overvoltage and various transient overvoltage that may occur in power system, which can effectively protect the insulation of electric equipment such as motor, transformer, switch, capacitor, cable, bus and so on from damage, it can play a reliable role in limiting the overvoltage between phases and relative ground, which is not available in traditional lightning arresters.