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current transformer high-voltage switchgears Recovery of Polluted factory-sell-directly

TOP 250+ Switchgear Interview Questions and Answers 17 ... zero method:-The arc is interrupted at current zero position that occurs100 times a second in case of 50Hz power system frequency in ac. Question 47. What Is Restriking Voltage? Answer : It is the transient voltage appearing across the breaker contacts at the instant of arc being extinguished. Question 48. What Is Meant By Recovery Voltage?

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