Short-circuit testing method of 3-phase-in-one-tank-type SF/sub 6/ gas circuit breaker

The dielectric performance of the circuit breaker between poles after current interruption was verified by testing. Test conditions based on IEC standards were examined. Based on these, a synthetic testing circuit with a voltage injection scheme was conceived. For both the 154 kV noneffective grounded system and the 300 kV effective grounded system, a practical testing method was realized.<
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