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circuit breaker electrical switchgear Leak Detection Siemens

The Most Important Tests For Medium Voltage Metal-Enclosed ...· Circuit breaker open: Connect HV lead to pole 1. Ground all other poles. Repeat for poles 2 through 6, in turn, with other poles grounded. Circuit breaker closed: Connect HV lead to pole 1 or 2, as convenient, with either pole of phase 2 and 3 grounded. Repeat …

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