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Electrical Technology Daily Question 2018.10.14

2018-10-14View Original

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Electric Power Safety Procedures Exam Paper (Substation Specialization): For equipment under maintenance and the circuit breakers (switches) and isolators (disconnectors) on the side where power may be supplied, the control power and closing power must be disconnected. The operation handles of the isolators (disconnectors) must be locked to prevent accidental power supply.

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