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English Translations » 电气工程圈 » 【Electrical Version】Daily Question 20180201

【Electrical Version】Daily Question 20180201

2018-02-02View Original

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When the line is powered off, operations must be carried out in the order of ( ), and the reverse order is used when restoring power. A. Circuit breaker, load-side isolator, busbar-side isolator ； B. Circuit breaker, busbar-side isolator, load-side isolator C. Load-side isolator, busbar-side isolator, circuit breaker ； D. Busbar-side isolator, load-side isolator, circuit breaker. Correct answer: A
Reply #22018-02-02
A. Circuit breaker, load-side isolator, busbar-side isolator；
Reply #32018-02-02
A. Circuit breaker, load-side isolator, busbar-side isolator；   
Reply #42018-02-03
When the line is powered off, operations must be carried out in the order specified in (C); the reverse order is applied when restoring power.
Reply #52018-02-03
A. Circuit breaker, load-side isolator, busbar-side isolator；
Reply #62018-02-03
When the line is powered off, operations must be carried out in the order specified in (A); the reverse order is applied when restoring power. A. Circuit breaker, load-side isolator, busbar-side isolator ；
Reply #72018-02-03
When the line is powered off, operations must be carried out in the order specified in (A); the reverse order is applied when restoring power. A. Circuit breaker, load-side isolator, busbar-side isolator ； B. Circuit breaker, busbar-side isolator, load-side isolator C. Load-side isolator, busbar-side isolator, circuit breaker ； D. Busbar-side isolator, load-side isolator, circuit breaker

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Translated at 2026-07-23 01:43:11

Original: https://bbs.hcbbs.com/thread-1920433-1-1.html

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