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三绕组变压器的零序保护是( )和保护区外单相接地故障的后备保护
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三绕组变压器的零序保护是( )和保护区外单相接地故障的后备保护
A、高压侧绕组
B、中压侧绕组;
C、低压侧绕组
D、区外相间故障的后备保护。
时间:2021-09-01 20:45
关键词:
联大
河南理工大学
电气工程及其自动化
供电技术
答案解析
D
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三绕组变压器的零序保护是( )和保护区外单相接地故障的后备保护
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