220kV及以上变电所当高压电源波动较大,经常使所用母线电压偏移,超过()时,应采用有载调压所用变压器。A.±10%;B.±2.5%;C.±8%;...

作者: rantiku 人气: - 评论: 0
问题 220kV及以上变电所当高压电源波动较大,经常使所用母线电压偏移,超过()时,应采用有载调压所用变压器。
选项 A.±10%; B.±2.5%; C.±8%; D.±5%。
答案 D
解析

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