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如何正确地选择电流互感器的变比?

问答题
2021-12-29 18:14
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正确答案

应按电流互感器长期最大的二次工作电流I2选择其一次额定电流I1n,并应尽可能使其工作在一次额定电流的60%左右,但不宜使互感器经常工作在额定一次电流的30%以下,否则应选用带S级的电流互感器,或减小变比。


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