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zgf889
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樓主  發(fā)表于: 2012-02-22 08:47
如何選擇電流互感器？？例如一次線(xiàn)路為100A，該選用100/5還是150/5呢？？
祥林嫂
做工控人，不停地學(xué)習，不停地分享、交流。
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1樓  發(fā)表于: 2012-02-22 09:06
像咱們平時(shí)用首先考慮是精確度，這個(gè)對于測量有著(zhù)直接的影響，電流表多數是5A的，比如0.1級的100/5的就是說(shuō)在滿(mǎn)量程時(shí)候的誤差為±0.1%。其他的漂移、線(xiàn)性度和相移考慮的不多。
看樓主需求的要求了！一般情況100/5就可以這是指你的100A指的是斷路器，要是有效電流 就150/5的我認為。

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