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wangfuwang
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樓主  發(fā)表于: 2014-01-06 15:12
近來(lái)做了個(gè)商場(chǎng)用電安裝工程，照明用電是日光燈，3*20W的燈盤(pán)（3*18W），每個(gè)回路有4個(gè)燈盤(pán)，有的5個(gè)燈盤(pán)，電感式鎮流器（帶起輝器的那種），測得5個(gè)燈盤(pán)電流是6.2安，4個(gè)燈盤(pán)有5.1安，單獨測一個(gè)燈盤(pán)也有0.9安，一個(gè)燈盤(pán)三支20W燈，加起來(lái)才60W，每個(gè)鎮流器再加10W，共加起來(lái)每個(gè)燈盤(pán)才90W，怎么會(huì )有這么大電流？電流表是準確的。
理論初學(xué)者
有需要才有進(jìn)步，俺不管啥都會(huì )滿(mǎn)足你！
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1樓  發(fā)表于: 2014-01-06 16:33
功率因數會(huì )那么低？你買(mǎi)的燈盤(pán)是啥質(zhì)量的��！不會(huì )是整流器耗電不對吧！

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