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teng
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12樓  發(fā)表于: 2010-08-08 11:06
設備一次側線(xiàn)路中必須使用斷路器,或其它分斷開(kāi)關(guān),條件允許的可使用漏電保護開(kāi)關(guān).
yangjunhua
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13樓  發(fā)表于: 2010-08-09 20:40
短路保護用,也可做不頻繁操作的開(kāi)關(guān)使用
dgfshz
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14樓  發(fā)表于: 2010-08-12 01:15
斷路器主要起短路保護,漏電,過(guò)電流。斷路器在工業(yè)上使用時(shí)(380三相電),7.5千瓦以下可直接使用但不可頻繁操作當開(kāi)關(guān)使用,以上最好配接觸器熱繼電器使用,很大功率的要考慮(老)星角降壓(新)變頻器軟起器
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