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装设低压保安器,是保障农村安全用电的一项有效措施,目前已在各地普遍推广。这里谈谈制做低压保安器应当注意的几个问题。1.动作电流、动作时间的选择
The installation of low-voltage security guards is an effective measure to ensure the safe use of electricity in rural areas and is now widely promoted around the country. Here to talk about the system of low-voltage security should pay attention to several issues. 1. Action current, the choice of action time