安全电压为什么不能与大地连接且不能接地接零
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安全电压（或特低电压）并非都不能接地。
在GB 50054《低压配电设计规范》中，把特低电压系统分为三类：
SELV系统：在正常条件下不接地的系统；
PELV系统：在正常条件下接地的系统；
FELV系统。
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绛旓細12 銆佹帴鍦扮嚎: 鏄负浜嗗湪宸插仠鐢电殑璁惧鍜岀嚎璺笂鎰忓鍦板嚭鐜鐢靛帇鏃朵繚璇佸伐浣滀汉鍛樼殑閲嶈宸ュ叿銆傛寜閮ㄩ瑙勫畾,鎺ュ湴绾垮繀椤绘槸 25mm 2 浠ヤ笂瑁搁摐杞嚎鍒舵垚銆 13 銆佹爣绀虹墝: 鐢ㄦ潵璀﹀憡浜轰滑涓嶅緱鎺ヨ繎璁惧鍜屽甫鐢甸儴鍒,鎸囩ず涓哄伐浣滀汉鍛樺噯澶囩殑宸ヤ綔鍦扮偣,鎻愰啋閲囧彇瀹夊叏鎺柦,浠ュ強绂佹寰噺鏌愯澶囨垨鏌愭绾胯矾鍚堥椄閫氱數鐨勯氬憡绀虹墝銆傚彲鍒嗕负璀﹀憡绫汇...
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