<bdo id="2fwpw"></bdo><noframes id="2fwpw"><delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><bdo id="2fwpw"></bdo><delect id="2fwpw"></delect><delect id="2fwpw"><bdo id="2fwpw"></bdo></delect><noframes id="2fwpw"><noframes id="2fwpw"><delect id="2fwpw"><delect id="2fwpw"></delect></delect><rt id="2fwpw"></rt><delect id="2fwpw"></delect><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo> <bdo id="2fwpw"><rt id="2fwpw"></rt></bdo><noframes id="2fwpw"><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo><delect id="2fwpw"><rt id="2fwpw"></rt></delect><rt id="2fwpw"><rt id="2fwpw"></rt></rt><bdo id="2fwpw"><bdo id="2fwpw"></bdo></bdo><rt id="2fwpw"></rt><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><delect id="2fwpw"><noframes id="2fwpw"><noframes id="2fwpw"> <delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><noframes id="2fwpw"><noframes id="2fwpw">
shadowfiends
級別: 探索解密
精華主題: 0
發(fā)帖數量: 12 個(gè)
工控威望: 135 點(diǎn)
下載積分: 625 分
在線(xiàn)時(shí)間: 118(小時(shí))
注冊時(shí)間: 2011-08-25
最后登錄: 2013-09-02
查看shadowfiends的 主題 / 回貼
樓主  發(fā)表于: 2012-03-29 16:19
打電話(huà)給變壓器廠(chǎng)商，廠(chǎng)商說(shuō)不能接地，客戶(hù)要求二次側接地，求指導
劉麗艷
級別: 探索解密
精華主題: 0
發(fā)帖數量: 18 個(gè)
工控威望: 120 點(diǎn)
下載積分: 2173 分
在線(xiàn)時(shí)間: 36(小時(shí))
注冊時(shí)間: 2011-03-24
最后登錄: 2019-07-26
查看劉麗艷的 主題 / 回貼
1樓  發(fā)表于: 2012-03-29 18:43
隔離變壓器二次接地還叫什么隔離變壓器
劉麗艷
級別: 探索解密
精華主題: 0
發(fā)帖數量: 18 個(gè)
工控威望: 120 點(diǎn)
下載積分: 2173 分
在線(xiàn)時(shí)間: 36(小時(shí))
注冊時(shí)間: 2011-03-24
最后登錄: 2019-07-26
查看劉麗艷的 主題 / 回貼
2樓  發(fā)表于: 2012-03-29 18:46
220變220或380變380,220隔離，就是為了抗干擾或為了安全，如果一次側接地了，二次側在接地多余，抗干擾失去效果

国产精品碰碰现在自|超碰香蕉人人网99精品|人妻无码一区二区19p|久久久噜噜噜久久中文字幕|亚洲va中文字幕无码
<bdo id="2fwpw"></bdo><noframes id="2fwpw"><delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><bdo id="2fwpw"></bdo><delect id="2fwpw"></delect><delect id="2fwpw"><bdo id="2fwpw"></bdo></delect><noframes id="2fwpw"><noframes id="2fwpw"><delect id="2fwpw"><delect id="2fwpw"></delect></delect><rt id="2fwpw"></rt><delect id="2fwpw"></delect><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo> <bdo id="2fwpw"><rt id="2fwpw"></rt></bdo><noframes id="2fwpw"><bdo id="2fwpw"></bdo><bdo id="2fwpw"></bdo><delect id="2fwpw"><rt id="2fwpw"></rt></delect><rt id="2fwpw"><rt id="2fwpw"></rt></rt><bdo id="2fwpw"><bdo id="2fwpw"></bdo></bdo><rt id="2fwpw"></rt><delect id="2fwpw"></delect><noframes id="2fwpw"><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><rt id="2fwpw"></rt><delect id="2fwpw"><noframes id="2fwpw"><noframes id="2fwpw"> <delect id="2fwpw"></delect><delect id="2fwpw"></delect><noframes id="2fwpw"><delect id="2fwpw"></delect><bdo id="2fwpw"></bdo><noframes id="2fwpw"><noframes id="2fwpw">