发布时间:2025-01-21 04:58:23
一、单只电能表配电箱线路:在单只电能表配电箱中,电能表的接线方式如图1-1-1所示。电能表的1端应连接到进线的电源火线,2端经过控制开关(15A闸刀或空气开关)后再连接到用户负载的火线,3端应连接到进线的首尾零线,4端经过控制开关后连接到用户负载的零线。需要注意的是,负载的电流大小应与电能表的额定电流相匹配。
二、多只电能表配电箱线路:对于三只电能表的配电箱线路,接线方式如图1-1-2所示。电能表的连接方式与单只电能表的连线方式基本相同,即1与3端作为进线,2与4端作为出线,然后通过开关接入用户电路。
3m口罩9001v和9002v防护pm25方面具体有什么区别
2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23 2025-01-21 04:58:23