天气预报15天查询> 科技> 接触器工作原理

接触器工作原理

更新时间: 2021-01-09 19:45:01     

1、接触器的工作原理是当接触器线圈通电后,线圈电流会产生磁场,产生的磁场使静铁芯产生电磁吸力吸引动铁芯,并带动交流接触器点动作,常闭触点断开,常开触点闭合,两者是联动的。

2、接触器分为交流接触器(电压AC)和直流接触器(电压DC),它应用于电力、配电与用电场合。接触器广义上是指工业电中利用线圈流过电流产生磁场,使触头闭合,以达到控制负载的电器。

关键词: 接触 工作 原理

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-1642963/ | 耗时:0.2500 s | 内存:1.89 MB | 查询:5 | 缓存读取:4 写入:1 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1642963 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1642963 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1642963 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2886463,1177767,3232223,3386254,1833530,3148228,3445574,436166,1584822,712024,3259208,2200122,1619030,1200051,3452145,894175,2449871,1179806,1170042,1615878,1844617,965423,1120993,3224866,894898,595894,3371884,1489360,2955124,2709205) ORDER BY field (ArticleID,2886463,1177767,3232223,3386254,1833530,3148228,3445574,436166,1584822,712024,3259208,2200122,1619030,1200051,3452145,894175,2449871,1179806,1170042,1615878,1844617,965423,1120993,3224866,894898,595894,3371884,1489360,2955124,2709205)
SELECT ArticleID,Title FROM tbl_Articles where CategoryID=90015 ORDER BY ArticleID DESC LIMIT 20