Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following Londonfl jerseys supplyn Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of swomen nfl jerseystaying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yecheap nfl jerseys wholesales," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won http://govoriotkrito.bg/libs/nflcn08.htmthe globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.cheap nfl jerseys
新闻动态 News
搜索 Search
你的位置:首页 > 新闻动态 > 行业新闻

时间继电器接线方法

2014/1/13 15:02:16点击:
时间继电器接线方法
时间继电器的电气控制系统中是一个非常重要的元器件。一般分为通电
时间继电器(图7)

  时间继电器(图7)

延时和断电延时两种类型。 时间继电器从动作的原理上有电子式、机械式等。时间继电器电子式的是采用电容充放电再配合电子元件的原理来实现延时动作。时间继电器机械式的样式较多,有利用气囊、弹簧的气囊式。时间继电器的接线方法:
1、时间继电器控制接线:把它看成直流继电器来考虑;
2、时间继电器工作控制:虽然控制电压接上了,但是是否起控制作用,由面板上的计时器决定;
3、时间继电器功能理解:它就是一个开关,单刀双掷的,有一个活动点活动臂,就像常见的闸刀开关的活动刀臂一样;
4.时间继电器负载接线:电源的零线或负极接用电器的零线或负极端;
5、时间继电器工作原理:计时无效期间,相当于平常电灯开关断开状态。有效时,继电器动作,用电器得电工作,相当于平常电灯开关接通状态。