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

功率方向时间继电器电寿命要求有哪些

2014/7/21 9:46:57点击:
功率方向时间继电器电寿命要求有哪些?

  【解答】1、继电器触点应能接通和分断电压不大于250V,电流不大于1A的直流有感负荷(时间常数为5ms)的电路,分断功率为10W.

  2、在试验过程中,不允许触摸触点,试验的速度应考虑触点上无有害的热积累或离子积累,一般按不大于1次/s进行。

  3、电寿命过程中,继电器的可动系统每次均应可靠动作与返回,触点每次均应可靠接通与分断(触点间应无稳定电弧产生),即继电器在电寿命试验中应有百分之百的可靠性。试验结束后对第2.4~2.12和2.16条的规定,其误差允许增加值,由产品技术条件规定,绝缘耐压试验值,允许降至规定值的75%.

  以上内容均根据学员实际工作中遇到的问题整理而成,供参考,如有问题请及时沟通、指正.