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
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使用人民电气BS-60时间继电器注意事项

2020/7/22 13:24:30      点击:

注意事项:

4.1  延时越短的继电器越容易整定,实际准确度高,故建议优先选用。特别是采用0.3秒保护时间级差时,应选用延时范围不大于5秒的继电器。

4.2  做延时整定时,应注意两次通电动作之间,要留有一定的间隔时间,以确保整定值的准确度。

4.3  带有电流保持回路的继电器,使用时注意工作电压与自保持电流回路同极性 (电压、电流回路极性见图3端子接线图)。如果极性反,易将电流回路触点损坏。

4.4  继电器在工作过程中,应定期检查它的出口触点,若有烧毁,应检查开关辅助触点是否断开过慢。

4.5  长期工作制的产品,在安装运行和维护中应防止外附电阻及其连接导线接地