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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同步检查继电器是怎样工作的

2013/12/21 16:27:13点击:
同步检查继电器是怎样工作的?
同步检测继电器的两组线圈是分别接在运转和起动同步电压小母线上的,当同步电压小母线上出现电压时,同步检测继电器即可工作。如果同步点两侧电压相角差超过同步检测继电器整定的动作角度时,继电器动作,常开触点打开,断开合闸脉冲回路,断路器就无法合闸。
只有当相角差小于整定角度时,常闭触点才会闭合,允许发出合闸脉冲。这样就防止了非同期合闸,起到了闭锁作用。