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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QZB自耦变压器

2014-4-3 8:27:06      点击:

QZB自耦变压器降压起动自耦变压器|QZB起动自耦变压器,在自耦变压器降压起动的控制线路中,限制电动机起动电流
是依靠自耦变压器的降压作用来实现的。自耦变压器的初级和电源相接,自耦变压器的次级与电动机相联。
自耦变压器的次级一般有3个抽头,可得到3种数值不等的电压。使用时,可根据起动电流和起动转矩的要求
灵活选择。电动机起动时,定子绕组得到的电压是自耦变压器的二次电压,一旦起动完毕,自耦变压器便被
切除,电动机直接接至电源,即得到自耦变压器的一次电压,电动机进入全电压运行。通常称这种自耦变压
器为起动补偿器。这一线路的设计思想和串电阻起动线路基本相同,都是按时间原则来完成电动机起动过程
的。