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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柱上断路器选型

2014-10-27 9:41:22点击:

    柱上断路器即安装在电线杆等柱子上使用的断路器。柱上断路器多为高压断路器。

    按灭弧介质区分,经历了压缩空气型、磁吹型、产气材料型、多油型、SF6型、真空型等几个代表性的阶段。20世纪50年代的多油断路器,由于三相触头同室,其灭弧介质和绝缘介质均为绝缘油,开断容量在1250A以下,开断故障电流时存在爆炸危险,随着技术的发展,已逐渐被淘汰。SF6断路器和真空断路器是20世纪80年代发展起来的产品,20世纪90年代在我国得到广泛的应用,成为取代油断路器的主导产品。其开断电流在16kA及以上,开断短路电流次数多达30次,1020年免维护。同时已具有加装电动操作和控制器,实现智能化和配网自动化的功能。

   柱上断路器在操作方式上分为手动和自动,从工艺上,柱上断路器包括铁壳,铁壳带隔离,不锈钢壳,不锈钢带隔离。