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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高压隔离开关在电网中的作用

2014-10-20 9:34:14点击:

 高压隔离开关是发电厂和变电站电气系统中重要的开关电器,需与高压断路器配套使用.高压隔离开关具有以下作用.

隔离电压:将电器设备与带电的电网隔离,以保证被隔离的电气设备有明显的断开点,能安全的进行检修。


倒换母线:在双母线指的电路中,利用隔离开关将设备或线路从一组母线切换到另一组母线上。


接通断开电路:按规定可接通和断开小电流电路,如:接通和断开电压互感器和避雷器电路;

  接通和断开电压为10KV,长10Km空载架空线路或电压10KV,长度5Km空载电缆线路。

  接通和断开电压10KV以下,容量315KVA以下,励磁电流2A以下的空载变压器。