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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人民电器与大家分享通用类交流真空接触器

2013/12/7 9:44:04      点击:

通用类交流真空接触器一般用于笼型感应电动机的起动、运转中分断(AC-3)和(或)笼型感应电动的起动、反接制动或反向运转、点动(AC-4),根据具体情况,也可以向下用于绕线式感应电动机的起动、分断(AC-2)和无感或微感负载、电阻炉(AC-1),但一般不推荐用于变压器的通断(AC-6a)和电容器组的通断(AC-6b),本公司另有用于此两类负载的专用真空接触器,请参见特殊用途接触器,欢迎洽询。
    真空接触器一般指定用于室内,通用的环境气候条件如下:
1 环境温度:周围空气温度最高不超过 + 40℃, 且在 24 小时的平均值不超过 + 35℃,周围空气温度最低不低于 -15℃。
2 海拔高度:安装地点的海拔高度,对于低压类开关元件和高压类开关元件中的低压元件不超过2000米,对于高压类开关元件不超过1000米。
3 相对湿度:大气的相对湿度在周围空气温度为 + 40℃时不超过 50%,在较低的温度下允许有较高的相对湿度,日平均不大于 95%,最湿月的平均温度为 + 20℃时,月平均最大相对湿度为 90%,已考虑因温度变化发生在产品表面的凝露。
4 工作环境:无雨雪侵袭、明火、爆炸危险、化学腐蚀及强烈振动的场合。
5 污染等级:III级,有导电性污染,或由于凝露使干燥的非导电性污染变为导电性。