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

HY5WD电机用

更新:2013-9-26 12:41:24      点击:
  • 产品品牌   
  • 产品型号   HY5WD
  • 产品描述

    HY5WD电机用,是上海人民电气有限公司 http://www.shamandq.com 为您提供的关于HY5WD电机用型号,HY5WD电机用价格,有关HY5WD电机用的相关资料,上海人民电气有限公司...

产品介绍
避雷器是电力系统各类电气设备(变压器、电抗器、发电机、电动机、PT、CT、断路器、接触器等)绝缘配合的基础,由避雷器的保护性能确定电力系统所有电气设备的内外绝缘指标(短时工频耐压、雷电冲击耐压和操作冲击耐压等)。
??? 金属氧化物避雷器是20世纪八十年代由美、日等国开始在国际上普及推广的新一代避雷器,是常规避雷器中最先进的产品。我国八十年代中期全面引进该项技术后,通过多年实践消化,目前各专业避雷器厂产品性能与美、日、西欧等国的最先进产品差距并不大,真正达到了国际全部要求的产品也可以满足国际IEC标准的全部要求。

??? 该产品的核心工作元件采用以氧化锌为主的多元素金属氧化物粉末烧制,具有优异的非线性伏-安特性,陡波响应快,通流容量大。有间隙产品采用自吹间隙,带均压照射结构,降低了放电的分散性,冲击系数小。
??? 复合绝缘外套的采用,顺应了国际电力产品小型化、安全化、免维护的发展趋势。高分子有机复合材料与传统的陶瓷和玻璃等无机材料相比,具有体积小、重量轻、耐污秽免清扫、防爆防震动的优点。是集成化、模块化的中高压输变电成套设备中首选的防雷元件。
用途及执行标准:
????本产品使用于交流220kV及以下发电、输电、变电、配电系统,用于将雷电和系统内部操作过压电的幅值限制到规定的水平,是整个系统绝缘配合的基础设备。同时,本产品不能用于限制谐振过电压,系统消谐需要采用其它方式。
??? 本产品型号按JB/T8459-1996《避雷器产品型号编制方法》规定进行编制,无间隙产品执行GB11032-2000《交流无间隙金属氧化物避雷器》标准;有间隙产品执行JB/T9672-2005《有串联间隙金属氧化物避雷器》标准。对以上标准中未明确定义的重要参数及配置方式,按DL/T620-1997《交流电气装置的过电压保护和绝缘配合》的要求修正执行。
更多产品