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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    高壓真空斷路器開關(guān)設(shè)備

    2014/1/3 8:20:18      點(diǎn)擊:
    高壓真空斷路器 開關(guān)設(shè)備介紹

    “開關(guān)柜”是一種電設(shè)備,外線先進(jìn)入柜內(nèi)主控開關(guān),然后進(jìn)入分控開關(guān),各分路按其需要設(shè)置。如儀表,自控,電動(dòng)機(jī)磁力開關(guān),各種交流接觸器等,有的還設(shè)高壓室與低壓室開關(guān)柜,設(shè)有高壓母線,如發(fā)電廠等,有的還設(shè)有為保主要設(shè)備的低周減載
    分類

    1、低壓抽出式開關(guān)柜
    2、交流低壓
    3、金屬鎧裝移開式開關(guān)柜
    4、低壓固定分隔式開關(guān)柜
    5、高壓電容器柜
    6、高壓開關(guān)柜
    7、中壓真空環(huán)網(wǎng)柜
    相關(guān)標(biāo)準(zhǔn)

    SJ/T 31401-1994|高壓開關(guān)柜完好要求和檢查評(píng)定方法
    DL/T 791-2001|戶內(nèi)交流充氣式開關(guān)柜選用導(dǎo)則
    DL 404-1991|戶內(nèi)交流高壓開關(guān)柜訂貨技術(shù)條件
    DL/T 404-1997|戶內(nèi)交流高壓開關(guān)柜訂貨技術(shù)條件
    DL/T 539-1993|戶內(nèi)交流高壓開關(guān)柜和元部件 凝露及污穢試驗(yàn)技術(shù)條件
    TB/T 2010-1987|27.5kV交流電氣化鐵道開關(guān)柜技術(shù)條件
    DL/T 404-2005|戶內(nèi)交流高壓開關(guān)柜訂貨技術(shù)條件
    維護(hù)

    對(duì)真空斷路器應(yīng)該每年進(jìn)行一次停電檢查維護(hù),以保證正常運(yùn)行。檢查應(yīng)做好如下方面的工作:
    a)對(duì)管子進(jìn)行斷口工頻耐壓試驗(yàn),測(cè)試真空度并記錄在冊(cè)。
    b)對(duì)絕緣件進(jìn)行工頻耐壓試驗(yàn)。
    c)測(cè)試斷路器的開距、接觸行程和機(jī)械特性,并記錄在冊(cè)。
    d)對(duì)各連接件的可調(diào)整處的連接螺栓、螺母等應(yīng)檢查是否有松動(dòng),特別是輔助開關(guān)拐臂處的連接小螺釘,真空管動(dòng)導(dǎo)電桿連接的鎖緊螺母等。
    e)對(duì)各轉(zhuǎn)動(dòng)關(guān)節(jié)處應(yīng)檢查各種卡簧,銷子等是否松脫;并對(duì)各轉(zhuǎn)動(dòng)、滑動(dòng)部分加潤(rùn)滑油膏。
    f)對(duì)使用在電流大于1 600 A以上的真空斷路器,應(yīng)對(duì)每極作直流電阻測(cè)試并記錄在冊(cè)。
    g)如需更換管子應(yīng)按產(chǎn)品說明書的要求進(jìn)行,更換后應(yīng)進(jìn)行機(jī)械特性的測(cè)試和耐壓試驗(yàn)。
    h)年檢后和投運(yùn)前應(yīng)連續(xù)空載操作8~10次,一切正常方可投運(yùn)。[3]
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