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

        DZ20塑料外殼式斷路器

        2014/2/13 10:23:02      點(diǎn)擊:

        DZ20塑料外殼式斷路器1.表中所列規(guī)格用戶(hù)根據(jù)需要選取,但在一臺(tái)斷路器中不應(yīng)超過(guò)表中每格中所規(guī)定的項(xiàng)目。
        2.輔助觸頭400A及以上為二常開(kāi)二常閉,225A以下為一常開(kāi)一常閉。
        3.?dāng)嗦菲饔星冯妷好摽燮骱头謩?lì)脫扣器。其電壓規(guī)格交流有220V、380V,直流有110V、220V供四種。欠壓脫扣器電壓僅有交流規(guī)格。
        4.報(bào)警觸頭均為一常開(kāi)、一常閉觸頭;
        5.殼架等級(jí)100A、225A中無(wú)248、258、278、348、358、378的規(guī)格。
        *復(fù)式脫扣器——為帶瞬時(shí)脫扣器和熱脫扣器的脫扣器。
        DZ20塑殼斷路器是以Y型為基本產(chǎn)品,由絕緣外殼、操作機(jī)構(gòu)、觸頭系統(tǒng)和脫扣器四個(gè)部分組成。斷路器的操作機(jī)構(gòu)具有使觸頭快速合閘和分?jǐn)嗟墓δ,其“合”“分”“再扣”和“自由脫扣”位置以手柄位置?lái)區(qū)分。
        C型、J型和G型斷路器是在Y型基本產(chǎn)品基礎(chǔ)上派生設(shè)計(jì)而成(除C型160A外)。J型斷路器是將Y型斷路器的觸頭進(jìn)行結(jié)構(gòu)改進(jìn),使之在短路情況下,在機(jī)構(gòu)動(dòng)作之前,動(dòng)觸頭能迅速斥開(kāi),達(dá)到提高通斷能力的目的。
        G型斷路器是在Y型斷路器的底板后串聯(lián)的一個(gè)平行導(dǎo)體組成的斥力限流觸頭系統(tǒng),該系統(tǒng)比J型的斥力觸頭長(zhǎng),斷開(kāi)距離也大,因此能更迅速的限流。
        四級(jí)斷路器中性極(N)不裝脫扣元件,位于最右側(cè)位置。在分合過(guò)程中,中性極規(guī)定為閉合時(shí)較其他三級(jí)先接觸,分閘時(shí)較其他三級(jí)后斷開(kāi)。
        C型斷路器是為滿(mǎn)足630KVA及以下變壓器電網(wǎng)中的配電保護(hù)之需要,通過(guò)先用經(jīng)濟(jì)型材料的簡(jiǎn)化結(jié)構(gòu)及改進(jìn)工藝等辦法,能夠達(dá)到較好的經(jīng)濟(jì)效果。

        99热这里只有精品色综合,2018AV无码视频在线播放,国产美女一级a爱,久久人人超碰精品CAOPOREN 看国产精品美女黄片 日本熟妇牲交视频在线观看,国产在线播放99,国产一级无码视频,国产在线观看添荫蒂视频|www.tjnx.com.cn/ 日本熟妇牲交视频在线观看,国产在线播放99,国产一级无码视频,国产在线观看添荫蒂视频|www.zzshanglu.com http://www.tjnx.com.cn/ http://www.zzshanglu.com