配(pei)(pei)電(dian)(dian)(dian)變壓(ya)(ya)器(qi)(qi)的(de)(de)(de)低(di)(di)壓(ya)(ya)側總過流(liu)保(bao)護熔(rong)(rong)斷器(qi)(qi)的(de)(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)，應(ying)大(da)于配(pei)(pei)電(dian)(dian)(dian)變壓(ya)(ya)器(qi)(qi)的(de)(de)(de)低(di)(di)壓(ya)(ya)側額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)，一般取額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)的(de)(de)(de)1.5倍(bei)，熔(rong)(rong)體的(de)(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)應(ying)按變壓(ya)(ya)器(qi)(qi)允許的(de)(de)(de)過負荷(he)倍(bei)數和熔(rong)(rong)斷器(qi)(qi)特性確定(ding)(ding)。出(chu)線回路過流(liu)保(bao)護熔(rong)(rong)斷器(qi)(qi)的(de)(de)(de)熔(rong)(rong)體額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)，不應(ying)大(da)于總過流(liu)保(bao)護熔(rong)(rong)斷器(qi)(qi)的(de)(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)，熔(rong)(rong)體的(de)(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流(liu)按回路正(zheng)常最(zui)大(da)負荷(he)電(dian)(dian)(dian)流(liu)選擇，并應(ying)躲過正(zheng)常的(de)(de)(de)尖峰(feng)電(dian)(dian)(dian)流(liu)。

這種復合材料生產戶外開閉所哪家好由兩部分組成:基體—聚酯類樹脂；增強材料（簡稱PC、SMC)，所以又稱其為透明PC材料、纖維增強的聚酯材料。透明PC材料、纖維增強型不飽和聚酯是一種以不飽和聚酯樹脂為基體的復合材料。這兩戶外開閉所哪家好種(zhong)材(cai)(cai)料(liao)(liao)(liao)具有(you)不(bu)溶、阻燃(ran)可回收特(te)點，后一種(zhong)材(cai)(cai)料(liao)(liao)(liao)具有(you)不(bu)熔不(bu)可回收利用弊(bi)端(duan)其物(wu)理(li)結(jie)構為(wei)三維(wei)(wei)網狀結(jie)構，這(zhe)四種(zhong)材(cai)(cai)料(liao)(liao)(liao)通過功能性(xing)(xing)填料(liao)(liao)(liao)改(gai)性(xing)(xing)及(ji)特(te)種(zhong)纖維(wei)(wei)的(de)增強已成為(wei)一種(zhong)高性(xing)(xing)能的(de)工程材(cai)(cai)料(liao)(liao)(liao)。

搬運材料、傳遞(di)工具(ju)、拆換部件、今天你(ni)(ni)去搶修到我來(lai)安裝、你(ni)(ni)累(lei)了(le)換我來(lai)。就這樣，一(yi)個(ge)接著一(yi)個(ge)的(de)(de)(de)配(pei)電(dian)箱在師傅們輪換著的(de)(de)(de)手掌下組裝了(le)起來(lai)。經過3天的(de)(de)(de)努力，所需更換的(de)(de)(de)配(pei)電(dian)箱已經全部組裝完畢(bi)，為本次更換配(pei)電(dian)箱工作做好(hao)了(le)前期(qi)準(zhun)備(bei)，大家的(de)(de)(de)臉上露(lu)出(chu)了(le)開心的(de)(de)(de)笑容。

充(chong)(chong)電樁(zhuang)(zhuang)（栓）能實(shi)現(xian)計(ji)時、計(ji)電度(du)、計(ji)金額充(chong)(chong)電，可以作為(wei)(wei)市(shi)民(min)購(gou)電終端。同時為(wei)(wei)提高公(gong)共充(chong)(chong)電樁(zhuang)(zhuang)（栓）的(de)效率和實(shi)用性，今(jin)后將陸續增加一(yi)樁(zhuang)(zhuang)（栓）多充(chong)(chong)和為(wei)(wei)電動自行車(che)充(chong)(chong)電的(de)功能。

1.主母(mu)線(xian)最大(da)額定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流:主母(mu)線(xian)最大(da)能(neng)夠(gou)(gou)承(cheng)載的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)額定(ding)(ding)(ding)值(zhi)(zhi)。2.額定(ding)(ding)(ding)短時(shi)(shi)耐(nai)受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)流:由(you)生產廠家(jia)(jia)給出的(de)(de),成(cheng)套(tao)設備(bei)中某條(tiao)電(dian)(dian)(dian)(dian)(dian)(dian)路在(zai)國(guo)家(jia)(jia)標準GB7251.1-2005中8.2.3規(gui)定(ding)(ding)(ding)的(de)(de)試驗條(tiao)件下(xia)能(neng)安全承(cheng)載的(de)(de)短時(shi)(shi)耐(nai)受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)流方(fang)(fang)均根(gen)值(zhi)(zhi)。3.峰值(zhi)(zhi)短時(shi)(shi)耐(nai)受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)流:在(zai)規(gui)定(ding)(ding)(ding)試驗條(tiao)件下(xia),生產廠家(jia)(jia)規(gui)定(ding)(ding)(ding)此電(dian)(dian)(dian)(dian)(dian)(dian)路能(neng)夠(gou)(gou)圓滿地承(cheng)受(shou)的(de)(de)峰值(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)流。4.外殼防(fang)護等(deng)級(ji):IEC60529-1989標準由(you)成(cheng)套(tao)設備(bei)提(ti)供的(de)(de)防(fang)止觸及(ji)帶電(dian)(dian)(dian)(dian)(dian)(dian)部件,以及(ji)外來固體的(de)(de)侵入和(he)液體的(de)(de)進入的(de)(de)等(deng)級(ji)。具體等(deng)級(ji)劃分詳見IEC60529標準。5.內部分隔(ge)方(fang)(fang)式:根(gen)據IEC60529-1989標準,為(wei)保護人身(shen)安全,將開關柜獨立劃分成(cheng)幾個隔(ge)室的(de)(de)不同方(fang)(fang)式。不同型(xing)號的(de)(de)配電(dian)(dian)(dian)(dian)(dian)(dian)柜之間(jian)的(de)(de)技(ji)術(shu)參數(shu)都有(you)很大(da)不同,而進口配電(dian)(dian)(dian)(dian)(dian)(dian)柜的(de)(de)技(ji)術(shu)參數(shu)基(ji)本都優于(yu)國(guo)產配電(dian)(dian)(dian)(dian)(dian)(dian)柜,但并不能(neng)認為(wei)進口配電(dian)(dian)(dian)(dian)(dian)(dian)柜就(jiu)一定(ding)(ding)(ding)比國(guo)產配電(dian)(dian)(dian)(dian)(dian)(dian)柜好(hao)。

在一條距離比較長的(de)線(xian)路上有多根小面積電(dian)纜(lan)往往會(hui)造成電(dian)纜(lan)使用浪費，于(yu)是在出線(xian)到用電(dian)負(fu)荷中，往往使用主(zhu)干大電(dian)纜(lan)出線(xian)，然后在接(jie)近(jin)負(fu)荷的(de)時候，使用電(dian)纜(lan)分支箱將主(zhu)干電(dian)纜(lan)分成若干小面積，電(dian)纜(lan)，由小面積電(dian)纜(lan)接(jie)入負(fu)荷。這樣的(de)接(jie)線(xian)方式廣泛用于(yu)城市(shi)電(dian)網(wang)中的(de)路燈等供(gong)電(dian)、小用戶供(gong)電(dian)。