配電箱價格剖(pou)析(xi)(Analyse)應(ying)包含用(yong)電安全對(dui)策（指對(dui)于難題的解決(jue)方案)的網址(zhi)內容

配(pei)電箱(xiang)價格(ge)剖析(Analyse)應包(bao)含(han)用電安全對策（指對于難題的(de)解決方(fang)案)的(de)網址內容

　　1. 用電安全技(ji)術性對(dui)策（指對(dui)于難題的解(jie)決(jue)方案)

　　(1)保(bao)護接地裝置(zhi)

就是(shi)指電(dian)氣設(she)備(equipment)不(bu)感應起(qi)電(dian)的金屬外殼(ke)與(yu)(yu)接(jie)(jie)(jie)地裝(zhuang)(zhuang)置中間靠譜的保護(hu)接(jie)(jie)(jie)地。它的作用是(shi),當電(dian)氣設(she)備的金屬外殼(ke)感應起(qi)電(dian)時,假如身(shen)體(ti)(ti)觸(chu)碰到機殼(ke),由于身(shen)體(ti)(ti)的電(dian)阻器(qi)(qi)遠(yuan)遠(yuan)地超(chao)過路(lu)(lu)(lu)(lu)面(mian)的摩(mo)擦阻力,大(da)部(bu)分的電(dian)流(liu)(liu)量(Electron flow)經路(lu)(lu)(lu)(lu)面(mian),并(bing)根據(ju)身(shen)體(ti)(ti)電(dian)流(liu)(liu)量十分小。這一情(qing)況下要(yao)是(shi)適(shi)度(du)操縱（control)接(jie)(jie)(jie)地線(xian)電(dian)阻(一般不(bu)超(chao)出4Ω),能(neng)夠降低安(an)全事故。殊不(bu)知，在TT供(gong)電(dian)系(xi)統(tong)(tong)中，這類(lei)保護(hu)方(fang)法的機殼(ke)工(gong)作電(dian)壓對身(shen)體(ti)(ti)是(shi)非(fei)常風(feng)險的。那樣的保護(hu)只(zhi)適(shi)用建(jian)筑施工(gong)的供(gong)電(dian)系(xi)統(tong)(tong),TT按照此方(fang)法要(yao)求,保護(hu)接(jie)(jie)(jie)地線(xian)電(dian)阻不(bu)超(chao)4Ω。(TT供(gong)電(dian)系(xi)統(tong)(tong)就是(shi)指立(li)即接(jie)(jie)(jie)地裝(zhuang)(zhuang)置的金屬外殼(ke)的電(dian)氣設(she)備保護(hu)系(xi)統(tong)(tong)軟(ruan)件，稱為(wei)保護(hu)接(jie)(jie)(jie)地系(xi)統(tong)(tong)，也稱TT系(xi)統(tong)(tong)軟(ruan)件。首(shou)例標記T表(biao)達(da)供(gong)電(dian)系(xi)統(tong)(tong)中性點的立(li)即接(jie)(jie)(jie)地裝(zhuang)(zhuang)置。第二個標記T表(biao)達(da)，不(bu)管系(xi)統(tong)(tong)軟(ruan)件怎(zen)樣接(jie)(jie)(jie)地裝(zhuang)(zhuang)置，曝露(lu)于負荷(he)機器(qi)(qi)設(she)備且未與(yu)(yu)帶電(dian)體(ti)(ti)聯(lian)接(jie)(jie)(jie)的金屬材料導電(dian)性一部(bu)分均立(li)即與(yu)(yu)路(lu)(lu)(lu)(lu)面(mian)聯(lian)接(jie)(jie)(jie)。TT系(xi)統(tong)(tong)軟(ruan)件中的全部(bu)路(lu)(lu)(lu)(lu)面(mian)載(zai)荷(he)稱為(wei)保護(hu)路(lu)(lu)(lu)(lu)面(mian)。

　　(2)保護零聯接

在供(gong)電(dian)系(xi)(xi)統(tong)(tong)(tong)中性點立(li)即接(jie)地裝置的(de)(de)(de)底壓供(gong)電(dian)系(xi)(xi)統(tong)(tong)(tong)中，電(dian)氣(qi)設(she)備(equipment)的(de)(de)(de)金屬(shu)外殼(ke)與供(gong)電(dian)系(xi)(xi)統(tong)(tong)(tong)中的(de)(de)(de)零線(xian)(xian)或型零線(xian)(xian)立(li)即聯接(jie)，稱為(wei)保(bao)護零線(xian)(xian)聯接(jie)。它的(de)(de)(de)功(gong)效是(shi)當電(dian)氣(qi)設(she)備(equipment)的(de)(de)(de)金屬(shu)外殼(ke)感應起電(dian)時(shi),短路(lu)(lu)故(gu)障(電(dian)流量(Electron flow)沒經大功(gong)率電(dian)器、立(li)即連開(kai)關(guan)電(dian)源(yuan)兩方面)流過零線(xian)(xian)合成一個閉(bi)合電(dian)路(lu)(lu),使它變為(wei)一個單(dan)相電(dian)短路(lu)(lu)故(gu)障問題,因(yin)為(wei)零線(xian)(xian)的(de)(de)(de)特性阻抗(kang)不大,因(yin)而,短路(lu)(lu)容(rong)量挺(ting)大,一般超過額定電(dian)壓的(de)(de)(de)好幾倍乃至(zhi)大量,這(zhe)般大的(de)(de)(de)單(dan)相電(dian)短路(lu)(lu)故(gu)障將使保(bao)護設(she)備快速(su),斷開(kai)（劃開(kai)；斷開(kai))開(kai)關(guan)電(dian)源(yuan),保(bao)證(zheng)生命安全(quan)。其供(gong)電(dian)系(xi)(xi)統(tong)(tong)(tong)為(wei)零保(bao)護系(xi)(xi)統(tong)(tong)(tong)軟(ruan)件，即TN系(xi)(xi)統(tong)(tong)(tong)軟(ruan)件。(TN供(gong)電(dian)系(xi)(xi)統(tong)(tong)(tong)是(shi)聯接(jie)電(dian)氣(qi)設(she)備(equipment)金屬(shu)外殼(ke)與工作中零線(xian)(xian)的(de)(de)(de)保(bao)護系(xi)(xi)統(tong)(tong)(tong)軟(ruan)件，稱為(wei)零保(bao)護系(xi)(xi)統(tong)(tong)(tong)軟(ruan)件，用TN表(biao)達。)

不管保護零線是(shi)不是(shi)與工作中零線分離，TN供電系統可分成TN -

　　C、TN -s和(he)TN -c-s供電系統。

1) tn-c供電(dian)系統。它(ta)的(de)工作中線(xian)是零保(bao)護線(xian)的(de)二倍(bei)。這(zhe)類(lei)供電(dian)系統一般 稱為三(san)相四線(xian)制。可是，假(jia)如三(san)相負載(zai)不均衡(heng)(heng)，則在零線(xian)上存有不均衡(heng)(heng)電(dian)流量(Electron flow)，因而由保(bao)護線(xian)聯接的(de)電(dian)氣設備(bei)(equipment)的(de)金屬外殼具備(bei)一定的(de)電(dian)位差。假(jia)如中性(xing)點斷掉，則保(bao)護零的(de)走電(dian)設備(bei)的(de)機殼感應起電(dian)。因而，這(zhe)類(lei)供電(dian)系統存有一些不夠。

2) tn-s供(gong)電(dian)(dian)系統(tong)(tong)。這是(shi)零線(xian)(xian)N和(he)保(bao)護(hu)(hu)線(xian)(xian)Pe的工(gong)作(zuo)中(zhong)(zhong)。一個(ge)嚴苛分離(li)的供(gong)電(dian)(dian)系統(tong)(tong)在供(gong)電(dian)(dian)系統(tong)(tong)點，也(ye)稱(cheng)為(wei)三相(xiang)五(wu)線(xian)(xian)制。它的優勢是(shi)在型(xing)保(bao)護(hu)(hu)路線(xian)(xian)上沒有電(dian)(dian)流(liu)量(Electron flow)，型(xing)保(bao)護(hu)(hu)路線(xian)(xian)是(shi)為(wei)消化吸收常(chang)見故障(zhang)電(dian)(dian)流(liu)量，確(que)保(bao)保(bao)護(hu)(hu)設(she)備(bei)工(gong)作(zuo)中(zhong)(zhong)而設(she)計方案(Design)的。應當強(qiang)調的是(shi)PE線(xian)(xian)不是(shi)容(rong)許破(po)裂（fracture)的。開(kai)關電(dian)(dian)源端應不斷接地(di)裝(zhuang)置PE線(xian)(xian)。

3) tn-c-s供電系(xi)統(tong)。外(wai)的(de)施工(gong)(gong)(gong)工(gong)(gong)(gong)地假(jia)如和企業同用一個(ge)直流(liu)變(bian)(bian)壓器(qi)（標(biao)準氣壓自變(bian)(bian)量(liang))器(qi)(Transformer)或變(bian)(bian)電器(qi)中性點不挑出來施工(gong)(gong)(gong)工(gong)(gong)(gong)地PE線(xian)(xian),三相(xiang)四線(xian)(xian)制開(kai)關電源,施工(gong)(gong)(gong)工(gong)(gong)(gong)地務必應用專線(xian)(xian)運輸,體育文化能夠在施工(gong)(gong)(gong)工(gong)(gong)(gong)地總零箱(xiang)干了非常的(de)PE線(xian)(xian)反復（repeat)接(jie)地裝置后,這類系(xi)統(tong)軟件稱為TN - C - S供電系(xi)統(tong)。