配電箱價格剖(pou)析(Analyse)應包含(han)用電安全對策（指對于(yu)難題(ti)的解決方案)的網址內容

配電箱價格剖析(Analyse)應包含(han)用電安全對策（指對于難(nan)題的(de)解決(jue)方(fang)案(an))的(de)網址(zhi)內容

　　1. 用電安全(quan)技(ji)術性對(dui)(dui)策（指對(dui)(dui)于難題的解決方案)

　　(1)保護接地裝(zhuang)置

就(jiu)是指電(dian)(dian)(dian)氣(qi)(qi)設(she)備(bei)(equipment)不(bu)感(gan)應起電(dian)(dian)(dian)的(de)(de)(de)(de)金屬(shu)外殼(ke)(ke)與(yu)接地(di)(di)裝置中間靠譜的(de)(de)(de)(de)保(bao)(bao)護(hu)(hu)接地(di)(di)。它的(de)(de)(de)(de)作用(yong)是,當電(dian)(dian)(dian)氣(qi)(qi)設(she)備(bei)的(de)(de)(de)(de)金屬(shu)外殼(ke)(ke)感(gan)應起電(dian)(dian)(dian)時(shi),假如身(shen)(shen)(shen)體(ti)觸碰到機殼(ke)(ke),由于身(shen)(shen)(shen)體(ti)的(de)(de)(de)(de)電(dian)(dian)(dian)阻器遠遠地(di)(di)超(chao)過路(lu)面(mian)(mian)的(de)(de)(de)(de)摩擦阻力(li),大部分的(de)(de)(de)(de)電(dian)(dian)(dian)流量(liang)(Electron flow)經路(lu)面(mian)(mian),并根據(ju)身(shen)(shen)(shen)體(ti)電(dian)(dian)(dian)流量(liang)十分小。這(zhe)一(yi)(yi)情況下要是適度操縱（control)接地(di)(di)線電(dian)(dian)(dian)阻(一(yi)(yi)般(ban)不(bu)超(chao)出4Ω),能夠降(jiang)低(di)安全事故。殊不(bu)知，在TT供電(dian)(dian)(dian)系(xi)(xi)(xi)統(tong)(tong)(tong)中，這(zhe)類保(bao)(bao)護(hu)(hu)方法的(de)(de)(de)(de)機殼(ke)(ke)工作電(dian)(dian)(dian)壓對身(shen)(shen)(shen)體(ti)是非(fei)常風險的(de)(de)(de)(de)。那樣(yang)的(de)(de)(de)(de)保(bao)(bao)護(hu)(hu)只(zhi)適用(yong)建筑施工的(de)(de)(de)(de)供電(dian)(dian)(dian)系(xi)(xi)(xi)統(tong)(tong)(tong),TT按(an)照(zhao)此方法要求,保(bao)(bao)護(hu)(hu)接地(di)(di)線電(dian)(dian)(dian)阻不(bu)超(chao)4Ω。(TT供電(dian)(dian)(dian)系(xi)(xi)(xi)統(tong)(tong)(tong)就(jiu)是指立即(ji)(ji)接地(di)(di)裝置的(de)(de)(de)(de)金屬(shu)外殼(ke)(ke)的(de)(de)(de)(de)電(dian)(dian)(dian)氣(qi)(qi)設(she)備(bei)保(bao)(bao)護(hu)(hu)系(xi)(xi)(xi)統(tong)(tong)(tong)軟件(jian)，稱為保(bao)(bao)護(hu)(hu)接地(di)(di)系(xi)(xi)(xi)統(tong)(tong)(tong)，也稱TT系(xi)(xi)(xi)統(tong)(tong)(tong)軟件(jian)。首例標記T表(biao)達供電(dian)(dian)(dian)系(xi)(xi)(xi)統(tong)(tong)(tong)中性點的(de)(de)(de)(de)立即(ji)(ji)接地(di)(di)裝置。第二個標記T表(biao)達，不(bu)管系(xi)(xi)(xi)統(tong)(tong)(tong)軟件(jian)怎樣(yang)接地(di)(di)裝置，曝(pu)露于負荷機器設(she)備(bei)且未(wei)與(yu)帶電(dian)(dian)(dian)體(ti)聯(lian)接的(de)(de)(de)(de)金屬(shu)材(cai)料導電(dian)(dian)(dian)性一(yi)(yi)部分均立即(ji)(ji)與(yu)路(lu)面(mian)(mian)聯(lian)接。TT系(xi)(xi)(xi)統(tong)(tong)(tong)軟件(jian)中的(de)(de)(de)(de)全部路(lu)面(mian)(mian)載(zai)荷稱為保(bao)(bao)護(hu)(hu)路(lu)面(mian)(mian)。

　　(2)保護零聯接

在供(gong)(gong)電(dian)(dian)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)中性(xing)點立(li)(li)即(ji)接地裝(zhuang)置的(de)(de)底壓供(gong)(gong)電(dian)(dian)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)中，電(dian)(dian)氣(qi)設(she)備(equipment)的(de)(de)金(jin)屬(shu)外(wai)(wai)殼與供(gong)(gong)電(dian)(dian)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)中的(de)(de)零(ling)(ling)線或型零(ling)(ling)線立(li)(li)即(ji)聯(lian)接，稱(cheng)為(wei)保(bao)(bao)護(hu)零(ling)(ling)線聯(lian)接。它(ta)的(de)(de)功(gong)效(xiao)是(shi)當電(dian)(dian)氣(qi)設(she)備(equipment)的(de)(de)金(jin)屬(shu)外(wai)(wai)殼感應(ying)起電(dian)(dian)時,短(duan)路(lu)故障(zhang)(電(dian)(dian)流(liu)(liu)量(liang)(Electron flow)沒經(jing)大(da)(da)功(gong)率電(dian)(dian)器、立(li)(li)即(ji)連開(kai)(kai)(kai)關電(dian)(dian)源(yuan)兩方(fang)面)流(liu)(liu)過(guo)零(ling)(ling)線合(he)成一個(ge)(ge)閉(bi)合(he)電(dian)(dian)路(lu),使(shi)它(ta)變為(wei)一個(ge)(ge)單相電(dian)(dian)短(duan)路(lu)故障(zhang)問題,因(yin)為(wei)零(ling)(ling)線的(de)(de)特性(xing)阻抗(kang)不大(da)(da),因(yin)而,短(duan)路(lu)容量(liang)挺大(da)(da),一般超過(guo)額定電(dian)(dian)壓的(de)(de)好幾倍乃至大(da)(da)量(liang),這般大(da)(da)的(de)(de)單相電(dian)(dian)短(duan)路(lu)故障(zhang)將使(shi)保(bao)(bao)護(hu)設(she)備快速(su),斷開(kai)(kai)(kai)（劃開(kai)(kai)(kai)；斷開(kai)(kai)(kai))開(kai)(kai)(kai)關電(dian)(dian)源(yuan),保(bao)(bao)證生(sheng)命安全。其供(gong)(gong)電(dian)(dian)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)為(wei)零(ling)(ling)保(bao)(bao)護(hu)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)軟(ruan)(ruan)件，即(ji)TN系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)軟(ruan)(ruan)件。(TN供(gong)(gong)電(dian)(dian)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)是(shi)聯(lian)接電(dian)(dian)氣(qi)設(she)備(equipment)金(jin)屬(shu)外(wai)(wai)殼與工作中零(ling)(ling)線的(de)(de)保(bao)(bao)護(hu)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)軟(ruan)(ruan)件，稱(cheng)為(wei)零(ling)(ling)保(bao)(bao)護(hu)系(xi)(xi)(xi)(xi)統(tong)(tong)(tong)軟(ruan)(ruan)件，用TN表達(da)。)

不管保(bao)護零(ling)線是不是與工(gong)作中(zhong)零(ling)線分離，TN供(gong)電系(xi)統(tong)可(ke)分成TN -

　　C、TN -s和TN -c-s供電系統(tong)。

1) tn-c供電系(xi)統(tong)。它的(de)工作中線(xian)是零(ling)(ling)保(bao)護(hu)線(xian)的(de)二(er)倍。這類供電系(xi)統(tong)一般 稱為三相(xiang)四線(xian)制(zhi)。可(ke)是，假如三相(xiang)負載不(bu)均(jun)衡(heng)(heng)，則在(zai)零(ling)(ling)線(xian)上存(cun)有(you)不(bu)均(jun)衡(heng)(heng)電流(liu)量(Electron flow)，因(yin)而由保(bao)護(hu)線(xian)聯接的(de)電氣設(she)備(bei)(equipment)的(de)金屬外殼具備(bei)一定的(de)電位差(cha)。假如中性(xing)點(dian)斷掉，則保(bao)護(hu)零(ling)(ling)的(de)走電設(she)備(bei)的(de)機(ji)殼感應起電。因(yin)而，這類供電系(xi)統(tong)存(cun)有(you)一些(xie)不(bu)夠。

2) tn-s供(gong)電系統。這是零線(xian)(xian)N和保護線(xian)(xian)Pe的(de)(de)(de)工(gong)作中(zhong)。一個嚴苛分離的(de)(de)(de)供(gong)電系統在(zai)供(gong)電系統點，也稱為(wei)三(san)相五(wu)線(xian)(xian)制。它的(de)(de)(de)優(you)勢是在(zai)型保護路(lu)線(xian)(xian)上沒(mei)有電流(liu)量(Electron flow)，型保護路(lu)線(xian)(xian)是為(wei)消化(hua)吸收常(chang)見(jian)故障電流(liu)量，確保保護設備工(gong)作中(zhong)而設計方案(Design)的(de)(de)(de)。應當強調的(de)(de)(de)是PE線(xian)(xian)不是容許(xu)破裂（fracture)的(de)(de)(de)。開關電源端應不斷(duan)接(jie)地(di)裝(zhuang)置(zhi)PE線(xian)(xian)。

3) tn-c-s供(gong)電系(xi)統。外的(de)(de)施(shi)工(gong)工(gong)地假如(ru)和企(qi)業(ye)同用(yong)一(yi)個直流變(bian)壓器(qi)（標(biao)準氣壓自變(bian)量)器(qi)(Transformer)或變(bian)電器(qi)中性點不(bu)挑出來施(shi)工(gong)工(gong)地PE線,三相四線制開關電源,施(shi)工(gong)工(gong)地務必應用(yong)專線運輸,體育文化能(neng)夠在施(shi)工(gong)工(gong)地總(zong)零箱干了非常(chang)的(de)(de)PE線反復（repeat)接(jie)地裝置后,這類系(xi)統軟件稱(cheng)為TN - C - S供(gong)電系(xi)統。