如今，除了北京、天津、上海(hai)、杭州(zhou)等地(di)相繼出臺充(chong)電設(she)施(shi)建設(she)規劃之外，不(bu)少地(di)方政府(fu)還提出新建小區(qu)配套充(chong)電樁(zhuang)的(de)(de)(de)新思路，這不(bu)僅可緩(huan)解電動(dong)汽車使用者的(de)(de)(de)“里程焦慮”問(wen)題，更將大(da)幅、直接拉動(dong)充(chong)電樁(zhuang)生產企(qi)業的(de)(de)(de)銷量。充(chong)電樁(zhuang)作為(wei)新能源汽車產業鏈的(de)(de)(de)重要下游支柱行業，其市場(chang)化前景(jing)似乎相當樂觀(guan)。盡管行業前景(jing)被一致看(kan)好，但目前電動(dong)汽車市場(chang)的(de)(de)(de)發展并(bing)未(wei)完(wan)全(quan)成熟(shu)。標準、規劃和土地(di)三大(da)問(wen)題攔在充(chong)電樁(zhuang)建設(she)的(de)(de)(de)路前，成體系的(de)(de)(de)充(chong)電樁(zhuang)建設(she)并(bing)不(bu)一帆風順(shun)。

配電(dian)(dian)變(bian)壓(ya)器(qi)(qi)的(de)(de)低(di)(di)壓(ya)側(ce)(ce)總過流(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)斷器(qi)(qi)的(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)，應(ying)(ying)大(da)于配電(dian)(dian)變(bian)壓(ya)器(qi)(qi)的(de)(de)低(di)(di)壓(ya)側(ce)(ce)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)，一般取額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)的(de)(de)1.5倍，熔(rong)(rong)體(ti)(ti)的(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)應(ying)(ying)按變(bian)壓(ya)器(qi)(qi)允許的(de)(de)過負荷倍數(shu)和熔(rong)(rong)斷器(qi)(qi)特性確定(ding)。出線(xian)回路過流(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)斷器(qi)(qi)的(de)(de)熔(rong)(rong)體(ti)(ti)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)，不(bu)應(ying)(ying)大(da)于總過流(liu)(liu)(liu)保(bao)護(hu)熔(rong)(rong)斷器(qi)(qi)的(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)，熔(rong)(rong)體(ti)(ti)的(de)(de)額(e)定(ding)電(dian)(dian)流(liu)(liu)(liu)按回路正常最大(da)負荷電(dian)(dian)流(liu)(liu)(liu)選擇(ze)，并應(ying)(ying)躲過正常的(de)(de)尖峰(feng)電(dian)(dian)流(liu)(liu)(liu)。

在(zai)農網改造中(zhong)當時由于需求的配電箱數量大、施工期(qi)短，配電箱廠(chang)需要(yao)有關低(di)壓電器(qi)的供貨(huo)時間急(ji)且數量多，因而產(chan)生(sheng)了對產(chan)品質量的要(yao)求不嚴格的現象(xiang)，造成了一些產(chan)品投入(ru)運行(xing)后不久就(jiu)發生(sheng)故障(zhang)。如有些型號交流(liu)接觸器(qi)在(zai)配電箱投運后不久，就(jiu)因接觸器(qi)合閘(zha)線(xian)圈燒壞，而無法(fa)運行(xing)。

隨(sui)著電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子技(ji)(ji)術和(he)變流(liu)(liu)控制技(ji)(ji)術的(de)飛速發展，高精度可控變流(liu)(liu)技(ji)(ji)術的(de)成熟和(he)普及，分階(jie)段恒(heng)(heng)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)模式(shi)已(yi)經基本被充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)和(he)充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓連(lian)續(xu)變化的(de)恒(heng)(heng)壓限(xian)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)模式(shi)取代。主導充(chong)電(dian)(dian)(dian)(dian)(dian)工藝的(de)還是(shi)恒(heng)(heng)壓限(xian)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)模式(shi)。接觸式(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)的(de)最大問(wen)題(ti)在于它的(de)安全(quan)性和(he)通用(yong)性。為了(le)使它滿足(zu)嚴格的(de)安全(quan)充(chong)電(dian)(dian)(dian)(dian)(dian)標(biao)準，必須在電(dian)(dian)(dian)(dian)(dian)路上采用(yong)許多(duo)措施使充(chong)電(dian)(dian)(dian)(dian)(dian)設備能夠在各種環境(jing)下安全(quan)充(chong)電(dian)(dian)(dian)(dian)(dian)，恒(heng)(heng)壓限(xian)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)和(he)分階(jie)段恒(heng)(heng)流(liu)(liu)充(chong)電(dian)(dian)(dian)(dian)(dian)均屬于接觸式(shi)充(chong)電(dian)(dian)(dian)(dian)(dian)技(ji)(ji)術。新型(xing)的(de)電(dian)(dian)(dian)(dian)(dian)動(dong)汽車感應充(chong)電(dian)(dian)(dian)(dian)(dian)技(ji)(ji)術發展很快。

在一條距離比較長的線路上有多根小面積電纜往往會造成電纜使用浪費，宜良低壓開關柜哪家好于是在出線到用電負荷中，往往使用主干大電纜出線，專業低壓開關柜哪家好然后在接(jie)(jie)近負荷(he)的(de)時候，使用電(dian)(dian)纜分支箱將主(zhu)干(gan)電(dian)(dian)纜分成(cheng)若干(gan)小面積(ji)，電(dian)(dian)纜，由小面積(ji)電(dian)(dian)纜接(jie)(jie)入負荷(he)。這樣的(de)接(jie)(jie)線方(fang)式廣泛用于城(cheng)市(shi)電(dian)(dian)網中的(de)路燈等供電(dian)(dian)、小用戶(hu)供電(dian)(dian)。