光(guang)伏(fu)配(pei)(pei)電(dian)(dian)(dian)箱農網改造柜(ju)JP國網標準JP型低壓配(pei)(pei)電(dian)(dian)(dian)無(wu)功(gong)補償綜合柜(ju)是一種(zhong)本著安全、經濟(ji)、合理、可靠的(de)(de)(de)原則而設計的(de)(de)(de)新型戶外(wai)配(pei)(pei)電(dian)(dian)(dian)無(wu)功(gong)補償綜合柜(ju)。要勤(qin)檢(jian)查ＪＰ柜(ju)內的(de)(de)(de)電(dian)(dian)(dian)氣設備，發現問題，及時(shi)排除。柜(ju)的(de)(de)(de)電(dian)(dian)(dian)源進線(xian)孔(kong)和出線(xian)孔(kong)一定要密封，以(yi)防(fang)老鼠、麻雀、蛇等小動物(wu)進去，造成柜(ju)內短路(lu)。柜(ju)的(de)(de)(de)柜(ju)門(men)一定要關(guan)嚴，防(fang)止雨水進入柜(ju)內造成電(dian)(dian)(dian)路(lu)，或絕緣擊(ji)穿對地(di)漏電(dian)(dian)(dian)。什么(me)是諧波？供電(dian)(dian)(dian)系(xi)統(tong)的(de)(de)(de)諧波是怎(zen)么(me)定義的(de)(de)(de)？電(dian)(dian)(dian)力系(xi)統(tong)中有非線(xian)性（時(shi)變或時(shi)不變）負載時(shi)，即使電(dian)(dian)(dian)源都以(yi)工頻50HZ供電(dian)(dian)(dian)。

光伏配電箱(xiang)農(nong)(nong)網改造柜(ju)(ju)JP國網標(biao)準(zhun)適用于城網、農(nong)(nong)網改造、工礦企(qi)業、路(lu)(lu)燈照明、住宅小區等交流50Hz、額定(ding)電壓380v的(de)配電系統中雖然供電線路(lu)(lu)沒有(you)故(gu)障(zhang)，但是負(fu)，荷(he)電流很大，達(da)到使(shi)，柜(ju)(ju)內的(de)空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)動作的(de)電流時(shi)，致使(shi)空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)跳閘(zha)。由于空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)容量(liang)(liang)小，使(shi)空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)觸(chu)頭發熱燒壞，甚(shen)至使(shi)，柜(ju)(ju)起火燒壞。而當小容量(liang)(liang)的(de)變(bian)壓器(qi)(qi)(qi)配的(de)，柜(ju)(ju)里，的(de)空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)容量(liang)(liang)很大時(shi)，即使(shi)供電線路(lu)(lu)上有(you)短路(lu)(lu)故(gu)障(zhang)，也(ye)不一(yi)定(ding)能達(da)到空(kong)氣(qi)(qi)(qi)斷(duan)(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)額定(ding)動作電流值，使(shi)變(bian)壓器(qi)(qi)(qi)失(shi)去保護。

光伏配(pei)電箱農網(wang)(wang)改造柜JP國(guo)網(wang)(wang)標準具有(you)電能(neng)分(fen)配(pei)、控(kong)制(zhi)(zhi)、保(bao)(bao)護、無功補償、電能(neng)計量(liang)等多功能(neng)的(de)信息戶(hu)外綜合(he)配(pei)電箱，同時(shi)可根(gen)據用(yong)戶(hu)要求加(jia)入漏(lou)電保(bao)(bao)護功能(neng)。諧(xie)(xie)波(bo)頻(pin)率與基波(bo)頻(pin)率的(de)比(bi)值，（n=fn/f 稱(cheng)為諧(xie)(xie)波(bo)。電網(wang)(wang)中有(you)時(shi)也存(cun)在非整(zheng)數(shu)倍諧(xie)(xie)波(bo)，稱(cheng)為非諧(xie)(xie)波(bo)（Non-harmonics）或分(fen)數(shu)諧(xie)(xie)波(bo)。諧(xie)(xie)波(bo)實際上是一(yi)種 干擾量(liang)，使(shi)電網(wang)(wang)受到(dao)“污(wu)染。電工(gong)技術領域主要研究諧(xie)(xie)波(bo)的(de)發生、傳(chuan)輸，測量(liang)、危害及抑(yi)制(zhi)(zhi)，其頻(pin)率范圍一(yi)般 為2≤n≤4Q:諧(xie)(xie)波(bo)有(you)什么危害？電網(wang)(wang)諧(xie)(xie)波(bo)造成電網(wang)(wang)污(wu)染。

光伏配電(dian)箱農網(wang)(wang)改造(zao)柜(ju)(ju)JP國(guo)網(wang)(wang)標準產品具有結構(gou)新穎、合(he)理(li)、防護等(deng)級高、安裝調試(shi)、維護及檢修方便等(deng)優點(dian)。產品符合(he)GB7251.1-1997、GB/T15576-2008，并通(tong)過(guo)了(le)3C認證，是(shi)目前電(dian)網(wang)(wang)改造(zao)中理(li)想的(de)低壓成(cheng)套裝置。JPWB柜(ju)(ju)進(jin)出線(xian)(xian)(xian)，選用(yong)(yong)銅心橡(xiang)皮(pi)線(xian)(xian)(xian)，穿PVC管。導線(xian)(xian)(xian)截面滿足大負荷，時答(da)應電(dian)流要求。為防止雨水進(jin)入，進(jin)出線(xian)(xian)(xian)上端(duan)PVC管裝90度彎頭，導線(xian)(xian)(xian)要有滴水彎點(dian)，每相用(yong)(yong)兩個并溝(gou)線(xian)(xian)(xian)夾與主導線(xian)(xian)(xian)相連。進(jin)出線(xian)(xian)(xian)下端(duan)要安裝線(xian)(xian)(xian)端(duan)子與設備(bei)接線(xian)(xian)(xian)端(duan)子相連，柜(ju)(ju)的(de)外殼要可靠接地。5JPWB型的(de)應用(yong)(yong)，目前315kVA及以下的(de)配變(bian)大都還是(shi)采用(yong)(yong)戶外型臺架式(shi)變(bian)臺供電(dian)。