一、產品概述

電(dian)(dian)(dian)(dian)力系(xi)(xi)統(tong)(tong)中(zhong)的6kV、10kV、35kV電(dian)(dian)(dian)(dian)網中(zhong)一(yi)般都采用(yong)中(zhong)性(xing)(xing)點(dian)(dian)不(bu)接(jie)地的運行方式。電(dian)(dian)(dian)(dian)網中(zhong)主變壓器低壓側一(yi)般為三(san)角(jiao)形接(jie)法，沒有可以接(jie)地的中(zhong)性(xing)(xing)點(dian)(dian)。隨著城市電(dian)(dian)(dian)(dian)網的不(bu)斷(duan)擴大及電(dian)(dian)(dian)(dian)纜(lan)出線(xian)的不(bu)斷(duan)增多，系(xi)(xi)統(tong)(tong)對地電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)急劇增加(jia)，單相(xiang)接(jie)地后(hou)流(liu)(liu)(liu)(liu)經(jing)故障點(dian)(dian)的電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)較大（超過10A）。為了減(jian)小(xiao)單相(xiang)接(jie)地故障時的對地電(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，需要在(zai)變壓器中(zhong)性(xing)(xing)點(dian)(dian)裝設消弧線(xian)圈(quan)等補償裝置，因此(ci)需人為建立一(yi)個(ge)中(zhong)性(xing)(xing)點(dian)(dian)，以便在(zai)中(zhong)性(xing)(xing)點(dian)(dian)接(jie)入消弧線(xian)圈(quan)，減(jian)小(xiao)接(jie)地短路斷(duan)路電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)，提高系(xi)(xi)統(tong)(tong)供電(dian)(dian)(dian)(dian)可靠性(xing)(xing)。

另外，發(fa)(fa)(fa)電(dian)(dian)機(ji)在運行中，發(fa)(fa)(fa)生(sheng)單(dan)相接(jie)(jie)(jie)地(di)(di)(di)是(shi)做常見的故(gu)障，故(gu)障點(dian)出現電(dian)(dian)弧(hu)(hu)接(jie)(jie)(jie)地(di)(di)(di)時(shi)會進一步擴大定子(zi)繞(rao)組(zu)(zu)絕緣損害。發(fa)(fa)(fa)電(dian)(dian)機(ji)中性點(dian)經高電(dian)(dian)阻(zu)接(jie)(jie)(jie)地(di)(di)(di)能有效抑制發(fa)(fa)(fa)電(dian)(dian)機(ji)接(jie)(jie)(jie)地(di)(di)(di)故(gu)障電(dian)(dian)流(liu)，從而有效防止發(fa)(fa)(fa)電(dian)(dian)機(ji)定子(zi)繞(rao)組(zu)(zu)燒(shao)毀，降低電(dian)(dian)弧(hu)(hu)接(jie)(jie)(jie)地(di)(di)(di)暫態過電(dian)(dian)壓。為(wei)此，我公司針對電(dian)(dian)機(ji)單(dan)相接(jie)(jie)(jie)地(di)(di)(di)故(gu)障研發(fa)(fa)(fa)了電(dian)(dian)機(ji)中性點(dian)接(jie)(jie)(jie)地(di)(di)(di)電(dian)(dian)阻(zu)柜，主要由單(dan)相接(jie)(jie)(jie)地(di)(di)(di)變壓器(qi)與電(dian)(dian)阻(zu)器(qi)結(jie)合，可有效避免接(jie)(jie)(jie)地(di)(di)(di)電(dian)(dian)流(liu)對發(fa)(fa)(fa)電(dian)(dian)機(ji)定子(zi)繞(rao)組(zu)(zu)和(he)絕緣的損害。

二、產品特點

我公司(si)生產(chan)專(zhuan)業(ye)6kV級(ji)(ji)、10kV級(ji)(ji)、20kV級(ji)(ji)、35kV級(ji)(ji)接(jie)地(di)變(bian)壓(ya)器(qi)，有環氧澆(jiao)注干(gan)式(shi)和油浸(jin)式(shi)接(jie)地(di)變(bian)壓(ya)器(qi)，電機專(zhuan)用的單相(xiang)接(jie)地(di)變(bian)壓(ya)器(qi)。我公司(si)工(gong)程(cheng)師在接(jie)地(di)變(bian)壓(ya)器(qi)設計方面有多年(nian)的經驗，在產(chan)品(pin)外觀、性能和品(pin)質上面處于行(xing)業(ye)領先(xian)地(di)位。

1.鐵芯

采用優質冷軋取向硅鋼片,45°全斜(xie)接縫(feng),鐵軛用穿心(xin)螺桿夾緊(jin),心(xin)柱用玻璃纖(xian)維(wei)帶綁(bang)扎。鐵芯表面噴(pen)涂(tu)硅樹脂(zhi)膠,防潮、緊(jin)固并使噪聲降到(dao)最低。

2.繞組

內、外(wai)繞(rao)組(zu)均(jun)采(cai)用優(you)質銅(tong)導線繞(rao)制(zhi),用分段(duan)圓筒(tong)式結構(gou),增強層間絕緣，采(cai)用真空干燥工藝，成型后的繞(rao)組(zu)具有電(dian)氣性能好、機械強度高、局部(bu)放電(dian)量小等(deng)特點。

3.干式接(jie)(jie)地(di)變壓(ya)器(qi)用(yong)(yong)環氧樹脂不(bu)填(tian)充真空(kong)澆(jiao)注，相(xiang)比非包封產(chan)品具有較強的防(fang)煙(yan)霧、水露能(neng)力。油浸式接(jie)(jie)地(di)變壓(ya)器(qi)采用(yong)(yong)全(quan)密封結(jie)構(gou)，采用(yong)(yong)波紋片散熱取(qu)消儲油柜，油箱與(yu)箱沿(yan)用(yong)(yong)耐油膠條密封，避(bi)免變壓(ya)器(qi)油與(yu)空(kong)氣接(jie)(jie)觸，變壓(ya)器(qi)油不(bu)與(yu)空(kong)氣接(jie)(jie)觸，保(bao)證了產(chan)品絕緣性能(neng)和使用(yong)(yong)壽命。產(chan)品具有占地(di)面(mian)積小(xiao)，外形美觀，免維(wei)護特點。

4.保護裝置

油(you)(you)浸式接地(di)變壓(ya)器裝有(you)(you)壓(ya)力(li)釋放(fang)閥和瓦斯(si)繼(ji)電(dian)器，并(bing)配有(you)(you)油(you)(you)位計(ji)，方便隨時查看(kan)變壓(ya)器油(you)(you)位。干式接地(di)變壓(ya)器配有(you)(you)溫控裝置(zhi)，并(bing)有(you)(you)遠傳功能，方便隨時巡查產品運行溫度(du)。

三、執行標準

GB 1094.1-1996 電力變壓器第1部分 總(zong)則

GB 1094.2-1996 電力(li)變壓器第2部(bu)分 溫升

GB 1094.3-2003 電力(li)變壓器(qi)第3部分 絕(jue)緣水平絕(jue)緣試驗和外絕(jue)緣空氣間隙

GB 1094.5-2003 電力(li)變壓(ya)器 第5部分(fen) 承受短(duan)路的能力(li)

GB/T10229-1988 電抗器

四、型號說明

五、使用環境條件

1.海(hai)拔(ba)高度不超過(guo)1000米；

2.運行環境(jing)溫度-25℃至+45℃，相對(dui)濕(shi)度不超(chao)過90%；

3.周圍無(wu)有害氣體，無(wu)易(yi)燃易(yi)爆物品。

六、性能參數

額(e)定電(dian)壓：6kV、10kV、20kV、35kV

額定頻率：50Hz

絕(jue)緣(yuan)等級：A級或(huo)F級

絕緣(yuan)水(shui)平(ping)：Li60AC25、Li75AC35、Li125AC55、Li200AC85