概述：

揚州科拓電氣產品90KV超低頻高壓(ya)發生(sheng)器，采用分體式設計，先(xian)選擇超低頻是(shi)目前用戶zui明智選擇，他體積小，帶載能(neng)力(li)強等因素(su)。讀了下面參數，與串聯諧振(zhen)比較會讓您認(ren)識到(dao)超低頻發(fa)生器好處及比串聯諧振(zhen)體積更(geng)輕的(de)優(you)越性靈活性。

　超低頻系列產(chan)品及選用

1、命名說明

 ××—30/1.1

           額定(ding)負載電容量，單位μF    

              額定輸出(chu)峰值電壓(ya)，單位kV

           產品字母代號                

   ２、超(chao)低頻系列產品                         表1

3、根據被試對向選擇適當規(gui)格的(de)產品。

使用時，試品(pin)電容(rong)量(liang)不得超過儀(yi)器的額定電容(rong)量(liang)。試品(pin)電容(rong)量(liang)過小，會影響輸出(chu)波形。若小于(yu)0.05μF，儀器將(jiang)不能正常(chang)輸(shu)出,此(ci)時(shi)可并聯0.05 μF的電容(rong)器(qi)（由本(ben)公(gong)司(si)提供(gong)）輔助輸出。下(xia)面是些(xie)設(she)備(bei)的電容量，供(gong)用戶參(can)考(kao)。

不同發電機(ji)的單相對地電容量(liang)               表2

交聯聚乙烯絕緣(yuan)單芯電(dian)力電(dian)纜的(de)電(dian)容量(μF/km)     表(biao)3

４、試品電流的(de)估(gu)算(suan)方(fang)法：

　　　　計算公(gong)式(shi)：　Ｉ＝2πfCU

二(er)　超低頻絕緣耐壓(ya)試驗原理

    超(chao)低頻(pin)(pin)絕緣耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)實際上(shang)是(shi)(shi)工(gong)頻(pin)(pin)耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)的(de)(de)種替(ti)代方(fang)法(fa)(fa)。我(wo)們(men)知道，在對大(da)(da)型(xing)(xing)發(fa)電(dian)(dian)(dian)機(ji)、電(dian)(dian)(dian)纜(lan)等(deng)試(shi)(shi)(shi)(shi)品進行工(gong)頻(pin)(pin)耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)時，由于(yu)(yu)它們(men)的(de)(de)絕緣層呈現(xian)較(jiao)大(da)(da)的(de)(de)電(dian)(dian)(dian)容(rong)(rong)量，所以(yi)需要很大(da)(da)容(rong)(rong)量的(de)(de)試(shi)(shi)(shi)(shi)驗(yan)(yan)變壓(ya)器(qi)或諧振變壓(ya)器(qi)。這(zhe)(zhe)樣些巨(ju)大(da)(da)的(de)(de)設備，不但笨重，造價高(gao)，而且使用(yong)十分不便。為了(le)(le)解(jie)決(jue)這(zhe)(zhe)矛盾，電(dian)(dian)(dian)力(li)部(bu)門采(cai)用(yong)了(le)(le)降低試(shi)(shi)(shi)(shi)驗(yan)(yan)頻(pin)(pin)率，從而降低了(le)(le)試(shi)(shi)(shi)(shi)驗(yan)(yan)電(dian)(dian)(dian)源(yuan)的(de)(de)容(rong)(rong)量。從國(guo)內外多年的(de)(de)理(li)論(lun)(lun)和實踐證明，用(yong)0.1Hz超(chao)低頻(pin)(pin)耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)替(ti)代工(gong)頻(pin)(pin)耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)，不但能有同樣的(de)(de)等(deng)效性(xing)，而且設備的(de)(de)體積(ji)大(da)(da)為縮小，重量大(da)(da)為減(jian)輕 ，理(li)論(lun)(lun)上(shang)容(rong)(rong)量約為工(gong)頻(pin)(pin)的(de)(de)五(wu)百分之，且操作(zuo)簡單(dan)，與工(gong)頻(pin)(pin)試(shi)(shi)(shi)(shi)驗(yan)(yan)相(xiang)比(bi)優越性(xing)更(geng)多。這(zhe)(zhe)就(jiu)是(shi)(shi)為什么發(fa)達國(guo)家(jia)普遍采(cai)用(yong)這(zhe)(zhe)方(fang)法(fa)(fa)的(de)(de)原因。國(guo)家(jia)發(fa)改委(wei)已制定了(le)(le)《35kV及以(yi)下交聯聚(ju)乙(yi)烯絕緣電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜(lan)超(chao)低頻(pin)(pin)（0.1Hz）耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)方(fang)法(fa)(fa)》行業標準(zhun)。我(wo)國(guo)正在推廣(guang)這(zhe)(zhe)方(fang)法(fa)(fa)，本儀器(qi)是(shi)(shi)根據我(wo)國(guo)這(zhe)(zhe)需要研(yan)制而成的(de)(de)。可廣(guang)泛用(yong)于(yu)(yu)電(dian)(dian)(dian)纜(lan)、大(da)(da)型(xing)(xing)高(gao)壓(ya)旋轉電(dian)(dian)(dian)機(ji)的(de)(de)交流耐(nai)壓(ya)試(shi)(shi)(shi)(shi)驗(yan)(yan)之中。

三　產(chan)品(pin)簡介

本產(chan)品接合了現代(dai)數字(zi)變頻(pin)技術，采用(yong)(yong)微機(ji)控制，升壓(ya)、降壓(ya)、測量、保護*自(zi)動(dong)化。由于(yu)全電(dian)(dian)子化，所(suo)以(yi)體積小重(zhong)量輕、大(da)屏(ping)幕液晶(jing)顯示(shi)，清(qing)晰直觀、且(qie)能顯示(shi)輸出(chu)波形、打印試(shi)驗報告。設計指標*符合《電(dian)(dian)力設備(bei)測試(shi)儀器(qi)(qi)通(tong)用(yong)(yong)技術條件(jian)，第4部分：超(chao)低(di)頻(pin)高(gao)壓(ya)發生器(qi)(qi)通(tong)用(yong)(yong)技術條件(jian)》電(dian)(dian)力行業標準(zhun)，使用(yong)(yong)十(shi)分方便。現在國內(nei)外均(jun)采用(yong)(yong)機(ji)械式的辦法進(jin)行調制和解調產(chan)生超(chao)低(di)頻(pin)信號，所(suo)以(yi)存在正(zheng)弦(xian)波波形不(bu)標準(zhun)，測量誤差大(da)，高(gao)壓(ya)部分有火花(hua)放電(dian)(dian)，設備(bei)笨重(zhong)，而且(qie)正(zheng)弦(xian)波的二，四象限還需要大(da)功率高(gao)壓(ya)電(dian)(dian)阻進(jin)行放電(dian)(dian)整形，所(suo)以(yi)設備(bei)的整體功耗較大(da)。本產(chan)品均(jun)能克服(fu)這(zhe)樣些不(bu)足之處，并具(ju)有如下特(te)點(dian)：

1、額定(ding)電(dian)(dian)壓(ya)小于或等(deng)于50kV的(de)超低(di)頻(pin)采用(yong)(yong)單聯(lian)(lian)結(jie)構（臺升(sheng)壓(ya)器）；大于50kV的(de)超低(di)頻(pin)采用(yong)(yong)串聯(lian)(lian)結(jie)構（兩臺升(sheng)壓(ya)器串聯(lian)(lian)），使(shi)整體(ti)重量大大減輕(qing)，帶載能力增強，而且(qie)兩臺升(sheng)壓(ya)器可單獨作低(di)電(dian)(dian)壓(ya)等(deng)級(ji)的(de)超低(di)頻(pin)使(shi)用(yong)(yong)。

2、電(dian)流、電(dian)壓、波形數據(ju)均直接從高壓側采樣獲(huo)得，所(suo)以(yi)數據(ju)準(zhun)確。

3、具(ju)有過(guo)壓(ya)保(bao)護功能，當輸出超過(guo)所(suo)設定的(de)限壓(ya)值時，儀(yi)器將停機保(bao)護，動作(zuo)時間小于20ms。

4、具有(you)過流保(bao)護功能(neng)：設計為高(gao)低壓雙重(zhong)保(bao)護，高(gao)壓側可按設定值進行精(jing)確停機保護；低壓側的(de)電流超過(guo)額定電流時將進(jin)行停機保護，動作時間都(dou)小于20ms。

5、高壓輸出(chu)保護(hu)電阻(zu)設計在升壓體(ti)內(nei)，所以(yi)外面不需另接(jie)保護(hu)電阻(zu)。

　　6、由于采用了高低壓閉環負反饋控制電路，所以輸出無容升效應。

四　技術(shu)參數(shu)

1.輸出(chu)額(e)定電(dian)壓：參見表1

2.輸出頻率：0.1Hz、0.05Hz、0.02Hz

3.帶載能力(li)： 0.1Hz   zui大1.1μF

0.05Hz  zui大(da)2.2μF

0.02Hz  zui大5.5μF

4.測量精度：3%

5.電壓正，負(fu)峰(feng)值誤(wu)差：≤3％

6.電壓波形失(shi)真度：≤5％

7.使用條(tiao)件：戶內、戶外；溫度(du)：-10℃∽+40℃；濕度(du)：≤85％RH

8.電(dian)源保險管：參(can)見表1

9.電源：頻率50Hz，電壓220V±5%。

揚州科(ke)拓(tuo)電(dian)氣科(ke)技有限公司主要(yao)產品：

直(zhi)流電阻測試儀、直流高壓發生器、變(bian)(bian)頻(pin)串聯諧振試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)裝(zhuang)置(zhi)、調頻(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、無(wu)局放試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)、SF6微(wei)(wei)水儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、SF6氣體檢漏儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、SF6氣體純度(du)(du)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、SF6密(mi)度(du)(du)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)校(xiao)(xiao)驗(yan)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、密(mi)度(du)(du)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)校(xiao)(xiao)驗(yan)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜故障測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)變(bian)(bian)比組別測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、微(wei)(wei)機(ji)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)保(bao)護測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、高壓(ya)(ya)開關機(ji)械特(te)性(xing)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、絕(jue)緣(yuan)(yuan)油介電(dian)(dian)(dian)(dian)(dian)(dian)(dian)強度(du)(du)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)（大(da)屏幕(mu)絕(jue)緣(yuan)(yuan)油耐壓(ya)(ya)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)）、變(bian)(bian)頻(pin)抗干擾介質損耗測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、全自動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)(gan)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、回路電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)（接(jie)觸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)）、大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流發(fa)生(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)（升(sheng)流器(qi)(qi)(qi)(qi)(qi)(qi)）、接(jie)地電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、絕(jue)緣(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)（兆歐表）、氧(yang)化鋅避(bi)雷器(qi)(qi)(qi)(qi)(qi)(qi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、互感(gan)(gan)器(qi)(qi)(qi)(qi)(qi)(qi)特(te)性(xing)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、絕(jue)緣(yuan)(yuan)靴手套(tao)耐壓(ya)(ya)實驗(yan)裝(zhuang)置(zhi)、無(wu)線高壓(ya)(ya)核相儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)(li)安全工器(qi)(qi)(qi)(qi)(qi)(qi)具力(li)(li)學性(xing)能(neng)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)機(ji)（電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)力(li)(li)機(ji)）、變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)有載分接(jie)開關測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)容量特(te)性(xing)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)繞組變(bian)(bian)形測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)特(te)性(xing)綜合測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、雷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)計數器(qi)(qi)(qi)(qi)(qi)(qi)校(xiao)(xiao)驗(yan)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、真空度(du)(du)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、真空濾油機(ji)/超低頻(pin)高壓(ya)(ya)發(fa)生(sheng)器(qi)(qi)(qi)(qi)(qi)(qi)、太陽能(neng)光(guang)伏(fu)接(jie)線盒(he)測(ce)(ce)(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)(shi)儀(yi)(yi)(yi)(yi)(yi)(yi)(yi)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)熱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)、絕(jue)緣(yuan)(yuan)制品、滑(hua)線導軌橋(qiao)架、橡(xiang)膠套(tao)管、橡(xiang)膠板、防塵布袋等(deng)。