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高頻直流高壓發生器使用注意須知

更新時間:2023-09-04      瀏覽次數:342

采(cai)用(yong)中(zhong)高(gao)頻(pin)整流(liu)(liu)濾波(bo)(bo)技(ji)術,解決了普通中(zhong)低頻(pin)高(gao)壓發生(sheng)裝置波(bo)(bo)紋系數較大,波(bo)(bo)形不平穩的(de)缺點。該系列產(chan)品(pin)符合國家新(xin)頒布(bu)電(dian)(dian)(dian)(dian)力(li)(li)行業(ye)標準(zhun)ZBF24003-90《直(zhi)流(liu)(liu)高(gao)壓發生(sheng)器通用(yong)技(ji)術條(tiao)件(jian) DL/T 848.1—2004》的(de)要求(qiu),廣(guang)泛用(yong)于(yu)電(dian)(dian)(dian)(dian)氣設(she)備(bei)直(zhi)流(liu)(liu)耐壓試驗和泄漏(lou)電(dian)(dian)(dian)(dian)流(liu)(liu)試驗,并且(qie)特別設(she)置了測試氧(yang)化鋅避雷器1mA下的(de)電(dian)(dian)(dian)(dian)壓U1mA及(ji)0.75U1mA下的(de)泄漏(lou)電(dian)(dian)(dian)(dian)流(liu)(liu)功能。最新(xin)研究、設(she)計(ji)、制造的(de)新(xin)科技(ji)產(chan)品(pin),適用(yong)于(yu)電(dian)(dian)(dian)(dian)力(li)(li)部(bu)門、廠(chang)礦(kuang)企(qi)業(ye)動力(li)(li)部(bu)門、科研單位(wei)、鐵路、化工、發電(dian)(dian)(dian)(dian)廠(chang)等對氧(yang)化鋅避雷器、磁(ci)吹避雷器、電(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)纜、發電(dian)(dian)(dian)(dian)機(ji)、變壓器、開關等設(she)備(bei)進(jin)行直(zhi)流(liu)(liu)高(gao)壓試驗,是(shi)新(xin)世紀(ji)的(de)換代產(chan)品(pin)。

直(zhi)流(liu)高(gao)(gao)壓(ya)(ya)發生(sheng)器(qi)(qi)采(cai)用(yong)(yong)(yong)高(gao)(gao)頻(pin)倍壓(ya)(ya)電(dian)(dian)(dian)(dian)路,應用(yong)(yong)(yong)新的PWM高(gao)(gao)頻(pin)脈(mo)寬調制技(ji)術(shu),閉環(huan)調整,采(cai)用(yong)(yong)(yong)了電(dian)(dian)(dian)(dian)壓(ya)(ya)大(da)反(fan)饋,使電(dian)(dian)(dian)(dian)壓(ya)(ya)穩定(ding)度大(da)幅度提高(gao)(gao)。使用(yong)(yong)(yong)大(da)功率IGBT器(qi)(qi)件及其(qi)驅(qu)動技(ji)術(shu),并根據電(dian)(dian)(dian)(dian)磁(ci)兼(jian)容(rong)性理論(lun),采(cai)用(yong)(yong)(yong)特(te)殊屏蔽、隔離和接地等措(cuo)施。使高(gao)(gao)頻(pin)直(zhi)流(liu)高(gao)(gao)壓(ya)(ya)發生(sheng)器(qi)(qi)實現了高(gao)(gao)品(pin)質、便攜式(shi),并能承受(shou)額定(ding)電(dian)(dian)(dian)(dian)壓(ya)(ya)放電(dian)(dian)(dian)(dian)而不損環(huan)。

便攜式直流(liu)高壓發生器(qi)(qi)(qi)儀(yi)器(qi)(qi)(qi)主要部件選用美國、德(de)國、日本等國*技術(shu)的(de)元器(qi)(qi)(qi)件,使儀(yi)器(qi)(qi)(qi)更可靠(kao)、更穩定,倍壓筒體用德(de)國技術(shu)研制生產,高頻變壓器(qi)(qi)(qi)經有關專(zhuan)家特殊(shu)設計(ji)、體積小(xiao),容量(liang)大,過(guo)載能力強,便于(yu)現(xian)場(chang)作業試驗。

◇電源:AC 220V±10%,50Hz±1%

◇輸出電壓(ya)精(jing)度:<1%

◇輸出電流精度:<1%

◇紋波系(xi)數:≤0.5%

◇0.75倍輸出電壓精度:<1%,且可鎖存數據(ju)

◇系列產(chan)品輸出電(dian)壓(ya):60~400kV

◇系列產品輸出電(dian)流:2~10mA

高頻直流高壓發生器使用注意須知 

1、使(shi)用直流高壓(ya)發生(sheng)器(qi)的(de)工(gong)作人(ren)員,必(bi)須具(ju)有“高壓(ya)試驗(yan)上(shang)崗證"的(de)專業人(ren)員。

2、使用本儀(yi)器(qi)請用戶必(bi)須按(an)《電力安規》168條規定,并在工作電源進入試驗(yan)器(qi)前加裝(zhuang)兩個明顯斷開點。當更換試品和(he)接線時,應先將兩個電源斷開點明顯斷開。

3、試(shi)(shi)驗(yan)前請檢查(cha)所有試(shi)(shi)驗(yan)接線、控(kong)制箱、倍壓(ya)筒和試(shi)(shi)品的接地(di)線是否接好。試(shi)(shi)驗(yan)回路接地(di)線應按(an)本說明書(圖6)所示,一(yi)點接地(di)。

4、對(dui)大電容試(shi)(shi)(shi)(shi)品的放(fang)(fang)(fang)電應(ying)用F專用放(fang)(fang)(fang)電電阻棒對(dui)試(shi)(shi)(shi)(shi)品放(fang)(fang)(fang)電。放(fang)(fang)(fang)電時(shi)不能將(jiang)放(fang)(fang)(fang)電棒立即接觸試(shi)(shi)(shi)(shi)品,應(ying)先將(jiang)放(fang)(fang)(fang)電棒逐漸(jian)接近試(shi)(shi)(shi)(shi)品,到(dao)一定距離空氣(qi)間(jian)隙開始游(you)離放(fang)(fang)(fang)電,有嘶(si)嘶(si)聲(sheng),當無聲(sheng)音時(shi)可用放(fang)(fang)(fang)電棒放(fang)(fang)(fang)電,最后直接接上(shang)地線放(fang)(fang)(fang)電。

5、直流(liu)(liu)高壓200KV及以上時,盡管試(shi)(shi)驗人員穿絕緣鞋,且處(chu)在(zai)安全距(ju)離以處(chu)區域(yu),但由(you)于高壓直流(liu)(liu)離子空間(jian)電(dian)(dian)場分布擴印影響,會使(shi)幾個鄰近(jin)站立的人體(ti)(ti)上帶有(you)不(bu)(bu)同的直流(liu)(liu)電(dian)(dian)位。試(shi)(shi)驗人員不(bu)(bu)要互相握手(shou)或(huo)用(yong)手(shou)接觸接地(di)體(ti)(ti)等,否則會有(you)輕(qing)微(wei)電(dian)(dian)擊現象(xiang),此現象(xiang)在(zai)干燥(zao)地(di)區和冬季(ji)較為明顯,但由(you)于能量(liang)較小,一般不(bu)(bu)會對人體(ti)(ti)造成傷害。

6、高頻直(zhi)流高壓發(fa)生器的控制箱電(dian)(dian)源(yuan)(yuan)為交流AC220V±10%,50Hz。如(ru)果電(dian)(dian)源(yuan)(yuan)經(jing)1/1隔離變或(huo)現場用自發(fa)電(dian)(dian)源(yuan)(yuan),則必(bi)須人(ren)為將電(dian)(dian)源(yuan)(yuan)有一點與大(da)地聯接。


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