產品簡介：江蘇直流發生器廠家/直流電纜耐壓測試儀

ZGF系列電纜耐壓測試儀是揚州豪泰公司充分吸取用戶的寶貴意見，潛心研究而推出的新一代產品。在保留了ZGFⅡ一些特點的基礎上，作了如下重大改進：①采用了電壓大反饋，因此輸出電壓穩定度得到大幅度提高，電壓漂移量極小；②大幅度提高了頻率，使紋波系數更小；③增設了高精度0.75UDC-1mA 功能按鈕，給氧化鋅避雷器測量帶來了極大的方便；

④高壓(ya)(ya)(ya)過壓(ya)(ya)(ya)整定(ding)采用數(shu)字撥(bo)盤開關，能將整定(ding)電壓(ya)(ya)(ya)值直觀顯示(shi)，并具有(you)較高的(de)整定(ding)精度；⑤輸出電壓(ya)(ya)(ya)調節(jie)(jie)采用單個多圈(quan)電位器(qi)，升壓(ya)(ya)(ya)過程(cheng)平穩，調節(jie)(jie)精度高，操作簡單；⑥與此同時，根據(ju)電磁(ci)兼容(rong)性(xing)理論，采用特(te)殊(shu)屏(ping)蔽、隔離和接地等(deng)措施從而保證試驗器(qi)能承(cheng)受額定(ding)電壓(ya)(ya)(ya)放電不(bu)損壞。

ZGF 系(xi)列采用了*的一體化機箱結構。使用時倍壓與控制(zhi)箱可(ke)分離，既(ji)方便攜帶，又安(an)全可(ke)靠。體積重量大為減(jian)少。

本試驗(yan)器廣(guang)泛適(shi)用于(yu)對氧化鋅避雷(lei)器、磁吹避雷(lei)器、電力電纜、發電機、變壓(ya)器、開關等設(she)備進行直流高壓(ya)試驗(yan)。

一、 ZGF系列主要技術性能：江蘇直流發生器廠家/直流電纜耐壓測試儀

對試(shi)品進(jin)行泄漏及直流耐壓試(shi)驗

⑴ 在做負載試(shi)驗前，將高壓(ya)屏(ping)蔽微(wei)安表(biao)安裝到(dao)倍壓(ya)筒上(shang)(shang)的(de)高壓(ya)輸出端上(shang)(shang)，并將配套的(de)專用高壓(ya)線(xian)分別接到(dao)微(wei)安表(biao)上(shang)(shang)和被試(shi)品上(shang)(shang)。

⑵ 檢查儀器、放**、倍壓(ya)筒、試(shi)品聯(lian)(lian)接(jie)線、接(jie)地線是(shi)否(fou)正(zheng)確，接(jie)地線聯(lian)(lian)接(jie)是(shi)否(fou)可靠，檢查高(gao)壓(ya)安全距離是(shi)否(fou)符合要求，方可開始(shi)進(jin)行試(shi)品的高(gao)壓(ya)試(shi)驗。

⑶ 檢(jian)查確(que)認儀器等無異常情況后，接(jie)通(tong)單相交流220V電源開關，此時綠燈亮，表(biao)示電源接(jie)通(tong)。可開始進行試品的(de)直流泄漏和直流耐壓試驗(yan)。

⑷ 按(an)紅(hong)色(se)按(an)鈕，則紅(hong)燈亮(liang)，表示高壓接通(tong)，待升高壓。

⑸ 順時針方向平緩調(diao)節調(diao)壓(ya)(ya)(ya)(ya)電(dian)(dian)位(wei)器(qi),輸(shu)出端即從零開(kai)始升(sheng)(sheng)壓(ya)(ya)(ya)(ya)。升(sheng)(sheng)壓(ya)(ya)(ya)(ya)速度以(yi)每秒(miao)3-5kV上升(sheng)(sheng)試驗電(dian)(dian)壓(ya)(ya)(ya)(ya)為(wei)宜。對(dui)于(yu)大電(dian)(dian)容試品升(sheng)(sheng)壓(ya)(ya)(ya)(ya)時則需要(yao)緩慢升(sheng)(sheng)壓(ya)(ya)(ya)(ya)，否則可能導致電(dian)(dian)壓(ya)(ya)(ya)(ya)過(guo)沖,還(huan)需監視電(dian)(dian)流表充電(dian)(dian)電(dian)(dian)流不超過(guo)直流發生(sheng)器(qi)的大充電(dian)(dian)電(dian)(dian)流。當(dang)升(sheng)(sheng)到所需的電(dian)(dian)壓(ya)(ya)(ya)(ya)或電(dian)(dian)流后(hou)，按規定時間(jian)記錄電(dian)(dian)流表及電(dian)(dian)壓(ya)(ya)(ya)(ya)表的讀數。

⑹ 試驗完畢后(hou)(hou)，降壓(ya)，將調壓(ya)電位器回(hui)零后(hou)(hou)，隨后(hou)(hou)按(an)綠色按(an)鈕，切(qie)斷高壓(ya)并關閉電源開(kai)關。

⑺ 試(shi)驗完畢(bi)后(hou)，應(ying)用對(dui)試(shi)品進行(xing)多(duo)次放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)，放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)后(hou)方(fang)可(ke)(ke)靠近試(shi)品和拆線工作 (放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)請詳細(xi)見(jian)放(fang)(fang)**使(shi)用說明書)。對(dui)小電(dian)(dian)(dian)(dian)(dian)(dian)容試(shi)品如(ru)氧化鋅(xin)避(bi)雷(lei)器(qi)(qi)、磁吹避(bi)雷(lei)器(qi)(qi)等緩(huan)緩(huan)調(diao)節(jie)調(diao)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)升壓(ya)(ya)到(dao)所需(xu)的電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(電(dian)(dian)(dian)(dian)(dian)(dian)流)值，然(ran)后(hou)從數顯表上(shang)讀(du)(du)出電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(電(dian)(dian)(dian)(dian)(dian)(dian)流)數值。如(ru)需(xu)對(dui)氧化鋅(xin)避(bi)雷(lei)器(qi)(qi)進行(xing)75%VDC-1mA的測量(liang)時，應(ying)先升到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)流到(dao)1000uA時電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值停止(這(zhe)時可(ke)(ke)記錄(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)流值)，然(ran)后(hou)按下黃(huang)色(se)按鈕(niu)(niu),電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)即降(jiang)到(dao)原來的75%,并保持此(ci)狀態。此(ci)時可(ke)(ke)讀(du)(du)取微安(an)表數值及電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)值。測量(liang)完畢(bi)后(hou),調(diao)壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)逆時針(zhen)回到(dao)零(ling)位(wei)(wei)(wei),按下綠(lv)色(se)按鈕(niu)(niu),需(xu)再次升壓(ya)(ya)時按紅色(se)按鈕(niu)(niu)即可(ke)(ke)。對(dui)大電(dian)(dian)(dian)(dian)(dian)(dian)容試(shi)品時，升壓(ya)(ya)應(ying)更(geng)要(yao)緩(huan)慢，并需(xu)要(yao)監視電(dian)(dian)(dian)(dian)(dian)(dian)流表充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流不超過發(fa)生器(qi)(qi)的*大充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流，一定要(yao)放(fang)(fang)慢升壓(ya)(ya)速度,避(bi)免充電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)流過大。試(shi)驗完畢(bi)后(hou)，將電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)調(diao)節(jie)電(dian)(dian)(dian)(dian)(dian)(dian)位(wei)(wei)(wei)器(qi)(qi)逆時針(zhen)回到(dao)零(ling)位(wei)(wei)(wei)上(shang)，隨后(hou)按綠(lv)色(se)按鈕(niu)(niu)，切斷高(gao)壓(ya)(ya)。此(ci)時注(zhu)意電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)表上(shang)的電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)降(jiang)到(dao)20kV左(zuo)右,方(fang)可(ke)(ke)用放(fang)(fang)**進行(xing)多(duo)次放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)，確保安(an)全(quan)。

4、在使用過(guo)程中發(fa)現紅燈(deng)滅，綠燈(deng)亮，直流高(gao)壓下降，即為有關(guan)保(bao)護動作。此(ci)時應(ying)按下列步驟操作:

⑴ 將(jiang)調壓電位器退(tui)回零位。

⑵ 關閉電源開關,面板指示燈均不亮。

⑶ 一(yi)分鐘后,待機內低壓電(dian)容器充分放電(dian)后，才允許再次打開電(dian)源開關。

二、產(chan)品(pin)特點

1、同類(lei)產品(pin)體積更(geng)(geng)小(xiao)、重量(liang)更(geng)(geng)輕(qing)、更(geng)(geng)美觀、更(geng)(geng)可(ke)靠、操作簡便、功能(neng)齊全，便于野外使。

2、采用(yong)*技(ji)術(shu)、工藝制造(zao)，應用(yong)新的(de)PWM中頻脈寬調(diao)制技(ji)術(shu)、脈沖串邏(luo)輯(ji)陣列調(diao)制采用(yong)大功(gong)率IGBT器件和電(dian)壓大反饋，從而使輸出高(gao)壓穩定度(du)更高(gao)，波紋系數更小。

3、儀器(qi)主要部件均選用美、德(de)、日等(deng)國(guo)進口(kou)*技術的元器(qi)件，經久耐用，不怕連(lian)續對地(di)直接短(duan)路放電。                      

4、精度高(gao)、測量準確。電(dian)(dian)壓(ya)、電(dian)(dian)流表均為數字顯示(shi)，電(dian)(dian)壓(ya)分辨率為0.1kV，電(dian)(dian)流分辨率為1uA，控制箱上電(dian)(dian)壓(ya)表直(zhi)接(jie)顯示(shi)加(jia)在負載試(shi)品上的(de)電(dian)(dian)壓(ya)值(zhi)，使用時(shi)無需(xu)外加(jia)分壓(ya)器(qi)，接(jie)線簡單(dan)。儀器(qi)具有(you)高(gao)、低壓(ya)端(duan)測量泄漏電(dian)(dian)流，高(gao)壓(ya)端(duan)采用圓形(xing)屏蔽數字表顯示(shi)，不怕(pa)放電(dian)(dian)沖擊，抗干擾性(xing)能(neng)好，適合現場使用。

5、電壓(ya)調(diao)節(jie)(jie)穩(wen)定度高(gao)，全量程(cheng)平滑(hua)調(diao)壓(ya)，輸出電壓(ya)調(diao)節(jie)(jie)采用進口單個多圈電位器，升壓(ya)過程(cheng)平穩(wen)，調(diao)節(jie)(jie)精度高(gao)。

6、負極性輸(shu)出、零啟動、連續可調(diao)、有過(guo)電壓、過(guo)電流、回零、接地保護(hu)、*斷(duan)線保護(hu)等各種(zhong)(zhong)保護(hu)功能。自動保護(hu)電路功能強，保護(hu)完善可靠，使(shi)操作安全(quan)，各種(zhong)(zhong)技術指標(biao)均優于行(xing)業標(biao)準。

7、增設了高精(jing)度75%VDC-1mA的(de)(de)(de)功(gong)能(neng)，做(zuo)(zuo)(zuo)氧(yang)化鋅避雷器(qi)測量帶來極大(da)的(de)(de)(de)方便。輕輕一按(an)(an)無須(xu)計(ji)算。本儀器(qi)控(kong)制箱(xiang)上有(you)75%的(de)(de)(de)電壓功(gong)能(neng)鍵，在做(zuo)(zuo)(zuo)避雷器(qi)試驗(yan)時(shi)，當電流升(sheng)到(dao)1000uA時(shi)、就(jiu)按(an)(an)下0.75UDC--1mA的(de)(de)(de)按(an)(an)鈕，這時(shi)電壓表(biao)、電流表(biao)所顯示的(de)(de)(de)值就(jiu)是75%的(de)(de)(de)數據，做(zuo)(zuo)(zuo)完(wan)后應立即(ji)將調壓電位器(qi)回到(dao)零位上，并應立即(ji)按(an)(an)綠色按(an)(an)鈕，切斷高壓并關(guan)閉電源開(kai)關(guan)。再做(zuo)(zuo)(zuo)其它的(de)(de)(de)試驗(yan)。

8、方便的過電(dian)壓整定設置功能，采(cai)用(yong)了數字撥盤(pan)開關，能將整定電(dian)壓值直(zhi)觀顯(xian)示(shi)，使(shi)你操作更隨意，顯(xian)示(shi)數值單位(wei)為kV。

9、倍壓筒采用(yong)美國(guo)技術(shu)研(yan)制(zhi)生產，中頻變壓器經(jing)有關專家(jia)特殊設計、體積小，容量大，過載能力強，便于現場(chang)作(zuo)業試驗。

10-1、底部設有三只內藏式支(zhi)撐腳，增加了倍壓(ya)筒的穩定性。（適(shi)用(yong)于200KV）

10-2、控制箱上蓋可作為防(fang)風底(di)座，可與倍(bei)壓筒接(jie)插，增強倍(bei)壓筒的穩定性。

三、使用(yong)說(shuo)明：

電(dian)纜耐壓測試(shi)儀的(de)實驗(yan)人員必須是具有“高壓試(shi)驗(yan)上崗證(zheng)"的(de)專業人員

●    使用(yong)本儀器請用(yong)戶必須按(an)《電力安規(gui)》168條規(gui)定，并在(zai)工作電源進入試驗器前加裝(zhuang)兩個明顯斷開點

●    直(zhi)流(liu)高壓在200KV及(ji)以上(shang)時，盡管(guan)試驗(yan)(yan)人員穿(chuan)絕(jue)緣鞋且處在安全(quan)距離以外，但由于高壓直(zhi)流(liu)離子分布的(de)影響，會(hui)使鄰近的(de)人體上(shang)帶有(you)不同的(de)直(zhi)流(liu)電(dian)位，試驗(yan)(yan)人員不要互相握(wo)手或用手接觸接地體等否(fou)則(ze)會(hui)有(you)輕微電(dian)擊現象(xiang)，一般不會(hui)對人造成傷(shang)害。電(dian)纜試驗(yan)(yan)必須使用限(xian)流(liu)電(dian)阻。

●    對大電容試品放(fang)電時(shi)，不(bu)能將放(fang)立(li)即(ji)接(jie)觸試品，應先將放(fang)**逐漸接(jie)近試品，至(zhi)一定距(ju)離(li)空氣間隙開(kai)始(shi)游離(li)放(fang)電有嘶嘶聲。當無聲音時(shi)可用放(fang)**放(fang)電，*后直接(jie)接(jie)地線放(fang)。

四(si)、工作(zuo)原理：

 采用*的(de)脈(mo)沖技(ji)術，結合國內的(de)的(de)高(gao)科(ke)技(ji)手段。

五、使用(yong)前準(zhun)備

⑴ 直流(liu)發生器在使用前應(ying)檢查(cha)其(qi)完(wan)好(hao)性,聯接電纜線不(bu)應(ying)有(you)斷路(lu)和(he)短路(lu)，設備無破裂(lie)等(deng)損(sun)壞。

⑵將機箱、倍壓筒放置到(dao)合適的(de)安全的(de)位置，分(fen)別聯接(jie)好電源(yuan)線(xian)、電纜線(xian)和接(jie)地(di)(di)(di)線(xian)。保(bao)護接(jie)地(di)(di)(di)線(xian)與工作接(jie)地(di)(di)(di)線(xian)以及放**的(de)接(jie)地(di)(di)(di)線(xian)均(jun)應(ying)單獨接(jie)到(dao)試(shi)品的(de)地(di)(di)(di)線(xian)上(即(ji)一點(dian)接(jie)地(di)(di)(di))并確保(bao)接(jie)地(di)(di)(di)良好。嚴禁各接(jie)地(di)(di)(di)線(xian)相互串聯使用，以免(mian)擊穿時地(di)(di)(di)電位抬高形成反擊，損壞(huai)儀器。

⑶ 檢查電(dian)源開關(guan)是否在關(guan)斷的位(wei)置(zhi)上，并檢查電(dian)纜耐壓(ya)測試儀調壓(ya)電(dian)位(wei)器應在零位(wei)上,過(guo)電(dian)壓(ya)保護整定撥盤開關(guan)設置(zhi)在適當的位(wei)置(zhi)上，一般為1.10～1.20倍測試電(dian)壓(ya)值。

2、空載升(sheng)壓(ya)驗證過(guo)電壓(ya)保護(hu)整定值(zhi)

⑴ 請認準(zhun)電(dian)源是單相交流220V，50Hz.接(jie)通電(dian)源開關,此(ci)時綠(lv)燈亮,表示電(dian)源接(jie)通。

⑵ 按紅(hong)色按鈕，則紅(hong)燈亮，表示高壓接(jie)通(tong)。

⑶ 順時(shi)針方向平(ping)緩(huan)調(diao)節調(diao)壓電(dian)(dian)(dian)位器，輸(shu)出端即從零開始升壓。電(dian)(dian)(dian)壓表(biao)顯示為負載試品上(shang)的(de)電(dian)(dian)(dian)壓（KV）值(zhi)，電(dian)(dian)(dian)流表(biao)則顯示試品上(shang)流過的(de)電(dian)(dian)(dian)流與所有泄漏電(dian)(dian)(dian)流之和，電(dian)(dian)(dian)流以微安（uA）為單位。升到所需的(de)電(dian)(dian)(dian)壓后，按規定(ding)時(shi)間記錄電(dian)(dian)(dian)流表(biao)讀數，并檢查(cha)控制(zhi)箱及輸(shu)出電(dian)(dian)(dian)纜有無異(yi)常現(xian)象及聲響。

⑷ 降壓，將調壓電位器(qi)回零后(hou)，隨后(hou)按(an)綠色按(an)鈕，切斷(duan)高(gao)壓并關閉電源開關。

3、對試品(pin)進行(xing)泄漏及直流(liu)耐壓試驗

⑴ 在做負(fu)載試(shi)驗前，將高壓(ya)屏蔽微安(an)表(biao)安(an)裝到倍壓(ya)筒上(shang)的(de)高壓(ya)輸出(chu)端(duan)上(shang)，并將配(pei)套的(de)專用高壓(ya)線分別接到微安(an)表(biao)上(shang)和被試(shi)品(pin)上(shang)。

⑵ 檢查(cha)儀器、放電(dian)bang、倍壓筒、試(shi)品聯接線、接地線是(shi)否(fou)正確(que)，接地線聯接是(shi)否(fou)可(ke)靠，檢查(cha)高(gao)壓安(an)全距離是(shi)否(fou)符合(he)要求，方(fang)可(ke)開始進行試(shi)品的高(gao)壓試(shi)驗(yan)。

⑶ 檢查確認儀器(qi)等無異常情(qing)況后，接(jie)通(tong)(tong)單相交(jiao)流220V電源開(kai)關，此時綠燈亮，表示電源接(jie)通(tong)(tong)。可開(kai)始進行試品(pin)的直流泄(xie)漏和直流耐壓試驗。

⑷ 按紅色(se)按鈕，則紅燈(deng)亮，表示高壓接通，待升高壓。

⑸ 順時針(zhen)方向平緩(huan)調(diao)節調(diao)壓(ya)(ya)電(dian)(dian)位(wei)器(qi),輸出端即(ji)從零開始升(sheng)壓(ya)(ya)。升(sheng)壓(ya)(ya)速(su)度以每秒3-5kV上升(sheng)試驗電(dian)(dian)壓(ya)(ya)為宜。對于(yu)大(da)(da)電(dian)(dian)容試品升(sheng)壓(ya)(ya)時則需要緩(huan)慢升(sheng)壓(ya)(ya)，否則可能導(dao)致電(dian)(dian)壓(ya)(ya)過沖,還需監視電(dian)(dian)流表充電(dian)(dian)電(dian)(dian)流不超過直流發生(sheng)器(qi)的*大(da)(da)充電(dian)(dian)電(dian)(dian)流。當升(sheng)到所(suo)需的電(dian)(dian)壓(ya)(ya)或電(dian)(dian)流后，按(an)規定時間記錄電(dian)(dian)流表及電(dian)(dian)壓(ya)(ya)表的讀數。

⑹ 試驗(yan)完(wan)畢后(hou)，降壓，將(jiang)調壓電(dian)位器回零后(hou)，隨后(hou)按綠色按鈕，切斷高壓并關(guan)(guan)閉電(dian)源開關(guan)(guan)。

江蘇直流電纜耐壓測試儀試驗完畢后，將電壓調節電位器逆時針回到零位上，隨后按綠色按鈕，切斷高壓。此時注意電壓表上的電壓降到20kV左右,方可用放**進行多次放電，確保安全。