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產品展示您的位置 >> 首頁 > 產品展示 > 電力檢修儀器儀表 > HZJD-614接地電阻測試儀 > HZYF-406互感器二次降壓及負荷測試儀
執行標準: DL/T448-2000 JJG169-2010 目前對(dui)互(hu)(hu)(hu)感(gan)(gan)器(qi)誤差測試(shi)時,通常按(an)互(hu)(hu)(hu)感(gan)(gan)器(qi)銘牌(pai)上的規(gui)定用電流負(fu)荷(he)箱和電壓負(fu)荷(he)箱對(dui)互(hu)(hu)(hu)感(gan)(gan)器(qi)進(jin)行測試(shi),但互(hu)(hu)(hu)感(gan)(gan)器(qi)運行過程中實際(ji)二(er)次(ci)負(fu)荷(he)是多少?是不是就(jiu)是互(hu)(hu)(hu)感(gan)(gan)器(qi)銘牌(pai)上規(gui)定值?互(hu)(hu)(hu)感(gan)(gan)器(qi)在實際(ji)二(er)次(ci)負(fu)荷(he)下的誤差是多少?為(wei)了(le)解決上述問題(ti),實際(ji)測試(shi)互(hu)(hu)(hu)感(gan)(gan)器(qi)二(er)次(ci)負(fu)荷(he)就(jiu)顯得(de)特別重要
一、產品概述:
目前對(dui)互(hu)感器(qi)誤差測(ce)(ce)試時(shi)(shi),通(tong)常按(an)互(hu)感器(qi)銘牌上(shang)的(de)規定用(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)流(liu)負(fu)(fu)(fu)荷(he)箱和電(dian)(dian)(dian)(dian)(dian)壓(ya)負(fu)(fu)(fu)荷(he)箱對(dui)互(hu)感器(qi)進(jin)行測(ce)(ce)試,但互(hu)感器(qi)運行過程中實(shi)(shi)際(ji)(ji)二次(ci)負(fu)(fu)(fu)荷(he)是多(duo)少(shao)?是不(bu)是就是互(hu)感器(qi)銘牌上(shang)規定值?互(hu)感器(qi)在(zai)實(shi)(shi)際(ji)(ji)二次(ci)負(fu)(fu)(fu)荷(he)下的(de)誤差是多(duo)少(shao)?為(wei)了(le)解決(jue)上(shang)述問(wen)題(ti),實(shi)(shi)際(ji)(ji)測(ce)(ce)試互(hu)感器(qi)二次(ci)負(fu)(fu)(fu)荷(he)就顯得(de)特(te)別重要。同時(shi)(shi)在(zai)測(ce)(ce)試實(shi)(shi)際(ji)(ji)二次(ci)負(fu)(fu)(fu)荷(he)過程中如(ru)何取(qu)樣(yang)電(dian)(dian)(dian)(dian)(dian)流(liu)信號也(ye)是比較重要的(de)問(wen)題(ti)。在(zai)測(ce)(ce)試現場二次(ci)負(fu)(fu)(fu)荷(he)時(shi)(shi)停電(dian)(dian)(dian)(dian)(dian)斷開電(dian)(dian)(dian)(dian)(dian)流(liu)回路既不(bu)方便也(ye)不(bu)安全。我公(gong)(gong)司(si)產品采(cai)用(yong)(yong)(yong)(yong)鉗(qian)型電(dian)(dian)(dian)(dian)(dian)流(liu)互(hu)感器(qi)(鉗(qian)表)對(dui)線路電(dian)(dian)(dian)(dian)(dian)流(liu)進(jin)行采(cai)樣(yang),方便用(yong)(yong)(yong)(yong)戶使用(yong)(yong)(yong)(yong)。另外有(you)些公(gong)(gong)司(si)產品采(cai)用(yong)(yong)(yong)(yong)取(qu)PT電(dian)(dian)(dian)(dian)(dian)壓(ya)作為(wei)儀器(qi)工作電(dian)(dian)(dian)(dian)(dian)源,這(zhe)種方式(shi)(shi)不(bu)是很安全,在(zai)這(zhe)種方式(shi)(shi)下,相(xiang)當(dang)于給PT/CT增加了(le)負(fu)(fu)(fu)荷(he),同時(shi)(shi)儀器(qi)變壓(ya)器(qi)的(de)瞬間激磁電(dian)(dian)(dian)(dian)(dian)流(liu)很可能引起系統保護動作,影響供電(dian)(dian)(dian)(dian)(dian)安全。我公(gong)(gong)司(si)儀器(qi)采(cai)用(yong)(yong)(yong)(yong)大容量(liang)鋰電(dian)(dian)(dian)(dian)(dian)池作為(wei)儀器(qi)工作電(dian)(dian)(dian)(dian)(dian)源,既可以(yi)保障系統安全又可以(yi)給儀器(qi)提供比較純(chun)凈的(de)電(dian)(dian)(dian)(dian)(dian)源,避免(mian)現場電(dian)(dian)(dian)(dian)(dian)源干擾,保證(zheng)測(ce)(ce)量(liang)精度。
二、產品特點:
1、可以實現三相(xiang)三線,三相(xiang)四線、單相(xiang)全自動(dong)測(ce)量;
2、使用工程塑料機箱,結識耐(nai)用,有效保(bao)障(zhang)測試人員及(ji)系統(tong)安(an)全;
3、儀器具有量(liang)程自動切換(huan)功能(neng),保(bao)證測試精度;
4、采用(yong)電子式原理線路結合DSP技(ji)術是使測試穩定性好,抗(kang)干擾能力強;
5、測量完(wan)畢(bi),自動計算和(he)負(fu)荷相關的各(ge)項參數,便(bian)于客戶分(fen)析和(he)試(shi)驗。
6、采用大屏幕漢字液晶(jing)顯示,所有操作均由漢字菜單提示; 數據(ju)具備掉(diao)電存貯及瀏覽功能,能與計(ji)算(suan)機聯機傳(chuan)送數據(ju)。
7、采用大容量7.2V11Ah鋰電(dian)池供(gong)電(dian),對測(ce)試回路(lu)不產(chan)生任何影響,避免系(xi)統出現保護的情況。同時在(zai)現場無供(gong)電(dian)電(dian)源的情況下使用。
8、次負荷測(ce)(ce)試,采(cai)用鉗型電流表采(cai)樣(yang)電流,不(bu)需要斷開二(er)次回路。可以(yi)實現不(bu)停電在線(xian)測(ce)(ce)量。自動切換量程:測(ce)(ce)量過程中(zhong)可以(yi)根據測(ce)(ce)試對象(xiang)數(shu)值的不(bu)同(tong)切換到(dao)不(bu)同(tong)的位(wei)置,使測(ce)(ce)量精度(du)和顯示(shi)位(wei)數(shu)得到(dao)保證(zheng)。
9、作(zuo)時(shi)間可(ke)以(yi)長(chang)達24小時(shi)(zui長(chang))。
10、附(fu)有(you)輕巧充電器,方便測量(liang),在電池(chi)電量(liang)不足的情況(kuang)下可(ke)以外(wai)接(jie)充電器測量(liang)。
11、儀器體積小,重量輕。
12、極寬闊的二次工作電(dian)(dian)(dian)(dian)流/電(dian)(dian)(dian)(dian)壓(ya)范圍。在(zai)50mA的工作電(dian)(dian)(dian)(dian)流下,能分辨1mΩ的電(dian)(dian)(dian)(dian)阻(zu)和電(dian)(dian)(dian)(dian)抗,能測(ce)試二次額定電(dian)(dian)(dian)(dian)流為5A的S級(ji)電(dian)(dian)(dian)(dian)流互感器的在(zai)線實(shi)際負荷;在(zai)5V的工作電(dian)(dian)(dian)(dian)壓(ya)下,能分辨0.001mS的電(dian)(dian)(dian)(dian)導和電(dian)(dian)(dian)(dian)納
13、能存儲480組測量數據,斷電后(hou)能保持十年
14、中(zhong)文界面大屏幕(mu)顯示,帶有RS-232通訊接口
產品參數
型號參數對應表
使用環境 | 溫度 | -5°C~40°C |
相對濕度 | <95%(25°C) | |
海拔高度 | <2500m | |
外界干擾 | 無特強震動、無特強電磁場 | |
二次壓降(jiang)測試時儀器主要(yao)技(ji)術指標 | 測量范圍 | 比(bi)差:0.001%~19.99% 角差:0.01’ ~599’ |
分 辨(bian) 率 | 比差(cha):0.001% 角差(cha):0.01’ | |
儀器基本誤差 | DX=( X×2%+ Y×2%)±2個字 | |
DY=( Y×2%+ X×2%×34.38)±2個字 | ||
儀器的量化誤差 | ||
電壓表頭準確度 | 0.5% | |
工作范圍 | 電壓:(50~120)V | |
儀器指示動作值(zhi)(提示錯誤) | 誤差:比差大(da)于(yu)20%或角差大(da)于(yu)600’; 電壓:電壓<2.0V | |
PT二次負荷測試時儀器(qi)主要技術指標 | PT二次負荷測試 | 導納(na)測量范圍:0.1ms—50.0ms |
導納測量準確度 | ||
二(er)次電壓(ya)(50V-120V) | ||
儀器基本誤差 | DX=( X×2%+ Y×2%)±2個字(zi) | |
DY=( Y×2%+ X×2%×34.38)±2個字(zi) | ||
電壓表頭 | 0.5% | |
CT二次負(fu)荷測試時儀器主要技術指標(biao) | 阻抗測量范圍 | 0.1Ω—50.0Ω |
阻抗測量準確度 | DX=( X×2%+ Y×2%)±2個字 | |
DY=( Y×2%+ X×2%×34.38)±2個(ge)字 | ||
2個字(zi)——儀器(qi)的量化(hua)誤差 | ||
電流表頭 | 1% |