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YZLX857直流(liu)接地故(gu)障測(ce)試儀:用(yong)于在不斷電情況下查(cha)找發電廠、變電站直流(liu)系統(tong)(tong)接地點的準確(que)位置。該(gai)儀器在原理上(shang)引入一種全新的探測(ce)方法----波(bo)形分析法,其主要(yao)特點和(he)優點:檢測(ce)靈敏度高、排查(cha)系統(tong)(tong)分布電容能(neng)力強、不斷電查(cha)找、不影(ying)響系統(tong)(tong)正常運行、抗干擾能(neng)力強、安全可靠等。
YZLX857直流接地故障測試儀
產品(pin)介紹(shao):
YZLX857直流接地故障測試儀是(shi)一種榮獲國家(jia)的新(xin)型智(zhi)能數(shu)字化產品(pin)。主要用于電(dian)力、石油化工、煤炭等(deng)部(bu)門的發電(dian)廠或變(bian)電(dian)站(zhan)的220V、110V、48V、24V等(deng)直(zhi)流系(xi)統(tong)(tong)接(jie)(jie)地故(gu)障查(cha)找(zhao)和判(pan)斷(duan)。直(zhi)流系(xi)統(tong)(tong)接(jie)(jie)地故(gu)障測試(shi)儀在查(cha)找(zhao)直(zhi)流系(xi)統(tong)(tong)故(gu)障時,不需拉開直(zhi)流系(xi)統(tong)(tong)的電(dian)源,就可以查(cha)找(zhao)出接(jie)(jie)地點,并且具有使用簡(jian)單、安全可靠等(deng)優點,是(shi)發電(dian)廠、變(bian)電(dian)站(zhan)查(cha)找(zhao)直(zhi)流系(xi)統(tong)(tong)接(jie)(jie)地故(gu)障的儀器。
直(zhi)(zhi)(zhi)流系統(tong)接地(di)故(gu)障測(ce)試儀可(ke)(ke)帶電(dian)(dian)(dian)查(cha)找(zhao)(zhao)(zhao)各種(zhong)接地(di):單回線(xian)供電(dian)(dian)(dian)、雙(shuang)回線(xian)供電(dian)(dian)(dian)、環網供電(dian)(dian)(dian)、二(er)極(ji)管(guan)隔離供電(dian)(dian)(dian)接地(di),平衡接地(di),一(yi)點(dian)或(huo)多點(dian)接地(di)。帶電(dian)(dian)(dian)查(cha)找(zhao)(zhao)(zhao)各種(zhong)串(chuan)電(dian)(dian)(dian):I、II段同(tong)(tong)極(ji)串(chuan)電(dian)(dian)(dian)、正負極(ji)串(chuan)電(dian)(dian)(dian)、交直(zhi)(zhi)(zhi)流串(chuan)電(dian)(dian)(dian)。其*的(de)智能化定向(xiang)定點(dian)技(ji)術能指明(ming)查(cha)找(zhao)(zhao)(zhao)方向(xiang),多種(zhong)提示(shi)(shi)直(zhi)(zhi)(zhi)接指引查(cha)找(zhao)(zhao)(zhao)到(dao)故(gu)障點(dian),可(ke)(ke)直(zhi)(zhi)(zhi)觀顯示(shi)(shi)查(cha)找(zhao)(zhao)(zhao)點(dian)故(gu)障性(xing)質(阻性(xing)、容性(xing)、感性(xing)),彩色液晶表盤直(zhi)(zhi)(zhi)接指示(shi)(shi),真人(ren)語(yu)音播報當前狀(zhuang)態,用戶可(ke)(ke)根(gen)據信號性(xing)質判(pan)斷故(gu)障的(de)方向(xiang),即使是非專(zhuan)業(ye)人(ren)員(yuan)也可(ke)(ke)輕(qing)松查(cha)找(zhao)(zhao)(zhao)到(dao)故(gu)障點(dian)。專(zhuan)家模式下(xia)大(da)屏(ping)幕彩色液晶實時(shi)顯示(shi)(shi)接地(di)電(dian)(dian)(dian)流真實波形(xing)及(ji)接地(di)電(dian)(dian)(dian)阻,接地(di)判(pan)斷更直(zhi)(zhi)(zhi)觀明(ming)了。抗分布電(dian)(dian)(dian)容設計,*消除現場分布電(dian)(dian)(dian)容影響。屏(ping)幕中(zhong)文提示(shi)(shi),指導查(cha)找(zhao)(zhao)(zhao)接地(di)。鉗子“心(xin)”圓設計,同(tong)(tong)時(shi)可(ke)(ke)夾(jia)多根(gen)電(dian)(dian)(dian)纜(lan)或(huo)單根(gen)回路(lu),另配有國(guo)內(nei)小(xiao)(xiao)鴨(ya)嘴(zui)形(xing)小(xiao)(xiao)鉗口。小(xiao)(xiao)電(dian)(dian)(dian)流設計,對繼電(dian)(dian)(dian)保護、自動裝(zhuang)置沒有影響。
▲直流(liu)系(xi)統接地故(gu)障測試儀工作模式
直(zhi)(zhi)(zhi)流(liu)系(xi)統接地(di)(di)故(gu)障(zhang)(zhang)測(ce)試(shi)儀用(yong)于(yu)在不(bu)斷電(dian)(dian)(dian)情況下查(cha)(cha)找(zhao)發電(dian)(dian)(dian)廠、變電(dian)(dian)(dian)站直(zhi)(zhi)(zhi)流(liu)系(xi)統接地(di)(di)點(dian)(dian)的(de)準確位(wei)(wei)置。該儀器在原(yuan)理上引入(ru)一種全新的(de)探測(ce)方法----波(bo)(bo)形(xing)分析(xi)(xi)(xi)法,其(qi)主要特點(dian)(dian)和優點(dian)(dian):檢測(ce)靈(ling)敏度高、排查(cha)(cha)系(xi)統分布(bu)電(dian)(dian)(dian)容能(neng)力強、不(bu)斷電(dian)(dian)(dian)查(cha)(cha)找(zhao)、不(bu)影響(xiang)系(xi)統正常運行(xing)、抗(kang)干(gan)擾能(neng)力強、安全可(ke)靠等(deng)。 波(bo)(bo)形(xing)分析(xi)(xi)(xi)法,就是利用(yong)在直(zhi)(zhi)(zhi)流(liu)母線與地(di)(di)之間加入(ru)一種特定的(de)周(zhou)期(qi)性(xing)電(dian)(dian)(dian)壓信(xin)號(hao)(hao),通(tong)過卡鉗式探頭探測(ce)各支路電(dian)(dian)(dian)流(liu),分析(xi)(xi)(xi)、計算(suan)電(dian)(dian)(dian)流(liu)信(xin)號(hao)(hao)基波(bo)(bo)與諧波(bo)(bo)的(de)相(xiang)位(wei)(wei)及相(xiang)位(wei)(wei)差,進(jin)而判斷是否(fou)存在接地(di)(di)故(gu)障(zhang)(zhang)及接地(di)(di)故(gu)障(zhang)(zhang)點(dian)(dian)。 其(qi)*的(de)智能(neng)化定向定點(dian)(dian)技術能(neng)指(zhi)明查(cha)(cha)找(zhao)方向,多種提示(shi)直(zhi)(zhi)(zhi)接指(zhi)引查(cha)(cha)找(zhao)到故(gu)障(zhang)(zhang)點(dian)(dian),可(ke)直(zhi)(zhi)(zhi)觀顯示(shi)查(cha)(cha)找(zhao)點(dian)(dian)故(gu)障(zhang)(zhang)性(xing)質(阻性(xing)、容性(xing)、感(gan)性(xing)),彩色(se)液(ye)晶表盤直(zhi)(zhi)(zhi)接指(zhi)示(shi),真人(ren)語音(yin)播報(bao)當(dang)前(qian)狀態,用(yong)戶可(ke)根據信(xin)號(hao)(hao)性(xing)質判斷故(gu)障(zhang)(zhang)的(de)方向,即(ji)使是非專(zhuan)業人(ren)員也可(ke)輕松查(cha)(cha)找(zhao)到故(gu)障(zhang)(zhang)點(dian)(dian)。
▲直(zhi)流系(xi)統(tong)接地故(gu)障(zhang)測試儀功能特點
安全(quan)性(xing)高(gao):根(gen)據(ju)直(zhi)流系(xi)(xi)統嚴格的安全(quan)要求設(she)計(ji),三檔電壓可(ke)調,三檔電流可(ke)調,適(shi)合于不(bu)(bu)同直(zhi)流系(xi)(xi)統接地(di)故障測試儀現場(chang)使用(yong)照片的測試系(xi)(xi)統,采用(yong)數字(zi)濾波技(ji)術,保證在正(zheng)常使用(yong)時與信號(hao)系(xi)(xi)統互不(bu)(bu)干(gan)擾,不(bu)(bu)會(hui)造成(cheng)安全(quan)型繼電器錯誤動(dong)作,不(bu)(bu)會(hui)錯誤點燈,不(bu)(bu)會(hui)吸收信號(hao)電源電流;
實(shi)用(yong)性(xing)強:查(cha)找(zhao)時不必(bi)停電,不必(bi)摘頭甩線(xian),可在線(xian)使用(yong),能應用(yong)于(yu)復雜(za)的網(wang)狀配線(xian)中。其*的智能化定向(xiang)定點技術能指(zhi)明(ming)查(cha)找(zhao)方向(xiang),指(zhi)出(chu)故障(zhang)點處所,猶如向(xiang)導一般,帶領(ling)查(cha)找(zhao)者直(zhi)奔(ben)故障(zhang)點。采(cai)用(yong)彩色液晶顯示器,友好的智能化人機界面(mian),使操作簡便實(shi)用(yong);
抗(kang)干(gan)擾(rao)性強:*的技術(shu),三種輸出(chu)測(ce)試(shi)頻(pin)率,可根據不同的測(ce)試(shi)系統選用不同的測(ce)試(shi)頻(pin)率,超低頻(pin)模式,保證查找時不受(shou)線(xian)間分布電(dian)容(rong)干(gan)擾(rao),不受(shou)接地(di)阻值干(gan)擾(rao),不受(shou)工頻(pin)干(gan)擾(rao),高頻(pin)模式,可以快速(su)的定位故(gu)障區域,具有強的抗(kang)干(gan)擾(rao)能力(li);
▲直流系統接地故障(zhang)測試儀技術參數(shu)
信號發(fa)生器:
輸出(chu)信號(hao)頻率:0.2HZ、4Hz/8HZ、300HZ
輸出大信號(hao)電壓:±24V±5%
測量對地電(dian)阻(zu):0-999 kΩ,分辨(bian)率(lv)1 kΩ
測(ce)量對地分布電容:0-999 uF,分辨率1 uF
輸出(chu)電流:0—3mA
抗分布電容干擾:800kΩ/uF
電(dian)源方式(shi):電(dian)池供(gong)電(dian)
顯(xian)示方式:彩(cai)色液晶顯(xian)示器
適用(yong)于直流系統(tong)電(dian)壓等級(ji):220V、110V、48V、24V信(xin)號(hao)接收器:
靈敏度:可(ke)查(cha)找500 KΩ以內的(de)各種(zhong)接地故障(zhang);
查(cha)找(zhao)接地點準確(que)率:100%;
指示接地方向(xiang):箭頭指示、真(zhen)人語(yu)音提示;
顯示接地電(dian)流:0—3mA;
信號顯(xian)示:波形(xing)顯(xian)示;
鉗形互感器:2把 絕緣≥100MΩ
工作電源:電池供電
大鉗:可檢測電纜線徑(jing)≤42mm;
小鉗: 可檢測電纜線徑≤6mm
▲直(zhi)流系統接地故(gu)障(zhang)測試儀產品配置(zhi)
標準配置:信(xin)號發生器:一(yi)(yi)臺(tai)、信(xin)號接收機:一(yi)(yi)臺(tai)、卡鉗:2支、充電器:1個、信(xin)號輸出引線(xian):1根、電源線(xian):1根、使用說明書:一(yi)(yi)本、鋁合金箱:一(yi)(yi)個