一：全自動電容電流測試儀廠家 - 科拓電力產品概述

目前，我國配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)源中(zhong)性點一(yi)般是不(bu)直接(jie)(jie)(jie)(jie)接(jie)(jie)(jie)(jie)地(di)的(de)(de)(de)(de)，所以當(dang)線(xian)(xian)路單(dan)相(xiang)(xiang)接(jie)(jie)(jie)(jie)地(di)時(shi)流(liu)過故障(zhang)點的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)實際是線(xian)(xian)路對(dui)地(di)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)產生(sheng)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。據統(tong)(tong)計，配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)故障(zhang)很(hen)大(da)程(cheng)度(du)是由于(yu)線(xian)(xian)路單(dan)相(xiang)(xiang)接(jie)(jie)(jie)(jie)地(di)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)過大(da)而(er)無法(fa)自(zi)行(xing)息弧引起(qi)的(de)(de)(de)(de)。因此，我國的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)力規(gui)程(cheng)規(gui)定當(dang)10kV和(he)35kV系(xi)統(tong)(tong)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)分別(bie)大(da)于(yu)30A和(he)10A時(shi)，應裝(zhuang)設消弧線(xian)(xian)圈以補償電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這就要求對(dui)配(pei)(pei)網的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)進行(xing)測(ce)量(liang)后做決(jue)定。另外(wai)，配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)對(dui)地(di)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)和(he)PT的(de)(de)(de)(de)參數(shu)配(pei)(pei)合會產生(sheng)PT鐵磁諧振(zhen)過電(dian)(dian)(dian)(dian)(dian)(dian)壓。為(wei)了驗(yan)證該配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)是否會發生(sheng)PT諧振(zhen)及發生(sheng)什么(me)性質(zhi)的(de)(de)(de)(de)諧振(zhen)，也(ye)必須準確測(ce)量(liang)配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)對(dui)地(di)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)值。傳(chuan)統(tong)(tong)的(de)(de)(de)(de)測(ce)量(liang)配(pei)(pei)網電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)(de)方法(fa)有(you)單(dan)相(xiang)(xiang)金屬接(jie)(jie)(jie)(jie)地(di)的(de)(de)(de)(de)直接(jie)(jie)(jie)(jie)法(fa)、外(wai)加電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)間接(jie)(jie)(jie)(jie)測(ce)量(liang)法(fa)等，這些方法(fa)都要接(jie)(jie)(jie)(jie)觸到(dao)一(yi)次設備(bei)，因而(er)存(cun)在試驗(yan)危險、操(cao)作(zuo)繁雜，工作(zuo)效(xiao)率(lv)低等缺點。

二(er)、功能特點

• 直(zhi)接(jie)從PT的(de)二次(ci)側測量配電(dian)網(wang)的(de)電(dian)容電(dian)流，無(wu)需和一(yi)次(ci)側打(da)交道(dao)；
• 不存在試(shi)驗的(de)危(wei)險性，無(wu)需做繁雜(za)的(de)安(an)全措施和等(deng)待(dai)冗長的(de)調度命令；
• 只需將測量線接于PT的(de)(de)開口(kou)三角端就可以測量出電(dian)容電(dian)流的(de)(de)數據；
• PT開口三角處(chu)注入的(de)微弱異頻測試信(xin)號(hao)，不(bu)會對繼電保護和(he)PT本身產生任何影響，也(ye)避(bi)開了50Hz的(de)工頻干擾信(xin)號(hao)；
• 輸出端可以(yi)耐受100V的交流(liu)電壓(ya)，測量(liang)時系統有單(dan)相接地(di)故(gu)障發(fa)生，亦不會損(sun)壞PT和測試儀；
• 無需(xu)做特別的安全措施，使(shi)這項工作(zuo)變得安全、簡單、快捷，且測(ce)試結果準(zhun)確、穩定(ding)、可靠。

三、全自動電容電流測試儀廠家 - 科拓電力技術參數

測量(liang)范圍   電(dian)容：0.3～125μF

           電流：1～250A

測(ce)量(liang)誤(wu)差   ≤5%

外形(xing)尺寸   345mm×295mm×175mm

儀器重量   5kg

四、使用條件

環境溫(wen)度   -10℃～50℃

環境濕度   ≤85%RH

工(gong)作電源(yuan)   AC220V±20%

電源頻率   50±5Hz