一：全自動電容電流測試儀廠家 - 科拓電力產品概述(shu)

目前，我(wo)國(guo)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)系統的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源中性點(dian)一般是(shi)不(bu)直(zhi)接接地(di)(di)(di)的(de)(de)，所(suo)以當(dang)(dang)線(xian)路單(dan)相(xiang)(xiang)接地(di)(di)(di)時(shi)流(liu)過故障(zhang)點(dian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)實際(ji)是(shi)線(xian)路對地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)產生(sheng)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。據統計，配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)故障(zhang)很大(da)(da)程(cheng)度(du)是(shi)由于(yu)線(xian)路單(dan)相(xiang)(xiang)接地(di)(di)(di)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)過大(da)(da)而無法自行(xing)息弧(hu)引起的(de)(de)。因(yin)此，我(wo)國(guo)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力規程(cheng)規定當(dang)(dang)10kV和35kV系統電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)分別大(da)(da)于(yu)30A和10A時(shi)，應(ying)裝設消弧(hu)線(xian)圈以補(bu)償電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，這就要求對配(pei)網的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)進行(xing)測(ce)(ce)量后做(zuo)決(jue)定。另外，配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)對地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)和PT的(de)(de)參數配(pei)合會產生(sheng)PT鐵磁諧振過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓。為了(le)驗(yan)證該(gai)配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)系統是(shi)否會發(fa)生(sheng)PT諧振及發(fa)生(sheng)什么性質的(de)(de)諧振，也必須(xu)準確測(ce)(ce)量配(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)對地(di)(di)(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)值。傳統的(de)(de)測(ce)(ce)量配(pei)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)方(fang)法有(you)單(dan)相(xiang)(xiang)金屬接地(di)(di)(di)的(de)(de)直(zhi)接法、外加電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)間(jian)接測(ce)(ce)量法等，這些(xie)方(fang)法都要接觸到一次設備(bei)，因(yin)而存在試驗(yan)危險、操作繁雜，工作效率低等缺點(dian)。

二、功能特點(dian)

• 直接從PT的二次側(ce)測量配電網的電容電流(liu)，無(wu)需和一次側(ce)打交道；
• 不存在(zai)試驗的危(wei)險性，無需做繁雜的安全措施(shi)和等待冗長的調度命令(ling)；
• 只需將測量線(xian)接于PT的(de)開口三角端就可以測量出(chu)電(dian)容電(dian)流(liu)的(de)數據；
• PT開口三角處注(zhu)入(ru)的(de)微弱(ruo)異頻測試信號，不會對繼電(dian)保(bao)護和PT本身(shen)產生任(ren)何(he)影響，也(ye)避(bi)開了(le)50Hz的(de)工頻干擾信號；
• 輸(shu)出(chu)端可以耐受100V的交(jiao)流電壓(ya)，測量時系統有單相接地故障發生，亦不會損(sun)壞PT和測試儀；
• 無需做特別的安全措施，使這項工作變得安全、簡單、快捷，且測(ce)試(shi)結(jie)果(guo)準確、穩(wen)定、可靠。

三(san)、全自動電容電流測試儀廠家 - 科拓電力技術參(can)數

測量范圍   電容：0.3～125μF

           電流：1～250A

測量誤差   ≤5%

外形尺寸   345mm×295mm×175mm

儀器重量(liang)   5kg

四、使用(yong)條(tiao)件(jian)

環境(jing)溫(wen)度(du)   -10℃～50℃

環境濕(shi)度   ≤85%RH

工作電源   AC220V±20%

電源頻(pin)率(lv)   50±5Hz