電纜故障(zhang)測試儀(yi)應用注意事項

電(dian)纜故(gu)障(zhang)(zhang)測(ce)(ce)試(shi)儀是(shi)一套綜(zong)合性的設(she)備(bei)。用于(yu)電(dian)力電(dian)纜開路(lu)、短路(lu)、接(jie)地、低(di)阻(zu)、高阻(zu)閃(shan)絡性及高阻(zu)泄漏(lou)性故(gu)障(zhang)(zhang)的測(ce)(ce)試(shi)，以(yi)及同軸通信電(dian)纜和市(shi)話電(dian)纜的開路(lu)、短路(lu)故(gu)障(zhang)(zhang)的測(ce)(ce)試(shi)。還(huan)可以(yi)測(ce)(ce)試(shi)電(dian)纜路(lu)徑、埋深，以(yi)及電(dian)波測(ce)(ce)速，核定(ding)電(dian)纜長度等，并可建立電(dian)纜檔案(an)以(yi)便日常維護管理。

電(dian)纜故障測試儀使用過程中的注意事項：

1.脈沖法測試時，注意要甩掉局內所有(you)設備，在zui外(wai)線上(shang)進行測量(liang)。

2.使(shi)用閃絡(luo)法測(ce)試時，必須將觸發(fa)工(gong)作方(fang)式開關置于(yu)“閃絡(luo)"位置。

3.在使用直閃法(fa)或沖(chong)閃法(fa)測試(shi)時，要注意(yi)人身(shen)安(an)全及設備安(an)全。必須接好地線(xian)。

4.在閃絡法測試結束后，切斷電(dian)(dian)(dian)(dian)(dian)源，拆(chai)除本(ben)儀器與高壓(ya)測試裝置(zhi)的(de)連接(jie)(jie)線，再對高壓(ya)電(dian)(dian)(dian)(dian)(dian)容(rong)器和電(dian)(dian)(dian)(dian)(dian)纜的(de)所貯電(dian)(dian)(dian)(dian)(dian)荷進行放(fang)電(dian)(dian)(dian)(dian)(dian)。放(fang)電(dian)(dian)(dian)(dian)(dian)時(shi)，應(ying)先加(jia)限流電(dian)(dian)(dian)(dian)(dian)阻R限制放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流以使電(dian)(dian)(dian)(dian)(dian)流緩慢放(fang)電(dian)(dian)(dian)(dian)(dian)，待電(dian)(dian)(dian)(dian)(dian)容(rong)器上電(dian)(dian)(dian)(dian)(dian)壓(ya)降(jiang)低(di)后，再直接(jie)(jie)對地放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)路中電(dian)(dian)(dian)(dian)(dian)阻為零，瞬間放(fang)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流可(ke)高達(da)幾(ji)百安培，將發(fa)生嚴(yan)重的(de)設備或人身事故(gu)。

5.在(zai)直閃(shan)法(fa)測(ce)試(shi)過程(cheng)中，必須注意(yi)監視故障的泄(xie)漏(lou)電流若(ruo)電流突然(ran)增大，故障閃(shan)絡現(xian)象未曾出現(xian)，應立即(ji)降低試(shi)驗電壓，改用沖閃(shan)法(fa)測(ce)試(shi)。

電(dian)(dian)(dian)纜(lan)故障(zhang)測試(shi)儀(yi)系統的(de)(de)暢通和電(dian)(dian)(dian)力的(de)(de)輸送有賴于電(dian)(dian)(dian)纜(lan)線路(lu)(lu)的(de)(de)正常運行(xing)。一旦線路(lu)(lu)發生障(zhang)礙，就會(hui)造成(cheng)通信(xin)和電(dian)(dian)(dian)力的(de)(de)中斷，如(ru)不(bu)能(neng)及時查出故障(zhang)并迅(xun)速予(yu)以排除，就會(hui)造成(cheng)很大(da)的(de)(de)經濟(ji)損失和不(bu)良的(de)(de)社會(hui)影響(xiang)。因(yin)此，維(wei)護人員應(ying)當在(zai)工作過程中注(zhu)意保證(zheng)電(dian)(dian)(dian)纜(lan)故障(zhang)測試(shi)儀(yi)能(neng)正常運行(xing)。

附上目前使用范圍比較廣(guang)的MS-801C電纜故障測試儀的具體參數供大家參考：

1.測(ce)試(shi)距離(li)：單端測(ce)試(shi)距離(li)≤10千(qian)米

2.zui短測試(shi)距(ju)(盲區)：小于(yu)V/15(米)

其(qi)中：V電波在被測電纜中的傳播速度

3.測試誤(wu)差：相對誤(wu)差：≤±2%；誤(wu)差：故障(zhang)點(dian)在千米以內≤15米

故障點在千(qian)米(mi)以上≤20米

4.讀數分辨(bian)率：V/60米

其中：V電波在被測電纜中的傳播速度。如：“油浸紙電纜"，電波傳播速度為160m/us儀器的讀數zui小分辨率為2.66米，即屏幕上光標每移動一點，讀數變化2.6米。

5.電源：AC 220V±10% 50Hz

6.環境條件： 溫度：0℃～50℃ 相對濕度：80%±5%

7.主機體積：350×250×200(mm)

8.主機重量：5kg

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