由于電纜深埋地下，而且長度較大，電纜故障探測起來也比較麻煩。雖然現(xiàn)在有電纜故障測試儀的輔助，但是由于電纜鋪設(shè)的環(huán)境復(fù)雜，進(jìn)行探測工作的時(shí)候，也是有很多需要注意的事項(xiàng)。那么地埋故障探測都需要注意哪些事項(xiàng)？

Because the cable is deeply buried underground and has a large length, it is also troublesome to detect cable faults. Although there is now a cable fault tester to assist, but because of the complex environment of cable laying, there are many things to pay attention to when carrying out detection work. So what should be paid attention to when detecting buried faults?

先需要列清楚故障可能產(chǎn)生的原因及電纜的基本情況，例如是運(yùn)行產(chǎn)生故障還是預(yù)試產(chǎn)生故障，是新電纜還是運(yùn)行時(shí)間很長的電纜，電纜的大概長度，電纜中間有沒有接頭，電纜以前有沒有出現(xiàn)過故障，電纜是直埋還是在電纜溝鋪設(shè)，以及電纜類型等等。

First of all, it is necessary to list the possible causes of the fault and the basic situation of the cable, such as whether the fault is caused by operation or pre-test, whether it is a new cable or a cable that has been running for a long time, the approximate length of the cable, whether there is a joint in the middle of the cable, whether the cable has failed before, whether the cable is directly buried or laid in the cable trench, and the type of cable, etc.

測試人員須注意操作，每次與電纜接線前，將電纜各相線與地用短路線連接放電，放電時(shí)須先將短路線一端接地，另一端分別接電纜各相線放電。

The tester must pay attention to the safety of operation. Before each connection with the cable, connect each phase line of the cable to the ground with a short line for discharge. When discharging, one end of the short line must be grounded first, and the other end must be connected to each phase line of the cable for discharge.

對于其它電器，例如電容器，試驗(yàn)變壓器等，接線及去掉連接線前也要注意先放電接線?？傊纬刹僮髁?xí)慣，不怕麻煩，每次操作前，先注意操作電器有無與電路連接，先放電再操作。

For other electrical appliances, such as capacitors, test transformers, etc., pay attention to discharge wiring before wiring and removing the connecting wire. In short, we should form operating habits and be not afraid of trouble. Before each operation, we should first pay attention to whether the operating appliances are connected to the circuit, and then discharge before operation.

用高壓閃絡(luò)法測試時(shí)，不管電纜故障是高阻故障，還是低阻故障，均可用高壓沖閃法進(jìn)行測試。對于用低壓脈沖能夠直接測試出故障距離的低阻或斷線故障，一般也要用高壓沖閃進(jìn)行驗(yàn)證測試及故障點(diǎn)的精確定點(diǎn)。

When testing with high-voltage flashover method, whether the cable fault is high resistance fault or low resistance fault, the high-voltage flashover method can be used for testing. For the low resistance or broken line fault that can directly test the fault distance with low-voltage pulse, it is generally necessary to use high-voltage impulse to verify the test and the precise location of the fault point.

此外地埋探測進(jìn)行時(shí)，同一電纜溝內(nèi)其它電纜應(yīng)暫時(shí)斷電，測驗(yàn)端和被測電纜用戶端要有專人看守，用戶端電纜與室內(nèi)供電纜路要徹底別離，確保人身和用電電器。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://tianyals.cn詳細(xì)了解吧。

In addition, when the buried detection is carried out, other cables in the same cable trench should be temporarily powered off, the test end and the user end of the tested cable should be guarded by a specially assigned person, and the user end cable should be completely separated from the indoor power supply cable to ensure personal safety and the safety of electrical appliances. Come to our website for more relevant content http://tianyals.cn Learn more.