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How to check for underground cable faults?

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How to check for underground cable faults?


How to check for underground cable faults?

Finding buried cable faults is divided into 6 steps: 1. Determine the nature of the faulty cable; 2. Test the cable length; 3. Select the test method; 4. Find out the direction of the cable; 5. Accurately locate the fault point; 6. Analyze the test results .


1. Analyze the nature of cable faults and understand the type of faulty cables;

Different types of cable faults should be tested in different ways, and cables with different media have different test speeds. Cables with different withstand voltage levels have different withstand voltage requirements.


2. Use the low-voltage pulse method of the host to test the length of the cable and check the transmission speed of the cable;

The full length of the test cable can let us know more about the specific situation of the faulty cable, can judge whether it is a high-resistance or low-resistance fault, and can judge whether the inherent radio wave speed is accurate (accurate radio wave transmission speed is the guarantee for improving the test accuracy. When the speed is inaccurate When the speed can be reversed) these can be solved by the low-voltage pulse test method.


3. select the appropriate test method;

Use the mainframe of the cable fault tester to perform rough measurement of cable faults; low-resistance faults are measured by low-voltage pulse method, and high-resistance faults are measured by high-voltage flashover method.


4. Use the path meter to detect the direction of the buried cable;

Before setting the point, you must know the path of the cable. If the path is known, this step can be omitted.


5. Accurately locate the fault point with a pointing instrument;

Connect the high-voltage equipment according to the fixed-point discharge method, and determine the degree of boosting according to the nature of the cable and the withstand voltage level of the cable. Accurate detection of cable fault points.


6. Carry out error analysis on the cable fault test results, and make a record of the completion of the test.


A professional cable tester tool that many professionals have used:

How to check for underground cable faults?

Underground Cable Tester, Wire Tester Portable Locator Wire Tracker , Detecting Wall and Underground Cables, Electrical Lines, Gas and Water Supply Pipeline Path

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How to check for underground cable faults?

  • Detecting cables, electrical lines-water/gas supply pipelines buried in wall or earth

  • Detecting and Locating breaks and short circuit in cables and electrical lines buried in wall or underground.

  • How to check for underground cable faults?

  • Detecting the laid metal tap water pipe and metal heating pipe.

  • Detecting interruptions and short-circuits in floor heating.

  • How to check for underground cable faults?

  • Detecting fuses and assigning current circuits,tracing sockets and junction boxes having accidentally been covered by plastering.

  • How to check for underground cable faults?

  • The transmitter is integrated with the function of AC/DC voltmeter, which can measure 12 to 400V AC/DC voltage on a linear basis.

  • How to check for underground cable faults?

  • Our products are included in English, if you have any difficulties in use, you can contact us to solve it.

Brand NameLiang Fang Shen Qi
Ean0652069877675
Included ComponentsPCB
Measurement AccuracyGOOD
Measurement TypeVoltmeter
Number of Items1
Part NumberKC826
Power Source TypeGas Powered
UNSPSC Code41113600
UPC652069877675


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