Power Cable Fault Finder

Finding the type of a fault in underground cables using a megger should not be a difficult task.

Power cable fault finder.

Cable fault finding guide. Sunbelt rentals offers competitively priced cable detectors. Cable faults can be easily located if a sound cable runs along with the grounded cables. Two of the popular techniques are the murray and varley loop tests for locating faults in underground cables this article explains about few other popular techniques for locating faults in underground cables viz.

Loop tests to finding cable faults. But finding the exact location of the cable fault needs special techniques. Loop tests for locating faults in underground cables edit in addition to pulse reflection method and transient method there are two popular loop tests for finding the location of faults in underground cables. Following are the types of loop tests.

Sophisticated methods that reduce the stress on insulation systems. However you should understand that there is no single method or combination of methods that is best. There are many locating methods coupled with new detection technologies that make this task much easier and less time consuming. Ieee 400 specifies that the hi pot voltage for a 15 kv class cable is 56 kv for an acceptance test and 46 kv for a maintenance test ansi ieee std.

Finding the location of an underground cable fault doesn t have to be like finding a needle in a haystack. For further resources why not check out our video support library and our electrical testing electrical safety blog. These kinds of tests are carried out on short circuit faults or earth fault in underground cables. Use our underground cable locator rental to locate buried cables.

In cable identification the faulty cables are identified from the fault free cables at the already determined site. Cable fault on two cables. A common approach to test cable and determine insulation integrity is to use a hi pot test in a hi pot test a dc voltage is applied for 5 to 15 min. It offers a 33 kv ac peak vlf output vlf cable burn mode and a 760 j discharge output up to 13 kv.

The vt 33 is the world s only combination vlf hipot and cable fault locator or thumper. We ve assembled helpful technical guides on cable testing and cable fault location from leading manufacturers in the field if you are looking for something specific don t hesitate to contact us. Power cable fault locating and testing takes on a whole new dimension with the modular cable fault locating concept from megger.