Therefore, determine VOP by the same techniques used to find the fault. Test the cable from both ends. Change the VOP setting until the two measured distances equal the total length of the cable. You now have the correct VOP and the location of the fault. Then measure the bad conductors with this same VOP setting and find the distance to the fault.
Power cable is physically very large and obtaining a good connection can be difficult.
Making a good connection requires the technician to pay close attention to detail. It is best to keep the conductors as close together as possible to ensure a quality test. The latter technique allows the testing of the quality and integrity of the concentric neutral. A lot of time and energy is spent testing power cable with high voltage breakdown testers. This is time consuming, expensive for the equipment, and can actually damage the cable.