Primary Cable Fault Locating
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Shipping weight: 0.75 pounds
This 24-minute DVD
describes common types of primary cable faults, their characteristics,
and how to test for each one. It covers equipment commonly used for fault
testing, a seven-step method for finding faults, and safe procedures to
follow when locating primary cable faults.
– 4 minutes
Describes and illustrates the characteristics of four types of faults:
Low resistance faults, high resistance faults, dead shorts (shunt faults),
and open faults.
– 6 minutes
This section covers nine pieces of equipment used to locate faults:
Fault indicators, hi-pot adapters, megohmmeters, time domain reflectometers
(TDRs), DC hipots, thumpers, burners, impulse detectors, and cable locators.
Method – 5 minutes
How to troubleshoot a faulted cable situation, determine the characteristics
of the faulted cable, de-energize the cable, and analyze the fault.
– 4 minutes
important to avoid excessive thumping of cables. How to set up a TDR
and use it to determine the distance to, and the nature of, low resistance,
open, and dead-short faults.
- Arc Reflection
– 5 minutes
faults can be difficult to locate. Sometimes it is easier to “burn”
the fault until it is a low resistance fault. This is not always an
ideal approach. The video offers the arc reflection method as an alternative.