uprate power line

Fault Current and the Effects on ClampStar®

By Waymon Goch The terms fault and short circuit in electric power systems are frequently used interchangeably but there are slight differences. A fault can be defined as any abnormal flow of current whereas a short circuit is a current that completely…


Corona, RIV/TVI Testing Complete

By Carl R. Tamm If your concept of corona is that it is commonly consumed with a slice of lime, you might wish to read a bit more about issues in our industry that differ slightly from that concept! Fair weather radio and television interference (RIV and…


Important Facts You Need To Know About Surge Arrester Currents

Surge Arrester Currents By Waymon P. Goch Discharge current is the surge current that flows through a surge arrester during discharge of an overvoltage surge (and discharge voltage is the voltage that appears across the terminals of an arrester during…


Problem Connectors on Multiple Sub-Conductors

By Carl R. Tamm If you have a line with two or more sub-conductors per phase, and during an infrared inspection, a scenario is found where one of the sub-conductors has a fitting that is hotter than the one next to it, the natural tendency is to assume…


Surge Arrester Lead Length Revisited

By Waymon P. Goch Surge arrester manufacturers always recommend that line and ground leads be as short and straight as possible in all surge arrester applications. Why? The primary reason is inductive surge impedance. The selection of the best surge…