shunt

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…


Avoiding Splice Failures

By Lisa Nelson, EDM International, Inc. One of the primary root causes for splicing failures is poor cleaning of aluminum strands prior to compression.   The Electric Power Research Institute has developed technology that enables line crews to properly…


Corrosion and Splices

By Waymon P. Goch Worldwide, the annual cost of corrosion is $2.2 trillion (US); and is currently estimated to be $429 billion (US) annually in the United States.(1) Corrosion that results in failure of aircraft, pipelines, bridges and other critical…


Do You Change the Tires on the Family Auto?

By, Carl Tamm Most of us gray haired guys well remember the advent of radial belted tires!  There was significant skepticism initially, as some of the early models wound up with bulging “pump knots” on the sidewalls, but eventually the problems were…


The Truth About Infrared Inspections

Hangin’ Your Repairs on Temperature? By, Kimberly Lewis HOT/SHOT Infrared Inspections, Inc. Infrared technology has been heavily utilized by the utility industry for over 30 years and yet it is still vastly misunderstood.  In a perfect world,…


Connectors - The Weak Link

When considering increased conductor temperatures, numerous issues are of concern, particularly with the dynamic effects on electrical connectors when suspended overhead aluminum conductors are operated at high temperatures, specifically above 93°C…


Alabama Power Repairs Hot Splice In 8 Minutes and 23 seconds!

Following annual line surveys at Alabama Power, with the discovery of some hot (aged) splices found with IR Thermography, a decision was made to utilize the advantage of a helicopter to quickly and efficiently install ClampStar units over the hot splices…


SMUD Uses Helicopter to Install ClampStar Unit After IR Inspection Identifies Hot Splice

Jim Wilhelm, Tower Patrol T&D Assets, Distribution Services Lineman for Sacramento Municipal Utility District said “Installation was difficult due to the movement of the helicopter, but allowed us to do this over a deep gorge, not accessible from a…


New "CSS" Style ClampStar

Due to popular demand, CCI has developed the New “CSS” style ClampStar units for use on Deadends and Suspension Clamp applications!  Made with a single conductor leg, the new unit installs in minutes, the same as the traditional ClampStar units that are…


Line Crews Repair Failing Splices with No Power Interruption!

May 01, 2010, Transmission & Distribution World, By Mike Dario, Los Angeles Department of Water and Power Corrosive salt water and high winds in Los Angeles' beach areas were wreaking havoc on the Los Angeles Department of Water and Power's automatic…