Reducing Wire-Down Incidents

It’s a fact, the frequency of downed power lines has been increasing, especially within the last few years as much of the equipment in many power grids enters the half century and older point. According to federal data, the U.S. electric grid loses power 285 percent more frequently than in 1984, when the data collection

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The Best Method For Repairing Overhead Connectors

This video shows a typical scenario using infrared inspection of an overhead transmission line to identify a hot splice and then the proper correction of that hot splice using a ClampStar engineered mechanical shunt. ClampStar, along with proactive maintenance practices improves safety and prevents unplanned outages. ClampStar is the industry’s only PERMANENT solution for protecting

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Can ClampStar® installations be budgeted as a Capital Expenditure?

Yes, because ClampStar® significantly reduces whole-span wire replacement cost and is the industry’s only PERMANENT life extension solution for virtually all overhead conductors of any voltage class, and ClampStar corrects, preserves, and maintains the electrical and mechanical integrity of new and weathered conductors, clamps, connectors, and structures to better-than-new condition. Sources: IRS clarifies capital improvement

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Classic Connectors USA introduces the new ClampStar® Repair Unit

The new ClampStar® Repair Unit quickly and easily corrects damaged conductor, great for gunshot or other types of damage on conductors sized from 2/0 – 1780 kcmil. After brushing the conductor, ClampStar is placed over the damaged area and is installed with only a nut driver. ClampStar, an engineered mechanical shunt is the industry’s only

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ESMO 2016 – The Demo You May Have Missed

If you attended the ESMO show in Columbus, Ohio 2 weeks ago then you may have seen a Haverfield aerial line crew performing some fantastic demonstrations. Click the image below to see a short video of a couple of their demonstrations. And for those of you who stopped by the ClampStar booth, “thank you!” We

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Here’s What To Do After Finding Hot Connectors

As the grid continues to age, many utilities are increasing connector inspection frequency with a main goal of preventing outages and wire down incidents. One simple and relatively inexpensive line inspection method utilizes Infrared (IR) technology. The above images were provided by a utility located in Pennsylvania. Image #1 in the IR photo below shows

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Many Utilities Ban The Use of Automatic Splices

There are estimated to be 250 million automatic splices installed on overhead power lines in North America. The majority of which were installed over 30 years ago. A variety of reports in the field indicate the service life of automatics is as short as five years up to, and perhaps surpassing 30 years. A recent

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Choosing the Right Fastener – Part ll

By Carl Tamm In the first part of this article, a brief mention was made regarding “conductivity” of fasteners.  This second section will address that issue. Peculiarities of electrical connectors give rise to further thought of fasteners.  It is not exceptionally difficult, using reasonable workmanship and materials, to make an electrical connection of reasonable conductivity

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Choosing the Right Fastener

By Waymon P. Goch With proper attention to the fastener assembly, the best choice is almost always fasteners of the same material as the components being joined. The primary reason is it eliminates differential thermal expansion and contraction, and just as important, since we are talking about electrical connectors, is that it will be conductive,

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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 bypasses the load by flowing directly to ground (earth) or by returning to

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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 that time). There are four additional currents that are of significance in the design, application,

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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 it is a high resistance connection.  Were

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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 arrester for a given application can be negated by poor installation practices. The length and

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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 prepare conductors quickly, efficiently and affordably.  Improper cleaning of conductor strands can result in higher resistance terminations

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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 structures receives a lot of publicity and attention but other failures that are primarily due

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