Overhead T&D

Distribution Protection

ArmorBuiltTM Wildfire Shield Proven Protection for Utility Poles

IntroductionIn November of 2018, the deadliest, most destructive wildfire in California history burned a total of 240 square miles, destroyed 18,804 structures and resulted in 85 civilian fatalities. Known as the Camp Fire, it devastated several communities including the towns of Paradise and...

Infrastructure & Technologies

Overhead T&D, Direct Current Technology

Direct current (DC) is the preferred technology for moving large amounts of power across long distances. DC results in overall higher efficiency and reliability than an equivalently-sized alternating current (AC) system moving the same amount of power. The Advantages of DC More efficient: Over long...

Overhead Distribution

Outage Management: Restore Power in Less Time

Improving power grid reliability is a major goal of the electric power industry and can reduce economic losses, lost productivity, and customer inconvenience from power disruptions. For several utilities, Smart Grid Investment Grant (SGIG) funding accelerated the application of fault location,...

Wire and Cable

Utility Proactively Tests Underground Cable

Distribution companies are continually looking for ways to improve system reliability, all while conserving capital investments and operational costs. With an aging infrastructure, one of the main issues that utilities face is a way to assess the actual condition of their capital assets. With...

Disaster & Recovery

Outage Management Review: When the Lights Go Out

The occurrence of severe weather events is on the rise at an alarming rate. According to the Insurance Bureau of Canada, extreme weather events that used to happen once every 40 years now occur as frequently as every six years in some regions; severe weather is expected to become even more frequent...

Underground Distribution

Safety in Underground Power Systems

Protecting utility personnel working below ground BY MIKE DOHERTY, PowerTel Utilities Contractors Limited "Safety” in “underground systems” has different connotations for different sectors depending on the tasks performed. “Qualified electrical workers” can have...

Home T&D Technologies Overhead T&D

Reducing Partial Vacuum Induced Flashovers in 25 kV Class Loadbreak Separable Connectors

The 25 kV Class 200 Ampere loadbreak separable insulated connector system didn't always have today's reputation for safety and reliability. As 25 kV Class loadbreak connectors increased in popularity in the 1980's and 1990's, utilities reported unacceptably high numbers of flashovers during energized switching operations. These line-to-ground faults were more likely to occur in colder weather, at higher altitudes, with lower load currents, and with stuck interfaces. The partial vacuum induced flashovers were not seen in 15 kV Class...

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