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Testing & Maintenance Standards

A Closer Look into the True Cost of Replacing Electrical Switchgear

During my switchgear modernization presentations all over the US, I am constantly reminded of the concerns customers face with their aging electrical infrastructure. For the most part, these center around safety, reliability and productivity: Replacements parts are very hard (or impossible) to...

Transformer Testing & Maintenance

Strategies for Accurate Vibro-Acoustic Monitoring of OLTCs

Vibro-acoustic diagnostics have emerged as a rapid and non-invasive method to monitor and assess the health of On Load Tap Changers (OLTCs) in electrical power systems. This technology detects and analyzes the vibrations and sound patterns generated by OLTCs during operation, helping to identify...
Home Testing Testing & Maintenance

Testing & Maintenance

Vacuum Interrupter Testing

Predicting remainder of field life finally becomes easier

BY FINLEY LEDBETTER, Group CBS

Vacuum interrupters (VIs) have widely replaced older air-magnetic and oil interrupters for circuit breakers rated at one kilovolt (kV) or higher. These devices offer up to 10 times the expected lifetime than newer SF6 (sulfur hexafluoride) gas interrupters.

Unfortunately, nothing lasts forever. Manufacturers predict that most of their interrupters have a service life of 20 years; however, users generally ignore this fact....

Testing & Maintenance Articles

T&D Buyer’s Guide Companies

Testing & Maintenance Videos

ELECTROTM Overview

The Sediver Research Center English Version

About Dynamic Ratings

Testing & Maintenance Products

All Purpose Work Gloves

MAGNETOTM

Line Guard: Prevents Crawling Animals from Reaching Overhead Assets

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Environmentally Sound for Natural Ester-Based Fluids & FR3

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2020 ON-SITE ELECTRICAL TRAINING CATALOG

Catalog

Electrical Safety and Arc Flash Handbook Vol. 3