Testing

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...

Thermography 101

Thermography used to be expensive, difficult, and primarily used by large industrial facilities and the military. These days, it has become much more affordable, easier to use, and more broadly applied. A thermal imager works by producing thermal (heat) pictures of the equipment. Electrical...

Understanding the DC Overpotential Test

The 411 on DC testing of low-voltage circuit breakers BY JIM WHITE, Shermco Industries, Inc. The direct current (DC) overpotential test is one of the basic tests conducted to ensure an insulation system has adequate insulation life to make it to the next scheduled maintenance interval. While not...

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...

Wireless Measurement Systems

Conquering challenges with wireless measurement systems BY COLIN PLASTOW, Fluke Electronics Any type of manufacturing or industrial environment presents a number of challenges when taking measurements. Whether you need to check performance over time or run spot checks, there are many situations...

Safe Electrical Maintenance Checklist

Reduce the risk of arc flash hazards with CSA Z462 BY ROBERT BURGESS, Lineman’s Testing Laboratories Safe electrical maintenance practices and on-going personnel training can minimize the likelihood of electrical injuries and fatalities due to electrical shock, electrocution, arc flash and arc...

Home Testing

Testing

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 Articles

CSA Z462 and CSA Z463: A Powerful Combination

Vibro-Acoustic Diagnostics for OLTCs

T&D Buyer’s Guide Companies

Testing Videos

Testing Products

Testing Shared Media

Catalog

Intelligent Power Today Magazine

Testing & Maintenance

Strategies for Accurate Vibro-Acoustic Monitoring of OLTCs

Thermography 101

Understanding the DC Overpotential Test

A Closer Look into the True Cost of Replacing Electrical Switchgear

Wireless Measurement Systems

Safe Electrical Maintenance Checklist

Testing

Vacuum Interrupter Testing

Testing Articles

CSA Z462 and CSA Z463: A Powerful Combination

Vibro-Acoustic Diagnostics for OLTCs

T&D Buyer’s Guide Companies

Testing Videos

AreaMax: Utility-Grade LED Area Lighting

YGC MANUFACTURING

The Sediver Research Center English Version

Testing Products

OMICRON MONTESTO 200

Build-Your-Own Acorn, featuring OmniMax

MAGNETOTM

Testing Shared Media

OmniMax LED Replacement Lamp for Decorative Fixtures

Arc Flash Electrical Safety Handbook Vol.12

Intelligent Power Today Issue 1

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