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Testing & Maintenance


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...

Transformer Testing & Maintenance

Vibro-Acoustic Diagnostics for OLTCs

On-load tap changers (OLTCs) are crucial components within power transformers, enabling voltage regulation while the transformer remains energized. Maintaining the health of OLTCs is essential for ensuring grid reliability and efficient power delivery. Traditionally, diagnosing potential problems...

CSA Z462 and CSA Z463: A Powerful Combination

I recently viewed a destroyed 600-volt electrical panel board that had exploded when an operator reset an 800-ampere (A) breaker. His leather-palmed gloves had synthetic backs that ignited and seriously burned the back of his hands. His flame-resistant (FR) shirt was untucked and he was burned on...

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...

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...

Testing

Thermography Best Practices

Providing continuous electrical high quality power is an ongoing challenge. Many industries must have continuous, uninterrupted quality power to ensure production levels are maintained and the integrity of their computer systems are at their peak levels. Furthermore, many buildings such as hospitals must have continuous, reliable power to ensure life-critical devices are running in operating and intensive care rooms. This formidable task can be partially achieved with proper maintenance practices.

There are many maintenance tools,...

Testing Articles