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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...

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 contractors typically use thermal imagers for predictive maintenance and troubleshooting, and sometimes during installation. For predictive maintenance, the contractor takes thermal images of key units (panels, drives, and motors) at least...

Testing & Maintenance Articles