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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...

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