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Infrared Thermography 

Infrared Thermography, or IR Scanning, is a noninvasive substation inspection technique. It uses a thermal imaging camera to detect high levels of heat—one of your transformer’s top three enemies—emitted in the form of infrared radiation. The camera can also identify cold spots that should be hot, which could indicate a problem. Early fault detection helps prevent permanent damage to your transformer, switchgear, and other substation equipment, as well as the unplanned downtime that comes with it.

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Heat is one of the transformer's top enemies

Infrared thermography detects heat signatures and thermal anomalies in your transformers and substation equipment that visual inspection and oil testing alone can't catch. Small temperature variations can signal loose connections, cooling failures, overloaded circuits, and emerging faults — long before they cause outages, fires, or safety events.

 

Combined with oil analysis and visual inspection data, IR scanning gives you a complete, correlated picture of your fleet's health — and the confidence to act on it.

 

What IR Scanning Can Detect:

  • Overloading and unbalanced loads

  • Low liquid levels

  • Cooling system and radiator defects

  • Oil circulation issues

  • Malfunctioning temperature or level gauges

  • Hot spots on tanks, bushings, and connections

  • Load tap changer (LTC) and no-load tap changer (NLTC) issues

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