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Talk to our expert certified thermographer.


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Flemming Lund in his arc protection suit performing infrared stator testing during heating via induction.

Infrared Diagnostic provides full thermographic service during rebuilds and repairs of hydro generators.

We’re located in the greater Boston, MA area, but our service area includes the U.S., Canada, and Europe. All thermographers are certified level III thermographers with extensive experience in infrared electric thermography.

Comprehensive Infrared Services

Thermographic stator core loop testing, also called interlamination insulation testing, is performed during heating the stator via induction from a mobile generator.

Infrared services may be single site inspections or multi-phase infrared inspections to evaluate pre-rebuild condition, after core loop removal and cleaning, and post rebuild infrared scanning prior to placing the stator back in service.

Imaging with High Resolution FLIR Technology

All infrared imaging is performed with high resolution FLIR T660 480x640 infrared camera. Both still infrared images and infrared video recording are all radiometric to allow for post-processing and detailed temperature evaluation.

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Above Images Show:

  • 200 megawatt stator infrared scanning after cleaning and winding removal

  • Infrared closeup of stator after cleaning and winding removal

  • Performing infrared stator testing during heating via induction

  • Infrared core loop testing of 24 foot diameter stator

  • Hot spot on stator during interlamination insulation test (core loop test)

  • Stator after cleaning and windings removed—labeled to locate issues during infrared core loop test

Need infrared core loop testing service? Call 978-440-9900 or contact us to get in touch!