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Article of the Month:
Gregory R. Stockton, President
Stockton Infrared Thermographic Services, Inc. & United Infrared, Inc.
Eleven years ago, the author published “NOT the low hanging fruit of Infrared Thermography” – a white paper discussing why thermographers should explore the many other upcoming applications for infrared…other than the electrical application. Since then, many changes have occurred in the world of infrared (IR) and particularly in electrical infrared…most of them good. To date, IR testing of switchgear remains the most popular infrared application.
This paper discusses the market forces, insurance requirements, government regulations and risk management thinking that are changing the electrical testing industry in general, and the electrical infrared testing application in particular.
Traditionally, many facilities perform infrared inspections on an annual basis. While this approach may detect deficiencies within operating systems, systems not under load due to seasonal or operational conditions cannot be effectively inspected.
Thermal image shows a hotspot on the right tap of a dry-type transformer caused by a loose connection. Infrared inspection conducted with the transformer under load and its panel covers removed to afford line-of-sight access. Taken by Larry Stratton, this thermal image was the 1st Place winner - Electrical Category in the annual Image Contest held during the IR/INFO 2017 Conference.