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Henville Consulting

This article discusses the ambient temperature assumptions in transformer capability calculations and explores the potential use of mechanical winding temperature indicators (WTI) to supplement overload protection, especially in cold environments.

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Henville Consulting

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  1. Henville Consulting • What ambient temperature does NEMMCO assume when calculating the transformer capability before shedding load?

  2. Henville Consulting • Is there no mechanical winding temperature indicator (WTI) that could be used to supplement the current based overload protection? This could provide more transformer capability in cold ambient temperatures.

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