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What is K factor and what does it mean regarding transformers?

Published date: 10 June 2020

What is K factor and what does it mean regarding transformers?

Product Line:

Class 7400 low voltage transformers

Application, features

K-factor is a weighting of the harmonic load currents according to their effects on transformer heating, as derived from ANSI/IEEE C57.110. The higher the K-factor, the greater the harmonic heating effects. 

There are many different loads such as computers, solidstate devices and motors which cause a non linear load. These type of loads generate harmonic currents that cause transformers and system neutrals to overheat, which can destroy the transformer.

When a non-linear load is supplied from a transformer,   K-factor transformers withstand the heating effects of harmonic currents created by these type of loads.

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