K-Factor Transformers

What is a K-Factor transformer?

In heavy industrial applications, transformers that have to handle non-linear loads generate harmonic currents which can cause serious damage to both the transformer and the equipment it’s connected to. Circuit breakers can blow far below their threshold, transformers can overheat and even panelboards can overheat. With that being said, K-Factor transformers safely supply non-linear loads. They are also able to withstand the stresses placed on the transformer’s winding insulation.

The K-Factor is essentially a measurement of the transformer’s ability to handle a harmonic-generating load in a given system. Each transformer will have a different K-Factor depending on the application, so the higher the K-Factor, the more significant the harmonic current. Commonly used K-Factor ratings include K-1, K-4, K-9, K-13, K-20, K-30, and K-40.

Popular K-Factor transformer uses.

K-Factor isolation transformers are commonly used across the following applications that produce heavy harmonics: office buildings, data processing centers, healthcare and education facilities, production lines, welding, and more. K-Factor transformers are an important facet of these applications since safety, productivity, and data are always on the line. Plus, by making sure you have the right K-Factor transformer, you will also save money in energy costs and potential damage costs.