Federal Pacific K-Factor Transformers - Standard K-Factor ratings of 1, 4, 9, 13, 20, 30, 40, and 50 has been established by the Underwriters Laboratories.  They are typically used where anticipated loads include nonlinear power supplies. Although the harmonic distortion is not removed from the system, they handle the added current and heating effects that are resulted from nonlinear loads.

Federal Pacific K-Factor Transformer Web Sites:
Power Transformer Co: Federal Pacific K-Factor Transformers - This site offers detailed information about Federal Pacific K-Factor Transformers and the variety of applications they are used for.  It also provides the  tools to help calculate the right size transformer, and the various features and benefits that are offered.

Power Transformer Co: Federal Pacific Transformers -
A company who shows their commitment to customers by sticking to their motto "Power to Deliver".  They have been doing business this way for years with superior inventory, excellent customer service and broad distribution.  Click on the link to find out more about the quality products they offer.

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Federal Pacific Transformers -
A manufacturing company that has been in business for 45 years.  "Power to deliver" describes their dedication to having you as a customer for life. They do this by having a wide variety of quality standard and custom products to choose from.