Patent Number: 6,166,531

Title: Three phase to single phase power protection system with multiple primaries and UPS capability

Abstract: This invention relates to methods of providing uninterruptible, regulated, single phase power to a critical single phase load when such power is derived from two of the phases of a polyphase power source. This invention describes a dual primary ferroresonant transformer which provides regulated and isolated voltage to a single phase critical load, when powered by a plurality of phases from a polyphase power source, and whereby a loss of electrical power to either a first or a second primary does not disturb the single phase power output voltage.

Inventors: Hogan; Michael W. (New Lisbon, WI), Jungwirth; Gary (Nekoosa, WI), Kamper; Teresa A. (Camp Douglas, WI), Kohls; Gregory C. (Nekoosa, WI)

Assignee: UPPI Corporation

International Classification: H01F 3/12 (20060101); H01F 3/00 (20060101); H01F 38/08 (20060101); H01F 30/14 (20060101); H01F 38/00 (20060101); H02J 9/00 (20060101); H01F 30/06 (20060101); H01F 030/12 ()

Expiration Date: 12/26/2017