Patent ID: 8384371
Filing Date: 2013-02-26
Classification: H01F

Abstract:
1. A neutral deriving transformer incorporating a zig-zag transformer configuration, comprising: a zig-zag transformer providing an electrical load with a neutral wire, the zig-zag transformer electrically connected downstream of a main AC voltage step-down transformer and wherein three phase AC voltage lines are routed to the zig-zag transformer such that the zig-zag transformer comprises a neutral deriving transformer that electrically connects to a ground conductor that ties back to a ground for the main AC voltage step-down transformer but wherein the neutral deriving transformer does not electrically connect to a neutral conductor of the main AC voltage step-down transformer, wherein the zig-zag transformer phase shifts each winding by approximately wherein the zig-zag transformer is electrically connected into a building's power distribution system downstream of the building's main AC voltage step-down transformer's connection to an Electric Power Utility grid.