Patent ID: 8274349
Filing Date: 2012-09-25
Classification: H01F,H02J,H02M,H02P,Y02E

Abstract:
1. A tap-switching autotransformer adapted to be interposed between a utility power supply and a facility for regulating the voltage supplied to said facility comprising: an electronics sub-assembly for automatically controlling switching of the taps to control an output voltage from said autotransformer; a housing for holding said electronics sub-assembly and at least one winding; said electronics sub-assembly being removable from said housing for repair or replacement; said electronics sub-assembly being adapted to enable an electronically-actuated short-circuit between two of said taps; and, a mechanical by-pass switch enabling a mechanically-actuated short-circuit to be maintained between the taps, said mechanically-actuated short-circuit being separate from said electronically-actuated short-circuit, enabling said electronics sub-assembly to be safely removed from said housing.