Switching arrangement for transformer windings

G - Physics – 05 – F

Patent

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323/31

G05F 3/00 (2006.01) H01F 29/02 (2006.01)

Patent

CA 1068340

ABSTRACT OF THE DISCLOSURE In a three-phase, dual-voltage electro- magnetic induction apparatus wherein each phase has a primary winding and a secondary winding, and each phase of the primary winding comprises two separate and distinct windings, a switching arrangement com- prising tap changers for connecting said distinct windings in either a series or a parallel connection so as to alter the voltage rating of the primary winding between a first level and a second level. These same tap changers also function to provide the "fine" adjustment of the voltage rating that tap changers are normally noted for.

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