Patent ID: 8300382

Claim:
A portable apparatus for voltage transformation capable of temporarily augmenting a power transformer, comprising: a transformer comprising a first medium voltage primary winding, a second medium voltage primary winding and a low voltage secondary winding; a plurality of medium voltage electrical power input couplings capable of temporarily coupling with medium voltage power; medium voltage circuit protection devices operatively coupled between the medium voltage electrical power input couplings and the first and second medium voltage primary windings of the transformer; an interlocked switch operatively coupled between the medium voltage electrical power input couplings and the first and second medium voltage primary windings of the transformer to selectably couple the medium voltage electrical power input couplings to the medium voltage primary windings of the transformer via the medium voltage circuit protection devices such that only one medium voltage primary winding of the transformer is coupled at a time to the medium voltage electrical power input couplings; and a low voltage circuit protection device operatively coupled to the low voltage secondary windings for providing low voltage power.