Patent ID: 7636233

Claim:
A compartmental transformer including a first compartment housing first equipment and a second compartment housing second equipment, the first compartment having a first compartment door, which selectively closes, to cover a first compartment opening for enclosing the first compartment, the second compartment having a second compartment door, which selectively closes, to cover a second compartment opening for enclosing the second compartment, the compartmental transformer comprising: a primary winding electrically coupled to the first equipment and generating a first voltage level; a secondary winding electrically coupled to the second equipment for providing a second voltage level, different from the first voltage level; a housing including first and second walls forming respectively different sides of the compartmental transformer and facing respectively different directions; and a maintenance compartment to house a plurality of maintenance devices for monitoring and/or servicing the compartmental transformer, the maintenance compartment being located on the first wall of the compartmental transformer and having a maintenance compartment door, which selectively closes, to cover a maintenance compartment opening for separately enclosing the maintenance compartment from the first and second compartments, the first and second compartments being located on the second wall of the compartmental transformer, the maintenance compartment opening facing a different direction than either the first or second compartment openings, wherein the maintenance compartment is physically separated from the first and second compartments, and at least one of the plurality of maintenance devices is monitored and/or serviced at a time the primary and secondary windings of the compartmental transformer are energized.