A Power Distribution Center (PDC) is a prefabricated, modular, skid-mounted enclosure for switchgear and auxiliary equipment. As a self-contained unit, it is completely coordinated, assembled and tested in a controlled factory environment. Primary switchgear and control applications include low and/or medium voltage switchgear and motor control center enclosures; relay panel enclosures; and RTU and SCADA enclosures. With integral transformers close-coupled to switchgear or with bus duct connections, a PDC can serve as a complete, enclosed unit substation.
Typically a PDC is provided with station electric service that includes a panelboard, interior and exterior lighting, power outlets and appropriate HVAC systems. A PDC can also include a battery and charging system, emergency equipment (eyewash fountains, fire suppression systems, etc.), and convenience facilities (work areas, toilets, etc.).