20251201 08245700 1.0 TRUE DATA.Substation Distribution stations include primary feeders (medium voltage cables), transformers and Low voltage feeders (overhead or underground) that serve a specified area. Distribution substations operate at 11 to 33 kV and usually have a number of three-phase feeders off which branch lines, or low voltage cables are tapped to deliver power to residences, stores, garages, and other loads.