supply feeder stations

[Allica2001]

Пожалуйста, помогите перевести.
supply feeder stations
Выражение встречается в следующем контексте:
GEAFOL cast-resin transformers are particularly suitable for applications where fi re or ground-water regulations would involve additional expense if liquid-immersed transformers were used, e.g. in department stores, under&ground railways, sports stadiums and meeting halls, pumping stations and water catchment areas. They are also being used more frequently in industrial applications for load center substations and supply feeder stations because, with cast-resin transformers, there are no civil works costs for oil catch pits and fi re protection.
Заранее спасибо