Example of Indoor substations

Requirements on Substations from neighbors• Open air substation not so nice aesthetic,want power without seeing it• Originally outskirt of city, now surroundedby residential buildings, offices, shoppingcenters, hotels etc.• Acoustic problem from humming of powertransformers• Third party safety, especially childrenplaying• Station modularized and as much aspossible pre-manufactured• No substation fence and yard, buildingitself give the “shell” protection• Underground-in and underground-out, i.e.cable to first line tower in case of OH-linebays• Site work as little and short as possible,saves cost, shorten overall delivery timeand minimize disturbance to neighborsduring site activities© ABB GroupNovember 13, 2009 | Slide 4