Types and constitution of MV/LV distribution substations

MV/LV substations may be built in public places, such as parks, residential areas, etc. or in private premises. In this case the utility must have an unrestricted access to the substation. This is normally achieved by locating the substation in such a manner that one of the entrance can be directly accessible at any time from the public way.

Different types of substations

A substation may be installed:

• Indoor within a building, in a dedicated room
• Outdoor inside a dedicated housing prefabricated or not
• Outdoor without housing
• Pole mounted.