10 Basic Difference Between Indoor and Outdoor Substations

Sr. No.	Outdoor Substation	Indoor Substation
1.	The outdoor substations place outside the building.	Generally, the indoor substations place inside the building.
2.	There is a large reduction of civil construction work.	Civil construction work requires a bit more.
3.	The amount of space required is more.	The amount of space required is less.
4.	Completion time will be reduced.	Completion time will be more.
5.	It’s simple to find faults.	This operation is more difficult due to the enclosed equipment.
6.	The cost of installing switch gear and equipment is less.	The cost of installing switch gear and equipment is higher.
7.	Because there is more space, the possibility of accidents occurring is minimised.	Because of the limited space, there is a higher possibility of fault and accidents.
8.	The amount of time required for erection is reduced.	The amount of time required for erection is much greater.
9.	Substations located outdoors are not much safer.	Indoor substations are much safer than outdoor substations.
10.	An example of an Outdoor type substation is the grid substation.	An example of an indoor type substation is a distribution substation.