The type Per keys out of the tank, transformer and medium voltage SF6 gas chamber is located. These positions are better than other forms of protection is electric.
Advantages
1 ) Requires less space for installation
2 ) Protection and maneuver capabilities for automation
3 ) Reduced cabling and external connections
4 ) The time installation
5 ) Ease of transport
6 ) Voltage up to 33 kV
7 ) Power range up to 1600 kVA
8 ) Reduce costs compared to traditional substations
9 ) Reduce maintenance and periodic service
10 ) Increase operator safety in accessing live parts
11 ) Automation capabilities