: The interrupter chamber is arranged in the insulator, which can be either porcelain or of a composite material and is at high potential with the voltage level determining the length of the insulators for the interrupter chamber and the insulator column. It sometimes needs a re-insertion resistor.
2. Dead Tank Type
: The interrupter chamber is accommodated in an earthed metal housing.
3. Live Tank Type vs. Dead Tank Type
1) Location of switching unit
1.1) Dead-tank type: inside metallic container(earthed voltage) > cons
1.2) Live-tank type: inside insulator bushing(live voltage) >pros
2) Amount of SF6
2.1) Dead-tank type: 100% > cons
2.2) Live-tank type: 10~15% > pros
3) Seismic Capability
3.1) Dead-tank type: lower center of gravity > pros
3.2) Live-tank type: higher center of gravity > cons
4.1) Dead-tank type: Current Transformer can be located in bushings(BCT) > pros
4.2) Live-tank type: CT should be located separately > cons
