Appendices
EXCEL POWER SWITCHGEAR CHENNAI-32 BUSBAR CLEARANCE FOR
11KVSL
No ITEM REQUIREMENT
01C Spacing between the Bus bars i.e. live part to live part
spacing(PHASE TO PHASE)120 (mm)
Minimum
02Spacing between the Bus bars and earth (i.e) live part to
earth spacing(PHASE TO EARTH)120 (mm)
Minimum
BUSBAR CLEARANCE FOR 11KV WITH BBTM HEAT SHRINKABLE SLEEVESL
No ITEM REQUIREMENT
01C Spacing between the Bus bars i.e. live part to live part
spacing(PHASE TO PHASE)65 (mm)
Minimum
02Spacing between the Bus bars and earth (i.e) live part to
earth spacing(PHASE TO EARTH)75 (mm)
Minimum
BUSBAR CLEARANCE FOR 33KV
SL
No ITEM REQUIREMENT
01C Spacing between the Bus bars i.e. live part to live part
spacing(PHASE TO PHASE)320 (mm)
Minimum
02Spacing between the Bus bars and earth (i.e) live part to
earth spacing(PHASE TO EARTH)320 (mm)
Minimum
BUSBAR CLEARANCE FOR 33KV WITH BBTM HEAT SHRINKABLE SLEEVESL
No ITEM REQUIREMENT
01C Spacing between the Bus bars i.e. live part to live part
spacing(PHASE TO PHASE)200 (mm)
Minimum
02Spacing between the Bus bars and earth (i.e) live part to
earth spacing(PHASE TO EARTH)285 (mm)
Minimum
Ref: IEC 71-2
