supply , installation and commissioning of 15 nos . of split type air conditioning system at 220kv substation , orkkatteri , supply , installation and commissioning of bluetar / voltas / daikin / toshiba make 15 nos . split air conditioning system at 220kv substation , orkatteri , supply , installation and commissioning of 15 nos . blue star / voltas / daikin / toshiba make ( 2tr 3star rated split air conditioner system 230v , 50hz , 1phase , 1800-2100watts , 24000btu / hr , rotary type , refrigerant r22 / r32 / r410 with copper condensing coils including 3mtr copper pipe for refrigeration and 3mtr communication cable ) split air conditioning system at 220kv substation , orkatteri ( including the cost of 5kva stabilizer , floors stand type / wall mount type outdoor clamp , copper pipe with sleeve total 38mtr in excess of 3x15mtr , communication cable 50mtr in excess of 3x15mtr , dismantling charges for existing 7nos . cassete type ac unit and covering the old ac removed area , less buy back price of existing 7nos . blue star make cassette type ac )