SERVICES FOR INSTALLATION OF 200 minus 100 MVA TRANSFORMER AT 220KV GSS BALOTRA SUCH AS ERECTION WORK DISMANTLING SHIFTING AIR DRYER AND OIL FILTRATION WORK

Laying of earth mesh with 25mm / 28mm dia. M.S. Rod at a depth of 0.80 metre from top level of foundations, including excavation of trench of required depth and backfilling of the same, transportation of M. S. Rods from site store to locations, welding of M. S. Rod to M. S. Rod along the length, at crossings and with earth electrodes as per drawing, application of bitumen compound and covering with bitumen impregnated tape on all welded joints, for the type of soil prevalent at 0.80 metre below top level of foundations (M. S. Rod of above sizes & M. S. Flat as required shall be made available by RVPN). a)In case electricity is made available by RVPN without charges i)Any soil,soft rock other than hard rock

Laying of earthing risers of 50x6mm / 50x10mm / 50x12mm size M.S.Flat at a depth of 0.80 meter from top level of foundations, Including excavation of trench of required depth and backfilling of the same, transportation of M.S.Flat from site store to location, preparation of risers, bending as per requirement (after heating if necessary), fixing on and welding / bolting to equipment / structure and peak of structures, laying in the trench, welding to the earth mesh of M.S. Rod as per drawing, including welding of extra length of M.S.Flat if required, application of bitumen compound and covering with bitumen impregnated tape on all welded joints, painting of all surface of risers above ground level with red oxide and green paint, for the type of soil prevalent at 0.80 meter below top level of foundations (M.S.Rod of above Sizes & M.S .Flat as required shall be made available by RVPN) a)In case electricity is made available by RVPN without charges i)Any soil, soft rock other than hard rock

Placing / Driving of earth electrode of 25 / 28mm dia M.S.Rod of Length 3.30 meters (approx) to a depth of 3.80 meters from the top level of foundation, including excavation of pit as required and back filling of the same, transportation of M. S. Rod from site store to locations, cutting of M.S.Rod to desired length, preparation of one end as spike if necessary, welding of earth electrode to earth mesh of M. S. Rod as per drawing, application of bitumen compound and covering with bitumen impregnated tape on all welded joints, for the type of soil prevalent at 3.80 meters below top level foundations (M.S.Rod of above sizes & M.S.Flat as required shall be made available by RVPN) a)In case electricity is made available by RVPN without charges. i)Any soil,soft rock other than hard rock

BUS- BAR WORK: STRINGING of 220 KV, 132 KV, 33 KV & 11KV Bus Bar of ACSR & Tarantulla conductor, including transportation of conductor, disc insulators and tension hardware from site stores to location, laying and cutting required length of conductor, cleaning and assembly of disc insulators as required along with fitting of bolted type or compression type tension hardware as made available, making up at one end, stringing of conductors between the beams with specified sag and tension, also equalizing sag and fitting spacers and spacer T-clamps for twin conductor, for three phases of conductors in each bus-section.(Per jumper basis) ii) Any Double Conductor

JUMPERS of any conductor ( 3 nos. Y- type) between bus to equipment. or between equipment to equipment or between bus to bus, including transportation of conductor, disc insulators and hardware from site stores to locations, cleaning and assembly of disc insulators as required along with fitting of suspension hardware and erection as required, cutting required length of conductor, making connections, fixing of spacers & spacer T-clamps as required, tightening of clamps / connectors, dressing, etc, for three phases. (Per jumper basis) i) Any Conductor

ERECTION OF SUB-STATION EQUIPMENTS: Erection of Current Transformer / Potential Transformer / Capacitive voltage Transformer / Series Reactor / Residual Voltage Transformer / Neutral Current Transformer with clamps & connectors on already erected steel structure including transportation from site store to location, fabrication of base frame, fixing of terminal connectors, tightening of nuts & bolts etc. complete in all respects. ii) 132 KV CT / PT / CVT

Erection of IsoIators (Motorised/Non motorised) on already erected steel structure including transportation of base frame, P. I.’s, contacts, mechanism box, clamps & connectors, etc. from site store to locations, minor fabrication as required, and fixing of terminal connectors, etc., adjustment/ alignment of isolator and its earth blade, if provided, for their smooth operation and final adjustment if required after jumpering including erection of PI i)220KV a)Without Earth blade

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Erection of IsoIators (Motorised/Non motorised) on already erected steel structure including transportation of base frame, P. I.’s, contacts, mechanism box, clamps & connectors, etc. from site store to locations, minor fabrication as required, and fixing of terminal connectors, etc., adjustment/ alignment of isolator and its earth blade, if provided, for their smooth operation and final adjustment if required after jumpering including erection of PI ii) 132KV a)Without Earth blade

f) Tandom