AUGMENTATION WORK OF 220 132 kV 200 MVA POWER TRANSFORMER IN PLACE OF 100 MVA TRF AT 220 KV GSS DAUSA

Laying of earth mesh with 25mm / 28mm dia M.S. Rod at a depth of 0.80 metre from top level of foundation, including excavation of trench of required depth and backfilling of the same, transportation of M.S. Rods from site store to location, 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 metre from top level of foundations, including excavation of trench of required depth and back filling of the same, transportation of M.S. Flat from site store to locations, preparation of risers, bending as per reqiurement (after heating if necessary), fixing on & belding / bolting of equipment / structure & peaks of structure, laying in the trench, welding to 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 surfaces of risers above ground level with red oxide and green paint, 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

Placing / Driving of earth electrode of 25 / 28mm dia. M.S. Rod of length 3.30 metres (approx.) to a depth of 3.80 metres from the top level of foundations, including excavation of pit as required and back filling of the same, transportation of M.S. Rod from site store locations, cutting of M.S. Rod to desire length, preparation of one end as 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 mtrs 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

ERECTION OF SUB-STATION STEEL STRUCTURES columns, beams, lighting mast and equipment structures (excluding Circuit Breakers and Capacitor Banks) of all types including transportation of structure members, nuts & bolts, washers etc from site store to locations, their assembly, placing on foundation, fixing of template, with foundation bolts as required, levelling and preparing for grouting as required, but excluding grouting, erection after grouting and tightening & punching of nuts & bolts. (Maximum height of structures up to 20 metres)

STRINGING of 220KV, 132KV, 33KV & 11KV Bus Bar of ACSR & Tarantulla conductor including transportation of conductor, disc insulator & tension hardware from site store to location, laying & cutting required length of conductor, cleaning & assembly of disc insulators as required along with fitting of bolted type or compression type tension hardware as made available between the beams with specified sag and tension, also equilising sag and fitting spacers and spacer T-clamps for twin conductor for three phase of conductors in each sub-section.(Per jumper basis) i) Any Single Conductor

STRINGING of 220KV, 132KV, 33KV & 11KV Bus Bar of ACSR & Tarantulla conductor including transportation of conductor, disc insulator & tension hardware from site store to location, laying & cutting required length of conductor, cleaning & assembly of disc insulators as required along with fitting of bolted type or compression type tension hardware as made available between the beams with specified sag and tension, also equilising sag and fitting spacers and spacer T-clamps for twin conductor for three phase of conductors in each sub-section.(Per jumper basis) i) Any Double Conductor

JUMPERS of ACSR 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 & assembly of disc insulators as required along with fitting of suspension hardware and erection as required length of conductor, making connections, fixing of spacers & spacer T-clampsas required, tightening of clamps / connectors, dressing etc., for three phases.(Per jumper basis)

STRINGING of earth wire (size 7/3.15 mm or 7/4.00 mm) including transportation of earth wire, tension hardwares etc from site store to locations, laying and cutting required length of earth wire, fitting of bolted type or compression type hardware as made available (compression machine shall be provided by RVPN on rent free basis) making up at one end, stringing of earthwire between structure peaks with specified sag and tension, jumpering and connecting earth bonds for single earthwire.

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 locations, fabrication of base frame, fixing of terminal connectors, tightening of nuts & bolts etc, complete in all respects. ii) 220KV CT / PT / CVT

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 locations, fabrication of base frame, fixing of terminal connectors, tightening of nuts & bolts etc, complete in all respects. iii)132 KV CT/PT/CVT