Augmentation work of 220/132kV, 100MVA Transformer at 220kV GSS, RVPN, Gajner

Laying of earthmesh with 25 mm. / 28mm. MS at a depthof 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 & with earth electrodes as per drawings, application of bitumen compound & covering with bitumen impregnated tape on all welded joints, 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

Laying of erthing risers of 50 x 6mm /50X10 mm /50X12 mm. Size M.S. Flat at a depth of 0.80 metre from top level of foundations, including excavation of trench of requiored depth & backfilling of the same, transportation of M.S. Flat from site store to locations, preparation of risers, bending as per requirement (after heating if necessary), fixing on and welding / bolting to equipment / structure & peaks 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 surfaces 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

(i)Placing of earth electrode of 25/28 mm dia. M.S.Rod of length 7.50 mtr. (approx) to a depth of 8.00 mtr. From the Top level of foundation in already bored hole,including back filling of pit with Bentonite slurry (with cost of Bentonite slurry), including its preparation transportation of M.S. Rod and bentonite from site store to locaton ,cutting of M.S. Rod to desired length welding of earth electrod to earth mesh of M.S. Rod as per drawing ,application of bitumen compound and covering with bitumen impregnated tape on all welded joints (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 & equipment structures (excluding Circuit breakers & 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 & preparing for grouting as required, but excluding grouting, erection after grouting and tightening & punching of nuts & bolts. (Maximum height of structures up to 20 meters)

Stringing of 220 KV, 132 KV, 33KV, 11KV busbar of ACSR conductor , including transportation of conductor, disc insulators and tenssion hardware from site store 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 (compression machine shall be provided by RVPN on rent free basis), 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.

i) Any Single Conductor

ii) Any Double Conductor

Jumpers of ACSR conductor (three 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 store 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

Stringing of earth wire (size 7/3.15 mm or 7/4.00 mm), including transportation of earth wire , tenssion hardware 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 earth wire.

Erection of 220KV current transformer /Potential transformer /Capacitive voltege Transformer/Series reactor/Residuel voltage Transformer /Neutral Current Transformer with clamps & connectors ,On already erected steel structure including transportation from site store to locations, febrication of base frame,fixing of terminal connectors, tightening of nuts & bolts etc. complete in all respects. (iii)33 KV CT/PT/CVT

Erection of 132KV current transformer /Potential transformer /Capacitive voltege Transformer/Series reactor/Residuel voltage Transformer /Neutral Current Transformer with clamps & connectors ,On already erected steel structure including transportation from site store to locations, febrication of base frame,fixing of terminal connectors, tightening of nuts & bolts etc. complete in all respects. (iii)33 KV CT/PT/CVT

Erection of 220KV Lightning Arrestor on already erected steel structure including transportation of LA , clamps and connectros, surge counter etc. from site store to locations, fabrication of base frame , fixing of terminal connectors, surge counter, tighting of nuts & bolts etc. complete in all respect. (iii) 33 KV

Erection of 132KV Lightning Arrestor on already erected steel structure including transportation of LA , clamps and connectros, surge counter etc. from site store to locations, fabrication of base frame , fixing of terminal connectors, surge counter, tighting of nuts & bolts etc. complete in all respect. (iii) 33 KV

Erection of isolators (Motorised/Non motorised) on already erected steel structure including transportation of base frame, PI's, contects, mechnism box, clamps and conectors 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 of erection of PI ii) 220 KV a) With out Earth blade

Erection of isolators (Motorised/Non motorised) on already erected steel structure including transportation of base frame, PI's, contects, mechnism box, clamps and conectors 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 of erection of PI ii) 220 KV a) Tandom

Erection of isolators (Motorised/Non motorised) on already erected steel structure including transportation of base frame, PI's, contects, mechnism box, clamps and conectors 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 of erection of PI ii) 132 KV a) With out Earth blade

Erection of 220 KV Circuit Breakers,including transportation of equipment ,structure members nuts & bolts ,clamps & connectors ,accessories etc. from site store to locations ,assembly of support structure , their placing of foundation, levelling & preparingfor grounting as required , but excluding grouting, assembly / placing of support columns /poles,mechanism box /control cabicle and other accessories as per manufecturer's drawings, fitting of SF6 gas pipeline febrication of air / oil pipeline as required, electrical wiring from pole to control cubicle. fixing of terminal connectors as required, but excluding commisioning of CB, for all types of operating mechanism as required.

Erection of 132 KV Circuit Breakers,including transportation of equipment ,structure members nuts & bolts ,clamps & connectors ,accessories etc. from site store to locations ,assembly of support structure , their placing of foundation, levelling & preparingfor grounting as required , but excluding grouting, assembly / placing of support columns /poles,mechanism box /control cabicle and other accessories as per manufecturer's drawings, fitting of SF6 gas pipeline febrication of air / oil pipeline as required, electrical wiring from pole to control cubicle. fixing of terminal connectors as required, but excluding commisioning of CB, for all types of operating mechanism as required.

Erection of Post Insulators on already erected structures including transportation of P. I. ’s, nuts & bolts, clamps & connectors, etc. from site store to locations, fabrication of base frame & assembly if required, fixing of clamps, etc. (i)220KV

Erection of 220 KV Class EHV Transformer (gas tank already placed on foundation with wheels), including transportation of accessories from site store to locations, erection of HV, LV, & Neutral bushings, main & OLTC conservators, radiators, equalizing pipe line, marshalling kiosk, etc. as per manufacturer's drawing, preparation of oil, oil filling, dehydration of transformer (filter machine , oil tank & operating staff shall be provided by RVPN), electrical wiring from individual equipment , e.g. Buchholz relay, MOG, OSR , etc. to marshalling koisk, etc. but excluding testing & commiussioning of transformer. a) If electricity is available & arranged by RVPN without charges. i)Transformer Received oil filled

Erection of control & Relay Panels complete in all respects including transportation from site store to control room, placing on foundation / cable trench as per layout, interconnection between control & relay panels and with existing panels, fixing of side / top covers and doors, earthing to existing earth strip in control room, connection of bus wiring to existing panel and between control & relay panel as required iii) Simplex Panel, DC Panel, RTCC Panel,PTCC Panel etc.

Erection of control & Relay Panels complete in all respects including transportation from site store to control room, placing on foundation / cable trench as per layout, interconnection between control & relay panels and with existing panels, fixing of side / top covers and doors, earthing to existing earth strip in control room, connection of bus wiring to existing panel and between control & relay panel as required (i)Duplex Panel

Erection of Marshalling Kiosk/ Line matching unit(LMU) / Line matching & Distribution unit (LMDU) complete in all respect including transportation from site store to locations, placing on foundation / cable trench as per layout, preparing for grouting of foundation bolts but excluding grouting etc. i) 220/132 KV Marshalling kiosk

i) Laying of PVC insulated unarmoured / armoured control cables of 1.1 KV grade with copper conductor in cable trenchs as per specification as required, including transportation of cable drums from site store to locations, laying in cable trenches, cutting to required length, placing them on cable racks / cable trays / cable batten & dressing, including removing and re-fixing trench covers as required, making necessary connections, testing, cable marking on both the terminating ends, etc. as required for all sizes from 2c x 2.5 sq.mm. to 20c x 2.5 sq.mm. , 4c x 4 sq.mm. & 4c x 6 sq.mm. a) Unarmoured control cable

ii) fixing of control cables in position with single compression nickel plated brass cable glands confirming to IS: 12943 & having three matal washers & one rubber ring including preparation of cable & drilling of corresponding holes in gland plates etc. as required and including post of cable glands, for each cable gland of size. a)19 mm unarmoured control cable

ii) fixing of control cables in position with single compression nickel plated brass cable glands confirming to IS: 12943 & having three matal washers & one rubber ring including preparation of cable & drilling of corresponding holes in gland plates etc. as required and including post of cable glands, for each cable gland of size. b)25 mm unarmoured control cable

ii) fixing of control cables in position with single compression nickel plated brass cable glands confirming to IS: 12943 & having three matal washers & one rubber ring including preparation of cable & drilling of corresponding holes in gland plates etc. as required and including post of cable glands, for each cable gland of size. c)32 mm unarmoured control cable

iii) Termination of wires of cables with copper coductor using copper terminal ends (pin or ring type as required of Dowell's or equivalent make as approved by the Engineer - incharge) duly drimped with crimping tool, including making wire ends ready for crimping, ferruling & dressing of wires, etc. as required, including cost of terminal ends for all wires, for each cable at both ends for cables of the following sizes. a) 2.5 sq.mm for any number of core

iii) Termination of wires of cables with copper coductor using copper terminal ends (pin or ring type as required of Dowell's or equivalent make as approved by the Engineer - incharge) duly drimped with crimping tool, including making wire ends ready for crimping, ferruling & dressing of wires, etc. as required, including cost of terminal ends for all wires, for each cable at both ends for cables of the following sizes. b) 4 sq.mm for any number of core