REPAIR / MAINT OF DISTR TRANSFORMERS, ELECTRICAL DISTR SYSTEM, VCBS, RMUS AND OTHER ALLIED WKS AT INS EKSILA UNDER AGE E/M NO-III OF GE(U-I) VISAKHAPATNAM

Amount

NOTES / INSTRUCTIONS FOR STRICT COMPLIANCE :- (a) The contractor shall obtain sample approval for all materials incorporating in the work as per condition 10 of IAFW-2249 and Special Condition 11 of tender document mentioned here-in-after. (b) The Engineer-in-charge may direct the contractor in writing to procure and deposit up to 50% quantity of the material with in 30 days from the date of commencment as required at site out of quantity to complete the scope of work. Remaining 50% shall be procured as per site requirement during progress of work.The decision shall be final and binding on the contractor. (c) The contractor shall deposit the procured material to the store of concerned subdivision within 30 days from the receipt of written direction. Failing which contractor shall liable to pay a penal recovery of Rs. 5000/- per week, levied on the dues of contractor, subject to maximum up to 10% of the work done/CA Amount whichever is higher. (d)The contractor shall obtain approval of “Qualified Tradesman” as per condition 26 of IAFW-2249 before commencement of work at site and shall have sufficient manpower such as Electrician / FGM / Technician etc., readily available to meet the site requirement during emergency situation as per directions of Engineer-in-Charge. (e) The quoted rates shall be inclusive of cost of necessary Tools, Plants, Safety Equipments, Machinery etc., as per site requirement.

Excavation in trenches, not exc 1.5 m wide and not exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, laying cables etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft / loose soil complete all as specified and directed.

Returning, filling in and including spreading, levelling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and as directed.

Removing of excavated surplus soil to a distance n. exc 50 m and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed.

M&L sand cushioning with clean and dry rever sand in trenches for protection of UG cable and including punning down complete all as specified and directed. Note:- Punned thickness of sand coushioning shall only measured and paid.

Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1, flat, of size 300mmx 180mm x 40mm, laid along alignment of cable as protection to cable in trenches including taking out existing un-serviceable cable covers complete all as specified and directed.

M&L for cutting the tarmac / hard standings in road and excavating trenches across the road in size not exceeding 1.0 m wide and 0.75 m depth for laying cable / cable protection pipe including refilling earth & making good top surface of the disturbed portion with 100mm thick PCC (1:3:6) type C-2 (using 40mm graded stone aggregate) / bituminous mix as per existing & matching with the surroundings including removal of rabbish off to distance not exceeding 100 m complete all as specified and directed. Note:- Unit rate quoted against this item shall deemed to include cost of road cutting, earth work excavation, plain cement concrete work required for making good top of the surface, complete.

S&F 100 mm bore dia galvanised steel tubing, Light grade galvanised, laid under road crossing, for cable protection or fixed to poles, walls or laid under floors including taking down existing un-serviceable pipe of any description. complete all as specified and directed.

Supply & laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts, Earthed, grade cross sectional area 240Sqmm, 3 core, laid in trenches / duct / on pole / on wall including taking out existing unserviceable cable complete all as specified and directed.

All as per Sl item No. 9.00 here in before but cable of size 185 sqmm

All as per Sl item No. 9.00 here in before but cable of size 120 sqmm

Supplying and laying synthetic rubber insulated mats 3 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m including taking down existing un-serviceable mat complete all as specified and directed.

S&F danger notice plate of size 25 x 20 cm & 1.6mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size for HT including taking down existing un-serviceable notice platecomplete all as specified and as directed.

M&L cable jointing kit for 11 KV (Earthed grade) 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm for outdoor termination, heat shrink type joint complete with jointing material and accessories including taking down existing joint complete all as specified and directed. Note:- (i) The cost of Disconnecting and reconnecting the cable with HT network is deemed to be included in the unit rate quoted against this item. (ii) The cost of re-arranging the cable if needed is deemed to be included in the unit rate quoted against this item.

All as per Sl item No. 14.00 here in before but for cable of size 240 to 400 sqmm

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm for indoor termination, heat shrink type joint complete with jointing material and accessories including taking down existing joint complete all as specified and directed. Note:- (i) The cost of Disconnecting and reconnecting the cable with HT network is deemed to be included in the unit rate quoted against this item. (ii) The cost of re-arranging the cable if needed is deemed to be included in the unit rate quoted against this item.

All as per Sl item No. 16.00 here in before but for cable of size 240 to 300 sqmm

M&L cable jointing kit for 11 KV (Earthed) grade 3 core XLPE armoured aluminium conductor cable of size 240 sqmm to 400 sqmm for straight through, heat shrink type joint with jointing material and accessories including taking down existing one complete all as specified and directed. Note:- (i) The cost of excavation is deemed to be included in the unit rate quoted against this item.

All as per Sl item No. 18.00 here in before but for cable of size 120 to 185 sqmm

M&L for overhauling / servicing, comprising of repairs of 630 A 11KV 230/350 MVA vacuum circuit breaker (VCB) at INS Eksila including cleaning of all parts, adjusting contacts, checking epoxy body, drive insulator, spring charge mechanism, locking arrangements tripping coil circuits (closed / open) etc, checking all mechanical operations supporting insulators bush trolley auxiliary contact. make female contact and check all wiring, carrying out preventive maintenance alongwith testing of breakers by current injection test and refixing the same after repair / overhauling complete all as specified and as directed. Note:- (i) The servicing includes for busbar duct chamber, cable alleys and connecting accessories (ii) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of VCB panels with approved colour including lettering details all as per existing etc. to put in to the VCBs and panels in serviceable condition, testing and commissioning. (iii) Major spares like Breaker bushings, vacuum interrupter assly, busbar spout, busbar spout connections, circuit spout, circuit spout connections, buffer fixed contacts, moving contacts, tank assly, barriers, solenoid spares, dependent, spring mechanism / motor mechanism, trip unit etc will be measured and paid separately under relevant items. However the rate quoted shall be deemed to include for any other minor spares requiring replacement. (iv) The servicing shall be carried out by auhtorised service engineer of OEM and approval of the same shall be taken from Engr-in-Charge.

Disconnect and taking out IDMT / Numeric / Microprocessor based relay of any type & make from 11 KV HT panel at IDolphin Hills sub stn, cleaning the contacts, calibrating the relay by conducting secondary injection tests, checking of current transformer, rectification of defects in control wiring for proper tripping of circuit breakers through CTs and relay and tripping coils, adjustment / setting to plug and time multiplier settings of the relay to achieve the discrimination in tripping, tune / synchronise upstream breaker relay settings, re-installation of relay, testing & commissioning etc complete all as specified and as directed. Note:- (i) Arrangement of necessary testing / calibration kits, testing equipments, tools etc. shall be done by contractor and cost of the same shalll deemed to be included in the unit rate quoted. (ii) Testing & tuning shall be carried out in the presence of representative of the accepting officer to the entire satisfaction of the rep of GE.

S&F Busbar / CT supporting insulator of rating 400 to 1250A, suitable for 25 KA 11kV VCB panel including taking down existing un-serviceable busbar complete all as specified and as directed.

S& F service / test position limit switch 1NO+1NC, suitable for 400A to 1250A 11 KV VCB including taking down existing un-serviceable limit switch complete all as specified and as directed.

S&F rectifier unit (Monoblock), 16A, for spring charging motor of rating 400 to 1250A suitable for 11kV VCB panel including taking down existing un-serviceable rectifier unit complete all as specified and as directed.

S&F spring charging universal motor with gear box 220V AC of rating 400 to 1250A suitable for 11kV VCB including taking down existing un-serviceable motor complete all as specified and as directed.

S&F LED indication lamps, 110 V of various colours suitable for VCB including taking down existing un-serviceable indication lamps complete all as specified and as directed.

S&F programmable numerical inverse time over current / earth fault relay having IDMT / NI / VI / DT Curves with minimum time delay zero with respect to I>>, I>>>, Ie>>, Ie>>> settings, suitable for VCB of capacity 11/12 KV with all original / Retrofitting arrangements including taking down existing un-serviceable relay complete all as specified and as directed.

S&F programmable numerical inverse time over current / earth fault relay having IDMT / NI / VI / DT Curves with minimum time delay zero with respect to I>>, I>>>, Ie>>, Ie>>> settings, suitable for RMU of capacity 11/12 KV with all original / Retrofitting arrangements including taking down existing un-serviceable relay complete all as specified and as directed.

S&F epoxy resin body of rating 400 to 1250 A, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable epoxy resin body complete all as specified and as directed.

S & F insulating cover for R/Y/B phase, 400-1250 Amps, suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S & F brass nut / racking nut, 400-1250 Amps rating suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable nut complete all as specified and as directed.

S & F Epoxy Resin Spout bushings for busbar single pole R/B phase, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable ibushings complete all as specified and as directed.

S & F Epoxy Resin Spout bushings for busbar single pole Y phase, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable ibushings complete all as specified and as directed.

S & F Epoxy Resin Spout bushings for CT/PT/Circuit spout single pole R/Y/B phase , 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable bushings complete all as specified and as directed.

S & F isolating contact any type of single pole incoming / Outgoing , 800-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable isolating contact complete all as specified and as directed.

S & F flexible connection, 800-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable flexible connection complete all as specified and as directed.

S & F dashpot assembly upto 25 KA, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable dashpot complete all as specified and as directed.

S & F breaker wheel nylon, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable breaker wheel complete all as specified and as directed.

S & F top guide roller, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceabletop guide roller complete all as specified and as directed.

S & F guide bush, 400-1250 Amps, suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable guide bush complete all as specified and as directed.

S & F drive insulator with M10 Nylock Nut suitable for 630 Amps rating, 11KV VCB panel of make as per OEM including taking down existing un-serviceable drive insulator complete all as specified and as directed.

S & F drive beam (Pair) suitable for 400-800 Amps rating, 11KV VCB panel of make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S&F closing coil assembly, 110V DC suitable for 11KV VCB panel & of make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S&F tripping coil 110V DC suitable for 11KV VCB panel of make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S&F T‐N‐C Switch (Breaker Control Switch) for control switches control wiring, suitable for 11KV VCB & make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S&F vacuum interrupter of rating 400A / 630A / 1250A suitable for 11KV VCB make as per OEM including taking down existing un-serviceable insulating cover complete all as specified and as directed.

S&F bakelite HRC fuse base with carrier 32A, 415 V with HRC fuse 5 amps of make as per OEM including taking down existing un-serviceable fuse complete all as specified and as directed.

S&F buffer for opening spring suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable buffer complete all as specified and as directed.

S&F buffer for closing spring suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable buffer complete all as specified and as directed.

S&F ratchet wheel suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable ratchet wheel complete all as specified and as directed.

S&F trip roller suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable trip roller complete all as specified and as directed.

S&F motor cut off switch micro switch assembly suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable cut off switch complete all as specified and as directed.

S&F 12 way auxilliary switch (6 NO+ 6 NC) suitable for 11KV VCB of make as per OEM including taking down existing un-serviceable auxilliary switch complete all as specified and as directed.

S&F push button actuator 1 No element, 22.5 mm dia assembly including taking down existing un-serviceable actuator complete all as specified and as directed.

Labour / Technician only for identifying, diagnosing, tracing, checking & rectifying High Tension (11KV) faults, tracing location by meggering the lines, faults in panels, VCB`s, Transformers and other switchgears at any location, any time round the clock and rectifying it to restore the supply within time limit at various locations using appropriate fault locator, cable route locator etc complete all as specified and directed. Note:- 1. All the activities to trace the fault, rectifying & restoring the supply shall be carried out within specific reasonable time as directed by the Engineer-in-charge. 2. The cost of required tools (T& P), minor items such as lugs, nuts, bolts, HT insulation tape and safety equipments required for the job shall deemed to be included in the unit rate quoted against this item & nothing extra shall be paid to contractor by the department on these ground. 3. Safety of manpower deployed for the job is contractor’s responsibility. In case of any accident / Fatal injury, contractor shall be held responsible to settle all claims and nothing extra shall be paid to the contractor on this account. 4. The cost of all manpower (any number) for the job is deemed to be included in the quoted unit rate. 5. The cost of Fault identification by use of fault locator (if needed) is catered in separate Items. 6. Minimum one VCB / RMU technician, one Transformer Technician & one cable Jointer must be available round the clock during rectification process of fault if respective fault occurs.

M&L for detecting HT / LT UG cable faults located in any stretch / depth with sophisticated cable fault locator consisting of microprocessor based pre-locator system, HV surge generator, fault pin point surge wave receiver, cable identification instrument , cable tracer for exact location of under ground cable routes complete all as directed. Note:- The rate quoted deemed to be inclusive of arrangement of necessary fault locator equipment, transportation of equipment & charges for service engineer.

Servicing, Inspecting, checking, cleaning by using of blower, lubrication, greasing and carrying out preventive maintanance of RMU of capacity 11 KV, 250 / 350 MVA including calibrating the relay by conducting secondary injection tests and RMU in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge. Notes: Unit rate quoted shall be deemed to include cost for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, painting of RMU panels with approved colour including lettering details all as per exisitng.

S&F 11 KV CT, epoxy resin cast, dry type, indoor, 200/100 (primary) -5 + 5 A (Secondary) , with core 1, class 0.5, core 2 class 5P10 for fixing with spout bushing including taking down existing un-serviceable CT complete all as specified and as directed.

S&F 11 KV CT, epoxy resin cast, dry type, outdoor, 100/50 (primary) -1 + 1 A (Secondary), with core 1, class 0.5, core 2 class 5P10 for fixing with spout bushing including taking down existing un-serviceable CT complete all as specified and as directed.

S&F resin cast 11kV /√3 / 110v/√3 potential transformers, for 11kV VCB panel drawout or top mounted type for each pole including taking down existing un-serviceable PT complete all as specified and as directed.

S&F Under voltage Coil Kit 24 Vcc / Vdc make as per OEM suitable for RMU panel including taking down existing un-serviceable voltage coil kit complete all as specified and as directed.

S&F Circuit-Breaker Trip Coil Kit 24 Vcc / Vdc make as per OEM suitable for RMU panel including taking down existing un-serviceable trip coil kit complete all as specified and as directed.

S&F Circuit-Breaker Closing Coil Kit 24 Vcc / Vdc make as per OEM suitable for RMU panel including taking down existing un-serviceable trip coil kit complete all as specified and as directed.

S&F relay battery for RMU of size 1/2 AA including taking down existing un-serviceable battery complete all as specified and as directed.

S&F relay battery for RMU of size AA / AAA including taking down existing un-serviceable battery complete all as specified and as directed.

S&F motor for motorized mechanism 24 Vcc/Vdc suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM including taking down existing un-serviceable motor complete all as specified and as directed.

S&F Isolator Switch Position Indication for RMU 11 KV suitable for 11KV, & of make as per OEM including taking down existing un-serviceable switch complete all as specified and as directed.

S&F Circuit-Breaker Position Indication suitable for RMU 11 KV & of make as per OEM including taking down existing un-serviceable switch complete all as specified and as directed.

S&F Circuit-Breaker Fault tripping Indication suitable for RMU 11 KV & of make as per OEM including taking down existing un-serviceable switch complete all as specified and as directed.

S & F flair 22D lithium dua Fault Passage Indicator (FPI) suitable for 11KV, 400 to 800 Amp RMU & of make as per OEM including taking down existing un-serviceable FPI complete all as specified and as directed.

S & F VPIS Standard, 3.3 to 7.7 KV suitable for 11KV, RMU & of make as per OEM including taking down existing un-serviceable VPIS complete all as specified and as directed.

S & F Heat Resistor for I Switch Operating mechanismsuitable for 11KV, RMU & of make as per OEM including taking down existing un-serviceable VPIS complete all as specified and as directed.

S & F Heat Resistor for D/B Circuit Breaker mechanismsuitable for 11KV, RMU & of make as per OEM including taking down existing un-serviceable VPIS complete all as specified and as directed.

S&F cable termination cover boots, push on type suitable for 11KV, RMU & of make as per OEM including taking down existing un-serviceable cover boots complete all as specified and as directed.

M&L for taking down existing un-serviceable 11KV RMU, transporting to workshop from sub station (OEM Factory), opening including filling of SF6 gas, re-assembling by authorised technical rep of OEM, bringing back to site safely and re-installing, testing and commissioning the same complete all as specified and directed. Note:- The unit rate qouted against this items shall be deemed to include cost of transportation of RMU for both sides.

M&L for applying silicone High Voltage Insulator coating (Si-COAT 570 RTV) solution using electric airless sprayer to the inside surface of cable chamber alongwith busbar chamber & breaker chamber including all Spout bushings, insulators, CTs complete of 11 KV Indoor VCB panel including all dis-connection & re-connection of cables etc. complete all as specified and directed. Note:- (i) Quantity of solution consumed per VCB panel shall not be less than 3.0 Kg (ii) Each VCB whether I/C or O/G should be treated as one unit.

M&L with replacement of 6mm thick synthetic rubberized cork sheet gasket for top cover, HT/LT bushes for transformer of capacity 160 to 1600 KVA including tightening all the bushings and top cover to avoid any oil leakages complete all as specified and directed.

S&F off load tap changer assembly suitable for transformer of capacity upto 1600 KVA as per existing with 5 tapping position including opening top cover, conservator etc including taking down existing un-serviceable tap changer complete all as specified and as directed.

Shifting of standby Transformer of any capacity from any sub station to within 20 to 30 km, closing the transformers for loading into transporting vehicle with the help of crane, transportation to another site, unloading, including disconnecting and removing of existing faulty transformer and installation of standby transformer, making necessary HT/LT connections, earth connections and restoration of power supply including all T&P required complete all as specified and as directed.

M&L for isolating the HT supply of outdoor type transformer of capacity 160 to 1600 KVA, disconnecting HT and LT connections by opening clamps, bus bar extension and isolating the cables, keeping all the cables out from the HT/LT sides, physically checking of transformer for healthiness such as checking pressure release valve, oil condition etc. and performing transformer tests such as HV/LV megger test, ratio test, magnetic balance test, checking the lead condition from winding to bus rods, necessary soldering / jointing etc complete all as specified and as directed. Note:- (i) All testing shall be done in presence of Engr-in-Charge or his accredited rep and test reports shall be signed by contractor and Engr-in-Charge and kept on record. (ii) If the transsformer found satisfactory then HT/LT connections, assembly etc shall be done by the contractor and transformer shall be charged. (iii) If the transformer fails in these tests then the contractor has to shift the transsformer for winding / overhauling which shall be measured and paid separately. (iv) Cost of winding / overhauling if required shall be measured and paid separately. (v) The cost of Transportation of Transformer to & from the workshop if needed is deemed to be included in the unit rates quoted.

Supply and topping up of transformer oil with di-electric strength not less than 60 KV in 2.5mm rod gap into the conservator tank / body tank of the transformer / OCB / FRMUs etc at various locations complete all as directed by the Engineer-in-Charge.

Filtration of transformer oil of transformers / FRMUs installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration complete all as directed by the Engineer-in-Charge.

S&F brass spindle / studs for terminal on HT side threaded complete with nut, washers etc of suitable dia for transformer capacity of 160 - 500 KVA including taking down existing un-serviceable brass spindlecomplete all as directed by the Engineer-in-Charge.

All as per Sl item No. 84.00 here in before but suitable for 750 to 1600 KVA transformer

S&F brass spindle / studs for terminal on LT side threaded complete with nut, washers etc of suitable dia for transformer capacity of 160 - 500 KVA including taking down existing un-serviceable brass spindle complete all as directed by the Engineer-in-Charge.

All as per Sl item No. 86.00 here in before but suitable for 750 to 1600 KVA transformer

S&F silica gel breather assembly complete suitable for 160 to 500 KVA transformer as per existing with breather unit and silica gel including connecting with proper necessary gaskets if necessary including taking down existing un-serviceable breather assembly complete all as directed by the Engineer-in-Charge.

All as per Sl item No. 88.00 here in before but suitable for 750 to 1600 KVA transformer

Supply and replacement of silica gel in breather of transformers all as specified and as directed.

S&F HT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 160 to 500 KVA including taking down existing un-serviceable bushings complete all as specified and as directed.

All as per Sl item No. 91.00 here in before but suitable for 750 to 1600 KVA transformer

S&F LT bushings made out of porcelain, as per existing and suitable for distribution transformer of capacity 160 to 500 KVA including taking down existing un-serviceable bushings complete all as specified and as directed.

All as per Sl item No. 93.00 here in before but suitable for 750 to 1600 KVA transformer

M&L for preparation of old exposed painted surfaces of indoor / outdoor type transformer of capacity 160 to 500 KVA and painting the same with two coats of synthetic enamel paint including writing details of transformer on transformer plinth / base with white synthetic enamel paint on black synthetic enamel paint back ground complete & including one coat of white wash on exposed surface of transfomer plinth / base complete all as specified and as directed. Note :- Colour of paint shall be as decided by Engr-in-Charge.

All as per Sl item No. 95.00 here in before but 750 to 1600 KVA transformer

M&L for rewinding of distribution transformers of any capacity / size / type by strip opening & rewinding the HV coils (i.e. primary coils) from core assembly safely, removing old defective insulation paper, re-winding the coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials / bracings before placing in to the transformer and assembling the coil with new DPC insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as directed. Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.

All as per Sl item No. 97.00 here in before but for LV coils

M&L for re-insulating windings of HT / LT distribution transformers of capacity 100 to 750 KVA by strip opening of HT / LT coils (i.e. Primary / secondary coils) from core assembly safely, unwinding the HT / LT coils (i.e. Primary / secondary coils) complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, re-varnishing of the windings with super varnish including heating, drying, backing complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as directed by Engr-in- charge.

S&F gun metal drain valves suitable for transformer of capacity 160 to 1600 KVA including taking down existing un-serviceable drain valves complete all as specified and as directed.

Clearing away all bushes, small plants, grass, vegetation, saplings, shrubs, brushwood, undergrowth, roots upto root level including surface dressing n.exc 15 cm deep around and surroundings areas of E/M installations (i.e.Two Pole/ Four structures, outdoor-substation yards, pump house & Misc E/M installations etc) and removing rubbish / debris upto a distance of not less than 50 metres outside the periphery of the area under clearance complete all as directed.

THE VENKATESWARA SUPPLIERS (BID ID -3490344)

NJ ENTERPRISES (BID ID -3494258)

UV POWER TECH (BID ID -3490486)

Jessica Engineering Works (BID ID -3490211)