REPAIR/ MAINT OF TRANSFORMER, VOLTAGE STABILIZER, LT SWITCHES ETC CONNECTED ITEMS AT AKHNOOR UNDER GE (S) AKHNOOR

Amount

Disconnecting electrical connections from HT and LT sides of old serviceable/ damaged/ burnt step down transformers of any descriptions, capacity exceeding 25 KVA but not exceeding 100 KVA, any type and taking down from the platforms or mounted on exisiting position (four poles/ two pole structure) by hydraulic cranes of suitable capacity and transporting by truck/ lorry to the workshop, opening top cover, draining out the transformer oil in clean barrels, cleaning of sludge from oil tank and conservator tank, cleaning and polishing of tapping contact point, opening carefully copper wire/ strip wound LT coils and rewinding the same after providing new necessary insulating packing material by using the same old strip/ wire, refitting top cover with replacement of studs, nuts, bolts, washers and gasket after repairs/ replacement of unserviceable parts and cleaning the transformer and making the transformer absolutely leak proof, pouring in the insulating oil in the transformer, placing in original position on four pole/ two pole structure/ platform at site and making all HT/LT connections including testing the transformer after necessary repairs, complete all as specified and as directed by Engineer-In-Charge. Note: Spares required for repair/ replacement of unserviceable parts shall be measured and paid separately under relevant items of BOQ.

Description all as serial item No- 1.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 160 KVA.

Description all as serial item No- 1.00 here-in-before but for transformer of capacity exceeding 160 KVA but not exceeding 250 KVA.

Description all as serial item No- 1.00 here-in-before but for transformer of capacity exceeding 250 KVA but not exceeding 400 KVA.

Replacement of old unserviceable/ damaged core with new core, mild steel, of existing specifications, shape and sizes including cuting and fixing, suitable for transformers of any type and capacity, complete all as specified and as directed by Engineer-In-Charge.

Supply and fixing in replacement of HT coil of transformer capacity 25 KVA to 400 KVA, made of super enameled copper winding wire/ strip of existing insulation, gauge and specifications, complete all as specified and as directed by Engineer-In-Charge. Note: HT coil shall have same number of turns of winding wire and with matching to manufacturer design.

Supply and fixing in replacement of LT coil of transformer capacity 25 KVA to 400 KVA, made of super enameled copper winding wire/ strip of existing insulation, gauge and specifications, complete all as specified and as directed by Engineer-In-Charge. Note: LT coil shall have same number of turns of winding wire and with matching to manufacturer design.

Replacement of old unserviceable/ damaged HT bushing assembly with new HT bushing assembly (Set of three) with insulated brass stud including nuts, bolts and washers, suitable for transformer of any type, capacity 25 KVA to 100 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 8.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 8.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Replacement of old unserviceable/ damaged LT bushing assembly with new LT bushing assembly (Set of Four) with insulated brass stud including nuts, bolts and washers, suitable for transformer of any type, capacity 25 KVA to 100 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 11.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 11.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Replacement of old unserviceable/ damaged cork sheet gasket with new cork sheet gasket, suitable for transformer of any type, capacity 25 KVA to 100 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 14.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 14.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Replacement of old unserviceable/ damaged tap changing assembly with new tap changing assembly, off load, on HT winding to vary the voltage ±7.5%, in steps of 2.50%, including necessary connection, HT winding, re-insulation for complete functioning of tap changer, transformer capacity 25 KVA to 100 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 17.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 17.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Dehydration and filtration of transformer oil after draining out oil from transformer by the dehydration machine at site or nearby transformer workshop to achieve di-electric strength 40 KV at 4mm gap, complete all as specified and as directed by Engineer-In-Charge. Note: (i) Cost of transportation of dehydration machine and other required materials and tools, plants shall be deemed to be included in the quoted rates. (ii) Test certificate of di-electric strength shall be produce before and after dehydradation and filtration process.

Replacement of old unserviceable/ damaged air breather assembly with new air breather assembly with silica gel suitable for 11/0.433 KV transformer including nuts, bolts and washers, suitable for transformer 25 KVA to 100 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 21.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 21.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Supply only fresh transformer oil to top-up and filling in the existing transformer, di-electric strength not than 45 KV, meeting Bureau of Indian Standards: IS 335-1993 (Reaffirmed-2005) specification, examined in a 100mm thick layer at 270°C, clear, transparent and free from all type of suspended matter or sediment, complete all as specified and as directed by Engineer-In-Charge. Make: IOCL/ HPCL/ BPCL/ Reliance.

Preparation of old, external surface of transformers capacity 25 KVA to 100 KVA, by removing the scrap, rust, washing including cleaning and spray painting with two coats of synthetic enamel paint including numbering MES No in white colour synthetic enamel paint, at site or at workshop, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 25.00 here-in-before but for transformer of capacity exceeding 100 KVA but not exceeding 200 KVA capacity.

Description all as serial item No- 25.00 here-in-before but for transformer of capacity exceeding 200 KVA but not exceeding 400 KVA capacity.

Disconnecting electric connections of servo voltage stabilizers, capacity 15 KVA to 30 KVA, draining out the servo voltage stabilizers oil in clean barrels for re-use, cleaning of sludge from oil tank and transporting to workshop for repairs and return back to it's original position after repairs including loading and unloading by mechenical means, complete all as specified and as directed by Engineer-In-Charge. Note: Spares required for repair/ replacement of unserviceable parts shall be measured and paid separately under relevant items of BOQ.

Description all as serial item No- 28.00 here-in-before but for servo voltage stabilizers of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 28.00 here-in-before but for servo voltage stabilizers of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Replacement of old unserviceable Printed Circuit Board (PCB) with new Printed Circuit Board (PCB) of voltage stabilizer as per existing make and type, capacity 15 KVA to 30 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 31.00 here-in-before but for servo voltage stabilizers of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 31.00 here-in-before but for servo voltage stabilizers of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Replacement of old unserviceable carbon bushes with new carbon bushes of voltage stabilizer as per existing make and type, capacity 15 KVA to 30 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 34.00 here-in-before but for servo voltage stabilizers of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 34.00 here-in-before but for servo voltage stabilizers of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Replacement of old unserviceable servo motor with new servo motor of voltage stabilizer as per existing make and type, capacity 15 KVA to 30 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 37.00 here-in-before but for servo voltage stabilizers of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 37.00 here-in-before but for servo voltage stabilizers of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Push button suitable for servo voltage stabilizers of any capacity, as per existing design and range, fixing in repairs, complete all as specified and as directed by Engineer-In-Charge.

Digital voltmeter, range 0-500 Volts, size 96mmx96mm, flush type, complete all as specified and as directed by Engineer-In-Charge.

Digital ammeter, range 0-100 Amps, size 96mmx96mm, square shape, complete all as specified and as directed by Engineer-In-Charge.

Replacement of old unserviceable Servo Dimmer Booster Coil with new Servo Dimmer Booster Coil, for automatic voltage corrections, make, type and design as per site requirement, suitable for voltage stabilizer capacity 15 KVA to 30 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 44.00 here-in-before but for transformer of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 44.00 here-in-before but for transformer of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Replacement of old unserviceable Dimmer Gear set with new cast iron Dimmer Gear set, for automatic voltage corrections, make, type and design as per site requirement, suitable for voltage stabilizer capacity 15 KVA to 30 KVA, complete all as specified and as directed by Engineer-In-Charge.

Description all as serial item No- 47.00 here-in-before but for transformer of capacity exceeding 30 KVA but not exceeding 60 KVA capacity.

Description all as serial item No- 47.00 here-in-before but for transformer of capacity exceeding 60 KVA but not exceeding 100 KVA capacity.

Material & labour for earthing complete with galvanised cast iron earth plate electrode of size 600x600x6.3mm thick buried directly in ground less than 3.0m deep below normal ground level as earth electrode with top edge of the earth plate not less than 2.25mtr below ground level using GI strip 32x6 mm dia as earth continuity conductor connected to earth plate by means of welding, GI thimbles, nuts, bolts & washers all as directed including providing earth wire protection pipe of GI tubing light grade 40mm dia from earth plate to main switch board/panel, watering pipe 20mm dia with wire mesh and funnel at top, earth pit and RCC pit cover with handle of angle iron frame of size 40 x 40 x 6mm in PCC 1:3:6 adequate quantity of charcoal dust and salt and kalmi shore all around the earth plate, earth work in any type of soil remaining surplus excavated material all as required at site and specified in EP No 3 of SSR part I 2009 or directed by Engineer-in-charge and incl testing on completion. NOTE :- (i) Item of earthing includes cost of 7.5 m long GI strip of size 32x6mm with protection pipe of 40mm dia GI medium grade, any variation in length shall be adjusted through deviation order based on SSR rates reduced by (-40)%. (ii) On testing after completion of earthing if the desired earth resistance is not obtained earthing will be re-done by the contractor at his own risk and cost.

Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/ pipe or fixed to poles or any other indicated situation for loop earthing etc. as required, aluminium strip 25x3.0mm with saddles and fixing, complete all as specified and as directed by Engineer-In-Charge.

Disconnecting all electric connections from alternator and fuel connection from engine, decoupling of engine and alternator, strip opening of diesel driven diesel generator of capacity 30 KVA to 63 KVA, for repair, and complete for carrying out the overhauling after de-assembling the engine assembly, cleaning/ washing the engine block and other spare parts, replacing defective spare parts with new spare parts as required for smooth functioning of diesel engine and strip opening of alternator for repair by replacement of old defective spare parts including any type of metaling, welding, grinding, lath machine work required at site/ workshop to compete the repair the engine, all as required at site, re-assembling the engine in existing position complete and testing on completion all as specified and as directed by Engineer-In-Charge.Make: Serial No- Note: (a) New spare parts will be measured and paid separately as supply only under the respective items. (b) Cost of cleaning, welding, minor repair and special tools and plants required for dismantling engine will deemed to be included in quoted rate. (c) Transportation cost of diesel engine/ alternator to workshop shall deemed included in quoted rate.

Description all as per serial item No- 52.00 here-in-before but for engine of diesel driven diesel generator of capacity 100 KVA to 125 KVA.

Supply only following new spare parts required for repair of diesel engine and alternator of DG Set capacity 30 KVA to 63 KVA :-

(i) Piston with piston pin, connecting rod and lock assembly complete.

(ii) Cylinder liner with liner ring assembly complete.

(iii) Piston ring set.

(iv) Major overhauling gasket set with 'O' ring set.

(v) Head valve inlet and exhaust.

(vi) Main Oil seal (Front and Rear).

(vii) Hose pipe with clips and joint set.

(viii) Fuel Filter.

(ix) Oil Filter.

(x) Air Filter.

(xi) Solinoid Switch

Supply only following new spare parts required for repair of diesel engine and alternator of DG Set capacity 100 KVA to 125 KVA :-

(i) Piston with piston pin, connecting rod and lock assembly complete.

(ii) Cylinder liner with liner ring assembly complete.

(iii) Piston ring set.

(iv) Major overhauling gasket set with 'O' ring set.

(v) Head valve inlet and exhaust.

(vi) Main Oil seal (Front and Rear).

(vii) Hose pipe with clips and joint set.

(viii) Fuel Filter.

(ix) Oil Filter.

(x) Air Filter.

(xi) Water Pump Assembly.

(xii)Solinoid Switch

De-assembling/ taking out radiator of DG set capacity 110 KVA, for cleaning and repair, using ‘K’ oil and radiator cleaning solution hydro-chloric acid by pressure of pump/ caustic soda with wire brush and necessary welding/ brazing of water tubes/ fins, whichever is required for cleaning and repairing, complete all as specified and as directed by Engineer-In-Charge.

De-assembling/ taking out radiator of DG set capacity 30 to 63 KVA, for cleaning and repair, using ‘K’ oil and radiator cleaning solution hydro-chloric acid by pressure of pump/ caustic soda with wire brush and necessary welding/ brazing of water tubes/ fins, whichever is required for cleaning and repairing, complete all as specified and as directed by Engineer-In-Charge.

Supply and fixing in replacement of stator/ field coil of alternator of DG set of any capacities, made of super enameled copper winding wire of existing insulation, gauge and specifications, complete all as specified and as directed by Engineer-In-Charge. Note: Stator/ field coil shall have same number of turns of winding wire and with matching to manufacturer design/ specifications.

Disconnecting all electric connections between alternator and panel, decoupling of engine and alternator, strip opening of alternator of diesel driven diesel generator of capacity 30 KVA to 63 KVA, for repair, and complete for carrying out the overhauling after de-assembling the alternator assembly, cleaning/ washing the block and other spare parts, replacing defective spare parts with new spare parts as required for smooth functioning of diesel engine, repair alternator by replacement of old defective spare parts including any type of metaling, welding, grinding, lath machine work required at site/ workshop to compete the repair the engine/ alternator, all as required at site, re-assembling the engine in existing position complete and testing on completion all as specified and as directed by Engineer-In-Charge.Make: Serial No- Note: (a) New spare parts will be measured and paid separately as supply only under the respective items. (b) Cost of cleaning, welding, minor repair and special tools and plants required for dismantling engine will deemed to be included in quoted rate. (c) Transportation cost of diesel engine/ alternator to workshop shall deemed included in quoted rate.

Supply only following new spare parts required for repair of alternator of DG Set capacity 40 KVA to 63 KVA :-

(i) Slip ring assembly Bronze.

(ii) Carbon bush.

(iii) Carbon bush holder.

(iv) AVR (Automatic Voltage Rectifier/ Regulator).

(v) Alternator and diesel engine coupling set.

Repair, calibration, checking and pressure testing of fuel injector pump assembly of DG set capacity 30 KVA to 63 KVA including replacement of damaged/ defective parts, cups, barrel plunger and washers including transportation for workshop for repair, testing whole assembly after necessary repair and fixing in engine, complete all as specified and as directed by Engineer-In-Charge.Note: (a) New spare parts will be measured and paid separately as supply only under the respective items. (b) Cost of cleaning, welding, minor repair and special tools and plants required for dismantling and refixing with engine will deemed to be included in quoted rate.

Supply only following new spare parts required for repair of fuel injection pump (FIP) of diesel engine of DG Set capacity 30 KVA to 63 KVA :-

(i) Element for fuel injection pump.

(ii) Delivery valve for fuel injection pump.

(iii) Nozzle for fuel injection pump.

(iv) Feed pump for fuel injection pump.

(v) Bearing for fuel injection pump.

(vi) Oil seal for fuel injection pump.

(vii) Diaphram valve for fuel injection pump.

(viii) Repair kit minor for fuel injection pump.

Dismantling/ taking out old serviceable alternator charger/ dynamo capacity 12 Volts, of DG set, for repair by replacing burnt spare parts, oiling greasing to movable spare parts, and testing after repairing including re-mounting the same, complete all as specified and as directed by Engineer-In-Charge. Note: Following spare parts shall be replaced: (a) Solenoid switch. (b) Re-winding of Armature and field coil. (c) Pinion steel.

Carryout periodic maintenance/ servicing of DG set capacity 30 KVA to 63 KVA by calibration of fuel injection pump including dismantling of radiator, radiator fan, water pump assembly, air cleaner, rocker cover housing rocker, oiling and greasing to movable spare parts such as bearing etc, replacement of old defective air filter, fuel filter, oil filter, insulation cover/ asbestos rope of exhaust pipe with new and manufacturer specified air filter, fuel filter and oil filter, insulation cover/ asbestos rope of exhaust pipe tightening the screws of hose and hose pipe set, strip opening of alternator cleaning of stator and field coils, rotor assembly, AVR unit and apply one coat of varnishing using ‘H’ class varnish and complete service work as required at site, re-assembling the engine/ alternator in existing position, and testing on completion all as specified and as directed by Engineer-In-Charge. Note: (a) New spare parts will be measured and paid separately as supply only under the respective items. (b) Cost of grease, filters (fuel, oil and air), AC/ insulating rope, cleaning, welding, minor repair and special tools and plants required for dismantling engine will deemed to be included in quoted rate.

Description all as serial item No- 100.00 here-in-before but for DG set of 100 KVA to 125 KVA capacity.

Supply only engine oil/ lubricant, 20 W 40 grade, suitable for diesel engine of DG set of any capacity and any make, complete all as specified and as directed by Engineer-In-Charge.

Supply only coolant fluid suitable for radiator of DG sets of any capacity and any make, complete all as specified and as directed by Engineer-In-Charge.

Replacement of old unserviceable/ damaged battery with new storage cell lead acid type 12 Volts, 180 AH including lead terminals and copper thimble, copper nuts, bolts for making necessary connections, complete all as specified and as directed by Engineer-In-Charge.

Replacement of old unserviceable/ damaged battery with new storage cell lead acid type 12 Volts, 150 AH including lead terminals and copper thimble for making necessary connections, complete all as specified and as directed by Engineer-In-Charge.

S&F in replacement of old unserviceable/ damaged Change over switch with new Change over switch, in sheet metal enclosures ON LOAD, rating 100 Amps, four poles, 415 Volts, AC, 50 Hz, with center handle, conforms to IS:13947 (Part-3); IEC:60947-2, with stain less steel enclouser complete all as specified and as directed by Engineer-In-Charge. Make: Indo-Asian cat part No- ICAS0100 or equivalent in L&T/ Legrand/ ABB/ Siemens.

Replacement of old unserviceable/ damaged MCCB with new MCCB, Four pole, 415 Volts, adjustable thermal and adjustable magnetic setting, 160 Amps with breaking capacity 36 KA, having indicating lamp, Ics=100% and Icu as per IEC 60947-2, complete all as specified and as directed. Make: Schneider cat part No- LV516343 or equivalent in L&T/ Legrand/ ABB/ Siemens.

Supply only copper lead cable 2.0mtrs long, multi-stranded, with copper thimble for making necessary connections at both ends, suitable for 12/ 24 Volts, 180 AH battery including copper lugs, nuts, bolts and washers, complete all as specified and as directed by Engineer-In-Charge.

Replacement of old unserviceable belts with new belts of DG set of following capacities:

Fan belt for DG sets of 30 KVA capacity.

Fan belt for DG sets of 40 KVA to 63 KVA capacity.

Material and labour in replacement of Silica gel of good quality

Material and labour for carryout Physical check amd Electrical testing of transformer as per following criteria by approved firm as per following details all as directed by Engr-in-Charge. (a) Check Oil level, colour of oil, oil leaking, oil temperature. (b) Check Breather with silica gel, tape position and noise level. (c) Status of HT/LT connection, tightening the connections, check load in each phase and load balancing if required (d) Insulation test of HT/LT to earth, HV resistance and BDV of oil. (e) Tightening of earth connection and refixing loose earth conductor with clamps & clips.

S&F in replacement of old unserviceable/ damaged Change over switch with new Change over switch in sheet metal enclosures, ON LOAD, rating 200 Amps, four poles, 415 Volts, AC, 50 Hz, with center handle, conforms to IS:13947 (Part-3); IEC:60947-2, with stain less steel enclouser complete all as specified and as directed by Engineer-In-Charge. Make: Indo-Asian cat part No- ICAS0200 or equivalent in L&T/ Legrand/ ABB/ Siemens.

SPECIAL NOTE FOR DG SETS AND VOLTAGE STABLIZER'S REPAIRS: The contractor will submit a scanned copy of Memorandum of under standing from OEMs ( or authorized dealers) for the respective E/M installations. The details of OEMs are as under:- (a) DG Set -(i) Kirlosker Green/Cummins (ii) Crompton Greaves (iii) Sudhir (iv) Mahindra (b) Servo Voltage Stablizer - (i) Vinitek (ii) Electric field

Amount of Schedule of credit of for Rs 3,80,475.00 shall be deducted from quoted amount.

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