REPAIR AND MAINTENANCE OF TRANSFORMERS AND ALLIED WORKS UNDER AGE E/M SI LINE BHOPAL UNDER GE BHOPAL

Amount

Disconnecting, taking out old unserviceable under ground cable of rated voltage 11 kV, nominal cross sectional area of main conductor 120 sqmm, upto 4 core, any type from trenches including taking out concrete cable cover/ bricks etc. including removing materials to store for keeping in safe custody or for reuse or for taking credit (credit for above items should be made as per conditions separately) all as specified and directed by the Engineer-in-Charge.

Disconnecting, taking out old unserviceable under ground cable of rated voltage 11 kV, nominal cross sectional area of main conductor 95 sqmm, upto 4 core, any type from trenches including taking out concrete cable cover/ bricks etc. including removing materials to store for keeping in safe custody or for reuse or for taking credit (credit for above items should be made as per conditions separately) all as specified and directed by the Engineer-in-Charge.

Excavating in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. or for cable laying or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in hard/ dense soil complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm in soft/ loose/ hard/ dense soil complete all as specified and as directed.

Removing excavated material (soils) not exceeding 50 m and depositing where directed at a level n exc. 1.5 m above the starting point

Supply & spreading in trenches dry river sand cushioning to underground cable in trenches including spreading, levelling hand punning down complete all as specified and directed Note:- Depth of sand cushioning will be measured after punning down and levelling the sand properly.

Supply & laying unreinforced precast concrete cable cover class HV type 1, flat shape, dimension 300 mm X 180 mm X 40 mm as per IS 5820: 1970 complete all as specified and directed.

Supply & laying unreinforced precast concrete cable cover class LV type 1, flat shape, dimension 250 mm X 150 mm X 40 mm as per IS 5820: 1970 complete all as specified and directed.

S & F cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

S & F cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and as directed.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism and taken on schedule of credit complete all as specified and as directed.

S & F gang operated air break switch, three poles, outdoor type, nominal system voltage 11 kV, rated voltage 12 kV, rated normal current 200 Amps, rated frequency 50 Hz, rated one minute power frequency withstand voltage between (i) earth & poles 28 kV (rms) (ii) across the isolating distance 32 kV (rms), rated lightning impulse withstand voltage (i) to earth and between poles 75 kV (Peak) (ii) across the isolating distance 85 kV (Peak), Rated short-time withstand current 25 kA for 3 seconds, rated peak withstand current 63 kA for climatic conditions at the site, mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level for current complete all as specified and as directed.

S & F in repairs silica gel breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity exceeding 1000 kVA and upto and including 1500 kVA complete all as specified and as directed.

S & F in repairs silica gel breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity upto and including 500 kVA complete all as specified and as directed.

S & F in repairs silica gel breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity exceeding 500 kVA and upto and including 1000 kVA complete all as specified and as directed.

S & F silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of any capacity.

Dismantling cross-arms of mild steel channel or angle sections etc. complete and setting aside for re-use or removing to store or for schedule of credit

M & L for cross arms, bracings, supports, clamps, back plates and stay clamp fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and applying two coats of aluminium paint over a coat of red oxide primer complete all as specified and as directed.

Dismantling earth wire or copper conductor, service feeder or distributor span removing to store or taken on schedule of credit complete all as specified and as directed.

S & F galvanised mild steel wire 3.15 mm or 4 mm dia in overhead lines complete all as specified and as directed.

S & F in repairs porcelain pin insulator, Type B, Nominal System voltage 11 kV, highest system voltage 12 kV, visible discharge test voltage 9 kV, wet power frequency withstand voltage 35 kV, power frequency puncture withheld voltage 105 kV, impulse withstand voltage 75 kV, minimum total creepage distance 230 mm, minimum failing load 5 kN, of suitable size with galvanised steel insulator pin, nut, washers complete all as specified and as directed.

S & F in repairs porcelain disc insulator, ball and socket type, Type B, Nominal System voltage 11 kV, highest system voltage 12 kV, visible discharge test voltage 9 kV, wet power frequency withstand voltage 35 kV, impulse withstand voltage 75 kV, minimum total creepage distance 230 mm, minimum failing load 70 kN, of suitable size with galvanised steel stud pin, nut, washers complete all as specified and as directed.

Supply and erection in repairs of three piece metal oxide lightning arrestor suitable for 11 kV continuous operating voltage (3 phase) with rated voltage 12 kV (rms) with nominal discharge current rating of 2.5 kA and complete with galvanised clamping arrangements, GI bolts, nuts, washers etc. complete as specified and as directed.

M & L for cement concrete M15 (Nominal Mix) using 20 mm nominal size graded crushed stone aggregate in lintels upto 1.5 m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs, water troughs, slab staging for water tanks, filling of pressed steel door frame, fixing of hold fasts and the like including weathering, slightly rounded or chamfered angles and throating including necessary formworks complete all as specified and directed by Engineer- in-charge.

M & L for preparing and painting on steel tubular swaged pole 410 SP-55 (11.00 metre long) including cross arms, GI brackets with two coats of aluminium paint over a coat of aluminium red oxide primer on exposed portion and including making strips of width 30 cm upto 1.5 m from the ground level in black and white shade in alternate layer including numbering of poles using two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer complete all as specified and as directed.

M & L for preparing and painting on steel tubular swaged pole 410 SP-31 (9.00 metre long) including cross arms, GI brackets with two coats of aluminium paint over a coat of aluminium red oxide primer on exposed portion and including making strips of width 30 cm upto 1.5 m from the ground level in black and white shade in alternate layer including numbering of poles using two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer complete all as specified and as directed.

M & L for spray painting of transformers (any type power or distribution)) of capacity upto and including 250 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the GE including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) Spray painting with two coats of synthetic enamel paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed .

M & L for spray painting of transformers (any type power or distribution)) of capacity above 300 kVA and upto and including 500 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the GE including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) Spray painting with two coats of synthetic enamel paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed.

M & L for spray painting of transformers (any type power or distribution)) of capacity above 600 kVA and upto and including 750 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the GE including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) Spray painting with two coats of synthetic enamel paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed .

M & L for spray painting of transformers (any type power or distribution)) of capacity above 900 kVA and upto and including 1250 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the GE including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) Spray painting with two coats of synthetic enamel paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed .

M & L for spray painting of transformers (any type power or distribution)) of capacity above 1500 kVA and upto and including 2000 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the GE including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) Spray painting with two coats of synthetic enamel paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed .

S & F in repairs porcelain line post insulator, Type B, Nominal System voltage 33 kV, highest system voltage 36 kV, visible discharge test voltage 27 kV, wet power frequency withstand voltage 75 kV, power frequency puncture withheld voltage 180 kV, impulse withstand voltage 170 kV, minimum total creepage distance 580 mm, minimum failing load 10 kN, of suitable size with galvanised steel stud pin, nut, washers complete all as specified and as directed.

Supplying & laying including taking town in trenches, in road cutting and along pole 40 mm nominal bore, light grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Calibration and testing of combined inverse time over current earth fault and instantaneous relay for checking and cleaning and insure physical healthiness with visual check for healthy tripping of over current and earth fault setting tripping timer ratio setting instantaneous time setting etc. as per installed capacity of transformers with artificial current injunction on primary & secondary with current injunction machine complete all as directed.

Disconnecting, taking down distribution transformer outdoor type 11 kV /415 volts having capacity 100 kVA, 150 kVA, 200 kVA, 250kVA and 315 kVA, transportation to the workshop for repairs including opening of transformers cover, draining of oil, de-tanking of core and coil assembly, cleaning, washing of dust and dirt from all parts including core, tank and cooling tubes radiators etc., joint inspection for estimate, replacement of defective parts, assembly, stage inspection, re-tanking, oil filtration/ dehydration, fill dehydrated oil and fresh oil and testing the repaired transformers for all the routine tests as per IS 2026 (Part 1): 2011 with latest amendments. Note: - (a) Transformer oil shall be drained out by the contractor in suitable capacity mild steel drums to be arranged by the contractor. The said drained out transformer oil shall be refilled in the transformer duly dehydrated after repair and the cost thereof shall be included in unit rate quoted against the respective item of this schedule. (b) Rewinding of both HT & LT coil shall be measured and paid for separately under respective item of this schedule. (c) Transportation charges for transportation of transformer from site to workshop and after repair, workshop to site shall be borne by the contractor and cost thereof shall be deemed to be included in the unit rate quoted for this item. (d) The spare parts excluding nuts, bolts, washer shall be measured and paid for separately (e) The said transformer shall be repaired in reputed workshop as decided by the GE. (f) Testing of transformer after repair shall be carried out as per IS 2026 (Part 1): 2011 and the cost of testing shall be deemed to be included in unit rate quoted against this item. (g) The IR value of the dried winding before inserting the core in the shell shall be measured and recorded.

Disconnecting, taking down distribution transformer outdoor type 11 kV /415 volts having capacity 400 kVA, 500 kVA and 630 kVA, transportation to the workshop for repairs including opening of transformers cover, draining of oil, de-tanking of core and coil assembly, cleaning, washing of dust and dirt from all parts including core, tank and cooling tubes radiators etc., joint inspection for estimate, replacement of defective parts, assembly, stage inspection, re-tanking, oil filtration/ dehydration, fill dehydrated oil and fresh oil and testing the repaired transformers for all the routine tests as per IS 2026 (Part 1): 2011 with latest amendments. Note: - (a) Transformer oil shall be drained out by the contractor in suitable capacity mild steel drums to be arranged by the contractor. The said drained out transformer oil shall be refilled in the transformer duly dehydrated after repair and the cost thereof shall be included in unit rate quoted against the respective item of this schedule. (b) Rewinding of both HT & LT coil shall be measured and paid for separately under respective item of this schedule. (c) Transportation charges for transportation of transformer from site to workshop and after repair, workshop to site shall be borne by the contractor and cost thereof shall be deemed to be included in the unit rate quoted for this item. (d) The spare parts excluding nuts, bolts, washer shall be measured and paid for separately (e) The said transformer shall be repaired in reputed workshop as decided by the GE. (f) Testing of transformer after repair shall be carried out as per IS 2026 (Part 1): 2011 and the cost of testing shall be deemed to be included in unit rate quoted against this item. (g) The IR value of the dried winding before inserting the core in the shell shall be measured and recorded.

Disconnecting, taking down power transformer outdoor type 33 kV /11 kV having capacity 1000 kVA to 2000 kVA, transportation to the workshop for repairs including opening of transformers cover, draining of oil, de-tanking of core and coil assembly, cleaning, washing of dust and dirt from all parts including core, tank and cooling tubes radiators etc., joint inspection for estimate, replacement of defective parts, assembly, stage inspection, re-tanking, oil filtration/ dehydration, fill dehydrated oil and fresh oil and testing the repaired transformers for all the routine tests as per IS 2026 (Part 1): 2011 with latest amendments. Note: - (a) Transformer oil shall be drained out by the contractor in suitable capacity mild steel drums to be arranged by the contractor. The said drained out transformer oil shall be refilled in the transformer duly dehydrated after repair and the cost thereof shall be included in unit rate quoted against the respective item of this schedule and paid separately. (b) Rewinding of both HT & LT coil shall be measured and paid for separately under respective item of this schedule. (c) Transportation charges for transportation of transformer from site to workshop and after repair, workshop to site shall be borne by the contractor and cost thereof shall be deemed to be included in the unit rate quoted for this item. (d) The spare parts excluding nuts, bolts, washer shall be measured and paid for separately (e) The said transformer shall be repaired in reputed workshop as decided by the GE. (f) Testing of transformer after repair shall be carried out as per IS 2026 (Part 1): 2011 and the cost of testing shall be deemed to be included in unit rate quoted against this item. (g) The IR value of the dried winding before inserting the core in the shell shall be measured and recorded.

M & L for rewinding of coils on secondary side of transformer of any capacity using proper size, double paper covering, ordinary copper winding wires conforming to IS 7404 (Part-1): 1991 as per existing size, turns and insulation class including connecting minor insulation materials suitable for 11 kV/ 415 V transformer complete all as specified and as directed. (Note: - Weight of only winding wire shall measured for payment purpose.)

M & L for rewinding of coils on primary side of transformer of any capacity using proper size, double paper covering, ordinary copper winding wires conforming to IS 7404 (Part-1): 1991 as per existing size, turns and insulation class including connecting minor insulation materials suitable for 33 kV/ 11 kV transformer complete all as specified and as directed. (Note: - Weight of only winding wire shall measured for payment purpose.)

M & L for rewinding of coils on secondary side of transformer of any capacity using proper size, double paper covering, ordinary copper winding wires conforming to IS 7404 (Part-1): 1991 as per existing size, turns and insulation class including connecting minor insulation materials suitable for 33 kV/ 11 kV transformer complete all as specified and as directed. (Note: - Weight of only winding wire shall measured for payment purpose.)

S & F LT brass stud suitable for transformer of capacity 50 kVA to 250 kVA including nut, bolt, washer & rubber conical bush etc. complete all as specified and as directed.

S & F LT brass stud suitable for transformer of capacity 300 kVA to 500 kVA including nut, bolt, washer & rubber conical bush etc. complete all as specified and as directed.

S & F HT brass stud suitable for transformer of capacity 50 kVA to 250 kVA including nut, bolt, washer & rubber conical bush etc. complete all as specified and as directed.

S & F HT brass stud suitable for transformer of capacity 300 kVA to 500 kVA including nut, bolt, washer & rubber conical bush etc. complete all as specified and as directed.

S & F in repairs LT bush insulator suitable for transformer of capacity 50 kVA to 250 kVA complete all as specified and as directed.

S & F in repairs LT bush insulator suitable for transformer of capacity 300 kVA to 500 kVA complete all as specified and as directed.

M & L for reconditioning of unserviceable battery 12 V, 180 AH by replacing complete cells, PVC separators, electrolyte, terminals and final sealing, recharging and testing complete as directed.

Providing and laying 60 mm thick factory made cement concrete interlocking paver block of M35 grade conforming to IS 15658-2006 made by block making machine with strong vibratory compaction, of approved size, design & shape, cast in rubber mould, glossy finish of approved colour, laid in required colour and pattern over and including 30 mm thick compacted bed of coarse sand, filling the joints with fine sand etc. all complete as per the direction of Engineer-in-charge.

S & F XLPE cable end termination, heat shrinkable, outdoor type complete with jointing material and accessories suitable for voltage 6.35 kV/ 11 kV (Earthed), 3 core, 50 sqmm to 95 sqmm complete all as specified and as directed.

S & F XLPE cable end termination, heat shrinkable, outdoor type complete with jointing material and accessories suitable for voltage 6.35 kV/ 11 kV (Earthed), 3 core, 120 sqmm to 185 sqmm complete all as specified and as directed.

S & F cable jointing kit for 6.35 kV/ 11 kV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

S & F cable jointing kit for 6.35 kV/ 11 kV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and as directed.

Dismantling ACSR or AAC conductors removing to store or taken on schedule of credit complete all as specified and as directed.

Supply, fixing and stringing ACSR (aluminium conductor galvanized steel-reinforced) of any size and type in accordance with site requirement and binding on insulator by means of 22 gauge aluminium binding wire to permissible sag complete all as specified and as directed.

Dehydration and filtration of existing transformer oil of transformer at different location with filtration machine and heating system to get the minimum di-electric strength of oil 60 kV minimum without disturbing the power supply system and refilling/ topping up /replacement of unserviceable transformer oil complete all as specified and as directed.( Note: Transformer oil required extra for filling/topping up shall be measured and paid separately under the relevant items of this schedule).

Supply, filling and topping up new transformer oil of dielectric strength not be less than 60 kV and conforming to IS 335: 1993 complete all as specified and as directed.

Supplying & laying including taking town in trenches, in road cutting and along pole 100 mm nominal bore, light grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011 complete all as specified and as directed.

Supply, laying and testing cross linked polyethylene (XLPE) insulated, PVC sheathed cables for working voltages 6.35 kV/ 11 kV, three phase, earthed system, 3 core, screened, armoured power cable, 120 sqmm of nominal area of conductor, aluminium conductor, ISI marked as per IS 7098 (Part-II): 2011 laid in trenches or under floors making all connections with necessary glands lugs bushing complete all as specified and as directed.

Supply, laying, jointing, testing and commissioning cross-linked polyethylene (XLPE) insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 3 core with reduced neutral conductors (3½ core), nominal cross sectional area of main conductor 95 sqmm, stranded aluminium conductor, ISI marked as per IS 7098(Part-I): 1988 including cable glands, lugs etc. to suit the cable size and to be laid in trenches, fixed along pole, under floors, through GI pipe laid under floors/roads, through concealed GI pipe along wall etc. complete all as specified and as directed.

M & L for earthing complete with galvanised steel plate earth electrode 600 mm X 600 mm X 6 mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less than 1.5 metres below normal ground level, connected to earthing lead of 32 mm X 6 mm galvanised mild steel strip by means of bolts, nuts, check nuts and washers of galvanised iron from earth plate to test point upto 7.5 metre including all as shown in electrical plate No. 3 of SSR Part I (2009) including necessary concrete chamber in cement concrete M15 (Nominal Mix) using 20 mm nominal size coarse aggregate, precast RCC cover slab in cement concrete M15 (Nominal mix) using 20 mm nominal size coarse aggregate of size 40 cm X 40 cm X 5 cm reinforced with 8 mm dia TMT bars @ 150 mm c/c both ways with one handle for lifting made out of 8 mm dia bar, GI funnel, GI wire mesh filter, 20 mm dia GI pipe medium grade for watering, 40 mm dia GI pipe medium grade for protection of earthing lead, charcoal or coke and salt in alternate layers including necessary excavation and earth work in any type of soil/ strata and testing complete all as specified and as directed by the Engineer-in-charge.

M & L for servicing of 33 kV control and relay panel including checking for all loose connections, replacement of burnt-out cables, replacement of unserviceable MCBs, necessary electrical connections to transformers complete all as specified and as directed.

S & F in repairs master trip replay for 11 kV VBC including necessary electrical connections to panels complete all as specified and as directed.

Material and Labour for the following testing of transformer of any capacity on the site at different locations under the GE and submission of reports to the Engineer-in-Charge complete all as specified and as directed. (a) Operational checking of the protection system (b) Insulation resistance (IR) measurement (c) Measurement of capacitor bushings (d) Measurement of voltage ratio (turns ratio) (e) Measurement of vector group or polarity of the transformer (f) Measuring of winding resistance (g) Measurement of vibration of the transformer (h) Test of the magnetic balance of the transformer (i) A measure of Frequency Balance Response (FRA) of the transformer (j) Measurement of floating neutral point (k) The measure of short-circuit impedance and magnetizing current of the transformer (l) Operational measurement on OLTC’S (m) Measurement of stability of differential, REF of transformer (n) Measurement of bushing current transformers (BCT’S)

PRADEEP SISODIYA

PRADEEP TIWARI CONTRACTOR

S R BUILDERS AND SUPPLIERS

virendera singh