REPAIR TO TRANSFORMER HT OH LINE HT CABLE GOD LT PANELS LT CABLES EARTHING CABLES AND ALLIED WORKS AT DIBRUGARH CHABUA GANESHBARI FSD PANITOLA AND LAIPULI AREA UNDER GE DINJAN

Amount

Surface dressing of installation/sub station area by removing of grass, creepers, etc. in fencing and surrounding area of installation building and maintaing throughout the contract period complete all as specified and as directed.

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 water supply pipes lines etc or not exceeding 10 sqm on plan and not exceeding 1.5 m in depth and getting out in soft & loose soil complete all as specified and as directed.

Excavating in trenches not exceeding 1.5 m wide and exceeding 1.5 m but not exceeding 3.0 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 exceeding 1.5 m but not exceeding 3 m in depth and getting out in soft & loose 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 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 all as specified and as directed.

Supply & spreading in trenches 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.

Laying only 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 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.

Supplying and laying un-reinforced precast concrete cable cover, classClass LV, Type I, flat, size 250 mm x 150mm x 40mm complete all as specified and directed.

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 as directed.

Supply, laying and testing cross linked polyethylene (XLPE) insulated, PVC sheathed cables for working voltages 11 kV, three phase, earthed system, 3 core, screened, armoured power cable, 95 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 including taking down complete all as specified and as directed.

Laying only 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, 95 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.

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

Supply ,laying & testing in trenches / pole cable XLPE insulated screened PVC bedded galvanised steel strip or wire, armoured electric power cable (heavy duty) with stranded aluminium conductor 11000 volts earthed grade of 185 Sqmm, 3.5 core with all fitting accessories complete all as specified and as directed.

Description as per item No. 15 here-in-before but 95 Sqmm, 3.5 core all as specified and as directed.

Description as per item No. 15 here-in-before but 35 Sqmm, 3.5 core all as specified and as directed.

Description as per item No. 15 here-in-before but 25 Sqmm, 3.5 core all as specified and as directed.

Description as per item No. 15 here-in-before but 16 Sqmm, 2 core all as specified and as directed.

S&F in repair 50mm bore tubing “light grade” in trenches/ on pole for protection of cables complete all as specified and as directed.

Description as per item No. 20 here-in-before but 32mm bore all as specified and as directed.

Description as per item No. 20 here-in-before but 80mm bore all as specified and as directed.

Opening top cover of transformer of capacity 50 kVA to 250 kVA at site for replacement of old unserviceable parts/components & reassembling & testing complete all as specified and as directed. (Note: Unserviceable spare parts/ components shall be measured and paid separately)

Replacement of existing unserviceable HT bushing complete with HT brass rod including gasket set (Set of three) etc. with new set complete up to 100 KVA transformer.

Replacement of existing unserviceable LT bushing complete with LT brass rod including gasket set etc. (set of four) with new complete upto 100 KVA transformer

Replacement of existing unserviceable HT bushing complete with HT brass rod including gasket set (Set of three) etc. with new set complete of 150 to 250 KVA Transformer.

Replacement of existing unserviceable LT bushing complete with LT brass rod including gasket set etc. (set of four) with new complete of 150 to 250 KVA Transformer.

Supply only top cover gasket set as per existing size and shape complete for 50 to 250 kVA capacity transformers.

Supply only temperature gauge in repair of range 0⁰ to 200⁰C for indication of temperature rise in transformer oil for transformers upto 250 kVA capacity including taking out old unsv complete all as specified..

Supply only breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity from 500 kVA.

Supply only breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity from 100 to 250 kVA.

M & L for spray painting of transformers (any type power or distribution)) of capacity upto and including 100 to 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 .

Supply only new transformer oil of dielectric strength not be less than 60 kV and conforming to IS-335 of 1993 for filling/ topping up oil of transformer up to desired level complete all as directed.

Dehydration and filtration of existing transformer oil of transformer/ Voltage Stabilizer 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).

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 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.

M&L for GI strip of 32mm x 6mm for extending the 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 and fix as in repairs complete all as specified and as directed.

Disconnecting, taking down distribution transformer outdoor type 11 kV /415 volts having capacity upto and including 63/75/100/150 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 all as specified and as directed. 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 100 kVA, 150 kVA, 200 kVA, 250 KVA, 500 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 all as specified and as directed. 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.

M & L for rewinding of coils on primary/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.

S & F in repairs ratio switch 5 position suitable for transformer of capacity 63 kVA to 250 kVA complete all as specified and as directed.

S & F in repairs 32 mm dia gunmetal drain valve of transformer as per existing one complete all as specified and as directed.

S & F in repairs 25 mm dia gunmetal drain valve of transformer as per existing one complete all as specified and as directed.

Dismantling air break gang operated switches vertical/horizontal mounted including insulators and operating mechanism for repair/ replacement of broken/worn out components and insulators etc. (spare/components for replacement to be measured and paid seprately)

S & F in repair 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, with 09 no of insulators, 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 repair drop out fuse unit expulsion type for outdoor air brake gang operated switches single pole mounted and including insulator for 11 kV working pressure fixed to and including MS channel with nuts, bolts, washers etc. synthetic bounded fuse carrying tube complete with line taps and suitable for current carryout capacity upto 25Amps 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 all as specified and as directed.

Dismantling HT/LT insulators any type, any size by diconnecting all electrical connections complete all as specified and as directed.

S & F disc type insulator, porcelain, vitreous 145 mm high and 255 mm dia ball and socket type, white, brown or green, two-in-series assembly for tension with tension clamps for conductors, working pressure 11000 volts complete all as specified and as directed.

S & F pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia for 11000 volts grade complete all as specified and as directed.

M&L plain cement concrete 1:3:6 type C2 (using 40 mm graded stone aggregate) as in foundation filling and mass concrete etc complete all as specified and as directed.

M&L for plain cement concrete 1:3:6 type C1, (using 20mm graded stone aggregate) for coping of poles and stay including necessary form work complete all as specified and as directed.

Dismantling steel poles/ struts, any size, setting aside for reuse within 50 metres complete all as specified and as directed.

M & L for steel tubular swaged pole 410 SP-55 (11.0 metre long) seamless type, including CI base plate, finial taper plug, bolts, nuts & screws as per IS 2713 Part -I & II including painting with two coats of bituminious paint over a coat of red oxide zinc chrome primer on exposed portion and making strips of width 30 cm upto 1.5 m from the ground level in black and yellow shade in alternate layer including numbering of poles using two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer and two coats of anticorrosive paint over a coat of red oxide primer to embedded portion of pole including making good to match existing area complete all as specified and as directed. Note- Earthwork shall be measured and paid seperately. Volume occupied by steel pole shall be deducted to derive the quantity of PCC all as specified and as directed.

Dismantling of old/rusted aluminium conductor steel reinforced of any size and removing the same from site of work all as specified and as directed.

Dismantling cross-arms of mild steel channel or angle sections etc. complete and setting aside by diconnecting all electrical connections for re-use or removing to store or for schedule of credit all as specified and as directed.

Dismantling insulators any type, any size all as specified and as directed.

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.

M & L for preparing and painting 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 yellow 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 cradles, hexagonal/rectangular, fabricated with galvanised steel wire 3.15 mm or 4 mm dia complete all as specified and as directed.

Supply and fix male contact /moving contact blade for gang operated air break switch all as specified and as directed.

Supply and fix female contact/fix contact jaw for gang operated air break switch all as specified and as directed.

Supply and fix tinned copper flexible jumper for gang operated air break switch all as specified and as directed.

Supply and fix mild steel jumper carrier for gang operated air break switch all as specified and as directed.

Supply and fix back connector plate for gang operated air break switch all as specified and as directed.

Supply & applying of petroleum jelly for gang operated switch complete all as specified and as directed.

M & L for danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with mild steel clamps, bolts and nuts of approved size, for LT, 200 mm X 150 mm complete all as specified and as directed.

M & L stay assembly complete with all accessories such as mild steel galvanized flat iron stay clamp, 7/4 mild steel galvanized stay wire, mild steel galvanized stay bow, thimbles, 20mm dia mild steel galvanized stay rod and mild steel galvanized stay-plate all as shown in electrical plate No 1 of SSR Part-I complete all as specified and as directed.

Cutting tree branches, any girth, below, top and around the HT OH line and clearing not less than two mtrs around the line and keeping the line clearance through out the contract period by trimming the branches repeatedly as many times as required depending on the growth of new branches including clearing the site by depositing the branches to a distance not exceeding 50 m complete all as specified and as directed.

M&L hard core of broken stones n exc 63 mm deposited, spread andn levelled inlayers n exc. 15 cm thick watered and rammed to a true surface all as specified and as directed.

M&L for Cement concrete type B-2, 1:2:4 (40 mm graded aggregate) 100 mm thick all as specified and as directed.

Demolition of cement concrete (Unreinforceed) of any description in ground floor n exc 15cm thickness (Below or above ground level) all as specified and as directed.

M & L for 60 mm thick factory made cement concrete interlocking paver block of M35 grade confirming to IS 15658-2006 made by block making machine with strong vibrating compaction ,of approved size,design & shape,cast in rubber mould, glossy finish of approved colour ,laid in required colour and pattern over and including 50 mm thick compacted bed of fine sand, filling the joints with fine sand etc all complete all as specified and directed.

Supply and fix for precast PCC cable route indicator duly marked and painted for HT/LT cables of size 80x25x7.5 cm with suitable size of base, embossed with lettering "MES HT Cable", complete all as specified and as directed.

S&F new PVC cable Junction Box IP66 "halogen free and weather proof" for out door installation size not less than 200 x 150 x 100 mm suitable for street light incoming and outgoing cables up to 10 to 25 sqmm 4 core (with terminal) & inclusive of MCB SP 10 Amp, 60A 04 strip aluminium Bus Bar, including nuts,bolts,cable glands & MS clamps fixed to pole all as specified and as directed.

Supply, laying & testing PVC insulated, PVC sheathed cable galvanized steel strip or wire unarmoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 sq mm ,2 core, 1100 Volts grade passed throuh PVC conduit medium grade of size Min 20mm complete all as specified and directed.

Supply, install, testing and commissioning outdoor type LT panel of size 1.2m x 1.2m x 0.6m , factory made totally enclosed dust and vermin proof , double steef shutter in front and single leaf shutter in rear side made of 3.15 mm thick CRCA sheet, duly fabricated and having proper locking arrangement in both ront and rear door painted with powder coated paint and Copper bus bar 400 amps suitable for 500 volts, 50 Hz , 3 phase 4 wire system and comprising with and including following accesories and mounted on PCC platform all around the panel board complete with the following items:- Incoming :- (a) MCCB, 4 Pole,160-200A, 415 V, 36 kA. (I/C). WithThermal Magnetic release. (b) 3 Phase LED Voltmeter Cl-1 (c) Phase indicator lamps (RYB) -set of 3. (d) Copper bus bar 4 strip - 400 amps (Length should not be less than .9m) (e) Internal connection by Copper strip from mcb/mccb to busbar and busbar to mccb/mcb etc. Outgoing :- (a) MCCB, 4 Pole, 125-160A 415 V 36 kA - 02 nos With thermal and magnetic release. (b) MCB,TPN, 63A, 420 V, 18 kA - 04 Nos Note : Foundation to be included in the quoted price

Supply, install, testing and commissioning outdoor type LT panel of size 1.2m x 1.2m x 0.6m , factory made totally enclosed dust and vermin proof , double steef shutter in front and single leaf shutter in rear side made of 3.15 mm thick CRCA sheet, duly fabricated and having proper locking arrangement in both ront and rear door painted with powder coated paint and Copper bus bar 250 amps suitable for 500 volts, 50 Hz , 3 phase 4 wire system and comprising with and including following accesories and mounted on PCC platform all around the panel board complete with the following items:- Incoming :- (a) MCCB, 4 Pole, 100-125A 415 V 36 kA - 01 no With thermal and magnetic release Outgoing :- (a) MCCB, 4 Pole, 63-100A 415 V 36 kA - 02 nos With thermal and magnetic release (b) MCB,TPN, 63A, 420 V, 18 kA - 03 Nos. (c) MCB,TPN, 63A, 420 V, 18 kA - 03 Nos. (d) Copper bus bar 4 strip - 250 amps (Length should not be less than 0.8m). (e) Internal connection by Copper strip from mcb/mccb to busbar and busbar to mccb/mcb etc Note : Foundation to be included in the quoted price

M&L for horizantal boring/drilling hole mannual under the road in soft/loose soil without cutting/disturbing the existing road and inserting GI pipe 80/50/40/32mm bore for drawing the cables complete all as directed and specified. (Note: (i) Cost of acessories required for making hole/bore deemed to be included in the quoted rate. (ii) GI pipe has been measured and paid separately)

R.D.CONSTRUCTION (BID ID -3282528)

M/s PRABIR ENTERPRISE (BID ID -3282750)

R D Enterprises (BID ID -3282801)

FREEZCON (BID ID -3282344)