REPAIR/MAINTENANCE OF TRANSFORMER, STABILIZER WITH CONNECTED ITEMS AT 213 TC UNDER GE NAGROTA

Amount

M&L for taking down step down transformer 11 KV/0.433 KV of any make mounted on two/four pole structure or on platform / indoor floor mounted carefully from their position after removing electrical connection, earthing leads etc, for executing necessary comprehensive preventive maintenance as well as repairs necessiated, including to and fro transporting to Workshop, and refixing & testing after execution of maint/repair to their original position or to other location as directed of capacity 40 KVA to 315 KVA.

Inspection of defective step down 11 KV / 0.433 upto 315 KVA transformer of any make, installed on plinth/floor/pole mounted, indoor/outdoor type, step opening, removing the top cover of transformer, detecting the fault, rectfying the defect at site except major fault of burnt winding or other. The following tasks if required will be performed :- (a) Step opening of the transformer and removing the transformer top cover for checking/rectified the faults of the transformer. (b) Replacement of defective HT/LT bushes, spindles etc. (c) Refixing the transformer top cover with nuts, bolts and washers. (d) Testing of transformer complete. Note : (i) In case of replacement of LV / HV bushing / spindles / tap changer etc, will be measured and paid for separately under relevant items herein after (ii) Transformer oil (if required) for topping will be measured and paid for separately under relevant item

Filteration, heating and dehydration of transformer oil ( at Site ) on load system, EHV grade having dielectric strength not less than 60 KV with 2 mm gap high viscosity in transformer of cap 40 KVA to 315 KVA as per IS-335 of 1983. The reducing moisture, acidity carbon particle in transformer Oil. Note :- The unit rate quoted by the contractor shall be deemed to include for arrangement of filtration machine and its transporation to various location of installation of transformer

Supply, treating (dehydrating), filling new transformer oil in transformers for topping up levels or for replacement of unfit oil. New oil shall have dielectric strength not less than 60 KV at 2.5 mm Gap and shall be conforming to IS 335. Note : The Empty Barrel is the property of department. Supply should be given in Sealed Containers.

Taking out old breathers from transformer, supplying and fixing new breather dully filled with activated agent i.e silica gel for transformer of capacity 40 KVA to 315 KVA

M&L for dismantling core, taking out damaged coils (HV Coils) from its position for replacement, including supplying and fixing new winded coils with super enamelled copper winding wires of required gauge, number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and as directed by the Engr-in-Charge.

M&L for Reconditioning of LT side coils from its position for replacement including supplying and fixing new winded coils with cotton braided copper wire or strip of approprite size (thickness & breadth) number of turnings & weight to suit with the existing coils with allied insulation materials, packing with spacers etc, complete all as specified and as directed.

Taking out HV procelain bushes from transformers for replacement being damaged, including supply and fixing new HV porcelain, vitreous white, brown or green of voltage grade 11000 V bushes to suit the size of transformers of different makes transformer of capacity 40 KVA upto 315 KVA .

Taking out LV procelain bushes from transformers for replacement being damagd, including supply and fixing new LV porcelain, vitreous white, brown or green of voltage grade 1100 V bushes to suit the size of transformers of different makes transformer of capacity 40KVA upto 315 KVA outdoor.

Taking out worn out HV metallic alloy(brass/gun metal) bush rods, including supply and fixing new HV metallic alloy (gun metal/ brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of capacity 40 KVA to 315 KVA.

Taking out worn out LV metallic alloy (brass/gun metal) bush rods, including supply & fixing new LV metallic alloy (gun metal/brass) bus rods of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes including making necessary connections for transformer of cap 40 KVA to 315 KVA

M & L complete for taking out unserviceable tap changing gear for replacement, including supply & fixing, making connections, testing & commissioning new tap changing gears in transformers of any description / rating and make complete all as specified and as directed.

M & L complete for denting/ repair/ welding out damaged external cooling tube of transformer & bring them to their original shape, of any type and description against of cap 40 KVA to 315 KVA.

Disconnecting and removing to workshop opening for repair automatic voltage stabilizer for automatic operation air cooled servo controlled type input voltage 260-440V and output voltage 420 V cap 50 KVA to 160 KVA complete all as specified and as specified and as directed Note : Replacement of the parts if any found worn out/defective shall be measured and paid for separately.

Dismantling and rewinding of dimmer coil with super enamelled copper winding wire including varnishing tapping and insulating material to get same capacity of 50 KVA to 160 KVA

Replacement of electronic circuit plate complete with DC transformers (PCB cold) complete of capacity 50 KVA to 160 KVA

Dismantling of old servo motor and supply and fix new servo motor of existing size and capacity complete all as specified and directed.

Dismantling of old carbon brush with carbon holder including supplying and fixing new one complete

Replacement of brass studs fixed for input and output of stabilizer with brass nuts for upto 160 KVA cap

S&F 10 mm thick Synthetic insutated mat suitable for 11000 Volt grade (ISI Marked) of size 2mx1mx10mm complete all as specified and directed.

Material and labour for 80 mm dia light grade GI tubing with all fittings for cable protection laid in trenches, fixed on wall/pole with necessary fixing arrangements including dismantling the old pipe.

M & L heat shrink cable end joint suitable termination outdoor type for 3 core cable XLPE with aluminium conductor 11000 volt graded (earthed) of cross sectional area 95 sqmm complete kit with all accessories and jointing material and testing after jointing complete all as specified and directed.

M & L 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 95 sqmm complete all as specified and directed.

Material and labour for earthing complete with galvanised steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25M deep below natural ground level ) with top edge of plate not less than 1.5M below normal ground level, surrounded from all sides alternate packed layer of char coal dust and comman salt and electrode connected with galvanised iron earth lead wire 4mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of SSR part I including necessary earth work in type strata, foundation of pit and wall using PCC 1:3:6 type C1 using 20mm graded crushed stone aggregate 40 mm thick pit cover slab using RCC 1:2:4 type B0 using 12.50 mm graded crushed stone aggregate with 6 mm dia MS bar @ 100 mm C/C both ways GI medium grade 20 mm dia pipe for watering including funnel with wire mesh and 15 mm bore GI light grade pipe for earth lead wire protection up tp 7.5 mtr complete all as directed including testing complete on completion.

All as per Srl item No. 26 above but using 32x6 mm GI earth strip as a earth lead & 40 mm dia light grade GI protection pipe complete all as specified & directed Note for item No. 27 & 28 (i) Rate for GI wire/strip or protection pipe 15mm/40mm dia upto 7.5 RM is included in the quoted rate. (ii) The quantity above the 7.5 RM shall be measured & paid separetely

M&L for earth continuity conductor or main earthing lead 4 mm dia GI or steel wire fixed to wall on batten or recessed or buried in ground or drawn in conduit/pipe all as required at site.

Supply and fixing in repair of aluminium strip 25 x 3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground, complete all as specified and directed.

Supply & fixing for GI strip 32x6mm on wall/batten or recessed or buried in ground all as directed by Engineer-in-Charge.

M&L for MS Framed work as in framed structure (around 4 pole/2 pole/ LT panel/ Transformer) guard bars, framed balusters and similar works complete including PCC work as in foundation complete all as specified.

M&L for Expended metal cut to length, bend to required shape weight not less than 4 kg/Sqm and laying with and including annealed MS wire or welded to steel members complete all as specified.

Supply & Laying in trench and fixed to pole XLPE cable insulated screened, PVC bedded steel strip or wire,armoured, heavy duty electric power cable with aluminium conductor,11000 volts grade, cross-sectional area 95 Sqmm 3 core complete all as specified and directed. (Note : Excavation, returning/filling and removal shall be measured and paid separately).

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth and getting out in any type of soil for errection of HT/LT poles laying of HT/LT UG cables and provision of stay assembly complete

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

Removing excavated material not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point and entire satisfaction of Engnr-in-Charge complete all as specified and directed

Sand dry clean as cushioning to underground electric cable provided with a layer of 8cm deep before laying and 15cm after laying the cable punned down to depth of 10cm above the top of cable complete all as speficied.

M&L for Un-reinforced precast concrete cable cover of size 300x180x40 mm for protection cable, laid transversally along the length of cable complete all as specified and directed.

Lightning arrestor non linear resistor type comply with IS 3070 Part I 1985 for alternating current system multple spark gap suitable for voltage grade 11000 volt discharge cap 65 KA complete with all fittings and all as specified.

Material and labour for switch Air break gang operated Triple pole, mechanically operated mounted on insulator & steel frame with operating mechanisum worked from ground level for current rating upto 200 Amps 11000 Volts all with male & female contacts, post insulator 15 Nos, operating rod, handle etc and renewal of jumpers with heavy duty alkathine pipe cable connections including dismantling of old unserviceable switches vertical/horizontal mounted, including insulator & operating mechanisum for repair/replacement of broken/worn out components and insulators etc complete.

Material & Labour for cross arms, bracings, supports, clamps and back plate fabricated from structural steel sections including nuts, bolts,washers,welding,bending,drilling of holes for bolts in any shape or size as indicated and applying two coats of aluminium paint over a coat of red oxide primer including dismantling of existing mild steel cross arm with clamps from LT poles of any height, place and position.

Aluminium conductor, steel reinforced of any size on LT Poles including straining,binding with insulators with Al/copper binding wire with insulators as in OH conductors, providing PVC Sleeves for jumper fixed "as in repairs" including taking down old one complete all as specified and directed .

M&L for PCC 1:4:8 type D-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:3:6 type C-2 (using 40mm graded crushed stone aggregates) as in foundation filling and mass concrete in foundation of pole/stays etc complete all as specified

M&L for PCC 1:2:4 type B-1 (using 20mm graded crushed stone aggregates) as in coping/above ground level around the pole etc complete all as specified.

Supply and fixing steel tubular pole, swaged, complete with cast iron base plate, finial taper plug, bolts, nuts, washer and screws including painting with two coats of aluminium paint over one coat of red oxide primer on all exposed surfaces and tarring with black bituminous paints to portion embedded in PCC including numbering of poles with two coats of synthetic enamel paint, type 410 SP-55 (11.0 metres long) complete, including disconnecting and taking out old damage PCC pole all as directed .

Painting of 9/11 mtr long steel pole with cross arms, clamp of any length and shape for HT/LT overhead line with two coat of aluminium paint including preparation of the existing surface including marking pole numbers in a 20 cm dia yellow circle & marking three black & two yellow bends width 30 cm by fluorescent paint, from bottom of pole to 1.5 Mtr height, complete all as specified and directed.

Restringing of existing LT over head line of ACSR conductor after opening of binding wire from insulator & bringing the sag within limit rebinding the same with insulator with 16 SWG aluminium wire all including renewal of jumpers with providing alkathin pipe of approved quality of jumpers, reconnecting the service connection after removing the carbon material complete all as directed by Engineer in Charge.

Supply and install HT Bus bar chamber with front & rear opening with proper Locking arrangment factory made, weather and vermin proof having size 90x90x60 cm made out of 3mm thick MS Sheet wih 200 Amp rated Aluminium bus bar and with 11 KV pedestal type HT Insulators 6 No with angle iron frame of size 75x75x6mm duly painted with 2 coats of enameled paint & neccesary PCC work for foundation also including CT/PT and suitable MF meter and indicator Lamp complete all as specified and directed by Engr-in-Charge.

Material and labour for spreading and leveling evenly (any thickness) 20 mm graded stone aggregated complete all as specified and directed.

Supply, installation, testing and commissiong of Feeder piller box out door type ‘factory made’ made out from 16 SWG MS sheet supported with legs of 45cm long made of iron angle 25x25x4mm thick of size 75cm x60cm x45 cm with 04 Nos aluminium bus bar of 400 Amps mounted on porcelain insulator duly drilled hole for cable connection including front and rear side opening with locking arrangement provn for incoming and outgoing cables with glands including painting with two coat of smoke grey synthetic enamel paint over a coat of red oxide primer, including taking down old one complete all as specified and directed by Engineer-in-Charge Note:- Feeder pillar box shall be mounted on brickwork in CM 1:4 not less than 30 cm above ground level with suitable foundation, rendering 15 mm in CM 1:6 and two coats of cement base paint and the rates shall be inclusive in the quoted rate.

M & L for laying connecting and testing of 1100 volts grade LT XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured, heavy duty electric power cable with aluminium conductor of size and type complete all as specified and directed including dismantling and taking down existing old LT cable of any size and type from pole/duct/trench/floor/wall/pipe etc with cable end boxes, glands, bricks etc with necessary disconnection work and keep in safe custody for the following size of cables :- Note:- (i) Excavation and earth work, sand cushioning, bricks & cable protection pipe will be measured & paid under appropriate items of Schedule 'A'

(a) Cable of size 4 core 25 Sq mm

(b) Cable of size 3.5 core 70 Sq mm

(c) Cable of size 3.5 core 95 Sq mm

(d) Cable of size 3.5 core 120 Sq mm

Schedule of credit for Rs. 1,19,975.00 will be deducted from total amount quoted while accepting the bid. Details of schedule of credit are given in tender documents.

M/S KALSI ENGINEERS AND CONTRACTORS (BID ID -3163697)

MAMTA ENTERPRISES (BID ID -3157602)

PROACH ASSOCIATES BUILDERS & ENGINEERS (BID ID -3158253)

M/S SHREE KRISHANA ENERPRISES (BID ID -3156987)