CWEAFJ-30/2021-22 REPAIR / MAINT OF HT TRANSFORMERS, VCB, OH LINES HT UG CABLE GODs HT PANELS AND ALLIED WORKS AT AF STN JAMMU AND KALUCHAK

Amount

Demolition of cement concrete (un-reinforced) in any description and in any position not otherwise specially provided for complete all as specified .

Excavating in trenches, not exceeding 1.5metre wide and not exceeding 1.5metre depth for foundation, etc., and getting out in any type of soil, complete all as specified and directed.

Excavating in trenches, not exceeding 1.5metre wide and exceeding 1.5metre depth but not exceeding 3.0metre depth for foundation, etc., and getting out in any type of soil, complete all as specified and directed.

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

Removing excavated soils to a distance exceeding 50m but not exceeding 100m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

Cement concrete type D-2 1:4:8 (using 40mm graded crushed stone aggregate) as in foundation filling and mass concrete, complete all as specified and directed.

Cement concrete type B-1 1:2:4 (using 20mm graded crushed stone aggregate) as in coping of poles, complete all as specified and directed.

Brick work with sub class ‘B’ bricks, straight or curved on plan exceeding 6m mean radius built in in cement mortar 1:6, complete including demolition of old unserviceable brickwork all as specified and directed.

Rendering 15mm thick in cement mortar 1:4 on brick work or concrete surfaces, finished even and smooth without using extra cement, complete all as specified.

Taking down old unserviceable Poles any description and removing from site as contractor's property comlete all as specified and as directed.

Steel Tubular swaged poles type 410 SP-55 (11.0 mtr long) conforming to IS : 2713 Part-I to III 1980, complete with 6 mm thick mild steel base plate, finial taper plug, MS bolts, nuts, screws including painting upto 1.5metre above PCC coping in black and white strips 05 Nos of 30cms each starting from the bottom of the pole and two coats epoxy based paint aluminium grade finish to the remaining external surface over one coat of primer and writing Pole No complete including taking down old unserviceable Pole all as specified and as directed.

Steel Tubular swaged poles type 410 SP-31 (9.0 mtr long) conforming to IS : 2713 Part-I to III 1980, complete with 6 mm thick mild steel base plate, finial taper plug, MS bolts, nuts, screws including painting upto 1.5metre above PCC coping in black and white strips 05 Nos of 30cms each starting from the bottom of the pole and two coats epoxy based paint aluminium grade finish to the remaining external surface over one coat of primer and writing Pole No complete including taking down old unserviceable Pole all as specified and as directed.

Cross arm bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, drilling holes for bolts, in any shape or size as indicated or directed and also inclusive of two coats of aluminium paint over one coat of red oxide primer including dismantling / taking down old unserviceable structural steel all as specified and as directed.

Aluminium conductor steel reinforced (ACSR) including binding to insulator with suitable size of binding wire and size of conductor Weasel (6/1 x 2.59 mm), Squirrel (6/1 x 2.11mm) or Ferret (6/1 x 3.00 mm) all as specified and as directed.

Pin type porcelain vitreous white, brown or green insulator including one galvanized mild steel spindle, two galvanized iron washers and one galvanized iron nut, 150mm height, 150mm dia for 11000 volt complete including taking down old unserviceable insulator complete all as specified and directed.

Switch Air break, gang operated (GOD) with 15 Nos insulators in replacement, outdoor type, Three Pole mechanically operated, suitable for vertical installation, Single break, provided with locking arrangements consisting of MS channel, HT Post type insulator copper alloy, high Pressure, Assembly operating rod 25 mm dia GI pipe medium grade for operating from 1.2 metre above Ground Level with locking arrangement complete confirming to IS-1318 of 1972 rated voltage 11 KV and for current rating 200 Amps complete, including taking down old unserviceable GOD all as specified and directed.

Female Contact suitable for existing GOD complete as directed.

Male Contact suitable for existing GOD complete as directed.

Supply only flexible Copper Earthing Strip suitable for GOD complete as directed.

Lightning Arrestors, expulsion type, complete with all fittings, transmission class, discharge capacity 65 KA suitable for 11000 Volts grade and entire satisfaction complete, including taking down old unserviceable LA all as specified and directed.

Cutting and trimming of trees and branches to clear the over head line in the arc of HT/LT over head line feeders and removal of the trimmed branches of trees complete all as specified and directed. Notes : 1. Any ACSR conductor damaged during the cuttings of trees / branches shall be repaired and jointed / fixed by the contractor, to the entire satisfaction of Engr-in-Charge, without any extra cost and nothing extra shall be admissible from the department on this account what-so-ever. 2. The cutting / trimming of tree branches shall be done to at least 3.00 metre radius of OH line. 3. The unit of measurement is 'SPAN' i.e. distance covered between two adjacent poles.

Cutting wild grass, bushes, creepers, unwanted vegetations etc. from surroundings of Poles / Stays including cleaning creeper climbed on Poles as and when directed and removing the spoil and depositing the same to a distance not excceding 100metres as directed. Notes : 1. Area 90cms all around the Pole / Stay shall constitute 01 unit for the purpose of measurement. 2. This item shall be operated upto a maximum of three times in the same location during the entire period of the contract.

Painting of Steel Tubular pole any type with cross arms with one coat of aluminium paint after preparation of surfaces of pole / cross arms by scrapping of old paint, cleaning of all rusted surface and painting upto 1.5metre above PCC coping in alternate black and yellow strips 05 Nos of 30cms each starting from the bottom of the pole and two coats epoxy based paint aluminium grade finish to the remaining external surface of pole and cross arms structure over one coat of primer and marking of MES No complete all as specified and as directed.

Anti-climbing device spikes type fabricated out of M.S. bars (round, square and flat) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole and duly painted with synthetic enamel aluminium / smoke grey paint over a coat of primer complete, including taking down old unserviceable Anti-climbing device all as specified and directed

Danger notice plate, for LT, of size 25cm x 20cm x 1.5mm thick mild steel sheet, vitreous enameled, white with letters, figures and conventional Skull & Bones in signal red colour and fixed with MS clamps, bolts and nuts of appropriate size, all as specified and as directed.

Danger notice plate, for HT, of size 25cm x 20cm x 1.5mm thick mild steel sheet, vitreous enameled, white with letters, figures and conventional Skull & Bones in signal red colour and fixed with MS clamps, bolts and nuts of appropriate size, all as specified and as directed.

Supplying laying jointing and testing XLPE insulated, PVC bedded, galvanised steel strips armoured heavy duty electric power cable with stranded aluminium conductor suitable for rated voltage of 11000 Volt grade, 3 Core x 95 Sqmm conforming to IS 7098 Part-2) 2011 with upto date amendments and laid in trenches / ducts / pipe or on poles complete, including taking down old existing unserviceable cable all as specified and directed.

Sand cushioning to underground cables using new dry river sand laid in trenches 8cm thick below the cable and 15cm thick above the cable after laying and stretching the cable complete, punned to 18cm, complete all as specified and directed Note : Punned thickness of 18cms shall be measured for payment.

Supplying and laying un-reinforced precast concrete cable cover, Class HVP, type 1 with peak, size 300mm x 180mm x 40mm, complete all as specified and as directed.

Steel pipe galvanised light grade, 80 mm bore laid in trenches or under ground/floor or road of fixed with pole for protection of cable including GI clamps with bolts nuts and washers complete all as specified and directed.

Steel pipe galvanised light grade, 100 mm bore laid in trenches or under ground/floor or road of fixed with pole for protection of cable including GI clamps with bolts nuts and washers complete all as specified and directed.

Cable Route Indicator made out of 45 x 45 x 5 mm angle iron, 80 mm long embedded in PCC block of suitable size with moulded lettter HT CABLE or LT CABLE suitably incribed on CI circular plate 8 mm thick 100 dia complete incl neccessary PCC 1:3:6, type C-2 (using 40 mm graded aggrregate) block of suitable size and neccessary earth work and excavation all as specified and directed.

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 to 95 Sqmm complete all as specified and as directed.

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 to 185 Sqmm complete all as specified and as directed.

Cable jointing kit for 11 KV (earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 Sqmm complete all as specified and as directed.

Retro Reflective Sign Board of size 900mm x 750mm made of 6mm thick ACP sheet fixed with screws on frame made of MS Angle of size 40 x 40 x 5mm, vertically supported with angle iron of size 50 x 50 x 6mm of height not less than 2.0 metre and showing content as follows :-

CAUTION LT/HT .440/11000 VOLTS UNDER GROUND CABLE PASSING IN THE AREA. BEFORE EXCAVATION IN THE AREA PLEASE CONTACT MES POWER HOUSE / JE E/M ON TELEPHONE NO - 7881

Notes :- 1. The background of board shall be of blue colour retro reflective tape and letters shall be in white retro reflective tape. 2. The size of letters and description shall be as per sample approved by Engineer-in-Charge. 3. Steel frame and legs of board shall be painted with two coats of synthetic enamel paint over a coat of red oxide and the cost of the same shall be deemed to be included in the rate quoted by the Contractor. 4. The necessary PCC work and excavation shall be measured and paid separately under respective items.

Servicing of Step Up / Down Transformer 63 KVA to 350 KVA after dismantling HT / LT side cable terminals, earthing connections, opening top cover, taking out transformer oil, transformer core carefully, cleaning the sludge and carbon particle from main tank and conservator tank, taking out burnt HT / LT bush rods and HT / LT bushing and re-assembling, refilling the transformer oil, making electrical / earthing connections using suitable size of Aluminium / Copper lugs after repair / replacement of burnt / unserviceable parts including testing and recommissioning complete all as specified and directed. Note : The major parts required for the repair will be measured and paid separately under relevant items. The nuts, bolts, washers required for repairing are deemed to be including in the quoted rates.

Gasket Set 6 mm thick superior quality on top cover plate of the transformer of any capacity 63 KVA to 200 KVA all as specified and directed.

Gasket Set 6 mm thick superior quality on top cover plate of the transformer of any capacity 250 KVA to 350 KVA all as specified and directed.

LT Porcelain bushing with brass stud screwed with brass nuts, bolts and cork washer for transformer of capacity 63 KVA to 200 KVA, 415 volts Three Phase 4 wire system all as specified and as directed.

LT Porcelain bushing with brass stud screwed with brass nuts, bolts and cork washer for transformer of capacity 250 KVA to 350 KVA, 415 volts Three Phase 4 wire system all as specified and as directed.

HT 11 KV porcelain bushing with brass stud screwed with brass nuts, bolts and cork washer for transformer of capacity 63 KVA to 200 KVA all as specified and directed.

HT 11 KV porcelain bushing with brass stud screwed with brass nuts, bolts and cork washer for transformer of capacity 250 KVA to 350 KVA all as specified and directed.

Rewinding Of Transformer and Supply and replacement of HT coil made out of super enameled copper wire of appropriate size including suitable winding material and dry the wounded coil heat in heating chamber as per prescribed temperature after heating refix in same core and test resistance of each HT coil before connecting each other complete all as specified and as directed.

Rewinding Of Transformer and Supply and replacement of LT coil made out of copper strip including suitable winding material and dry the wounded coil heat in heating chamber as per prescribed temperature after heating refix in same core and test resistance of each HT coil before connecting each other complete all as specified and as directed.

Supply and Replacement of Breather With Silica Gel Suitable for Transformer up to Capacity 315 KVA complete all as specified and as directed.

Spray Painting of complete Transformer of capacity 100 KVA to 325 KVA with two coats of heat resistant weather proof grey synthetic enamel paint after cleaning / removing dust, rust or carbon etc. including writing MES No / SM No complete all as specified and as directed.

Supply, filling and top up with new Transformer Oil of dielectric strength more than 40 KV at 2.5mm gap confirming to IS : 335-1993 complete all as specified and as directed.

Dehydration of transformer oil by using filtration plant of suitable capacity and removing the moisture / dust till obtaining the oil dielectric strength 35 KV at 2.5mm gap and above for various transformer / voltage stabilizer of any size located at different substations, complete all as specified and as directed.

Shifting of Transformer / Voltage Stabilizer From Site to Work Shop and back for Repair / re-alignment with the help of crane and including disconnecting from incoming and outgoing cables for pre-inspection by lifting of assembly and repairing / replacement of worn out spare parts and testing after re-installation in the pre-existing position after repair complete all as directed.

Taking out Servo Voltage Stabilizer of capacity exceeding 300KVA but not exceeding 400 KVA Three Phase, 4 wire, AC supply 440 V for Unbalanced / Balanced Load, Oil Cooled, from foundation after disconnecting all electrical connections etc. and dismantling for Pre-inspection by lifting of assembly and repairing / replacement of worn out parts and testing after re-installation on same foundation complete all as directed.

Taking out Servo Voltage Stabilizer of capacity exceeding 200KVA but not exceeding 300 KVA Three Phase, 4 wire, AC supply 440 V for Unbalanced / Balanced Load, Oil Cooled, from foundation after disconnecting all electrical connections etc. and dismantling for Pre-inspection by lifting of assembly and repairing / replacement of worn out parts and testing after re-installation on same foundation complete all as directed.

Taking out Servo Voltage Stabilizer of capacity exceeding 100 KVA but not exceeding 200 KVA Three Phase, 4 wire, AC supply 440 V for Unbalanced / Balanced Load, Oil Cooled, from foundation after disconnecting all electrical connections etc. and dismantling for Pre-inspection by lifting of assembly and repairing / replacement of worn out parts and testing after re-installation on same foundation complete all as directed.

Taking out Servo Voltage Stabilizer of capacity exceeding 30 KVA but not exceeding 100 KVA Three Phase, 4 wire, AC supply 440 V for Unbalanced / Balanced Load, Oil Cooled, from foundation after disconnecting all electrical connections etc. and dismantling for Pre-inspection by lifting of assembly and repairing / replacement of worn out parts and testing after re-installation on same foundation complete all as directed.

Taking out Servo Voltage Stabilizer of capacity exceeding 15 KVA but not exceeding 30 KVA Three Phase, 4 wire, AC supply 440 V for Unbalanced / Balanced Load, Oil Cooled, from foundation after disconnecting all electrical connections etc. and dismantling for Pre-inspection by lifting of assembly and repairing / replacement of worn out parts and testing after re-installation on same foundation complete all as directed. Note : The Parts required for replacement shall be measured and paid separately under relevant item(s).

Taking out burnt winding alongwith allied insulation materials of Stabiliser and Material & Labour for Rewinding of Main Transformer of Stabilizer of any capacity with super enamelled copper winding wire of appropriate gauge and cleaning of rust, carbon, deposit etc. complete all as specified and as directed.

Rewinding of Dimmer Coil (various) of Stabilizer of any capacity with super enamelled copper winding wire of appropriate gauge as per existing pattern alongwith insulating material and made the surface for suitable contact with carbon bush complete after removing existing burnt winding wire and cleaing complete all as specified and as directed.

Taking out unserviceable Dimmer Coil any size and rating complete as directed.

Fixing in Replacement of Dimmer Stat 150 Amps Oil Cooled Single Phase complete as directed.

Fixing in Replacement of Dimmer Stat 75 Amps Oil Cooled Single Phase complete as directed.

Fixing in Replacement of Dimmer Stat 40 Amps Oil Cooled Single Phase complete as directed.

Fixing in Replacement of Dimmer Stat 20 Amps Oil Cooled Single Phase complete as directed.

Fixing in replacement Carbon Bush for Voltage Stabilizer 10 KVA capacity Three Phase for Un-balanced load complete as directed.

Fixing in replacement Carbon Bush for Voltage Stabilizer 15 to 50 KVA capacity Three Phase for Un-balanced load complete as directed.

Fixing in replacement Carbon Bush for Voltage Stabilizer 60 to 200 KVA capacity Three Phase for Un-balanced load complete as directed.

Fixing in replacement Carbon Bush for Voltage Stabilizer 250 to 300 KVA capacity Three Phase for Un-balanced load complete as directed.

Fixing in replacement Carbon Bush for Voltage Stabilizer 315 to 400 KVA capacity Three Phase for Un-balanced load complete as directed.

Supply and fixing of Digital Amp Meter of rating 400 Amps complete as directed.

Supply and fixing of Digital Voltmeter of rating 500 Volts complete as directed.

Fixing in replacement, CT ratio 100/5 Amps complete as directed.

Fixing in replacement, CT ratio 200/5 Amps complete as directed.

Fixing in replacement, CT ratio 300/5 Amps complete as directed.

Fixing in replacement, CT ratio 400/5 Amps complete as directed.

Fixing in replacement, Limit Switch to control the up and down variation of Voltage at correct ratio on the secondary side complete as directed.

Fixing in replacement, Auxiliary (Pulse) Transformer heavy duty suitable with the Load and Voltage variation for Low and High Voltage variation complete as directed.

Fixing in replacement, Indicator Lamp of any colour (R/Y/B) with neon lamp for showing the different phases of the Stabilizer complete with wiring complete as directed.

Fixing in replacement, Push Button Switch heavy duty of any colour for raising and lowering the voltage manually complete with wiring complete as directed.

Fixing in replacement, Sensing Control Card (PCB) to control the Voltage variation at upper and lower limit complete with wiring reqired complete as directed.

Repair / Servicing of VCB 11 KV, any capacity installed at main power house carefully by opening the VCB chamber, bus bar chamber, cable chamber, low voltage compartment and PT compartment after disconnecting the load and placing earthing switch to 'ON' position for repair/ calibration of the following including assembling/ closing the parts carefully as opened and testing complete i.e. resistance of main circuit, operation of functional lock, signaling devices, suitability and correct operation of protections, control instruments and electric connections of circuit breaker, operating mechanism for smooth and trouble free operation of the system all as specified :

(a) Adjustment of contact gap for proper functioning. (b) Adjustment of spring operated front shutter for operator's safety. (c) Calibration of circuit breaker for over current, short circuit and earth fault with the help of CT and associated to meet optimum operational requirement. (d) Cleaning of VCB with air blower and removing dust particals. (e) Cleaning and arching contact gap of vaccume intreputer if gap exceeds permissible limits. (f) Checking/ repair replacement of all electrical wiring of electric/ manual operation including measuring IR values.

Servicing, cleaning and greasing of HT 11 KV incoming and outgoing VCBs of Make Kirloskar as directed.

IDMT relay 3 PH OC+EF (50,51,50N,51N) Model MC 31Anx (MC31ANX2200) Make : L&T/ABB / Schieder

3PH TSC Relay OC + EF model MC61AnX (MC61ANX2200) Make : L&T / ABB / Schneider

Single Pole OC OR EF Relay Model MC12 20-110V AC / DC (MC12AA50X00 Make : L&T / ABB / Schneider

Lockout Relay 3 NO + 2NC220VDC (L1H32DC220X) Make : L&T / ABB / Schieder

Auxiliary Relay single element 02 N/O +2 N/C 220 VDC (A1A22DC220X) Make : L&T / ABB / Schneider

Indicator 24 V

Indicator 63.3 Volt

Trip Natural and Close Switch 25 A

6 Window Annunciator

Earthing complete with galvanized mild steel earth plate electrode size 600mm x 600mm x 6mm thick buried directly in ground (preferably in vertical position) earth pit not less than 2.25 meter below normal ground level with top edge of the earth plate not less 1.5 meter (BGL) connected to galvanized iron earth lead wire 4mm dia by means of bolts, nuts, check nut and washer of galvanized iron including PCC pit in RCC 1:2:4 type B-1, precast RCC cover with suitable handle, excavation and earth work in any type of soil, 20mm bore “medium grade” galvanized iron water tubing fixed with cast iron funnel and wire mesh and 15mm bore “light grade” galvanized iron protection pipe for earth lead wire upto 5m length, charcoal, common salt, complete all as shown in EP No 3 of SSR 2009 Part-I, connected to test point complete, all as specified and testing on completion.

Earthing complete with Galvanised steel earth plate electrode 600 mm x 600 mm x 6mm thick, buried directly in the ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.50 mtr below ground level connected to GI Strip of size 25 x 4mm as earth lead by means of bolts, nuts and washers of GI up to test point, GI tubing 40 mm bore light grade protection pipe, GI watering pipe 20mm bore medium grade with funnel and wire mesh, alternate layer of charcoal and salt, 40mm thick including earth work in any type of soil, removal of surplus soil to a distance n.exc.50m) and connecting, testing on completion, all as shown on Electric Plate No. 03 of SSR-2009 Part-I, complete all as directed.

Earth continuity conductor or main earthing lead using 4 mm dia galvanised iron or steel wire fixed to wall on batten or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required including taking down old wire complete all as specified and directed.

Earth continuity conductor or main earthing lead using 25 x 4mm galvanised steel strip fixed to wall on batten or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation, etc. as required including porcelain insulator saddle at the spacing nort exceeding 400mm including taking down old strip complete all as specified and directed.

Earth continuity conductor or main earthing lead using 32 x 6mm galvanised steel strip fixed to wall on batten or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation, etc. as required including porcelain insulator saddle at the spacing nort exceeding 400mm including taking down old strip complete all as specified and directed.

bamral builder

MAMTA ENTERPRISES

JCC ENGINEERS PRIVATE LIMITED

Bidder Name

Mahajan Construction Co

MAMTA ENTERPRISES

bamral builder

JCC ENGINEERS PRIVATE LIMITED