DE HYDRATION AND TOPPING UP TRANSFORMER OIL OF VARIOUS TRANSFORMER STABLIZER AND RENEWAL OF EARTHING AT DIFFERENT LOC UNDER GE 864 EWS, JOB NO-TPP 2024-25

Amount

Material & labour dehydration/cleaning of sprarked/old transformer oil and all other foreign materials from external surface of voltage stablizer and preparing the surface to paint the volatage stablizer body and applying one coat of synthetic enamel paint, with smooth gray paint on back base complete capacity of 20 KVA to 50 KVA Capacity voltage stablizer complete all as specified and directed. Note:-Transformer oil filteration & dehyration by Ultra High Vaccum double stage machine shall be done on existing installation place .

-Ditto- all as per Sl. Item No. 01 above but upto 75 KVA to 100 KVAvoltage stablizer complete all as specified and directed.

-Ditto- all as per Sl. Item No. 01 above but upto 160 KVA to 200KVA voltage stablizer complete all as specified and directed.

-Ditto- all as per Sl. Item No. 01 above but upto 400 KVA voltage stablizer complete all as specified and directed.

Material & labour dehydration/cleaning of sprarked/old transformer oil and all other foreign materials from external surface and preparing the surface to paint the transformer body and applying one coat of synthetic enamel paint, with smooth gray paint on back base complete Capacity 63 KVA distribution transformer complete all as specified and directed. Note:-Transformer oil filteration & dehyration by Ultra High Vaccum double stage machine shall be done on existing installation place .

Ditto- all as per Sl. Item No. 05 above but upto 100 KVA to 200 KVA distribution transformer complete all as specified and directed.

-Ditto- all as per Sl. Item No. 05 above but upto 250 KVA to 315 KVA distribution transformer complete all as specified and directed.

-Ditto- all as per Sl. Item No. 05 above but upto 350 KVA to 500 KVA distribution transformer complete all as specified and directed.

-Ditto- all as per Sl. Item No. 05above but upto 630 KVA to 750 KVA distribution transformer complete all as specified and directed.

M&L for transformer oil for topping up or for renewal in Transformers / Servo voltage stabilizer complete all as specified and as directed. Note: Oil shall be in company sealed barrel having BDV not less than 65KV and Transformer oil topping up or replacement shall be done on existing installation place on same days)

Disconnecting LT cable/ busbar and earthing connetions of Servo voltage stabilizer of capacity 400 KVA, 3 phase from floor with the help of Crane to carry out overhaulling of servo voltage stabilizer comprising of the following:- (i) Draining out oil from chamber. (ii) Opening top cover, disconnecting winding connection from bushing and taking out carefully core assembly complete with winding. (iii) Checking compactness of core & tighening the same where required. (iv) Chemical washing of winding to remove dirt, dust & carbon particles. (v) Cleaning of oil tank to remove oil sludge followed by painting of inner surface to tank with zinc chromate base paint. (vi) Refixing of core & winding assembly and making connection with HT/LT bushing. (vii) Replacement of worn out gaskets & nut/ bolts. (viii) Refilling of oil duly filtered/ dehydrated/ fresh oil( to be measured & paid separately under respective items). (Note: Overhauling of Servo voltage Stabilizer should be done on existing installation place on same day).

-Ditto- all as per Item No 11 here-in-before above but capacity 160 KVA to 200 KVA complete all as specified and directed

-Ditto- all as per Item No 11 here-in-before above but capacity 75 KVA to100 KVA complete all as specified and directed

-Ditto- all as per Item No 11 here-in-before above but capacity 20 KVA to 50 KVA complete all as specified and directed

Supply and install MC TRMS PCB suitable for voltage stablizer of capacity 25 KVA to 400 KVA complete all as specified and directed.

Supply and install Contactor suitable for 25 to 100 KVA voltage stablizer 3 Phase complete all as specified and directed.

Supply and install Contactor suitable for 160 to 400 KVA voltage stablizer 3 Phase complete all as specified and directed.

Supply and install 3Kg motor sync suitable for upto 100 KVA voltage stablizer complete all as specified and directed.

Supply and install RC suitable for 25 KVA to 400 KVA voltage stablizer complete all as specified and directed

Supply and install Carbon bush suitable for 25 KVA to 400 KVA voltage stablizer complete all as specified and directed

Supply and install of Carbon roller assy suitable for 25 KVA to 400 KVA Voltage stablizer complete all as specified and directed

Supply and install of Tag & Tail assy as per sample suitable for 25 KVA to 400 KVA Voltage stablizer complete all as specified and directed

Supply and install of PCB Relay (1003) suitable for 20 KVA to 400 KVA Voltage stablizer complete all as specified and directed

Supply and install of flip flop suitable for 25 KVA to 400 KVA voltage stablizer as per existing sample complete all as specified and directed

Supply and install of Time delay relay suitable for 25 KVA to 400 KVA Voltage stablizer as per existing sample complete all as specified and directed

Supply and install of limit switch (B4C) suitable for 25 KVA to 400 KVA Voltage stablizer complete all as specified and directed

Supply and install of power contractor suitable for 25 to 400 KVA as per existing sample complete all as specified and directed

Supply and install of Aux contractor 4 Nos + 4NC 44W, 230V AC complete suitable for 30 to 400 KVA voltage stablizer complete all as specified and directed by Engr-in-charge.

Disconnecting LT cable/ busbar and earthing connetions of Servo voltage stabilizer of capacity upto 400 KVA, 3 phase from floor with the help of Crane to carry out and shifting of servo voltage stabilizer old location to new location complete all as specified and directed.

Supplying, laying, fixing, jointing and testing LT under ground XLPE insulated, galvanised teel strip or wire armoured heavy duty electric cable with alumimium conductor, 1100 volts grade, cross sectional area 240Sqmm x 1 Core, with electric connection lugs, laid in trenches/under floor or fixed naked with walls / on poles/ in ducts / in GI pipes etc. and including taking down complete all as specified and directed.

S&F MCCB 4 pole 630 Amps breaking capacity 36kA, including spreader link & taking down complete all as specified and directed.

-Ditto- all as per Sl. Item No. 31 above but 500 Amps breaking capacity 36kA,

-Ditto- all as per Sl. Item No. 31 above but 250 Amps breaking capacity 36kA,

-Ditto- all as per Sl. Item No. 31 above but 400 Amps breaking capacity 36kA,

Supply and fixing in renewal of LT switch gear 440 Volts, 3 phase, 4 wire, 50 cycles, Air circuit breaker, cubical manual drawout type complete with microprocessor release of capacity rating up to 800 Amp, 50KA. The protection relays should be provided with in built short circuit protection, overload protection, instantanious protection (IPR), ground fault protection and functional blocking, The ACB should have been designed for an operating voltage upto 690 volts. The rated insulated voltage (UI) should be 1000 volts and the rated impulsive voltage (UMP) shall be 12KV including sheet enclosure and mounted arrangement etc complete all as specified and directed.

Supplying, laying, fixing, jointing and testing LT under ground XLPE insulated, galvanised teel strip or wire armoured heavy duty electric cable with alumimium conductor, 1100 volts grade, cross sectional area 50 Sqmm x 3.5 Core, IS 7098 marked, with electric connection lugs, laid in trenches/under floor or fixed naked with walls / on poles/ in ducts / in GI pipes etc. and including taking down complete all as specified and directed.

-Ditto- all as per Sl. Item No. 37 above but 95 sqmm x 3.5 Core

-Ditto- all as per Sl. Item No.37 above but 120 sqmm x 3.5 Core

-Ditto- all as per Sl. Item No. 37 above but 150 sqmm x 3.5 Core

M&L for transformer oil for topping up or for renewal in Transformers / Servo voltage stabilizer complete all as specified and as directed. Note: Oil shall be in company sealed barrel having BDV not less than 40KV and Transformer oil topping up or renewal shall be done on existing installation place on same days)

M&L for checking /Repairing of wiring and renewal of ring main unit system at sub station including programing in PCB and monitiring device as per sample complete all as specified and as directed.

M & L for earthing complete with galvanized steel earth plate electrode 60 cm x 60 cm x 6mm thick buried directly in ground vertically to a depth not less than 2.5 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr connected to and incl galvanized strip 25x4mm as earth lead up to 7.5 mtr long by means of nuts, bolts, thimbles,check nuts and washers etc made of galvanized iron connected to earthing test point all as shown in electrical plate No 5 of SSR Part-I 1991 and as specified or indicated and testing on completion incl earth work and excavation in any type of soil PCC (1:3:6) type C1 chamber, pre cost slab 40mm thick in cement concrete (1:2:4) type B1 with 8 mm dia MS bars reinforced at 10 cm centre to centre both ways incl funnel with watering pipe wire mesh and lugs, incl test point complete all as specified and as directed

-Ditto- all as per Sl. Item No. 43 above but galvanised 4.0 mm dia earth lead wire.

-Ditto- all as per Sl. Item No. 43 above but galvanised Iron strip 32x6mm as earthing lead

-Ditto- all as per Sl. Item No. 43 above but using copper plate 60x60x3.15mm thick electrode and 20x3 mm copper strip as earthing lead.

M & L for renewal of damaged earth continuity conductor or main earthing lead 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 fer loop earthing etc.as required 25x4mm galvanised iron strip complete all as specified and as directed

-Ditto- all as per Sl. Item No. 47 above but galvanised Iron strip 32x6mm earth lead .

-Ditto- all as per Sl. Item No. 47 above but Aluminium strip 25x3mm earth lead .

-Ditto- all as per Sl. Item No. 47 above but Copper strip 25x3mm earth lead .

M&L for topping up of graded course stone aggregate 20mm to 40 mm of nominal size in base of 2/4 pole (electrical poles) structure and electrical sub stations/Main power house etc complete all as speciried and directed.

Excavation in trenches n. exc. 1.5 mtr in wide and n. exc. 1.5 mtr in depth for laying of underground cable and getting out in soft/loose soil complete all as specified and directed.

Excavation in trenches n. exc. 1.5 mtr in wide and exc. 3 mtr but n exc 1.5mtr in depth for laying of underground cable and getting out in soft/loose soil complete all as specified and directed.

Removing of excavted soil to a distance n. exc. 50 mtr and deposited where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and directed.

M&L for plain cement concrete (1:4:8) type D-2 (using 40 mm graded crushed stone aggregate) as in foundation and mass concrete for fixing poles etc including excavation of any strata & relaxing taken out cable complete all as specified and directed.

M&L PCC (1:2:4) type C1 (using 20 mm graded crushed stone aggregate) in coping / plinth blocks for poles and the like including weathering , slightly rounded or chamfered angles and throating, as directed including necessary Steel form work and finishing the surfaces fair in forms complete all as specified and directed.

M&L in repair/ renewal of Cross arms, bracings, supports,clamps and back plates fabricatedfrom structural steel sectionsincluding nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shapeor size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of aluminium paint, all as specified.

Supply and fixing in renewal of old unserviceable steel tubular swaged poles type 410 SP-55, 11.00 meter long, complete with cast iron base plate, final taper plug, bolts, nuts and screws as specified including painting with two coats of aluminium paint heat resistant type over one coat of red oxide primer and making 06 Nos bands/straps with white and black colour (30 cm wide each) synthetic enamel paint at a distance 30 cm from plinth block and numbering of poles with black bitumenous synthetic enamel paint in 2.5 cm height including tarring one coat on steel surface embedded in concerete foundation complete all as per specified and directed

S&F air Termination single pointed copper lightning Arrester model No 3001 rod complete all as specofied and directed.

M&L test point terminal block made of gun metal or phosphorous bronze size 75x75x25 mm drilled and screwed including 3 numbers 8 mm dia 25 mm long hexagonal head screw complete all as per specified and directed.

Supply and laying GI water tubing 15mm bore with screwed socket joints, medium grade galvanised including all fittings, such as sockets, bends, elbows, unions, tees laid in trenches complete all as specified and directed.

M&L for Brass/Gun metal, globe or gate valves of size 15mm bore dia with all GI fittings, iron wheel head,screwed both ends for iron pipe and fixed including taking down unserviceable gate valve complete all as specified and directed.

Trimming of tree branches touching with HT/LT over head line in the entire cantonment so as to maintaining sufficient clearance and avoid fault on over head lines complete all as specified and directed.

M/S VALLEY ENTERPRISES (BID ID -3185442)

M/S ASHRAF CONSTRUCTIONS (BID ID -3191503)

M/S TAHIRA ENTERPRISES (BID ID -3181217)

M/S Khan Hussain & Co. (BID ID -3184098)

Concept Engineering & Constructions (BID ID -3190081)