CWE/GGN/GT-18/2025-26 AUGMENTATION OF ELECTRIC INFRASTRUCTURE TO ENHANCE ELECTRIC SUPPLY FOR CERTAIN UNIT AF STN ARJANGARH UNDER GE (AF) GURGAON

Amount

Supply, installing, testing and commissioning outdoor type, Plinth mounted step down transformer, 11 KV/433 Volts (at no load) AC three phase 50 Hz, 630 KVA capacity, core type, double copper wound, oil immersed, naturally cooled, Oil Natural- Air Natural (ON AN), with external cooling tubes/fins, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group DYn-11 with Neutral brought out on secondary side (LV side) and having tapings at + 2.5% & + 5% on HV side to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 45 degree Celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continuous full load run on an ambient temp of 40 degree Celsius. The transformer shall be conforming to IS-1180 Part-1( 2014) with energy efficiency level 2 as per Gazette Notification No. CG-DL-E-08042021-226437 dt 08 Apr 2021 (Amendement No. 4 dt Mar 2021 to IS:1180-2014) and shall comprise of the following :- (a) Three nos porcelain bushing suitable for 11 KV on HV side , complete with brass/copper rods, nuts and washer (b) One cable box on LT side (Secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers, with cable glands suitable for reception / taking out of LT 1100 volts grade XLPE, armoured cables including jointing materials complete. (c) Oil conservator with filter type drain valve and oil level gauge. (d) De-hydrating breather with first fill of dehydrating agent (silica gel). (e) Explosive vent, Thermometer pocket on tank cover, Oil level gauge, Oil drain filter valve, Lifting lugs/ jacks , Oil filling hole with cap / plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers. (f) One No , dial type thermometer, vapor pressure type, having range 0-120 degree Celsius with metal guard having maximum perimeter temperature reading indicator with re-setting device. (g) Two earthing terminals on tank cover to facilitate fixing of 32 x 6 mm galvanised iron earth strip for earthing of body. (h) Rating plate and terminal marking plate (j) Extra bushing for neutral, in the LT cable box for providing independent set of earthing for neutral.

NOTE:- (i) PRECOMMISSIONING TEST SHALL BE DONE BY SEI FROM CE WC, WITHOUT ANY EXTRA COST. (ii) The rate quoted shall also includes for pre- dispatch inspection by rep of Accepting officer (iii) First filling of new and unused transformer oil, IS-335 marked (Make Savita / Power Link/Poweroil) filtered and tested upto 45 KV dielectric strength at 2.5 mm air gap between testing electrodes.

Supply and lay XLPE Insulated screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 3.5 core 400 sq mm. Notes:- (a) Rate quoted by the contractor deemed to be inclusive of suitable size of aluminium lugs, thimbles, cable glands, nuts and bolts at cable termination ends irrespective of any span or any length complete all as specified and directed by Engr-in-charge. (b) 15 RM for trolley mounted transformer & 300 RM for proposed cable between 630 KVA transformer to proposed LT Panel - 02 Runs (150 RM x 2 RUN = 300 RM

Supply and fix 100 KVA voltage stabilizer (conforming as per BIS : 9815 : Part 1 : 1994 reaffirmed 2019) 3-Phase, 50 Hz, Naturally Oil cooled, indoor, unbalanced type, copper wound, digital display type, replay free smooth and silent operation with 1 "filling of transformer oil (IS 335 : 2018) have following specification :- (a) Input voltage 340-460 Volts (b) Output voltage 415 V +/- 2.5 % (Adjustable) (c) Rated frequency 50 Hz. (d) No distortion in wave form (e) Response time not to exceed 10 mille second (f) Sensivity (+/-) 2.5 % (g) Rate of correction more than 8 Volt/second for per phase (h) Class of Insulation A (j) No load losses less than 0.5% (k) Full load losses less than 2.5% (l) Duty cycle - continious 24x7 (m) Efficiency more than 95% (n) Type of load : 3 Phase, unbalanced type (o) Digital display voltmeter/ammeter (p) Protections :- (i) Overload/short circuit protections (ii) High/Low voltage cut off (iii) By pass arrangement in case of emergency (iv) Single phase sequence change protection

Supply and lay XLPE Insulated 185 sq mm 3.5 core screened PVC bedded, galvanized steel strip or wire armored, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size. Note : Rate quoted by the contractor deemed to be inclusive of suitable size of aluminium lugs, thimbles, cable glands, nuts and bolts at cable termination ends irrespective of any span or any length complete all as specified and directed by Engr-in-charge). (For proposed voltage stabilizer 100 KVA)

Supply, installation, testing and commissioning of indoor type cubical panel board floor mounted, 3 phase, 4 wire, 415 V, 50 Hz, factory fabricated in an approved factory and type tested at CPRI for 50 KA rupturing capacity at 415 Volts. The panel shall be fabricated 3.0 mm thick CRCA sheet duly compartmentalized for each control gear, front and rear openable system lockable/openable keys from both sides, preteated using seven tank process followed by powder coat painting of approved shade, provided with suitable gasket to make it dust/vermin proof and IP-54 degree of protection. The panel shall be floor mounted duly supported with complete base frame of angle 50 x 50 x 5 mm with four legs and size not less than 45 cm and should be grouted under PCC (1:2:4) of suitable size as indicated by Engr-in-charge. The internal control wiring shall be carried out with suitable gauge copper wire of 1100 volts grade and provided with suitable control MCB's/HRC fuses. The size of panel shall be suitable for accomodating and provision of switch gears and control gears all as specified and directed by Engr-in-charge incl taking down existing u/s Panel :- (Main Panel at Power House)

Supply and fixing in repalcement TPN DB's 4 way vertical type 415 V, factory made IP 43 protection class metal double door with 200 Amps rating Bus Bar 240/230 Volts, Neutal link, earth bar and Din Rail, provn for fixing of 01 No MCCB 63 Amps as incomer and fixing of MCB/iSOLATOR/RCCB etc complete all as specified and directed by Engr-in-charge

Supply and fixing MCCB 63 Amps, 3 Pole, 16 KA, fixed type, suitable to be fixed in 4 way TPN DB complete all as specified and directed.

Suply and fixing 240 V, 10 KA, 'B' curve miniature circuit breaker (MCB) of single pole and current carrying capacity SP 40 Amps in the MCB DB complete with connection testing and commissioning.

Suply and fixing 240 V, 10 KA, 'B' curve miniature circuit breaker (MCB) of single pole and current carrying capacity SP 5 to 32 Amps in the MCB DB complete with connection testing and commissioning.

Fabricate, Supply install test and commissioning of CPRI approved cubical Outdoor type LT panel board suitable for 440 Volt, 3 phase & Neutral , 50Hz supply , floor mounted weather and vermin proof , IP-54 degree of protection fabricated from MS angle of size 50x50x5 mm as base frame,with 3.15 mm thick CRCA sheet load bearing members and load bearing members such as door partitions etc of thick no less than 2.0 mm thick , with gland paltes at bottom with suitable Brass chromium plated glands, with locking arrangements complete, duly powder coated with siemens grey colour after chemical treatment, including LED RYB indicators -06 nos on incoming side and ON/OFF/TRIP indications on outgoing side of breaker, interconnections from bus bars to MCCB's with suitable size aluminium bus bars, all internal ckt / protection wiring with FRHR 1100 V grade wiring with MCB protection,including terminal adapters, spreader links on incoming and out going sides of MCCB's complete all as specified and directed and comprising of the following incl taking down existing u/s panel :- (Panel near 250 KVA DG Set) (a) Bus bar Aluminium - 400 A capacity- 04 Nos high conductivity, suitable for 415 V, 50 Hz supply including interconnection from incoming, and out going feeders with suitable mounting insulators, heat shrinkable colour sleeves. (b) MCCB 200 Amps 4 pole 25 KA, with adjustable thermal magnetic range as out going- 01 No.(Main incomer) (c) MCCB 125 Amps 3 pole 25 KA with adjustable thermal magnetic range as out going- 02 Nos. (d) MCCB 63 Amps 3 pole 16 KA with adjustable thermal magnetic range as out going- 04 Nos. (e) MCB TP 63 Amps, 10 KA, 'C Series- 03 Nos (f) MCB SPN 40 Amps, 10 KA, 'B' Series - 03 Nos (g) Digital multifuctional meter (Make : L&T), 4410 Series, Cat No. WL441010OOOO- 01 Nos (h) ON/OFF indication lamp with toggle switch and three Nos indication lamp (R,Y,B) - 7 Set of three

M & L Earthing complete for sub station equipments with galvanized steel earth pole electrod of size 600x600x6.3mm thick burried directly in the ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below the ground level, connected to galvanised iron strip 32 x 6 mm by means of nuts, bolts,check nuts and washers of galvanised or steel all as specified or shown in electrical plate No. 3 of SSR-2009( Part-l), including ncessary earth work and excavation in any strata, GI pipe 40mm dia light grade for protection of galvanised iron earthing strip upto 7.5 mtrs, and GI pipe 20 mm dia for watering from ground level to earth plate, including concrete chamber of PCC (1:4:8) type D-2 (using 40mm graded stone aggregate) having copping in PCC (1:3:6) Type C-1using 20mm graded stonr aggregate. Intemal surface of concrete chamber shall be plastered with 12mm thick cement mortar (1;4) and 50mm thick RCC cover in proportion (1:2:4) type B-1using 20mm graded stone aggregate, reinforced with 8mm dia tor bar@ 80mm c/c both ways and charcoale dust common salt etc.,funnel testing point, 8 mesh per liner inch, including test point , testing, complete . (04 Nos for transformer and 02 Nos for voltage stabilizer = Total 06 Nos)

M & L Earthing complete for sub station equipments with galvanized steel earth pole electrod of size 600x600x6.3mm thick burried directly in the ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below the ground level, connected to galvanised iron strip 25 x 4 mm by means of nuts, bolts,check nuts and washers of galvanised or steel all as specified or shown in electrical plate No. 3 of SSR-2009( Part-l), including ncessary earth work and excavation in any strata, GI pipe 40mm dia light grade for protection of galvanised iron earthing strip upto 7.5 mtrs, and GI pipe 20 mm dia for watering from ground level to earth plate, including concrete chamber of PCC (1:4:8) type D-2 (using 40mm graded stone aggregate) having copping in PCC (1:3:6) Type C-1using 20mm graded stonr aggregate. Intemal surface of concrete chamber shall be plastered with 12mm thick cement mortar (1;4) and 50mm thick RCC cover in proportion (1:2:4) type B-1using 20mm graded stone aggregate, reinforced with 8mm dia tor bar@ 80mm c/c both ways and charcoale dust common salt etc.,funnel testing point, 8 mesh per liner inch, including test point , testing, complete incl taking down existing u/s earthing. (Total 06 Nos for 03 Nos LT Panles)

M & L Earthing complete for sub station equipments with galvanized steel earth pole electrod of size 600x600x6.3mm thick burried directly in the ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below the ground level, connected to galvanised earth lead wire 4 mm dia by means of nuts, bolts,check nuts and washers of galvanised or steel all as specified or shown in electrical plate No. 3 of SSR-2009( Part-l), including ncessary earth work and excavation in any strata, GI pipe 20 mm dia light grade for protection of galvanised iron earthing strip upto 7.5 mtrs, and GI pipe 20 mm dia for watering from ground level to earth plate, including concrete chamber of PCC (1:4:8) type D-2 (using 40mm graded stone aggregate) having copping in PCC (1:3:6) Type C-1using 20mm graded stone aggregate. Intemal surface of concrete chamber shall be plastered with 12mm thick cement mortar (1;4) and 50mm thick RCC cover in proportion (1:2:4) type B-1using 20mm graded stone aggregate, reinforced with 8mm dia tor bar@ 80mm c/c both ways and charcoale dust common salt etc.,funnel testing point, 8 mesh per liner inch, including test point , testing, complete incl taking down existing u/s earthing . (Total 06 Nos for 03 Nos three phase TPN DB)

Disconnecting HT and LT Cables from existing 400 KVA transformer carefully without damaging the HT/LT buses, carefully to be mount on trolley by means of lifting arrangement by Hydra and to be fixed with suitable size of MS nuts and bolts on trolley complete all as specified and directed.

Supply and provide Transformer trolley of following specification complete all as specified and directed :- (a) Dimension :- Length 2530 mm, Width 2073 mm, Height 1921 mm (*Accuracy +/- 10 mm) (b) Main Chassis : 100 x 50 mm MC MS Channel (6 mm thickness) (c) Support channel 75 x 40 mm MC MS Channel ( 6 mm thickness) (d) Floor : 5 mm chequered plate (e) Side wall : Welded wire mesh ( 30 x 30 mm) (f) Rear door : Fixed by hinges & lock (g) Axle : 02 Nos, 60 mm x 60 mm square (h) Rim : 04 Nos, Double plated (j) Tyres : Tubeless and Airless 04 Nos 7-50:16 (k) Toe hook : Forged steel MS Channel (75*40)/Hook-40 mm (l) Axle support Angle : 65x65x6mm (m) Moving plate : 15 mm (n) U-type Nut & Bolt : 64 mm x 68 mm (o) Carrying capacity 3 Ton (Approx) (p) Frame : 50x50x6 mm MS Anlge (q) Wire-mesh covering flat : 40 x 6 mm MS Flat (r) Two coat of red oxide primer and 02 Coat of Synthetic enamel paint over complete body and trolley on all parts of MS items (t) Provision of MCCB 630 Amps 4 Pole, 415 Volts, 50 KA, Adjustable thermal and magnetic release type complete with metal sheet enclosure out door type IP-54 degree of protection with provision of suitable size of MS legs (04 Nos) of height 80 cm to be vertically stand on trolley complete all as specified and directed

Supply,laying and testing cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade of size 3 core 95 sq mm (Note : Rate quoted by the contractor deemed to be inclusive of suitable size of aluminium lugs, thimbles, cable glands, nuts and bolts at cable termination ends irrespective of any span or any length complete all as specified and directed by Engr-in-charge). (For trolley mount transformer)

Supply and fix cable jointing kit for 11 KV grade cable for outdoor termination, Cold shrink type, joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 95 sq mm (For trolley mount transformer)

Supply, fixing and installation of automatic timer switch for two Nos AC to work as alternate one by one as desired timings comprising contactor 18 Amps 4 Pole-02 Nos, ON/OFF timer switch-01 Nos, control MCB SP 6 Amps-01 Nos, complete with wiring 1.5 sq mm and 4 sq mm, connectors-03 Nos housing in 16 gauge MS Sheet 300 x 300 mm complete all as specified and directed by Engr-in-charge.

Fabricate, Supply install test and commissioning of CPRI approved Indoor type LT panel board suitable for 440 Volt, 3 phase & Neutral , 50Hz supply , floor mounted weather and vermin proof , IP-54 degree of protection, fabricated from MS angle of size 50x50x5 mm as base frame,with 3.15 mm thick CRCA sheet load bearing members and load bearing members such as door partitions etc of thick no less than 2.0 mm thick , with gland paltes at bottom with suitable Brass chromium plated glands, with locking arrangements complete, duly powder coated with siemens grey colour after chemical treatment, including LED RYB indicators -06 nos on incoming side and ON/OFF/TRIP indications on outgoing side of breaker, interconnections from bus bars to MCCB's with suitable size aluminium bus bars, all internal ckt / protection wiring with FRHR 1100 V grade wiring with MCB protection,including terminal adapters, spreader links on incoming and out going sides of MCCB's complete all as specified and directed and comprising of the following incl taking down existing u/s panel :- (for Ops Complex SATCOM)

(a) Bus bar Aluminium - 500 A capacity- 04 Nos high conductivity, suitable for 415 V, 50 Hz supply including interconnection from incoming, and out going feeders with suitable mounting insulators, heat shrinkable colour sleeves. (b) MCCB 250 Amps 4 pole 36 KA, with adjustable thermal magnetic range as out going- 02 No. (As Incomer - 01 & Incomer-02) (c) Change over switch 250 Amps, 4 Pole, 415 Volts - 01 Nos (d) MCCB 100 Amps 3 pole 25 KA with adjustable thermal magnetic range as out going- 02 Nos. (For DC power Supply 1 & 2) (e) MCCB 32 Amps 3 pole 16 KA with adjustable thermal magnetic range as out going- 06 Nos. (02 Nos for PAC, 02 Nos for 10 KVA UPS and 02 Nos for Comfort AC and Lighting Load) (f) MCB TP 63 Amps, 10 KA, 'C Series- 03 Nos (Spare) (g) MCB SPN 40 Amps, 10 KA, 'B' Series - 03 Nos (Spare) (h) Digital multifuctional meter (Make : L&T), 4410 Series, Cat No. WL441010OOOO- 01 Nos (j) ON/OFF indication lamp with toggle switch and three Nos indication lamp (R,Y,B) - 1 Set of three

S & F in repair sub main wiring for circuit of size 1.5 sq mm 2 core (FRLS) alongwith earth wire of 1.5 sq mm single core of FRLS PVC insulated unsheathed cable, 1100 volts grade with multistranded copper conductor including PVC conduit medium grade ISI marked 25mm dia as per IS specification (Surface) of suitable size complete all as specified and directed by Engr-in-Charge. (For Flood light fitting) Note : Two runs of 1.5 sqmm cable alongwith one run of 1.5 Sqmm PVC insulated unsheathed copper conductor as earth wire, conduit and conduit accessories will be measured as one length).

Supply and fixing LED Flood light 70 watt 230 V AC outdoor type with thermal management in multiple optics and equipped with IP66 protection with impact and corrosion resistant complete with driver and lamp.

Supply and fix voltage stabilizer copper wound for automatic operation, single phase naturally air cooled indoor type and designed for input variation between 170 V to 250 V with output volage stabilizer at 230 V with accuracy of +/- 2.5% and of capacity 4 KVA

Excavation in trenches in hard/dense soil not exc. 1.5 metre wide and n'exc. 1.50m deep for laying cables/pipes/poles and getting out complete all as specified and directed.

Returning filling including spreading leveling watering and well ramming in layers not exc 25Cm in soft/ loose soil, complete all as specified and directed.

Removing excavated material in soft/ loose soil n'exc 50M and depositing where directed at a level n'exc1.5M above the starting point, complete all as specified and directed.

M&L for sand cushning to U/G cable in layers of 23cm thick( 8 Cm before laying the cable and 15Cm thick after laying the cable) in trenches including watering and consolidation, complete all as specified and directed. Note : Compacted thickness of sand cushioning shall be considered 15cm for measurement and payment purpose

M & L for Old size sub class ‘B’ bricks, laid in trenches as cable covers complete all as specified and directed.

M & L for GI tubing (light grade) pipe 100mm dia bore with all necessary fitting laid in trenches/under road crossing, or fixed on poles/walls/under floor etc complete all as specified and as directed.

M & L for cutting of bituminous / PCC road of any description and in any position not other wise specifically provided ( for Laying of cables)

M & L for cement concrete in foundations , filling and ,mass concrete, Type B2 1:2:4 using 40 mm graded stone aggregate complete all as specified and directed.

Net Contract Sum will be after deducting Sch of Credit of Rs 19,841.00

Ridhi engineers and builders (BID ID -3396588)

AS Engineering (BID ID -3391114)

D P ENTERPRISES (BID ID -3397554)

M/S Anand Enterprises (BID ID -3397012)

Ruchi enterprises (BID ID -3397833)