SPECIAL REPAIR/REPLACEMENT OF OLD VCB CONVERTER TO NEW SF-6 CIRCUIT BREAKER (630 AMP) AND ALLIED WORKS VAYUSENA VIHAR AT AF STN NAJAFGARH UNDER GE (AF) TUGHLAKABAD

Amount

Supply, installation and Commisssioning of 11 KV rated Voltage,630 Amp non extensible outdoor (IP-64) ,fixed type SF-6 insulated RMU (Ring Main Unit) 3 Way Comprising of 2 Nos 630 Amps Load break switch as outgoing and 01 No vaccuum circuit breaker as incoming inside robotically welded stainless steel 304 (Non Ferrous,Non Magnetic grade) having IP-67 grade protection and impulse withstand voltage 75 KV ,rated power ,frequency withstand 28 KV/minute rated frequency 50 Hz ,Rated Short Time Breaking Current 21 KA/3 Sec.RMU should be provided with internal bus bars as well as earthing bus bar,one number fault passage indicator per unit pad lock provision & complete with acccessories .The RMU shall be type tested for internal arc test of 21 KA/1 Sec as per IEC 62271-220..The earthing of cable sheilds.The outer enclosure main door should cover entire part of the switchgear including front cover and cable doors for providing complete IP 54 Protection .The Unit shall include the follwoing with all necessary standard fittings as required at site all as specified and testing complete of the following Specification:-

(a) 02 Nos outgoing 630 Amps load break switch ,triple pole single break 3 position (On,Off and Earthing having STC Capacity 21 KA for 03 seconds with copper bus bar and copper earth bar fitted high fixed type voltage indicator device as per IEC 61958-1 fully rated with earth switch ,spring assisted mechanism with built in operating operating handle ,arc proof hinged type cable cover air insulated cable boxes and boots suitable for bottom front entry termination of 3 core cable 120/185 Sqmm. (b) 01 no incoming 630 Amp motorised vacuum circuit breaker ,triple pole single break 3 Position (On,Off and Earthing having STC Capacity 21 KA for 03 seconds with copper bus bar and copper earth bar fitted high fixed type voltage indicator device as per IEC 61958-1 fully rated with earth switch ,spring assisted mechanism with built in operating operating handle ,arc proof hinged type cable cover air insulated cable boxes and boots suitable for bottom front entry termination of 3 core cable 120/185 Sqmm. (c ) Bus connection PT unit 01 No for metering consists of following:- (i) Type M Air insulated metering module 12 KV 630 A 21 KA for 3 Sec (ii) 3 voltage transformers of the ratio 11KV/1.732/110 V/1.732.25 VA class 1.0 with HT Fuses on primary side and MCB on secondary side. (iii) 3 Digital MFM with 485 port to measure Amps ,Volts,Frequency,PF ,KWH,KVAR (iv) 1 LED Bulb for illumination (v)1 Space heater with thermostat (vi) 1 set of RYB indicator (vii) 1 Cable support bus bar stand for 3 Way unit ,1 manometer & 1 operating handle. (viii) 1 set bushing for external bus bar connection along with bus bar & sleeved bus bars for coupling. (ix) 2X12 V Battery with battery charger of suitable burden for motor operation Input 230 V AC & output 24 V DC. (d) Capacitive Voltage indicator fixed type VPIS 9-15 KV (e) Necessary Interlocking arrangement for safety and operation (f) One No operating handle for manual operation (g) PCC 1:2:4 type B1 using 20 mm Graded stone aggreagte for foundation and bus duct of cable for RMU as per Recommendation of Manufacturers & as Directed by Engr-in-Charge.

(h)Safety interlocks shall be provided as relevant IEC/IS Standard and manufacturers directions. (j) Above switchgear shall confirm to all relevant IEC/IS standard. (k) Manual Operation of Vacuum Circuit Breaaker should be possible without dismantling the motor from RMU .The motor should be fitted in such a way that it should not be required to dimantle during manual operation . (l) Copuling of RMU and metering module should be with the help of bolted type arrangement so that the coupling at site shall be easy .Plug in type bushing shall not be acceptable. (m) Minimum 3 module should accomadate in one tank to avoid multiple coupling at site. (n) Having following additional facilities :- (i) Trip Circuit Supervision (ii) Disturbance Recorder (iii) Event Log with Date and Time (iv) Measurement and Control Feature (o) Current Transformers (CTs) of ration 40/5 -5 A of 15 VA output accuracy class 1.0 for metering instrument and 5P10 for 15 VA accuracy for over current and earth fault protection sets of 03 . Note:- (i) Any other parts/items not specified above but have been considered essential for smooh and safe functioning of the RMU system shall be included in the items and are cvered against the quoted rate. (ii) Cable compartment shall be provided at the front side with front bolted type box covers provided with an inspection window for enabling operator to have visual inspection without opening cover in live condition for all inncoming and outgoing RMU Panels . (iii) Complete with internal and external connection with each other or as per ground recruitment.

Supply, laying in trenches, duct and testing XLPE insulated (earthed) cable in screened PVC bedded galvanized steel strip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor, 11000 volts grade, cross sectional area 120 Sqmm 3 core ISI marked conforming to IS- 7098 (Part-II) 1985 including suitable size of lugs and glands complete all as specified and directed by the Engr-in-charge.

Supply and lay/fixing/passing through pipe cable XLPE (FRLS) with aluminium conductor with heavy duty stranded,1100 volts size of 70 Sqmm 4 Core ISI marked complete all as specified and directed by the Engr-in-charge. . Note:- XLPE insulated PVC sheathing (heavy duty) armoured cable with aluminium conductor for working pressure up to and including 1100 volts to IS -7098 (Part-I) for PVC insulated cables with following features :- (a) Cable shall have fire retarded low smoke (FRLS) compounded added to it in the out sheathing as per IEC 754 (part-I) IEC-60332 part-2 IFEE 383 ASTM 2x43 and ASTM 2X63 flame retardant compound (PR) as per EIC specification. (b) Inner sheathing shall be of extruded PVC. (c) Heat resisting PVC shall also be added to extrude inner and outer sheathing (d) Cable shall also be supplied with sequences hall marking at every meter as the outer sheathing. (e) Ultra violet radiation resistances compounded comprising ton ASTMG-53. (f) Anti rodent and ant termite compound added. (g) PVC compounds of various grades as IS-5831. (h) Compaction conductors shall be shaped and arrangement for the same with be on the cable (j) Including suitable size of Lugs & glands complete all as specified and idrected by Engr-in-Charge Note:- (i) Each cable shall be tested for all applicable routine tests as per IS-5831,IS-7098 BS-6746,BS-5467 and IEC 60502 and test reports shall be provided to GE. (ii) Type test as per relevant specification shall produce to GE.

S & F of MCCB 400 Amps 4 Pole breaking capacity 36 KA, 415 V, ISI marked, with Microprocessor release in existing panel boards connecting with proper size link set at incoming and outgoing cable end with cable connections and including necessary addition/alteration to existing Panel with welding cutting to steel structure and providing new steel items and taking down old item complete all as speicifed and directed by the Engr-in-charge.

S & F of MCCB 250 Amps 4 Pole breaking capacity 36 KA, 415 V, ISI marked, with Microprocessor releasein existing panel boards connecting with proper size link set at incoming and outgoing cable end with cable connections and including necessary addition/alteration to existing Panel with welding cutting to steel structure and providing new steel items and taking down old item complete all as speicifed and directed by the Engr-in-charge.

S & F of MCCB 160 Amps 4 Pole breaking capacity 36 KA, 415 V, ISI marked, with Microprocessor release in existing panel boards connecting with proper size link set at incoming and outgoing cable end with cable connections and including necessary addition/alteration to existing Panel with welding cutting to steel structure and providing new steel items and taking down old item complete all as speicifed and directed by the Engr-in-charge

Supply, fix cable jointing kit and testing complete for 11 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to 185 Sqmm complete all as specified and directed by the Engr-in-charge.

Supply, fix 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 Sqmm to 185 Sqmm complete all as specified and directed by the Engr-in-charge.

Excavation in trenches in soft/loose soil, not exceeding 1.5 mtr wide and not exceeding 1.5 mtr deep and getting out in soft/loose soil for laying of cable/ foundation of pole and stay etc in complete all as specified and directed by Engr-in-charge.

M&L for sand cushioning in trenches for protection of LT underground cable including watering and consolidation as per SSR Part-I complete all as specified and directed by Engr-in-charge. Note: Punned thickness shall be measured for payment purpose.

Supplying and laying un-reinforced precast concrete cable cover, Class HV, Type 1, flat, size 300mm X l80mm X 40mm complete all as specified and directed by Engr-in-charge.

Supplying and laying un-reinforced precast concrete cable cover, Class LV, Type I, flat, size 250 mm X 150mm X 40mm complete all as specified and directed by Engr-in-charge.

Removing the excavated materials not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above ground level from starting point complete all as specified and directed by Engr-in-charge.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cm complete all as specified and directed by Engr-in-charge.

Supply and laying in replacement of GI tube light grade 80 mm bore Tubes, with all fitting and fixed complete to walls and ceilings or laid in floors complete all as specified and directed.

M & L for earthing complete with copper earth plate 600 x 600 x 3.15 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to copper strip of size 20 x 3 mm by means of bolts, nuts check, nuts and washers including charcoal dust common salt including necessary excavation in soft loose soil returning filling in and removal of surplus soil to a distance up to 50 m, PCC pit in cement concrete 1:3:6 type C1 by using 20mm grade stone aggregate, precast RCC cover shall be provided in RCC 1:2:4 type B-1 by using 20mm grade stone aggregate, 40mm thick pit cover reinforced with 8mm dia TMT bars 75mm c/c both ways, MS handle 12mm dia, PGI funnel wire mesh and GI watering pipe of 20mm bore (light grade) and earth lead protection pipe 40mm bore (light grade) GI pipe for earth lead protection, including earth work complete, all as per Electrical Plate No 3 of SSR Part-I, complete all as specified and directed by Engr-in-Charge. Note:- Copper strip and protection pipe of 40 mm dia upto 7.5 meter length are deemed to be included in the quoted rate. Note:- (i) Earth Lead wire and its protection upto and including 7.50 mtr only from top of earth electrode are included under this item . (ii) On testing if the earth resistance is not obtained within the permissible limit ,earthing shall be re-done by the Contractor at No extra Cost,till desired earthing resistnace is obtained (iii) Any joint in earth lead from earth electrode to test point shall not be allowed/permitted.

Material and labour for preparing mild steel sheet board 1.6mm thick 30cm x 20 cm having letter written with white paint and red paint on MS board (MAN ON WORK/ SHUT DOWN) complete with hanging arrangement on VCB for shut down procedure and complete, all as specified and as directed.

S & F of copper strip of size 20 mm x 3.15 mm with all fixing arrangements such as clamps/MS screws/saddles/ PVC gutka/ Brass Nut bolt/Porcelain insulator & washers etc complete all as specified and directed by the Engr-in-charge.

M&L in replacement of Earthing complete with galvanized mild steel earth plate electrode of size 600 mm X 600 mm X 6 mm buried directly in ground (in vertical position) earth pit not less than 2.25 mtr deep below the normal ground level with the top edge of the earth plate not less than 1.5 m (B.G.L.) and connected to GI earth strip 32X6 mm dia GI earth wire as earth lead by means of bolts, nuts, check nuts and washers of galvanized iron including PCC (1:2:4) type B-1, precast RCC cover slab with suitable handle made of 12 mm round bar including necessary excavation & earth work in any type of soil, 20 mm dia medium grade galvanised steel tube for watering with one end fixed with cast iron funnel and wire mesh, 40mm bore light grade galvanised steel tubing upto 7.5 mtr length for drawing earth lead wire protection common salt, charcoal etc complete all as shown in EP No 3 of SSR Part-I 2020 and testing on completion and dismantling old one complete all as specified and directed by Engr-in-charge. Note:- (i) Earth Lead wire and its protection upto and including 7.50 mtr only from top of earth electrode are included under this item . (ii) On testing if the earth resistance is not obtained within the permissible limit ,earthing shall be re-done by the Contractor at No extra Cost,till desired earthing resistnace is obtained (iii) Any joint in earth lead from earth electrode to test point shall not be allowed/permitted.

S & F of galvanised iron strip of size 32 mm x 6 mm with all fixing arrangements such as clamps/MS screws/saddles/ PVC gutka/ Brass Nut bolt/Porcelain insulator & washers etc complete all as specified and directed by the Engr-in-charge.

Excavating in post holes (or similar holes) each n exc 0.5 cu. m, getting out, returning,filling in and ramming earth or broken rubble mixed with earth around, in layers not exceeding 25 cm, complete all as specified and directed by Engr-in-charge. .

M&L Plain Cement Concrete Type C-2 1:3:6 (using 40 mm graded stone aggrgate) as in foundation filling and mass concrete complete all as specified.

S&F Pre-painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50 mm thick of an colour having tensile strength of 550 mpa as in roof covering / cladding to wall, fixed with self tapping screws as specified.

S&F steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes confirming to IS 1161-1979 Complete all as specified and directed.

S&F framed work as in gusset plate for framed truss, rafters, rails braces etc complete, drilling for fixing of steel sheeting or other covering, door etc to be prepared for hanging or sliding with and including either hook and hinges or steel hanging door fitting etc with welded, riveted or bolted of Fe-410 Gde 250A complete all as specified and as directed.

S&F Framed work as in doors or gates of angle or other section with gusset plates, rails, braces, etc., complete, drilled for fixing of steel sheeting or other covering, Doors etc. to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fittings and fastening and fixing complete FE 290 Gde E-165 complete all as specified and directed.

S&F Mild steel work of angle iron (or flat iron etc for railings, balusters, nosing to steps including embedding in concrete and screwing etc, flat iron for posts & struts in fencing including cutting tops to shape as directed, drilling holes, notching for wire, etc.; flat iron fillets (for securing wire mesh etc.) including all necessary drilling, bolting or riveting, etc & similar work conforming to Fe 290 complete all as specified and directed.

Mild steel Round bars 10 mm dia and over, cut to length, bent to shape required including cranking, bending, spirally hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.90mm dia, complete all as specified and directed.

Supply only Chain Link MS galvanized fencing any size and any type complete all as specified and as directed

Fixing only Chain Link MS galvanized fencing including wires any mesh, size and any type of standards rails, straining bolts etc including provision of binding wires complete all as specified and as directed.

S&F MS screw bolts (machine made 12 mm dia. Shank) with hexagonal or square heads at one end and screwed at another end, each screwed end to be fitted with washer and one hexagonal or square nut, n exc. 5cm length complete all as specified and directed.

M&L bricks works with sub class 'B' bricks straight or curved on plan exc 6m mean radius built in (1:6) complete all as specified and directed.

M&L 15mm thick rendering in cement mortar 1:4 to fair faces of brick masonary finished even and smooth (without using extra cement ) complete all as specified and directed.

M&L for three coats of white washing on new plaster wall surface over primer including preparation of plastered surfaces complete all as specified and directed.

M&L preparation new or previously untreated steel surfaces of any description over 10 cm width or girth and applying two coats of synthetic enamel paint over and including one coat of red oxide zinc chrome primer complete all as specified and directed

M&L for broken stone or boulder hardcore of gauge n exe 63mm deposited, spread and levelled in layers n exe 15cm thick, watered and rammed to a true surface complete all as specified and directed.

M & L for 75mm thick PCC 1:3:6 , type C-2 using 40 mm graded stone aggregate as in plinth protection/path/paving laid in slope in 1:30 in alternative bays not exceeding 3 mtr in length. Exposed surfaces finished even and smooth without using extra cement including raking out joints between panel to panel and panel to wall and plugging the same with bitumen mastic using bitumen and sand mixture in 1:3 complete all as specified and directed .

M&L Sand filling under floors or in foundations including watering and consolidation complete all as specified and directed by Engr-in-charge.

M&L Machine Pressed precast concrete interlocking paver block with grey cement and pigment any shape and size confirming to IS- 15658-2006 of 60 mm thickness M-35 grade complete all as specified and directed by Engr-in-charge.

Schedule of Credit

MOHIT ENTERPRISES (BID ID -3163918)

Ridhi engineers and builders (BID ID -3166617)

M/s ELECTROSHINE ENGINEERS (BID ID -3161426)