WORK SERVICES FOR PROVISION OF 630KVA TROLLEY MOUNTED MOBILE TRANSFORMER ALONG WITH CONNECTED ACCESSORIES AT IAM AND PROVISION OF STANDBY TRANSFORMER AT ASTE UNDER GE (AF) MARATHAHALLI

Amount

Supply, installation, testing, commissioning of energy efficient (level 1) 630 kVA, 11/0.433 kV, oil immersed, ONAN cooled, 3- Phase step-down distribution transformer Indoor type suitable for 11 kV, 50 Hz distribution and conforming to IS: 1180 (Part- 1): 2014, including first filling IS 335 ISI marked filtered and dehydrated transformer oil, conforming to IS: 16659- 2017, having dielectric breakdown strength ≥ 65 kV at 2.5mm gap, CRGO bolt-less prime grade core, M4 or better directly from reputed manufacturers like Nippon / Posco/ AK steels ensures high endurance of core HV & LV windings wound from super enamel covered electrolytic grade copper conductor with tapping on the HV winding for variation of HV voltage within range of +/-7.5% in steps of 2.5%, each with standard fittings and HV/LV cable boxes complete with all standard fittings/accessories and mounted on a platform as per manufecturer's recommendation as specified and directed. The transformer shall conform to the following specific parameters: [i] System Voltage: 11 kV [ii] Rated Voltage (HV/LV): 11 /0.433 kV [iii] Frequency: 50 Hz ±3% [iv] No. of Phases: 3 [v] Connection (HV/LV): Delta / Star (neutral brought out)

[vi] Vector Group: Dyn-11 [vii] Type of Cooling: ONAN [viii] Audible Sound Level: < 75 dB [ix] Insulation Level: (1) HV Peak Impulse Voltage: 75 kV (2) HV Power Frequency Voltage: 28 kV (3) LV Power Frequency Voltage: 2 kV [x] Impedance: 6.25% [xi] Maximum Losses: (1) at 50% loading: 5.05 kW (2) at 100% loading: 15 kW [xii] Cable Box Clearance: (1) HV: 127 mm Phase to Phase; 76 mm Phase to Earth (2) LV: 45 mm Phase to Phase; 20 mm Phase to Earth [xiii] Terminal Markings: (1) HV: 1U, 1V, 1W (2) LV: 2u, 2v, 2w, 2n [xiv] Off Circuit Tap Changer (OCTC): ±7.5% in steps of 2.5% The following standard fittings/accessories shall be provided along with the transformer: [i] Non-detachable rating & terminal marking plates

[ii] Monogram plate [iii] Lifting lugs for main tank & top cover & jacking lugs [iv] Top filter valve [v] Drain cum bottom filter valve [vi] Oil sampling valve [vii] Earthing terminals with lugs: 2 Nos. [viii] Storage & instruction plate [ix] Skid type under base [x] Bi-directional plain/flange rollers [xi] Detachable type radiators with top & bottom shut-off valve [xii] WTI & OTI with alarm & trip contact [xiii] Marshalling box [xiv] Magnetic Oil level gauge low oil level alarm contact NOTES : [i] The bidder shall furnish dimensional drawings of the items offered indicating all the fittings, dimensional tolerances, typical GADs of the windings with details of insulation at each point and core construction, etc. for approval. [ii] Contractor shall submit the technical drawing, Constructional drawings, safety features drawing etc for approval. [iii] Transformer to be mounted on trolly which is specified under Sch A item no.2 with necessary safety arrangement without any extra cost

Fabrication and supply 4 wheel (Double Axle) trolley with spring suspension suitable for mounting transformer capacity 630 KVA , size of Trolley 3750 mm x2000mm and carrying load capacity up to 4000 kg along with turn table,parking brake and 04 Nos screw jack assembly with 3mm thick MS plate for Top, 7.50 x 16 size tyres and AXle. The mobile unit set will bollet on frame trolley and locking arrangement for both sides with necessary angle support for antivibration complete all as specified and directed by Eng in Charge NOTES : [i] Cable drum of suitable size to accomodate HT and LT cable of suitable length specified under Sch A item no.3 and 6 to be provided on trolley mounted 630KVA transformer without any extra cost. [ii] Fencing around perimeter of trolley with door and locking arrangement to be provided for safety purpose without any extra cost

S&F for XLPE insulated, screened, PVC bedded,galvanised steel strip or wire armoured,electric power cables (heavyduty) withaluminium conductor, 11000 volts Earthed,grade cross sectional area 120 sq. mm complete all as specified and directed by Eng in Charge

Supply and fixing Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold 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 Eng in Charge

Supply and fixing 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 120 sqmm to 185 sqmm complete all as specified and directed by Eng in Charge

S&F for XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 volts grade, cross-sectional area 400 sq. mm 3½ core including legged both sides.

S&F for PVC Insulated Copper cable 1100 V , 50 sqmm , single core multistranded 20 Mtr long lugged both side (copper lug ) including suitable size Nut, Bolt and washer (brass ) complete all as specified and directed by Eng in Charge

Supply , installation, testing, commissioning of energy efficient (level 1) 500 KVA, 11/0.433 KV, oil immersed, ONAN cooledm 3-Phase step -down distribution transformer outdoor type suitable for 11 KV, 50 Hz distribution and comforming to IS : 1180 (Part-I) : 2014, including first filling IS 335 ISI marked filtered and dehydrated transformer oil, conforming to IS : 16659 - 2017, having dielectric breakdown strength > 65 KV at 2.5mm gap, CRGO bolt lesst prime grade core, M4 or better directly from reputed manufacturers like Nippon/ Posco/ AK steels ensures high endurance of core HV & LV windings wound from super enamel covered electrolytic grade copper conductor with tapping on the HV winding for variation of HV voltage within range of +/-7.5%in steps of 2.5%, each with standard fittings and HV/LV cable boxes complete with all standard fittings/ accessories and mounted on a platform for transformer of size (2mX2mX1.3m high) made out of PCC bedding below ground level 60cm depth and above work 200mm thick PCC 1:2:4 with 20mm graded aggregate type B1 including plastering of open surfaces with cement mortor as specified and directed. The transformer shall conform to the following specific parameters : (i) System Voltage : 11 KV (ii) Rated Voltage (HV/LV) : 11/0.433V (iii) Frequency : 50 Hz + 3% (iv) No. of Phases : 3 (v) Connection (HV/LV) : Delta/ Star (neutral brought out) (vi) Vector Group : Dyn - 11

(vii) Type of Cooling : ONAN (viii) Audible sound level : < 75 dB (ix) Insulation level : (1) HV Peak Impulse Voltage : 28KV (2) HV Power Frequency Voltage : 11 KV (3) LV Power Frequency Voltage : 2 KV (x) Impedance : 4.5 % (xi) Maximum Losses ; (1) At 50% loading : 1.51 KW (2) At 100% loading : 4.30 KW (xii) Cable Box Clearance : (1) HV : 127mm Phase to Phase ; 76 mm Phase to Earth (2) LV : 45 mm Phase to Phase ; 20 mm Phase to Earth (xiii) Terminal Markings : (1) HV : 1U, 1V, 1W (2) LV ; 2U, 2V, 2W, 2N (xiv) Off Circuit Tap Changer (OCTC) ; + 7.5 % in steps of 2.5% The following standard fittings/ accessories shall be provided along with the transformer : (i) Non - detachable rating & terminal marking plates

(ii) Monogram plate (iii) Lifting lugs for main tank & top cover & jacking lugs (iv) Top filter valve (v) Drain cum bottom filter valve (vi) Oil sampling valve (vii) Earthing terminals with lugs : 2 Nos. (vii) Storage & instruction plate (ix) Skid type under base (x) Bi-directional plain/ flange rollers (xi) Detachable type radiators with top & bottom shut off valve (xii) WTI & OTI with alarm & trip contact (xiii) Marshalling box (xiv) Magnetic Oil level gauge low oil level alarm contact NOTES : (i) The bidder shall furnish dimensional drawings of the items offered indicating all the fittings, dimensional tolerances, typical GADs of the windings with details of insulation at each point and core construction, etc. For approval. (ii) Contractor shall submit the technical drawing, Constructional drawings, safety features drawing etc for approval.

S&F Cross linked poly-ethylene (XLPE) insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables ( heavy duty) with aluminium conductor, 11000 volts class A2XFY 11 KV (Earthed) grade of cross-sectional area 150 Sqmm 3 core laid in trenches/through pipe in road crossings/ paths /drains /ducts /floors /along poles/walls/ceilings/ equipments etc. complete supply and fixed/ laid all as specified and as directed by Engineer-in-Charge. (Note:-(i) Necessary excavation and earth work,cable protection, sand cushioning and GI pipe shall be measured and paid for separately.)

S&F Cable jointing kit for HT 11KV (Earthed) cable for out door end termination ,Cold shrinkable type joint kit complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of 150 Sqmm x 3 core cross sectional area including testing after jointing, fixing in replacement complete all as specified as directed by Engineer-in-Charge.

S&F Cable jointing kit for HT 11KV (Earthed) cable for Indoor end termination ,Cold shrinkable type joint kit complete with jointing material and accessories suitable for XLPE armoured aluminium conductor cable of 150 Sqmm x 3 core cross sectional area including testing after jointing, fixing in replacement complete all as specified as directed by Engineer-in-Charge.

M& LEarthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick burried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of plate not less than 1.5 deep below normal ground level and connected to and including galvanized earth lead 32X6 mm strip upto 7.50 metre, by means of GI nuts, bolt, check nuts, washers thimbles, etc as shown in electrical plate No 03 SSR Part I and connection to main switch board or panel and testing on completion including excavation and earth work in any type to soil, returning fitting in and removal of surface spoil to a distance not exc 50 metre, PCC chamber (1:2:4) type B-1, charcoal and salt mixed layer 15cm thick all around the earth plate electrode, MS funnel with wire mesh, GI pipe light grade 20mm bore for watering and 40 mm bore GI pipe light grade for earth wire protection fixed with poles with two clamps, made from MS flat 25mm x 3mm, bolts, nuts and washers 75mm thick RCC cover 1:2:4 type B-1 with 8 mm dia TMT bars @ 100 mm C/C on both sides, shall be provided on CI frame etc complete all as specified.

Excavation in trenches in hard/ dense soil not exceeding 1.5 metre wide and exceeding 1.5 metre in depth for route of cable and getting out complete all as specified and as directed by the Engineer-in-Charge.

All as per item No. 14 but exceeding 1.5m but not exceeding 3m in depth

Returning, filling in hard/ dense soil including spreading, leveling, watering and well ramming, in layers not exc 25 cm complete all as specified and as directed by the Engineer-in-Charge.

Removing of surplus soil to a distance not exc. 50 meter and depositing where directed at a level not exc.1.5 metre above the starting point complete all as specified and as directed by the Engineer-in-Charge.

M & L for Sand cushioning to cables with a layer of sand 8 cm deep before laying the cable and 15 cm depth after laying of cable, complete all as specified. Note :- Punned thickness shall be measured and paid.

M & L for Protection to cable with one layer of PCC covers HVP Type-I of size 300mm x 180mm x 40mm laid flat butting to each other in such a way that the length of the PCC cover is at right angle to the central axis of the cable , complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing in replacement GI pipe light grade 100 mm bore (ISI marked) laid in trenches/ road crossings/ fixed to poles/ceiling / along walls/ path /drain/floors with and including all necessary clamps, nuts, bolts, washers etc and all fittings as required, complete all as specified and as directed by the Engineer-in-Charge. (Note :- Necessary excavation and earth work shall be measured and paid for separately.)

M&L for PCC (1:3:6) type C-1 using 20 mm graded stone aggregate as in filling of hardstand cuttings including form work complete all as specified.

M/S - KRUPA ELECTRICALS

Chandana Enterprises

devan enterprises