PROVN OF TRANSFORMER ALONGWITH TWO DISTRIBUTION PANELS AT SFC AT TECH FLT HANGER AT AF STN SRINAGAR

Amount

Supply,installtion and testing and commissionig of AC 3 Phase, 50 Hz, 160 KVA capacity BIS marked transformer step down outdoor type, sealed type. 11000/433 volts at (no Load) with nominal voltage 11 KV all as per iS 1180 (part-i) : 2014' 50 c/s + -5% , copper wound, mineral oil immersed with first filling of oil as per IS: 335, naturally cooled with external cooling tubes,ONAN cooling, core type, delta connected on primary (HV) side and star connected on secondary (LV) side in accordance with vector symbol DYN-11 ( vector group-4) wih neutral brought on secondary (LV) side including provision of all necessary/ standard fittings all as per IS:2026 & EIC 76 latest ammendments and confirming to BEE 2 star labelled energy efficiency level -2 as per IS 1180 2014 Part I with and in NO 1,2,3&4 transformer. the maximum allowable losses at 75 degree celsius for 11/0.433KV at 50% of rated load and total losses at 100% of rated load shall not exceed the maximum total loss 570 watt and 791 watt respectively without any positive tolerance. the percentage impdence of transformer at 75degree celcius shall be 4.5%. overload capacity of transformer shall be suitable for loading as per IS 6600. audible sound levels shall be 51 decibles ( NEMA standards). the transformer should be designed as per tropical condition of srinagar, for more details refer particular specification. the transformer shall comprising of the following:-

(a) One cable box on primary HV side having cable glands suitable for 95 Sqmm 3 core XLPE 11 KV HT cable consisting of 3 Nos porcelain HT bushings with brass bushing rods conforming to IS 2099 and IS 3347 for outdoor bushing complete with nuts and washers. The cross section of the connecting rods shall be stated and shall be adequate for carrying the rated currents. On the HV side the terminal rod shall have a diameter TS for 3 Phase DT 11 of not less than 12 mm. The material of connecting rod shall be copper. HT Cable support clamp should be provided to avoid tension due to cable weight. The HV bushing shall be of 17.5 KV/250A class, porcelain/polycrate .

(b) One cable box on secondary (LV) side consisting of 4 Nos porcelain bushings complying to IS 7421 with brass bushing rods 20mm dia complete with brass nuts and washers with cable gland suitable for reception of outgoing LT sheathed armoured cables having non-magnetic material gland plate with appropriate sized single compression brass glands of suitable size on LV side to terminate XLPE armoured cable. The LV bushing shall be 1.1 KV class: (4 Nos.)

(c) MS tank with PSRI elliptical tube radiators (d) Pressure relief valve shall be of 35 kPa with dia.12.5 mm. (e) Air release plug. (f) Should be 35 degree celsius/40 degree celsius in oil/winding respectively (g) First fill of fresh transformer oil conforming to IS-335, BS148, D-1473, D-1533-1934IEC Pub296 and tested upto 40 KV dielectric strength. Use of recycled oil is not acceptable. The specific resistance of the oil shall not be less than 2.5X10¹² ohm-cm at 27°C when tested as per IS 6103. (h) One No 100 mm dia dial type thermometer vapour pressure type having range 0-120 degree centigrade with temp reading pointer, max temp indicator and resetting device.

(j) Lifting lugs: 4 Nos. of MS plate 8 mm thick (min) suitably reinforced by vertical supporting flat welded edgewise below the lug on the side wall. (k) Pulling lugs: 4 Nos. of welded heavy duty pulling lugs of MS plate 8 mm thick (min) shall be provided to pull the transformer horizontally. (l)Conservator with oil filling hole and cap. (m) Transformer to be painted with poly urethene/powder coated (color light gray & DA gray) paints over anti corrosive primer. The paint shall be applied by airless spray. Inside of tank shall be painted with oil resistance paint of colour shade yellow/green. (n) Rating plate with terninal markings: The information of Rating and terminal markings as per IS 1180 (Part-I) 2014, Clause No. 13 shall be engraved (punched) on combined name plate. The transformer shall be marked with the Standard Mark. Details of Guarantee Period shall also be mentioned in combined Name Plate.

(o) Two numbers of channels having following minimum size 100 x 50 x 460 mm to be provided.The transformers shall be suitable for loading as per IS: 6600 / 1972 with latest amendment if any. (p) Earthing terminals with earthing symbol having minimum size 1⅟2” X ⅟2” with lugs - 2 Nos to facilitate fixing of 32 x 6 m GI earth strip. (q) 4 No. bi-directional detachable rollers of plan solid cast steel. (r) Terminal connectors on the HV bushings and LV bushings.The bi-metallic connectors shall have to be fitted on HV/LV terminals having capacity to withstand 1.5 times of rated HV/LV current of transformer. (s) Extra bushing for neutral outside the LT cable box for providing independent earthing for neutral. (t) Provision of 2 Nos danger boards 250 x 200 mm size made out of 1.6 mm thick MS plate, vitreous enameled white, with letters, figures of voltage and conventional skull and bones in signal red colour, one at HT side and other on LT side.

(x) Drain-cum-sampling metallic valve with plug and explosion vent. (y) Prismatic Oil level gauge indicating the position of oil marked with background of yellow color) as follows - Min (-5°C), 30°C, Max 90°C (z) Non return valve (NRV) -1 No (mandatory for sealed transformer with inert gas). (aa) Oil filter valve (1.25 Inch, nominal size thread) -1 No at top of tank. (ab) Any other fittings/accessories so as to conform the whole transformer to IS 1180 Part I 2014.The manufacturer must be have in house NAB accredited lab to ascertain the product quality. Note: - (i) Any other relevant accessories as required at site as per IS to be provided. (ii) Contractor should submit general arrangement drawing, drawing of combined name plate and technical details sheet to GE before purchase.

Material and labour for Supply, laying, jointing and testing, HT cable 11000 volts earth grade of cross sectional area 95 Sqmm 3 Core as per IS-7098 (Part-I) 2011, XLPE insulated aluminium conductor heavy duty served with an inner sheathing PVC tape, galvanized steel strip or wire armoured with an overall PVC sheathing laid in trenches, fixed along the poles or passed through GI pipe using clamps wherever required laid under floors, road etc fixed encased in GI pipe connecting with suitable size of lugs and cable glands etc, each cable termination is to be made with suitable size of cable glands and aluminium thimbles (for junction boxes,etc) for incoming and outgoing cables complete all as specified and as directed. (Note : MS clamps with nuts, bolts washer etc shall be measured and paid separately under relevant items)

Supply laying and testing cable XPLE insulated screened PVC bedded galvanized steel strip or wire armoured electric power cables (heavy duty ) 1100 volts grade with standed aluminium conductor of size 35 sqmm 3.5 core.

Supply and fixing LT bus bar Chamber factory made weather and vermin proof having size 60 cm x 40 cm made of 2mm thick MS sheet with 160 Amps aluminium Bus bar for three phase and one neutral suitable for fixing on wall with nuts and bolts including MCCB FP 160 Amps 10 KA 415 volts 50 Hz complete all as specified and directed.

Supply and fix lightning arrestor expulsion type complete with all fittings, Transmission class, discharge capacity 65 Kilo ampsHT 11 KV 10 KA.

Material and labour for Excavating in trenches in any type of soil ( soft & loose not exc. 1.5 mtr wide and not exc. 1.5 mtr in depth for foundation poles, stays, laying of cables etc for shaft, wells, cesspits, manholes, peir holes, etc not exc. 10 Sqm on plan and getting out, complete all as specified and directed by Engr-in-Charge.

Material and labour for Returning, filling in (soil), including spreading, levelling, watering and well ramming in layers not exc. 25cm thick, complete all as specified and directed by Engr-in-Charge.

Material and labour for Removing of excavated soils to a distance not exc. 50 metre and depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and directed by Engr-in-Charge.

Material and labour for Sand cushioning for underground cable 8cm before laying the cable and 15cm after laying and stretching the cable, complete all as specified and directed by Engr-in-Charge. ( Note : Punned thickness shall be noted)

Material and labour for Supplying and laying un-reinforced precast concrete cable cover class HV, type - I, flat, size 300 x 180 x 40 mm complete all as specified and directed by Engr-in-Charge.

Material and labour for Supplying and laying factory made un-reinforced precast concrete cable cover class LV, type - I, flat, size 250 x 150 x 40 mm complete all as specified and directed by Engr-in-Charge.

Material and labour for Air break gang operated switch with 12 Nos insulators outdoor type, triple pole, mechanically operated, suitable for vertical installation, single break, provided with locking arrangement, consisting of MS Channel, HT post type insulator copper alloy, high pressure, assembly drop out fuses, operating rod 25mm dia GI pipe, medium grade for operating from 1.2 m above GL complete including drop out fuses conforming to IS rated voltage 11 KV and for current rating 200 Amp all as specified.

Material and labour for earthing complete with galavanised steel earth plate electrode of size 60mm x 600mm x 6mm thick buried directly in ground (earth pit not less than 2.25m deep below gound level with top edge of the earth plate not less than 1.5 m below normal gound level connected to galvanised steel earth strip of size 32x6 mm by means of bolts, nuts, check nuts and washers of galavanised iron/steel and conneted to main control board as directed and including proivison of concrete pit in PCC (1:2:4) type B1 pre cost RCC earth pit cover reinforced with 8 mm dia TMT bars @ 150mmc/c of size 54cmx54cmx8cm with two handle for lifting made out of 8mm dia MS bar, provision of funnel, wire mesh, 20mm bore galavanised steel tubing (med grade) for watering. Charcoal 250 Kg and salt 200 Kg in alternate layers, 40mm bore galavanised steel tubing light grade for protection of earth lead connection including necessary excavation and earth work and testing complete all as shown on electrical plate No 3 of SSR Part-I. Note : Earth strip and protection pipe upto 7.5m is included in the unit rate of this item. Contractor shall quote his rate accordingly.

Supply and fixing of GI Earthing strip of size 32X 6 MM complete all as spd and directed.

CHINAR CONSTRUCTION TRADERS (BID ID -3184230)