PROVN OF INDEPENDENT 160KVA TRANSFORMER FOR POWER SUPPLY AT NFS NODE LOC UNDER GE KALUCHAK

Amount

Excavation in trenches, in soft / loose soil not exceeding 1.5m wide and not exceeding 1.5m in depth for foundation, etc or not exceeding 10 Sqm on plan and not exceeding 1.5m in depth for Pole, shafts, cesspits, manholes, pier holes, etc and getting out of soft / loose soil complete all as specified and directed.

All as per Item No: 01 above but depth exceeding beyond 1.5mtr and not exc 3 metre complete all as specified and directed.

Removing excavated soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed.

Returning, Filling in including Spreading, Leveling, Watering and Well Ramming in layers not exc. 25 Cm thick in Soils, complete all as specified and as directed.

Sand cushioning with fine dry unwashed sand in trenches for protection of cables complete all as specified and directed.

Well burnt bricks,Sub class 'B' bricks, best quality locally available laid flat, dry in trenches for cable protection complete all as specified and directed.

GI Pipe light grade 80 mm dia, ISI marked, of required length for protection of cables complete including necessary MS clamps, nuts, bolts and washers etc complete all as specified and directed.

PCC 1:4:8 type D-2 using 40mm graded crushed stone aggregate as in foundation of poles etc including necessary form work, complete all as specified and directed.

PCC 1:2:4 type B1 using 20mm graded crushed stone aggregate as in coping of pole etc including necessary form work, complete all as specified and directed.

ReplacementCross-arms, Bracings, Supports, Clamps and Back Plates fabricated from Structural Steel Sections including Nuts, Bolts, Washer, welding, bending cold or hot, drilling holes for Bolts, in any shape or size as indicated/ directed and inclusive of two coats of Aluminium Paint over a Coat primer, complete all as specified and as directed.

Aluminium conductor , steel reinforced of any sizes for jumpering connections to GOD, Las etc complete all as specified and directed

XLPE insulated GI wire/strip armoured electric power cable (Heavy duty) with stranded aluminium conductor 11000 volts Earth grade, cross sectional area 95 Sqmm 3 Core laid in trench /poles/on wall all as complete all as specified and directed.

Steel tubular swaged poles complete with ms base plate, finial taper plug, bolts, nuts and screws as specified type 410 SP-55 (11 meters long) and applying two coats of aluminum paint over a coat of red oxide primer,the embeded portion shall be applied with two coats bituminous paintcomplete all as specified and directed.

Supply, installation, testing and commissioning of 11 KV, 630 Amp, 26.3KA, Outdoor type Load Break Switchs with fuse trip , Earth switch, Dynamic MIMIC arrangement, 230V ac shunt trip coil and 2 NO, + 2NC aux contacts confirming to IEC 60265 /IS 9220.The panel board shall be made of 3.15mm thick CRCA sheet for load bearing members and 16 SWG (1.6 mm thick) for doors covers and internal partitions and shall be powder coated both side, duly grouted on platform made of brick work in CM (1:2:4), 15mm thick plastering in CM (1:6) having minimum height of 600mm. The panel shall be provided with separate compartments for each switch gears with hinged door including interlocking with switch gears. prewired with copper cable, 11KV Danger notice board on front of the panel & the degree of protection is IP-54. the panel shall be complete with instrumentation such as below:- a) Panel type designation- CSH 12 rated system voltage 12 KV b) Rated current rating 630 amps c) Nominal system voltage - 11 KV, 50 Hz d) One minute power frequency voltage withstand level -28 KV RMS. e) 1.2/50 micro second impulse voltage withstand level - 75 KV peak f) Type of Insulation - Air insulation, 3 poles g) Rated short time withstand current 25 KA/3 Sec h) Rated short circuit breaking capacity - Not assigned. HT HRC Fuses of 25 KA used to break SC current and trigger the tripping mechanism of load break switch. (j) Rated Short Circuit making capacity - 62.5 KA. (k) Cable termination - Incoming / Outgoing cables entry/exit from bottom. (l) Type of operating mechanism - Quick make, Quick break, manual spring assisted toggle. l) Type of Installation –outdoor Type, Floor Mounted

Lightning arrestors expulsion type suitable for HT 11KV complete with all fitting,transmission class having discharge capacity 65Kilo Amp complete all as specified and directed.

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 95sqmm complete all as specified and directed.

Lay cable XLPE insulated screened PVC bedded galvanized steel strip or wire armoured electric power cables (heavy duty ) 1100 volts(Earthed) grade with stranded aluminium conductor of size 70 Sqmm 3.5 core complete all as specified and directed.

Supply,install,testing and commissioning outdoor type step down transformer 11000 volts/433 volts (at no load) ,AC , 3 phase 50Hz capacity 160 KVA corec type double copper wound , oil immersed , naturally cooled, oil natural, air natural (ONAN) with external cooling fins , delta connected on primary side (HV) ) star connected on secondary side (LV) in accordance with vector symbol , Dyn 11 (vector group) with neutral brought out on secondary side (LV side) and having tapping at +2.5% to +7.5% HV side to be changed by means of hand operated off load tap changer gear. The Transformer shall be IS 1180Part 1:2014 (level -3) and BEE certied and shall comprise of the following :- complete all as specified and directed.

a) cable end box on HT side suitable for 95sqmm 3 core XLPE cable b)cable end box on LV side suitable for 70sqmm 3.5 core XLPE cable c)Oil conservator with filter type frain valve and oil level gauge d)dehyderating breather with first fill dehyderating agent (silica gel) e) explosive vent f)Thermometer pocket on tank cover g)one no 100mm dia , dial type thermometer , vapour pressure type , having range 0-120 degree celcius with metal guard having maximim perimeter reading , temperature indicator with resisting device for transformer. h) Two earthing terminals on tank cover to facilate fixing of 32x6mm copper earth strip for earthing of neutral body. i)Rating plate and terminal making plate j)oil level gauge k)oil drain/filter valve l) lifting lugs m) Oil filling hole with cap / plug with connecting plate complete n) air release valve plug o)Four plain solid cast steel deattachable rollers p)extra bushing for neutral , outside the LT cable box for providing independent earthing for Neutral q)First filling of new and unused transformer oil IS:35/93(4th revision), marked (Make:Savita/Poweroil) filtered and tested upto 40KV dielectric strength at 2.5mm air gap between testing.

Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit /pipe or fixed to poles or any other indicated situation for loop earthing etc as required 32x6mm galvanised strip. complete all as specified and directed.

Earthing complete with galvanized steel earth plate electrode 600mm x 600mm x 6 mm thick buried directly in ground ( earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level, connected to galvanized steel earth STRIP 32X6MM THICK by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR PT-I including necessary excavation and earth work PCC (1:3:6) type C-1 with 50 mm thick pre cast RCC ( 1:2:4) type B-1 cover slab (reinforced with 8 mm dia deformed bar @ 15 cm C/C both ways and suitable handle of 10 mm dia round bar) including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel and 20 mm bore galvanized iron watering pipe (medium grade) wire mesh, GI lugs, complete in all respect, GI earth wire protected by 15 mm bore (Light grade) galvanized iron pipe and other end connected with main switch board or earthing test point as directed including proper lugs, including disposal of soil to a distance not exceeding 50 mtr and necessary testing on completion complete all as specified and as directed by the Engineer in charge .Note:1. Earthing Installation shall be done in the presence of Engineer in charge.2. Earth resistance shall not exceed 1ohm.

Construction of Platform of size 3x2.5x1.25metre for installation of transformer with brick steps on one side, chain link fencing around transformer , fencing should have hinged door and locking arrangements complete all as shown on drawing No CEPZ/C-TD/002/13 sht 2/5 complete all as specified and as directed.

M/S RAJ ENGINEERS (BID ID -3147036)

Dn construction and co (BID ID -3146952)

KHAJURIA ENGINEERS (BID ID -3147161)

VEE ESS ENGINEERS (BID ID -3140197)

M/S JIWAN SINGH (BID ID -3139971)