PROVN OF 630 KVA TRANSFORMER WITH CONNECTED INFRA AT JAIPUR MIL STN

Amount

Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre in depth for foundation etc or for shafts, wells, cess pits, manholes, pier holes, laying cables erection of poles / struts/stays etc n.exe 10 Sqm on plan not exceeding 1.5 metre in depth and getting out in any type of soil.

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

Removal of excavated material to a distance not exceeding 50m and depositing where directed at a level not more than 1.5m above the starting point complete all as specified and directed.

M&L for sand filling in trenches around underground cable to provide cable cushion complete all as specified & directed. NOTE:- Punned thickness of sand shall be measured for payments.

M&L bricks for protection cover to underground cable (with old size sub class `B` bricks) with width equal to length of brick laid dry and flat abutting each other with gaps between adjacent brick not exceeding 10 mm as directed by Engineer in-charge.

Supplying and laying un-reinforced precast concrete cable cover, class HVP, type 1 with peak, size 300mm x 180mm x 40mm etc complete all as specified & directed.

Supply installation, testing and commissioning of LT panel outdoor type factory made CPRI APPROVED bolted type having IP54 protection with opening arrangement in both front and back side fabricated out of 3.15mm thick CRCA sheet, duly powder coated over on inside/outside surface, Short – Circuit resistance Icw upto 50kA having Fire Resistance 750°F per 30S pre wired with 2.5-sq mm PVC insulated flexible multistranded high quality copper conductor in copper bus bar 1600 Amps capacity mounted on/ ABS/ insulator resin based fixed by means of nut, bolt and washer with suitable size to be used for incoming connection of all switchgears and all incoming and outgoing connection to be made with aluminium lugs and all incoming & outgoing connection shall be covered with PVC sleeves to indicate RYBN including necessary PCC foundation as per the manufactures instructions etc. complete all as as specified and directed.

a) ACB 415 volt 4 pole manual drawout type 1000 amps 50 ka microprocessor release with current setting range 40 to 100 %- 01 No

b) MCCB 4 POLE,400 AMPS with breaking capacity 50 KA -03 Nos

c) MCCB 4 POLE, 200 AMPS with breaking capacity35 KA -02 Nos

d) Supply and fix ON LOAD change over switch 415V, 4 pole of capacity 400 Amps.-01No

(e) Digital Load manager multifunctional energy meter having facility to measure true RMS value, KWH, neutral current, for quadrant energy, max demand (KW, KVA, Kvar & Amp), CT operated 415 volts, 50 Hz AC supply including CTs. -01 set. Make :Cat Part No WDM303FDN B1 of L&T or equivalent as approved.

(f) LED indicating lamps with holder for main supply indicating RYB - 02 set (03 Nos)

Supply, install, testing and commissioning factory made (including CPRI approved) LT feeder pillar box (KIOSK) outdoor type, floor mounted, compartmentalised and IP-54 suitable for 415 Volts 3 phase 4 wire, 50 Hz AC supply system, all as specified and directed, having bus bar chamber with insulated copper bus bar 750 amps rating installed on resin based ABS/insulators. The panel shall be dust and vermin proof, made of 3.15mm thick CRCA sheet and with base frame of 50mmx50mmx6mm angle iron , powder coated, Front and rear opening type with aprons for cable entry with double door,double shutter and locking arrangement.etc complete all as specified & directed.

Incoming

(a) MCCB 400 amps, 4 pole, 35 KA, micro processored based release with integral over load, short circuits & earth fault & neutral protection.

(b) bus bar 750 Amps

(c) Digital Load manager multifunctional energy meter having facility to measure true RMS value, KWH, neutral current, for quadrant energy, max demand (KW, KVA, Kvar & Amp), CT operated 415 volts, 50 Hz AC supply including CTs. -01 set. Make :Cat Part No WDM303FDN B1 of L&T or equivalent as approved.

(d) LED indicating lamps (R, Y & B) - 01 set

Outgoing

(a) MCCB 250 amps, 4 pole, 35 KA, with adjustable thermal release, 50 Hz, 415 volts grade-02 Nos

(b) MCCB 200 amps, 4 pole, 25 KA, with adjustable thermal release, 50 Hz, 415 volts grade-03 Nos

Supply and fix cable jointing kit for 11 KV grade cable for out door termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured AI conductor cable of size 185 sq mm

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade (earthed), of size 3 core 185 sq mm.

M&L Anticlimbing devices spike type made out of 40mm x 6mm flat iron clamp in two pieces with 10 Nos 10 cm long and 12mm dia spike welded in clamp at the other end suitable for PCC poles etc. complete all as specified & directed.

Supply installation, commissioning and testing of switch air break gang operated HT 11 KV triple pole with 12 insulator 200 amp rating with drop out fuse assembly with fuse carrier ,fuse element mounted on insulator and steel frame mechanically operated mechanism consisting of operating rod of 25mm bore medium grade GI pipe of suitable length worked from ground level and with locking arrangement flat iron clamp 50mmx6mm including MS channel of suitable size and length for fixing GOD including bolts, nuts, and washers, etc. complete all as specified & directed.

M&L for lightning arrestor non linear resistor type confirming to IS-3070 Part I complete line discharge class - 2 nominal discharge current 10A & high discharge 65KA assembly suitable for 11 KV including all clamps, nuts, bolts & washers & connecting to earth with 32 x 6 mm GI strip etc. complete all as specified & directed.

M&L Danger Notice plate of 1.6mm thick mild steel shed vitreous enamelled white with letters, figures & conventional skull &bones in signal red colour and fixed with MS clamps, bolts & nuts of approved size of for HT 25 x 20cm etc. complete all as specified & directed.

M&L cross arm bracing support clamp back plates fabricated from structural steel section including nut bolt washer welding, bending, cold or hot drilling holes for bolt in any shape or size as directed & including two coat of aluminium paint over a coat of red oxide primer etc. complete all as specified & directed.

M&L pre-stressed cement concrete poles, 11metre long with minimum cross section 152 mm x 152 mm at top and minimum cross section 152 mm x 260 mm at bottom, class-9, conforming to IS-1678.

Supply, installation, testing and commissioning transformer suitable for 630 KVA step down outdoor platform mounted double wound copper 3 phase 50 cycles (50 Hz) AC, oil immersed, natural air cooled with external cooling tubes or fins having no load voltage ratio 11000/ 433 Volts, DYN-11 with neutral brought out on LV side for earthing and having tapping on HV side for constant output so as to alter / vary secondary voltage by ±7.5% in steps of ± 2.5% to be changed by means of manually operated "off load" tap changing gear IS :1180 Level -3. The limit of temperature rise after continuous full load run shall be as per IS-2026. The transformer shall be complete with the following fittings and accessories :-

(a) Oil conservator tank with filling holes and cap, filter type drain valve and oil level gauge

(b) Dehydrating (Silicagel) breather with connecting pipe, first fill of dehydrating agent .

(c) Shut off valve between the conservator and the tank.

(d) Provn of 02 danger notice plate 350x200x1.6mm vitreous enamelled white with letters figures and conventional skull and bones in signal red colour and fixed with and including MS clamps bolts and nuts.

(e) Air release valve plug.

(f) One cable box on LV side (secondary) consisting of 04 Nos bushing (RYBN) with nuts, washers and bushing rods with 01 cable gland suitable for reception of taking uot one 3 1/2 core, 95 sqmm, LT 1100Volts grade cable including gland joints complete all as specified.

(g) 01 No 100 mm dial type thermometer vapour pressure type having range 0 - 120 Degree centigrade with maximum temperature indicator and resetting device.

(h) Thermometer pocket on tank cover.

(j) 04 Nos plain solid CI detachable rollers.

(k) Two Nos earthing terminals on tank cover to facilitate fixing of 40x6 mm GI earth strip.

(l) Rating plate and terminal marking plate.

(m) Extra bushing for neutral outside the cable box brought out on LV side.

(n) First filling of oil confirming to IS and tested upto 60 KV dielectric strength.

(o) Lifting lugs.

(p) Oil drain valve.

(q) 3 Nos porcelain HV bushing with arching horns on HV side suitable for 11 KV complete with bushing rods, nuts and washers.

Supply and fixing HT/LT cable/route indicator cast iron of suitable size along HT cable trench including planting in ground with PCC complete all as specified and directed.

M & L supplying, laying in trenches and fixing along the poles or passing through pipes or laid under floor or through walls etc jointing and testing LT XLPE insulated armoured heavy duty cable 1100 volt grade ISI marked with stranded aluminium conductor of cross sectional area as under :-

(a) 300 Sqmm,3.5 Core

(b) 240 Sqmm,3.5 Core

Galvanised steel tubing light grade for protection of under ground cable on poles / walls under road crossing etc conforming to IS-1239 including taking out/down of existing GI pipes of following sizes :-

(a) 80 mm bore

(b) 100 mm bore

M&L earthing complete as per electrical plate No. 3 of MES SSR Part-I with galvanised steel earth plate electrode 60cmx60cmx6.0mm thick, buried directly vertically in ground in a pit depth not less than 2.25 metres below ground level with top edge of earth plate at a depth not less then 1.5 metre below normal ground level connected to and including galvanised iron or steel earth strip 32mm x 6mm by means of bolts, nuts check nuts and washers of galvanised iron or steel. Earthing strip shall be protected by galvanised iron or steel pipe 40 mm bore light grade and connected to continuous earth wire on pole / test point. Watering pipe shall be 20 mm bore GI medium grade. The earthing shall be of inclusive of excavation & earth work in any type of soil, charcoal, salt, funnel PCC pit and RCC cover complete all as specified & tested complete.

NOTE:- (i) The concrete pit shall be made in PCC 1:2:4 type B-O, using 12.00 mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover. Reinforcement in cover shall be of 8mm dia TMT bars laid @150mm c/c both ways.

(ii) Quoted shall include the cost of 7.5 metre GI pipe for protection of earth wire.

(iii) Quoted shall include cost of 7.5 metre earth lead wire.

(iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

Disconnecting of HT cables (Supply outgoing) from 11 KV VCB (of RMU) of capacity upto 800 Amps and shifting of RMU from existing location to another suitable place including installation,PCC Foundation commissioning and testing including connection with arranging vehicle ,necessary crane or chain pulleys arrangements etc , making good the damages etc as reqd and re-installation, including connecting up electrically, commissioning at site all as directed by Engineer-in-Charge.

M&L for PCC (1:3:6) type C-2 using 40 mm graded stone aggregate for foundation of as in transformer plinth complete all as specified and directed by Engineer-in-Charge.

M&L for PCC (1:2:4) type B-1 using 20 mm graded stone aggregate as in transformer plinth as per site requirement including necessary form work complete all as specified and directed by Engineer-in-Charge.

M&L for brick work with one bricks thick of old size bricks honey comb walling built in cement mortar 1:4 complete all as specified and directed by Engineer-in-Charge.

M& L for Rendering 10mm thick on fair faces of brick work or concrete surfaces plaster (1:3) cement plaster complete all as specified and directed by Engineer-in-Charge.

M& L for Hard core, broken stone/ boulders to gauge not exceeding 63 mm complete all as specified and directed by Engineer-in-Charge.

M& L white wash in new walls surfaces of transformer plinth with two coat white wash all as specified and directed by Engineer-in-Charge.

Earthing of Machinery/ equipment installed at power house/substation using 20X3 mm copper strip and copper plate of 600x600x3.15 mm thick buried directly in ground not less than 2.5 mtr below ground level, earth plate paced on all side with charcoal mixed with salt to a thickness of 150 mm connected by copper earth strip of size 20X3 mm thick soldered and riveted to earth plate. copper earth strip will be protected by using 50mm bore GI pipe (light grade) earth plate to power house/substation VCB/OCB, Panel Boards etc. body, LT feeder pillar box, and neutral of transformer with the including as required clamp 20 x 3 mm including bolts, nuts & washers complete. The earthing includes PCC pit, RCC cover and frame, watering pipe 20 mm bore, funnel with wire mess etc. all as specified and directed at site.

NOTE:- (i) The concrete pit shall be made in PCC 1:2:4 type B-O, using 12.00 mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover. Reinforcement in cover shall be of 8mm dia TMT bars laid @150mm c/c both ways.

(ii) Quoted shall include the cost of 7.5 metre GI pipe for protection of earth wire.

(iii) Quoted shall include cost of 7.5 metre earth lead wire.

(iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides.

Supply and fix copper strip 20x3mm with saddles and fixing screws etc for roof conductors and down conductors above ground all as directed by Engineer-in-Charge.

M/s SCHOLASTIC ENTERPRISES

DIVYA ASSOCIATES

SHREE BHAGWATI ENTERPRISES

Pioneer Enterprises

MORESHWAR ELECTRICALS CORPORATION

LAKSHMI ASSOCIATES