81250/E8 PROVN OF 11KV HT AVR OF MINIMUM CAPACITY 800 KVA FOR STEPPING UP OF HT VOLTAGE UNDER GE MINNIEBAY.

Supply, installation, testing and commissioning of copper wound HT-AVR, 11 KV/11 KV rated, outdoor type, oil immersed, naturally cooled ONAN, rated temperature rise in oil & winding 50/55 degree centigrade complete with standard fittings of capacity 800 KVA, ONAN Cooled Oil Immersed Copper Wound OUTDOOR HT-AVR ON-Load Stepless Rolling Contact type suitable for balanced Supply and unbalanced Load suitable for Input supply : 8.8 KV to 12.1KV, 3 Phase, 50 Hz and Output supply : 11 KV + 1%, 3 Phase, 50 Hz, consisting of step down transformer double wound, star/ delta connected with vector group DYN11 with on load tap changer (OLTC) + Remote ap cubicle changer (RTCC) panel+ Automatic voltage regulator (AVR) with approx 17 step position and tapping range +10% to -20% in steps of 1.875% each or nearest as per OEM design, on load stepless rolling contact type regulator, auto wound delta connected, booster transformer, double wound open / open, automatic control gear consists of followings :-

(a) One electronic relay, (b)One reversing geared motor unit. (c) Two limit switches in order to avoid over-running highest and lowest position, Chain Drive, coupling devices and all electrical connections including cable box on LT and HT side , first fill of transformer oil, suitable mounting rails of appropriate gauge and other standard accesssories, 0.5 KVA UPS for auxiliary supply complete

Supply, laying, testing & commissioning of HT UG cable, XLPE insulated screened PVC bedded, galvanised steel strip or wire armoured, electric power cable(heavy duty) with stranded aluminium conductor, 6.35/11 KV grade (Earthed system cable) of size 3 core 95 sqmm complete all as specified and directed. Note:- Earth work, sand cushioning, concrete cable covers, GI pipe protection for road crossings, HT termination joints will be measured and paid separately.

Supply , install, testing and commissioning of HT 11 KV Switch air break, gang operated, triple pole with drop out fuses and 12 insulators, mechanically operated, mounted on insulators and MS channel frame, with operating mechanism made out of 25 mm dia G.I medium grade pipe suitable for operation from ground level with locking arrangement complete for current rating 200 Amps including necessary ACSR jumpers/pad clamps etc complete all as specified and directed.

Supply, install, testing and commissioning of HT lightening arrestor metal oxide type (gap less) heavy duty single pole suitable for 12 KV rated highest system voltage, long duration distribution discharge class type, IP 55 Degree of protection, 100(kVp) at 65 kA High current impulse withstand voltage and 9 KV Arrestor rating with normal discharge current of 10 KA complete with all fittings conforming to IS: 3070 part-3 effectively connected with earthing system complete all as specified and directed. Note:- Manufacturer's test certificate for lighting arrestor shall be produced before claiming for payment.

S&F cable jointing kit for 11 KV (Earthed) grade XLPE cable for outdoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for cable size 3core, 95 Sqmm including testing after jointing complete all as specified and directed .

S&F cable jointing kit for 11 KV (Earthed) grade XLPE cable for indoor end termination cold shrinkable type joint complete with jointing material and accessories suitable for 3 core 95 sqmm XLPE cable including testing after jointing complete all as specified and directed .

M&L for aluminium condutor steel reinforced (ACSR)conductor of suitable size for binding connections on HT side complete all as specified and as directed.

Supply and erection in true vertical position steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts and screws, type 410 SP-55 (11.0 metres long) all as specified duly painted with two coats of black bituminous paint internally through out and externaly for embeded portion and painting with one coat of red oxide primer, applying two coats of synthetic enamel aluminium paint on remaining exposed surfaces after errection complete, painting with synthetic enamel paint of colours black and red alternate strips of 30cm width upto 1.5 mtr from the top of coping complete including making suitable holes where required complete all as specified and directed. Note : PCC in foundation, coping, Earth work ( Excavation, Returning & refilling and removal) will be measured and paid separately under relavent items.

S&F cross arms, bracings, pipes, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint complete all as specified and directed.

Excavation in trenches any type of soil not exc 1.5 mtr wide and not exc 1.5 mtr in depth for foundation, pipe, laying of cable etc not exc 10 Sqmtr on plan and not exc 1.5 mtr in depth and getting out complete all as specified and as directed.

Description same all as per item No 10 above, but depth exc 1.5 mtr but not exc 3.0 mtr.

Returning filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm in soft/loose soil complete all as specified and directed.

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

M&L for cutting the tarmac/ hard standings and excavating in trenches across the road for laying cable including making good the excavated portion by means of PCC (1:3:6), type C2 matching with the surroundings complete all as specified and directed.

S&F 100 mm bore GI tubing light grade ISI marked with requisite fittings laid in trenches or crossing roads/ paths/ culverts/ along poles/ walls complete all as specified and directed.

M&L for earthing complete with galvanised steel earth plate electrode 600mm X 600mm X 6mm thick buried directly in ground vertically earth pit not less than 2.25 meter deep below normal ground level (with top edge of earth plate not less than 1.5 meter below ground level) connected to GI earth strip of size 32x6 mm as earthing lead by means of bolts, nuts and washers all as shown in electrical plate No 3 of MES Scedule part I (2009) with conected to eath test point including adequate quantity of charcoal dust and comman salt, PCC (1:3:6) type C-1 chamber and for earth pit with 40x40x6mm mild steel angle iron frame for cover. precast RCC cover 40mm thick (1:2:4) type B1 using 20 mm graded stone aggregate reinforced with 8 mm dia round bars both ways with MS handle 8 mm dia. PGI funnel and wire mesh 20 mm dia GI pipe medium grade for watering and 40mm dia medium grade GI pipe as earth lead protection pipe complete all as specified and directed. Note: GI earth strip and protection pipe upto and including 7.5m is deemed included in unit rate quoted by contractor.

M&L for construction of transformer platform with solid block masonry with surface finishing without using extra cement for the installation of transformer of size 3000x2500x1200 mm complete with PVC coated chain link fencing, angle iron supports, gate and painting complete all as shown in Drg No. CEPZ/TD/350/08 sheet 1/2 complete all as specified and directed.

M&L for PCC (1:4:8) type D-2 (Using 40 mm graded crushed stone aggregate) as in foundation, bedding for poles and stay, mass concretes etc complete all as specified and directed.

M&L for PCC (1:3:6) type C-2 (Using 40 mm graded stone aggregate) as in foundation, filling and mass concrete complete all as specified and directed.

M&L for PCC (1:2:4) type B-1, (Using 20 mm graded stone aggregate) for coping etc complete all as specified and directed.

M&L for good quality dry sand cushioning to under ground electric cable on layer of 8 cm thick before laying the cable and second layer of 15 cm thick after laying the cable as specified in clause 19.75 of MES Schedule part-I (2009) and directed. Note : Sand shall be fined sand as specifed and punned thickness shall be measured and paid.

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

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