PROVN OF 01X TRANSFORMER (250KVA) ALONGWITH PANEL AND ELECTRIC POLES AT NAMKUM MIL STN UNDER GE RANCHI

Amount

Supply, installation, testing and commissioning Outdoor type, step down transformer of 250 KVA capacity, level-II 11KV/433 Volts (at no load) AC 3 phase, 50 HZ, double copper wound type core, oil immersed, naturally cooled, oil natural Air Natural(ONAN) with external cooling tubes delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group Dyn-11 with neutral brought out on secondary side (LV) and having tappings at (-) 2.5% to 7.5% @ 2.5% on HV side to changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 45 degree celsius in oil and 55 degree celsius in HV/LV winding when measured by resistance method after cotinuous full load run on an ambient temp of 40 degree celsius in oil as prevalling at site. The transformer shall be complete with the fittings and accessories comprising of items as mentioned here as under:

LT side (secondary side) consisting four Nos porcelain bushing with copper/brass studs, complete with nut & washers complete with copper bus connectors of suitable capacity/fittings material in cable box complete.

HT side (primary side) consisting three Nos porcelain bushing with copper/brass studs, complete with nut & washers complete with HT bushing suitable for outdoor mounting of transformer complete.

Oil conservator with filter type drain valve and oil level gauge.strength at 2.5 mm air gap between testing electrodes complete.

Dehydrating breather with first fill of dehydrating agent (silica gel) complete.

Explosive vent & thermometer pocket on tank cover oil level gauge oil drain filter valve lifting lugs oil filling hole with cap/plug with connection plate complete air release valve plug and four nos plain solid cast steel detachable rollers.

One No 100 mm dia , dial type thermometer vapour pressure type having range 0-120 degree celcius with metal guard having maximum perimeter temperature reading indicator with resetting device.

Two earthing terminals on transformer body to facilitate for fixing of 50 x 6 mm galvanised iron earth strip for earthing of neutral and body.

Rating and diagram plate and terminal marking plate.

Rates includes extra bushing for neutral on LT side for providing independent set of earthing for neutral 2 Nos.

First filling of new and unused transformer oil , IS 335 marked filtered and tested upto 60 KV dielectric

Note :- Any other items which are not mentioned above but are essential for smooth functioning of transformer shall also deemed to be included in the quoted rates., Transformer will be installed at PCC foundation & PCC will be measured and paid seperately

Earthing complete with galvanised steel earth plate electrode 600x600x6 mm thick burried directly in ground ( earth pit not less than 2.25m deep below the ground level ) with top edge of the plate not less than 1.5m below normal ground level connected to galvanised earth lead GI wire 4mm dia by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No 3 of SSR part-I connected to earth strip and necessary excavation and earth work in soft/ loose soil, returning filling, disposal of surplus soil, including charcoal dust,common salt, 20mm GI medium grade watering pipe, 15mm GI light grade earth lead protection pipe upto test point,funnel with wire mesh, PCC pit 1:2:4 type B-I using 20mm graded stone aggregate with angle iron frame, 40mm thick RCC cover with 8mm dia for TMT bar @100mm C/C both way complete & testing for required value complete all as directed.

Earthing complete with galvanised steel earth plate electrode of size 60cms x 60cms x 6.0 mm thick as per IS 3043 of 1987 burried directly into the ground ( earth pit not less than 2.25 m deep below the ground level) with top edge of the plate not less than 1.5 meters below normal ground level, connected to the galvanised earth lead by means of bolts , nuts check nuts and washers of galnanised iron or steel using GI strip 32 x 6 mm as earthing lead as shown in electric plate No-3 of SSR- Part-1 connected to earth strip all as specifed or indicated including testing on completion and necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1 :3:6 type C-1 using 20 mm graded stone aggregate, pit, funnel, 15 mm GI meduim grade watering pipe, 40 mm GI light grade earth lead protection pipe, CI frame and cover , wire copper lugs etc mesh, charcoal and common salt in alternate layer complete all as directed

Supply , laying , testing & commissioning XLPE insulated screen, PVC bedded galvanized steel strip on wire armoured electric, power cables heavy duty with aluminium conductor 11KV/6.6 KV, earthed system cross sectional area 95 Sq mm X 3 core laid in trenches or passing through pipe or fixed to wall/poles complete all as directed.

Supply , installation testing and commisioning of LT MCCB Panel Board of suitable size 3.15mm thick weather, dust and vermin proof fabricated out of CRCA sheet steel , MCCB panel board should be manufactured and supplied by ISO 9001 certified OEM of MCCB. The Busbar system should be duly type tested at NABL lab for short time with stand current of 1 Sec. It should be suitable for wall or floor mounting with Double door option, Panel board enclouser should be robust contruction and corrosion resistance, powder coated with seven tank process with locking arrangement fixed on suitable size foundation 60 Cm above the GL by providing angle iron of size 50 x 50 x 6 mm welded on all the four corners embedded in PCC 1: 2: 4 using 20 mm graded stone aggregate up to 30 Cm including electrical connection with lugs & glands complete comprising the following:- :

Aluminium busbar of high conductivity 630 Amps capacity 4 wire system - 01 set

MCCB , 400Amps , 35 KA, 04 Pole-01 Nos (Incoming)

MCCB , 250Amps , 35 KA, 04 Pole-02 Nos (Outgoing)

MCCB , 200 Amps , 25 KA, 04 Pole-01 Nos (outgoing)

MCCB , 100Amps , 25 KA, 04 Pole-01 Nos (outgoing)

Digital type panel mounted Voltmeter 0-500 volts.

Digital type panel mounted Ampr meter 0-500 Amps with CT's .

Three phase Indication lamp LED type, - 01 Set {Set of three Nos (RYB) }

Digital type frequecy meter ,50 Hz, panel mounted

Note: All Internal connection of MCCB from Bus Bar shall be made by using aluminium busbar of rated Capacity

Supply , installation testing and commisioning of LT MCCB Panel Board of suitable size 3.15mm thick weather, dust and vermin proof fabricated out of CRCA sheet steel, MCCB panel board should be manufactured and supplied by ISO 9001 certified OEM of MCCB. The Busbar system should be duly type tested at NABL lab for short time with stand current of 1 Sec. it should be suitable for wall or floor mounting with Double door option, Panel board enclouser should be robust contruction and corrosion resistance, powder coated with seven tank process with locking arrangement fixed on suitable size foundation 60 Cm above the GL by providing angle iron of size 50 x 50 x 6 mm welded on all the four corners embedded in PCC 1: 2: 4 using 20 mm graded stone aggregate up to 30 Cm including electrical connection with lugs & glands complete comprising the following:- :

Aluminium busbar of high conductivity 400 Amps capacity 4 wire system - 01 set

MCCB , 250Amps , 35 KA, 04 Pole-01 Nos (Incoming)

MCCB , 160Amps , 35 KA, 04 Pole-02 Nos (Outgoing)

MCCB , 100 Amps , 25 KA, 04 Pole-01 Nos (outgoing)

MCCB , 63Amps , 25 KA, 04 Pole-01 Nos (outgoing)

Digital type panel mounted Voltmeter 0-500 volts.

Digital type panel mounted Ampr meter 0-500 Amps with CT's .

Three phase Indication lamp LED type, - 01 Set {Set of three Nos (RYB) }

Digital type frequecy meter ,50 Hz, panel mounted

Note: All Internal connection of MCCB from Bus Bar shall be made by using aluminium busbar of rated Capacity

Supply laying testing and commissioning XLPE insulated screen, PVC bedded galvanized steel strip or wire armoured electric, power cables heavy duty with aluminium conductor 1100V, earthed system cross sectional area 150 Sq mm X 3.5 core laid in trenches or passing through pipe or fixed to poles complete all as directed.

Supply laying testing and commissioning XLPE insulated screen, PVC bedded galvanized steel strip or wire armoured electric, power cables heavy duty with aluminium conductor 1100V, earthed system cross sectional area 185 Sq mm X 3.5 core laid in trenches or passing through pipe or fixed to poles complete all as directed.

S & F Cable joint kit for 11 KV(earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and acessories suitable for 03 core XLPE armored aluminium conductor cable of size 95 sq mm complete all as directed.

Supply,installation and erection in true vertical or to be planted as strut steel tubular swaged welded poles complete with MS base plate of 6mm thick of size 300mmx300mm at bottom duly welded and MS pole cap at top,poles made out of ERW MS tubing confirming to IS1161 part-II, type 410 SP -55(11.0m long) including drilling of holes of required size and nos for fixing of cross arms/clamps, painting with one coat of red oxide primer and two coats of aluminum paint on exposed surface and two coats of black bituminous paint for portion embedded in concrete, painting three black/white bands at lower portion of pole each of 300mm height at 300mm spacing, painting pole no. with black paint at suitable height complete all as directed.

Supply and fixing lightning arrestors set expulsion type complete with all fittings, transmission class, discharge capacity 63 KA, suitable for 11000 volts complete all as directed.

Supply and install HT 11 KV outdoor type gang operated air break switch suitable for horizontal or vertical mounting with drop out fuse having 12 insulator of rating up to 400 amps complete with operating rod GI 20mm dia and handle rubber insulated complete all as directed

Excavation in trenches n. exc 1.5 m wide & n. exc 1.5 m in depth for laying under ground cables/erection of pole and getting out in loose soil , complete all as directed.

All as per item No.13 here in before but depth exceeding 1.5m and not exceeding 3.0m

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

Removal of excavated surplus material (Soil) to a distance n.exc 50 mtr and depositing where directed at a level n.exc 1.5mtr above the starting point complete all as directed.

S & F GI pipe light grade100 mm bore as protection to cable along the pole / across road crossing/through culvert/passing through ceiling/walls with necessary clamps-02 Nos(Flat iron 50x6mm) with ,nuts and bolts complete all as directed.

M&L for Cross arms bracings, support, clamps and back plates fabricated from structural steel section including nuts, bolts, washers etc, 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 aluminum paint complete all as directed

S&F Danger notice plate 20x15 cm and 1.6mm thick mild steel sheet vitreous enamelled white with letter,figure and conventional skull and bones in signal red colour and fixed with MS clamp bolts/ nuts of approved size for LT 1100 VOLT complete all as directed

All as per item No.19 here in before but for HT,25x20cm size

M&L for Sand filling in cable trenches for cable protection with clean dry sand unwashed including gently punning in trenches complete all as directed.

.M&L laying well burnt old size bricks, sub class "B" bricks, straight or curved on plan, laid flat with width equal to length of brick, laid dry over electric cable for protection complete all as directed.

M&L for PCC 1:4:8 type D-2 (using 40mm graded stone aggregate) as in foundation, floors etc complete all as directed.

M&L for PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) as in roof kerbs or mud stops rounded or chamfered edges etc complete all as directed.

M&L for brick work with sub class 'B. bricks straight or curve on plan exc 6m mean radius with in cement motor 1:6 complete all as directed.

M&L for 15mm thick rendering in cement mortar 1:4 to brick masonry wall surfaces on fair faces of brick wall surfaces or concrete surface finished fair & even without using extra cement complete all as directed

M&L for preparing newly plastered walls surfaces and applying Three coats of white wash complete all as directed.

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MONA GENERATOR SEVICES PVT. LTD.