PROVN OF 100 KVA TRANSFORMER FOR NFS NODE ATAGRA CANTT UNDER GE (EAST) AGRA

Amount

Supply, Installation, commissioning and testing of transformer copper wound step down 100 KVA out door type11/0.433 KV at no load 3 ph, 4 wire 50 HZ AC with oil immersed air naturally cooled (ON AN type), with external cooling tubes / radiatiors, Double wound core type copper wound having no load voltage ratio 11 KV / 415 volts corresponding to principal tapping delta connected primary side (HV Side) and star connected on secondary side (LV side) in accordance with vector symbol DYN 11 (Vector group - 4) with neutral brought out on LV side and having tapping on HV side for constant out put so as to altervary secondary voltage from + 2 ½ %, +5% and + 7 ½ % in step to be changed by mean of manual off load tap changing arrangements comploete confirming to IS-1180 Pt-I 2014 all as specified. The transformer shall be complete with following fittings and accessories :-

Oil conservator tank with filling hole and cap drain and oil level guage.

Silica gel breather with oil seal and first fill of dehydrating agent.

Pressure relief valve with automatic resetting arrangement after release of pressure – 01 Set.

Oil temperature gauge having range 0-1200 C with max reading 100mm dia with shut off valve between the conservator and main tank.

Double float Buchholz relay with alarm and trip contacts with one No. of shut off valve.

Adequate No. of thermometer pocket including one number for accommodating bulb type thermometer.

Drain cum bottom valve.

Top filter valve.

Prismatic oil level gauge.

Inspection cover.

Cover lifting lugs

Jacking and lifting lugs

Rating and diagram plate.

Separate neutral bushing brought out for earthing on LV side.

First filling of transformer oil confirming to IS : 335 – 1972.

Earthing terminals -02 Nos located on diagonally opposite transformer tank base including lugs

Transformer should have cable box on LT side and brass bushings on HT

Material and labour for transformer plate form with step of size 2.5 mtr x 2.0 mtr x 1.5 mtr height made out of brick construction including excavation, PCC and rendering etc complete all as drawing No. TD-699 sheet 1/1 complete all as specified and directed.

S&F cross arms of MS angle or channel iron including flat iron clamp with bolt, nut & washers drilling for bolts in any shape or size as indicated or directed and including painting with one coat of red oxide primer an two coat of aluminium paint before fixings and one coat of aluminium paint after fixing complete all as specified and directed.

Supply, installation, commissioning and testing of switch air break gang operated HT 11 KV triple pole with 12 insulator 200 Amps rating with drop out fuse assembly with fuse carrier out door use, 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 50 mm x 6 mm including MS channel of suitable size and length for fixing GOD/DO including bolts, nuts and washers etc complete all as specified and directed

Supply laying, jointing, testing & commissioning in pipes / ducts / trenches / under floor / under road HT XLPE cable insulated, screened, PVC bedded, galvanized steel strip or wire armoured electric power cable (Heavy duty) with aluminium stranded conductor 11 KV "Earthed grade confirming to IS 7098 (Part-II) of 1985 cross sectional area 95 Sqmm 3 core complete all as specified and directed.

Supply, fixing, jointing & testing cable jointing kit for 11 KV (earthed) grade cable for out door termination cold shrinkable type joint complete with jointing material and accessories suitable for HT XLPE armoured aluminium conductor cable of 95 sqmm 3 core complete all as specified and directed.

Supply, fixing, jointing & testing cable jointing kit for 11 KV (earthed) grade cable for in door termination cold shrinkable type joint complete with jointing material and accessories suitable for HT XLPE armoured aluminium conductor cable of 95 sqmm 3 core complete all as specified and directed.

Supply, laying, jointing, testing and commissioning LT XLPE Insulated, PVC sheathed armoured heavy duty electric cables LT 1100 volt grades with aluminium stranded conductor of size 120 sqmm x 3.5 core confirming to IS 7098 (Part-I) of 1988 passing through pipes, in duct, on poles, in trenches, under road etc complete all as specified and directed.

M&L for earthing for transformer body, transformer neutral, LT feeder pillar box etc with galvanized MS earth plate of size 600 x 600 x 6 mm thick burried directly in ground not less than 2.25 mtr below ground level, earth plate paced on all size with charcoal mixed with slat to a thickness of 150 mm in layers, connected by GI earth strip of size 32 x 6 mm thick, soldered and revetted to earth plate. GI earth strip will be protected by using 40 mm bore GI pipe (light grade) earth plate to transformer body, LT feeder pillar box, and neutral of transforer etc complete the earthing includes PCC pit chamber, RCC pit cover and frame, watering pipe 20 mm bore, funnel with wire mess with necessary earth work including disposal of surplus soil to a distance not less than 50 mtr etc complete all as specified and shown on electrical plate No.3 of SSR Part-I - 2009. Note :- Main earthing lead from earth plate to test point & up to 7.5 mtr to be provided. The cost for the same shall be deemed to be included in the above quoted rate.

M&L for earthing of poles with GI wire 4 mm dia with galvanized MS earth plate of size 600 x 600 x6mm thick buried directly in ground vertically to a depth not less than 2.25 mtr below ground level, earth plate shal lbe packed on all side with charcoal mixed with salt to a thickness of 150 mm in layers, connected to GI earth wire 4 mm dia (8 SWG) protected by GI pipe 15 mm bore (light grade) and watering pipe 20 mm dia (light grade) of suitable length with necessary earth work including disposal of surplus soil to distance not less than 50 mtr, PCC pit chamber with RCC cover frame, funnel, wire mesh. The GI earth wire 8 SWG underthe earth and on the pole up to a height of 1.5 mtr shall also be protected by 15 mm dia GI pipe (light grade) & GI pipe to be fixed with poles by the means of 2 Nos flat iron clamp 25 x 3 mm size complete with bolts, nuts and washers etc. all as specified and shown in electrical plate No.3 of SSR part-I - 2009. Note :- Main earthing lead from earth plate to test point & up to 7.5 mtr to be provided. The cost for the same shal lbe deemed to be included in the above quoted rate.

M&L for lightening arrestor non linear resistor type or exclusion type conforming to IS - 3070 Part-I complete, line discharge or transmission class - 2 normal discharge current 10 KA & high discharge 100 KA assembly suitable for 11 KV including all clamps, nuts, bolts and washers and connecting to earth with 32 x 6 mm GI strip complete all as specified and directed.

Supply, installation, testing and commissioning outdoor type cubicl panel board suitable for 3 phases, 4 wire, 415 volts, 50 Hz and CPRI approved for 50 KA rupturing capacity at 415 volts, factory made in an approved factory having seven tank treatment process for powder coating with thickness not less than 60 microns provided with suitable gasket to make it dust / vermin proof & general construction confirming to IS : 8623/93 comprising of the following :-

(a) OUTER SHELL : The outer sheel shall be made out of 3.15 mm thick CRCA sheet steel & MS angle section 50 x 50 x 6 mm frame with front & back openable, double door system lockable / openable by keys from both sides having flush pattern fency locks with louvers & air vent gasket for natural flow of air "U" type gasket shall be used to make the outer shell completely vermin proof. The bottom of the outer shell contains a detachable plate having provision for entry of armoured cable of adequate size with glands. The outer shell shall be powder coated with pure polyester Siemens grey structural RAL 7032 shade. The dimension of the outer shell should be adequate to accommodate inner shell described below giving 75 to 100 mm space all around & shall be fabricated in such a way that the complete inner shell alongwith its control gears & accessories could be taken outside without disturbing outer shell. The outer shall shall be mounted on a zinc metal coated stand having zinc coating not less than 100 microns. Provision of threaded earthing stud at bottom & lifting lugs of suitable size at top to lift the panel, safety shall be made with degree of protection of outer shell shall be IP-56. Computer out self adhesive vinyl danger notice plate having conventional symbol of bone & skull be provided.

(b) INNER SHELL : Inner shell made out of 2.0 mm thick CRCA sheet duly compartmentalized for each control gear, front & back openable single door system lockable / openable by keys from both sides having chromium plated 19 mm dia fancy locks ( 02 Nos in each compartment) having louvers & air vent gasket fro natural flow of air, "U' type gasket shall be used to make the inner shell completely vermin proof & to accomopdate incommer / out going MCCBs and TPN electrical grade aluminium busbar of rating not less than the 1.5 times the rated capacity of the incommer MCCB. The TPN busbar shall be insulated with colour coded heat shrinkable sleeve and shall be mounted on suitable size "F" class insulator made of nonhygroscopic, noncumbustile, track resistant, high strength FRP/SMC/DMC material at an interval not less than 500 mm through out the length of the TPN busbar.

All control wires shal lbe with 2.5 sqmm multistranded copper conductor and sall be properly bunched, tied , ferruled for proper idtification and crimped with adequate size of copper lugs. The cubical shal lhave a bottom channel of size 75 x 40 mm duly coated with zinc metal coating having thickness not less than 100 microns. A detachable predrilled gland plate of thickness 3.15 mm powder coated should be used at the bottom. The inner shell shal be of powder coated Siemens grey structural RAL7032 shade. An inspection lamp LED 5 watt with movable non-ferrous chromium plated arm fitted on top side of inner shell shall be provided. The degree of protection for inner shell shall be IP-42 & cary the following controls :- (i) Incoming (a) MCCB 160Amps, 4 pole, 415 volts, AC supply having ultimate breaking capacity Icu=35/36 KA and Ics=100% of Icu with thermal magnetic release & adjustable overload settin (min 70% to 100%) and fixed magnetic setting complying with IEC 60947-1 and IEC-60947-2 Stds . Qty - 01 No.

(b) Indicating lamp LED type, 230 volts, at the incomer of the unit to show three phase availability at the outgoing of incomer

(ii) Outgoing (a) MCCB 125 Amps, 4 pole, 415 volts, AC supply having ultimate breaking capacity Icu 25 KA wand Ics=100% of Icu with thermal magnetic release & adjustable overload setting (min 70% to 100%) and fixed magnetic setting complying with IEC 60947-1 and IEC-60947-2 Stds. Qty - 01 Nos. (b) MCB 40 Amps, single pole, 220 volts, "C curve" AC supply having breaking capacity 10 KA Qty - 01 No. (c) Spare MCCB of 125 Amps 4 pole, 415 volts.

Note (i) The contractor shall submit proposed drawing of the panel interlia mentioning make of switch gears to be incorporated alongwith name of panel manufacturer for approval of GE before manufacturing. (ii) The quoted rate is inclusive of the cost of danger notice plate of suitable size and marking of letters with PVC sheelt / Stickers such as incoming and outgoing and capacity of breakers etc. (iii) The cost of fixing of the panel on suitable PCC (1:3:6) type C-1 (using 20 mm graded balck trap / basalt/ granite stone aggregate) foundation as directed by Engineer in chage is deemed to be included in the quoted rates by the contractor for the above item. (iv) The bottom of panel shall have minium 45 cm height from existing ground / floor level.

Excavation in trenches in soft/loose soil N. exc 1.5 Mtr wide and not exc. 1.5 Meter deep and getting out including forming bottom surface for laying of cable complete all as specified and directed.

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

Removing surplus soil to a distance n.exc 50 Mtr and depositing where directed at a level n.exc 1.5 mtr above the starting point complete all as specified and directed

M&L for sand cushioning to UG cables (8 cm deep before laying of cable and 15 cm deep over the cable) with clean, dry and unwashed sand free from sharp particles including gently punning around cable complete all as specified and directed. Note :- Punned thickness only will be considered for payment.

M&L for brick covering width equal to length of brick for mechanical protection to cable with well burnt sub class 'B' bricks laid dry flat complete all as specified and directed.

Supply & laying un-reinforced precast concrete cable cover, class HVP type 2 flat, size 450 x 180 x 40 mm with peak of 65 mm complete confirming to IS-5820 : 1970 for protection of cable complete all as specified and directed.

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

Labour for drilling / boring horizontally under road for laying GI pipe upto 80 mm dia complete all as specified and directed.

M&L for GI tubing 80 mm dia (light grade) with all necessary fitting laid in trenches under road crossing / fixed on poles, wall, under floor etc including necessary clamps for fixing confirming to IS 1239 (Part-I) of 2004 complete all as specified and directed.

Supply and fix danger notice plate of 1.6 mm thick mild steel sheet, viterous enemeled white, with letter, figures and conventional skull and bones in signal red colour and fixed with MS clamps of size 25 x 5 mm flat iron, bolts and nuts of approved size of 25 x 20 cm for HT pole complete all as specified and directed.

M&L for PCC (1:2:4) type B 1 machine moulded kerb stone of (with width 140mm and height 290mm) including embeding in the ground to depth as directed and tomping ground around kerb stone and removal of surplus soil etc complete all as specified and directed

Unnati Engineers

Gupta Automobiles

BRITE INDUSTRIES