PROVN OF TRANSFORMER AND ASSOCIATED INFRASTRUCTURE AT AF STN PALAM UNDER GE (AF) PALAM, DELHI CANTT-10

Amount

Supply, Installation, testing and commissioning of Transformer Outdoor type step down transformer, 11KV/433 Volts (at no load) AC 3 phase 50 Hz, 315 KVA capacity, core type copper wound, on HV & LV coil immerse, naturally cooled, Oil natural-air natural (ONAN) with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV side) in accordance with vector group DYN-11 with neutral brought out on secondary side (LV side ) and having 7 step tappings at +/- 2.5 % of each step (+5% to 10% ) on HV side to be 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 continuous full load run on and ambient temp of 40 degree celsius the transformer shall be in accordance with latest IS -1180 (Part-I) (Level2) and comprise of the following:- (Make: Crompton greaves/ ITE Gurgaon/ Powerware/ Transcon) Note: Transformer must be BIS Marked and BEE 2 star label

Item no. 1 contd... (a) Three porcelain bushing suitable for 11 KV on HV side, and including and termination box complete with copper rods, nuts and washers. (b) One cable end termination box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods, complete with nuts and washers. (c) Oil conservator with filter type drain valve and oil level gauge. (d) DE-hydrating breather with first fill of dehydrating agent (silica gel). (e) Explosive vent, thermometer pocket on tank cover, oil level gauge, oil drain filter valve, lifting lugs/hooks, oil filling hole with cap/plug with connection plate complete, air release valve plug and four nos plain solid cast steel detachable rollers.

Item no. 1 contd... (f) One no. 100 mm dia, dial type thermometer, vapour pressure type having range 0-120 degree celsius with metal guard having maximum perimeter temperature reading indicator with re-testing device. (g) Two earthing terminals on tank cover to facilitate fixing of 50x6mm galvanized iron earth strip for earthing of body. (h) Rating plate and terminal marking plate. (j) Extra bushing for neutral, in the LT cable box for providing independent set of earthing for neutral. (k) First filling of new transformer oil, IS-335 marked and tested up to 60 KV dielectric strength at 2.5 mm air gap between testing electrodes. Note: (i) Transformer shall be placed on PCC platform of size 2.5x2.5x 1.0 Mtr. (ii) Cost for Excavation, earth work, PCC and brick work etc shall be included in the quoted rate by the contractor.

Supply, laying testing and commissioning in trenches/passing through pipes/on poles etc cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts, grade of size of cable 95 Sqmm 3 core suitable for earthed system including taking out unserviceable cable complete all as specified and directed by Engineer-in-Charge.

Supply & jointing heat shrinkable end termination indoor joint with jointing material and accessories suitable for HT 11 KV XLPE cable of size 95 Sqmm 3 core complete all as specified and as directed by Engineer-in-Charge.

Supply, installation, testing and commissioning Ring Main unit outdoor type suitable for one incoming and 02 outgoing 11 KV, 3 phase, 50 Hz 3 wire ,SF6 gas insulated confirming to IEC 6733/IEC 60694 outdoor type earthed neutral, extensible breaking capacity 350 MVA IP 54 degree protection, outdoor, free standing metal clad SF6 Ring Main Unit compressing of :- (a) 01 Nos 630A load break SF6 ring switches incoming tee off spring assisted rotating arc type. (b) 02 Nos Outgoing SF6 circuit breaker unit with self-actuating electronic over current relay live cable indicator, emergency trip, push button and internal fault passage indicator with remote indication contacts, external flashers and current reading facility with LCD display. Note : - (a) The Ring Main Unit must be with three position device (ON/OFF/EARTH) (b) The cable doors must be interlocked with earth switch to ensure the cable compartment can be accessed only when switch is in earthed position.

Supply, installation, testing and commissioning outdoor type cubical panel board suitable for 3 phase, 4 wire, 415V, 50 Hz and tested at CPRI for 35 MVA rupturing capacity at 415 volts factory fabricated in an approved factory with CRCA sheet not less than 3 mm thick having modern fabrication process powder coating in approved shade having thickness not less than 100 microns provided with suitable gasket to make it dust and vermin proof and general constructions conforming to IS : 8623/93. The LT panel shall be front and back openable and having inner and outer shells. The inner shells duly compartmentalized for each control gears.The panel should have suitable size of aluminium Bus -bar three phase 4 wire system having current carrying capacity not less than 1.5 times the rated current carrying capacity of the incomer ACB/MCCB. The panel should have the following incoming and outgoing controls duly fixed with the panel by means of suitable link plates complete all as specified and as directed by Engineer -in-charge. (Angle iron frame of size 50mmX50mmX6mm and PCC platform of suitable size for mounting the LT panel is deemed to be included in the quoted rate ) INCOMING (i) MCCB 630A 4 pole ,50KA with adjustable thermal & adjustable magnetic setting - 1 No (i) Digital Multi functional meter VAFPP (voltage , current , frequency,power factor) - 1 No. (iii) Phase indicator lamp (LED type) - 1 Set.(set of three) OUT GOING:- (i) MCCB 250A ,4 pole ,35 KA with adjustable thermal & fixed magnetic setting -01 Nos (ii) MCCB 160 A ,4 pole ,35 KA with adjustable thermal & fixed magnetic setting -01 Nos (iii) MCCB 125 A ,4 pole ,35 KA with adjustable thermal & fixed magnetic setting -06 Nos

Supply, installation, testing and commissioning outdoor type cubical panel board suitable for 3 phase, 4 wire, 415V, 50 Hz and tested at CPRI for 35 MVA rupturing capacity at 415 volts factory fabricated in an approved factory with CRCA sheet not less than 3 mm thick having modern fabrication process powder coating in approved shade having thickness not less than 100 microns provided with suitable gasket to make it dust and vermin proof and general constructions conforming to IS : 8623/93. The LT panel shall be front and back openable and having inner and outer shells. The inner shells duly compartmentalized for each control gears.The panel should have suitable size of aluminium Bus -bar three phase 4 wire system having current carrying capacity not less than 1.5 times the rated current carrying capacity of the incomer ACB/MCCB. The panel should have the following incoming and outgoing controls duly fixed with the panel by means of suitable link plates complete all as specified and as directed by Engineer -in-charge. (Angle iron frame of size 50mmX50mmX6mm and PCC platform of suitable size for mounting the LT panel is deemed to be included in the quoted rate ). INCOMING (i) MCCB 630A 4 pole ,50KA with adjustable thermal & adjustable magnetic setting - 1 No (i) Digital Multi functional meter VAFPP (voltage , current , frequency,power factor) - 1 No. (iii) Phase indicator lamp (LED type) - 1 Set.(set of three) OUT GOING:- (i) MCCB 250A ,4 pole ,35 KA with adjustable thermal & fixed magnetic setting -02 Nos (ii) MCCB 125 A ,4 pole ,35 KA with adjustable thermal & fixed magnetic setting -0 4 Nos

Supply, installation, testing and commissioning outdoor type cubical panel board suitable for 3 phase, 4 wire, 415V, 50 Hz and tested at CPRI for 35 MVA rupturing capacity at 415 volts factory fabricated in an approved factory with CRCA sheet not less than 3 mm thick having modern fabrication process powder coating in approved shade having thickness not less than 100 microns provided with suitable gasket to make it dust and vermin proof and general constructions conforming to IS : 8623/93. The LT panel shall be front and back openable and having inner and outer shells. The inner shells duly compartmentalized for each control gears.The panel should have suitable size of aluminium Bus -bar three phase 4 wire system having current carrying capacity not less than 1.5 times the rated current carrying capacity of the incomer ACB/MCCB. The panel should have the following incoming and outgoing controls duly fixed with the panel by means of suitable link plates complete all as specified and as directed by Engineer -in-charge. (Angle iron frame of size 50mmX50mmX6mm and PCC platform of suitable size for mounting the LT panel is deemed to be included in the quoted rate ) INCOMING (i) MCCB 415 volts .4P, to 250 Amps 35 KA (in going) (ii) Digital Multi functional meter VAFPP (voltage , current , frequency,power factor) - 1 No. (iii) Phase indicator lamp (LED type) - 1 Set.(set of three) OUT GOING:- (i) MCCB 415 volts .4P, to 160 Amps 35 KA (outgoing)– 01 Nos (i) MCCB 415 volts .4P, to 100 Amps 35 KA (outgoing)– 03 Nos (ii) MCCB 415 volts .4 P, to 63 Amps 25 KA (outgoing)-02 Nos (iii) 3 pole Power contactor 40 A - 01 No (iv) Analog time switch 3 module - 01 No (v) On load change over 250 Amp - 01

Supply and laying XLPE LT 1100 Volts grade, armoured underground cable size of 70 Sqmm 3.5 core with stranded aluminium conductor in trenches /passing through pipes/ on poles etc. complete all as specified and directed by Engr-in-Charge.

Supply and laying XLPE LT 1100 Volts grade, armoured underground cable size of 95 Sqmm 3.5 core with stranded aluminium conductor in trenches /passing through pipes/ on poles etc. complete all as specified and directed by Engr-in-Charge.

Supply and laying XLPE LT 1100 Volts grade, armoured underground cable size of 120 Sqmm 3.5 core with stranded aluminium conductor in trenches /passing through pipes/ on poles etc. complete all as specified and directed by Engr-in-Charge.

Supply and laying XLPE LT 1100 Volts grade, armoured underground cable size of 400 Sqmm 3.5 core with stranded aluminium conductor in trenches /passing through pipes/ on poles etc. complete all as specified and directed by Engr-in-Charge.

M&L for earthing with galvanized mild steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25 Mtr below ground level) with top edge of earth plate not less than 1.5 Mtrs below ground level connected to GI strip 32x6mm as earth lead by means of nuts, bolts, thimbles, check nuts, washers of GI or steel, including PCC (concrete chamber) shall be PCC 1:3:6 type C-1 using 20mm graded stone aggregate, with fair finish internal surface of concrete chamber shall be given 15mm thick plaster in CM 1:4, funnel with wire gauge mesh, 80 mm thick RCC pit cover 320 mm x 320 mm of RCC 1:2:4 type B-1 using 20 mm graded stone aggregate reinforced with XPM, JALLI and charcoal dust and common salt all as shown in electrical plate No 3 of MES SSR Part-I (2009) and specified including provision of GI strip protected by 40 mm dia medium grade pipe and watering pipe shall be 20mm bore medium grade, and including all excavation and earth work & connecting the earthing to an earthing test point complete all as specified & directed by Engr-in-Charge.

Taking out old unserviceable LT underground cable of any size from trenches, ducts, pipes etc. including necessary disconnection of the LT cable from LT Panels, poles etc. and including cutting of the LT cable for re-routing as required at site complete all as specified and directed.

M&L for MS work for fencing post and struts made from angle iron and flat iron in any section including cutting tops to shape, drilling holes and notching for fixing of wires etc. confirming to Fe -290 or Fe -330 complete all as specified and directed.

M & L framed work as in doors or gates of angle or other section with gusset plates, rails, braces, etc, complete drilled for fixing of steel sheeting or other covering complete all as specified and directed.

Supply and fixing chain link MS galvanised medium coated as per IS 4826 fencing, 40mm x 40mm mesh & 2 mm dia of wire complete all as specified and directed.

M&L for 5 to 10 mm dia mild steel screw bolts (machine made) with hexagonal or square head at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and nuts etc. complete all as specified and directed.

M&L for preparation of new steel surfaces over 10 cm width or girth and treating surface with black bituminous paint to steel surface complete all as specified and directed

Excavation in trenches in soft/loose soil not exceeding 1.50 Mtr wide and not exc. 1.5 Mtr deep and getting out for taking out/laying cable, poles &stay etc. complete all as specified and directed by Engr-in-Charge.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm thick after the cable have been laid tested complete all as specified and directed by Engineer-in-Charge

Removal of excavated surplus soil to a distance not exc. 50 Mtrs and depositing where directed at a level not exc 1.5 Mtr above the starting point complete all as specified and directed by Engr-in-charge.

M&L for sand cushioning to underground cable provided with layer of sand (8cm deep before laying the cable and 15 cm deep after laying the cable i.e. total 23 cm) complete all as specified and directed.

M&L for brick laid in trenches for cable protection of burnt clay sub class ‘B’ Designation 75, laid dry flat complete all as specified and directed.

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

BRIJ MOHAN LAL AND CO.

Vijay Electricals

Leo Network power systems

Commercial Traders

mayur enterprises

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