PROVN OF 100 KVA TRANSFORMER AT NFS NODE RAKHMUTHI UNDER GE SOUTH AKHNOOR

Amount

Supply, installation, commissioning and testing of transformer step down Copper Wound, level 2 ,outdoor type 11/0.433 KV complete with standard fittings / accessories gauges and first fill of oil of capacity 100 KVA with tapping on HT side to vary the secondary voltage complete with electrical connections on HT & LT side including all the accessories/fittings as mentioned and confirming to IS-1180 or latest (level 2), duly installed on PCC platform . The transformers shall conform to the following specific parameters : 1 System voltage (max.) -12 kV 2 Rated voltage HV -11 kV 3. Rated voltage LV- 433 - 250 V* 4. Frequency- 50 Hz +/- 5%* 5 No. of Phases- Three 6 Connection HV -Delta 7 Connection LV- Star (Neutral Star (Neutralbrought out) 8. Vector group- Dyn-11 9. Type of cooling- ONAN 10. Sound should be as per NEMA standard Note : (a) Factory Testing :- Manufacturer of transformer should have inhousing testing facility and the same shall be conducted prior to dispatch from factory. As soon as transformer is ready in factory contractor will intimate in writing to GE and the Accepting Officer. Accepting officer will depute a rep for conducting a test at factory. All the tests in the factory shall be conducted in the presence of department rep, contractor and the factory representative. The satisfactory test result shall be signed by all the concerned and the same shall be dispatched along with the transformer (i) Impulsive test (ii) Temperature rise test at tall top position. Routine test : Routine test shall be conducted on all transformers by the manufacturer as per IS-2026. In addition transformer tank shall also be tested against leakage and vacuum test in factory. (b) The cost of pre-commissioning test to be carried out by EI is included in the quoted rates. The necessary arrangement for pre-commissioning test shall be arranged by contractor and cost shall be incl in rates quoted by contractor. (c) Neccessay completion will issued after the successful inspection by the EI.

XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric cable with aluminium conductor, 1100 Volts grade, cross-sectional area 95 Sqmm, 3 core, laid in trenches or passing through pipes, including suitable lugs and accessories for making connections at both ends, complete all as specified and as directed.

S & F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor type termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm, complete all as specified and directed.

Earthing complete with galvanised cast iron earth plate electrode 60cmx60cmx6mm thick burried directly in ground vertically to a depth not less than 3 meter below ground level with top edge of the earth plate at a depth not less than 2.25 mtr below ground level earth plate surrounded from all sides by 15cm thick packed layer of charcoal dust and common salt filling in alternate layers, all around top and bottom and electrode connection by using GI strip 32mm x 6mm (upto the body of equipment) by means of bolts, nuts, check nuts and washers made of galvanised iron and thimbles. GI pipe 20mm bore light grade for watering with funnel and wire mesh including medium grade GI Pipe 40mm bore protection and 40 mm GI pipe light grade for protection of strip. PCC chamber in cement concrete 1:3:6 type C-2 and RCC pit cover in (1:2:4) type B-1 using 20 mm stone aggregate complete all as shown in Electrical Plate No.3 of MES Standard Schedule of Rates (Part-I) of 2009 complete all as specified and testing on completion i) The unit rate shall include for protection pipe, GI water pipe, wire mesh, funnel, excavation. RCC pit cover, test point, 32mm GI strip from top of earth plate upto 5M above ground level and if GI protection is less than 5 meter, no price adjustment shall be made. ii) If the testing result of earthing work is not been found satisfactorily then the contractor shall do another earthing work at his own cost and nothing shall be permissible on this account. iii) Earthing work will be carried out in presence of MES representative.

Supply, laying and testing XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric power cables with aluminium conductor, 1100 Volts grade, cross-sectional area 70 Sqmm, 3.5 core, laid in trenches or passing through pipes, including suitable lugs and accessories for making connections at both ends, complete all as specified and as directed.

Supply, laying and testing XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, heavy duty electric power cables with aluminium conductor, 1100 Volts grade, cross-sectional area 50 Sqmm, 3.5 core, laid in trenches or passing through pipes, including suitable lugs and accessories for making connections at both ends, complete all as specified and as directed.

Excavation in trenches n.exc. 1.5 mtr wide and n.exc 1.5 mtr deep for foundations of poles/stays/cable etc not exc 10 Sqm area on plan and getting out in any type of soil, complete all as specified and directed.

Returning filling in incl spreading leveling watering and well ramming in layers n.exc 25cm thickness in any type of soil, complete all the specified and directed.

Removing surplus soil to a distance not 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.

Sand cushioning to protection of underground cables, laid 8 cm before laying and 15 Cm after laying of cable, and punned to form an overall layer of 18 Cm thick, complete all as specified and directed by Engineer-In-Charge. Note: Punned thickness shall be measured.

Sub class ‘B’ bricks, modular size, brick covering laid dry, flat, transversally along the length of cable on sand cushioning for mechanical protection of cable, with width equal to the length of the brick, complete all as specified and directed by Engineer-In-Charge.

Construction of brick masonry platform in CM (1:4) (3 x 2.5 x1.2) mtr with XPM fencing with weight not less than 4Kgs/Sqm and angle iron (50 x 50 x 6 ) mm for support gate with locking arrangement. PCC floor type B-1 (1:2:4) 100mm thick over hard core 75 mm thick of broken stone boulders including excavation and earth work, platform white washing, painting of fencing and frame work, complete all as specified and directed.

Design,Supply, installation, testing and commissioning of Cubical type floor mounted LT panel, size 1.00x0.80x0.45M depth, outdoor type factory fabricated made out of CRCA sheet of 3.15mm thick ,fully enclosed and angle iron frame of size 40 x 40 x 6mm thick and T section with front openable double door shutter, dust and vermin proof and rear opening complete with locking arrangement, having a system of bus bars of aluminium of suitable size of 525 Amps duly insulated and mounted on Epoxy/porcelain insulators in totally enclosed chamber with three phase and neutral 415 volts, AC, system prewired with suitable copper wire PVC insulated with all control accessories, provn of suitable cable glands, duly powder coated of approved quality over a coat of red primer with sufficient free space complete to include the following accessories:- Incoming (i) Supply and fix 4 Pole MCCB 125 Amp ,50Hz, 415 V with rupturing capacity 36 KA-01 Nos (ii) R Y B indication lamps LED type- 1 set . (iii) AC Three phase static energy meter of accuracy class 1.0 ,3 X 240 V ,50 Hz with Backlit LCD display of rating 20-100A (measures and displays KWH ,V, Current I, KW, pf last month history of KWH, MD in KW) with special features like TOD, temper logging, optical communication port display in absence of power with transparent hinge type box-01 Nos (iv) Supply and fix capacitor metalized poly propylene heavy duty (MPP-H) for 3 phase ,440 V, 50 Hz System for permissible non- linear load 15% of 20 KVAR capacity Outgoing:- (i) Supply and fix 4 Pole MCCB 63 Amp ,50Hz, 415 V with rupturing capacity 25 KA-03 Nos. (ii) Supply and fix MCB of 2 pole , 63 Amp rating with rupturing capacity 10 KA suitable for 240Volts-02Nos. (iii) Change Over Switch of 100 Amps with center Handle.

CHOPRA CONSTRUCTIONS

darshan kumar gandhi

Jiwan Singh

SHSS ASSOCIATES