PROVN OF 2 X 100 KVA AND 3 X 200 KVA TRANSFORMER ALONGWITH CONNECTED ITEMS FOR CERTAIN UNIT AT RAJOURI UNDER GE 862 EWS

Amount

Supply , installed, commissioning and testing Transformer step down, Copper wounded, Outdoor type complete with standard fittings HT 11 KV/433 volts (at no load) 3 phase 4 wire, 50 Hz, 100KVA capacity core type double copper wound, oil immersed. naturally cooled, Oil naturally Air natural (ON AN) with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with victor group DYn-11 with natural brought out on secondry side (LV side) and having tapping at +- 2.5% & +- 5% on HV side to be changed by means of hand operated off load tap changer gear. The maximum temp rise should not exceed 45 degree celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continous full load run on an ambient temperature of 40 degree Celsies. The Transformer shall be IS- 1180, level II marked and shall comprises of the following :- contd to item No-1.01

(a) Three Nos porceian bushing suitable for 11 KV on HV side complete with copper rods, nuts and washers (b) One cable box on LT side (Secondary side) consisting of four Nos porcelain bushing with copper rods, complete with nuts and washers with cable glands (c ) Oil conservator with filter type drain valve and oil level gauge (d) De- hydrating breather with first type fill of dehydrating agent (Silica Gel) (e) 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. (f) One No 100 mm dia dial type thermometer vapour pressure type , having range 0-120 Degree Celsius with metal guard having mazimum perimeter temperature reading indicator with re- setting devices (g) Two earthing terminal on tank cover to facilitate fixing of 25x4 mm GI iron earth strip for earthing of body (h) Rating plate and terminal marking plate (j) Extra bushing for neutral, out side the cable box for providing independent set of earthing for neutral. contd to item No-1.02

(k) Frist filling of new transformer oil, IS- 335 marked (Make savita/power link) filtered and tested. Transformer shall be painted two coat of epoxy paint all as specified.

Supply , installed, commissioning and testing Transformer step down, Copper wounded, Outdoor type complete with standard fittings HT 11 KV/433 volts (at no load) 3 phase 4 wire, 50 Hz, 200KVA capacity core type double copper wound, oil immersed. naturally cooled,. Oil naturally Air natural (ON AN) with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with victor group DYn-11 with natural brought out on secondry side (LV side) and having tapping at +- 2.5% & +- 5% on HV side to be changed by means of hand operated off load tap changer gear. The maximum temp rise should not exceed 45 degree celsius in oil and 55 degree Celsius in HV/LV winding when measured by resistance method after continous full load run on an ambient temperature of 40 degree Celsies. The Transformer shall be IS- 1180 level II marked and shall comprises of the following :- contd to item No-2.01

(a) Three Nos porceian bushing suitable for 11 KV on HV side complete with copper rods, nuts and washers (b) One cable box on LT side (Secondary side) consisting of four Nos porcelain bushing with copper rods, complete with nuts and washers with cable glands (c ) Oil conservator with filter type drain valve and oil level gauge (d) De- hydrating breather with first type fill of dehydrating agent (Silica Gel) (e) 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. (f) One No 100 mm dia dial type thermometer vapour pressure type , having range 0-120 Degree Celsius with metal guard having mazimum perimeter temperature reading indicator with re- setting devices (g) Two earthing terminal on tank cover to facilitate fixing of 25x4 mm GI iron earth strip for earthing of body (h) Rating plate and terminal marking plate (j) Extra bushing for neutral, out side the cable box for providing independent set of earthing for neutral. contd to item No-2.02

(k) Frist filling of new transformer oil, IS- 335, level III marked (Make savita/power link) filtered and tested.Transformer shall be painted two coat of epoxy paint all as specified.

Supply, laying, testing and commissioning HT cable 11 KV grade, XLPE insulated (earthed) screened, PVC bedded, galvanized iron strip armoured with stranded aluminium conductor cable of cross sectional area 120 sqmm; 3 core, ISI marked with IS:7098 (part-II) as amended upto date in trenches/ ducts/ through pipes etc and making connection by providing suitable aluminium lugs with proper crimping, including removal of old unserviceable defective cable of any size and capacity complete all as specified and directed.

Cable jointing kit for 11 KV (earthed) grade cable for outdoor termination heat shrinkable type joint, complete with and including jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 120 Sqmm, also with and including connecting single thimbles etc after disconnecting of electric supply including removing burnt out jointing kit etc, complete all as specified and directed.

Material and labour for XLPE insulated, LT armoured electric cable with aluminium stranded conductor 1100 volts grade ,cross-sectional area 150 sqmm; 3.5 core laid in trenches/pipes/ducts/walls with necessary cable lugs and glands, nuts, bolts and washers etc and testing complete all as specified and directed.

Material and labour for XLPE insulated, LT armoured electric cable with aluminium stranded conductor 1100 volts grade ,cross-sectional area 120 sqmm; 3.5 core laid in trenches/pipes/ducts/walls with necessary cable lugs and glands, nuts, bolts and washers etc and testing complete all as specified and directed.

Material and labour for earthing complete with galvanised steel earth plate electrode 600mmX 600mm thickness not less than 6 mm thick buried directly in ground vertically ( earth pit not less than 2.25 metres deep below ground level) with top edge of plate not less than 1.5 metres below ground level, connected to and including galvanised iron strip of size 25 X 4 mm by means of GI bolts, nuts, check nuts and washers of galvanised iron/steel all as per electrical plate no 3 of SSR Part-I connected to earth test point/MCB DBs/Equipment/Machinary all as specified and indicated complete with funnel, charcoal,dust,salt etc and GI Protection pipe 32 mm bore medium grade for protection of GI strip and GI watering pipe of 20 mm bore light grade,40 mm thick precast RCC M15 (nominal mix) cover reinforced with XPM weight not less than 4 Kg/Sqm with suitable handle of 6 mm dia MS bar and angle iron 40x40x4mm frame cover, PCC M-15 (Nominal Mix)pit, excavation and earth work in any type of soil and connected including test point, complete, all as specified and directed. contd to item No-10.01

Note: 1. Earth lead & protection pipe length upto and including 7.50 meter is deemed included in unit rate quoted by the contractor. 2. Earth filling shall be done by vegitable soil. 3. Soil should be free from stone, boulders, aggregate , gravels etc.

M/S PARSHOTAM KUMAR GUPTA

CHOPRA CONSTRUCTIONS

Electromech Engineers