SPECIAL REPAIR / REPLACEMENT OF TRANSFORMER AND CONNECTED WORKS AGAINST BER AT AF STATION GORAKHPUR

Amount

Supply, installation, testing and commissioning of step down transformer of capacity 500 KVA, outdoor type, copper wound complete with standard fitting and accessories, HT 11KV 3 Phase, LT 433 volt, 3 phase 4 wire with off load tap changer on primary side to carry secondary voltage ± 7½ % with tappings at every 2½ % all as per IS 1180-2014 BEE level 2, oil cooling with fins vector group : DYN 11, including initial oil fitting complete all as specified including the following accessories :- (a) Three numbers porcelain bushing HT, 11KV with brass bushing rods, nuts, bolts and washers etc inside cable end box. (b) One cable box LT side consisting of 4 Nos porcelain with brass bushing rods complete with nuts and washers suitable for runs of 3.5 core LT under ground cable. (c) Oil conservator with filler type drain valve and oil level gauge. (d) Dheydrating breather with fast fill of dehydrating agent. (e) Explosion vents (f) Thermometer pocket on tank cover. (g) One number 100mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centigrade. (h) Rating plate and terminal marking plate. (j) Earthing arrangement. (k) Oil drain filter valve. (l) Oil drain valve.

(m) Lifting hook. (n) Oil conservator with filling hole and cap. (o) Air relief valve plug. (p) Four plate solid cast steel detachable rollers. (q) Earth bushing for neutral outside the cable box for providing independent earthing for neutral. (r) Suitable size of channel on foundation for fixing the transformer with joint and stopper. (s) PCC plateform complete all as shown on drawing No CEAF/TD/EM/03 SHEET 1/1 Dated 31.10.1994 revision date 09.06.2003 including XPM welded mesh fencing and doors including 75 x 40 mm channel.

Supply, installation, testing and commissioning of step down transformer of capacity 250 KVA, outdoor type copper wound complete with standard fitting and accessories, HT 11KV 3 Phase, LT 433 volt, 3 phase 4 wire with off load tap changer on primary side to carry secondary voltage ± 7½ % with tappings at every 2½ % all as per IS 1180-2014 BEE level 2, oil cooling with fins vector group : DYN 11, including initial oil fitting complete all as specified including the following accessories :- (a) Three numbers porcelain bushing HT, 11KV with brass bushing rods, nuts, bolts and washers etc inside cable end box. (b) One cable box LT side consisting of 4 Nos porcelain with brass bushing rods complete with nuts and washers suitable for runs of 3.5 core LT under ground cable. (c) Oil conservator with filler type drain valve and oil level gauge. (d) Dheydrating breather with fast fill of dehydrating agent. (e) Explosion vents (f) Thermometer pocket on tank cover. (g) One number 100mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centigrade. (h) Rating plate and terminal marking plate. (j) Earthing arrangement. (k) Oil drain filter valve. (l) Oil drain valve.

(m) Lifting hook. (n) Oil conservator with filling hole and cap. (o) Air relief valve plug. (p) Four plate solid cast steel detachable rollers. (q) Earth bushing for neutral outside the cable box for providing independent earthing for neutral. (r) Suitable size of channel on foundation for fixing the transformer with joint and stopper. (s) PCC plateform complete all as shown on drawing No CEAF/TD/EM/03 SHEET 1/1 Dated 31.10.1994 revision date 09.06.2003 including XPM welded mesh fencing and doors including 75 x 40 mm channel.

Supply, installation, testing and commissioning of step down transformer of capacity 160 KVA, outdoor type complete with standard fitting and accessories, HT 11KV 3 Phase, LT 433 volt, 3 phase 4 wire with off load tap changer on primary side to carry secondary voltage ± 7½ % with tappings at every 2½ % all as per IS 1180-2014 BEE level 2, copper wound, oil cooling with fins vector group : DYN 11, including initial oil fitting complete all as specified including the following accessories :- (a) Three numbers porcelain bushing HT, 11KV with brass bushing rods, nuts, bolts and washers etc inside cable end box. (b) One cable box LT side consisting of 4 Nos porcelain with brass bushing rods complete with nuts and washers suitable for runs of 3.5 core LT under ground cable. (c) Oil conservator with filler type drain valve and oil level gauge. (d) Dheydrating breather with fast fill of dehydrating agent. (e) Explosion vents (f) Thermometer pocket on tank cover. (g) One number 100mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centigrade. (h) Rating plate and terminal marking plate. (j) Earthing arrangement. (k) Oil drain filter valve. (l) Oil drain valve.

(m) Lifting hook. (n) Oil conservator with filling hole and cap. (o) Air relief valve plug. (p) Four plate solid cast steel detachable rollers. (q) Earth bushing for neutral outside the cable box for providing independent earthing for neutral. (r) Suitable size of channel on foundation for fixing the transformer with joint and stopper. (s) PCC plateform complete all as shown on drawing No CEAF/TD/EM/03 SHEET 1/1 Dated 31.10.1994 revision date 09.06.2003 including XPM welded mesh fencing and doors including 75 x 40 mm channel.

M&L for Earthing complete with copper plate electrode 600mmx600mmx3.15 mm thick buried directly in ground (earth pit not less than 2.25 RM deep below normal ground level) with top edge of the plate not less than 1.5 RM below normal ground level, connected to copper strip of 25x3 mm by means of bolts nuts, check nuts and washers of galvanised iron or steel all as shown in electric plate No 3, of SSR Part - I, 2009 & all as specified, testing on completion including provision of earth lead protected by 40 mm dia GI pipe medium grade & watering pipe 20 mm medium grade including all excavation and earth work in any type of soil, PCC earth pit with RCC cover, charcoal & salt, PGI funnel with wire mesh etc complete incl taking out old earthing and including making good disturbed surfaces of wall, floor. Note : ( i ) The rate is inclusive of cost of earth lead and protection pipe upto 7.5 m. (ii) Irrespective of what is shown on plate No 3 of SSR Part-I /2009, the earthing pit shall be precasted PCC (1:3:6) type C1 using 20 mm crushed stone aggregate and the cover of earthing pit shall be of precast RCC (1 :2 : 4) type B-1 using 20 mm stone aggregate, reinforced with 6 mm dia round bars @ 75 mm C/C both ways with MS handle 12 mm dia with suitable handle finished with surface all as specified. (iii) The rates quoted by the contractor is deemed to be inclusive of cost of MS sheet of size 300mmX 300mmX3mm size, fixed with necessary nuts and bolts on angle iron of size 40X40x5mm & length 600mm and grouted in the ground with PCC (1:3:6 using 20mm rushed stone aggregate of size 200mmX200mmX250mm including necessary earth work for marking the result. (iv) Soil conductivity will be chcked prior to proceeding for earthing so as to ascertain 2 ohm earth resistance with above specification.

MONA GENERATOR SEVICES PVT. LTD.

M/S MALHOTRA ENGINEERING WORKS