SPECIAL REPAIR/ REPLACEMENT TO TRANSFORMERS AT CERTAIN LOCATIONS AGAINST BER AT AF STATION GORAKHPUR

Amount

Supply, installation, testing and commissioning of step down transformer of capacity 200 KVA, indoor 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 1180-2014/2026-1977 (Part 1 to 4) 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.

Supply, installation, testing and commissioning of step down transformer of capacity 400 KVA, indoor 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 1180-2014/2026-1977 (Part 1 to 4) 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.

Supply, installation, testing and commissioning of step down transformer of capacity 315 KVA, indoor 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 1180-2014/2026-1977 (Part 1 to 4) 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 & F in replacement of cable jointing kit for 11 KV (Earthed) grade cable for indoor tremination cold shrink type joint complete with jointing material and accessories suitable for making connection in 3 core XLPE armoured aluminium conductor cable of size 95 sqmm to 120 sqmm including taking out old cable jointing Kit complete all as specified and directed.

Taking out existing old unservicable earthing and Material and labour for new earthing complete with galvanized steel earth plate electrode 600mm X 600mm X 6mm buried directly in ground vertically to a depth not less than 2.25 meter below normal ground level (with top edge of earth plate not less than 1.5 meter below ground level) connected to GI strip 32mm X 6mm main earthing lead by means of galvanized bolts, nuts and washers all as shown in electrical plate No 3 of MES Schedule Part-I (2009) with connected to earth test point & to main switch board etc with & including adequate quantity of charcoal dust and common salt around earth plate, PCC 1:3:6 type C-1 using 20mm graded stone aggregate for earth pit with CI Pit cover of size 300 X 300 mm with standard weight 7 Kg incl MS bar handle, GI light grade watering pipe 20 mm dia with funnel and wire mesh, and 40 mm dia GI light grade earth lead protection pipe, including earth work complete all as specified and directed. NOTE :- (i) The rates quoted shall also deemed to include the cost of Earth test point and earth wire and protection pipe upto 7.5 meter beyond the earth plates electrode and the earth resistance of the whole system shall be as near as possible to 0 Ohm but shall not in any case exced one ohm. (ii) Any joints in earth lead from earth electrode to test point shall not be allowed / permitted. (iii) The rates quoted shall also deemed to include earth work in soft soil ,returning filling in and removal of surplus soil to a distance not exceeding 50mtr

Shifting and depositing of old transformer from site to MES store through crane and vahicle complete all as specified and directed. Note:Arrangement charge of Crane and vahicle for transport shall be included in qouted rate.

M & L for earth continuity conductor of size 32 mm x 6 mm galvanized iron steel strip conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc and taking out old earth continuity conductor complete all as specified and directed

M & L for Rolled mild steel in Joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc (cut to ordinary lengths i.e. within 20mm of the length indicated) and similar work conforming to Fe 410-W (Gde E- 250) quality A and taking out old MS iron complete all as specified and directed.

M & L for PCC (1:2:4) Type B-1 using 20 mm graded stone aggregate as in coping, roof kerbs or mud stops, rounded or chamfered on edges type incl necessary formwork complete all as specified and directed by Engineer-in-Charge.

Diamond Electric Co. (BID ID -3150925)

Yaduvanshi Traders (BID ID -3160357)

M/S MALHOTRA ENGINEERING WORKS (BID ID -3155612)

R.K.ASSOCIATES (BID ID -3160558)

Hindustan Power Corporation (BID ID -3155995)