SPECIAL REPAIR OF BER TRANSFORMER AT HARNI JCOS/ OR MD ACCN AND HQ 617 (I) AD BDE COMPLEX UNDER GE (A) BARODA

Amount

Supply, install, test and commissioning outdoor type copper wound step down transformer of capacity 100 KVA, outdoor type complete with standard fittings, HT, 11 KV, 3 phase, LT 433V, 3 Phase, 4 wire with off load tapping on primary side to vary secondary voltage + 7.5% with tapping at every 2.5% all as per IS:1180-2014 Part-I including all amendments to till date with complete all as specified and as directed and including the following:- (a) In cable end box on HV side with cable glands suitable for HT 3 core cable 95 Sqmm. (b) One cable box LV side consisting of 4 Numbers porcelain with brass bushing rods, complete with nuts and washers with two numbers cable gland suitable upto 3.5 core 300 sqmm LT U/G cable. (c) Oil conservator with filter type drain valve and oil level indicator. (d) Dehydrating breather with fast fill of dehydrating agent. (e) Explosion vents. (f) Thermometer pocket on tank cover including thermometer. (g) Rating plate and terminal marking plate. (h) The earthing terminal two numbers to tank to faciliate fixing of earth strip. (j) Oil level gauge. (k) Lifting plugs. (l) Oil lifting hole with cap/ plug with connection plate complete. (m) Air relief valve plug. (n) Initial filling of transformer oil of dielectric strength not less than 60 KV. (o) Two numbers galvanised iron tubing, light grade, 80mm dia, 2 meter long embeddd in wall on HT & LT side for drawing LT/ HT underground cable. Make: Asian/ Prakash Surya/ Jindal. (p) Tap Changer. (q) The cooling shall be Oil natural Air Natural Type (ONAN). (r) The transformer shall be EEL-2 (formerly EEL-3) as per IS:1180-2014 (Part-I including all amendment to till date). (s) Core material shall be (CRGO) cold rolled grain oriented steel.

Material and labour for earthing complete with galvanized steel earth plate electrode of size 60cm x 60cm x 6mm buried directly in ground (earth pit not less than 2.25 meter deep below the normal ground level) with top edge of plate not less than 1.5 meter below the normal ground level connected to galvanised iron earth strip 32mm x 6mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel, protected by galvanised iron pipe light grade 40 mm bore all as shown on electrical plate number 3 of SSR Part-I connected to earth test point electrode. PCC pit with RCC cover, funnel with wire mesh, watering pipe 20mm dia protection pipe etc and testing on completion complete all as specified and as directed. Note Number 1: The unit rate shall also include for earth work in hard/ dense soil, PCC (1:3:6) type C1 (using 20mm graded stone aggregate) chamber, RCC 1:2:4 type B-1 (using 20mm graded stone aggregate) cover 50mm thick reinforced with 8mm dia TMT bar @ 150mm C/C both ways, funnel with watering pipe 20mm dia medium grade, galvanised iron protection pipe light grade 40mm dia and wire mesh complete in addition to item No 1 (a) to (e) of premable (Notes) under sub-heading earthing, specified on Serial Page No 389 of SSR Part-I. Note Number 2: Earthing strip and galvanised iron protection pipe beyond 7.5 meter will be measured and paid separately, if required. Note Number 3: PCC pit shall be provided at least 500mm away from the pit and not on the earth pit itself.

BK CONSTRUCTION

SHRI HARI CONSTRUCTION

Gayatri Associates

City Light