SPECIAL REPAIR TO REPLACEMENT OF BER TRANSFORMER WITH NEW TRANSFORMER AND CONNECTED ITEMS ETC UNDER GE (ARMY) GANDHINAGAR AT GANDHINAGAR MILITARY STATION

Excavation in trenches in any type of soil not exceeding 1.5 m wide and not exceeding 1.5 m in depth without hampering the existing services like PNG, NFS, Water supply line, Electric supply line Incl getting out Soft/Loose soil complete all as specified by Engr-in-charge.

Returning filling in including spreding, leveling, watering and well ramming in layers n exc. 25 cm in softt/loose soil all as specified and directed by Engr-in-charge .

Removing surplus excavated materials (soils) upto a distance not exc. 50 meter and depositing where directed at a level not exc. 1.5 meter above the starting point complete all as specified and directed by Engr-in-charge..

Supply and spread sand in trenches as sand cushioning to underground cable for protection with fine river sand and provide required cover after punning down complete all as specified and directed by Engr-in-charge. Note: Thickness of sand cushion after punning down will be measured and paid)

Material and labour for laying of LV cover Class I, 250 mm x 150 mm x 40 mm laid flat in trenches as protection to LT cable complete all as specified and as directed.

Supply and fixing Cable in trenches or passing through pipe or fixing to pole of 1100 volts grade heavy duty cable with XLPE insulated, stranded aluminium conductor, served with inner sheathing of PVC tape, armoured with galvanised steel wire or strip and overall PVC sheathed nominal cross sectinal area 300 Sqmm, 3.5 core, all as specified and directed by Engr-in-charge.

Supply, install, testing and commissioning including transportation at site, transformer of Energy efficient level-2, step down outdoor ONAN type copper wound of capacity 100 KVA , 11 KV on HT side and 433 Volt on LT side at no load, 3 phase 4 wire, 50 Hz, AC supply oil immersed, laminated iron core naturally cooled with external cooling tubes, delta connected on HT side and star connected on LT side, corresponding to vector group DYN- II with neutral brought out separately for earthing, off load tap changing arrangements on HT side to vary secondary voltage +7.5% in steps of + 2.5%, with and including cable box on HV and LV side complete complete on and conforming to IS complete as per manufacturer recommendation complete with standard fittings conforming to latest edition of IS-1180 (part-I)-2014 and mainly comprising of ECBC norms or latest IS complete all as specified & directed including following accesories all as specified and directed by engineer-in-charge. (a) One cable box HV side consisting of 3 nos porcelain terminal points incl nuts and washer with two nos cable gland suitable for up to 3 core 120 sqmm HT UG cable (b ) Suitable cable box LV side for mounting two LV cable consisting of 4 Nos porcelain with brass bushing rods , complete with nuts and washer with two nos cable gland suitable for LT UG cable providing with bimettalic lugs .( c ) Oil conservator with filler type drain valve and oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents.(f) Thermometer pocket on tank cover incl thermometer. (g) Rating plate and terminal marking plate.(h) The earthing terminal two nos to tank to faciliate fixing to earth strip.(i) Oil level gauge. (j) Lifting lugs (k) Oil filling hole with cap / plug with connection plate complete.(l) Air relief valve plug.(m) four plan solid cast steel detachable roller for transformer (n) 01 No 100 mm dia dial type thermometer vapour pressure type having range 0-120 degree centigrade (o) All other items as specified under particular specification.

Supply, install, testing and commissioning including transportation at site, transformer of Energy efficient level-2, step down outdoor ONAN type copper wound of capacity 160 KVA , 11 KV on HT side and 433 Volt on LT side at no load, 3 phase 4 wire, 50 Hz, AC supply oil immersed, laminated iron core naturally cooled with external cooling tubes, delta connected on HT side and star connected on LT side, corresponding to vector group DYN- II with neutral brought out separately for earthing, off load tap changing arrangements on HT side to vary secondary voltage +7.5% in steps of + 2.5%, with and including cable box on HV and LV side complete and conforming to IS complete as per manufacturer recommendation complete with standard fittings conforming to latest edition of IS-1180 (part-I)-2014 and mainly comprising of ECBC norms or latest IS complete all as specified & directed including following accesories all as specified and directed by engineer-in-charge. (a) One cable box HV side consisting of 3 nos porcelain terminal points incl nuts and washer with two nos cable gland suitable for up to 3 core 120 sqmm HT UG cable (b ) Suitable cable box LV side for mounting two LV cable consisting of 4 Nos porcelain with brass bushing rods , complete with nuts and washer with two nos cable gland suitable for LT UG cable providing with bimettalic lugs .( c ) Oil conservator with filler type drain valve and oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents. (f) Thermometer pocket on tank cover incl thermometer. (g) Rating plate and terminal marking plate.(h) The earthing terminal two nos to tank to faciliate fixing to earth strip. (i) Oil level gauge. (j) Lifting lugs (k) Oil filling hole with cap / plug with connection plate complete. (l) Air relief valve plug. (m) four plan solid cast steel detachable roller for transformer (n) 01 No 100 mm dia dial type thermometer vapour pressure type having range 0-120 degree centigrade (o) All other items as specified under particular specification.

Material and labour for RCC/PCC outdoor plinth/platform required for Trannsformer constructed including stone masonry platform of size 1.5 m x 1.5 m.x 1.5 m with appropriate foundation plastered all over top laid with 100 mm PCC 1:2:4 finished even and smooth such as to make compatible with Manufacturer design and specification The Foundation details will be submitted by the contractor for approval of GE before execution of work.