SPECIAL REPAIR AND REPLACEMENT TO TRANSFORMER AGAINST BER AT AF STN GORAKHPUR

Taking down existing BER Transformer of any type and capacity (50 to 630 KVA) from the existing platform including disconnecting all electric connections, transporting and depositing the Transformer to MES Store Yard including taking down Cable Box and of any size and description including use of necessary T&P and making good disturbed surfaces complete all as specified and as directed.

Supply, insatllation, testing and commissioning of step down transformer of capacity 630 KVA outdoor type complete with stranded fitting accessories, HT 11 KV, 3 Phase 4 wire, LT 433 Volt, 3 Phase 4 wire with off load changer on primary side to carry secondary voltage + 7.5 % with tappings at every 2.5 % all as per latest IS 1180-2014 level 2, copper wound oil cooling with fins vector Group: DYN 11, including initial oil filling complete all as specified and as directed including the following accessories:-(a) Three numbers of porcelain bushing , 11 KV with brass bushing rods, nuts, bolts and washers etc inside cable and 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 cables.(c) Oil conservator with filter type drain valve and oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents.(f) Thremometer pocket on tank cover (g) one number 100 mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centrigrade.(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 cap.(o) Air release valve Plug.(p) Four plate solid cast steel detachable rollers.(r) Extanded bushing LT side disconneting chamber with suitable copper busbar to adpt the multiple cables jointing and Any other misc accessories as per manufacturer's instruction including testing.

Supply, insatllation, testing and commissioning of step down transformer of capacity 500 KVA outdoor type complete with stranded fitting accessories, HT 11 KV, 3 Phase 4 wire, LT 433 Volt, 3 Phase 4 wire with offload changer on primary side to carry secondary voltage + 7.5 % with tappings at every 2.5 % all as per latest IS 1180-2014 level 2, copper wound oil cooling with fins vector Group: DYN 11, including initial oil filling complete all as specified and as directed including the following accessories:-(a) Three numbers of porcelain bushing, 11 KV with brass bushing rods, nuts, bolts and washers etc inside cable and 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 cables. (c) Oil conservator with filter type drain valve and oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents.(f) Thremometer pocket on tank cover (g) one number 100 mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centrigrade.(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 cap.(o) Air release valve Plug.(p) Four plate solid cast steel detachable rollers.(r) Extanded bushing LT side disconneting chamber with suitable copper busbar to adpt the multiple cables jointing and Any other misc accessories as per manufacturer's instruction including testing

Supply, insatllation , testing and commissioning of step down transformer of capacity 315 KVA outdoor type complete with stranded fitting accessories, HT 11 KV, 3 Phase 4 wire, LT 433 Volt, 3 Phase 4 wire with off load changer on primary side to carry secondary voltage + 7.5 % with tappings at every 2.5 % all as per latest IS 1180-2014 level 2, copper wound oil cooling with fins vector Group: DYN 11, including initial oil filling complete all as specified and as directed including the following accessories:- (a) Three numbers of porcelain bushing , 11 KV with brass bushing rods,nuts, bolts and washers etc inside cable and 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 cables. (c) Oil conservator with filter type drain valve and oil level gauge. (d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents. (f) Thremometer pocket on tank cover (g) one number 100 mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centrigrade. (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 cap. (o) Air release valve Plug.(p) Four plate solid cast steel detachable rollers. (r) Any other misc accessories as per manufacturer's instruction including testing

Supply, Installation, testing and commissioning of indoor type of oil cooled isotation transformer 200 KVA step-III, IS-2026 Three phase, metalic body unbalanced type, copper wound with standard fitings and accessiones, input voltage of 415 volt , output voltage 415 volt IP-35, vector group Dyn-11, of frequency 50Hz and with following description including first fill of transformer Oil IS 335 ISI marked :-(a) Method of cooling air cooled (b) Rato-1:1 (c) Insulation class-Class E (d) Winding Temperature-Less than 55 C (e) Full load losses Less than 5% (f) No load tosses Less than 0.5% (h) Potential difference between Earth to Neutral voltage- Less than 01 volt Note:- (a) in addItion to the above all standard fittings to be provided as per ISI norms.

Supply, insatllation, testing and commissioning of step down transformer of capacity 100 KVA outdoor type complete with stranded fitting accessories, HT 11 KV, 3 Phase 4 wire, LT 433 Volt, 3 Phase 4 wire with off load changer on primary side to carry secondary voltage + 7.5 % with tappings at every 2.5 % all as per latest IS 1180-2014 level 2, copper wound oil cooling with fins vector Group: DYN 11, including initial oil filling complete all as specified and as directed including the following accessories:-(a) Three numbers of porcelain bushing , 11 KV with brass bushing rods,nuts, bolts and washers etc inside cable and 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 cables.(c) Oil conservator with filter type drain valve and oil level gauge.(d) Dehydrating breather with first fill of dehydrating agent.(e) Explosion vents.(f) Thremometer pocket on tank cover (g) one number 100 mm dia, dial type thermometer vapour pressure type having range 0 to 120 degree centrigrade.(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 cap.(o) Air release valve Plug.(p) Four plate solid cast steel detachable rollers.(r) Any other misc accessories as per manufacturer's instruction including testing

S&F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm 3 Core complete all as specified and directed.

S&F Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm 3 Core complete all as specified and directed.

Excavation in trenches in soft/ loose soil not exc. 1.5 metre wide and not exc. 1.50m deep for HT under ground cable/pole foundation and getting out including forming bottom surface to required level or slope, complete all as specified and directed.

Returning filling including spreading leveling watering and well ramming in layers not exc 25Cm in soft/ loose soil, complete all as specified and directed.