SPECIAL REPAIRS/REPLACEMENT TO BER LT/HT EQUIPMENT (TRANSFORMER AND SERVO STABLIZER) AND CONNECTED ITEMS AT AFS YELAHANKA

Supply, install, testing and commissioning of Transformer of capacity 315 KVA, step down, Outdoor type 11 KV/0.433 KV,50 Hz, 3-phase AC double copper wound, oil immersed, Oil Naturally Air Naturally (ONAN) cooled with external cooling tubes, transformer delta connection on HV side and star connection on LV side in accordance with vector symbol DyN-11 (vector group 4) and having tapping of + or - 7.5% in equal step of 2.5 % changed by means of off load tap changing arrangement and impedence not more than 4.5%. The voltage regulation shall be as per IS including first fill of transformer oil including all fittings /accessories as specified in SSR Part -I and IS -1180. The transformer should have cable box on both HT & LT side and brass bushing rod on both HT & HT side . The limit of temp rise after continuous full load run as specified in SSR part-I and as per latest IS -1180 (2014), Level 3 with total losses should not be more than 890 W of at 50% and 2440 W at 100% load shall be suitably adjusted to suit the maximum ambient temp prevailing at site all as specified comprising with and including the following specifications:- (i) Type of connection arrangement :- MS cable termination box on both HT and LT side. Cable box on LT side consisting of 04 Nos porcelain bushing with brass bushing rods and nuts washerwith extended neutral terminal with bushing on the transformer body for terminating earthing strip and suitable for terminating of cable LT 1100 Volt grade XLPE insulated heavy duty Aluminium including gland joint complete (ii) Cable terminal box HV grade suitable to make termination with 3 core 95/120 sqmm XLPE HT Cable.

(iii) Oil Conservator with filter type drain valve and oil level guage. (iv) Thermometer Pocket (v) Two Earthing Terminal on tank body to facilitate fixing of 32x6mm GI strip. (v) Two Earthing Terminal on tank body to facilitate fixing of 32x6mm GI strip. (vi) One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal. (vi) One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal. (vi) One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal. (vii) Rating plate with terminal marking plate.

(viii) Oil drain filter valve. (ix) Oil filling port on top cover with plug. (x) Air release valve/plug. (xi) First fill of transformer oil conforming to relevant IS 335.1993 (Fourth revision) and with dielectric strength more than 50 KV (xii) Inspection cover. (xiii) Lifting lugs and jack lifting pad support. (xiv) Explosion vent with double diaphragm and sight glass (xv) Silica gel breather or with connecting pipe, first fill of dehydrating agent. (xvi) Hand hole of sufficient size to assess the interior of the tank. (xvii) Cover lifting eyes. (xviii) Oil temperature indicator of approved range, including shut of valve between conservator and main tank. (xix) Drain valve with threaded adaptor. (xx) Filter valve with threaded adaptor.

(xxi) Extra bushing for neutral out side the LV side cable terminal box. Note: 1. All routine tests/Pre commissioning tests to be carried out at site after Installation of transformer in presence of Rep of Accepting Officer. 2.OEM Test certificate shall be furnished by the contractor as per relevant IS. 3.GA drawing and Design drawing shall be submitted for approval of Accepting Officer before placing Order.

Supply, install, testing and commissioning of Transformer of capacity 200 KVA, step down, Outdoor type 11 KV/0.433 KV,50 Hz, 3-phase AC double copper wound, oil immersed, Oil Naturally Air Naturally (ONAN) cooled with external cooling tubes, transformer delta connection on HV side and star connection on LV side in accordance with vector symbol DyN-11 (vector group 4) and having tapping of + or - 7.5% in equal step of 2.5 % changed by means of off load tap changing arrangement and impedence not more than 4.5%. The voltage regulation shall be as per IS including first fill of transformer oil including all fittings /accessories as specified in SSR Part -I and IS -1180. The transformer should have cable box on both HT & LT side and brass bushing rod on both HT & HT side . The limit of temp rise after continuous full load run as specified in SSR part-I and as per latest IS -1180 (2014), Level 3 with total losses should not be more than 603 W of at 50% and 1911 W at 100% load shall be suitably adjusted to suit the maximum ambient temp prevailing at site all as specified comprising with and including the following specifications:- (i) Type of connection arrangement :- MS cable termination box on both HT and LT side. Cable box on LT side consisting of 04 Nos porcelain bushing with brass bushing rods and nuts washerwith extended neutral terminal with bushing on the transformer body for terminating earthing strip and suitable for terminating of cable LT 1100 Volt grade XLPE insulated heavy duty Aluminium including gland joint complete (ii) Cable terminal box HV grade suitable to make termination with 3 core 95/120 sqmm XLPE HT Cable.

(iii) Oil Conservator with filter type drain valve and oil level guage. (iv) Thermometer Pocket (v) Two Earthing Terminal on tank body to facilitate fixing of 32x6mm GI strip. (vi) One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal. (vii) Rating plate with terminal marking plate. (vii) Rating plate with terminal marking plate. (viii) Oil drain filter valve. (ix) Oil filling port on top cover with plug. (x) Air release valve/plug. (xi) First fill of transformer oil conforming to relevant IS 335.1993 (Fourth revision) and with dielectric strength more than 50 KV (xii) Inspection cover. (xiii) Lifting lugs and jack lifting pad support. (xiv) Explosion vent with double diaphragm and sight glass. (xv) Silica gel breather or with connecting pipe, first fill of dehydrating agent. (xvi) Hand hole of sufficient size to assess the interior of the tank. (xvi) Hand hole of sufficient size to assess the interior of the tank. (xvi) Hand hole of sufficient size to assess the interior of the tank. (xvii) Cover lifting eyes. (xviii) Oil temperature indicator of approved range, including shut of valve between conservator and main tank. (xix) Drain valve with threaded adaptor. (xx) Filter valve with threaded adaptor.

(xxi) Extra bushing for neutral out side the LV side cable terminal box.Note: 1. All routine tests/Pre commissioning tests shall be carried out at site after Installation of transformer in presence of Rep of Accepting Officer. 2.OEM Test certificate shall be furnished by the contractor as per relevant IS. 3.GA drawing and Design drawing shall be submitted for approval of Accepting Officer before placing Order. (xxi) Extra bushing for neutral out side the LV side cable terminal box.Note: 1. All routine tests/Pre commissioning tests shall be carried out at site after Installation of transformer in presence of Rep of Accepting Officer. 2.OEM Test certificate shall be furnished by the contractor as per relevant IS. 3.GA drawing and Design drawing shall be submitted for approval of Accepting Officer before placing Order.

Supply, install, testing and commissioning of Transformer of capacity 100 KVA, step down, Outdoor type 11 KV/0.433 KV,50 Hz, 3-phase AC double copper wound, oil immersed, Oil Naturally Air Naturally (ONAN) cooled with external cooling tubes, transformer delta connection on HV side and star connection on LV side in accordance with vector symbol DyN-11 (vector group 4) and having tapping of + or - 7.5% in equal step of 2.5 % changed by means of off load tap changing arrangement and impedence not more than 4.5%. The voltage regulation shall be as per IS including first fill of transformer oil including all fittings /accessories as specified in SSR Part -I and IS -1180. The transformer should have cable box on both HT & LT side and brass bushing rod on both HT & HT side . The limit of temp rise after continuous full load run as specified in SSR part-I and as per latest IS -1180 (2014), Level 3 with total losses should not be more than 392 W of at 50% and 1365 W at 100% load shall be suitably adjusted to suit the maximum ambient temp prevailing at site all as specified comprising with and including the following specifications:- (i) Type of connection arrangement :- MS cable termination box on both HT and LT side. Cable box on LT side consisting of 04 Nos porcelain bushing with brass bushing rods and nuts washerwith extended neutral terminal with bushing on the transformer body for terminating earthing strip and suitable for terminating of cable LT 1100 Volt grade XLPE insulated heavy duty Aluminium including gland joint complete (ii) Cable terminal box HV grade suitable to make termination with 3 core 95/120 sqmm XLPE HT Cable.

(iii) Oil Conservator with filter type drain valve and oil level guage. (iv) Thermometer Pocket (v) Two Earthing Terminal on tank body to facilitate fixing of 32x6mm GI strip. (vi) One No Thermometer Dial type vapour pressure type having range 0-120 degree centigrade with maximum temperature indicator and re-setting device to maximum temperature including needle of temperature gauge : Max reading painted terminal. (vii) Rating plate with terminal marking plate. (viii) Oil drain filter valve. (ix) Oil filling port on top cover with plug. (x) Air release valve/plug. (xi) First fill of transformer oil conforming to relevant IS 335.1993 (Fourth revision) and with dielectric strength more than 50 KV (xii) Inspection cover. (xiii) Lifting lugs and jack lifting pad support.

(xiv) Explosion vent with double diaphragm and sight glass. (xv) Silica gel breather or with connecting pipe, first fill of dehydrating agent. (xvi) Hand hole of sufficient size to assess the interior of the tank. (xvii) Cover lifting eyes. (xviii) Oil temperature indicator of approved range, including shut of valve between conservator and main tank. (xix) Drain valve with threaded adaptor. (xx) Filter valve with threaded adaptor. (xxi) Extra bushing for neutral out side the LV side cable terminal box.