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

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m deep for laying of cables, pipes, foundation for poles etc., and getting out in hard/dense soil complete all as specified and as directed.

Returning filling in excavated soil upto a depth of 30 cm after riddling of excavated soil (in lieu of sand) for cushioning of cable and refilling of trenches with left over normal excavated soil including spreading, leveling, watering and well ramming in layers complete all as specified and as directed.

Removing surplus soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and as directed.

Surface dressing not exceeding 15 cm deep hard soil complete all as specified and as directed.

Material and labour for Plain Cement Concrete type D2 (1:4:8) using 40mm graded stone aggregate as in foundation filling and mass concrete complete all as specified and directed.

Material and labour for precast cement concrete block masonary with solid block exc 10cm in widith and setting in mortar 1:4 type C1 (1:3:6) complete all as specified and as directed.

Providing cement concrete 1:2:4 type B0 using 12.5mm graded stone aggregate as in coping and similar work complete all as specified and as directed.

Material and labour for 15mm thick cement plaster in Cement Mortar 1:4 on stone surface finished even and smooth without using extra cement complete all as specified and as directed.

Preparation of newly plastered surfaces and applying two coats of cement base paint on walls incl priming plastered and other surfaces with alkali resistant priming paint etc complete all as specified and directed.

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 1637 W of at 50% and 4438 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 1637 W of at 50% and 4438 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.

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 1637 W of at 50% and 4438 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.

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.

Supplying and laying un-reinforced precast concrete cable cover, class LV, Type 1 with peak, size250 mm x 150mm x 40mm complete all as specified and as directed.

Supplying and laying un-reinforced precast concrete cable cover, class HV, Type 1 with peak, size300 mm x 180mm x 40mm complete all as specified and as directed.

Supply, laying & testing of HT UG Cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 95 sq mm complete all as specified and as directed.

Supply, laying & testing of HT UG Cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 120 sq mm complete all as specified and as directed.

Boring of holes under road, pavement, hard standing by trenchless technology using ultra sounding technique and necessary machine including HDPE pipe of 100 mm dia suitable for 0.4 mpa working pressure complete all as specified and as directed.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured ,Al conductor cable of size 95 Sqmm complete all as specified and as directed.

Supply and fix cable jointing kit for 11 KV grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured ,Al conductor cable of size 120 Sqmm complete all as specified and as directed.

Supply and lay in trenches or passing through pipe/fixed to wall/pole and duct cable XLPE insulated , armoured heavy duty electric cable with aluminium conductor , 1100 volt grade ,cross sectional area 50 Sq mm 3.5 Core complete all as specified and as directed.

Supply and lay in trenches or passing through pipe/fixed to wall/pole and duct cable XLPE insulated , armoured heavy duty electric cable with aluminium conductor , 1100 volt grade ,cross sectional area 70 Sq mm 3.5 Core complete all as specified and as directed.

Supply and lay in trenches or passing through pipe/fixed to wall/pole and duct cable XLPE insulated , armoured heavy duty electric cable with aluminium conductor , 1100 volt grade ,cross sectional area 185 Sq mm 3.5 Core complete all as specified and as directed.

Supply and lay in trenches or passing through pipe/fixed to wall/pole and duct cable XLPE insulated , armoured heavy duty electric cable with aluminium conductor , 1100 volt grade ,cross sectional area 240 Sq mm 3.5 Core complete all as specified and as directed.

Material and labour for dismantling by unbolting Existing BER transformers of any capacity and shifting to MES Store yard for further disposal with disconnection of incomer/outgoing connections incuding leveling of old foundation complete all as specified and directed . Note : (i) Rate Quoted by the contractor is deemed to be incuded the rate for labour & JCB/crane charges for shifting to MES Store yard nothing extra will be paid to the contractor.

Material and labour for dismantling by unbolting Existing BER Servo Stabilzer of any capacity shifting to MES Store yard for further disposal with disconnection of incomer/outgoing connections incuding leveling of old foundation complete all as specified and directed . Note : (i) Rate Quoted by the contractor is deemed to be incuded the rate for shifting to MES Store yard nothing extra will be paid to the contractor.

Material and Labour for Maintnenance free earthing complete comprising of 17.2 mm dia 3 mtr long Earth electrode of low carbon steel electriode with 250 micron copper bonding, 50 pounds of Ecosafe based environment friendly backfill and suitable clamp, back-fill earthing enhancing compound shoould strictly be a Eco Safe carbon based conductive concrete type which has a resistivity of less than 0.12 Ohm mtr as per Clause 14.5D of IEEE : 80 standard. Back-fill compound should be electronically conductive (like in metals) and should not depend on moisture for conduction. Back-fill compound should be environment friendly, should solidify when mixed water and set like concrete and should not leach /diffuse into the ground. Back-fill compound shal not mixed with any soil while pouring in the bore hole. Test Certificate as per IEC :62561-7 for Back-fill compound shall be submitted laongwith the material. 17.2 OD SS clamp both side, Eco friendly rust proof heavy duty weather proof Polythylene Earth pit chamber with following dimensions : 254 mm dia (top),330 mm dia (bottom) & 260 mm (height). Make :Tirumala / JEF or equivalent in OBO Betterman/ FURSE/ERICO safeTrode

(i) Prior to installation of maintenance free chemical earthing, soil resistivity test to be carried out at the location where earthing work to be done in presence of Engr-in- Charge/JE (E/M),user and the report has to submit to Garrison Engineer with recommendation of manufacturer, if required additional interconnection of earthing (not more than 04 number of earthing) to achive earth result less then 1 Ohms. The arrangement done for soil resistivity testing and submission of report with recommendation deemed to be included in the quoted rate. (ii) The description/ size/ qty of items mentioned in above are for indicating only however qty/ size may vary at site condition to maintain the earth resistance 1 ohm. The contractor shall quote rate by considering all factors. (iii) Rate of earth energizer compound of 25 Kg of 02 bags and earth resistance reducing liquid 10 litre per cane for each pit deemed to be included in the quoted rate.

(iv) Resistivity of earth energizer compound and resistance reducing earthing liquid shall be certified by any NABL accredited lab carried out as per IEC-62561-7 read with ASTMG57-06, CI-3.4A and the certificate of same shall be submitted by the contractor before commencement of work. (v) Earth enhancing material should not leach into the adjacent soil or underground water channels and its PH value should be in neutral range complete all as specified and as directed. It should solidify when mixed with water and set like concrete. (vi) Copper strip of size 20 x 3 mm shall be fixed on proper post insulator at the instrument end ( copper strip upto 7.5 RM shall be considered in unit quoted rate and extra will be measured and paid separately). (vii) Testing of earth shall be carried out in presence of departmental and user representative and report shall be submitted to Garrison Engineer duly signed by all concerned.

(viii) Earth resistance tester will be provided by the contractor. Tester should be calibrated from authorised company/ lab. (ix) Earthing shall be tested after completion of work by the contractor in presence of Engr-in-charge, user and proper record shall be maintained duly signed by all concerned. After testing if the desired earth resistance of less than 1 Ohm is not obtained, the earthing will be redone at no extra cost to Govt. till desired result is obtained. (x) The contractor shall give a written guarantee of minimum three years for maintaining the earth resistance less than 1 Ohm after certified date of completion. (xi) No further maintenance or periodic watering or recharge shall be required in earthing during its guarantee period of over 03 years in all type of soil including soft/ disintegrated or hard rock. (xii) During the guarantee period, if earth resistance is not maintained less than 1 ohm the contractor has to redo or rectify at no extra cost to Govt till desired result is maintained.

(xiii) A security deposit of value equal to 2.5 % of the rate quoted for chemical earthing for each earthing shall be retained from payment due to the contractor from final bill for the guarantee period. (xiv) The electrode shall carry manufacturer's name. (xv) The connection clamp shall be permanentlly welded to the copper bounded rod to avoid any kind of connectivity loss,.The pre-welded copper bounded rod shall not need any additional clamp for termination. (xvi) The acceptable earth resistance at earth busbar/ test point shall not be more than 0.1 ohm. (xvii) Earth work such as auguring and making good the surrounding area shall carried out in any type of soil. (xviii) The contractor shall submit CPRI India certified document for copper bounded rod to ensure genuineness of material. (xix) Sign board of mild steel sheet 2 mm thick duly painted with two coats of synthetic enamel paint over a coat of red oxide Zinc chrome primer showing result of earthing shall be fixed near the earth pit after completion as directed by engr -in- charge.