GE ELECT/D-97/2025-2026

Supply,instalation, testing and commissioning of transformer step down, outdoor type copper wound Level-III, IS 1180, 11KV/433 Volts (at no load) AC 3 phase 50 Hz, capacity 500 KVA, core type, Oil immersed naturally cooled, oil natural air natural (ON/AN), with external cooling tubes, delta connected on primary side (HT) and star connected on secondary side (LT) in accordance with vector group DYn-11 with neutral brought out on secondry side (LT) and having taping at +10% in steps of 2.5% on HT side to be changed by means of hand operated off load tap changer. The maximum temperature rise should not exceed 40°C in oil and 45°C in HT/LT winding when measured by resistance method after continuous full load run on an ambient temp of 40°C transformer shall be of BOLTLESS core design. Transformer shall be double wound, core type with low loss, non ageing, high permeability prime grade CAGO with M4 grade or better, perfectly insulated and clamped to minimize noise and vibrations. The transformer shall be IS/IEC 60076 and as per IS-1180 part-I of 2014 marked, Including the cost of PCC foundation & fencing in perimeter location for placing of TRANSFORMER complete all as per IE/IS specification and shall comprise of the following :- (a) One cable box on HT side (Primary side) consisting of three nos porcelain bushing with copper rods complete with nuts and washer with cable glands suitable for reception / taking out 3 core 120 Sqmm, HT 11000 volts grade, XLPE insulated and PVC sheathed, heavy duty , armoured cables including jointing materials complete. (b) One cable box on LT side (secondary side) consisting of four nos porcelain bushing with copper rods for connected bus ducts complete with nuts and washers with cable glands suitable for reception/taking out single core 630 sqmm, LT 1100 volts grade, XLPE insulated and PVC sheathed, heavy duty, armoured cables including jointing materials complete. (c) Conservator with filter type drain valve and oil level guage. (d) De-hydrating breather with first fill of dehydrating agent (Silica Gel). (e) Explosive vent, Thermometer pocket on tank cover, oil level guage, Oil drain filter valve, Lifting lugs, oil filling hole with cap/plug with connection plate complete, Air release valve plug and four nos plain solid cast steel detachable rollers. (f) One no 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120° C with metal guard having maximum perimeter temperature reading indicator with re-setting device. (g) Two earthing terminals on tank cover to facilitate fixing of 50 x 6mm galvanised iron earth strip for earthing of body.

Supply, installation, testing and commissioning of 11 KV, 630 Amps, 21 KA/3 sec outdoor type Ring main unit (RMU) fully motorized IP 54 protection plug in type extensible on one side SF6 gas insulated (5 way) with metering plate form mounted compact switch gear consisting of 02 Nos load break switch as incommer and 03 Nos outgoing VCBs , all live parts, bus bars VCB will be enclosed in robotically welded minimum 2.5 mm thick stainless steel tank filled with manometer fixed, SF 6 gas IP 67 Degree of protection and tested for internal arc 20 KA/1 sec as per latest IEC 62271-200 complete installed on plateform as recommended by OEM, including the cost of PCC foundation for placing of RMU on plinth complete all as specified and directed. The unit shall include the following with all necessary standard fitting required at site & the cost of PCC foundation for placing of RMU on plinth complete all as specified & as directed by Engineer-in-charge. (A) Incoming Load Break Module - 02 Nos each switching unit shall be designed as a three position switch. This three function switch combines the functions of switch disconnector and earthing switch cables switch 12 KV, 630 Amp, 21 KA - 01 Set. Snap action mechanism for motorised and manual (Both) operation with integrated earthing switch - 01 Nos. Cable bushing 630 Amp standard C bushing - 01. Fault passage indicator, On N load break switch where N= no of load break switch >>s/c & E/F FPI with digital display to be added for detection of cable fault. ON, OFF, EARTH mechanical indication on the front mimic of the panel - 01. Capacitive voltage indication fixed type LED display - 01. ON, OFF, TRIP mechanical indication on the front mimic of the panel - 01. Cable box for termination of cable up to 1 No. x 120 sq.mm - 01.Cable cover standard - 01. Set of 12kV Cable Termination Boots - 01. Cable entry bottom, front - 01 (B) Out going VCBs - 03 Nos consisting of following - function unit consist of vaccum circuit breaker in combination with a three position switch. The three position switch fulfills the operation of the disconnector function and earthing function circuits breaker unit is equipped with an current transformer for the protection of distribution Transformer vaccum circuit breaker 12 KV, not less than 630 A, 21 KA - 01. Spring assisted closing with stored Energy triping mechanism for motorised operation with integrated earthing switch - 01. live cable LED indicators through capacitor voltage dividers mounted on the bushings push button for breaker trip - 01 sec O/C + E/F self powered numerical protection relay with low and High set for Over current and earth fault Relay should have facility to display the maximum loaded phase current also current also relay shall record minimum 5 fault records with time stamping - 01 Alarm trip indication 6 window annunciator for transformer faults Mechanical ON/OFF/EARTH indication -01.

Supplying, laying, jointing testing and connecting of XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) 120 sqmm 3 core with multi stranded aluminium conductors, IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in DWC pipe including jointing & testing complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation, earth work ,cable protection , DWC pipe, cable joint shall be measured and paid separately under respective items of schedule. (ii) The contractor will be responsible for taking permission from appropriate authority i.e. NHAI / IGL or other agencies/ Units , if needed for above said work. (iii) The cost quoted is deemed to be included for repairs / rectification for damages done to the existing electrical / communication / water supply system / Sewage System during execution of work

Supply and fixing of cable end jointing kit for 11 KV grade cable for outdoor terminal heat shrink type joint complete with jointing material and accessories suitable for XLPE armoured Aluminium conductor cable of size 3 core 120 sqmm omplete all as specified and directed by Engineer-in-charge.

Supplying, laying, jointing testing and connecting of XLPE insulated, armoured heavy duty electric cable with aluminium conductor, 1100 Volts grade, cross sectional area 630 Sqmm Single Core laid in trenches / ducts / encased in DWC pipe including jointing & testing complete all as specified and directed by Engineer-in-charge. Note :- (i) Excavation, earth work ,cable protection , DWC pipe, cable joint shall be measured and paid separately under respective items of schedule. (ii) The contractor will be responsible for taking permission from appropriate authority i.e. NHAI / IGL or other agencies/ Units , if needed for above said work. (iii) The cost quoted is deemed to be included for repairs / rectification for damages done to the existing electrical / communication / water supply system / Sewage System during execution of work

Supply, installation testing and commissioning of LT panel board outdoor type made of stainless steel (SS 316) Design verified as per IS/IEC-61439-1&2 by CPRI approved manufacturers along with FAT floor mounted 500V AC 3 Phase, 50 Hz factory made outdoor type, floor mounted double front execution, made out of 3.15 mm thick SS 316 and inner compartment should be 2 mm with arrangement for bus trunking entry from top of the panel with lifting angle 50x50x6mm base of 450mm height. Cable of size upto 1000 sqmm single core seven run entry/out from bottom confirming to degree of protection IP-65, gasketing of PU foam gasket ensuring IP protection with temperature and stand by capacity 40 to 80 °C with power coating and locking arrangements. LT panel mounted on 02 Nos, PCC pillars including excavation and earth work (PCC 1:2:4) type B1 and 15mm plaster of cement (1:6). The LT Panel having Aluminium bus bar 3 phase and neutral 1000 Amps ,415 volts, fixed horizontally, duly insulated with heat shrinkable sleeves in colour code - 01 Set and should be pre-wired proper spacing to accommodate all accessories, cable connection with suitable size of lugs/ thimbles and cable glands comprising of the following:- Incoming: (i) ACB with manual drawout with microprocessor release type 4 pole 800Amps, 50 Hz with ultimate breaking capacity Icu 50 KA at 415 volt - 01 No. Outgoing: (i) MCCB 4 pole 415 V breaking cap 25 KA , current rating 250 Amps - 02 Nos (ii) MCCB 200 Amps 4 pole 415 V breaking Cap 25KA - 02 Nos Measuring Equipments: (ii) Multifunction meter with communication ports RS 485/232, 5 display, class-1. - 01 set (ii) Indication lamps R,Y,B LED type

M&L for earthing complete with copper earth plate electrode of size 60cmx60cmx3.15 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5m below normal ground level, connected to copper strip 20 X 3 mm by means of electric arc welding / brazing as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other side complete all as specified, including testing and commissioning complete all as specified and directed by the Engr-in-Charge. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast PCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe light grade etc. (b) The quoted rates shall also deemed to include the cost and earth strip and protection pipe upto 7.5 meter beyond the earth plates electrode or up to the test terminal block.

M&L earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5m below normal ground level, connected to galvanized iron strip 25X4 mm by means of electric arc welding of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other side complete all as specified, including testing and commissioning complete all as specified and directed by the Engr-in-Charge. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast PCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe light grade etc. (b) The quoted rates shall also deemed to include the cost and earth strip and protection pipe upto 7.5 meter beyond the earth plates electrode or up to the test terminal block.

Supply and fixing of Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and directed by the Engr-in-Charge.