REPAIR/MAINT OF RING MAIN UNIT, VCB AND CONNECTED ACCESSORIES AT TECHNICAL AREA, AF STN TUGHLAKABAD UNDER GE (AF) TUGHLAKABAD

Amount

Excavation in trenches in soft/loose soil not exc 1.50 mtrs wide and not exc. 1.5 mtr deep and getting out for taking out/laying cable pole &stay etc including taking out old precast concrete cover complete all as specified and directed .

Returning, filling in, including spreading levelling, watering and well ramming in layers not exc. 25 cm thick complete all as specified and directed.

Removal of excavated surplus soil to a distance not exc. 50 mtr away and depositing where directed at a level not exc 1.5 mtr above the starting point complete all as specified and directed.

M&L for sand cushioning to under ground cable provided with layer of sand (8cm deep before laying the cable and 15 cm deep after laying the cable ie total 23 cm and after punning down sand cushioning will be 18 cm complete all as specified and directed . Note : 18 cm thick only will be considered for pryment purpose.

M&L for precast concrete cover class HV type 1, flat size 300mmx180mmx40mm laid in trenches for cable protection complete all as specified and directed.

Supply, laying testing and commissioning in replacement trenches /passing through pipes/ on poles etc cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with stranded aluminium conductor, 11000 volts, grade of size of cable 300 sq mm 3 core suitable for earthed system including taking out unserviceable cable complete all as specified and directed. Note :- (Excavation & Earth work, Sand cushioning and precast concrete cover shall be measured and paid separately under relevant items of Sch. ‘A’).

All as per item No.6 here in before but size 185 sqmm 3 core complete all as specified and directed by Engineer-in-Charge.

All as per item No.6 here in before but size 120 sqmm 3 core complete all as specified and directed.

M&L for defect rectificati on HT 11 KV cable laid in trenches by locating fault with the help of electronic fault locating machine comprising of surge generator pulse, ECHO fault locator with high frequency distance calculator etc.including and additional excavation n.exc .1.5 meter below the surface level in normal alluvial strata required for exposing the cable fault removal of deteriorated portion of cable treating of cable and keeping the same ready for jointing work for cable of size up to 185 Sq mm 3 core. The fault locating equipments will be brought to site within an hours of instruction from complete all as specified and directed.

Supply and jointing cold shrinkable straight through joint with jointing material suitable for HT 11KV XLPE cable of size 240 to 400 Sq mm 3 core complete all as specified and as directed.

All as per item No 10 here in before but suitable for cable size 120 to 185 Sq mm complete all as specified and directed .

All as per item No 10 here in before but suitable for cable size 50 to 95 Sq mm complete all as specified and directed.

Supply and jointing cold shrinkable end termination outdoor joint with jointing material suitable for HT 11KV XLPE cable of size 120 to 185 Sq mm 3 core complete all as specified and as directed.

Supply and jointing cold shrinkable end termination indoor joint with jointing material suitable for HT 11 KV XLPE cable of size 240-300 sqmm 3 core complete all as specified and as directed .

All same as per item No 14 here in before but for size 120-185 Sq mm complete all as specified and directed .

All same as per item No 14 here in before but for size 50-95 Sq mm complete all as specified and directed.

Taking out trolley of vacuum circuit breaker 630/800 Amps 11 KV from the cabinet and opening top cover, de-carbonizing moving and fixed contacts if required, lubricating, inspecting the wiring of Micro processor EF/OC relay, tripping coil electrical and checking for manual/auto tripping system complete and placing back the breaker trolley in its original position all as specified and as directed. Note: (i ) The repair work shall be carried out by authorised service Engineer of DENSON/ CROMPTON GREEVES complete all as specified and directed.. (i) The various unsv items required to be replaced shall be paid seperately. (ii) Calibration of relays shall be paid seperately.

Supply only contact block complete suitable for 630/800 Amps, 11 KV HT VCBs CAT Part No 522/SP. Make : CG all as specified and directed by Engineer-in-Charge.

Supply only contact block complete suitable for 630/800 Amps 11 KV HT VCBs CAT Part No 524/SP Make : CG all as specified and directed

Supply only mechanical castle interlock assembly with key suitable for HT 11 KV VCB of rating 630 Amps CAT Part No 539/SP Make : CG complete all as specified and directed.

Supply only closing coil assembly 230 volts AC/ 24 volts DC, CAT Part No 598/SP all as specified and directed.

Supply only Tripping coil with plunger assembly 230 volts AC/24V DC, CAT Part No 599/SP Make : CG or equivalent all as specified and directed .

Supply only closing coil plunger with 24 volts DC, CAT Part No 604/SP.Make : CG all as specified and directed .

Supply only spout bushing 11 KV for VCB all as specified and directed.

Supply only HT 11 KV PT HRC Fuse CAT Part No 9418/SP Make : CG all as specified and directed.

Callibration of microproccessor E/F and O/C relay of VCB complete and calibrating with portable relay test kit to set time and fault level and adjustment of setting with according to load & time with main grid for proper functioning complete all as specified and directed by Engr-in-Charge.Note: (i ) The repair work shall be carried out by authorised service Engineer of YDENSON/ CROMTON GREEVES complete all as specified and directed.

Supply only in replacment of Vaccum interruptor type WL-33379 (4 inch dia) suitable for HT VCB 630/800 Amps CAT Part No 501/SP Make Cromptn Greaves all as specified and directed.

S&F in replacement trip push button suitable for HT 11 KV OCB/VCB complete all as specified and as directed .

S&F in replacement of indicator lamp LED with holder (R/Y/B in colour) complete all as specified and as directed .

S&F in replacement of CT operated digital ampere meter 0 to 200 Amps flush pattern square type suitable to mounted on existing HT panel complete all as specified & directed.

S&F in replacement of shunt trip coil 30 volts DC for HT 11KV OCB/VCB all as specified and directed b.

Supply & Fix in replacement motor and gear assembly 11KV AC/24V DC UMG-14 type CAT Part No 536/SP Make : CG all as specified and directed .

Supply & Fix in replacement of isolating contact assembly suitable for 630 Amps HT VCB CAT Part No 503/SP Make : CG or equivalent all as specified and directed.

S&F in replacment of Power pack with battery backup 11KV AC/30V DC &nconnected to HT PT secondary circuit including testing for triping complete. Make: Areva/Electromotive/Power pack all as specified and directed

Supply and installations as in replacement of voltage transformer (PT) 3 phase, 3 limb indoor type primary voltage 11 KV and secondary voltage 110 volts type VA class complete all as specified and directed .

Supply & Fix in replacement Digital protective 3 phase over current and earth fault relay for HT 11 KV VCB/OCB panel with high set and RS-485 MC61C complete with connection and testing on full load, all as specified and directed by . Make AREVA/L&T/C&G.

Supply & Fix in replacement of Digital protective 3 phase over current and earth fault relay with high set with CT rating 5A 2 NO+2NC model MC61A complete for HT 11 KV OCB/VCB panel and connection and testing on full load, Make AREVA/L&T/C&G all as specified and directed.

Supplly & Fix in replacement of Master digital trip relay suitable for working voltage 30 Volt DC and connecting the circuit with existing over current and earth fault relas complete all as specified and directed. Make:Areva/Alstom/crompton

S&F in replacement of volt meter 0-15 KV PT operated anloge type of size 150mmx150mm meter suitable to mount on existing HT panel. Make: AE/ Adarsh/HPL all as specified and directed.

S&F in replacement of maintenance free fully charged Nickle cadmium battery 60 Ah, 12 volts complete all as specified and as directed.

Opening the front and rear cabinate of the RMU 3 way/5 way 630/800 Amps 11 KV de-carbonizing moving and fixed contacts if required, lubricating, checking the pressure of SF-6 gas, inspecting the wiring of micro processor EF/OC relay, tripping coil electrical and checking for manual/auto tripping system complete and placing the SF-6 VCB and isolating unit in its original position all as specified and as directed.

Note:(i ) The repair work shall be carried out by authorised service Engineer of MERLIN GERIN/ SCHNEIDER complete all as specified and directed . (i) The various unsv items required to be replaced shall be paid seperately under item No. 43 to 51 (ii) Calibration of relays shall be paid seperately under item No. 52

Supply only plug in type voltage presence indicator system (VPIS) type WIM for 11 KV, RMU complete all as specified and directed by Engineer-in-Charge. Make: MERLIN GERIN/ SCHNEIDER

Supply only SF-6 Ring Main unit fuse 11 KV by opening fuse canisters of RMU positioned behind interlocking cover complete all as specified and directed by Engineer-in-Charge. Make: MERLIN GERIN/ SCHNEIDER

Supply only terminal contact piece with silicone coupling for SF-6 Ring Main unit 11 KV by opening the terminal cover complete all as specified and directed Make: MERLIN GERIN/ SCHNEIDER

Supply only pressure indicator manometer for SF-6 Ring Main unit 11 KV by opening the front cover complete all as specified and directed. Make: MERLIN GERIN/ SCHNEIDER

Supply only ring type current transformer 100/1 Amps for SF-6 Ring Main unit 11 KV by opening the cable compartment cover of fixed the CT on cable elbow plug/T plug complete all as specified and directed. Make: MERLIN GERIN/ SCHNEIDER

Supply only ring type current transformer 50/1 Amps for SF-6 Ring Main unit 11 KV by opening the cable compartment cover of fixed the CT on cable elbow plug/T plug complete all as specified and directed Make: MERLIN GERIN/ SCHNEIDER

Supply only SF-6 gas in safe ring/safe plus by SF-6 gas bottle by removing front cover and on screw manometer and reduction valve and maintained the pressure 14 bar obslute complete all as specified and directed Make: MERLIN GERIN/ SCHNEIDER

Supply only Trifurcation boot 11 KV capacity for cable termination joint of RMU incoming and outgoing terminals including taking out old defective trifurcation boot complete all as specified and directed Make: MERLIN GERIN/ SCHNEIDER

Supply only HT bushing with gaskit for SF-6 Ring main unit 11 KV complete all as specified and directed Make: MERLIN GERIN/ SCHNEIDER

Callibration of microproccessor E/F and O/C relay of RMU complete and calibrating with portable relay test kit to set time and fault level and adjustment of setting with according to load & time with main Tech area power house incl replacement of relay battery for proper functioning complete all as specified and directed by Engr-in-Charge.Note: (i ) The repair work shall be carried out by authorised service Engineer of MERLIN GERIN/ SCHNEIDER complete all as specified and directed .

Supply & Fix in replacement of earth fault protection and indicator relay for Ring main unit including callibrating the relay with existing load and tripping timming complete Make :Crompton Model EMG-1 complete all as specified and directed.

M & L for Earthing complete with galvanised steel earth plate electrode 60×60cm.× 3.15 ×3.15mm thick electrode and 20×3mm copper strip as earthing lead buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to galvanised earth lead wire 4.0mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion earthing complete all as specified and directed .

Schedule of Credit

Deepak Electricals