REPAIR MAINT OF RING MAIN UNIT ACB PANEL HT VCBS AND ALL CONNECTED ACCESSORIES ITEMS AT TECHNICAL AREA 7 BRD AF STN 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/brick 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.

Laying only old but serviceable precast concrete cover class HV type, flat size 300 mm X 180 mm X 40 mm in trenches for cable protection with cable cover retrieved from srl No 1 here in before complete all as specified and directed.

Supply, laying, testing and commissioning in replacement in trenches /passing through pipes/ on poles etc cable XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts, grade of size of cable 300 sqmm 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.7 here-in- before but size 185 sqmm 3 core complete all as specified and directed.

All as per item No.7 here-in- before but size 120 sqmm 3 core complete all as specified and directed.

M&L for defect rectification of 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 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 Engineer-in-Charge.

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

All as per item No 11 here in before but suitable for cable size 120 to 185 Sq mm complete all as specified and directed.

All as per item No 11 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 by Engineer-in-Charge.

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 15 here in before but for size 120-185 Sq mm complete all as specified and directed.

All same as per item No 15 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 complete all as specified and as directed.' Note:- (i ) The repair work shall be carried out by authorised service Engineer of YAMUNA DENSON/CROMPTION complete all as specified and directed. (i) The various unserviceable items required to be replaced shall be paid seperately. (ii) Calibration of relays shall be paid seperately.

M&L for replacement of fixed contact block complete suitable for 630/800 Amps, 11 KV HT VCBs of complete all as specified and directed. Make:- Crompton Greaves/Schneider/Yamuna Denson

M&L for replacement of moving contact block complete suitable for 630/800 Amps 11 KV HT VCBs complete all as specified and directed. Make:- Crompton Greaves/Schneider/Yamuna Denson

M&L for replacement of mechanical castle interlock assembly with key suitable for HT 11 KV VCB of rating 630 Amps complete all as specified and directed. Make:- Crompton Greaves/Schneider/ Yamuna Denson.

M&L for replacement of closing coil assembly 230 volts AC/ 24 volts DC, complete all as specified and directed. Make:- Crompton Greaves/Schneider/Yamuna Denson

M&L for replacement of tripping coil with plunger assembly 230 volts AC/24V DC, complete all as specified and directed. Make :- Crompton Greaves/Schneider/Yamuna Denson

M&L for replacement of closing coil plunger with 24 volts DC complete all as specified and directed. Make:- Crompton Greaves/Schneider/ Yamuna Denson

M&L for replacement of spout bushing 11 KV for VCB complete all as specified and directed.Make:- Crompton greaves/Schneider/Yamuna denson

M&L for replacement of HT 11 KV PT HRC Fuse complete all as specified and directed. Make:- Crompton Greaves/Schneider/ Yamuna denson.

M&l for 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:- The repair work shall be carried out by authorised service Engineer of YAMUNA DENSON/CROMPTON complete all as specified and directed.

Supply only in replacment of Vaccum interruptor of approved make by GE type WL-33379 (4 inch dia) suitable for HT VCB 630/800 Amps complete all as specified and directed.

S&F in replacement trip push button suitable for HT 11 KV OCB/VCB.

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 OCB/VCB all as specified and directed.

S&F in replacement motor and gear assembly 110 volts AC/24V DC UMG-14 type CAT Part No 536/SP of make crompton greaves complete all as specified and directed. Make:- Crompton greaves/Schneider/Yamuna denson

S&F in replacement of isolating contact assembly suitable for 630 Amps HT VCB complete all as specified and directed.

S&F in replacment of Power pack with battery backup 110V AC/30V DC & connected to HT- PT secondary circuit including testing for triping complete all as specified and directed. Make: Areva/Electromotive/Power pack

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.

S&F 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, Make AREVA/L&T/C&G. complete all as specified and directed.

S&F 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 complete all as specified and directed. Make:- AREVA/L&T/C&G

S&F in replacement of master 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 anlog type of size 150mmx150mm meter suitable to mount on existing HT panel complete all as specified and directed.Make:- AE/ Adarsh/HPL

S&F in replacement of lead acid battery of 12 volts capacity 150 AH complete all as specified and directed by Engineer-in-Charge. Make : Exide/Luminoious/Amaron.

M&L for opening the front and rear cabinate of the RMU 3way/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 complete 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 by Engr-in-charge. (i) The various unserviceable items required to be replaced shall be paid seperately under item No. 43 (a) to (l) (ii) Calibration of relays shall be paid seperately under item No. 44

Supply only plug in type voltage presence indicator system (VPIS) type WIM for 11 KV, RMU complete all as specified and directed.Make:-Crompton Greaves /SCHNEIDER/ Merlin gerin

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.Make:-Crompton Greaves /SCHNEIDER/ Merlin gerin

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:-Crompton Greaves /SCHNEIDER/ Merlin gerin

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:-Crompton Greaves /SCHNEIDER/ Merlin gerin

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.

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:-Crompton Greaves /SCHNEIDER/ Merlin gerin

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.

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:-Crompton Greaves /SCHNEIDER/ Merlin gerin

Supply only HT bushing with gaskit for SF-6 Ring main unit 11 KV complete all as specified and directed.Make:-Crompton Greaves /SCHNEIDER/ Merlin gerin

M&L for 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:-The repair work shall be carried out by authorised service Engineer of MERLIN GERIN/ SCHNEIDER complete all as specified and directed.

S&F in replacement of earth fault protection and indicator relay for Ring main unit including callibrating the relay with existing load and tripping timming complete all as specified and directed. Make:-Crompton Greaves Model EMG-1/SCHNEIDER/ Merlin gerin

M&L for earthing complete with copper earth plate electric 60 cm x 60 cm x 3.15mm buried directly and vertically in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level connected to copper strip 20 x 3 mm as earth lead by means of bolts, nuts, check nuts and washers of galvanised steel and including necessary earth work execution in any type of latent rock, PCC 1:3:6 type C-2 using 40mm graded stone aggregate, chamber and chamber cover 50mm with PCC 1:2:4 using 20mm graded stone aggregate with 8 mm dia CTD reinforcement watering pipe 20mm dia GI, protection pipe for copper strip 40mm dia GI light grade, salt, coal, magnesium sulphate and water funnel etc complete all as per electrical plate No 4 of SSR Part I as specified and directed by Engr-in-Charge .

M/s R P Enterprises

Neeraj Enterprises