REPAIR/ MAINTENANCE OF VARIOUS VCBs, RMUs AND OTHER HT CIRCUIT BREAKERS UNDER GE (AF) MARATHAHALLI

Amount

M & L for repair/maintenance ,cleaning,dusting and servicing for smooth functioning of compact RMU 11 KV 630/800Amp, 3 phase 50 cycle by Grounding of complete panel live parts, thorough cleaning, visual checking, tightness checking, and servicing of breaker panel including breaker carriage along with associated mechanism, metering panel, bushbar/cable chambers, self powered over current and earth falult relay, T-off SF6 circuit breaker module, mechanical fault/on/off indicator etc including replacing of all unservicebale items and refilling of SF6 gas and worn out parts when required etc and confirming smooth reliable operation of RMU unit complete all as specified and directed. Note :- Spare parts required will be measured and seperately under respective items of Schedules Minor spares like nut bolts washers screws, T&P for satisctory completion of job deemed to be included in the job.

Supply LED indicator lamp R,Y,B suitable for RMU. Complete all as specified and directed

Supply Battery 12 V 20 AH. Complete all as specified and directed

Supply spring charging motor suitable for RMU of capcity 250/350 MVA complete all as specified and directed .

M & L for Repair/Maintenance ,cleaning, dusting and servicing, Overhauling of VCB Circuit Breaker, HT 11 KV, of 400/ 630/800 Amp , 3 phase 50 cycle totally enclosed any type switch gear by Grounding of complete panel live parts including HT/LT network,and panles, thorough cleaning, visual checking, tightness checking, and servicing of breaker panel including breaker carriage along with associated mechanism , metering panel, bushbar/cable chambers, motorised spring charging mechanism , DC shunt trip/close coils, operation counter, manual spring charging mechanism , relays, meters , indicators , heater coil, aux supply SMPS , replacing worn out parts and fuses , applying petroleum jelly to moving and fixed mechanical parts for its smooth functioning complete all as specified and directed. Note : (i)The servicing/repairs includes for busbar duct chamber ,cable alleys and connecting accessories . (ii)The rate quoted shall be deemed to include for necessary T&P, nuts bolts, washers gasket,insulation type ,compound VCBs and panels in serviceable condition testing and commmissioning all as specified and as directed by EIC. (iii)Major spares like bushings ,vaccum interupter assembly ,busbar spout ,connections ,circuit spot connections /buffer fixed contacts ,moving contacts ,tank asssembly barriers ,solenoid spares ,dependent spring mechanism /motor mechanism trip unit etc will be measured and paid separtely under relevant item of schedule A .

Supply only following spares suitable for 11 KV VCB 630 to 800 Amps and 11 KV HT panel of make as per OEM of existing make complete all as specified and directed. Epoxy insulator 11KV for VCB complete all as specified and directed.

Isolating contacts flat type -800/1250A complete all as specified and directed. Make :Schneider

Vaccum interrupter for VCB 11KV complete all as specified and directed.

Flex connections for 630/800 A with VI type VG2 or VG4 (2 layer per phase ) complete all as specified and directed.

Closing coil with assembly 110 V DC (CN 1 3 4 9) complete all as specified and directed.

Shunt trip coil with assembly 110 V DC( CN 13 4 1) complete all as specified and directed.

Spring charging universal motor with gear box 110 V AC/DC complete all as specified and directed.

Spring charging motor limit switch complete all as specified and directed.

Ratchet wheel complete all as specified and directed.

Timer switch for energization complete all as specified and directed.

AuxillaryContactor (2NO +2 NC) complete all as specified and directed.

Push to trip Knob (Red ) assembly with spring and housing complete all as specified and directed.

Push to trip Knob (green ) assembly with spring and housing complete all as specified and directed.

On off indicator asssembly with spring complete all as specified and directed.

Secondary plug and socket 24 pins type complete all as specified and directed.

busbar spout assembly for 800 A panel .11kv rated complete all as specified and directed.

Busbar support insulator complete all as specified and directed.

CT Resin cast 12 KV indoor type 100-50 /5A-5A burden (VA) =10 VA, Accuracy class 0.5 S ,Spring sysstem frequency (Hz )=50 System neutral earthing effective earthed and extended current rating 120 % rated dynamic current KA (peak)=46 should be atleast 2.5 times above rating complete all as specified and directed.

PT assy Resin cast Dry type , drawout type 3P-3L 11 KV/110 V PT unit complete all as specified and directed.

HRC fuse PT HT Side ( VTF -11, 3A) complete all as specified and directed.

Surge diverter /suppressor -12 KV complete all as specified and directed.

Service /Test position limit switch complete all as specified and directed.

HRC Fuse :2A ,4A,6A,8A,10 A or 16 A as required complete all as specified and directed.

LED type indicating lamp with holder assembly (R,Y,B Colour as required )

Rack-in/Rack out handle complete all as specified and directed.

Space Heaters 80/100 W with thrmostats complete all as specified and directed.

T-N-C Switch complete all as specified and directed.

Auxillary trip relay unit complete all as specified and directed.

Master trip relay unit .Make ASHIDA 08E1S414 or any equivalent other make.

M&L testing and callibration of Digital Numerical relay of VCB/OCB with 3 phase complete with primary /secondaryinjection method as required including checking of working of all electrical measuring instrument and resetting of relay and proper alignment of mechanical sysytem for smooth functioning and trippping at any type of fault developed in feeders complete all as specified and as directed .

M& L for maintenance /servicing of PT unit 11 KV/110 V by disconnecting and taking out from panel mounted position ,checking & cleaning of fixed and moving contact points ,cleaning decarbonising of bus bar connections resin cast PTs using hot blower ,CTC Solution applying backlot (red) solution to the epoxy PT body ,tightening of all nuts ,bolts,washers,and refixing the same PT to the original position ,testing complete all as specified and as directed .

Suppy ,installing ,testing and commissioning in repair of numerical feeder protection relay 50/51 N (Earth over current ) ,67P(3ph directional over current ),67N(Earth fault directional over current ),51V(Voltage controlled over current),37 (3Ph under current ),46(Negative phase sequence over current ),59 N (Residual over voltage ),32(Directional power protection under /over active/reactive power ),81(under over frequency ),49(Thermal Overload),79(Auto rescue),50 BF(Circuit breaker failure direction ),cold pickup ,Inbrush blocking complete all as specified and directed. Note : Relay will be on Modbus protocol

S& F in repair of power packwith battery charger Input voltage 230 V AC 50 HZ Out put 110/30Volts DC, 20A boost cum floating indications complete all as specified and directed.

M&L for SF6 gas charging including opening and sealing the gas chamber of RMU complete all as specified and directed.

Supply & Fix in replacement of SF6 gas gauge complete all as specified and directed.

Supply & Fix in replacement of Multifunction meter complete all as specified and directed. Make : ASHIDA & Elmeasuere 3430 /R1S213428

Supply & Fix in replacement of Ammeter 0-100Amps suitable for CT operation 11KV complete all as specified and directed.

Voltmeter 0-15 KV suitavble for PT complete all as specified and directed.

M&L for detecting HT/ LT UG cable faults located in any stretch/ depth with sophisticated cable fault locator consisting of microprocessor based pre-locator system, HV surge generator, fault pin point surge wave reciever, cable indentification instrument , cable tracer for exact location of under ground cable routes. Note: The rate quoted deemed to be inclusive of rental charges for T&P like entire cable fault locating instrument, Charges for operator and transportation etc complete all as specified and directed.

S&F danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps,bolts, nuts of approved size for HT 25x20 cm size including dismantling old one complete all as specified and directed.

Supply and spread stone metal graded aggregate of size 40 mm at transformer yardcomplete all as specified and directed.

Clearing of bushes/small plants upto root level around and surroundings areas E/M installations (i.e.Two Pole/ Four structures, outdoor-substation yards, pump house & STP installations etc) including surface dressing n.exc 15 cm deep and removing debris to a distance n.exc 50m complete all as specified and directed.

Supply Lay HDPE sheet 300 micronin sub stns for laying of aggregate complete all as specified and directed.

Taking out old Unservicable ,Supply and fix cable jointing kit 11 KV cable for indoor termination heat shrink type joint complete joint material and accessories suitable for 3 core XLPE armoured AL conductor cable of size 50 to 95 Sqmm complete all as specified and directed.

Taking out old Unservicable ,Supply and fix cable jointing kit 11 KV cable for indoor termination heat shrink type joint complete joint material and accessories suitable for 3 core XLPE armoured AL conductor cable of size 120 to 185 Sqmm complete all as specified and directed.

Taking out old Unservicable ,Supply and fix cable jointing kit 11 KV cable for indoor termination heat shrink type joint complete joint material and accessories suitable for 3 core XLPE armoured AL conductor cable of size 240 to 300 Sqmm complete all as specified and directed.

All as per item No.51 here in above, but for Outdoor type termination heat shrink type joint suitable for 3 core XLPE armoured Aluminium conductor cable of size 95 sqmm complete all as specified and directed.

All as per item No.51 here in above, but for Outdoor type termination heat shrink type joint suitable for 3 core XLPE armoured Aluminium conductor cable of size 120 to 185 sqmm complete all as specified and directed.

All as per item No.51 here in above, but for Outdoor type termination heat shrink type joint suitable for 3 core XLPE armoured Aluminium conductor cable of size 240 to 300 sqmm complete all as specified and directed.

S&F in replacement of straight through joint kit (Heat shrinkable) suitable for XPLE underground aluminium conductor cable 11000 Volt grade of cross sectional area 120 Sqmm to 185 Sqmm x 3 Core including testing after jointing complete all as specified and directed.

All as per item No 55 here in above, but suitable for 3 core XLPE armoured Aluminium conductor cable of size 95 sqmm x 3 Core complete all as specified and directed.

Taking out old un serviceable HT cable of any size and type complete all as specified and directed.

Supply and laying HT XLPE insulated, screened PVC bedded, galvanized steel strip or wire armoured, electric power cable ( heavy duty ) with aluminium conductor 11000 volt grade, cross sectional area 185 Sqmm, 3 core conforming to IS-7098 (Part-I) laid in trenches / under floor / roads / along poles etc. all as specified and directed by Engineer-in-Charge. (Excavation & earth work, sand cushioning, cable protection, GI pipes, MS clamps, nut and bolts required for laying in trenches and fixing along poles shall be measured and paid separately). complete all as specified and directed.

Supply and laying HT XLPE insulated, screened PVC bedded, galvanized steel strip or wire armoured, electric power cable ( heavy duty ) with aluminium conductor 11000 volt grade, cross sectional area 95 Sqmm, 3 core conforming to IS-7098 (Part-I) laid in trenches / under floor / roads / along poles etc. all as specified and directed by Engineer-in-Charge. (Excavation & earth work, sand cushioning, cable protection, GI pipes, MS clamps, nut and bolts required for laying in trenches and fixing along poles shall be measured and paid separately). complete all as specified and directed.

Excavation in trenches in soft/loose soil not exceeding 1.5 m wide and not exceeding 1.5 m in depth for foundations laying of U/G cable etc. and getting out complete all as specified and directed.

Excavation in trenches in soft/loose not exc. 1.5m wide and not exc. 3.0 m in depth and getting out complete all as specified and directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick with soft/loose soil complete all as specified and directed.

Removing surplus spoil 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 directed.

Supply and laying sand cushioning to cables with a layer of sand 8 cm deep before laying the cable and 15 cm depth after laying of cable, complete all as specified and directed.

Protection to cable with one layer of PCC covers HVP Type-I size 300mm x 180mm x 40mm laid flat butting to each other in such a way that the length of the PCC cover is at right angle to the central axis of the cable , complete all as specified and directed.

M & L for G.I. tubing light grade of size 80mm bore for protection of cables to be laid under roads, crossings/culverts complete all as specified and directed.

Plain cement concrete 1:4:8 type D-2 using 40 mm graded stone aggregates, as in foundation of poles, and stay filling and mass concrete complete all as specified and directed.

Plain cement concrete 1:3:6 type C-1 using 20 mm graded stone aggregates, as copping of poles complete all as specified and as complete all as specified and directed.

Material and labour for boring of holes under road, pavement hard standing by trenchless technology using ultra sound technique and necessary machine including HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure complete all as specified and directed.

Taking down old unserviceable earth pit and M/L for earthing complete with galvanized steel earth plate electrode 600X600X6mm thick buried directly in ground (earth pit not less than 2.25m deep below normal ground level) with top edge of the plate not less than 1.5M below normal ground level connected to GI earth strip 32 x 6 mm dia by means of nuts, bolts, check nuts and washer of GI steel and connecting to testing point including provision of test point and all as shown in electrical plate No. 3 of SSR Pt I. The work is inclusive of necessary earth work and PCC chamber in RCC (1:2:4) Type B-1using 20mm crushed stone aggregate with 8 CTD bar reinforcement both ways at 140 mm centre to centre complete all as specified and directed. Note:- (i) GI earth lead beyond 7.5M shall be measured and paid separately. (ii) The rate include measuring earth resistance (iii)Weather coating paint will be done over chamber and inclusive in the above rate quoted .

Taking down old earth pit and M/L for earthing complete with Copper earth plate electrode 600 X 600 X 3. 15 mm thick buried directly in ground (earth pit not less than 2.25 m deep below normal ground level) with top edge of the plate not less than 1.5M below normal ground level connected to copper earth strip 20 x 3 mm thick by means of with brazing at joints all as shown in electrical plate No. 3 of SSR Pt I. The work is inclusive of necessary earth work and PCC chamber in type CI (1:2:4) with 8 CTD bar reinforcement both ways at 140 mm centre to centre complete all as specified and directed. Notes:- (i) copper strip beyond 7.5 M shall be measured and paid separately under relevant items of this schedule. (ii)Weather coating paint will be done over chamber and inclusive in the above rate quoted .

Taking down old M&L for Aluminium strip of size 25x3.15mm complete including cut to length and size to match the existing system and fixing the same to the wall / roof on/on pole with fixing materials complete all as specified and directed.

Taking down old M&L for Copper strip of size 25x3.15 mm complete including cut to length and size to match the existing system and fixing the same to the wall / roof on/on pole with fixing materials complete all as specified and directed.

M/s STAR ELECTRICALS (BID ID -3421840)

kamadhenu Electricals (BID ID -3422114)

M/S - KRUPA ELECTRICALS (BID ID -3418504)

devan enterprises (BID ID -3429351)

RAMSON TRADERS (BID ID -3429356)