COMPREHENSIVE MAINTENANCE OF EXTERNALELECTRIC SUPPLY (HT AND LT) INCLUDING ALL HT EQUIPMET AT PIER 2 AND PIER 5 UNDER GE(SB) KARWAR

Amount

Taking down HT switch gear (Vacuum circuit breaker ) of capacity 11 KV 250/350 MVA , up to 630 Amps comprising of following repairs, servicing, carrying out preventive maintenance and refixing the same after repairs/ servicing. : - Make- Schneider

(a) Tripping off the breaker, lowering the breaker with raising/lowering handle and pulling out the breaker complete from the panel along with the trolley for servicing/inspection/overhauling

(b) Servicing/Inspecting/checking of automatic safety shutter operation for serviceability and replacement of spares if required.

(b) Servicing/Inspecting/checking of circuit spout and circuit spout connections for RYB phases and replacement of spares if required.

(c) Dismantling and checking of cross bar assembly, fixed contacts and current carrying parts of the breaker, trolley, insulated assembly and checking lamination with clamps, epoxy spout, isolator assembly etc.

(d) Setting, reassembling, cleaning, adjustment of fixed contacts, main contact, arcing contacts and chamber baffle pot assembly, moving contact for proper setting of auxiliary contacts operating mechanism.

(e) Servicing/Inspecting/checking of secondary sockets/busbar earthing plugs/earthing sockets and replacement of spares if required.

(f) Checking, setting and adjustment of lowering and raising operation of the breaker trolley.

(g) Lubrication and greasing of all moving parts of the trolley, stopper bolt for proper operating and closing of shutter gear, isolation resistance of trolley of with vacuum interrupter assembly.

(h) The inspection of HT switch gear shall involve:- (i) Inspection of truck & hoist assembly. (ii) Inspection of assembly & components of solenoid assembly. (iii) Inspection of assembly & components of dependent mechanism. (iv) Inspection of assembly & components of spring box mechanism. (v) Inspection of motor mechanism spring charge assembly (vi) Inspection of assembly of trip unit & related components, Make: ABB VCB Indoor type

Notes: (i) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound, to put in to the VCBs and panels in serviceable condition, testing and commissioning all as specified and as directed by the Engineer-in-Charge. (ii) Major spares like Breaker bushings, vacuum interrupter, busbar spout, busbar spout connections, circuit spout/circuit spout connections/buffer fixed contacts, moving contacts, solenoid spares, dependent/spring mechanism/ motor mechanism, trip unit etc will be measured and paid separately under relevant items of Schedule 'A'. However the rate quoted shall be deemed to include for any other minor spares require replacement.

Supply only the following spares suitable for 11 KV 250/350 MVA , up to 630 Amps HT switch gear VCBs and 11 KV HT panel repair work under relevant Schedule - Make- Schneider

(a) Torsion spring suitable for 11KV VCB

(b) Motor cut off switch suitable suitable for 11KV VCB

(c) Charging motor suitable for 11KV VCB

(d) LED Indication Lamps

(e) Shunt trip coil 110 V DC/220 V DC

(f) Shunt trip coil 110 V DC/220 V DC with assembly

(g) Breaker control switch

(h) Busbar Spout

(j) Circuit spout

(k) Control circuit fuses 2 A to 63 A

(l) HRC fuse (PT HT side)

(m) PT plug contact

(o) VCB buffers

(p) 110 Volt DC closing coil assembly

(q) Push to trip knob red assembly

(r) Push to trip knob green assembly

(s) Ratchet wheel

(t) Nylon release lever

(u) VCB charging powl

(v) Shutters for racking shaft

(w) Bus bar support insulator for VCB panel

(x) Vacuum interrupter

(y) Monoblock for busbar spout/circuit spout

(z) Spring drum suitable for 11KV VCB

(aa) Spring suitable for 11KV VCB

(ab) Roller chain suitable for 11KV VCB

Material and labour for Strip Opening the busbar of the 10 Nos HT 11 KV VCB panels section for decarbonising of busbar and connected items/removing the old teared/ unsv insulation from the bus bar, checking the IR value before fixing the HT sleeve and refixing the heat shrinkable insulating tape and sleeve suitable for 11 kv busbar not less than 3mm thick having dielectric strength not less than 15kv/mm and HT insulation tape for CT/ PT connection complete and checking the IR value before testing and commissioning the bus bar all as specified . Note :- Test sheet of IR value shall be submitted by the contractor, no cost extra shall be paid by the department and all testing requirement shall be arrange by the contractor including transportation and T&P.

Supply and fix in replacement & testing and commissioning of CTs epoxy cast wound primary with minimum primary current 50 to 630 A, single/ double ratio, double core (Protection core-5P10 & Metering core- Class 1.0), 25 KA for 1 sec of 15 VA minimum Burden including necessary fixing arrangement to match with the existing system complete all as directed Make - as per OEM HT panel manufacturers..

Supply & Fixing in replacement & testing and commissioning of potential transformer PT ratio 11000/110 Volts accuracy class 0.5, 50VA , indoor type , epoxy resin cast, strut type single stage suitable for power measurement, connecting to HT/VCB to match with the existing system complete all as directed Make - as per OEM HT panel manufacturers.

Supply & laying 1.5 sqmm flexible PVC stranded copper conductor cable, unsheathed, 1100 V grade for control wiring.

Supply & laying 2.5 sqmm flexible PVC stranded copper conductor cable, unsheathed, 1100 V grade for control wiring.

S& Fixing in replacement multifunction meter, Digital type (Displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, KVARh etc.) Class 1/0.5 with RS485 port for communication in Modbus protocol.

S& Fixing in replacement of space heater with thermostat and new connected separate control with wiring

Supply , installation, testing & commissioning of multifunction protection Relay consisting of protection against – Directional Over current Element (67) Instantaneous Over-current Element Delayed Over current Element Controlled Over current Protection Derived Directional Earth Fault Element Derived Instantaneous Earth Fault Element Derived Time Delayed Earth Fault Protection Measured Directional Earth Fault Protection Measured Instantaneous Earth-fault Element Measured Time Delayed Earth Fault Element (51G) SEF Directional Element (67SEF) SEF Instantaneous Element..SEF Time Delayed Element (51SEF).High Impedance REF (64H) Cold Load Settings (51c)Negative Phase Sequence Over current (46NPS).Undercurrent Detector (37, 37G & 37SEF) .Undercurrent Guarded Detector (37).Thermal Overload Protection (49S). Arc Flash Detector (50 AFD) .Under/Over Voltage Elements (27/59) . NPS Overvoltage Protection (47)Neutral Overvoltage Element. Under/Over Frequency Detector (81) Typical Sequence with 3 Instantaneous and 1 Delayed trip Basic Auto-Reclose Sequence Voltage Detector Operation Sync Function Voltage Detector Operation. Circuit Breaker Status Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off).Circuit Breaker Fail Protection (50BF).VT Supervision Function (60VTS).CT Supervision Function (60CTS-I) Logic Diagram: CT Supervision Function (60CTS)Broken Conductor Function (46BC) Trip Circuit Supervision Feature (74TCS) Close Circuit Supervision Feature (74CCS).Harmonic Block Feature (81HBL2)Load Blinder Three-Phase Load Blinder Single-Phase Load Blinder and Angle Over current Relay testing by secondary injection test kit Set relay setting as per load with all specification Make : Schneider

Servicing,Inspecting,checking,cleaning by using of blower, Lubrication ,greasing and carrying out preventive maintenance of RMU capacity 11 KV, 250/350 MVA consist of 3 Nos breakers and RMU in serviceable condition, testing all as specified and as directed by the Engineer-in-Charge. Make-Schneider

Notes: (i) The rate quoted shall be deemed to include for necessary T&P, nuts, bolts, washers, gasket, insulation tape, compound etc.

Supply and fix in replacement of old U/S Danger notice plate of 1.6 mm thick mild steel sheet vitreous enameled white, with letters, figures & conventional skull & bones in signal red colour and fixed with MS clamps, bolts and nuts of approved size, for HT 25x20 cm size all as specified & as directed.

Material and labour for servicing of load break switch suitable for 11KV HT by dismantling the existing cable connections with the LBS/ HT isolator and repairing the on/off operating lever along with spring mechanism for charging/discharging of the breaker, cleaning of all the HT contacts with the anti corrosive liquid spay, repairing the alignment of the contacts all as specified and directed, all as specified and directed by Engr-In-Charge. Note: a) All the minor parts required for the repair of the LBS are included in the above rate

Supplying and laying in repairs synthetic Rubber insulated mats 2.5 mm thick for voltage up to 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m. complete all as specified and as directed.

Supplying & laying in repair including testing of XLPE insulated, armoured, heavy duty, HT UG electric cable in trenches/wall/cable tray/saddling/GI pipe or specified as per site requirement with stranded aluminum conductor 11 KV grade of size 3 core 300 Sqmm.

Supply, jointing & testing Indoor end termination cable joininting kit, heat shrinkable type 11 KV HT joint kit suitable for PVC / XLPE insulated stranded aluminium conductor of size 3 core 240 sqmm to 300 Sqmm all as specified and as directed.

Supply, jointing & testing straight through type cable joininting kit heat shrinkable 11 KV HT joint kit suitable for 3 core 240 Sqmm to 400 Sqmm PVC / XLPE insulated stranded aluminium conductor all as specified and as directed.

Taking down carefully old unserviceable UG cable of any size from the trenches/wall/pole and keeping aside for reuse and remove the unserviceable cable from site after affording credit depending on its serviceability state including removal of brick/PCC cable cover complete all as specified and directed.

Supply and Laying LT UG cable 1100 Volts grade XLPE insulated PVC sheathed amoured, heavy duty, in trenches/walls/poles/passing through pipes with multistranded aluminium conductor including lugs/thimble/ferules connection, testing and commissioning complete including taking out old unserviceable cable for 25 sqmm 4 core. Note: [i] Earth work, excavation sand cushioning, bricks for protection, GI pipe etc shall be measured separately under relevant items of this schedule Note: [iI] Old retrieved LT cable found in serviceable condition from taking out shall be re-use/relay in the work

All as per Item No. 25 above but for 35 sqmm 3.5 core

All as per Item No.25 above but for 50 Sqmm 3.50 core

All as per Item No.25 above but for 70 sqmm 3.50 core

All as per Item No.25 above but for 95 sqmm 3.50 core

All as per Item No.25 above but for 120 sqmm 3.50 core

All as per Item No.25 above but for 185 sqmm 3.50 core

All as per Item No.25 above but for 240 sqmm 3.50 core

All as per Item No.25 above but for 300 sqmm 3.50 core

Supply only the following items :- Volt meter digital type 0-500 Volts

Ammeter digital type suitable to 0 - 100 Amps

Aluminum lugs suitable for 25 sqmm to 50 sqmm cables

Aluminum lugs suitable for 70 sqmm to 150 sqmm cables

Aluminum lugs suitable for 150 to 300 sqmm cables

Sheared rubber gasket suitable to LT panel board any description

Indicator lamp LED type 'RYB'

M/L for MCCB 3 pole, 415 volts ,25 to100 Amps with breaking capacity 16 KA,with thermal magnetic release, with adjustable setting 80% to 100%, Ics=100% ICU, fixing to the existing panel board matching with the existing slots, including any alteration required and with extention links properly connected to the busbar, including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferrules etc. after taking out the existing unserviceable and making good the disturbed surface for following capacity.

All as per Item No.42 herein above but for 125 Amps with breaking capacity 16 KA

All as per Item No.42 herein above but for 160 Amps with breaking capacity 25 KA

All as per Item No.42 herein above but for 200 Amps with breaking capacity 25 KA

All as per Item No.42 herein above but for 250 Amps with breaking capacity 36 KA

All as per Item No.42 herein above but for 400 Amps with breaking capacity 36 KA

All as per Item No.42 herein above but for 630 Amps with breaking capacity 50 KA

M/L for MCCB 4 pole, 415 volts ,100 Amps with breaking capacity 16 KA,with thermal magnetic release, with adjustable setting 80% to 100%, Ics=100% ICU, fixing to the existing panel board matching with the existing slots, including any alteration required and with extention links properly connected to the busbar, including disconnecting the incoming/outgoing cable connections and re-connecting with suitable aluminum lugs/ferrules etc. after taking out the existing unserviceable and making good the disturbed surface for following capacity.

All as per Item No.49 herein above but for 125 Amps with breaking capacity 16 KA

All as per Item No.49 herein above but for 160 Amps with breaking capacity 25 KA

All as per Item No.49 herein above but for 200 Amps with breaking capacity 25 KA

All as per Item No.49 herein above but for 250 Amps with breaking capacity 36 KA

All as per Item No.49 herein above but for 400 Amps with breaking capacity 36 KA

All as per Item No.49 herein above but for 630 Amps with breaking capacity 50 KA

Servicing of Automatic Power Factor Correction (APFC) panel of the Capacity up to 600 KVAR complete comprising any type capacitors, APFC relay, MCCB, Cooling Fan, Voltmeter, Ammeter, CTs with all other connected accessories, checking of serviceability of each component, cleaning all contact points, tightening of all connections including replacement of unserviceable components, thimbles, nut bolt and washers, etc if necessary, cleaning the entire panel by using hot blower complete all as directed by Engineer-in-Charge.

Servicing,Inspecting,checking,cleaning by using of blower, Lubrication ,greasing and carrying out preventive maintenance of ACB up to 2000 Amps with all other connected accessories, checking of serviceability of each component, cleaning all contact points, tightening of all connections including replacement of unserviceable components, thimbles, nut bolt and washers, etc if necessary and ACB in serviceable condition, testing all as specified and as directed by the Engineer-in-Charge.

Material and labour for Maintenance and attending complaints / breakdowns at PIER 5,Tunnel and co point comprising of HT/LT panels, Bus bar trunking/ underground LT cables up to co point, including repairs of day to day maintenance for smooth & trouble free power supply to PIER 5 as directed by Engr-In-charge.

Material and labour for Maintenance and attending complaints / breakdowns at PIER 2,Tunnel and co point comprising of HT/LT panels, Bus bar trunking/ underground LT cables up to co point, including repairs of day to day maintenance for smooth & trouble free power supply to PIER 2 as directed by Engr-In-charge.

Note :- The rate quoted is inclusive for the following :-

(i) (a) Attending minor repairs/breakdowns without involving any new (major) materials. (b) Cost includes the tools for attending break down and minor materials like lugs and PVC tapes, Job Cards and Complaint registers etc. (c) Major repairs, Break downs involving Supply and fix of materials such as cables,Joints,MCCBs etc are out side the scope of this item and shall be measured and paid separately.

(ii) Contractor should ensure to carry out the work through qualified Technician/Electrician and assisted by the helper. Necessary tools & plants and transportation charges are deemed to be included in the unit rate quoted. (iii) On completion of the task/attending break down necessary Job card duly signed by the stake holder.

Shree Ayyappa Engineering (BID ID -3508664)

sapana enterprises (BID ID -3508703)

shakti engineering and electrical works (BID ID -3508499)

Darpan Construction (BID ID -3508657)

pk Enterprises (BID ID -3508724)

Pioneer Enterprises (BID ID -3508565)