REPAIR AND MAINT TO RMUS, VCBS AND CONNECTED ITEMS AT NIWARU MIL STN UNDER AGE I NIWARU

Amount

Material and labour for routine preventive / breakdown maintenance & repairing of 11KV to 33 KV rating (Drawout / non drawout trolly type) Vacuum Circuit Breaker (VCB) / RMU doing the follwing work :- (i) Taking out VCB trooly from panel and carry out the cleaning dust / durt / any type of spark, general maintenance, oiling, greasing the mechanical / electrical parts such as spring charging motor mechanism, gears, lever spring, operating rod, male & female electric contacts ( Jaw contact assembly), bus bar shutter, tightening of nuts and bolts, cleaning any type of arc/ burning patch (ii) Repairing / Checking the AC/DC wiring, circuit including control fuses, CT & PT fuse and circuit jack, on/off push button, all type of commanding electric tripping / closing coils, all type of IDMT numerical / degital / analog relays, indicating lamp, voltmeter, ammeter, PF meter, gear box mechanism and springs etc., (iii) Relacement and testing of defective / unservisible electrical / mechanical parts. (iv) Reinserting the VCB in panel and setting of all types of relays as per load (v) Doing all type of standered tests and calibration of different type of relays such as Over current & earth fault relay, Trip circuit supervision relay, Master trip relay, Fuse failure relay, .Digital multifunction relay, Auxilary relay for Buch, WTI, OTI trip & alarm, Auxilary relay for PRV trip & MOG Alarm by injucting artificial electric load in the form of overload, short circuit current , and earth fault for tripping function & testing of all relays complete in all respect all as specified and submetting testing report as directed by Engineer-in-Charge.

Notes :- (i) Unserviceable items required to be replaced shall be measured and paid separately. (ii) Minor parts such as oil, grease, rust/ carbon cleaner, Nut/ bolts, wires is included in the unit rate quoted above. (iii) Unit rate quoted against this item shall include the engineer, electrian & labour required for repair / replacement of unserviceable spare parts. (iv) The above work shall be carried out only and only by the OEM of CG ( Crompton Greaves ) Engineer, Electrian. No local / any other ageny, Company Engineer / Crompton greves dealer will be allowed to carryout the work. Engineer will come directy from OEM CG ( Crompton Greavs) company. Contractor will submit the evidance in this regard and will take permission before starting the work. (v) All the mechanical, electrical parts / relays / coils to be replace will be of same make and type as per existing installed on site. (vi) The contractor shall check the existing system of VCBs for maintenance of VCB parts before quoting the tender. (vii) The maintenace of VCB once measured will not be paid again in this contract if any other type of fault come after the servicing. Only spare parts will be paid. No any other type of labour/ Electrian / Engineer cost will be paid saperatly (viii) As the VCB is a critical equipment from the safety point of view for the electric supply system. If any fault comes in the VCBs the contractor will have to attend and rectify the same with in 48 Hrs .Failing to attend the fault within given time a panelty will be imposed @ 500 / day till the rectification of fault.

Supply and fix in replacement, making connection and testing of numerical based Overcurrent and earth fault protection relay of make Schneider electric / Alstom, model No:- MiCOM P127 having 08 Nos LED indicator for showing different type of signals, operating on VX 24-250 Vdc 48-240 Vac, Protection type:- Overcurrent ANSI code: 50/51, Recloser ANSI code: 79, Cold load pick-up Earth fault ANSI code: 50G/51G, Lockout ANSI code: 86, Negative sequence overvoltage ANSI code: 47, Under voltage ANSI code: 27, Overvoltage ANSI code: 59, Rate of change of frequency ANSI code: 81R, Neutral voltage displacement ANSI code: 59N, Thermal overload protection ANSI code: 49RMS, Under frequency ANSI code: 81L, Phase undercurrent ANSI code: 37, Breaker failure ANSI code: 50BF, Negative sequence overcurrent ANSI code: 46, Restricted earth fault ANSI code: 64REF, Directional earth fault ANSI code: 67N, Directional phase overcurrent ANSI code: 67, Over frequency ANSI code: 81O,

Voltage-restrained overcurrent ANSI code: 50V/51V, Number of inputs:- 4 - current input CT...X/5 A and X/1 A, 3 voltage, 12 discre, Number of outputs:- 9 discrete, Communication port protocol :-DNP3, IEC 60870-5-103, Modbus RTU, Control and monitoring type:- Circuit breaker/contactor control, Network and machine diagnosis type:- Fault recording, Event recording, Disturbance recording15 s, Switchgear diagnosis type:- CT/VT supervision Trip circuit supervision ANSI code: TCS, Display type:- Backlit LCD: 2 lines of 16 characters, Discrete input voltage:- 24...250 VDC 19.2 V standard variant, 48...250 VAC 19.2 V standard variant, Communication port support :-RS232 RS485, Type of measurement:-Current, Height 177 mm total: 156 mm embedded:, Width 155 mm, Depth 249.6 mm total: 223 mm embedded, Device mounting Flush all as directed and specified by Engineer-in-Charge. Note:- In case the relay discontinued by company than contracor will fix / replacement equivalent relay recommended by alstrom company having same specification as per existing installed.

Supply and fix in replacement, making connection and testing of IDMT numerical based Overcurrent and earth fault protection relay of make CG model No CGI 14S comprises integrated communication protocols for SCADA compliance, 8-button keypad & a 16×2 LCD display that provides an easy user interface, CGI 14S 230VAC complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement Electro mechanical based fuse failure relay, 3 pole , Vx 110 AC 50 Hz, type VAPM31AF of Make Alstom all as per existing installed and as directed and specified by Engineer-in-Charge.

Supply and fix in replacement Electro mechanical based Triping relay, Vx 24-27 V, DC, type VAJH13YF of Make Alstom all as per existing installed & directed and as specified by Engineer-in-Charge.

Supply and fix in replacement Electro mechanical based Trip circuit supervision relay, 3 pole, Vx 24-27 V, DC, type VAX31ZG of Make Alstoma as per existing installed and as directed and specified by Engineer-in-Charge.

Supply and fix in replacement Electro mechanical based Auxiliary relay, 3 pole , Vx1 110-125 V, AC type VAA33ZG of Make Alstom all as per existing installed directed and as specified by Engineer-in-Charge.

Supply and fix in replacement Tripping coil along with solenoid operating on 24 V DC, R 1.7Ω +-5% as per existing installed on site in 11 KV rating VCB.

Supply and fix in replacement closing coil along with solenoid operating on 24 V DC, R 1.7 Ω +-5% as per existing installed on site in 11 KV rating VCB.

Supply and fix in replacement Tripping coil along with solenoid operating on 24 V DC, R20 3.0 Ω +-5% as per existing installed on site in 33 KV rating VCB.

Supply and fix in replacement Closing coil along with solenoid operating on 24 V DC, R20 3.0 Ω +-5% as per existing installed on site in 33 KV rating VCB.

Supply and fix in replacement Spring charging motor operating on 220 V AC / DC supply, FL Watts 150, type PMR 5 of make DELCO as per existing installed on site in 11 KV rating VCB.

Supply and fix in replacement Spring charging motor operating on 230 V AC/DC, type C36, O/P 0.1KW of Make:- KPT shirol, as per existing installed on site in 33 KV rating VCB.

Supply and fix in replacement high voltage Porcelain material H.R.C CT / PT ( Current transformenr / Potential transformer) fuse 11 KV rating 1 Apms- of make Bussmann of suitable length and diameter to be install in 11 KV rating VCB.

Supply and fix in replacement high voltage Porcelain material H.R.C CT / PT ( Current transformenr / Potential transformer) fuse 33 KV rating 3.15 Apms of make Bussmann of suitable length and diameter to be install in 33 KV rating VCB.

Supply and fix in replacement DC power pack of capacity 7AH, 220 / 110 V AC incoming and 24V-30 V DC outgoing all as per existing installed in 11 KV VCB

Supply and fix in replacement rechargable battery of capacity 7 AH , 12 V / 24 V /30 V all as per existing installed in DC power pack of 11KV VCB.

Supply and fix in replacement Breaker control Switch Three position :-Trip, close and neutral control switch (TNC) for operation of 11KV / 33 KV VCB all as per existing installed on site.

Supply and fix in replacement three phase, 4 digit Digital type ammeter meter having indicators for each phase, accuracy class 0.5, to be install in 11KV VCB as per existing installed specification. Make:- Elmeasure / ABB / L&T

Supply and fix in replacement three phase, 4 digit Digital type voltmeter meter having indicators for each phase, accuracy class 0.5, to be install in 11KV VCB as per existing installed specification. Make:- Elmeasure / ABB / L&T

Supply and fix in replacement HRC fuse link type NSD type FA 02 Amps to 20 Amps, 500 V.

Supply and fix in replacement LED pilot lamp Indicator working on AC/ DC power supply on any voltage to be install in 11 KV VCB in any colour as per requirement on site & as per existing installed on site.

Supply and fix in replacement Ammeter / Voltmeter Switch, four position :R ,Y, B and off position slelection for operation in 11KV / 33 KV VCB all as per existing installed on site.

Supply and fix in replacement push button NO / NO type all as per existing installed on site and directed and specifiec by Engineer-in-Charge.

Supply and fix in replacement Bridge Rectifier Diode all as per installed in 11 KV VCB all as per specified and directed by Engineer-in-Charge.

Supply and fix in replacement Epoxy support Insulator 40mm dia, 11KV, single holes of 12mm dia type, 150mm long as per existing make & model. specified and directed by Engineer-in-Charge.

Supply and fix in replacement Epoxy support Insulator 100mm dia, 33KV, 4 holes of 16mm dia type, 300mm long as per existing make & model specified and directed by Engineer-in-Charge.

Supply and fix in replacement CT ( current teansformer) type BWP3, STC 18.4 KA for 1 sec, core 1 :15VA class 0.5, core 2 : 15VA class 5P10 of make CG ( Crompton greaves) , copper wound, P1/P2 type of ratio 100-50/5-5A, 50 Hz as per IS-2705/1992, Ins. Class B, suitable for 11 KV VCB Panelas per existing and directed and specified by Engineer-in-Charge.

Supply and fix in replacement CT ( current treansformer) copper wound, P1/P2 type of ratio 100-50/5+5A, 50 HZ as per IS 2705-1992,CT frame HF-CT-401, Ins. Class B, HSV/IL : 36/70/170KVp, 50 Hz, Str-25 KA / 1 Sec, VA/class for core 1 - 15 VA /class 1.0 and for core 2 - 15 VA /class 5P10 make : CG ( Crompton greaves) suitable for 33 KV VCB as per existing make and model or as directed by EIC.

Supply and fix in replacement PT ( Potential transformer) suitable for 11 KV VCB Panel, copper wound, P1/P2 type of ratio 11000/110 Volt as per IS 2705-1992, Ins. Class B, 50 Hz, Str-25 KA / 1 Sec, as per existing make and model or as directed by EIC.

Supply and fix in replacement PT ( Potential transformer) suitable for 33 KV VCB Panel, copper wound, P1/P2 type of ratio 33000/110 Volt as per IS 2705-1992, Ins. Class B, 50 Hz, Str-25 KA / 1 Sec, as per existing make and model or as directed by EIC.

Supply and fix in replacement LV plug connector suitavle for 11 KV VCB controlling all as per existing and specified and directed by Engineer-in-Charge.

Supply and fix in replacement Male & female Jaw contact set of rating 11 KV, 800 Amps to be install in 11KV VCB all as per existing installed and specified and directed by Engineer-in-Charge.

Supply and fix in replacement HT vaccum interrupted assembly bottel with flex connection suitable for 11 KV VCB 800 Amps capacity for RYB phases as per installed complete all as specified and as directed by Engineer-in-Charge.

Supply and fix in replacement HT vaccum interrupted assembly bottel with flex connection suitable for 33 KV VCB 1250 Amps capacity for RYB phases as per installed complete all as specified and as directed by Engineer-in-Charge.

Supply, laying and commissioning XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor 11000 Volts, 240 Sq mm, 3 core cable grade IS-7098 marked, suitable for HT 11 KV (E) System laid in trenches/ ducts/ encased in GI pipe/ fixed to poles including jointing & testing in repair, complete all as specified and directed. (Note:- Old cable is under hadrstanding hence complete length shall not be available under schedule of credit.)

Supply, laying and commissioning XLPE insulated screened, PVC bedded galvanised steel strip or wire armoured electric power cables (heavy duty) with aluminium conductor 11000 Volts, 95 Sq mm, 3 core cable grade IS-7098 marked, suitable for HT 11 KV (E) System laid in trenches/ ducts/ encased in GI pipe/ fixed to poles including jointing & testing in repair, complete all as specified and directed. (Note:- Old cable is under hadrstanding hence complete length shall not be available under schedule of credit.)

Supply and fix cable end jointing kit for 11 KV grade cable for Outdoor termination, Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 240 to 300 sqmm complete all as specified.

Supply and fix cable end jointing kit for 33 KV grade cable for outdoor termination, Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 240 to 300 sqmm complete all as specified.

Schedule of Credit

SHREE BHAGWATI ENTERPRISES (BID ID -3175505)

M/S Anil Enterprises (BID ID -3175529)