REPAIR AND MAINTENANCE OF HT SWITCHGEAR AND RMU AND ALLIED WORKS IN TECH AREA AF STN JODHPUR

Amount

M&L for Repair and maintanance of 11 KV HT RMU indoor/outdoor type, EACH WAY of RMU 400/630/800 Amp rating from HT Panel after switching off electric supply. Removal of all the possible mechanical/electrical/control system for proper functioning e.g. spring charge system, triping system, indication system, including checking the quality of insulating material, complete & refixing with faulty part replaced blowing out dust and applying the proper lubrication/ greasing and reassembling the including motorised operation and connection to HT panel & before filling of gas leakage testing carried out (if quantity is lesser than required) and make the RMU functional to the entire satisfaction and as directed by the Engineer-in-charge. Notes :- (i) The RMUs are installed at Tech area and salawas, RMU are of different type of makes installed at site like Crompton Greaves, Alstom, Areva, Schneider,Siemens,C&S, etc. (ii) Spare parts if replaced & Gas if filled shall be measured and paid separately under respective items supply only .

Material & labour for Repair,Maitainance & Servicing of 11KV HT VCB indoor/outdoor type complete including the following (a) Taking out 11KV HT VCB of 400/630/800 Amp rating trolley from HT Panel after switching off electric supply. Removing all mechanical/electrical/control system for proper functioning e.g. spring charge system, triping system, remote operation, indication system, upward-downward/in-out movement of HT VCB trolley,etc including opening the VCB trolly & checking the quality of insulating material,vaccum system complete. Replace defective parts, fixed/ moving contacts and blowing out dust and applying the proper lubrication/ greasing with AP-3 grease and reassembling the VCB including connection to HT panel and make the VCB functional to the entire satisfaction of and as directed by the Engineer-in-charge. Notes :- (i) The VCBs are installed at Tech area and VCBs are of different type of makes installed at site like Crompton Greaves, Alstom, Areva, Schneider,Siemens,C&S, etc.

Material & labour for Repair and maintanance of relay set (O/C and E/F relays) of any make for 11KV VCB/RMU panel, removing and refixing (the contacts NO+NC should be cleaned by CTC solution and adjust if electromagnetic) with faulty part replaced and calibrate the relays by relay testing kit & proper setting as per reqd load & time delay and fixing the relay set in HT panels complete all as specified and directed by Engr-in-charge. Notes :- (i) Testing shall be carried out by primary and secondry injection kit. (ii) Spare parts shall be measured and paid separately under supply only. (iii) The tripping system should be in accordance with the incomer of the affected feeder and setting should be maintained such that fault does not carry beyond the particular feeder due to overload, 3 phase fault, earth fault etc. (iv) The VCBs/RMUs are installed at Tech area,salawas and VCBs are of different type of makes installed at site like Crompton Greaves, Alstom,Schneider, Ashida, Siemens,L&T, C&S or any other of relays available on the site.

Supply only SF6 gas suitable for HT33/11 KV RMU complete all as directed by Engr-in-charge.

Supply only trip/closing coil suitable for HT, VCB/RMU, operating on 24/110 volt system and testing complete all as directed by Engr-in-charge.

Supply only DC contactor operated on 110 / 24 volt system suitable for working of HT VCB/RMU complete all as directed by Engr-in-charge.

Supply only Motor cut off limit switch sutable for HT 11 KV VCB/RMU complete all as directed by Engr-in-charge.

Supply only Spring charging handle suitable of VCB/RMU charging as per sample all as specified and directed by Engr-in-charge.

Supply only TNC switch with wiring suitable for 11 KV VCB complete all as directed by Engr-in-charge.

Supply only indication lamp (LED type) Red or Yellow or Green colour suitable for 110 volts AC / 110 volt DC / 30 volts DC (as required at site) complete all as specified and directed by Engr-in-charge.

Supply only Auxiliary switch 6/5 NO/6/5NC complete all as directed by Engr-in-charge.

Supply only CTC solution bottle for servicing of RMU/VCB .

Supply only Push Button element with one NO / NC .

Supply only space heater suitable for RMU/VCB

Supply only angle boot for insulation of cable end termination and bushing of RMU suitaqble for 11000 Volts

Supply only thermostat for sensing and controling the temp.

Supply only monometer for monitoring the pressure of SF6 gas in the RMU .

Supply only spring charging motor suitable for operating RMU spring charging Mechanism 24 Volts

Supply only PT fuse for RMU 11 KV .

Supply only PT fuses for VCB 11 KV .

Supply only fuse box for connections of control wiring of VCBs/RMUs .

Supply only Charging Battary 3.8 volt for relay of RMU /VCB

Supply, install and testing in replacement dual core Resin cast ring core protection CT plate mounted type : 100/50/1 A, 5P10, 2.5 VA suitable for RMU including necessary wiring for protection and metering.

Supply, install and testing in replacement dual core Resin cast ring core protection CT plate mounted type : 150/75/1 A, 5P10, 2.5 VA suitable for RMU including necessary wiring for protection and metering.

Supply,install testing in replacement of Potential transformer suitable for RMU 11000/110Volts with PT fuse and suitable wiring .

Supply, installation, testing and calibration of self powered relay 24V of Microprocessor based three phase relay system two overcurrent, one earth fault protection type for 11 KV breaker, setting range suitable for over current and earth fault with necessary wiring/fitting including dismantling of old IDMT or unserviceable relays.The setting of the relay should be in accordance with the incomer and setting should be maintained such that fault does not carry beyond the affected feeder in case of Overload,3 phase fault, earth fault etc complete all as specified and directed by the Engineer-in-Charge. Note :- The calibration of relay of Microprocessor based three phase relay system required to carried out atTech area . (ii) The calibration of relay of Microprocessor based three phase relay system to be carried out by OEM representative.

Supply, installation, testing and calibration of auxilary supply relay 24V/110V of Microprocessor based three phase relay system two overcurrent, one earth fault protection type for 11 KV breaker, setting range suitable for over current and earth fault with necessary wiring/fitting including dismantling of old IDMT or unserviceable relays.The setting of the relay should be in accordance with the incomer and setting should be maintained such that fault does not carry beyond the affected feeder in case of Overload,3 phase fault, earth fault etc complete all as specified and directed by the Engineer-in-Charge. Note :- The calibration of relay of Microprocessor based three phase relay system required to carried out atTech area . (ii) The calibration of relay of Microprocessor based three phase relay system to be carried out by OEM representative.

Supply and fix in repair multifunction meter with digital display suitabale for measuring 11 KV electrical parameters( Voltage, Amp, power factor, frequcncy. Kwh, harmonics upto 31 level) complete all as specified and directed

S&F in replacement & testing of spring charging mechanism assembly with motor, gear box self triping coil etc complete for outdoor/indoor type, 11KV,RMU,operated on 110/24 volts DC,with charging time less than 15 sec with compelte breaker drum assembly of approved rating complete all as specified and directed by Engineer-in-Charge.

S&F in replacement & testing of load break switch operating mechanism / spring charging mechanism assembly gear box self triping coil etc complete for outdoor/indoor type, 11KV,RMU,operated on 110/24 volts DC or 230 volts AC , compelte breaker drum assembly of approved rating complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of Power Pack for 11 KV VCB/RMU suitable for incoming supply 220/110 volts and output 110/24 volts DC supply all as per existing with wiring complete all as directed by Engr-in-Charge. Note : - The contractor has to visit the site to check the existing system of 11 KV VCB/RMU for installation of power pack unit.

M&L in repair for earthing complete with GI earth plate electrode 60cmx60cmx6mm thick, 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 1.5m below normal ground level, connected to and including GI earth strip 32*6 mm by means of bolts, nuts, check nuts and washers of galvanized iron or steel all as shown in electrical plate No 3 of SSR Part-I connected to earthing test point all as specified or indicated including testing on completion and excavation and earth work in any type of soil, PCC 1:3:6 type C1 in chamber, precast RCC cover 50mm thick in cement concrete 1:2:4 type B1, reinforced with welded steel wire fabric or XPM (Weight not less than 4 Kg/Sqm) with cast iron frame, funnel with wire mesh, 20mm bore GI pipe medium grade watering pipe, lugs, 40mm bore GI pipe medium grade protection pipe upto 7.5m as directed.

Supply and fix in repair cable joint kit for 11 KV grade cable for indoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 95 sqmm complete all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair cable joint kit for 11 KV grade cable for indoor termination Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size from 120 to 185 sqmm complete all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair Cable joining kit for 11 KV (Earthed) grade cable for straight through Heat shrink type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete including digging if required all as specified and directed by the Engineer - in - Charge.

Supply and fix in repair Cable joining kit for 11 KV (Earthed) grade cable for straight through Heat shrink type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120sqmm to 185 sqmm complete including digging if required all as specified and directed by the Engineer - in - Charge.

M&L of checking of HT 11/33KV cable of any size by means of HT Cable Fault Locator Machine by requisition for removal of HT cable faults complete all as specified and directed

Nvimal Engineers and Contractor

M/s R K Enterprises

Shri Electrical Enterprises