PREVENTIVE MAINTENANCE TO EXTERNAL ELECTRIFICATION SYSTEM AND CONNECTED WORKS OF E M NATURE AT BAMRAULI

Amount

Excavating in trenches (soft/loose/dense soil), n.exc. 1.5metre wide and n.exc. 1.5metre deep and getting out complete.

Returning filling in foundation/trenches including spreading leveling, watering and well ramming in layers not exceeding 25cm thick in soil complete.

Removal of surplus excavated material to a distance n.exc. 50 metre and depositing where directed at a level n.exc. 1.5 metre above starting point complete.

Supply and spreading clean and dry screened sand (unwashed) in trenches around the cable for cushioning all as specified & directed

Supplying and laying un-reinforced precast concrete cable cover, class HVP,type 2 with peak, size 450mm x 180mm x 40mm complete all as specified and as directed.

Supply, laying & testing cross linked polyethylene insulated (XLPE) galvanised steel strip armoured cable with aluminum conductor, 11 KV `E’, of cross sectional area 95 Sqmm, three core (IS-7098) in trenches/through pipes/ducts or on poles at crossing of OH lines of MES and road crossing including taking out of old Cable , :- Note :- (i) Excavation, earthwork, cable protection cover, cable joint, sand cushioning shall be measured and paid for separately under respective item of this schedule. (ii) Old cable, cable joint, brick cover, pipe etc shall be contractor property and necessary amount as per schedule of credit shall be deducted from contractor's due payments.

Supply, laying & testing cross linked polyethylene insulated (XLPE) galvanised steel strip armoured cable with aluminum conductor, 11 KV `E’, of cross sectional area 120 Sqmm, three core (IS-7098) in trenches/through pipes/ducts or on poles at crossing of OH lines of MES and road crossing including taking out of old Cable , :- Note :- (i) Excavation, earthwork, cable protection cover, cable joint, sand cushioning shall be measured and paid for separately under respective item of this schedule. (ii) Old cable, cable joint, brick cover, pipe etc shall be contractor property and necessary amount as per schedule of credit shall be deducted from contractor's due payments.

Supply, laying & testing cross linked polyethylene insulated (XLPE) galvanised steel strip armoured cable with aluminum conductor, 11 KV `E’, of cross sectional area 185 Sqmm, three core (IS-7098) in trenches/through pipes/ducts or on poles at crossing of OH lines of MES and road crossing including taking out of old Cable , :- Note :- (i) Excavation, earthwork, cable protection cover, cable joint, sand cushioning shall be measured and paid for separately under respective item of this schedule. (ii) Old cable, cable joint, brick cover, pipe etc shall be contractor property and necessary amount as per schedule of credit shall be deducted from contractor's due payments.

Supply & fixing GI pipe 80mm dia bore, light grade, including all fittings laid in trenches/ fixed to wall, poles/roof etc for cable protection including sealing end complete all as specified and directed. Note:- Clamp for fixing pipe on poles shall be included in quoted rate.

Supply & fixing GI pipe 100mm dia bore, light grade, including all fittings laid in trenches/ fixed to wall, poles/roof etc for cable protection including sealing end complete all as specified and directed. Note:- Clamp for fixing pipe on poles shall be included in quoted rate.

Earthing complete with galvanised mild steel earth electrode plate 600 X 600 X 6 mm thick buried directly and vertically in ground to a depth not less than 2.25 metres below ground level with top edge of plate not less than 1.5 metres below normal grond level and connected to galvanised iron earth strip 32x6mm size by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical Plate No 3 of MES SSR Part-I connected to main switch board or main control board all as specified and testing on completion including provision of earth strip protected by galvanised iron 40 mm bore medium grade pipe with all fittings from the earth electrode fixed along pole with and including 25 x 6mm flat iron clamp, bolts, nuts and washers and watering pipe shall be 20 mm bore GI medium grade from top of the earth electrode to bottom of the earth pit including all excavation and earth work in any type of soil and removal of soil upto 50 metre, PCC pit with pre-cast RCC cover with handle, charcoal/salt, funnel , CI frame etc complete all as directed. Notes :-(i) The concrete pit shall be made in PCC 1:3:6 type C-1, 40mm thick precast cover slab of RCC (1:2:4) type B-1 using 20mm graded stone aggregate with suitable MS handle in lieu of cast iron cover shown in electrical plate No 3 of MES SSR Part-I. Reinforcement in RCC cover shall be of 8mm dia TMT bars laid @150mm c/c both ways. (ii) Item includes the cost of 7.5 metre GI pipe for protection of earth strip. Any variation in length shall be adjusted through deviation order. (iii) Item includes cost of 7.5 metre earth strips. Any variation in length shall be adjusted through deviation order. (iv) Plate electrode shall be surrounded by adequate quantity of charcoal dust & salt to a packed thickness of 15 cm on all sides.

Inspecting, checking (All connections and Mechanism ) cleaning, servicing, overhauling , testing, callibrating the relays (IDMT, over current and earth fault) complete of 11 KV Vaccum circuit breakers indoor type, 630 Amps capacity including following works :- . (a) Taking out incoming and outgoing HT 11 KV, 3 Core cables from the electric system and and reconnecting the incoming and outgoing HT Cables complete of both panels. (b) All the connections of control wiring availability of proper DC supply and AC supply , incoming and outgoing connections and tightening them , cleaning the contacts and terminal with CTC solution and using the blower for dusting operation, raising and lowering mechanism. Note :- (i) Servicing, checking and caliberation of VCB shall be carried out by the representative of OEM only using primary and secondary injection kit. (ii) All the test rocord for proper tripping of CTs, raising and lowering operation mechanism and proper tripping system of over current and earth fault relay shall be mentioned and signed by the contractor, Engineer-in-Charge and representative of OEM shall be produced before allowing payment to the contractor.

Inspecting, checking (All connections and Mechanism ) cleaning, servicing, overhauling , testing, callibrating the relays (IDMT, over current and earth fault) complete of 11 KV Vaccum circuit breakers indoor type, 400 Amps capacity including following works :- . (a) Taking out incoming and outgoing HT 11 KV, 3 Core cables from the electric system and and reconnecting the incoming and outgoing HT Cables complete of both panels. (b) All the connections of control wiring availability of proper DC supply and AC supply , incoming and outgoing connections and tightening them , cleaning the contacts and terminal with CTC solution and using the blower for dusting operation, raising and lowering mechanism. Note :- (i) Servicing, checking and caliberation of VCB shall be carried out by the representative of OEM only using primary and secondary injection kit. (ii) All the test rocord for proper tripping of CTs, raising and lowering operation mechanism and proper tripping system of over current and earth fault relay shall be mentioned and signed by the contractor, Engineer-in-Charge and representative of OEM shall be produced before allowing payment to the contractor.

Supply and top up, filling of transformer oil as per IS 335 of 1993 Part II. Note :- (i) Oil shall be brought in the manufacture sealed contrainer (drum) and shall be kept in safe custody of Engineer-in-Charge. (ii) Contractor shall hand over the purchase voucher and manufacturer's test certificate to the engineer in charge. (iii) Di-electric strength shall not be less than 50 KV.

Supply only HV bushing with brass metal connecting rod, nut, bolt and washer for upto 160 KVA to 500 KVA capacity transformer.

Supply only LV Bushing of transformer with brass metal connecting rod, nut bolt and washer, for upto 160 KVA to 300 KVA capacity transformer.

Supply only LV Bushing of transformer with brass metal connecting rod, nut bolt and washer, for above 300 KVA to 500 KVA capacity transformer.

Supply and fix in replacement of Silica gel breather assembly with silica gel cristal for upto 160 KVA capacity transformer.

Supply and fix in replacement of Silica gel breather assembly with silica gel cristal for above 160 KVA to 300 KVA capacity transformer.

Supply and fix in replacement of Silica gel breather assembly with silica gel cristal for above 300 KVA to 500 KVA capacity transformer.

Supply and filling Silica gel crystal for breather assembly in any capacity of transformer as directed by Engineer in Charge.

M&L for painting of HT steel pole with cross arms, clamp of any length and shape for HT overhead line with two coat of aluminium paint including preparation of the existing surface including marking pole numbers like (HT-101) in a 150mm dia yellow circle & provide three blue & two white bends of width 30 cm by fluorescent paint, from top of PCC pedastal of pole complete.

M&L for painting of transformer complete with radiator of capacity upto 160 KVA, 11/.433 KV outdoor/indoor type after cleaning the body surface by rubbing with emery paper to remove oil strains, dust etc and appling two coat of heat resistance paint by spray paint including writing of SM/ MES No, capacity of transformer and date of installation complete.

M & L for painting of transformer complete with radiator of capacity for above 160 KVA to 300 KVA, 11/.433 KV outdoor/indoor type after cleaning the body surface by rubbing with emery paper to remove oil strains, dust etc and appling two coat of heat resistance paint by spray paint including writing of SM/ MES No, capacity of transformer and date of installation complete.

M & L for painting of transformer complete with radiator of capacity for above 300 KVA to 500 KVA, 11/.433 KV outdoor/indoor type after cleaning the body surface by rubbing with emery paper to remove oil strains, dust etc and appling two coat of heat resistance paint by spray paint including writing of SM/ MES No, capacity of transformer and date of installation complete.

Supply and fixing in replacement of pin type porcelain , vitreous, brown, transformer HT bushing insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height and 150 mm dia suitable for working pressure 11000 Volts grade complete all as specified and as directed.

Cutting, trimming and vending tree branches along HT over head lines, after arranging electrical shutdown , including taking all precautions while working on lines using own T&P by the contractor. Note :- (i) Branches of trees shall be cut upto 3 metre from the outer conductor of OH line. (ii) Paring/trimming of branches shall be done after obtaining necessary shut down in writing by the Engineer-in-Charge to avoid any casualty.

M&L for transportation of transformer to nearest workshop for repair/replacement of transformer winding and return back for insallation in its original position / location after repairing from workshop upto 500KVA capacity complete all as specified and as directed by Engineer in Charge. Note:- Rates includes transportation, T&P and manpower.

M&L required for shifting of servicable transformer upto 500KVA from MES store yard/sub station(indoor/outdoor)for installtion in place of unservicable transformer and back after replacing with repaired transformer upto 400 KVA complete all as specified and as directed by Engineer in Charge.

M & L for rewinding of HT coils with super enameled copper wire /strip DPC/super enameled matching with existing gauge and insulating materials of high class as per manufacturer recomendation with packing/insulation material in each layer of winding, backing the core assembly with the help of oven duly varnishing the coil to improve IR value and to eliminate moisture and inserting the the core assembly after repair the core and making connection with HT/LT bushing studs and closing the tank top cover by fixing nuts, bolts and washers (top cover gasket will be measured and paid seperately) complete all as specified in particular specifications. Note :- (i) Burnt coils shall be handed over to the contractor by the Engineer-in-Charge through issue voucher for rewinding giving reference of transformer i.e. make Capacity, MES/SM number of transformer etc. (ii) Weight, number of turns, gauge, insulation of winding wire shall be as per OEM. ((iii) Work of rewinding work shall be carried out throught OEM or their authorised vendor only. (iv) Old winding copper wire shall be contractor property and necessary amount as per schedule of credit shall be deducted from the contractor due payment.

M & L for rewinding of LT coils with super enameled copper wire /strip DPC/super enameled matching with existing gauge and insulating materials of high class as per manufacturer recomendation with packing/insulation material in each layer of winding, backing the core assembly with the help of oven duly varnishing the coil to improve IR value and to eliminate moisture and inserting the the core assembly after repair the core and making connection with HT/LT bushing studs and closing the tank top cover by fixing nuts, bolts and washers (top cover gasket will be measured and paid seperately) complete all as specified in particular specifications. Note :- (i) Burnt coils shall be handed over to the contractor by the Engineer-in-Charge through issue voucher for rewinding giving reference of transformer i.e. make Capacity, MES/SM number of transformer etc. (ii) Weight, number of turns, gauge, insulation of winding wire shall be as per OEM. ((iii) Work of rewinding work shall be carried out throught OEM or their authorised vendor only. (iv) Old winding copper wire shall be contractor property and necessary amount as per schedule of credit shall be deducted from the contractor due payment.

S & F in replacement of unserviceable synthetic rubberized corksheet/gasket of 6mm thick for fixing top cover and HT/LT side transformer bushes of suitable size and shape complete all as directed.

Supply and fixing in replacement of space heater, ISI marked suitable for 11KV VCB Panel/ RMU, complete all as directed. Make: as per existing/sample.

Supply and fixing in replacement of thermostat suitable for 11 KV HT panel all as specified. Make: As per existing/sample.

Supply and fixing in replacement of Closing coil, ISI marked suitable for 11KV VCB Panel, complete all as directed. Make: As per existing/sample.

Supply and fixing in replacement of tripping coil, ISI marked suitable for 11KV VCB Panel, complete all as directed. Make: As per existing/sample.

Supply and fixing in repair power pack SMPS input 110 Volt AC with PNE 50 Hz and output 110 volt DC with battery complete suitable for 11 KV HT VCB, complete all as directed.

Supply & fixing or fabricated of SS frame glow sign boards on retrofit sheet size 200cm x 100cm duly indicating the name of installation and logo of MES with suitable redium stencil, including LED lights fittings and elect connection with necessary items for fixing on roof /wall grouting and PCC work complete all as directed by Engr-in-Charge. Note : Background colour sky blue and matter or size of stencil as direction by Enger-in-Charge.

Site cleaning for area cleaning at substation including herbs shrubs and grass removing bricks bats complete all as directed.

S & F in replacement of motor & gear assembly 220 volts AC/DC or as per model suitable for 630 Amps HT VCB as per existing make and model and directed by Engr-in-Charge. Make : Crompton Greeves/Alston

S & F in repairs of motor & gear assembly 220 volts AC/DC or as per model suitable for 400Amps HT VCB as per existing make and model and directed by Engr-in-Charge. Make : Crompton Greeves/Alston

S & F in repairs of spout insulator suitable for 630Amps HT VCB of Crompton Greaves make installed in 11 KV HT panel all as specified.

S & F in repairs of spout insulator suitable for 400Amps HT VCB of Crompton Greaves make installed in 11 KV HT panel all as specified.

S&F in replacement of LED type indicator lamp of red/blue/green colour for phase indication with and including taking down of unserviceable indicator and making all electric connection, in existing panel, complete all as directed. Make: C&S/Converse/Salzer/Schneider Elect/BCH.

S & F in replacement of push button with NO/NC contact suitable for capacitor panel all as specified. Make: as per sample.

Supply and fix in replacement of Main shaft inter lock assembly suitable for HT 11KV/12KV VCB 630 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of Big cam with main shaft suitable for HT 11KV/12KV VCB 630 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of Big gear assembly suitable for HT 11KV/12KV VCB 630 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of Small gear assembly suitable for HT 11KV/12KV VCB 630 Amps as per existing make and model and directed by Engr-in-Charge.

S & F in replacement of temperature gauge 0 C to 125 C for transformer installed at site with all accessories, complete all as directed.

Supply, installation, testing and commissioning in repair Current transformer single phase resign cast CTs of 15 VA burden class 1.5 p 10 & PS and ratio 100/50 - 5 all as directed by Engr-in-charge

Supply, installation, testing and commissioning in repair Current transformer single phase resign cast CTs of 15 VA burden class 1.5 p 10 & PS and ratio 200/100 - 5 all as directed by Engr-in-charge

Supply, installation, testing and commissioning in repair PT 11 KV/ 110 Volt suitablefor 11 KV VCB indoor type all as directed by Engr-in-charge

Supply and fixing in repair HRC fuses 02 Amp to 05 amp all as directed by Engr-in-charge.

M&L for defect rectification in HT 11 KV cable laid in trenches by locating fault with the help of electronic fault locator machine comprising of surge generator pulse ECHP fault location with high frequency distance calculator etc. Excavation in any type of soil strata exposing the cable fault removal of deteriorated position of cable treating of cable and keeping the same ready for jointing work for cables of size upto 300 sqmm 3 core. The fault located equipment will be brought at site within 02 hours of Instruction received from Engineer-in-charge complete all as specified and as directed by Engineer-in-charge

M&L Boring of holes (manually) under road , hard standing without damaging the surface for 80 mm bore GI Pipe. NOTE:- (i) Depth of hole shall be 1 Metre below the top surface of Road / hard standing. (ii) Pipe shall be measured and paid seperately under respective item of the schedule.

Lowering of transformer upto 500KVA from two pole/four pole structure/plinth , disconnecting of all LT and HT connection after disconnecting shifting of local Work Shop after repair . reconnection at same position. Note :- Transportation Charge should be included in the above unit quoted rate

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 50 to 70 sqmm

All as per item No 65 above but Size 95 to 120 sqmm

All as per item No 65 above but Size 150 to 185 sqmm

All as per item No 65 above but Size 240 to 300 sqmm

All as per item No 65 above but Size 400 sqmm

M/S VIJAY SINGH

AARAV CONSTRUCTION