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

Amount

Excavating in trenches in earth containing soft/loose soil, n.exc. 1.5metre wide and n.exc. 1.5metre deep and getting out complete all as specified and directed by Engineer-in-Charge.

Site clearence around substation including clearing away all grass vegetation saplings, shrubs, bushwood, undergrowth, roots and trees not exceeding 30 cm girth (measured one metre above ground level) and removing rubbish bricks bats etc complete all as specified and directed by Engineer-in-Charge.

Returning filling in foundation / trenches including spreading leveling, watering and well ramming in layers not exceeding 25cm thick in soil complete all as specified and directed by Engineer-in-Charge.

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 all as specified and directed by Engineer-in-Charge.

Sand cushioning for under ground cable with locally available sand for protection of cable 8cm before laying cable and 15cm deep over the cable as loose filling layer including spreading and consolidations complete all as specified and directed by Engineer-in-Charge. Note :- Punned thickness 18cm will be measured and paid.

Supply and laying un-reinforced precast concrete cable cover class HVP type 2 with peak size 450 mm x 180 mm x 40 mm complete including taking down old bricks/ pcc cable cover received during old cable exit all as specified and directed by Engineer-in-Charge.

Supply, laying ,Jointing & 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 complete all as specified and directed by Engineer-in-Charge. 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 , Jointing & 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 complete all as specified and directed by Engineer-in-Charge. 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, Jointing & 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 complete all as specified and directed by Engineer-in-Charge. 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.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, out door termination suitable for cross sectional area 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, out door termination suitable for cross sectional area 120 to 185 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, out door termination suitable for cross sectional area 240 to 300 sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, indoor termination suitable for cross sectional area 120 to 185 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, indoor termination suitable for cross sectional area 240 to 300 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, straight through suitable for cross sectional area 95 sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, straight through suitable for cross sectional area 120 to 185 sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

S & F of Cable jointing kit for 11 KV (earthed) heat shrinkable, straight through suitable for cross sectional area 240 to 400 sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge.

Earthing complete with galvanised steel earth plate electrode 600x600x6mm thick directly burried in ground (earth pit not less than 2.25 m deep below ground level) with top edge of earth plate not less than 1.5metre below the ground level connected to GI strip 32x6 mm by means of bolts nuts check nuts and washers of galvanised iron at 2 points & GI pipe 40 mm bore medium grade for protection of earth strip, PCC chamber 1:3:6 (type C-1) using 20mm graded stone aggregate, funnel with wire mesh, 50 mm thick cover of RCC 1:2:4 type B-1 using 20mm graded stone aggregate reinforced with 8 mm MS bars at 150 mm centre to centre both ways, CI frame and charcoal dust and common salt, all as shown in electrical plate No. 3 of MES SSR part-I and making test point as specified including excavation & earth work in any type of soil and connecting the earthing to an earthing point/equipment as specified and directed & testing on completion including taking out old earthing complete. NOTES : (i) The concrete pit shall be made in PCC 1:3:6 type C-1, using 20mm graded crushed stone aggregate 40mm thick precast cover slab of RCC (1:2:4), type B-1, using 20mm graded crushed stone aggregate with suitable MS handle in lieu of CI cover. (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) Items includes cost of 7.5 metre earth lead strip. Any variation in length shall be adjusted through deviation order. (iv) Earth electrode shall be surrounded by adequate quantity of charcoal dust and 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 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 filling of transformer oil EHV 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 AT 2.5 MM GAP

Supply only HV bushing with brass metal connecting rod, nut, bolt and washer for 160 KVA to 500 KVA capacity transformer complete including taking down old unserviceable HV Busing all as specified and directed by Engr-In-Charge.

Supply only LV Bushing of transformer with brass metal connecting rod, nut bolt and washer, for above 160 KVA to 300 KVA capacity transformer complete including taking down old unserviceable LV Busing all as specified and directed by Engr-In-Charge.

Supply only LV Bushing of transformer with brass metal connecting rod, nut bolt and washer, for above 300 KVA to 500 KVA capacity transformer complete including taking down old unserviceable LV Busing all as specified and directed by Engr-In-Charge.

S & F in Replacement of Silica gel breather assembly with silica gel cristal for upto 160 KVA capacity transformer complete all as specified and directed by Engr-In-Charge.

S & F in Replacement of Silica gel breather assembly with silica gel cristal for above 160 KVA to 300 KVA capacity transformer complete all as specified and directed by Engr-In-Charge.

S & F in Replacement of Silica gel breather assembly with silica gel cristal for above 300 KVA to 500 KVA capacity transformer complete all as specified and directed by Engr-In-Charge.

Supply and filling Silica gel cristal in breather assembly in any capacity of transformer complete all as specified and directed by Engr-In-Charge.

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 all as specified and directed by Engineer-in-Charge.

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 all as specified and directed by Engineer-in-Charge.

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 all as specified and directed by Engineer-in-Charge.

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 all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement pin type porcelain , vitreous, brown, 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 directed by Engineer-in-Charge.

Paring, 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 complete all as specified and directed by Engineer-in-Charge.. Note :- (i) Branches of trees shall be cut upto 3 metre from the outer conductor of OH line. (ii) Cutting/trimming of branches shall be done after obtaining necessary shut down in writing by the Engineer-in-Charge to avoid any casualty.

Rewinding/Reinsulation of HT coils of any size and type of transformer including cleaning the burnt out insulating materials, brazing and rewinding with appropriate turns and size of super enamelled copper winding wire including filling insulation paper complete and including taking down old unserviceable copper wire etc 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.

Rewinding/Reinsulation of LT coils of any size and type of transformer including cleaning the burnt out insulating materials, brazing and rewinding with appropriate turns and size of super enamelled copper winding wire including filling insulation paper etc complete and including taking down old unserviceable copper wire 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.

Supply & fixing in replacement gasket set of synthetic rubberized cork sheet 6 mm thick for transformer top lid cover and HT/LT side transformer bushes suitable for transformer of capacity 315/300/400/630 KVA complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of space heater, ISI marked suitable for 11KV VCB Panel/RMU, complete all as all as specified and directed by Engineer-in-Charge. Make : As per existing / sample kept in GE Office.

Supply and fixing in replacement of thermostat suitable for 11 KV HT panel all as specified and directed by Engineer-in-Charge. Make : As per existing / sample kept in GE Office.

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

Supply and fixing in replacement of tripping coil, ISI marked suitable for 11 KV VCB Panel, complete all as specified and directed by Engineer-in-Charge. Make : As per existing / sample kept in GE Office.

Supply and fixing in replacement 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 specified and directed by Engineer-in-Charge.

Taking out old sign board and S & F new Sign board made out of 3mm thick aluminium composite panel both side alongwith retro reflective sheeting (high intensity prismatic as per IR C-67) on both side with stainless steel square pipe frame with letters & symbols and stainless steel pipe post (50mm dia) embedded in PCC complete all as specified and as shown on drawing No CWE/BAM/TD-37 Sheet No. 1/1 complete all as specified and directed by Engineer-in-Charge. Note :- (i) Quoted rate shall deem to be included cost of earth work and PCC for embeding post hole. (ii) Quoted rate shall also be deem to be included cost of fixing letter and symbols (total 20 number minimum) on each board of size 24mm (minimum) wide, 75mm (minimum) high of best quality retro reflective Sheet (blue colour) as decided by GE.

Supply and fixing 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 complete all as specified and directed by Engineer-in-Charge. Make : Crompton Greaves/Alstom.

Supply and fixing in replacement of motor and gear assembly 220 volts AC/DC or as per model suitable for 400 Amps HT VCB as per existing make and model complete all as specified and directed by Engineer-in-Charge. Make : Crompton Greaves/Alstom.

Supply and fixing in replacement of spout insulator suitable for 630 Amps HT VCB of Crompton Greaves make installed at 11 KV HT panel complete all as specified and directed by Engineer-in-Charge..

Supply and fixing in replacement of spout insulator suitable for 400 Amps HT VCB of Crompton Greaves make installed in 11 KV HT panel complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of LED type indicator lamp of red/blue/green colour for phase indication including taking down of unserviceable indicator and making all electric connection, in existing panel, complete all as specified and directed. Make : C&S/Schneider Elect or other make as specified in Appendix 'B' to particular specifications. .

S&F in replacement of push button with NO/NC contract suitable for capacitor panel complete all as specified and directed by Engineer-in-Charge. Make : As per existing model / as per sampal kept in GE office

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 complete all as specified and directed by Engineer-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 complete all as specified and directed by Engineer-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 complete all as specified and directed by Engineer-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 complete all as specified and directed by Engineer-in-Charge.

Supply and fix in replacement of temperature gauge 0º C to 125º C for transformer installed at site with all accessories, complete all as specified and directed by Engineer-in-Charge.

Supply, installation, testing and commissioning Current transformer outdoor type (CTs) single pole 3 core cast epoxy type of 15 VA burden, class 1, 5 P 10 and PS having turn ratio 100 - 50/5 Amp complete and including taking down old current transformer all as specified and directed by Engineer-in-Charge.

Supply, installation, testing and commissioning Current transformer outdoor type (CTs) single pole 3 core cast epoxy type of 15 VA burden, class 1, 5 P 10 and PS having turn ratio 200 - 100/5 Amp complete and including taking down old current transformer all as specified and directed by Engineer-in-Charge.

Supply, installation, testing and commissioning in replacement of air Potential Transformer 11 KV/110 Volt suitable for existing 11 KV VCB indoor type air cooling complete all as specified and directed by Engineer-in-Charge.

Supply anf fixing in repair HRC fuses 02 Amp to 05 amp complete all as specified and directed by Engineer-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 pules 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 complete all as specified and as directed by Engineer-in-Charge. Note :- The fault locator equipment will be brought at site within two hours of instruction received from Engineer-in-Charge

Boring of holes under road, pavement, hard standing by hand method without damaging the surface for 80mm bore GI pipe complete all as specified and as directed by Engineer-in-Charge. Note :-(i) Depth of hole shall be 1 metre below the top surface of road / pavement / hard standing. (ii) Pipe shall be measured and paid for separetely under respective item of this schedule.

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 50 to 70 Sqmm complete all as specified and directed by Engr-In-Charge.

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 95 to 120 Sqmm complete all as specified and directed by Engr-In-Charge.

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 150 to 185 Sqmm complete all as specified and directed by Engr-In-Charge.

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 240 to 300 Sqmm complete all as specified and directed by Engr-In-Charge.

Supply and fix in replacement of Aluminium tube terminals (heavy duty thimble) of size 400 Sqmm complete all as specified and directed by Engr-In-Charge.

Titco Electricals