REPAIR MAINT AND OVERHAULING OF STEP DOWN TRANSFORMERS HT BREAKERS BACKUP SYSTEM AND ALLIED WORKS AT KALUCHAK RATNUCHAK AND BD BARI MIL STN UNDER GE KALUCHAK

Amount

Repair/Servicing/overhauling of the Indoor Type floor mounted Metal Clad 350 MVA rupturing capacity at 11 KV rated voltage, metal clad, dead front, free standing, floor mounting, vertical isolation, horizontal; drawout with necessary circuit breaker of V.C.B Panel Board with the totally enclosed and fully interlocked horizontal drawn out, horizontal isolation type, single break, Trip free mechanism, motorized/ manually charged & auto/manually, closing system suitable for use on 11 KV, 3-Phase, 50 HZ AC supply with the short circuit level of 350 MVA Vacuum circuit breaker of 630/800 Amp nominal current including dismantling the unit, opening the same at site or as directed , cleaning of all mechanical and electrical parts, painting of complete panel including repair and replacement as under:- (i) Proper/Technically cleaning of each and every part of VCB for dust, deposits, foreign particles etc (ii) Proper de- greasing the various parts of the VCB. (iii) Proper cleaning of all parts with the suitable cleaning agents. .......Contd to srl item No-1.01.....

(x) Locations of HT Panels: (a) MRS Kaluchak (b) MRS Ratnuchak (c) MRS Tipu line (d) MRS Rly Stn Badi Brahmana (v)MRS BD Bari Notes :- (a) This item includes the transportation charges, loading and unloading by way of crane at site,workshop and viseversa. (b)New spares parts shall be measured and paid separately under relevant items as supply only (c) cost of sleeves if replaced shall be deemed to be included in unit rate only. (d) The service provider shall be responsible for any repair replacement during the defect liability period of two years

Supply only numirical overcurrent with 01 Earth fault relay .

Supply only Epoxy resin cast three phase , potential Transformer 11KV/110 V of suitable ratio as per site requirement

Supply only Spring charged motor 600RPM class A insulation Type 220V DC

Supply only Vaccuum Interrupter .Make Crompton/BEL

Supply only Busbar Spout with copper Busbar(60x10mm) 800Amps

Supply only closing coil with shaft assembly

Supply only Tripping coil with shaft assembly

Supply only LED Indicating lamps 30V DC

Complete control and protection wiring with suitable size copper wire as per OEM recommendation

Supply only Analogue AM meter ,96x96mm

Supply only Breaker control switch

Supply only bell 30V DC

Supply only complete operating mechanism

Supply only connector for auxiliary switch

Supply only DYDAC control, heavy duty connector plug 24 PIN

Supply only current transformers (primary and secondary) as per existing suitable ratio (750-375/5-5-2.89 Amp) and OEM design with complete settings with relay ,short circuit instrument ,earthfault instrument , metering equipment with transformer ratio adjustment with burden ,accuracy etc complete all as specified and as directed.

Supply only hooter electrically repaired 240 volts 50 Hz and testing complete

Supply only relays for AC failure alarm, supervision alarm ,annuciation acheme connected with circuit breaker and testing facilities complete

Supply only interlocking mechanism assembly for functional requirements and testing complete

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. .......Contd to srl item No- 21.01.....

Notes :- (i) Servicing, checking and caliberation of VCB shall be carried out by the representative of OEM only. (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.

Testing of dielectric strength of transformer oil of indoor/outdoor type transformer , 11KV/433 volt,& on line filteration of transformer oil by passing through filtration plant minimum three cycles to remove moisture , impurities & for improving di-electic strength to above 52 KV for 2.5mm gap and including filling with new transformer oil for toping up & testing after filtration complete as specified and directed. Note (a): transformer oil will be measured & paid separately. (b) Contractor carry out the filtration at site by on line machine filtration shall cost quoted in unit rate only.)

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.

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

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

Supply only LV Bushing of transformer with brass metal connecting rod, nut bolt and washer, for above 200 KVA to 500 KVA capacity transformer.

Supply only Silica gel breather assembly with silica gel cristal (100 gram) for upto 160 KVA capacity transformer.

Supply only Silica gel breather assembly with silica gel cristal (250gram) for above 160 KVA to 300 KVA capacity transformer.

Supply only Silica gel breather assembly with silica gel cristal (500 gram) for above 300 KVA to 500 KVA capacity transformer.

Supply only Silica gel breather assembly with silica gel cristal (1000 gram) for above 300 KVA to 500 KVA capacity transformer.

Supply and fix in repairs arching horns 250Amp as per IS 3347 Part V, section II 1979 suitable for capacity upto 500KVA complete all as directed.

Taking proper shut down in writing, disconnecting the LT and HT electric main from transformer of capacity upto 500KVA, removing the transformer from pole structure/platform shifting to authorised workshop after draining out the transformer oil at site, dismantling and disconnecting damaged HT/LT coil to facilitate necessary repairs, rewinding / reconditioning re-assembling the transformer, bringing back to the site, refilling new or dehydrated old oil, transformer, connecting with existing electrical system of HT and LT including testing complete all as specified and directed. (Winding wire and other items mentioned in schedule 'A' will be measured and paid separately). .......Contd to srl item No- 34.01.....

Rewinding (Double paper covering) 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 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 through 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's 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 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 through 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 and fix in repair off load tap changer of capacity 30Amp , 5 position syuitable for transformer upto 500KVA complete all as specified and as directed.

Supply & fix in repair of thermo meter(oil temperature gauge) for 11 KV indoor/Outdoor type transformers upto capacity 500KVA omplete all as specified and directed.

Supply & fixing in repair gasket set of synthetic rubberized cork sheet 10 mm thick for transformer top lid cover and HT/LT side transformer bushes suitable for transformer of capacity upto 500 KVA complete all as specified and directed by Engineer-in-Charge.

Taking down carefully switch air break, gang operated, triple pole complete and Supply, installing, connecting and commissioning switch air break gang operated, triple pole, vertical mounted, out door type of 12 insulators, mechanically operated, mounted on insulators and steel frame, with operating mechanism and operating rod of 25mm bore GI pipe heavy grade worked from ground level, with locking arrangements including brass pad locks with key (Make. Godrej/Harrison/Link) for current rating 400 Amp at 11 KV, complete with drop out fuse set fuse carrier and fuse elements having 100 Amp at 11 KV complete all as specified and directed by Engineer-in-Charge.

Restringing of HT overhead line conductor comprising of three run ACSR conductor and two run GI earth contunity conductor after opening from insulators, including restraining same and winding on insulator with proper size of binding wire upto permissible sag complete all as specified and directed by Engineer-in-Charge. Notes :- (i) Each span shall be considered as 30 metre length of HT overhead line. (ii) Quoted rate shall be deemed to included the cost of winding wire and replacement of insulator if damaged during restraining of conductor. (iii) Insulator shall be paid separately as supply only under respective item of this schedule.

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 complete all as specified and directed by Engineer-in-Charge.. Note :- (i) Each span shall be considered as 30 metre length of HT overhead line. (ii) Branches of trees shall be cut upto 3 metre from the outer conductor of OH line. (iii) Cutting/trimming of branches shall be done after obtaining necessary shut down in writing by the Engineer-in-Charge to avoid any casualty.

Material and labour for preparation of old rusted steel surfaces of LT/HT swaged poles (of any length) and applying one coat of synthetic enamel paint up to 1.2 meter height as per the existing pattern above the P.C.C coping and one coat of aluminium paint beyond 1.2 meter height (for the rest portion) including cross arms, brackets and re-writing pole numbers and cutting vegetation growth all around and on the poles up to 1 metre radius complete all as specified and directed

Material and labour paintng of 4 pole structure of any type/size/length and removing from existing pole painting by using wire brush and using with emary paper and cleaning with chemical agents after cleaning of steel tubular pole and GI brackets and cross arms in two coats of red oxide primer and two coats of silver oil painting upto smooth finishining and painting to satisfactorly by engr-in-charge and painting work carryout at any height and including marking of pole numers as directed and safety eqpts & tools will be own arrangement and complete all as specified and directed. Note:- Cost of painting material is deemed to be included in the quoted rate.

All as per item No. 44 here-in-before but 2 pole structure and complete all as specified and directed.

M&L in repair cross arms, bracings, supports, clamps and back plates fabricated in structural steel sections including nuts, bolts,washers, welding, bending, fabrication, cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat one undre coat and one finishing coat of paint and including removing old unserviceable item complete all as specified and directed

Steel tubular swaged pole 11.0 m long, type 410 SP-53, weight approximately 175 kgs to 183 kgs, pole should be in one piece only and smooth finishing, ISI marked, complete with all accessories, such as cast iron base plate, finial taper plug, bolts, nuts, screws,,washers and drilling of holes for continious GI earth wire as specified including applying two coats of aluminium paint over one coat of red oxide zinc chrome primer and embedded portion shall be painted with two coats of black japan paint including preparation of surfaces including taking down old unserviceable PCC pole of any type/length complete all as specified and directed.

Excavating in trenches (soft/loose/dense 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.

All as per Item No: 48 above but depth exceeding beyond 1.5mtr and not exc 3 metre all as specified and as directed

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.

Supply and spreading sand Dry cushioning to cable providing with a layer of sand 8cm deep before laying the cable and 15cm deep after laying and stretching the cable in trenches complete all as specified and as directed by the Engineer-in-Charge. Note :- Punned thickness shall be measured

Well burnt bricks,Sub class 'B' bricks, best quality locally available laid flat, dry in trenches for cable protection complete all as specified and as directed

Material and labour for PCC 1:3:6 Type C-2 (Using 40 mm graded stone aggregate as in foundation of pole, stay and filling and mass concrete) including providing necessary form work complete all as specified and as directed

Material and labour for PCC 1:2:4 type B1 using 20 mm graded stone aggregate as in copping of electric pole at site including providing necessary form work complete all as specified and as directed.

Dismantling ACSR conductor of any size from HT pole and setting aside the serviceable quantity for reuse and removing the unserviceable quantity from site complete all as specified and as directed.

Supply, laying & testing cross linked polyethylene insulated (XLPE) insulated 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)The cable shall be in one length unless otherwise directed by GE. (iii) Old unserviceable cable shall be taken on charge by the department.

Cable jointing kit for 11 KV (earthed) heat shrinkable, straight through joint out door 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. Note:- (i) Fault location shall be detected and cost of same shall deemed to be included in the quoted rate including necessary earth work.

Cable jointing kit for 11 KV (earthed) heat shrinkable, straight through joint out door suitable for cross sectional area 120/185 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. Note:- (i) Fault location shall be detected and cost of same shall deemed to be included in the quoted rate including necessary earth work.

Supply and fix cable end jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm including connection and testing, complete all as specified and directed.

Cable end jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm including connection and testing complete all as specified and directed.

Cable end jointing kit for 11KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 to 95 sqmm including connection and testing complete all as specified and directed.

Cable end jointing kit for 11KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm including connection and testing complete all as specified and directed.

Cable end jointing kit for 33KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 sqmm including connection and testing complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for straight through cold shrink type joint complete with jointing material and accessories suitable for 1 core XLPE armoured aluminium conductor aerial bunch cable of size 35 sqmm, complete all as specified and directed.

Cable jointing kit for 11 KV (Earthed) grade cable for end termination cold shrink type joint complete with jointing material and accessories suitable for 1 core XLPE armoured aluminium conductor aerial bunch cable of size 35 sqmm, complete all as specified and directed.

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.

VEE ESS ENGINEERS