REPAIR MAINTENANCE OF 11 KV SUB STATION TRANSFORMER, SERVO STABILIZER CONTROL PANELS VCBS CT PT GOD DO FUSES CONTROL ETC AT NORTH SIDE OF RUNWAY OF AGE EM I UNDER GE NW VASCO

Amount

M & L for filtration and dehydration of transformer oil by dehydration machine to achieve the die-electric strength/ insulation value upto 65 KV/40KV (RMS) at standard gap of electrodes 2.5 mm for one minute in various capacity of transformers 33/11KV and 11/0.433KV including insulation testing of oil with help of suitable equipments before and after dehydration including BDV Test compete all as specified and as directed.

Notes: (i) Contractor shall have to arrange the dehydration machine and transformer oil dielectric strength testing equipment as mentioned and same shall be deemed to be included in the item rate quoted. (ii) Test result of transformer oil before and after dehydartion is required to submit by contractor duly signed by all concerned. (iii) The contractor shall ensure that the conservator tanks are full to its level before commencement of dehydration process. (iv) Additional quantity of transformer oil if any required for making the oil level upto the requirement in transformer shall be measured and paid separately as supply and filling but its cost of heating shall be deemed to be included in the rate quoted for above item.

M&L for EHV grade insulating transformer oil all as specified and as directed.

M & L for testing and calibration of 11KV VCBs indoor/outdoor type alongwith control panel and control wiring, protection system and relays system (relay to tripping coil auxiliary switch male and female housing cut outs etc) , checking of quality of vacuum interrupter, insulation resistances, static contact resistance, Testing ( IR value, Ratio test, Polarity test) and connection verification of 11 KV Current transformer( Set of three) by PRIMARY INJECTION KIT ,and Testing and calibration of relay( set of two Over current and one earth fault) by SECONDARY INJECTION KIT including all other functional tests of the VCB, C&R panel and CTs, PTs. complete all as specified and as directed.

Disconnecting, opening of VCB of any description and any make of rating 11 KV 400/800 Amps capacity for servicing / overhauling, taking out and removing unserviceable / defective parts including cleaning & servicing, greasing, oiling of the parts etc and replacement of unserviceable parts with new one, reassembling the VCB after overhauling/ servicing and its testing complete all a specified and as directed.

Notes: (i) Replacement of unserviceable parts shall be measured and paid for separately under appropriate item of Sch 'A' as supply only but fixing charges of the parts replaced /repaired is deemed to be included in these item. (ii) Servicing shall be got carried out by the authorised rep of the VCB manufacturer and the service engineer will submit a service report for each VCB. (iii) Any item not included in CA and required for successful operation of the panel will be provided by the contractor & same shall deemed to be included rate quoted.

Supply only following items/spare parts suitable for 11KV VCB, 400/800 Amps capacity of any make dismantled / fixed under Sch 'A' item No: 01 here-in-before complete all as specified and as directed.

Vacuum circuit breaker main mechanism assembly complete with all accessories all as specified and as directed.

Vacuum Interrupter type WL-33379 suitable for 11 KV VCB Panel complete all as specified and as directed.

Isolating contact assembly 400/800 Amps suitable for 11 KV VCB Panel complete all as specified and as directed.

Tripping Coil assembly 30 Volts DC suitable for 11 KV VCB Panel complete all as specified and as directed.

Close Coil assembly 30 Volts DC suitable for 11 KV VCB Panel complete all as specified and as directed.

Motor & Gear assembly 110V AC and 220 AC for 11 KV VCB Panel complete all as specified and as directed.

TNC switch for 11 KV VCB Panel complete all as specified and as directed.

Indication lamp LED type suitable for 230 Volts AC 50Hz and 110/30 Volts DC supply all as specified and as directed.

Supply, install ,testing and commissioning of Micro processor base relay (02 O/C + 01 EF) for 11 KV VCB panel , rating 5 Amps, Auxiliary supply 20-110 Volt DC complete all as specified and directed. Notes: (i) Necessary addition/ alteration to existing VCB front panel such as cutting/welding of front size of panel board/position if required including necessary modification of wiring shall be carried out at site by the contractor without any extra cost. (ii) The digital relay shall have following protections (a) Phase over current protection (b) earth fault protection (d) Over voltage (e) Breaker failure indication (f) Auxiliary power supply 24-110 V DC

Disconnecting and taking down unserviceable current transformer of any description and in any position and supply, installation, commissioning and testing of cast resin type 11KV current transformer having ratio 100+50/5+5A as per IS: 2705 having protection core class 5P10, burden of 15VA and metering core class CL1.0 and burden of 15VA, breaking capacity of 13.1 KV for 1.0 second all as specified and as directed.

Disconnecting and taking down unserviceable voltage transformer of any description and in any position and supply, installation, commissioning and testing for 11KV single phase indoor oil cooled PT of ratio 11KV/RT 3/10V/RT 3/110/RT 3 class 0.5-3, burden 100VA, insulation level 35/75 KV, voltage factor 1.2 cont and 1.9 for 30 sec, conforming to IS-3156 complete all as specified and as directed.

Supply install ,testing and commissioning of Power pack unit input voltage 180-250 Voltage and out put voltage 24 Volt DC having 4-digit digital Volt & Ampere meter, High resolution D/A, A/D converter , Digital interface as standard function etc. complete all as specified and as directed including taking out U/S battery bank unit.

Excavation in trenches n.exc 1.5m wide & n.exc 1.5m in depth for laying & removing of cable any sizes and getting out in hard/dense soil all as specified and as directed.

All as per Item No.18 here in before, but in soft disintegrated rock/ laterite rock all as specified and as directed.

Returning filling in excavated earth work including spreading, levelling, watering and well ramming in layers n.exc 25cm thick in any strata all as specified and as directed.

Removing excavated soil to a distance n.exc 50m, depositing where directed at a level n.exc 1.5 above the starting point all as specified and as directed.

Supply/ Lay dry river sand /m -sand in trenches for cable protection all as specified and as directed. Note : Punned thickness only shall be measured & paid separately

Supply and lay un-reinforced precast concrete cable covers, class HV , type- I with peak, size 300mm x 180mm x 40mm, all as specified and as directed.

S & F in trench/on wall in repairs GI tubing light grade 100 mm dia for road crossing and cable protection all as specified and as directed.

M & L for PCC 1:4:8 type D-2 using 40 mm graded stone aggregate including use and waste of form work of concrete for pole and stay foundation all as specified and as directed.

M & L for PCC 1:3:6 type C-1 using 20 mm graded stone aggregate including use and waste of form work for pole coping/ any description all as specified and as directed.

M&L for Electric yard gravelling of 15.0 cm (loose thickness) by broken stone of 40 mm size in and around two pole/ four pole structure/ substation complete all as specified and as directed.

Supply & Lay , testing and commissioning XLPE cable , PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 120 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing in different locations / areas complete all as specified and as directed.

All as per item No 28 here in before, but of cable size 3 core 95 sqmm all as specified and as directed.

Taking out old but serviceable ACB of capacity 400 to 1200 amps 415 volts AC 50 HZ at various sub station and carry out necessary servicing , greasing to fixed and movable part , cleaning complete internally and testing after reinstallation (Any damage occurs during servicing shall be borne by the contractor ) all as specified and as directed.

Supply and fix charging motor 110V AC/DC, 220V AC/DC of suitable size for ACB of capacity 400 to 1200 Amps complete all as specified and as directed.

Supply and fix control relay for charging motor 110V AC/DC, 220V AC/DC of suitable size for ACB of capacity 400 to 1200 Amps complete all as specified and as directed.

Dismantling old and unsv stay assy complete comprising of stay clamp , stay wire , stay insulator , stay grip , thimble , bow , stay rod 20 mm dia and stay plate etc including breaking of cement concrete complete all as specified and as directed.

M&L for stay assy complete comprising of stay clamp , stay wire , stay insulator , stay grip , thimble , bow , stay rod 20 mm dia and stay plate etc as shown in electrical plate No -01 all as specified and as directed. Note : Loop insulators , stay clamps , excavations and earth work shall be measured and paid seperately under appropriate items

M & L for earthing complete with GI earth plate 60cm x 60cm x 6mm thick buried directly in ground/ earth pit not less than 2.25m below ground level with top edge of the plate not less than 1.5m below ground level connected to 32x6mm GI Strip by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electric plate No.5 of MES SSR Part I connected to earthing test point, testing complete including necessary earth pit PCC 1: 3: 6 chamber with CI cover refilling of soil etc complete all as specified and as directed.

Supply and install 11 KV outdoor type gang operated air break switch triple pole machinically operated mounted on insulator and steel frame, with operating mechanism worked from ground level for current rating upto 200 amps complete all as specified and as directed.(Cost of GOD includes cost of GI Pipe required for operation and these rates based on reputed manufacturer)

Servicing and maintenance of Gang Operated Switch, Drop out fuse assembly triple pole, by applying white petroleum jelly, greasing the operating mechanism, drop out fuse assembly (Set of three); repairing/replacing worn out male contact(moving blade contact) , Female contact(Fixed jaw contact), post insulators (Each set), copper jumper, MS jumper carrier, arcing horn, operating pipe of GI 25 mm dia 'B' class, pipe guide, locking arangement, operating lever, fixing of appropriate HT fuse element, nut bolts, etc and making the GOD functional complete all as specified and as directed.

M&L for cable jointing kit for 11 KV(earthed) grade cable for straight through heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sq mm to 95 sq mm complete all as specified and as directed.

Supply and Fix Cable jointing kit for 11 KV ( Earthed) grade cable for Straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of Size 120 to 185 sqmm all as specified and as directed.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable 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 all as specified and as directed.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable for outdoor termination heat shrink type jointing material and accessories complete with jointing suitable for 3 core XLPE armoured Aluminium conductor cable of size 50 to 95 sq mm all as specified and as directed.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable 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 all as specified and as directed.

Supply and fix cable jointing kit for 11 KV(Earthed) grade cable for indoor termination heat shrink type jointing material and accessories complete with jointing suitable for 3 core XLPE armoured Aluminium conductor cable of size 50 sqmm to 95 sq mm all as specified and as directed.

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m, complete all as specified and as directed.

Cutting and trimming of branches n.exc 50 mm dia in size obstructing lumination of street light and touching line all as specified and as directed.

Cleaning around any E/M installations/ pole structures including removing all grass and other vegetations with roots complete all as directed and removing the rubbish to a distance not exceeding 50 m and depositing where directed all as specified and as directed.

M & L for cleaning and preparation of steel surfaces of existing dull painting of transformer outdoor type including radiators, cooling ducts, vent pipes, condensor etc and applying two coats of synthetic enameled paint (heat resistant type) according to to IS colour code by spray machine including writing MES /SM No. in capital letters of suitable size on body for capacity upto 200KVA transformer outdoor/indoor complete all as specified and as directed.

All as per item No: 47 here in before, but capacity above 315 KVA and upto1000 KVA all as specified and as directed.

M & L for Breather unit with superior quality blue colour silica jel and fill up the oil, to maintain the exact value grade for transformer of capacity 200KVA, including taking down unserviceable breather unit complete all as specified and as directed.

All as per item No: 49 here in before, but capacity above 315 KVA and upto1000 KVA all as specified and as directed.

S&F in repairs HV bushing with insulator, studs nut & washers suitable for 11 KV/433V HV side of transformer 100 KVA to 150 KVA all as specified and as directed.

All as per item No 51 here in before, but for 200 KVA to 250 KVA Transformer all as specified and as directed.

All as per item No 51 here in before, but for 315 to 400 KVA Transformer all as specified and as directed.

All as per item No 51 here in before, but for 500 KVA Transformer all as specified and as directed.

All as per item No 51 here in before, but for 630 KVA Transformer all as specified and as directed.

All as per item No 51 here in before, but for 750 KVA Transformer all as specified and as directed.

All as per item No 51 here in before, but for 1000 KVA Transformer all as specified and as directed.

S&F in repairs LV bushing with insulator , studs nut & washers suitable for 11 KV/433V LV side of transformer of Capacity 100KVA to 150 KVA

All as per item No 58 here in before, but for 200 KVA to 250 KVA Transformer all as specified and as directed.

All as per item No 58 here in before, but for 315 to 400 KVA Transformer all as specified and as directed.

All as per item No 58 here in before, but for 500 KVA Transformer all as specified and as directed.

All as per item No 58 here in before, but for 630 KVA Transformer all as specified and as directed.

All as per item No 58 here in before, but for 750 KVA Transformer all as specified and as directed.

All as per item No 58 here in before, but for 1000 KVA Transformer all as specified and as directed.

Servicing and repairng/ carrying out maintenance of 11KV/433V transformer including the following works upto 250 KVA capacity (a) Removing from platform and disconnecting electrical connection from HT and LT side including transporting the transformer to work shop.(b) Dismantling the transformer, drain out transformer oil, lift the cover,coil assembly keep up the assembly in oven upto the preparation of inside chambers by cleaning inside, scraping complete all around old parts of the transformer.(c) M & L for two coats of oil resistance painting internal (inside transformer) over a coat of red oxide primer.(d) Cleaning the core iron sheet laminations asssembly by oil complete,removing the carbon sediments, dust in the coil and core gently without making any damage to coil and core.(e) Re-assembling all dismantled parts including provision of new gasket,nut,bolts,refilling with transformer oil and transporting back to original location including elecric connection testing and commissioning complete all as specified and as directed.

NOTES :- i). Oil filtration,supply of new oil shall be measured separately. ii). All petty parts including nut, bolts, gasket minor weldings are deemed to be included the rate quoted iii). The rate for transport and lifting of transformer by crane should be deemed to include in the rate quoted.

All as per item No 65 here in before, but for 315 to 500 KVA Transformer all as specified and as directed.

All as per item No 65 here in before, but for 630 to 1000 KVA Transformer all as specified and as directed.

M & L for rewinding of transformer of capacity upto 250 KVA, including dismantling, removing the core coil assembly from transformer remove the weak /unserviceable HT coil assembly rewinding with correct gauge super enamelled copper wire including drying,baking etc complete and remove the secondary coil assembly remove the insulation rewind with same coil and re-insulated. Assembling the primary and secondary coil in core, re-assembling the transformer complete refill with transformer oil, install, test and commissioning complete all as specified and as directed.

All as per item No 68 here in before, but for 315 KVA to 500 KVA Transformer all as specified and as directed.

All as per item No 68 here in before, but for 630 KVA to 1000 KVATransformer all as specified and as directed.

S & F D.O fuse elements Rating 11/22 KV capacity 05 Amps all as specified and as directed.

S & F D.O fuse elements Rating 11/22 KV capacity 10 Amps all as specified and as directed.

S & F D.O fuse elements Rating 11/22 KV capacity 20 Amps all as specified and as directed.

S & F D.O fuse elements Rating 11/22 KV capacity 30 Amps all as specified and as directed.

S & F D.O fuse element Rating 11/22 KV capacity 40 Amps all as specified and as directed.

Supply only fibre glass discharge rod 20 feet long suitable for 11/22 KV all as specified and as directed.

M & L for preparation of old cement coated surface, cleaning the surface of the RCC Pole (HT) above the ground level including coping area with 2 coats of exterior emulsion paint over a coat of cement primer after preparation of surface and all as specified and as directed.

M & L for Painting of 4 pole structure including preparation of old cement coated surface, angles, cross arms & painting of RCC poles with two coats of exterior emulsion paint over a coat of Cement primer and painting of angle, cross arms and connecting accessories with one coat of red oxide primer and two coats of aluminium paints all as specified and as directed.

M & L for Painting of 6 pole structure including preparation of old cement coated surface,angles,cross arms & painting of RCC poles with two coats of exterior emulsion paint over a coat of Cement primer and painting of angle, cross arms,and connecting accessories with one coat of red oxide primer and two coats of aluminium paints all as specified and as directed.

M & L for Painting of 8 pole structure including preparation of old cement coated surface,angles,cross arms & painting of RCC poles with two coats of exterior emulsion paint over a coat of Cement primer and painting of angle, cross arms,and connecting accessories with one coat of red oxide primer and two coats of aluminium paints all as specified and as directed.

M&L for Loop insulator, Large size, with overall dimensions 90mmx140mm, clearance of hole 25.5mm suitable for stay assembly complete all as specified and as directed.

M&L for Post / disc / pin insulator of 11 KV capacity carefully and re-fixing the same in the new cross arms / structure including replacement of new hardware such as GI spindle, nut, bolt and washers complete all as specified and as directed.

S&F Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm size all as specified and as directed.

Supply and fixing cable route indicator made out of PCC 1:2:4 of size 20cmx20cmx90cm dully painted with red colour by two coat of enamel paint and writing MES HT cable with white paint on all sides complete all as specified and as directed.

S & F in repairs lightning arrester expulsion type complete with all fittings transmission class,discarge capacity 65 kilo amps, suitable for 11 KV all as specified and as directed.

Carry out materials /machineties , labour for fault finding of 11 KV HT under ground cable length 1.5 KM in case of cable fault such as short circuit/burn out/ earth fault etc including carry out necessary HYPOT test by injecting high voltage upto 50KV complete all as specified and as directed.

S and G Constructions

Prabha Electricals and Communications