81018 Repair Maintenance Servicing of HT LT Panels VCBs Under GE Haddo

Amount

Opening the shutters of VCB 11 KV 400/630 Amps of any make and model, removing the Breaker from the existing position after disconnecting all the connections from the system, and servicing, overhauling of the same, checking of the same for proper operation, spring charge, ensuring control cables are fastened tightly to the terminals, checking any abnormality with PC, VCB, cleaning the surface of the insulators, fasten the bolts, checking and correcting interrupting units, mechanism, linkages etc, fasten the hardware of control wiring, check that the split pins, circlips, dowel pins etc. have not come out and are intact, lubricate the mechanism of moving parts by Castrol all purpose grease or equivalent, check that the contact erosion is within limit including opening of the shutters properly, replacing of the trip catch, roller, holding catch, stopper, close push button, closing cum reassembling, reconnecting of the breaker for smooth functioning complete all as specified and as as directed by engineer in charge.

Decarbonizing/ cleaning complete HT 11KV, 3 phase independent bus bar, bus bar chamber of HT panel, electrification connection complete, HT VCB switch gear arrangement incoming and outgoing installed in sub-stations after removing the complete bus bar spout, circuit spout from the bus bar chamber, cleaning with CTC and ensure proper decarbonizing, re-fixing the same after applying Becktrol (Red) solution to the spout, checking all the connections, tightening the nuts, bolts, thimbles for incoming and outgoing systemcomplete all as specified and as as directed by engineer in charge.

Taking out old unserviceable closing coil assembly 110V DC, S&F closing coil assembly 110V DC for 11 KV VCB complete all as specified and as as directed by engineer in charge.

Taking out unserviceable tripping coil assembly, S&F tripping coil assembly 110V DC for 11KV VCB complete all as specified and as as directed by engineer- in- charge.

M&L for disconnecting and dismantling of old CT from bus bar of 11KV VCB 630Amps, 3phase and Supply & fixing 11 KV single phase resin cast indoor current transformer, copper wound, primary system voltage 11 KV, 50Hz, 200-100/5-5A, as per IEC: 60044-1-2003 complete including CT wiring with primary and secondary injection kit, identification to the base and connecting links to HT OCB/ VCB to match with the system including connections of control supply to metering and protection and testing after completion complete all as specified and as directed.

M&L for disconnecting and dismantling of old PT from bus bar of 11KV VCB 630Amps, 3phase and supply & fixing of PT 11KV/110V of make : instran or eqlnt suitable for 11KV VCB, 630Amps including connections of control supply and testing after completion and applying petrolium jelly for all nuts & bolts complete all as specified and as as directed by engineer in charge.

Calibration of the existing IDMT relays (earth fault realys/ over current relays) fixed on HT 11KV VCB panel, after taking down , setting the relays for the fault levels for primary injection method system as directed by Engineer-in-charge and testing and operation of vacuum circuit breaker after calibration of relays by simulating different types of faults including necessary wiring as required complete all as specified and as as directed by engineer- in- charge. Note :- (i) Primary & secondary injection kit shall be arranged by the contractor (ii) DC Supply for relay testing shall arranged by the contractor. (iii) The contractor shall prepare the relay adjustment and tripping timing chart in the follow up fashion and submit to Engineer-in-Charge

Taking out unserviceable relay of 11KV VCB, S&F earth fault/over current relay suitable for 11KV VCB including setting the relays for fault levels as directed by Engr-in-Charge and testing the operation of VCB after installation of relays by simulating different types of faults complete all as specified and as as directed by engineer- in- charge. Note for item No. 7 & 8 : This work shall be carried out by Competent service engineer from Alstom/Andrew yule/Areva/Kirloskar/CG/ Schneider/ ABB/ Siemens or equilent.

M&L for preperation of Cement concrete floor and painting with Synthetic enamelled paint of Red/Black colour where necessary all as directed by Engr-in-Charge.

S&F in repairs Vacuum interrupter tube Type: WL-34599 C 1 of 800A capacity frequency 50 Hz, STC 25KA for 3 secs 12 KV designed to withstand up to 28/75KV complete all as specified and as directed by Engineer in charge. [Make: Crompton Greaves SR K11821 or equivalent in make: Biecco Lawrie Ltd]

S&F in repairs for HT tape roll of 35mm width, 5mtr length (approx) suitable for 11KV grade complete all as specified and as as directed by engineer in charge.

Taking down the old damaged/ deteriorated synthetic insulating rubber mats from the sub-station, Supply and lay insulating mats 2.5 mm thick for voltage 11 KV for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m, ISI marked complete all as specified and as directed by Engineer in charge.

S&F in repairs for Space Heaters 70W coil element canopy type AC 230V input suitable for HT 11KV VCB panel of any make and capacity, fixed inside the VCB with suitable size of clamps, bolts, nuts including necessary wiring cable connections complete all as specified and as as directed by engineer in charge.

M&L for plain cement concrete 1:4:8 type D2 (using 40mm graded stone aggregate) as in foundations, filling and mass concrete for pole walls underneath 2pole/4pole structure etc. complete all as specified and as as directed by engineer in charge.

M&L for dismantling of unserviceable / defective insulators from 11KV VCB, 3phase and supply & fixing of new insulators as per existing sizeby disconnecting 11KV supply from bus bar & 11KV VCB panels including checking connections of control supply and testing after completion and applying petrolium jelly for all nuts & bolts complete all as specified and as as directed by engineer in charge.

Supply, lay, testing of HT UG cable XLPE insulated (Earthed), screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor 11000 Volts grade of size 3 core 120sq.mm including disconnecting and taking out the existing unserviceable HT cable from trenches complete all as specified and as as directed by engineer in charge. Note: (i) Necessary test results like continuity test, megger tests, shall be submitted to Engineer-in-Charge before the cable is laid. (ii) Excavation earth work will be measured and paid separately.

Supply, lay, testing of HT UG cable XLPE insulated (Earthed), screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor 11000 Volts grade of size 3 core 95sq.mm including disconnecting and taking out the existing unserviceable HT cable from trenches complete all as specified and as as directed by engineer in charge. Note: (i) Necessary test results like continuity test, megger tests, shall be submitted to Engineer-in-Charge before the cable is laid. (ii) Excavation earth work will be measured and paid separately.

Supply, lay, testing of HT UG cable XLPE insulated (Earthed), screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor 11000 Volts grade of size 3 core 185sq.mm including disconnecting and taking out the existing unserviceable HT cable from trenches complete all as specified and as as directed by engineer in charge. Note: (i) Necessary test results like continuity test, megger tests, shall be submitted to Engineer-in-Charge before the cable is laid. (ii) Excavation earth work will be measured and paid separately.

Supply and laying in trenches or in cable ducts, HDPE DWC pipe of size 120mm (OD) x103.5mm (ID) along with connected accessories like couplers, bends, end caps etc. for LT/ HT cable protection complete all as specified and as as directed by engineer in charge.

Supply and laying HDPE DWC pipe of size 77mm (OD) x 63mm (ID) along with connected accessories like couplers, bends, end caps etc. for LT/ HT cable protection complete all as specified and as directed by engineer in charge.

Taking up the corroded/ deteriorated GI pipe from the road crossings/ obstructions and supply & laying GI Pipe 100mm dia medium grade complete all as specified and as as directed by engineer in charge.

Excavating in trenches n. exc. 1.5m wide and n. exc. 1.5m in depth for foundation etc. or for shafts, wells, cesspits, manholes, pier holes etc. n. exc. 10sq.m. on plan and n. exc. 1.5m in depth and getting out in soft/ loose soil complete all as specified and as as directed by engineer in charge.

Excavating in trenches n. exc. 1.5m wide exceeding 1.5m depth and n. exc. 3m in depth for foundation etc. or for shafts, wells, cesspits, manholes, pier holes etc. n. exc. 10sq.m. on plan and exc. 1.5m in depth and getting out in soft/ loose soil complete all as specified and as as directed by engineer in charge.

Returning, filling in including spreading, levelling , watering and well ramming in layers not exc 25cm in any type of soil complete all as specified and as as directed by engineer in charge.

Removing excavated materials to a distance not exc. 50m and depositing where directed at a level n.exc 1.50m above the starting point complete all as specified and as as directed by engineer in charge.

M&L for carrying out servicing of HT 11 KV four pole structure of 11 metre height Steel/ RCC poles including replacement of all perished ACSR conductor (Beaver) of Horizontal bus bar and down conductors for 4 Nos. GOD system on structure, jumpering and binding with aluminium conductor to the post insulators/ pin insulators and providing PVC sleeves to the down conductor with colour code R, Y & B including replacing of all rusted nuts & bolts with new GI nuts & bolts and applying petrolium jelly complete all as specified and as as directed by engineer in charge.

All as per item No.26 herein before but for two pole structure complete all as specified and as as directed by engineer in charge.

S&F Pin type, composite silicon rubber polymeric type insulator150mm height,150mm dia for 11000 volts grade, 5 kN with ECR glass rod, forged steel top and bottom, silicon rubber housing and weather sheds, including one galvanized mild steel spindle, galvanized iron washer, spring and one galvanized iron nut all as specified and as directed including taking down existing unserviceable insulator complete all as specified and as as directed by engineer in charge.

M&L for Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of synthetic enamel paint complete including dismantling existing rusted/ unserviceable cross arms complete all as specified and as as directed by engineer in charge.

S&F long rod insulator, composite silicon rubber polymeric type 290mm height, 100mm dia for 11000 volts grade, 45 kN with ECR glass rod, forged steel tongue and cleaves, silicon rubber housing and weather sheds all as specified and as directed including taking down existing unserviceable disc type insulator complete all as specified and as as directed by engineer in charge.

S&F Gang operated Air break switch (GOD) HT 11 KV of 400 Amps rating, out door type suitable for vertical mounting, fixed type for 4 pole/ 2 pole structure complete with 3 Nos. silicon rubber polymeric insulator per phase including taking down old unserviceable HT 11 KV grade triple pole gang operated Air break switch from 4 pole/ 2 pole structure complete all as specified and as as directed by engineer in charge.

S&F Single phase silicon rubber polymeric insulator type drop out fuse unit 11 KV, 200 Amps rating for 4 pole/ 2 pole structure including taking down damaged / un serviceable HT 11 KV drop out fuse unit from the 4 pole/ 2 pole structure complete all as specified and as as directed by engineer in charge.

M&L Lightning arresters expulsion/silicon type as per requirement suitable for 11000 volts complete with all fittings, transmission class, discharge capacity 65 kilo amp including taking down damaged / un serviceable Lightning arresters, expulsion type complete with all fittings complete all as specified and as as directed by engineer in charge.

M&L for PCC 1:2:4 type B1 (using 20mm graded stone aggregate) as in coping of pole including use & waste of necessary form work including weathering, slightly rounded or chamfered angles and throating, complete all as specified and as as directed by engineer in charge.

M&L for plain cement concrete 1:3:6 type C2 (using 40mm graded stone aggregate) as in foundations, filling and mass concrete for pole walls underneath 2pole/4pole structure, feeder pillar boxes etc. complete all as specified and as as directed by engineer in charge.

M&L for Earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized earth strip of 32X6mm size by means of bolts, nuts, check nuts and washers of galvanized iron or steel and connected from earth plate electrode to main switch board/ earthing test point including and protected by 40mm dia medium grade GI pipe, watering arrangement with PCC 1:3:6 type C1 chamber, MS funnel, wire gauge, 50mm thick precast RCC cover in Type B1, including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to a distance n.exc 50m, charcoal and salt complete all as shown in electrical plate No. 3 of Schedule Part-I 2009 and connected to earthing test point all as specified or indicated and testing on completion complete all as specified and as as directed by engineer in charge.

S&F GI earth strip of size 32x6mm laid in trench or fixed to wall/ pole with necessary clamps and nuts, bolts etc. including taking out unserviceable earthing strip complete all as specified and as as directed by engineer in charge.

M&L for Earthing complete with copper earth plate electrode 60cm x 60cm x 3.15mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to copper earth strip of 20X3mm size by means of brazing/welding with copper conductor and connected from earth plate electrode to main switch board/ earthing test point including and protected by 40mm dia medium grade GI pipe, watering arrangement with PCC 1:3:6 type C1 chamber, MS funnel, wire gauge, 50mm thick precast RCC cover in Type B1, including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to a distance n.exc 50m, charcoal and salt complete all as shown in electrical plate No. 3 of Schedule Part-I 2009 and connected to earthing test point and testing on completion complete all as specified and as as directed by engineer in charge.

S&F copper earth strip of size 20x3mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required, fixed with necessary clamps and brazing/welding with copper conductor etc. including taking out unserviceable strip complete all as specified and as as directed by engineer in charge.

M&L for isolating, cutting, removing the existing damaged end termination and S&F outdoor end termination, cold shrinkable type suitable for HT UG cable, XLPE insulated of size 3 core x 70 to 95 sq.mm, 11KV grade including preparation complete all as specified and as as directed by engineer in charge.

All as per item No. 40 here-in-before but for HT UG cable of size 3 core x 120 to 240 sq.mm, 11KV grade complete all as specified and as as directed by engineer in charge.

M&L for isolating, cutting, removing the existing damaged end termination and S&F indoor end termination, cold shrinkable type suitable for HT UG cable, XLPE insulated of size 3 core x 70 to 95 sq.mm, 11KV grade including preparation complete all as specified and as as directed by engineer in charge.

All as per item No. 42 here-in-before but for HT UG cable of size 3 core x 120 to 240 sq.mm, 11KV grade complete all as specified and as as directed by engineer in charge.

M&L for cutting, removing the existing damaged joint and S&F straight through joint cold shrinkable type suitable for HT UG cable, XLPE insulated of size 3 core 70sqmm to 95 sq.mm, 11KV grade including preparation and necessary excavation as required at site complete all as specified and as as directed by engineer in charge.

All as per item No. 44 here-in-before but for HT UG cable of size 3 core 120 to 240 sq.mm, 11KV grade complete all as specified and as as directed by engineer in charge.

Supply and fix in repairs silver painted danger notice plate of 1.6mm thick mild steel sheet, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with silver painted MS clamps, bolts and nuts of approved size, for HT 25x20cm size complete all as specified and as as directed by engineer in charge.

M&L for Disconnecting and removing old HT UG cables of size 3core 95 to 185sq mm at both ends and finding the fault location with fault locating machine of 11KV system including repairs with suitable size of HT 11KV Straight through joint by excavation at fault location and re-connecting after making HT UG cable serviceable by checking with HT Megger including making good disturbed surfaces complete all as specified and as as directed by engineer in charge. Note :(a) Cost for excavation, earth work and HT 11KV Straight through joint shall be measured and paid separately.

Supply & install RCC pole 11.0 metres long, 152x152mm at top and 152x260mm at bottom, class 9 including painting with cement based paint of approved quality, length 11.00 mtr long 410 SP -55 for stud pole including taking down old pole complete all as specified and directed.

S&F heat shrinkable sleeves suitable for 11KV grade 95 to 240Sqmm HT UG cable including disconnecting HT UG cable from VCB/Transformer/2pole structure/4pole structure and re-connection after completion complete all as specified and directed.

Taking down the damaged fuse wire and S&F copper fuse wire of any guage/rating of existing size complete all as specified and as as directed by engineer in charge.

M&L for graded stone aggregate of 63mm size, spread and leveled around 4 pole/ 2 pole structure/ transformer yard complete all as specified and as as directed by engineer- in- charge.

Material & labour for laying of chequered plates of any thickness by cutting / making in to the shape providing necessary angular supports and handles with 6 mm dia rod as per the site condition for cable trenches of various sub-stations alongwith painting of one coat of synthetic enamel over a coat of two coats of redoxide including taking out old unserviceable chequered plates all as specified and directed.

Dismantling of ACSR or AAC conductors complete all as specified and directed.

S&F Aluminium conductor steel reinforced (ACSR) conductor of any type and size for jumpers, bus connection to 2pole/4pole/6pole structures complete all as specified and directed.

S&F in repairs epoxy insulators suitable for conical/ single bus bar system for LT 415 volts panel board/ pillar box/ cope point, fixed to bus chamber for bus bar support including nuts, bolts, washers complete all as specified and as directed by Engineer in charge.

M&L for preparation of painting for steel surfaces of 4 pole structure including brackets, clamps, channels and cross arms by cleaning of oils, lubricants, grease etc. complete above PCC coping and applying two coats of aluminium paint on surfaces 1m above PCC coping, applying two coats of synthetic enamel paint in zebra pattern with black & yellow colour combination up to 1m height above PCC coping; writing MES No. of poles (Number size shall be 25mm and lettering shall be 40mm) complete including applying two coats of white wash on exposed concrete surfaces of coping to poles duly preparing the surfaces complete including cleaning/clearing of all tree branches & vegitation 05 meters around the structure all as specified and as directed by Engineer in charge.

All as per item No. 56 herein before but for two pole structure complete all as specified and as directed by Engineer in charge.

M&L for preparation of old decorated surfaces of walls of transformer plinth/4 pole or 2pole structure yard by scraping and wire brushing and applying one coat of cement based paint complete all as specified and as directed by Engineer in charge.

M&L for cable route indicator made of cast iron disc 200mm dia,12mm thick with inscription casting as HT cable fixed to MS angle of size 40x40x6mm, 600mm long with bolts & nuts, duly grouted in PCC 1: 3: 6, type C2 complete including necessary excavation and earth work including taking up existing unserviceable indicators complete all as specified and as directed by Engineer in charge.

M&L for isolating the HT supply of transformer, disconnecting HT and LT Cable connections of transformer by opening clamps, bus bar extension and isolating the cables from transformer, outdoor of 100 to 2000 KVA capacities, checking of transformer pressure release valve, oil condition and carrying out tests such as HV/LV megger test, ratio test, magnetic balance test, short circuit test including opening the inspection cover/top lid after drain out of oil as required to check the lead condition from winding to bus rods including necessary soldering/jointing, fixing of new sleeves etc, and charging of transformer and making all necessary connections / assembly & control circuits all as specified and directed.

Cutting bushes, levelling the area around E/M installation such as sub stations, 4/2 pole structure etc. including surface excavation not exceeding 30 cm deep and averaging 15 cm deep and getting out roots, jungles etc. throw away not less than 50 mtr from the site and making good all as specified and as directed

M&L for fabrication/repair of HT/LT panel door covers made out MS Sheet 3mm thick necessary folding jointing as suitable at site with existing panel board indoor/outdoor including necessary welding, hinges and supports including taking down existing old rusted panel door covers complete all as specified and as directed. Note : Transport charges for electric/gas welding machine from workshop to site and back shall be included in the rate quoted.

Cutting and cleaning the tree branches around the HT/LT poles/Over Head line/ 2pole/4pole structure upto 3 mtr from either side of pole/ over head line and clear the site and throw away the branches to a distance all as specified and as directed by Engineer-in-charge

M&L for writing SM No./MES No. on plants and machinery/ Cope boxe No and feeding location with synthetic enamel paint/ stickering with letters of height 8cm complete all as specified and as directed by Engineer in charge.

Cutting the existing road surface/PCC/ foot path (approx 60cm x 50cm) for laying of HT/LT cables including excavation of trenches, refurming filling, removal of soil in any type of soil, including making good for disturbed surfaces with PCC 1:2:4 type B1 using 20mm graded stone aggregate, use & waste of necessary form work including watering complete all as specified and directed.

Disconnecting and taking down unserviceable LT current transformer from existing bus bar/ LT cable of any sizes including disconnecting of cable terminals in LT panel and supply and fix CTs of Ratio 2000 / 5A to 4000 / 5 Amps, 415 volts, 50 Hz including cable connections, lugs, brass nut & bolts complete all as specified and as directed.

Disconnecting and taking down unserviceable CTs from existing bus bar/ LT cable of any sizes including disconnecting of cable terminals in LT panel and supply and fix CTs of Ratio 800 / 5Amps to 1600/5 Amps, 415 volts, 50 Hz including cable connections, lugs, brass nut & bolts complete all as specified and as directed by Engineer in charge.

Disconnecting and taking down unserviceable CTs from existing bus bar/ LT cable of any sizes including disconnecting of cable terminals in LT panel and supply and fix CTs of Ratio 200 / 5Amps to 400/5 Amps, 415 volts, 50 Hz including cable connections, lugs, brass nut & bolts complete all as specified and as directed by Engineer in charge.

SKV Engineering

C KUMAR

PTech Engineers