REPAIR/MAINT OF HT VCBs, RMUs, SF6 BREAKERS, TRANSFORMERS, HT OVERHEAD LINES AND ASSOCIATED WORKS AT CPH AREA UNDER GE UTILITY UDHAMPUR

Amount

Drawing out the SF 6 / RMU from the Circuit system of 11 KV , Servicing the Circuit breaker by checking the following parameters for proper functioning using CTC for clear off the carbon deposited :- a) Checking / fault diagnisis of Isolator & earth switch mechanism slips b) Checking of Gas inside the tank c) Checking the functionality of relay protection system d) Checking the Mechanism of isolator module and vcb module e) Checking the voltage presence indicator f) Checking the comlete control wiring for tripping/ closing / indication system Necessary spare parts shall be measured as Supply only in following items.The labour charges are deemed to be included in the quoted unit rate for this item. Note : a) Servicing shall be performed by authorised service personnel of OEM i.e M/s ABB b) Servicing certficate shall be provided to engineer-in-charge c) Replacement of minor spares like Push button lever, Green push button, red push buttons and shaft for operating handles are inclusive of rate quoted by tenderer

Supply only Spare parts of SF6/RMUs 630Amperes ( Make of OEM : M/s ABB) :-

3PKE Mechanism w/o hex rod for isolator module

2 PA Mechanism w/o hex rod for VCB Module

ASHIDA ADR241S NANO Relay

Voltage Presence Indictor ( Capacitor unit & Chord )

Gas for RMU Tank ( 5 Kg / Can )

CT 200-100/1A 5P10 for protection

CT 200-100/1a, Ci.1 for metering

V module push button bracket

Taking down the VCBs of capacities (630-800 ampers) from the VCB Panel. Maintenance and complete overhauling of 11 KV,3 phase, VCB including disassembling of operating mechanism parts, well cleaning with petrol & CRC-226 including reassembling, panel board, main bus bar, de-carbonizing all joints bus bar, CTs, PTs, spouts metal parts and making VCB perfect operating in manual and electric mode including all routine and preventive maintenance complete and replacing unserviceable parts and components complete, all as specified and directed by Engr-in-Charge. make of VCB:- Crompton Note:- Spare parts will be measured and paid seperately as supply only under respective items. The labour charges deemed to be included in the unit rate quoted for this item.

Supply only Spare parts of VCBs ( Make : As Suitability for VCB Crompton Greaves )

Current transformer of capacities 400/200/5/5A

Current transformer of capacities 200/100/5/5A

Circuit Spouts

Bus Spouts

Vacum Interrupters

Tripping / Closing Coils

Painting to steel tubular swaged pole of Overhead lines (11 Mtr long) complete with and including comprising the following works :- (a) Scraping out wornout old paint and making the surface smooth. (b) Painting the pole and all MS work mounted on pole with two coats of synthetic enameled paint (Aluminium shade) as directed by Engr-in-charge. (c ) Forming five nos coloured bands at lower portion of pole each 300 mm wide alternatively with white and black colour (or any colour as approved by Engr-in-charge) synthetic enameled paint and marking pole no. with black and white paint complete all as specified. Note: Before commencement of painting work the contractor has to take shut down in writing from Sub-station.

M&L for ACSR conductor of required size for Over head lines on poles including streching, tightining of poles insulator with winding wire of suitable size with insulator/streching of ACSR conductor all as specified and directed by Engr-in-Charge.

Supply, installation and testing HT gang operated air break switch 11 KV, 3 pole vertically mounted type, mechanically operated, mounted on steel frame with operating mechanism, worked from ground level for current upto 200 Amps with drop out fuse elements of required capacity, GOD/switch having 100 MVA rating at 11 KV and 12 insulators suitable for 11 KV, 50 C/s including mounting on HT poles and necessary electrical connections complete all as specified and directed by Engr-in-Charge.

Supply, installation and testing Lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp,11000 Volts complete all as specified.

M&L for cross arms of any sizes with drilled hole (hot and cold etc) in position M.S. work including MS nut and bolts, washers and two coats of aluminium paint over one coat of red oxide primer, all as specified and directed by Engr-in-Charge.

M&L for stay assembly for steel tubular poles comprising of 7/10 SWG galvanized MS stranded stay wire of required length, minimum tensile strength 70 Kg/mm (grade-2 quality) fixed to pole with and including FI clamps bolts, nuts, washers, galvanized steel stay rod 20 mm dia 180 cm long bow 400x14mm nuts/bolts, washers all galvanized and two nos thimble, loop insulator of size 90x140mm vitreous, clearance dia of hole 16mm, stayplate of size 230x230x6mm including necessary excavation and earth work PCC 1:3:6 type C-2 using 40mm graded crushed stone aggregate in foundation and disposal of surplus spoil, upto 50 M all as specified and shown in plate No 1 of MES SSR Pt -I, complete all as specified and directed by Engr-in-Charge.

Dehydration and filteration of existing serviceable transformer oil at site or at factory permisses of any type,any capacity,any rating transformers till it achieves the required dielectric strength upto 50 KV at 2.5mm gap using dehydration plant complete, all as specified and directed by Engr-in-Charge.

Topping up of transformer oil of good quality having not less than 50 KV dielectric strength,flash point not less than 135 degree C, having low viscosity for filing complete, complete as per IS 335 of 1983 all as specified and directed by Engr-in-Charge. Note: Draining out old unserviceable oil & filling process is deemed to be included in quoted rate in respsctive item

Taking proper shut down in writing and disconnecting the LT and HT electric mains from transformer of capacity 63 KVA to 500 KVA, removing the lid/cover for inspection to facilitate minor repairs at site , replacement of HV/LV bushings of aluminium of required current rating , draining out the transformer oil reassembling the transformer, refilling the transformer oil (new or old) installing, commissioning and testing at site complete, all as specified and directed by Engr-in-Charge.

Shifting of transformer of capaicites (63KVA-500KVA) from the Premises of ( CPH Premises) to workshop for necessary repairs. Reshifting the transformer Post repairs from workshop to CPH (Premises) with help of hydra/crane/any other lifting devices .

M&L for rewinding of HT/LT coil conforming to the original winding of the transformer of any make/capacity with super enamelled cooper wire/strip or DPC copper wire of appropriate gauge and turns including allied materials complete, all as specified and directed by Engr-in-Charge.

S&F Steel tubular swaged pole erected to truly vertical or planted as strut complete with 6 mm thick MS Base plate,welded to pole,finial taper cap, bolts, nuts, screws,11 Mtr long, type 410 SP - 55,including drilling of holes of required size for fixing of cross arms,painting the exposed surfaces of pole with two coats of aluminium paint over a coat of red oxide zinc chrome primer and with two coats of black bituminous paint on the portion embedded in concrete, and marking pole no. with black paint at suitable height incl taking down of existing damaged pole, complete all as specified and directed by Engr-in-Charge. Note:- The earthwork, PCC foundation, steel clamps, MS Cross arms & bracing of angle iron etc will be measured and paid separately under relevant items of Sch ‘A’

Plain cement concrete 1:3:6 type C-2 (using 40mm graded stone aggregate) as in foundations filling and mass concrete complete, all as specified and directed by Engr-in-Charge.

Plain cement concrete 1:2:4 type B-1(using 20 mm graded stone aggregate) for coping of poles complete including necessary form work, all as specified and directed by Engr-in-Charge.

M&L for Cable 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 95 sqmm complete, all as specified and directed by Engr-in-Charge.

Description all as per Srl item No 19 above but size of cable 120 to 185 sqmm.

M&L for Cable jointing kit for 11 KV (Earthed) grade cable for heat shrinkable termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm complete, all as specified and directed by Engr-in-Charge.

Description all as per Srl item No 21 above but size of cable 120 to 185 sqmm.

Taking down the unserviceable / moistured HT Cable from the under ground system. Supply , lay test and commissiong of HT Cable XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured electric power cable ( heavy duty) with aluminium conductor , 11000 volts earthed grade cross sectional area as illustrated below

120sq.mm, 3 core

150sq.mm, 3 core

185sq.mm, 3 core

240sq.mm, 3 core

Excavating in trenches, n exc 1.5 m wide and n.exc 1.5 m in depth; for laying cables/pipes,foundations of poles/stays etc. n exc 10 sq m area on plan and n exc 1.5 m in depth in any type of soil and getting out soil, complete all as specified and as directed by Engr-in-Charge.

Returning filling in (soil) including spreading leveling watering and well ramming in layers not exceeding 25cm thick, all as specified.

Removal of excavated material (soil) to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5m above the starting point all as specified.

Supply and lay DWC Pipe ( Double wall corruguated) confirming to IS: 14930(Part-II) along with necessary Snap fit Coupler for interconnection Suitable for HT Cable of size 300/240 sq.mm (90X 76 mm as diameter) all as specified & directed by Engineer in charge .

Supply and lay DWC Pipe ( Double wall corruguated) confirming to IS: 14930(Part-II) along with necessary Snap fit Coupler for interconnection Suitable for HT Cable of size 185/120sq.mm (77X63 mm as diameter) all as specified & directed by Engineer in charge.

Taking down the unserviceable rubber mats from the substation . Supply and laying synthetic rubber insulated mats 2.5 mm thick for voltage up to 11kv electrical purpose as per IS 15652-2006 suitable for electric shock safety of sizes 2 x1 m, complete all as specified and as directed.

Earthing complete with copper earth plate electrode 60 cm x 60 cm x 3.15 mm thick buried directly in ground, (Earth pit not less than 2.25 mtr deep below ground level) with top edge of plate not less than 1.5 mtr below normal ground level, connected to copper earth strip 32x6 mm size by means of bolts, nuts, check nuts and washers of galvanized standard iron or steel all as specified or indicated in electrical plate No 3 of MES Part-I, including testing on completion including the material and labour and taking out old unserviceable earthing and comprising the following :- (a) Excavation and earth work for drilling hole for electrode in any type of soil. (b) PCC pit in cement concrete 1:2:4 type B-1. (c) Precast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire fabric weighing not less than 4 Kg/Sqm. (d) Funnel with watering pipe of GI 20 mm nominal bore medium grade and copper lugs etc all as specified. (e) 32 mm nominal bore light grade GI protection pipe & earthing strip 7.5 mtr long . (f) Requisite quantity of common salt and charcoal. (g) Testing of earthing. Note : On testing after completion of earthing, if the desired earth resistance is not obtained, the earthing will be re-done by the contractor at his own risk and cost to the entire satisfaction of the Engineer-in-Charge.

vijay kumar gupta and co

proach associates

FANGALIA TRADERS