REPAIR/REPLACEMENT TO HT OVERHEAD LINES, UG CABLES AND MAINTENANCE OF E/M INSTALLATION AT DOMESTIC AND TECHNICAL AREA AT AF STATION BHUJ

Amount

M & L for taking down carefully Transformer / Isolation transformer of capacity up to 750 KVA, any make, any type from pole / plinth/ base; disconnecting HT & LT side connections, earthing strip of transformer, supporting angles, cross arm; shifting / transporting transformer carefully from the site to the workshop; opening the top cover of the transformer, draining of oil from the transformer, lifting the core, complete, taking out defective coils from the core, cleaning the tank and reassembling the transformer after carrying out the repairs, ovening the complete unit till to get desired megger value; transporting, returning back to the site, installing, re-commissioning and testing of the transformer at its original place, connecting up HT & LT sides, earthings, supports / cross arms etc all as directed by Engineer-In-Charge. Note: (i) Spares, Rewinding of transformer,reinsulating & heating if required will be measured and paid separately under respective BOQ items (ii) T&P required , rent of vehicle, crane, labour involved for shifting, lifting are deemed to be included in the quoted rate.

S & F in replacement top cover gasket made up of 5 mm thick cork sheet.

S & F in replacement HT bushing, porcelain vitreous brown body suitable for 11 KV Indoor/outdoor suitable upto 750 KVA capacity Transformer as per IS 3347.

S & F in replacement LT bushing, porcelain vitreous brown body 433 V grade Indoor/outdoor suitable upto 750 KVA capacity Transformer as per IS 3347.

S & F in replacement HT brass studs,Nuts, Chucknuts along with washers complete with rubber parts for one terminal 11 KV Indoor/outdoor suitable upto 750 KVA capacity Transformer.

S & F in replacement LT brass studs, nuts,chuknuts along with washers for one terminal 433 Volts grade Indoor/outdoor suitable upto 750 KVA capacity transformers.

S & F in replacement breather assembly complete with silica GEL as required at site.

S & F in replacement Temp level indicator including its bolts, nuts, gasket etc complete.

Rewinding old / burnt out HT coils by super enameled copper winding wire / strips of appropriate size of super quality (as per existing material & size of transformer coils) including, insulating, tanking, ovening, keeping coils in position, etc for transformer up to 750 KVA.

Re-insulation of heated / weak LV coils of transformer by super quality insulating materials, ovening, tanking , etc complete to improve IR value etc complete all as directed by EIC.

M & L for Dehydration and filtration of transformer oil / Voltage stabilizer / VLE switch & Isolation Transformer oil by using mobile dehydration and filtration plant of capacity of 12000LPH,heating and filtering the transformer oil to be carried out per minimum four hours till the di- electric strength reaches value of 45 KV or above in one minute, for any capacity of transformer/Voltage stabilizer/VLE Switch & Isolation Transformer (25 to 500 KVA/ VLE SWITCHES) Note:- Cost of T&P required for dehydration and filteration should be deemed to be included in the quoted rate. No extra cost will be permissible to the contractor in this regard.

Supply and topping / replacement of transformer oil having di-electric strength above 50 KV/mm of Transformer chamber and conservator with new transformer oil up to the required level in any type and capacity of transformer / Voltage stabilizer / OCB all as directed by EIC. Note : Transformer oil brought by the contractor at site shall be in seal packing drum having ISI mark as per IS 335/1983 of make Savita, Asian or equivalent. Per inspection of sealed drum will be carried out by Engineer-In-Charge.

M & L for servicing of GOD assembly, cleaning the rusted surfaces of fixed and moving contacts, applying grease, replacing the wornout jumper clamps / jumpers upto 2mtr length, nuts/bolts etc, checking for proper alignment and smooth working of GOD all as directed. Note:- (i) The items for replacement of GOD, DO, HT joints etc will be measured and paid separately, if required)

S & F in replacement Cable 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 sizes 120 Sqmm 3 core all as specified and directed.

All as per item No.14 above but 95 Sqmm 3 core

S & F in replacement 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 sizes 120 Sqmm 3 core all as specified and directed.

All as per item No.16 above but 95 Sqmm 3 core

S & F in replacement 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 sizes 120 Sqmm 3 core all as specified and directed.

All as per item No.18 above but 95 Sqmm 3 core

S & F in replacement of Potential Transformer with enclosure and accessories 11 KV / 110 V 50Hz of VCB as required at site, all as directed by EIC. Make: CG/ ABB / L&T or equivalent

S & F in replacement of Current Transformer with enclosure and accessories of VCB upto 200/5 Amps all as directed by EIC.

M & L for Maintenance / Servicing of Servo Voltage stabilizer by OEM rep of capacity upto 750 KVA 3 phase 440 volts 50 Hz including cleaning, checking oil level and brazing / soldering if required, of servo Voltage Stabilizer including replacement of gear assembly (fiber/metallic) as required at site, checking each phase voltage, Testing and commissioning complete all as directed. Note: Replacement of spare parts if required shall be paid separately.

S & F in replacement of Electronic circuit card (PCB) in servo Voltage stabilizers upto 750 KVA capacity all as specified and as directed by EIC.

S & F in replacement of Voltmeter (Digital) input impedance 2m (0.5 to 1.05% accuracy), size (0 - 500 V) as required at site all as specified and as directed by EIC.

S & F in replacement of Amp meter with CT (Digital) size as reqd at site (0 - 500A) with accuracy +/- 1% all as specified and as directed by EIC.

S & F in replacement of Trigger Transformer of any capacity suitable upto 750KVA servo voltage stabilizer all as specified and as directed by EIC.

S & F in replacement of Microcontroller three phase (3ct sencing) APFC relay IPFC CS 1003, 8 steps incl LCD type with dual colour backlight aux supply 90-550 VAC configure alarm settings, supports intelligent algorithm, alarm indoication on display, programmable fan control, Dual password protection, automatic CT polarity detection, NTC temp sensor, Power factor measurment range:0.8 lag to 0.8 lead & Automatically switches between various capacitive bank complete all as specified and directed. Make Siemens / Schneider / L&T / Havells or equivalent.

S & F in replacement of Capacitor duty Contactor with auxilliary contacts 1NO+1NC, 3 pole AC, upto 30 Amps capacity all as specified and directed. Make- Indoasian /L&T / Havells or equivalent .

S & F in replacement heavy duty capacitors for non linear load 440 Volts AC, 3 phase, 50 Hz delta connection for APFC panel,Capacitor of size 3 Ph 2 KVAr Type of insulatinon material is to be mica/epoxy/oil or as per site requirement. Make-Havells /L&T / Siemens.

All as per item No.29 above but Capacitor of size 3 Ph 5 KVAr

All as per item No.29 above but Capacitor of size 3 Ph 10 KVAr

All as per item No.29 above but Capacitor of size 3 Ph 20 KVAr

M & L for Shifting of Transformer / Isolation Transformer / Voltage stabilizer upto 750 KVA capacity from one location to other location of any capacity including removing the existing HT/LT connection of any type transformer and transporting the same to desired location within Airforce stn bhuj area including 308 TRU (mundra road). The same installing connecting HT/LT cables, Earthing testing and commissioning all as directed EIC.

M & L for scrapping of old painted/oily surface of transformer including all nut bolts, channels by wire brush with cotton waste and painting with two coat of approved synthetic enamel paint as per the existing paint by spray gun and writing SM No all as per ground condition as directed and specified by Engr-in –charge. Note:- Shut down of power supply will be taken by the contractor and entry has to be made in shut down register at MRS prior to start of the work and clear shut down after completion of job.

Taking out unserviceable / serviceable HT cables from excavated trenches, ducts, wall, pole etc including removing cable covers, sand, cable joints, pipes, clamps etc, taking out old serviceable cables for reuse and removing unserviceable cables, covers etc, for the sizes of cables 95 /120Sqmm all as directed by Engr- in -charge.

Supply, laying, jointing and testing of HT 11 KV 3 core 95 sqmm of size cable in trenches/fixed to poles/wall, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (HT), heavy duty with aluminium conductor, 11000 volts (earthed) grade all as specified and directed by Engr-In-Charge. Note: Excavation, earthwork, cable joints, sand coushing & cable cover will be measured and paid separately if required.

Relaying only in replcement of HT 11 KV 3 core 95/120 Sqmm cable in trenches/fixed to poles/wall, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (HT), heavy duty with aluminium conductor, 11000 volts (earthed) grade 95/120 Sqmm x 3 core all as specified and directed by EIC.

Excavation in trenches not exc. 1.5m wide and not exc. 1.5m in depth for foundation etc or for shafts, wells, cesspits, manholes pier holes etc not exc. 10sqm on plan and not exc 1.5m in depth and getting out in soft /loose soil complete all as specified and as directed by Engineer-in-Charge.

Returning filling in soil and including spreading leveling watering and well ramming in layers n.exc. 25 cm thick complete all as specified and as directed

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

M & L for providing dry river sand as in cushioning to UG cables including gently punning down of sand in layers all as directed and specified. Note : For measurement purpose punned thickness shall be considered.

M & L for unreinforced precast concrete cable covers CLASS HV type I, flat size 300 x 180 x 40 mm laid transverse to cable all as directed and specified.

S & F in replacement of 100 mm bore GI tubing, light grade for encasing cables for mechanical protection, laid under plinth/floors/ roads/ path /culverts or fixed on walls/on poles by means of MS clamps with necessary bolts, nuts and washers complete all as specified and directed.

All as per item No.43 above but 80 mm bore

Boring of holes under road, pavement, hard standing by trenchless technology using ultra sounding technique and necessary machine including supply and laying HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure.

M & L for erection of Precast HT cable route / cable path indicator, made out of PCC 1:2:4, type Bo,12.5 mm graded stone aggregates of size 100 Cm (Height) x 12 Cm (Width) x 8 Cm (Thichness), painted with orange colour lettering synthetic paint and letters 4 inch "DANGER, HT 11 KV CABLE" to be written with black colour lettering synthetic paint and embedded in PCC block 1:3:6 type C2 (using 40mm graded aggregate) of size 15cm x 15cm x 20cm including necessary excavation for PCC block, placed at interval of every 30M or as directed, complete all as specified and as directed by Engr-in-Charge.

Supply, fabricate, test and commisioning in replacement of factory made HT out door feeder pillar box Single door of size 1000x1000x600 mm including locking arrengment cubical type dust proof , weather proof , vermin proof asthetically designed, having atleast IP-65 degree of ingress protection , fabricated from 3.15 mm thick CRCA sheet with front & rear opening including bus bar chamber , continuous GI strip earth bus bar , 3 strips of copper bus bar of 400 Amps capacity, insulated color sleaves, procelain/epoxy insulators, rail channels cable alloy, danger notice board (11000 Volt) including made out of 14 guage MS sheet over angle iron frame of size 50x50x6mm , 60 cm grouted in ground floor and 60 cm above GL including necessary excavation ,foundation .PCC etc complete duly powder coated of approved color all as directed.

Supplying and laying synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 KV of size 2mx1m for electric purpose as per IS:15652-2006 (superseding IS:5424) suitable for electrical shock safety.

S & F in replacement of procelain/epoxy insulators used in HT feeder pillar boxes as per sample all as specified and as directed.

S & F including Stretching binding of ACSR conductor on poles to the insulator by means of necessary binding wires 16 SWG aluminium wire complete with necessary jumpers and connections, complete all as specified and as directed.

S & F pin type Porcelain, vitrous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150mm dia for 11000 volts grade

S & F Disc type, porcelain, vitreous, white, brown or green insulator including galvanised mild steel straps, washers, insulator bolts, washers and nuts as under Working pressure 11000 volts,145 mm height, 255 mm dia ball and socket type two in series assembly for tension with tension clamps for conductors all as specified and directed.

S & F danger boards notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colur and fixed with M.S clamps, bolts and nuts of approved size, for HT 25 X20 cm size.

M & L for making Platform for Transformer using Block masonary of size 2.5X2.5X1.5m in cement mortar 1:6m with PCC foundation 1:4:8 type D2 using 40 mm graded stone aggregate, PCC 1:2:4, type B-1 using 20 mm graded stone aggregate, 20 cm thick coping over brick work, plastering to exposed surfaces of brick work with cement mortar 1:4, 15mm thick including finishing of surface, required excavation and earthwork complete all as specified and directed by Engr-in-charge. Note: Size / strength of Platform to be maintained as per Transformer capacity, minimum height of the platform from ground 1.2m and 30 cm below ground level as foundation all as specified and as directed by EIC.

M & L for earthing complete with copper earth plate electrode 60x60x3.15mm thick burried directly in ground (earth pit not less than 2.25 mtrs deep below normal ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to copper strip of 20x3mm by means of bolts, nuts check nuts and GI washers earth plate surrounded by picked layer of coal dust and common salt 15cm thick all around bottom and top and watering pipe 20mm bore of GI pipe medium bore GI pipe light grade connected to funnel heavy wire mesh for watering purpose and 32mm bore GI pipe light grade for protection of galvanised earth wire from earth plate upto 7.5 metre and connecting to, main switch board including 10mm thick cast iron cover with angle iron frame and PCC 1:2:4 type B-I for concrete pit, including necessary excavation and earth works etc, as shown in electrical plate No 5 of SSR Part - I of 1991 and testing on completion all as specified. Note: PCC chamber shall be constructed at least 1.5m away from earth pit. Pipe for watering shall be provided in slanting manner.

M & L for complete cleaning of the internal & external parts of HT panel; checking & testing of all the components of the panel for cable insulation, lugs, connections and the like; replacement of & including provision of minor parts like lugs, insulation tape, nuts bolts, connectors and the like as directed by Engineer-in-Charge; replacement and / or welding of existing damaged hinges of the panel; preparation of old painted surfaces (internal & external) of the panel, complete removal of existing paint using emry paper grade 220, by sanding and scrubbing, application of corrosion resistant primer by sprayers, applying hammer finish metal paint using sprayers in two coats and till shining surfaces are obtained; application of two coats of epoxy black paint on panel frames, with locking arrangement including lock complete all as directed by Engineer-in-Charge.

S & F in replacement Prestressed concrete pole, 11.0 metres long. 152mm x 152mm at top and 152mm x 260mm at bottom, class 9.

M & L for Cleaning the Sub Stations area by trimming tree branches, removing unwanted growth complete all as specified and as directed by Engr-in-Charge. Job shall include thorough cleaning of 40 Substations. Cleaning shall be done once in a Quarter for all 40 Substations. Rates of cleaning the Substation shall include the trimming of tree branches, removing unwanted vegetation and transporting the same to a distance not less tha 200m then spraying of herbicide in sub stn. as directed by Engr-in- Charge Note : Contractor's supervisor with sufficient labours and an electrician alongwith tools and plants will report to JE in the morning for taking over site of cleaning as and when directed by Engr-in-charge. The cleaning shall be done upto the satisfaction of Engr-in-charge.

M & L for Locating of fault in HT 11 KV cable of any size laid in trenches by hiring of electronic fault locating machine for finding out the fault of defective 11 KV HT cable at different locations including excavation of trenches for each fault at site making sufficient space for working inside the trenches for jointing the cable and further excavation and refilling after connection and testing of straight through joint as per requirement complete all as specified and directed. Note:- (i) The fault located equipment will be brought at site within 02 days of Instruction received from Engineer-in-charge complete all as specified and as directed by Engineer-in-charge. (ii) (i) Excavation, earthwork, cable joints, sand coushing & cable cover will be measured and paid separately if required)

M & L for road cutting for laying of HT cable or pipe and making good disturbed surface by using suitable ratio of PCC complete all as specified and directed by Engr in charge.

M & L for leakage rectification of transformer after taking shut down/disconnecting transformer and opening of top cover of transformer at site and changing of HT/LT studs/ bushing/ seal, replacement of breather assembly/ Temperature indicator etc by deploying trained team of electrician/mechanic and re-fixing of top cover connecting and charging of transformer in presence of Engr-in-charge complete all as specified and directed by Engr-in-charge. Note:- Arrangement of T&P required at site is responsibility of contractor. Spare used will be measured in respective items.

S & F Power Pack for VCB control system of 230 Input and 24 Volts output with fuse protection all as directed by EIC. Make : MAX Power or equivalent

S & F in replacement of closing coil, ISI marked suitable for 11 KV VCB Panel, complete all as directed.

S & F in replacement of tripping coil, ISI marked suitable for 11 KV VCB Panel, complete all as directed.

S & F in replacement of Auxiliary relay, 24 volt ISI marked suitable for 11 KV VCB Panel, complete all as directed.

Relaying of precast concrete cable cover class HV type-I flat size 300x180x40mm.

Supply and spraying anti vegetation chemical liquid of 1 litre bottle mixed with water complete all as specified and directed. Note:- (i) Complete anti vegetation chemical shall be deposited in advance and will be sprayed by Contractor's labour as per direction and location where directed. (ii) Area of spray all substations at AF stn Bhuj. (iii) Unit rate quoted is deemed to be for the vegetation chemical liquid without water.

Pelectricals (BID ID -3372514)

JAMDAGNI ENGG WORKS (BID ID -3366259)

MS ENTERPRISES (BID ID -3366193)