CWE/GGN/FT-14/2024-25 REPAIR/MAINT OF HT DISTRIBUTION NETWORK, ISOLATORS, 11 KV BUSBAR, PANEL, AVR AND OTHER CONNECTED WORKS AT AF STN DADRI UNDER GE (AF) FARIDABAD

Amount

M&L in repair Cable jointing kit for 11 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 95 sqmm 3 core XLPE armoured aluminium conductor all as specified and testing after jointing complete .

Supply & fix Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 95 sqmm 3 core XLPE armoured aluminium conductor cable ofcomplete with jointing material and accessoies complete all as specified and testing after jointing complete .

M&L in repair out door type cable straight through joint heat shrinkble type suitable for HT UG cable of size 95 sqmm 3core 11KV of aluminium conductor all as specified and testing after jointing complete all as specified. Note: for Item no 1 to 3 earth work deemed to included in quoated rate.

Supplying installing in replacement, testing and commissioning of air break, gang operated, triple pole switch, outdoor, vertical mounting type of capacity 200 amps, ISI marked, mechanically operated on insulators and frame work with operating mechanism worked from ground level, with locking arrangements including 65 mm pad lockes with two keys, complte with fuse mounts, fuse carriers and HT fuse elements having suitable rating rating suitable for HT 11 KV, 50 Hz Ac Supply incl necessary electric connections complete all as specified.

supply and fixing litghtening arrestor expulsion type complete with all fittings transmission class discharge capacity 65 Kilo Amp suitable for 11000 Volts incl taking down old u/s existing complete all as specified.

M & L for cross arms, bracing supports, clamps back plates angles fabricated from the structural steel section including bolts, nuts, washers, welding, bending, drilling holes for bolts, bent to any required shape of size as indicated or directed, inclusive of one primer coat and two coats of aluminium paint after preparation of surfaces incl taking down old u/s existing complete all as specified.

Excavation in trenches in soft/loose soil not exceeding 1.5 Mtr wide and not exceeding 1.5 Mtr depth for laying of cables/poles or foundation etc and getting out all as specified.

Returning, filling, including spreading levelling and well ramming in layers not exceeding 25cm apart all as specified.

Removing of surplus excavated soil to a distance not exceeding 50 Mtr from starting point and depositing where directed at a level not exceeding 1.5 Mtr above the starting point all as specified.

M&L for sand cushoning with a layer of sand 80mm thick before laying of cable and 150mm thick after laying of cable to trenches complete all as specified. Note : Compacted thickness of sand cushioning of 180 mm shall be considered for measurement and payment purpose.

Supply and Laying precast concrete cover class HV type 1 flat size 300mmx180mmx40mm laid in trenches for cable protection incl taking out old u/s existing complete all as specified and directed.

M&L for XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 11000 volts Earthed, grade cross sectional area 95 sq. mm 3 core incl thimbles as required with suitable size of calmps on wall/under trenches incl taking down old u/s existing cables of any type and size etc complete all as specified and directed.

Supply and fixing in replacement of Earth continuity strip or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or fixed on wall with porcelain insulator or any other indicated situation for loop earthing etc. as required 20x3 mm copper strip complete all as specified and directed.

M & L for Earthing complete with galvanised steel earth plate electrode 60×60cm.× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level, connected to using galvanised iron strip 25×4mm as earthing lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified painting of earth pit chamber cover with two coat of black bituminius paint and and marking of result incl taking out old u/s existing earthig complete all as specified and directed. Note: (i) Rate of Earth work, Earthing electrode, all connections, nut-bolts, washers, complete labour, testing, Earth lead upto 7.5 mtr, char coal dust, common salt, porcelain insulator, PCC earth Pit, CI frame ,RCC cover, funnel with wire mesh are incl in quoted rate and watering pipe, earth lead protection pipe, test poit, earth lead exceeding 7.5 mt are measured and paid separately.

M&L and testing for Advance Maintenance Free environment friendly chemical earthing as per IS 3043 with copper strip of size 40 x 6 mm, 3 mtr long, 50mm dia outer pipe of thickness 2mm filled with highly conducting metellic compound in gel foam and boath end sealed, electrolytic copper eathing electrodes. The earth pits shall be filled with sufficent quality ultra high conductive black fill compound with neccessary accessories like lockable pit cover and PVC 16 sqmm single core multistrand PVC insulated copper conductor drawn in HDPE pipe bore 25mm Including test point terminal block made of gun metal phosphorus bronze of size 75 x 75 x 25 mm drilled and screwed including 3 Nos 8 mm dia 25 mm long hexagonal head screws and Hot dip galvanised sheet 2 mm thick box of size 200 x 100 x 100 mm with Hexagonal head screws 125 mm incl taking out old u/s earthing material complete as required all as per standard practices and specifications. Note: The concrete pit shall be PCC 1:3:6 type c-140 mm thick precast cover slab of RCC (1:2:4) type B-1 using 20mm aggregate reinforced with 8mm TMT bars @ 10 cmm c/c on both sides with suitable cast iron handle shall be provided in liew of cost iron cover

M&L for MS Duct covers of Mild steel plates, plain or chequered, 5mm thick Fe410W (Gde E 250) quality A or over in thickness in available sizes incl taking down old u/s existing complete all 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 LT, 20x15cm size incl taking down old u/s existing complete all as directed .

Complete al as above item No 17 herein before but for HT, 25x20cm size complete all as directed .

Surface cleaning/site clearance n exc 15 cm in depth in Sub stations area, trenches,sub station rooms two pole/ foure structure surroundings to make a over all presentable condition all as directed by Eng In charge.

Supply of loose filling stone Aggregate of gauge 40 to 80 mm grade in Two pole/4 pole electrical sub stn area complete all as specified.

Supplying and laying in replacement synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv (size 2x1m) for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety Supply incl all fixing adhesives etc complete all as specified.

S&F XLPE insulated aluminium conductor single core cable inulated for jumper suitable for HT 11000 volts overhead lines of size 120 Sqmm including making binding with GOD switches/insulators/ conductors and connection with GOD switches (length of jumper shall be 4 mtr but not more than 5 mtr long) incl taking down old u/s existing complete all as specified and directed.

Complete All as per Srl item No 22 above but of size 95 Sqmm (length of jumper shall be 1.5 mtr but not more than 2 mtr long) complete all as specified.

M&L for Cleaning, preparing and painting with 2 coat of super enamalled aluminium paint over one coats of red oxide primer to Steel tubular pole existing colour to cross arms, MS channels, angle iron, frame work brackets 'D' clamps etc all as directed by engg -in- incharge.

M & L for dehydration /filtration of transformer oil in existing pole mounted/floor mounted transformer , Voltage stabilizer, HT OCB, ,HT VL switches with the help of dehydration/filtration machine to achieve the dielectric strength of transformer oil not less than 50 KV complete. Note:- (i) Dehydration/filtration machine will be arrange by the contractor and he will make his own arrangement and to carry the machine at various sub stations including vehicle and towing arrangement. The rate shall be inclusive at above. (ii) Filtered oil should be with stand for one minute on voltage applied 50 KV at 4mm gap (iii) Test result will be recorded before and after filtration of oil.

Supply and pouring in replacement new transformer oil as per IS : 335 (Latest revision) for transformers installed at various site or in repair for topping up after dehydration to achieve the di electric strength 60 KV at 2.5 mm gap, complete all as specified and as directed by Engr-in-Charge. Note : Transformer oil shall be brought at site in sealed container from the original manufacturer and shall be opened in front of Engr-in-charge, Container shall be deposited by the contractor to the deptt, which will be returned after completion of conract.

M&L for Taking down carefully transformer upto capacity 500 KVA, any make, any type from plinth / substation by dismantaling, dis-connecting HT & LT sides, earthings of transformer, supporting angles/crossarms, Shifting / transporting transformer carefully from the site to the workshop and refixing at site after carryout and connecting with minor repair works repair with all electrical connections incl testing.

M&L for service, Repairs to the leaks of transformer from tap switch/ fins/ any pats of body, gauges by replacing gasket / seal or Repairs to the leaks of transformer body / fins, by welding / brazing etc

M&L for service, Repairs to Servo voltage stabilizer including replacement of parts of body, volt meter, Amp meter, display by replacing gasket / seal , Repairs to the leaks , by welding / brazing etc complete all as specified and directed.

M&L for in replacement Drain valve t type having brass materials suitable for any transformer for draining out oils, of size 25mm bore ISI marked as direced b engg-in-charge.

Supplying and fixing in replacement Silica Gel Breather assembly including vent pipe and Silica Gel for indoor/outdoor transformers, capacity upto 400 KVA complete all as specified and directed.

Supply and fixing Breather assembly complete suitable for power distribution transformer of capacity up to 200 KVA .

Supply and fixing in replacement temperature gauge 0-100 degree Celsius analog type frequency 50-60Hz IP RATING IP48 BODY OF mild steel to measure winding temp of tranformer coil all as specified and directed by Engg-in-Charge.

Material and labour for servicing /testing of breaker/control panel including CT, PT and relays in control panel of VCB of capacity 630 Amps and rating 11 KV complete as details mentioned as under:- (a) Details of servicing of breaker :- (i) Adjustment of mechanism if required. (ii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iii) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. (iv) Check for rust and wear. (v) Check Spring Tension and pitting of the Cluster Contacts. (vi) Visual check for rust and deformation. (vii) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (viii) Check for loosened connections, rust, damaged lead wires. (ix) Check whether the contacts are damaged by arcing. (x) Checking of control circuit & tighten the connections if any. (xi) Check close & trip coil. (xii) Checking of Jaw Contacts Conditions and repair/adjust. (xiii) Replace the jaw contacts,If required. (xiv) Improvement of resistance of epoxy insulator and epoxy body by applying post heated varnish. (xv) Replacement of Dashpot/shock absorbers . (xvi) Replacement of carbon brush of spring charging motor

(b) The following test shall be carried out:- (i) Primary Injection Test of CT / PT (ii) Closing & Opening Timing Test for all three poles. (iii) IR Test with megger in open and closed condition. (iv) Contact resistance test for all three poles (v) Closing coil resistance (vi) Tripping coil resistance. (c) Testing of following relays of control panel with Secondary Injection Kit ,checking and programming of relay :- (i) Over current and earth fault relay (d) Testing of followig Aux relay (i) DC Supply supervision relay. (ii) Master trip relay Note : Servicing/ repair shall be done only by OEM.

S&F in replacement of tripping push button as per sample suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of closing coil assembly suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of tripping coil assembly suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of earth contact assembly suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of spring charging mechanism assembly suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of spring charged indicator suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of ON/OFF indicator suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of auxiliary switch suitable for VCB 11 KV complete all as specified and directed by Engr-in-charge.

S&F in replacement of indicating lamp LED type in red, yellow, blue suitable for VCB 11 KV Panel complete all as specified and directed by Engr-in-charge.

M&L for auguring of holes in true horizontal position under road by means of mechanical rig after doing ultrasound to prevent any damage to existing cable/pipe line coming in route 1.5 Mtr deep and not exceeding 50 Mtrs long incl laying HDPE pipe not less than 150mm dia incl taking out old u/s existing pipe complete all as specified.

M & L for serching fault location of HT/LT UG cable 415 Volt laid in trenches /ducts with the help of eletronic fault locating machine comprising of surge generator pulse ,ECHO fault locator with freqency distance calculator etc .Excavation in normal soil starta exposing the cable fault removal of deteriorated portion of the cable treating of cable of any size including disconnecting and re fixing cables with lugs complete. Note:- (a) The fault which is detected through cable fault locater will only be paid under this item (b) Charges of cable fault locator and DG set including transportation charges deemed to be included in the quoted rate. (c) Earth fault locator will be provided by the contractor for even single fault and no dealy on this account will be acceptable otherwise penality will levied Rs 1000/- per day. (d) Necessary testing of cable after making joint will be deemed to be including in the cost of relevent item. However necessary earth work cable cutting , joint making Joint will be paid under relevant item

Net Contract Sum will be after deducting Sch of Credit of Rs 60922.50

YASHVI ENGINEERS (BID ID -3081697)