REPAIR / RE -WINDING OF TRANSFORMER, VOLTAGE STABILIZER AND REPLACEMENT OF UNSERVICABLE HT OVERHEAD CONDUCTOR, HT UNDERGROUND CABLE / AB CABLE, GOD AND OTHER ALLIED ACCESSORIES UNDER THE AOR OF AGE B/R-I UNDER GE 881 EWS

Taking down old and UNSV transformer at diffrent locations in the area of responsibility falls under AGE B/R I from two pole structure/foundation including disconnecting the LT/HT connection and shifting to workshop and getting back after repair and refixing the same at original location & connecting electrically and commissionig complete all as specified and directed by Engineer-in-Charge. for 25 KVA to 63 KVA capacity transformer. Note : - (i) The contractor will taking down and refix the transformer at site located at various location as directed by Engineer-in-Charge. (ii) The rate quoted by Contractor deemed to included transportation of T & P complete.

All as per serial item No 01 above but for transformer of capacity 100 KVA to 250 KVA complete all as specified and directed.

Replacement / renewal of burnt defective HT/LT copper coil of different type capacity winding with superior quality enamelled copper winding wire/strips of approved make of suitable size/guage and number of turns matching with the existing impendence and insulated including all allied materials such as cork sheet, fiber glass insulation/paper insulation/Lathoride paper, cotton, empire tape and wooden blocks, bolts, nuts & washers (Brass) soldering/welding and other packing material etc required for entire winding of coils all as specified and directed by Engineer-in-Charge

HT bushing porcelain, vitreous with brass spindle, threaded with washers nuts, lock nut and rubber oil seal suitable for transformer of any make/type/capacity upto 250 KVA in repairs all as specified and directed by Engineer-in-Charge

LT bushing porcelain, vitreous with brass spindle, threaded with washers nuts, lock nut and rubber oil seal suitable for transformer of any make/type/capacity upto 250 KVA in repairs all as specified and directed by Engineer-in-Charge

Top gasket sheet made out of 6mm thick cork sheet with suitable GI bolts, nuts, washers for top of transformer any capcity in repairs complete all as specified and directed.

Replacement of dehydrating breather assambly CI body of standard size filled with silica -gel for transformer of capacity upto and including 250 KVA in repairs complete all as specified and directed.

Replacement of temperature gauge circular dia type of standard size for transformer of capacity upto and including 250 KVA in repairs complete all as specified and directed.

Tap changer assembly & replacement of worn out nuts and bolts and providing new copper lead for tap changer assembly complete all as specified and as directed.

Filling in with new transformer oil for top up having low viscosity, of approved make as per IS 355 of 1992 and di-electric strength 60 KV (after filtration) complete all as specified and directed by Engineer-in-Charge.

Filtration & dehydration of existing transformer oil including heating continously to achive results for reuse as per standards including recording its viscosity etc prior & after filtration & dehydration of transformer oil with maintaining its results complete all as specified and directed.

Repairs to leaking transformers at site up to 250 KVA by opening the top cover, draning the transformer oil to the level just below the bushing, replacing the all four bushing with connecting rod, replacing the oil gaskets of bushings on HT & LT side, replacing the top oil gasket, reassebling, testing etc comlpete all as directed.

Each Job

Supply & fixing in replacerment to incorporate in tems as srl item no. 13 and Refixing in the same in the orignal position:- Servo control motor with base plate, condenser, capacitor, gear etc of existing make all as specified and as directed

Supply & fixing in replacerment to incorporate in tems as srl item no. 13 and Refixing in the same in the orignal position:- Auto control unit 畓灰祬☠映硩湩⁧湩爠灥慬散浲湥⁴潴椠据牯潰慲整椠整獭愠⁳牳瑩浥渠⹯ㄠ″湡⁤敒楦楸杮椠桴⁥慳敭椠桴⁥牯杩慮潰楳楴湯ⴺ䜊慥⁲慍档湩੥}‰ŸĈ匀灵汰⁹…楦楸杮椠敲汰捡牥敭瑮琠湩潣灲牯瑡⁥湩琠浥⁳獡猠汲椠整潮‮㌱愠摮删晥硩湩⁧湩琠敨猠浡

Taking down old servo voltage stabilizer 100 to 250 KVA, 280 to 400 V oil cooled un balanced or balanced servo control from different locations in the area of responsiblity falls under AGE B/R-III area of GE 881 EWS and shifting to authorised workshop and getting back after repair/overhauling by way of replacing unserviceable parts (parts to be measured & paid under relevent items & connecting electrically and commissioning complete all as specified and directed at site. (Repair shall be carried out in authorised workshop, The rate quoted by Contractor deemed to included transportation of T & P complete.

S &F in repairs Copper thimbles for cable connections of size 25 Sqmm to 120 sqmm complete all as specified and directed

S &F in repairs Copper thimbles for cable connections of size 150 Sqmm to 400 sqmm complete all as specified and directed

Repair/overhauling of air break switch odf capacirty HT 11 KV complete by replacing stationary, and moving contacts, fexible copper cord, GI nuts, bolts, etc incl alingment for smooth functioning from ground level all as req uired at site and as directed by E-in -charge.

Supply and fixing in replacement of Air break gang operated switch with 12 insulators outdoor type, triple pole, mounted on 12 insulators, mechanically operated, suitable for vertical installation, single break, provided with locking arrangement, consisting of MS channel, HT post type insulator contacts of copper alloy, high pressure, heavy duty contact assembly operating rod 25mm dia GI pipe, medium grade, complete including drop out fuses conforming to IS-1818, rated voltage 11 KV and for current rating 200 Amp, complete all as specified and as directed.

Supply and fixing in replacement of Lightning arrestors (set of three) metal oxide surge type (ZnO) complete with all fittings transmission class discharge capacity 65 Kilo Amps suitable for 11000 volts complete all as specified and as directed.

S&F in repair cable jointing kit for 11 KV (earthed) grade cable for outdoor termination heat shrinkable type joint, complete with and including jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 95 to 120 Sqmm , also with and including connecting single thimbles etc after disconnecting of electric supply including removing burnt out jointing kit etc, complete all as specified and directed.

S&F cable jointing kit for 11 KV (earthed) grade cable for straight through heat shrinkable type joint, complete with and including jointing material and accessories suitable for 3 core XLPE armoured aluminium cable of size 50 to 95 Sqmm , also with and including connecting single thimbles etc after disconnecting of electric supply including removing burnt out jointing kit etc, complete all as specified and directed.

Painting of transformer/voltage stabilizer any make/any size including XPM wire mesh complete, by spraying with two coats of synthetic enamel paint of first quality dark grey/ivory colour paint over a coat of red oxide primer after and including complete removal of old paint and primer by scratching, rubbing and marking SM No complete all as specified and directed.

Painting steel tubular pole including cross arms, 'V' brackets, 'D' clamps, nuts, bolts, GOD complete including painting with five strips of 30cm each black and white paint in alternate strips from the base of pole upto 1.5mtr height complete, spray painting with two coat of synthetic enamel paint of first quality silver paint over a coat of red oxide primer after and including complete removal of old paint by scratching, rubbing complete all as specified and directed.

XLPE insulated, screened, PVC bedded galvanised steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor rating 11000 volts grade of size 95 Sqmm 3 core laid in trenches or passing through pipes/ducts or fixed to walls/poles complete all as specified. (Earth work, brick protection and sand cushioning shall be measured and paid for separately).

Stay assembly complete with accessories i.e. stay plate 300mm x 300mm x 6mm, galvanised thimbles, GI stay wire 7/4 SWG, loop type insulators, vitreous porcelain, white brown or green of large size with overall dimensions 90mm x 140mm, clearance of hole 25.5mm, etc and all other accessories as shown in electrical plate No 1 on Ser Page No 495 of MES Schedule Part-I complete including dismantling stay assembly complete all as specified and directed.

Material & labour in replacement for GI tubes, "light grade", 80 mm bore with and including all fittings laid in trenches/road crossing/floors etc for cable protection, complete all as specified and directed. Note: Excavation and earth work shall be measured and paid for separately.

Taking out old unserviceable rubber matting and supply and laying new rubber matting (chequred type), 11000 volts grade of size 2m x 1m x 12 mm complete all as specified and directed.

PCC 1:2:4 (nominal mix) type B1 using 20mm graded crushed stone aggregate, as in coping of poles and the like complete including weathering, slightly rounded or chamfered angles and throating all as specified and directed.

PCC 1:3:6 (nominal mix) type C-2 using 40mm graded crushed stone aggregates, as in foundation filling and mass concrete for poles and stay/installation paths complete all as specified and direct

PCC 1:4:8 type D-2 using 40mm graded crushed stone aggregate as in foundation of poles etc including necessary form work, complete all as specified & directed.

S&F cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections conforming to Fe-290 Gde E-165 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 red oxide primer coat and two coat of silver paint all as specified and directed.

Dismentelling OH ACSR Conductor from the existing LT /HT pole complete all as specified and directed.

Aluminium conductor steel reinforced (ACSR) of size 6/1x2.59 (weasel), 6/1x2.11 (squirrel) conductor for HT/LT lines on steel tubular poles, stretching without kinks and bends including binding wire complete , complete all as specified.

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below ground level, connecting to galvanised iron strip of size 32x6 mm (as earth strip), by means of bolt, nuts, check nuts and washer of galvanised and earth wire protected by provision of galvanised iron pipe light grade, 15mm bore including provn of concrete pit in PCC M-15, type B-I using 20mm graded crushed stone aggregates with 40mm thick precast cover of size 550 mm X 550 mm X 75 mm of RCC M-15, type B-I, reinforced with XPM (weight not less than 4 kg/ Sqm) and frame of angle iron 25x25x3mm with lugs 2 Nos and with 6mm dia mild steel bar handle made to shape, galvanised iron medium grade 20mm bore pipe for watering perforated at bottom 1.75 metre long placed on top edge of earth plate, common salt and charcoal filling, test point made out of phosphorous bronze with fixing arrangement, funnel, wire mesh and including earth work in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 metre, all as per electrical plate No. 3 of SSR 2009 Part-I and connection to earth test point all as specified and testing on completion.

Each Set

Supply and fix in repair pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut 150mm height, 150mm dia for working pressure 11000 Volts grade of HT line including taking down existing cracked/unserviceable pin type insulator complete all as specified and directed.

Supply and fix in repair disc type insulators, porcelain vitreous white brown or green, 145mm high and 255mm dia ball and socket type, single disc assembly for tension with tension clamps for conductor having working pressure 11000 Volts including taking down existing cracked/unserviceable disc type insulator complete all as specified and directed.

M & L for cradles, hexagonal/rectangular, fabricated with galvanised steel wire 3.15 or 4mm dia including taking down old unserviceable wire complete all as specified and directed.

Returning filling in soil including spreading leveling watering and well rammimg in layer n exc 25 cm complete all as specified and directed

Removing excavated soil not exc 50m & depositing where directed at a level not exc 1.5m above the starting point all as specified and directed

Sand cushioning to underground cables complete all as specified in clause 19.75 of SSR Part-I laid before and after laying of cable, complete all as specified.

Sub class ‘B brick, old size, brick covering laid dry, flat, transversally along the length of cable on sand cushioning, with width equal to the length of the brick, complete all as specified and directed.

Trimming tree branches coming in proximity to HT over head lines and involved with over head lines where detected , over head lines to be cleared of tree branches atleast 1.5 Mtrs apart from ACSR conductor from all sides all as directed.. (Contactor is supposed to manage long wooden ladder atleast 32 feet height, rope and handsaw machine to clear the lines from tree branches having girth upto 6" dia at his own arrangement and cost ). Note:- Five lines together will be measured as one span from pole to pole.

Re-streching of loose over head ACSR conductor/AB Cables/GI wire and repair of the broken conductors and adding new length( if required) in place of old and burnt conductor of any size on existing poles with proper sagging including winding with winding wire all as specified. ( Old conductor shall be reused where required for repairing broken length of conductor as directed by Engr-in-charge). One span is considered as 50 mtr.

Replacement of Danger notice plate of size 25 x 20 cm, made of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters, figures and conventional skull and bones in signal red colour and fixed with and including mild steel clamps, bolts and nuts of approved size for HT poles, complete all as specified.

Each Job