CA NO. GE (I)(AF)/SHL/ OF 2021-22 REPAIRS TO HT UG CABLE/DISTRIBUTION LINE, VCB AND OTHER ALLIED WORKS AT AF STATION LIATKOR PEAK UNDER GE (I) (AF) SHILLONG

Amount

Dismantling and taking down ACSR Conductors of any size from poles complete all as directed.

Distmantling and taking down old HT Steel tubular swaged electrical poles after demolition of foundation concrete/pedastal of pole carefully(without damage) complete all as directed.

Distmantling and taking down old insulator any type any size, any make from cross arms/poles etc, complete all as directed.

Distmantling and taking down old cross arms, bracing support clamps and back plates from poles etc, complete all as directed.

M & L for removing existing stone aggregate mixed with soil for an average thickness of 15cm, screening stone aggregate for re-use, removing grass roots etc, laying a layer of lime for 50mm thick and then re-laying stone aggregate obtained from screening complete all as specified and directed.

Excavation in trenches in soft / loose soil, not exc 1.5 m wide and n. exc 1.5 m depth or n exc 10 Sqm on plan & getting out, for laying of cables, foundations of poles, struts, stays etc. and getting out including triming and forming bottom surface complete, all as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cms thick in soft / loose soil back in trenches after cables have been laid and tested, poles, stays , struts have been erected and tested complete all as directed.

Removing excavated materials to a distance not exc 50m and depositing where directed at a level not exc 1.5 m above the starting point in soils complete all as directed.

M & L for 40mm size stone aggregate laid in layers as directed around electricals installations complete all as directed.

M & L for PCC 1:4:8 type D-2 using 40 mm graded crushed stone aggregate as in foundation of poles/ struts/ stay assembly etc complete all as directed.

M&L for PCC 1:2:4 type C-1 using 20 mm graded crushed stone aggregate as in padestal of poles etc including weathring, slightly rounded or chambered angle and throating including use and waste of necessary form work finishing all exposed faces of concrete even and smooth using extra cement complete all as directed.

M & L for 100mm thick cement concrete type B-1, 1:2:4 (using 20 mm graded stone aggregate) as in flooring laid adopting panel dimension not exceeding 1200mm x 1200mm, finished even and smooth without using extra cement complete all as specified and directed.

Taking out old unserviceable HT UG cable and Supplying, laying, jointing, testing and commissioning XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with aluminum conductors, 11 KV grade of , IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in GI pipe / fixed to pole complete all as specified and directed of following sizes:-

120 Sqmm, 3 core (Note :- Excavation & earth work, GI pipe for laying of cable, sand cushioning, cable protection cover shall be measured and paid for seprately under respective items of the schedule.)

M & L in replacement for outdoor type heat shrinkable cable end termination jointing kit for HT 11000 Volts(Earthed) grade cable of following size complete with jointing material and accessories complete all as directed :-

120 Sqmm, 3 core

M & L in replacement for indoor type heat shrinkable cable end termination jointing kit for HT 11000 Volts(Earthed) grade cable of following size complete with jointing material and accessories complete all as directed :-

120 Sqmm, 3 core

M & L in replacement for heat shrinkable outdoor type straight through jointing kit for 11 KV (Earthed) grade cable of following size complete with jointing material and accessories complete all as directed :-

120 Sqmm, 3 core

S & F in replacement Galvanised steel tubing light grade for protection of under ground cable on poles / walls/under road crossing/laid in trenches etc conforming to IS-1239 for following bore complete all as directed:-

100 mm bore (Note : Excavation & earth work shall be measured & paid separately under respective items of this Schedule).

M & L for dry sand cushioning to PVC under ground cable with screened and washed sand and punning to provide a required cover complete all as specified and directed. Note :- Thickness after punning shall be considered for payment.

Supply and laying factory made ISI marked un-reinforced precast concrete cable cover class HV type I flat of size 300mm x 180mm x 40mm complete all as specified and directed.

Supply and fixing HT cable route indicator made out of standard cast iron body firmly mounted on angle iron of size 40mm x 40mm x 5mm 750mm long along HT cable trench including embedding of route indicator in PCC 1:2:4 type B-1 block of size 15cmx15cmX30cm deep, complete all as directed.

S & F in replacement synthetic insulating mat of size 1Mx2Mx3mm thick for sub station building and 11 KV switch gears ISI marked bearing IS No. 15652:2006 complete all as directed.

Supplying, transporting to site errecting and fixing in position Steel tubular swaged pole, 11 metres long, type 410 SP-55, complete with cast iron base plate, pole cap, finial taper plug, bolts, nuts, washers etc including painting with two coats of aluminium paint over one coat of red oxide primer including 3 nos band/straps in red post office box colour (300mm wide EACH) using fluorescent paint commencing at a distance 300mm from padestal of pole and marking pole nos with black synthetic enamelled paint including tarring one coat on steel surface embedded in concrete complete all as specified and directed. Note:- Excavation and earth work, PCC etc shall be measured and paid separately under respective items.

Supply and fixing MS structural steel work in cross arms, bracings, supports, clamps and back plates fabricated (with drilled holes hot and cold etc) from channel/angle iron sections of various size and shape FI clamps (full, half 'D' and earth clamp etc) including necessary MS bolts, nuts, washer etc and painting with two coats of aluminium paint over one coat of red oxide primer complete all as directed.

M&L for HT Pin type porcelain,vitreous, white, brown or green insulator 150mm height, 150mm dia suitable for 11000 volts grade (ISI marked) including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut complete, all as directed.

M & L for disc type insulator, porcelain, vitreous 145mm high and 255 mm dia ball and socket type, white brown or green ' Single disc' assembly for tension with tension clamps for conductors, working pressure 11000 Volts complete all as specified and directed.

S & F hand rails, half round or other stock section or core for wooden hand-rail straight portion, drilled and countersunk for balusters runnings bars, for doors balusters, nosing to steps including embeding in concrete and screwing etc wind ties for roof including secruing bolts , posts and struts in fencing including cutting tops to shape as directed, rilling holes, notching for wire etc flat iron fillets (for securing wire mesh etc ) including all necessary drilling, bolting or reveting etc and similar work confirmign to Fe-410-0 or Fe310-0 complete all as specified and directed.

S & F in replacement Air break (switch) insulator assembly for 11000 Volts suitable for current rating upto 400 Amps mounted on and including MS base frame and expulsion fuse, 11 KV (earthed) barrel fuse complete all as specified and directed.

Supply & fix aluminium conductor steel reinforced (ACSR) any size straining properly on insulator, maintaining desired sag and binding with aluminium tap/binding wire with connectors, making jumpers etc, complete all as directed. (Note : Each run of conductor shall be measured and paid.)

S & F in replacement lightening arrestor Lightening arresters non linear type complete with all fitting, transmission class, discharge capacity 65 KA, 11000 volts grade including clamps nut, bolts & washers and connecting to earth with GI strip/wire complete all as specified and directed

S & F in replacement Danger notice plate of size 25x20cm and 1.6mm thick mild steel, vitreous enamelled white, with letter, figures and conventional skull bones in signal red colour and fixed with mild steel clamps, nuts, bolts and washers, clamps made out of 25x3mm flat iron for HT poles/transformers/pillar box etc with voltage and danger indicated in Hindi and English complete all as directed.

M & L for repairing/overhauling of Gang operated Air break switch and DO fuse unit upto 400 Amps capacity, 11 KV triple pole, mechanically operated mounted on insulators and steel frame installed vertically / horizonatally by oiling and greasing of mechanical moving parts, smoothing and polishing of electric contacts and applying conducting jelly to contacts and replacement of broken /worn-out components(as ordered) including testing after repair complete all as directed. (Note :- Replacement of worn out components/parts/insulators etc Shall be measured and paid separately as Supply only under respective items here-in-after)

Supply only following components/parts of Air break switch and DO fuse unit :-

Female contact or fixed contact of capacity upto 400 Amp, 11 KV heavy duty of high conductive metal.

Male contact or moving contact of capacity upto 400 Amp, 11 KV heavy duty of high conductive metal.

Copper wire mesh flexible insulated jumper upto 400 Amp

Operating mechanism worked from ground level, with locking arrnagments including Godrej pattern 65mm pad locks with two keys,

Supply and fix in replacement vice type connectors consisting of two brass plates, and two steel bolts and nuts for 2 conductors of equal or unequal sizes between 10 to 13mm dia for non-tension connections including treatment of connector and ACSR conductor with conducting jelly complete all as specified and directed

M & L for preparation of external old painted steel surfaces of steel tubular swaged poles/steel rail poles of 11 mtrs long ( etected at site as in poles, two pole structure or four pole structure) and painting with one coat of aluminium paint including 5 Nos band/straps (3 Nos in black and 2 Nos in red post office/yellow colour (300mm wide EACH) using fluorescent paint commencing at a distance 300mm from padestal of pole and marking pole Nos in white letters on black back ground of 20 Cm dia circle complete all as specified and directed.

M & L for preparation of old or previously treated steel surfaces such as cross arms, clamps and other accessories of any description not otherwise described over 10cm width or girth and applying one coat of aluminium paint complete all as specified and directed.

M & L for preparation new or previously untreated steel surfaces of any description over 10 cm width or girth and applying two coats of synthetic enamel paint of 1st grade quality over and including one coat of red oxide zinc chrome primer complete all as specified and directed.

M&L for cutting of bushes and cleaning the area around sub station including two pole/for pole structures premises at Dadwara and Ex Maharaja Land and cutting bushes, complete all as specified and directed.

M&L for expanded metal, cut to length, bent to shape required and tying with and including annealed mild steel wire not less than 0.9mm dia or fixing with galvanised steel staples and fixed to steel members weight n. exc 4 kg per sqm complete all as directed.

M & L for servicing/overhauling of indoor HT VCB's vertical isolation type of capacity 630/800 Amps of Make : AREVA after removing contact unit from panel cleaning, greasing of all moving parts, tightening of nuts/bolts and removing dirts, carbon deposits and adjusting spring tension, tightening all cable connections, replacement of broken connectors, checking of vacuum bottles, meagre testing for IR value, checking of complete AC/DC wiring, replacing unserviceable wiring as required including replacement of worn out/unserviceable parts etc all as directed. Note :- (a) Replacement of worn out/unserviceable components/parts etc Shall be measured and paid separately as Supply only under respective items here-in-after. (b) Servicing/Overhauling of VCB to be carried by engaging authorised service engineer of manufacturer.

Supply only following components/parts of HT VCB's vertical isolation type of capacity 630/800 Amps of Make : AREVA :-

LED indication lamp 110/24 Volts DC of colours as directed.

Auxilary NO/NC switch for above VCBs

Resin cast type indoor, Current transformer 11 KV of ratio 100/5 with 15 VA and 5P10, class-1

Over current and earth fault self powered relay with numerical digital display with installation and fault record. Model & Make : REJ 601 of Make ABB or equivalent model of makes listed in list of makes.

Tripping and closing coil 110 Volts

Space heater 80watt, AC, 230 Volts, 50 Hz {Note for item Nos 40.10 to 40.70 : Genuine spare parts/componentsshall be procured through OEM/their authorised distributers or dealers/service frenchise/service stations (Authosised to deal in genuine spare parts/components)}

M & L for Caliberation of relays through primary and secondary injection method and testing complete relays like IDMT relays / instantaneous earth fault relay of HT VCBs panels and control relay panels complete all as directed. Note : Calibration of VCBs to be carried by engaging authorised service engineer of manufacturer.

mahinder electricals

M/S DEEDAR ENTERPRISE