Name of work REPAIR/REPLACEMENT OF INSULATORS, HT VCB, RMU PANELS, MAINTENANCE OF TRANSFORMER, TWO POLE STRUCTURE, EARTH PITS AND ALLIED WORKS AT AF STN MOTHALA UNDER GE (AF) NALIYA

Amount

M & L for maintenance of VCB / RMU11 KV, 400/ 630 /1200 Amps including removal of VCB trolley, cleaning of all copper male and female contact, tightening of all connections, checking of all auxiliary contacts, control wiring, servicing of relays, etc. refixing the VCB trolley to its original position including proper setting of manual/motorize operation of VCB, checking/setting of tripping system, etc complete all as specified and directed by Engr-In-Charge. Note: (i) Maintenance to be carried out the reps of Authorized person. (ii) After completion test certificate shall be furnished. (iii) Calibration of relay by injecting High voltage through CTS checking the over load system of VCB upto 90% rated load and artificial fault creation and setting of relay by 10 to 15% of rated load removing u/s overload and earh fault relay including connection with power pack. (iv) Opening out the trolly checking the operation of VCB mechanically and electrically through shunt trip coil including energizing of springs automatically including checking of TNC switch.

M & L for taking down carefully Transformer / Isolation transformer/SVR of 100 KVA to 500 KVA and above capacity, 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, bushing, 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/ replacement of worn out part, 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 Engr-In-Charge Note: Spares, Rewinding of transformer,reinsulating & heating if required will be measured and paid separately under respective Sch'A' items

S & F in repair Top cover gasket made up of 5 mm thick cork sheet.

S & F in repair HT bushing, porcelain vitreous brown body suitable for 11 KV as per IS 3347 complete all as specified and directed by Engr-In-Charge.

S & F in repair LT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347 complete all as specified and directed by Engr-In-Charge.

S & F in repair HT brass studs along with washers for one terminal 11 KV transformer complete all as specified and directed by Engr-In-Charge.

S & F in repair LT brass studs along with washers for one terminal 1100 Volts grade transformers complete all as specified and directed by Engr-In-Charge.

S & F in repair Breather assembly complete with silica GEL of make Omkar/Kamal complete all as specified and directed by Engr-In-Charge.

S & F in repair Temp level indicator including its bolts, nuts, gasket etc complete all as specified and directed by Engr-In-Charge.

Taking down old / burnt out HT/LT coils and rewinding the same by super enameled copper winding wire / strips of appropriate size of super quality (as per existing material & size of transformer coils) including, insulating, varnishing, heating, keeping coils in position, etc for transformer up to 500 KVA complete all as specified and directed by Engr-In-Charge.

Re-insulation of heated / weak LV coils of transformer by super quality insulating materials, heating, varnishing , etc complete to improve IR value etc including taking down old coil complete all as directed by Engr-In-Charge.

S & F in repair of 90 degree lug boot for HT terminals on each phase for protection of the HT termainals from moisture/dust etc complete all as specified and as directed.

S & F in repair of complete power pack unit of 220 V/110 V AC input and 110 V DC output fixed inside the HT VCB/RMU unit complet for back up of the tripping system of Circuit Breaker etc. complete all as specified and as directed.

All as per Item No.14 above but with self powered relay Make: CG Model CGI-14S or ABB its equivalant model of make as per Appx 'B' and approved by GE.

S & F in repair of Tripping coil 110 V DC and any model for existing HT VCB panels complete all as specified and directed by Engr-In-Charge.

S & F in repair of auotmatic spring charge motor of the Vacuum circuit breaker of exisiting make and model complete all as specified and directed by Engr-In-Charge.

S & F in repair of Epoxy Current Transformer (CT) with ratio of 100-50/5 or 60-30/5 with Burden -15kA, Class 1, 5P10 as per exisiting make and model complete all as specified and as directed by Engr-In-Charge.

S & F in repair of Insulating Polymat ISI marked for 11/12 kV Installations in substations as per OEM specifications complete all as specified and as directed by Engr-In-Charge.

S & F in repair of replacement of Air break switch (GOD & DO) Triple pole, mechanically gang operated Air Brack Switch, mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating upto 200 amps, 11000 Volts grade complete all as specified and directed by Engr-In-Charge.

S & F cable jointing kit for 11 KV (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 size 95/120 sqmm complete all as specified and directed by Engr-In-Charge.

Supply, jointing and testing in repair of outdoor type cable termination (heat shrinkable) suitable for 3 core, 11KV/underground electric cable, XLPE cable of size 95/120 sqmm, extra terminal length as required on ground complete all as specified and directed by Engr-In-Charge.

Supply, jointing and testing in repair of cable joint kit of 11KV grade cable for straight through heat shrinkable type joint complete with jointing material and accessories suitable for 3 core, XLPE armoured aluminum conductor cable of size 95/120 sqmm complete all as specified and directed by Engr-In-Charge.

S & F in repair of galvanised steel water tubing, light grade, IS-1239 marked with all fittings, IS marked and laind in trenches under roads, through drains, fixed to poles/walls with required size flat iron clamp bolts, nuts and washers for cable protection of 100mm dia including taking out old/existing pipes complete all as specified and directed.

S & F in repair of pin type, procelicien, 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 11000V grade complete all as specified and directed by Engr-In-Charge.

M & L for cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections 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 one primer coat, one under coat and one finishing coat of paint complete all as specified and directed by Engr-In-Charge.

M & L for dehydration/filtration of transformer oil/ stabilizer oil / HT oil switch up to 630 Amps capacity of exisitng transformer/ stabilizer of 30 kVA to 500 kVA installed at site/ HT oil switch up to 400 Amps capacity installed at various locations, with portable plant to improve the dielectric strength 40 to 60 kV during filling of oil, after intial filtraction, including testing of dielectric strength after dehydration at site complete all as specified and directed by Engr-In-Charge . Note: contractor shall produce the transformer oil tests showing oil test results before and after filteration consisting of transformer details all as directed.

Supply & filling of transformer oil in transformer / voltage stabilizer in situ/ at site for toppin up the level of oil having dielectric strength 40-60 kV during fillin after initial filtraction conforming to IS-335 including taking down old u/s oil complete all as specified and directed by Engr-In-Charge. Note: Transformer oil shall be supplied in sealed container. Make: Power/ Insole/ Universal or equivalent make as per Appx 'B'.

S & F in repair IC Based Electronic circuit board for 500 KVA capacity servo voltage stabilizer (PCB) of make Jindal complete all as specified and directed by Engr-In-Charge.

S & F in repair servo motor for servo operation of capacity 3 Kg torque. Make as per exisiting up to 500 kVA

S&F in repair Trigger/ Control transformer of suitable for upto 500 KVA capacity for servo voltage stabilizer complete all as specified and as directed.

Excavation in trenches n.exc 1.5 m depth and n.exc 1.5m in width, n.exc 10 sqm on plan for foundation etc and getting out in soft / loose soil all as specified and directed.

Returning filling in soil including spreading leveling watering & well ramming in layers not exceeding 25 cm thick complete all as specified and as directed.

Removing excavated soil to a distance n.exc 50 m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and as directed.

M & L for providing dry river sand as in cushioning to under ground cable including punning down of sand in layer all as specified and directed by Engg-in-Charge. Note: For measurement purpose punned thickness of sand will be considered.

Supply and Lay factory made un reinforced precast concrete cable cover HV Type I with flat size 300mm X 180mm X 40mm laid traverse to cable complete all as specified and directed.

Taking out unreinforced precast concrete cable covers class HV type-I, flat size 300 x 180 x 40mm laid traverse to cable complete all as specified and directed.

Laying only unreinforced precast concrete cable covers class HV type-I, flat size 300 x 180 x 40mm laid traverse to cable complete all as specified and directed.

Supply & lay in trenches / duct passing through pipe / duct or fixed on pole and connecting and testing XLPE insulated, PVC inner sheathed, armoured with galvanised steel strip or wire, earthed type, heavy duty, HT underground cable ISI marked with aluminium multistranded conductor 11000 volt grade of size 120 Sqmm 3 core complete all as specified and directed.

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 / 120 Sqmm all as directed by Eng-In-charge.

M & L for relaying the serviceable HT 11 KV 3 core 95/120 sqmm of size cable in trenches/fixed to poles/wall, XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable( HT ), 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.

M & L for erection of Precast HT cable route / cable path indicator,made out of PCC 1:2:4 ,type B0,12.5 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 c, placed at interval of every 30m ,complete all as specified and as directed by Engr-in-Charge.

S & F in repair Disc type, porcelain, 145 mm high and 255 mm dia ball and socket type, white, brown or green, 'two in series' assembly for tension with tension clamps for conductors, working pressure 11000 volts grade all as specified and directed by Engr-in-Charge.

M & L for in replacement of earthing complete with galvanised steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground vertically to depth not less than 2.25m below ground level with top edge of earth plate at a depth not less than 1.5m below normal ground level connected to and including GI strip of 32 x 6mm as earth lead upto 7.5m long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn HDPE protection pipe light grade of 32/40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4) type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15mm bore Sch.40, wire mesh and lugs, test point etc. complete all as directed by Engr-In-Charge. Note: GI strip exceeding 7.5m long shall be measured and paid seperately.

NAVIN K LAKHANI (BID ID -3101121)