REPAIRS REPLACEMENT OF INSULATORS VCB RMU PANELS MAINTENANCE OF TRANSFORMERS AND TWO POLE STRUCTURE AND EARTH PITS AND ALLIED WORKS AT AF STN MOTHALA UNDER GE AF NALIYA

Amount

M&L for maintenance / servicing 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. 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 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 EIC (Note :(i) Spares, Rewinding of transformer,reinsulating & heating if required will be measured and paid separately under respective Sch'A' items

Supply only Top cover gasket made up of 5 mm thick cork sheet.

Supply only HT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347.

Supply only LT bushing, porcelain vitreous brown body 1100 V grade as per IS 3347.

Supply only HT brass studs along with washers for one terminal 11 KV transformer.

Supply only LT brass studs along with washers for one terminal 1100 Volts grade transformers.

Supply only Breather assembly complete with silica GEL of make Omkar/Kamal

Supply only Temp level indicator including its bolts, nuts, gasket etc complete.

M & L in repair of Rewinding old / burnt out HT/LT coils 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.

M & L in repair Re-insulation of heated / weak LV coils of transformer by super quality insulating materials, heating, varnishing , etc complete to improve IR value etc complete all as directed by EIC.

M & L 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.

Supply & Fix 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.14.00 above but with self powered relay Make: CG Model CGI-14S or ABB its equivalent model as approved by GE

Replacment of Tripping coil 110 V DC and any model for existing HT VCB panels complete all as specified and directed.

M&L in Replacement of auotmatic spring charge motor of the Vacuum circuit breaker of exisiting make and model complete all as specified and directed.

Supply & Fix 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.

Supply and Lay 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.

S & F in 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.

Supply, jointing and testing in repair of indoor type cable termination (heat shrinkable) suitable for 3 core, 11 KV / underground electric cable, XLPE cable of size 120 sqmm extra terminal length as reqired on ground complete all as Specifeid and directed.

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

Supply ,jointing and testing in reapir of cable joint kit of 11 KV grade cable for straight through heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size 120 sqmm, complete all as specified and directed.

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

S & F in repair of 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 11000 volts grade

S & F in repair of 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 all as directed.

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. 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 in repair 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 complete all as specified and directed. Note: transformer oil shall be supplied in sealed container.

Supply & Fix in repair of IC Based Electronic circuit board for servo voltage stabilizer (PCB) of Make : Jindal stablizer of capacity up to 500 KVA

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

Supply & Fix in repair of Trigger/ Control transformer of suitable capacity for servo voltage stabilizer complete all as specified and as directed.

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 directed by Engineer-in-Charge.

Returning filling in soil and including spreading leveling watering and well ramming in layers n.exc. 25 cm thick

Removing excavated soil to a distance n.exc. 50 mtr and depositing where directed at a level n.exc. 1.5m above the starting points.

M&L for sand cushioning for UG cables using dry sand; gently punning down all as directed and specified. ( Note : For measurement purpose punned thickness shall be considered)

M & L in replacement of unreinforced precast concrete cable covers CLASS HV type I, flat size 300 x 180 x 40 mm laid transverse to cable.

Taking out unreinforced precast concrete cable covers CLASS HV type I, flat size 300 x 180 x 40 mm laid transverse to cable.

Laying only unreinforced precast concrete cable covers CLASS HV type I, flat size 300 x 180 x 40 mm laid transverse to cable.

Supply & Fix in replcement of HT 11 KV 3 core 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 120 Sqmm x 3 core all as specified and directed by EIC.(Note : (i) Excavation, earthwork, cable joints, sand coushing & cable cover will be measured and paid separately if required

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 Engg in charge.

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 EIC.(Note : (i) 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 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 c, placed at interval of every 30 M ,complete all as specified and as directed by Engr-in-Charge.

S & F Disc type insulator, porcelain, vitreous 145mm high and 255mm 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 directed by EIC.

NILESH SUBHASH KARALE

NAVIN K LAKHANI