REPAIRS OVERHAULING FILTERATION AND REPLACEMENT WORKS TO HT SWITCHGEARS TRANSFORMERS HT CABLES AND CONNECTED ITEMS AT LRDE UNDER GE I R an D WESTBENGALURU

Amount

Material and Labour for finding 11KV HT UG cable fault / defect of any size from the positions accurately using cable fault locator machine vehicle including finding of cable route as applicable on the ground, transportation, testing, restoring of the supply in all respects and commissioning etc complete all as specified and as directed by Engineer-in-charge.Note - 1) Earth work from cable fault position to nearesst cable loop as per site and cable joints as per site requirement shall be measured and paid separately under relevant item of the schedule.

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 m in depth for taking out cables/laying of cables etc and getting out in hard / dense soil carefully all as specified and as directed by Engr - in - charge. Note : Cable protection covers kept a side properly for reuse while relaying of UG cables.

Returning filling in including spreading, levelling, watering and well ramming in layers n-exc 25 cms complete all as specified and directed by Engr-in-charge.

Removing excavated soil to a distance n-exc 50 mtr and depositing where directed at a level n-exc 1.5 mtr above the starting point complete all as specified and directed by Engr-in-charge.

Cutting of bituminous road / floor for taking up existing cable / laying of new cable /relaying of U/G cables / GI Pipe / making good duct etc not exceeding 1.5 metres wide and not exceeding 1.5 metres deep for refilling / with material and, watering well ramming / compacting and making good with PCC 1;3;6,type C-1complete all as specified and directed by Engineer-in-charge. Note : PCC 1:3:6 shall be measured and paid under the respective item of the work.

Material and labour for PCC 1:3:6 type C-2 in floors for ducts / floors / road etc all as per site requirement complete as specified and directed by Engineer-in-charge.

Screened excavated earth (passing through 12 mm square mesh), laying the same riddled earth in cable trenches for cable protection under and above cable all as specified in SSR - 1 (Clause No. 1975) complete all as per site requirements and directed by Engineer-in-Charge. Note:- Only punned thickness shall be measured for payment purpose

Supplying and laying factory made un-reinforced precast concrete cable cover, class HV,type 1, Flat of size 300mm x 180mm x 40mm confirming to IS specifications for cable protection complete all as specified and directed by Engr-in-charge.

Relaying of reusable covers as obtained against excavation here-in-before in cable trenches complete all as specified and directed by Engr-in-charge.

Supply and filling river sand inside of the sub station ducts for cable protections etc complete all as specified and directed Engineer-in-charge.

Supply and lay pipe galvanised iron tubing light grade of 100 mm dia in trenches / near panel /on wall using GI bend, other fittings etc all as per site requirement complete all as specified and directed by Engr-in-charge.

Disconnecting, taking down / up existing HT UG Cable of size 95 sqmm to 185 sqmm 3 core from the various existing ducts / trenches / locatons etc and serviceable cable kept a side carefully for incorporating in the site complete all as specified and as directed by Engineer-in-charge. Note- Earth work shall be measured and paid separately.

Supply,laying,testing for replacement (against item No 12 here-in-before) XLPE insulated, screen, PVC bedded, galvanised steel strip electric power cables (heavy duty) with aluminium conductor, 11000 volts, grade cross sectional area 185 sq.mm 3 core complete all as specified and directed by Engineer - in - charge.

Supply,laying,testing for replacement (against item No 12 here-in-before) XLPE insulated, screen, PVC bedded, galvanised steel strip electric power cables (heavy duty) with aluminium conductor, 11000 volts, grade cross sectional area 120 sq.mm 3 core complete all as specified and directed by Engineer - in - charge.

Relaying of serviceable portion of XLPE insulated HT heavy duty aluminium conductor, 11000 volts grade of size 95 sqmm to 185 sqmm as obtained against item No 12 here-in-before, testing complete all as per site requirement complete all as specified and directed by Engineer - in - charge.

Supply and fix jointing kit for 11 KV grade cable for indoor type end termination through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium connductor cable of size 120 sq mm - 185 sq mm including taking up old unserviceable cable joint, cutting/taking out joint etc complete all as specified and as directed by Engineer - in - charge.

Supply and jointing Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint out door purpose complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm - 185 sqmm 3 core complete all as specified and directed by Engineer-in- Charge.

Disconnection of HT / LT connections of the transformer of capacity 500 - 750 KVA , making good distrubed surfaces to match with the adjoining surfaces, relocation to other sub station of LRDE area including transporting, using crane if required and connecting HT cables, testing complete all as directed by Engineer-in-charge.

Disconnection of LT MS duct / cable etc complete along with Aluminium bus bar system in between Transformer and LT panel as per existing on the site complete carefully and making good distrubed surfaces to match with the adjoining surfaces, relocation to other sub station of LRDE area including transporting, using crane if required and connecting HT cables, testing complete all as directed by Engineer-in-charge.

Material and Labour for De-hydration and fillteration of transformer oil of various type / size through on load mobile stream line or high vacuum oil filtration plant by using required necessary tools & plants as per site conditions to carrying out filteration of oil for desired electric strength not less than 60 KV at 2.5 mm gap test complete all as specified and directed by Engineer-in- Charge. Note : For top up oil upto conservator recommended make shall be measured and paid separately under relevent item here-in-after.

Supply and filling transformer oil for topping up or replacement of unserviceable transformer oil for transformer of various capacity / HT switch gear located in the various installations including disconnecting supply and reconnecting as per site conditions complete all as specified and as directed by Engineer - in - charge.

Material and Labour for disconnecting the HT & LT supply of Transformer any type and make as located on site, removing of top cover, clean / flushing the core assembly by applying new filtered oil through pressure and checking for loose connections of tap changer point, Connecting terminals and oil leakages at all joints.replacing of gaskets,oil seal of HT & LT Insulator bushings,HT terminal studs and Acrylic sheet indicator along with rubber gasket after checking the insulation Resistance value by suitable rating megger and the IR Value of HT to earth and LT to earth in presence of Engineer-in-charge. reconnect HT & LT Supply line,commissioning in all respects complete all as specified and directed by Engineer- in-charge,The transformers details are as under : Note - (1) Spares such as HT / LT insulator,bush,terminal,brass studs and gasket shall be measured & paid separately as supply only under relevant items and labour elment included in the quoted rate. 2000 KVA Transformer, Location - Old MED

All as per the ser Item No 22 here above but 1000 KVA transformer Location - L star

All as per the ser Item No 22 here above but 750 / 800 KVA Transformers Location - A3MTDC (02 Nos), Admin (02 Nos) and GM (01 No).

All as per the ser Item No 22 here above but 500 KVA transformer Location - PCB

All as per the ser Item No 22 here above but 400 KVA Transformers Location - DRC (02 Nos), GMP (02 Nos) and Q RAG (01No)

All as per the ser Item No 22 here above but 160 / 200 KVA Transformers Location - Q RAG (02 Nos), DRC (01 No) and RSH (01 No)

Supply only set of gasket for top cover, conservator,bucholz relay, breather etc for transformer capacity upto 400 KVA complete all as directed by Engineer-in-charge.

Supply only set of gasket for top cover, conservator,bucholz relay, breather etc for transformer capacity 500 KVA to 1000 KVA complete all as directed by Engineer-in-charge.

Supply only set of gasket for top cover, conservator,bucholz relay, breather etc for transformer capacity 2000 KVA complete all as directed by Engineer-in-charge.

Supply only Set of 3 HV rods along with oil gasket & oil seal and set of 4 LT Terminal rod along with gasket and oil seal for Transformer of capacity 200 KVA complete all as directed by Engineer-in-charge.

Supply only Set of 3 HV rods along with oil gasket & oil seal and set of 4 LT Terminal rod along with gasket and oil seal for Transformer of capacity 400 KVA / 500 KVA complete all as directed by Engineer-in-charge.

Supply only Set of 3 HV rods along with oil gasket & oil seal and set of 4 LT Terminal rod along with gasket and oil seal for Transformer of capacity 750 / 800 KVA complete all as directed by Engineer-in-charge.

Supply only Set of 3 HV rods along with oil gasket & oil seal and set of 4 LT Terminal rod along with gasket and oil seal for Transformer of capacity 1000 KVA to 2000 KVA complete all as directed by Engineer-in-charge.

Supply and fill best quality dehydrating agent (silica gel) of power distribution transformers including taking out unserviceable Silica gel complete all as specified and as directed by Engineer-in-charge.

Supply and fixing in replacement of breather assembly tranparent PVC body with top and bottom portion pressed with metallic cover,filled with silica gel and suitable for fixing on existing pipe of size 15/20/25 mm dia as per site requirement/capacity of transformer upto 400 KVA Complete all as specified and directed by Engineer-in-Charge.

Supply and fixing in replacement of breather assembly tranparent MS body with top and bottom portion pressed with metallic cover,filled with silica gel blue in colour and suitable for fixing on existing pipe of size 15/20/25 mm dia as per site requirement / capacity of transformer above 400 KVA and upto 1000 KVA complete all as specified and directed by Engineer-in-Charge.

Suppyl and fixing for replacement of oil temprature gauge upto 1000 KVA transformer complete all as directed by Engineer-in-charge.

Suppyl and fixing for replacement gate valve GM ISI marked with iron wheel head , screwed both ends for iron pipe or for socket or union for 25 mm dia complete suitable for various capacities transformer complete all as specified and directed by Engineer-in-Charge..

Suppyl and fixing for replacement the Explosion vent diaphram suitable size as per site requirements complete all as specified and approved by Engineer-in-Charge..

Material and Labour for disconnecting the HT/LT connections from old transformer carefully, checking and dismantalling from plinth / foundation,removing from connected position and transporting to workshop with necessary tools & plants, vehicle and opening of transformer, checking winding carefully, rewinding / reinsulation etc as per requirements, transporting back to site testing and commisioning in the original location or other location with existing load all as per site requirements of transformer 400 KVA to 750 KVA Complete all as specified and directed by Engineer-in-Charge. Note : Rewinding charges shall be measured and paid separately under relevent item.

Taking out burnt primary winding in all respects, checking, dismantlling carefully, rewinding with the same enamelled copper winding wire properly along with provn of new best quality insulation material and varnishing heating complete of transformer capacity 400 to 750 KVA complete all as specified and directed by Engineer-in-Charge.

Taking out burnt secondary winding in all respects, checking, dismantlling carefully, rewinding with the same enamelled copper winding wire properly along with provn of new best quality insulation material and varnishing heating complete of transformer capacity 400 to 750 KVA complete all as specified and directed by Engineer-in-Charge.

Material and labour repairing / welding works to leaking fins / body of transformer and making the same leak proof in and including drain out transformer oil from the transformer tank as applicable store in dust free barrels / containers and heating oil with heating element to remove moisture particles before refilling in the transformer tank after welding / soldering works etc complete all as directed by Engineer-in-charge. Note : The quoted rate is inclusive for all works as required on the site for lifting oil removing from core and welding works to transformer etc

Material and labour for repairing, overhauling HT OCB 11 KV 400 Amps of any make / type by carrying out the following works and testing complete all as directed by Engineer-in-Charge. (i) Removal of HT OCB from the cubicle by disconnecting cable connections safely (ii) Removal of oil tank (iii) Draining of old oil, cleaning the tank and filling of new oil (iv) Cleaning of moving and fixed contact assemblies (v) checking the alignment of contacts (vi) Reassembling of oil tank (vii) checking of trip shaft assembly (viii) checking the mechanical ON/OFF operation of HT OCB Note : 1) Top up oil and other Spares as applicable shall be measured and paid separately as SUPPLY ONLY under relevent item and the quoted rate is inclusive for all other repairs, spares for proper functioning of OCB other than here-in-after mentioned spares. 2) The quoted firm is mandatory to visit site before quoting rates and extra amount shall be paid in this regards.

Supply only fixed Contacts and moving contacts suitable for MEI Make Circuit breaker as per site requirements complete all as specified and as directed by Engineer-in-Charge

Supply only trip shaft assembly suitable for MEI Make Circuit breaker as per site requirements complete all as specified and as directed by Engineer-in-Charge

Material and Labour for repairing, overhauling HT VCB 11 KV 400 Amps of any make / type as per site conditions and checking door lock system,checking for phase sequence , mechaniocal and electrical interlocking system, complete wiring checking of relays ,trip coil, spring charge motor , closing coil etc , carrying out the earth resistance testing and writing on earth pit the ohmic values,tightening the all the mechanical and electrical joints , writing with paint the feeder name, MES / SM NO and checking the functionality in position after servicing complete all as specified and directed Engineer-in-Charge.

Material and Labour for repairing, overhauling HT VCB 11 KV 630 Amps of any make / type as per site conditions and checking door lock system,checking for phase sequence , mechaniocal and electrical interlocking system, complete wiring checking of relays ,trip coil, spring charge motor , closing coil etc , carrying out the earth resistance testing and writing on earth pit the ohmic values,tightening the all the mechanical and electrical joints , writing with paint the feeder name, MES / SM NO and checking the functionality in position after servicing complete all as specified and directed Engineer-in-Charge.

Material and Labour for repairing, overhauling HT VCB 11 KV 800 Amps of any make / type as per site conditions and checking door lock system,checking for phase sequence , mechaniocal and electrical interlocking system, complete wiring checking of relays ,trip coil, spring charge motor , closing coil etc , carrying out the earth resistance testing and writing on earth pit the ohmic values,tightening the all the mechanical and electrical joints , writing with paint the feeder name, MES / SM NO and checking the functionality in position after servicing complete all as specified and directed Engineer-in-Charge.

Material and Labour for repairing, overhauling HT RMU 400 Amps of any make / type, 11 KV (02 Nos incoming and 01 No out going) for checking door lock system, mechaniocal and electrical interlocking system, complete wiring checking and carrying out earth resistance testing and writing on earth pit the ohmic values,tightening the all the mechanical and electrical joints , writing with paint the feeder name, MES / SM NO and checking the functionality in position after servicing complete all as specified and directed Engineer-in-Charge. Note for item No. 46 to 50 : - All minor Spares supply & fixininclusive in the quoted rate and labour element for items here-in-after mentioned inclusuve in the quoted rate

Material and Labour for calibration and testing of triping system of HT 11 KV panel by injecting fault current on primary side of CT/PT , setting the OL/inverse time /Earth fault level and ensure that HT breaker tripping system function properly as per relay setting and submit calibration test certificate duly signed by contractor complete all as directed by Engineer-in-Charge. Note : The job shall be paid twice in a contract period with an interval time of 6 months

Supply, installation, testing and commisioning of 1000 / 110 V Ratio 0.5 class Three phase Voltage transformer suitable ground requirements of circuit breaker complete all as directed by Engineer-in-charge

Supply, installation, testing and commisioning of 1000 / 110 V Ratio 1.0 class Three phase Voltage transformer suitable ground requirements of circuit breaker complete all as directed by Engineer-in-charge

Material and labour for checking, repairing, overhauling, repairing of burnt potential transformer (PT) 11 KV/110 V of any type including carring out the following works as per site conditions and testing complete all as directed by Engineer-in-Charge :- (i) Removing the PT from the HT switvh gear (ii) cleaning the fixed and moving contacts assemblies (iii) check the alignment of contact and reassembling and fix PT in original position (iv) Check the IR value of PT primary and secondary windings (v) Rewinding PT complete with best quality copper enamelled wire along with new insulation, rehecking the IR value of PT primary and secondary windings, testing in all respects (vi) Replacement of fuses, screws, nuts, bolts and other works shall be deemed to be included in the rate quoted and testing complete in all respects all as directed by Engineer-in-charge.

Supply and replacement of old and unserviceable phase indication lamps with LED 110 Volts suitable for HT switch gear including suitable rating control wiring complete all as directed Engineer-in-Charge.

Supply and replacement of old and unserviceable Voltmeter upto 15 KV analog type 110 Volts as per site, CTs ratio 150 / 5 Amps , 100 / 5 Amps , 50 / 5 Amps suitable for HT switch gear including suitable rating control wiring complete all as directed Engineer-in-Charge.

Supply and replacement of old and unserviceable Ammeter upto 100 Amps analog type 110 Volts as per site suitable for HT switch gear including suitable rating control wiring complete all as directed Engineer-in-Charge.

Supply, wiring, installing, testing and commissioning sealed maintenance free VRLA battery 2Volts suitable for power bank assembly of 24V 80 AH for HT switch gear including taking down the old unseviceable one from the existing locations complete all as directed. Make - Exide Model UPST 24 V - 80AH or techno equivalent model of make Luminious/Amron/Sukam/Microtek

Supply and replacement of old and unserviceable HT fuse 63 Amps suitable for SM-6 switch gears 11 KV complete as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and replacement of old and unserviceable HT fuse 32 Amps suitable for SM-6 switch gears 11 KV as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and fix in Replacement of Push Button with 1 NO + 1NC on existing HT Panel as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and fix in Replacement of Rotary switch for Local / Remote / Neutral / trip / Close function on existing HT Panel as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and replacement of HT 11 KV current transformer dual core epoxy insulation type suitable for existing CT ratio upto 150/5 as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and Replacement of closing coil complete with all accessories suitable for HT 11 KV Panel upto 800 Amps capacity as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and Replacement of tripping coil complete with all accessories suitable for HT 11 KV Panel upto 800 Amps capacity as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and replacement of CAM wheel assembly complete suitable for HT 11 KV panel upto 800 Amps capacity as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and replacement of spring charging motor complete suitable for HT 11 KV panel upto 800 Amps capacity as per site requirements testing and commissioning complete all as directed by Engineer-in-charge

Supply and Replacement of spring charging gear assembly complete with all accessories as per site requirements suitable for HT 11 KV panel upto 800 Amps including testing and commissioning complete all as directed by Engineer-in-charge

Supply and installation for replacement 24V Open and Close shunt coils suitable for 11 KV 800 Amps Vacuum circuit breaker suitable for site requirements, testing complete all as directed by Engineer-in-charge.

Supply and installation rep[lacement JAW contacts and fixed contacts with pole bushing suitable for 11 KV 800 Amps Vacuum circuit breaker suitable for site requirements, testing complete all as directed by Engineer-in-charge.

Supply and installation for replacement JAW contacts suitable for Schneider Make HVX - X Type 11 KV 800 Amps Vacuum circuit breaker suitable for site requirements, testing complete all as directed by Engineer-in-charge.

Supply, fix and testing Automatic Dry powder Fire extinguisher complete ceiling mounted type 5 kg MAP ( Monoammonium Phosphate) 40% ABC MAP Dry chemical powder , working pressure to 12 bar, test pressure 24 bar with dry Nitrogen, rechargable type of ISI marked complete all as directed by Engineer-in-charge.

Suppyl and installation for replacement against defective vacuum interrupter complete 26 KA V2 complete suitable for Schneider make HVX - X Type 11 KV 800 Amps HT 11 KV VCB as per site requirements including testing and commissioning complete all as directed by Engineer-in-charge.

Suppyl and installation for replacement against defective vacuum interrupter housing complete suitable for Schneider make HVX - X Type 11 KV 800 Amps HT 11 KV VCB as per site requirements including testing and commissioning complete all as directed by Engineer-in-charge.

Taking down HT 11 KV Circuit breaker from the existing location of LRDE area by disconnecting HT cables carefully, relocation to other sub station of LRDE area in and including transport, crane and connecting HT cables, testing complete all as directed by Engineer-in-charge.

Material and Labour ROUNDUP HERBICIDE Chemical agent for grass killing on the earth surfaces nearer the E/M installations complete all as specified and directed Engineer-in-charge.

Material and labour graded coarse aggregate 40 mm graded loose stake, spreading in the E/M installations area complete all as specified and directed Engineer-in-charge.

Material and labour graded coarse aggregate 20 mm graded loose stake, spreading in the E/M installations area complete all as specified and directed Engineer-in-charge.

Material and labour for writing letters size of letter upto 1.5" using exterior enamel paint water proof as under mentioned sizes on existing LT Indoor panels / Outdoor feeder boxes located at various places based on present Incoming and Out going cable area connections duly checked by firm electricians on the ground etc in and including cleaning and preparing surfaces in all respect as per site requirement complete all as specified and as directed by Engr-in-charge.

All as per here-in-above item but size of letter above 2" inches complete all as specified and as directed by Engr-in-charge.

Material and Labour for Dismantling and taking down existing old damaged wall mounting diagram / sign / Message board of any type / size from existing locations and supply and fixing of new daigram /sign/ message board as per required size made out of perspex sheet with diagram / letter writing complete all as directed by Engineer-in-charge.

Material and labour earthing complete in positions with GI earth plate electrode of size 600mm x 600mm x 6mm thick buried directly in ground vertically to a depth of not less than 2.25 mtr below ground level , with top edge of the earth plate at a depth of not less than 1.5 mtr below ground connected to GI earth strip 32x6 mm by means of GI bolts and nuts,check nuts,washers watering pipe medium grade 20 mm and GI earth strip protected by GI pipe light grade 50 mm bore upto 7.5 mtr and connecting to HT / LT Switchgear etc as per site requirement including necessary excavation, earth work in any type of soil PCC (1:3:6) type C-1 earth chamber, 40 mm thick RCC Cover with 6 mm dia MS bars 10 cm C/C on both ways as reinforcement complete all as shown in electrical plate No. 3 of MES Schedule Part 1 complete all as specified and as directed by Engineer-in-charge. Note:(i) Quoted rate deemend to include necessary earth work PCC chamber, RCC cover, renforcement removal of surplus soil , site clearance etc. (ii) GI earth strip 32X6 mm , GI tubing light grade 50 mm dia upto 7.5 mtr deemed to be included the rate quoted by the contractor.(iii) Beyond 7.5 mtr the GI earth strip 32X6 mm & GI pipe light grade 50 mm dia shall be measured under relevant item of the schedule.

Material and labour GI Earth Strip 32mm X 6mm burried in ground / fixed on wall / floor as per site requirement for purpose of Beyond 7.5 meter measurement earthing strip complete all as specified and directed by Engineer-in-charge.

Material and labour GI tubing light grade 50 mm dia for protection of earthing GI earth strip 32mm x 6mm purpose buried on ground / fixed on wall / floors beyond 7.5 meter measurement complete all as specified and directed by Engineer-in-charge. Note for item Sl No. 1 to 85 : 1) If any E/M installation or connected items became breakdown, the contractor is responsible to loacate the problem/fault at site immidiately with his competent team on intimation by JE / Engineer-In-Charge and ensure that the fault rectified within 24 Hours or if any major repairs involved the contractor is responsible to made alternate arrangement to that area till permanently rectified fault as directed by Engineer-in-charge failing which an amount of Rs 500 /- per hour will be recovered as penal recovery from contractor dues payment after expiry of 48 hours. 2) The contractor shall have a visit on the ground before quoting their rates on all ibid items.

Sahara Engineers

Solar Electricals and Electronics

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