REPAIRS SERVICING TO HT SWITCH GEARS 66 KV 11 KV SF6 VCBOCB 66 KV GOS AND OVERHAULING OF 6611 KV TRANSFORMER AT 66 KV AT MAIN RECEIVING STATION NO I II UNDER GEI RD EAST BANGALORE

Amount

Material and Labour for maintenance, servicing & Oil Leakage arresting of 66/11 kV, 5/8 MVA Power Transformer, providing necessary gaskets, Oil Seals, cleaning, dusting, decarbonising, tightening loosened parts, including replacing worn out part copper studs, bolts nuts and washers replacing oil Seals, HT bush, gasket including unserviceable coil, replacing of defective minor items such as as and when required complete all as specified and as directed.Note:- The item spare parts oil to be replaced shall be measured and paid separately shall be deemed to be included in the unit rate, including decaning of old oil

Taking down old unserviceable DC power pack, Supply and fix DC power pack 230 V AC Input & output 110 / 30 V DC for energizing tripping and closing coil installed in VCB/OCB

Replacement of old unserviceable breather of power transformer 66 KV / 11 KV of capacity 5000/8000 KVA (capacity 5 Kg) fresh silica jel

Supply and fix GI strips of size 32 mm x 6mm for body earthing for the transformer 5MVA 66/11 KV and CTs, PTs out door including fabrication work such as bending, drilling making holes for connecting with welding works as directed including excavation and earth work and taking out the unserviceable strip complete all as specified and as directed.

Servicing of existing Fire Extinguisher & refilling of dry type fire extiguisher ever safe ABC stored pressure type with pressure 24 bar( 27 degree centigrade) and working pressure 12 bar at ( 27 degree centigrade) with capacity 0f 2 kgs to 50 kgs Capacity Cylinders complete all as specified & directed,with providing the Testing Certificate

Special earthing of 66/11 KV 5/8MVA transformer body earthing by cast iron pipe of length 3 meter with 4 inch dia, material and labor complete accessories buried directly in ground vertically to a depth of not less than 2.75metre below ground level and connected to GI earth strips 32x6 mm by means of welding. GI protection pipe 40mm bore medium grade and connected to main switch/earth bus bar including Magnesium sulphate, salt and coal mixture in each layers with IS specification including necessary earth work in any type of soil and PCC (1:3:6) type C1 (using 20mm graded stone aggregate) earth chamber, RCC (1:2:4) type B1, cover 40mm thick with 6mm dia MS bars complete all as specified and as directed. Notes: Rate quoted is deemed to include the cost of excavation and earth work, PCC pit, funnel and cover, GI strip

Material and labour for filtration of transformer oil of transformer including OLTC through high vacuum type filtration plant to extract moisture, carbon deposits, to achive and withstand 80 KV die electric strength for 1 min with an air gap of 2.5 mm including necessary testing before, after filtration, submission of test result, complete all as specified and as directed. for 5 MVA - 02 nos & 8 MVA - 01 no and 11/0.433 KV transformer of 250 KVA with providing the Testing Certificate

Supply and topping up of new transformer oil conforming to IS 335-1963 as amended duly filtered and tested to with stand die electric strength of 60 KV for one minute with air gap 2.5 mm of HT transformer, OCB's CT's MOCB's etc complete all as specified and as directed. Make: Electrol / Servo

Taking down old unserviceable CT Supply install testing and commissioning of CTs 66 KV class for following ratio out door type oil immersed as per IS 2705 with insulators electrical connection as per manufacturers instruction complete CT shall be rated voltage of 72.5 KV accuracy PS Class for REF class 1 for metering 5P-10 for protection Ratio 150-75/1-1-1 Amp, Make: LAMCO / ABB / SCHNEIDER

Taking down old unserviceable CT Supply install testing and commissioning of CTs 66 KV class for foiilwing ratio out door type oil immersed as per IS 2705 with insulators electrical connection as per manufacturers instruction complete CT shall be rated voltage of 72.5 KV accuracy PS Class for REF class 1 for metering 5P-10 for protection Ratio 200-100/1-1-1 Amp, Make: LAMCO / ABB / SCHNEIDER

Supply & fix in replacement of old unserviceable Lighting arrestor 69 KV, Make: LAMCO/ABB/SCHNEIDER

Material and labour for servicing OLTC (on load top changing) system of 5/8 MVA, 66/ 11 KV power transformer after draining out transformer oil cleaning and checking the entire system, checking all moving contact portions, replacement of worn-out fixed or Roller contacts, resistor and Top gasket cleaning and checking of hylam barrier sheet (3nos) cleaning and checking of main driven shaft, all mechanical parts of driving mechanism, greasing where required for smooth operation, replacement of worn out brass nuts, tightening of gears, checking of entire system complete all as specified and as directed. (Note: Dehydration of oil, and spares required shall be measured and paid separately)

Supply only OLTC Spares required for 5 MVA Transformer

Fixed contacts

Roller contacts- 3 sets

Resistor

Top gasket

Testing of outdoor SF-6 circuit breaker of rated voltage 66 KV for 5/8 MVA 66 KV transformer by checking the three pole SF6 breaker closing & Tripping Timing complete, Overhauling motor and gear mechanism, repair to all power contactor 1100 volts, and testing the control cables and cable connection for the smooth functioning of system complete all as specified and as directed. all as specified and as directed.

Supply and fix in replacement of old unserviceable PT with new potential transformer resin cast epoxy with protective enclosure of ratio 11 KV/RT3/110V/RT3/110V/RT3 Class 1.0/3P, Burden 100VA/50VA Voltage Factor 1.2 continuous / 1.5 for 30 seconds. ILV 12/28/75 KVP. Ins class B Ref Std IS : 3156/1992 One end earthed type with one No HRC fuse on HV side.Note :Primary Neutral to be solidly earthed including removing of old unserviceable PTs. Make : KALPA / INSTRANS

Supply & Fixing of Tripping coil for 11 KV 400/800 Amp VCB 30/110 V DC including taking out old unserviceable coil complete all as specified and as directed.

Supply & Fixing of Closing coil for 11 KV 400/800 Amp VCB 30/110 V DC including taking out old unserviceable coil complete all as specified and as directed.

Supply & Fixing of spring charging motor for 11 KV VCB including taking out old unserviceable.

Supply & Fix of Master Tripping Relay rating of 24 / 30 / 110 V dc for the existing HT VCB/OCB/RMU 11 KV Panels complete all as specified and as directed, Make: EASUN REYROLLE / C&S

Supply & fix tripping & closing coil with assembly for 66 KV SF6 breaker DC 110 V 100 W including taking out old unserviceable coil assembly, complete all as specified & directed, as per exsiting

Taking down old unserviceable PT, Supply and fixing in replacement of PT with new potential transformer oil Cooled with protective enclosure of ratio 66 KV/ 110 V /RT3/110V/RT3 Class 1.0/3P, Burden 100 VA/50 VA including removing of old unserviceable PTs. Make: LAMCO/ABB/SCHNEIDER

Supply & fix in replacement of old unserviceable CT with new CT 11 KV, CT ratio 300 / 5 -5 - 1 A for 5 MVA Transformer Additional control relay panel for protection complete all as specified and as directed. Make: KALPA/ INSTRANS

Supply & fix in replacement of old unserviceable CT with new CT 11 KV, CT ratio 400 / 5 -5 - 1 A for 8 MVA Transformer Additional control relay panel for protection complete all as specified and as directed. Make: KALPA/ INSTRANS

Supply and fix heat shrinkable HT 11KV out door type cable end termination suitable for XLPE cable of 3 core 300 sq mm earth system with necessary jointing material and labour termination kit including connection etc complete all as specified and as directed. Make: RAYCHEM/MSEAL/DENSON

Supply and fix heat shrinkable HT 11KV out door type straight through joint suitable for XLPE cable of 3 core 300 Sqmm earth system with necessary jointing material kit including connection etc. complete all as specified and as directed. Make RAYCHEM/MSEAL/DENSON

Supplying of Vaccum Interupter Bottle for the existing HT VCB for including taking out old unserviceable Vaccum Interupter Bottle complete all as specified and as directed

Supply and fix heat shrinkable HT 11KV out door type cable end termination suitable for XLPE cable of 3 core 185 sq mm earth system with necessary jointing material and labour termination kit including connection etc complete all as specified and as directed. Make: RAYCHEM/MSEAL/DENSON

Maintenance and servicing of 66 KV GOS, cleaning of carbon pits, greasing, checking proper alignment, lubrication with petroleum gel/CTC including replacing of defective minor items as and when required, Testing smooth operation with electrically driven motor mechanism complete all as specified and as directed.

Servicing and Testing of Indoor floor mounted remote control cubicle RTCC panel of by testing remote tap position indicator meter, tap changer in progress signal lamp with belt. Raise / lower push buttons for remote operation. Supply on / off indicating lamps, control cable and cable connection all as directed by the Engineer-in-Charge at site

Material and labour for painting all steel poles, all steel structures, complete with cross arm, lightening arresters, GOS structures, Busbars, PT/CT structures, SF6/MOCB structures, insulator supporting structures etc with two coat of synthetic enameled paint of existing colour including filling cavities with filler after cleaning dust at 66 KV MRS I complete all as specified and as directed.

Material and labour for painting of 5/8 MVA Transformer complete with cross arm, Busbars, insulator supporting structures etc with two coat of synthetic enameled paint of existing colour including filling cavities with filler after cleaning dust at 66 KV MRS complete all as specified and as directed.

Testing of power transformer 66 KV / 11 KV of capacity 5000 KVA/ 8000 KVA by the authorized company representative and test certificate shall be furnished. All as directed by the Engineer-in-Charge (a) Insulation resistance test (b) Oil temperature alarm trip (c) Winding temperature alarm trip (d) Bucholtz relay alarm trip (e) Low oil level alarm trip (MOG) (f) Vector group (g) Di-electric test of transformer oil (h) Short circuit test (j) Transformer ratio test (TRT) (k) Magnetic core balance test (MBT)

Material and labour for replacement of U/S LED Flood Light with new LED Flood lights 120 watts.

Replacement of unserviceable existing make and model IDMT relay numerical non directional over current and earth fault relay with communication feature (RS 485) with full automation system type Argus, Aux voltage 110 volt DC should comprise of the following feature :- (a) Three phase over current and one earth fault (b) High set - low set (c) RS-485 with full communication system (d) Multi characteristic for both over current and earth fault, Make: L&T / SCHNEIDER / SEIMENS / ABB / C&S

Supply & Fix of Multi Data Meter, measuring Voltage, Current, PF, HZ, KWH, KVAH, KVARH for out going various feeders to different Labs, Make: SCHNEIDER / ELMEASURE

Demolition of reinforced cement concrete as in man hole cover slabs, beams , and similar work including cutting, reinformcement to faciliate demolition.

Pre-cast reinforced cement concrete 1:2:4 type B-1 using 20 mm gradced stone aggregate in manhole cover / slabs and placing in position and set in cement mortar (1:4) including necessary form work complete all as specified and directed.

M&L Mild steel TMT bars 10mm dia and over, cut to length , bent to shape required , including cranking , bending spirally for hooping for columns and binding with and including mild steel wire (annealed) , not less than 0.9 mm dia, complete all as specified.

Supplying, spreading & leveling stone aggregate of 20 mm size to the existing sub station all as specified and as directed.

Supply & Fix of 66 KV Grade Aluminum Pad Clamps

Supply & Fix of 66 KV Grade Lightning Arrestor Clamps

Supply & Fix of 66 KV Grade Current Transformer Clamps

Supply & Fix of 66 KV Grade Potential Transformer Clamps

Supply & Fix of 66 KV Grade 'T' Clamps

Supply & Fix of 66 KV Grade Flexible Bus Joints

Supply & Fix of S/S Bolts, Nuts & Washers for the existing structures & etc

Opening dismantling of Mechanical moving part of existing 66 KV SF6 like ratchet wheel assembly with stopper roller and ratchet small wheel assembly of CG make and replace the same with new assembly for proper functioning the same and testing complete after replacement for entire satisfaction of Engr-in- charge all as specified and directed.

Supply and fix HT spout bussing for VCB HT 11 KV, busbar side including taking out old unserviceable bushing complete all as specified and directed.

Supply and fix Flanged Gate Valve Size 100 mm dia for the existing Transformer for including taking out old unserviceable Valves complete all as specified and as directed

Supply and fix Flanged Gate Valve Size 50 mm dia for the existing Transformer for including taking out old unserviceable Valves complete all as specified and as directed

Supply and fix Gate Valve Size 25 mm dia for the existing Transformer for including taking out old unserviceable Valves complete all as specified and as directed