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| 1 | Dismantlingexisting 33 KV HT MOCB three phase cycles 750 MVA,Amps switch gear unit 750 MVA Rupting capacity and depositing to AGE E/M Yard. |
| 2 | DismantlingexistingCT, PT from sub station anddepositing to AGE E/M Yard. |
| 3 | Dismantling existing 33/11 KV step down power transformer 3 phase, 50 cycle capacity 3.15 MVA and depositing to AGE E/M Yard. |
| 4 | Taking out existing conductor & supply and fixing single core AAACconductor of size 100 sqmm including lugs and connecting accessoriescomplete all as specified and directed. |
| 5 | Supply, insatllation ,Testing and commissioning3150 KVA power transformer, HT33 K V Secondary 11KV HT, 3 phase, 50 Hz, oil cooled, oil immersed double copper wound outdoor type step down transformer complete with first filling, filtered & dehydrated transformer oil of IS: 2026, ISI marked and other standard fittings / accessories and 17 position on load tap changer (oltc) (tapping range +5% to -15% in steps of 1.25% each) with remote tap cubical changer (rtcc) panel & automatic voltage regulator (avr)with vector group dyn-11 includingprovision of all necessary / standard fittings mainly comprising of:- a ) On load Tap changer b) Remote Tap cubical charger Panel c ) Automatic voltage regulater , d )HV bare bushing,LV side cable box , e )buchholz Relay ( having contact for Alarm & Trip), f ) OTI ( Having contact for Alarm & Trip) , g ) WTI ( having contact for alarm & trip) h )Marshalling box ( Having TTB only)(k) Oil Level gauge.(l) Oil Drain and filter valve (m) Oil filter hole with cap/plug with connections complete.(n) Lifting Lugs(o) Air Relief valve plug |
| 6 | Item No 5 Contd/... (p) Four plain solid cast steel detachable rollers.(q) First fill of fresh oil conforming to relevant IS and tested upto 40 KV dielectric strength.(r) Extra bushing for neutral outside the LT cable box for providing independant earthing for neutral.(s) Provision of 02 Nos of danger board 250x200mm size made out of 1.6 mm thick MS Plate, vitreous enameled white with letters, figures in marathi, Hindi and english of voltage and conventional skull and bones in signal red colour , one at HT side and other on LT side .Note : Rate quoted shall incudes Factory Testing, Freight,Transit Insurance, Toll tax and loding and unloading , Installation Testing , Commissioning and all misc charges. |
| 7 | Supply, install, commissioning and testing Control relay panel (CRP),CPRI approved size of panel as per CPRI Specification,double door floor mounted outdoor type,as per IP-54 grade,made out of CRCA sheet 3.15 mm thick of outer body, RYB indicater,internal wiring with suitable size of copper wire,panel should be dust proof,vermin proof,powder coated,locking should be screw type,mechanical type,inter locking,should have danger noticefor 11000 volt,AC,mounted on 50 x50 x6 mm angle iron frame having minimum 2 feet ground clearanceduly embedded in and including PCC block(1:2:4) type B1 foundation for fixing of panel complete including termination of all incoming and outgoing cables with suitable size thimbles/lugs andstainless steel glands Nuts & Bolts complete including dismantling & taking down existing panel all as specifid and directed incuding following accessories, a).Indicting lamps b). Ammeter digital - 01 Nos c). Voltmeter digital - 01 nos d). Ammeter selector switch-01 nos e). Voltmeter selectro switch -01 nos f). TNC switch, g). Numerical relaynon communicable non drawout 3 o/C+1 EF relay. h). Master trip relay eletromachanical -01 nos i). Transformer protection relay consisting OTI, WTI, Bucholes trip and alarm 3 element. |
| 8 | Item No 6 Contd/…. j). Breaker control switch non lekable k). Annunciator 12 windows 01 nosl). Hooter - 01 nosm). KWH Meter 01 nosn). CT, TBs ,MCBs , Fuses,o).Wiring 2.5 Sqmm for CT controlling with Color code. p).Control circuit voltage 30 voltq). Multifunctional Meter |
| 9 | Supply and installing commissioning and testing VCB 33KV as per IS standard, 25KA, 1250A Outdoor type .IP 65, CPRI approved,double dooroutdoor type,as per IP-65 grade,made out of CRCA sheet 3.15 mm thick of outer bodyPCVCB with support structure As per below specification.a). Circuit Breaker type -36PV25A Rating to IS 13118-1991/IEC56-1987.b).Breaking Capacity 25kA c). Current 1250A,d).Making Capacity 67kA pk, Frequency - 50 Hz.,e). Short time current -25kA for 1 Sec.No. of pole - 3 Nos.DC Component - 50%,f).BIL - 70/170 kvpOperating coil - 30 VDCAux Switch - 8 No + 8 N ammeter , g).voltmeter and of rating upto 630 Amps h). Spring charging motori). Contact resistance for pole as per IS standredj) . Breaker time testing/closing/Tripping/closing open coil test as per IS standredk). HV test as per IS standredl). IR testing as per IS testingm). Motor resistance test as per IS standredo) . Close/open coil p). Mechanisum operating test as per IS standredq).Auxullary switchr) . Control circuit tests) . Eletrical and mechanical operating testNote . All tests are mandatory andshall be carrtiedout at the time of commissioning through othorised represesentative and test reports shall be submitted to the department. |
| 10 | Supply,installation,Testing and commissining CURRENT TRANSFORMERsuitable for 33 KV, OUTDOOR Oil Cooled type ,IP 55,with Resin epoxy cast resin dry type and should be suitable for upright mounting on steel structure in outdoor switch yard with matchingto WBSEDCL standred base structure withfollowing specification1.RATIO - 200/ 5A 2. R. BURDEN-15 VA, 3. A. CLASS – 1.0 5p10 S, 4.Insulation 1992LEVEL-36 / 70 / 170 KV, Rated STC: 25kA /1S APPLICABLE STD - IS 2705 -1992,IEC 185,IEC 600446. Power freq withstand voltage CT can withstand during normal operation7. Lightning Impulse withstand voltage8. Short circuit time - 1 sec9. Highest system voltage - 36 KV10. Extended current rating - 120% max11. Installation - outdor12Rated short circuit -13 . Metering core - 14 .Protection core15 Temp Rise - ASper relevant IS/IEC16 .Gurantee - 5 (five) years from certified date of completion of contract. |
| 11 | Item No 8 Contd/... Following tests shall be carried our for Current Transformer as per IS Standard.a).Ratio testb).Polarity testc). HV testd).IR teste).Nee point testf). CT burben Testg). Class Testh). Protection testNote . All tests are mandatory andshall be carrtiedout at the time of commissioning through Authorised represesentative in presence of Engineer in Charge and test reports shall be submitted to the department. |
| 12 | Supply, install,Testing and commissioningPOTENTIAL TRANSFORMER, 33 KV, OUTDOOR typeOil immersed IP 55 with Resin epoxy cast resin dry type and should be suitable for upright mounting on steel structure in outdoor switch yard with matchingto WBSEDCL standred base structure withfollowing specificationa). Ratio: 33000 /Rt3/ 110/Rt3 V R.b). Burden: 50VA,c).Class:- Ad). Basic Insulation Level - 0.2 ,36/70/170 KV e) . Applicable Std: IS 3156/1992f). Fire and explosion resistance,low noise and high operation efficiencyg). Highest voltage - 36 KVh). rated voltage - 33 kvi). freq - 50 Hzj). Core Identification - Core 1- metering,Core 2 - Protectionk). Place of Installatio - Outdoorl). Primary terminal connector - Rigid type suitable for PT stug to dog ACSRm) .Gurantee - 5 (five) years from certified date of completion of Contract. |
| 13 | Item No 9 Contd/... Following tests shall be carried our for Current Transformer as per IS Standard.1.Ratio test2.Polarity test3. HV test4.IR test5.Nee point test6. CT burben Test7. Class Test8. Protection testNote . All tests are mandatory andshall be carrtiedout at the time of commissioning through Authorised represesentative in presence of Engineer-in-Charge and test reports shall be submitted to the department.. |
| 14 | Supply and fix HT 33 KV out door type gang operated air-break switch suitable for horizontal or vertical mounting fixed type complete with 9 insulators 33 KVand with earth switch upto 200/400 Amps with all fittings and accessories mounted on and steel channel frame, GI operating rod 25 mm dia of suitable length to work from ground, including locking arrangements , suitable for 33000 volts, 400 Amps current rating complete including dismantling existing one all as specified and as directed. |
| 15 | M & L for replacement ofSF6 copper Armed cable 12 core,2.5 Sqmm complete all as specified and directed. |
| 16 | Material and labour for earthing complete with copperearth plate electrode 600 x 600 x 3 mm thick, buried verticallyin ground (Each pit not less than 2.25 mtrs deep below normal ground level with top edge of plate not less than 1.50 M below normal ground level) connected to copper strip 20 x 3 mm, by means of bolts, nuts, and check nuts and washers etc encased in GI protection pipe 40 mm dia light grade pipe for protection ofearth strip both to be provided to the extet of 7.5 meters, all as shown on electrical plate No 3 of MES SSR - 2004 Part - I, GI protection pipe buried in ground, laid under floors / plinths or mixed on walls / pole etc or concealed in walls etc; with provision of mixture of charcoal dust and common salt packed upto minimum 150 mm all around the earth plate, including PCC 1:2:4 type B-1 earth pit with M.S angle iron frame, cast iron cover with locking arrangement, with GI 20 mm dia medium grade pipe and MS funnel with wire mesh for watering arrangement, including necessary excavation and earth work in any type of soil / strata and testing on completion complete all as specified and directed.Note:- i) Cost of copper strip 20 x 3mm and protection pipe 40 mm dia is deemmed to be included in rate quoted ii) Excavation and returning filling of Soil any type is deemed to be included in rates. |
