SPECIAL REPAIRS / REPLACEMENT OF UNSV BER MOCB TRANSFORMER AT 33 KV SUBSTATION SOLAPUR ROAD AND NEW KLP SUB STATION UNDER GE (N) AHILYANAGAR

Amount

Dismantling existing 33 KV HT MOCB three phase cycles 750 MVA, Amps switch gear unit 750 MVA Rupting capacity and depositing to AGE E/M Yard.

Dismantling existing CT, PT from sub station and depositing to AGE E/M Yard.

Dismantling existing 33/11 KV step down power transformer 3 phase, 50 cycle capacity 3.15 MVA and depositing to AGE E/M Yard.

Taking out existing conductor & supply and fixing single core AAAC conductor of size 100 sqmm including lugs and connecting accessories complete all as specified and directed.

Supply, insatllation ,Testing and commissioning 3150 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 including provision 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

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.

Item No 6 Contd/…. j). Breaker control switch non lekable k). Annunciator 12 windows 01 nos l). Hooter - 01 nos m). KWH Meter 01 nos n). CT, TBs ,MCBs , Fuses, o).Wiring 2.5 Sqmm for CT controlling with Color code. p).Control circuit voltage 30 volt q). Multifunctional Meter

Supply and installing commissioning and testing VCB 33KV as per IS standard, 25KA, 1250A Outdoor type .IP 65, CPRI approved,double door outdoor type,as per IP-65 grade,made out of CRCA sheet 3.15 mm thick of outer body PCVCB 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 motor i). Contact resistance for pole as per IS standred j) . Breaker time testing/closing/Tripping/closing open coil test as per IS standred k). HV test as per IS standred l). IR testing as per IS testing m). Motor resistance test as per IS standred o) . Close/open coil p). Mechanisum operating test as per IS standred q).Auxullary switch r) . Control circuit test s) . Eletrical and mechanical operating test Note . All tests are mandatory and shall be carrtied out at the time of commissioning through othorised represesentative and test reports shall be submitted to the department.

Supply,installation,Testing and commissining CURRENT TRANSFORMER suitable 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 matching to WBSEDCL standred base structure with following specification 1. 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 60044 6. Power freq withstand voltage CT can withstand during normal operation 7. Lightning Impulse withstand voltage 8. Short circuit time - 1 sec 9. Highest system voltage - 36 KV 10. Extended current rating - 120% max 11. Installation - outdor 12Rated short circuit - 13 . Metering core - 14 .Protection core 15 Temp Rise - ASper relevant IS/IEC 16 .Gurantee - 5 (five) years from certified date of completion of contract.

Item No 8 Contd/... Following tests shall be carried our for Current Transformer as per IS Standard. a).Ratio test b).Polarity test c). HV test d).IR test e).Nee point test f). CT burben Test g). Class Test h). Protection test Note . All tests are mandatory and shall be carrtied out at the time of commissioning through Authorised represesentative in presence of Engineer in Charge and test reports shall be submitted to the department.

Supply, install,Testing and commissioning POTENTIAL TRANSFORMER, 33 KV, OUTDOOR type Oil 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 matching to WBSEDCL standred base structure with following specification a). Ratio: 33000 /Rt3/ 110/Rt3 V R. b). Burden: 50VA, c). Class:- A d). Basic Insulation Level - 0.2 ,36/70/170 KV e) . Applicable Std: IS 3156/1992 f). Fire and explosion resistance,low noise and high operation efficiency g). Highest voltage - 36 KV h). rated voltage - 33 kv i). freq - 50 Hz j). Core Identification - Core 1- metering,Core 2 - Protection k). Place of Installatio - Outdoor l). Primary terminal connector - Rigid type suitable for PT stug to dog ACSR m) .Gurantee - 5 (five) years from certified date of completion of Contract.

Item No 9 Contd/... Following tests shall be carried our for Current Transformer as per IS Standard. 1.Ratio test 2.Polarity test 3. HV test 4.IR test 5.Nee point test 6. CT burben Test 7. Class Test 8. Protection test Note . All tests are mandatory and shall be carrtied out at the time of commissioning through Authorised represesentative in presence of Engineer-in-Charge and test reports shall be submitted to the department..

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 KV and 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.

M & L for replacement of SF6 copper Armed cable 12 core,2.5 Sqmm complete all as specified and directed.

Material and labour for earthing complete with copper earth plate electrode 600 x 600 x 3 mm thick, buried vertically in 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 of earth 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 3 mm 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.

OM SAI POWER SYSTEMS (BID ID -3431920)

M/S Kumar Contractors (BID ID -3429895)

M/S SANTOSH CONSTRUCTION CO (BID ID -3431445)