| Description : Supply Of Outdoor Type , Plinth Mounted, Distribution Transformer, Minimum Energy Efficiency Level 3 Of Rating 250 Kva, 3-phase, 11kv/415-240v,50hz, Oil Immersed, Non Sealed Type (transformer Tank Body And Cover Are Bolted), Copper Wound, Primary Winding In Delta And Secondary Winding In Star (vector Symbol- Dyn11), Onan Cooled Transformer, Conforming To Is 1180 (part1):2014 With Amendment Nos. 1,2,3,4 Or Latest, And Supplied With All Standard Fittings Mentioned In Clause 20.1 Of Is 1180 (part 1) Latest With Condition That Drain-cum-sampling Valve. Oil Temperature Indicator & Winding Temperature Indicators Will Be Provided As Per Clause 20.2 F) Of Is 1180 (part 1). Terminal Arrangement: The Transformers Shall Be Fitted On High Voltage And Low Voltage Sides Bushing Appropriate Voltage And Current Ratings., Low Voltage Side Cable End Box Required . The High Voltage Bushings (3 Nos.) Shall Conform To Is/ Iec 60137. The Low Voltage Bushings (4 Nos.) Shall Conform To Is 7421. Off-circuit Tap Changer (applicable For All Ratings Above 200 Kva) For Variation Of Hv Voltage From +5% To -10% In Steps Of 2.5%. Following Has To Be Submitted By Supplier Along With Supply Of Material: (i) Type Test Report Of Transformer Having Same Rating, Make (& Model If Any) And Design From Nabl Accredited Lab As Per Is: 1180 (part 1) Latest. (ii) Routine Test Certificates As Per Is: 1180 (part 1) Latest. (iii) Special Test Certificates As Per Clause 21.4 Sl. No. (a), (c), (d) & (e) Of Is:1180 (part 1) Latest. |
