• Universal Transformers

Furnace Duty Transformer

Universal Transformers offers a furnace duty transformer, designed for induction furnace, arc furnace and submerged arc furnace applications. Main features: magnetic circuit ? lamination CRGO M3 to M5 type; electric circuit ? electrolytic grade 99.9% pure copper with transposition in LV coil for current sharing in parallel conductors; dielectric circuits ? electric grade press paper, boards and mineral oil; thermal circuit ? adequate cooling ducts are provided radially and axially for the smooth flow of oil internally. Radiators cooling banks are provided for natural air cooling, high current transformers are provided with OFW cooling. Specific features: designed for trouble-free performance during surges and frequent short circuits; design conforms to IS 2026, IEC 60076, IS 12977 and other relevant standards; high current at low voltages; designed to withstand electrical impulses and thermal and dynamic stresses; optimum utilisation of active materials for compactness; modern manufacturing techniques ensure cost effectiveness, reliability and a long trouble-free performance. Specifications: 3-phase, 50 Hz in voltages of 11 kV, 22 kV, 33 kV; off-circuit tap changer to provide ?5%, ?7.5% and +5% to -10% taps in steps of 2.5%; on load tap changer to provide +5% to -15% taps in steps of 1.25% as standard range and also custom built for any other ranges; OLTC will be internally/externally mounted as per the requirement; class A, uniform/non-uniform insulated; vector group Dyn 11, Ynd 11, Dd0y1; continuous duty, double copper wound; painting as per IS/IEC standards; and both HV and LV side outdoor bushings/cable box/bus ducts/bus bar rises; standard fittings as per IS/IEC standards. Optional accessories: winding temperature indicator and oil temperature indicator with remote indication; and RTDs for winding temperature measurement.