Transformers are designed for induction furnace. at furnace & submerged are furnace application
Magnetic circuit- lamination CRGO M3 toMS type
Electric circuit - electrolytic grade 99.9% owe copper with Transposition in LV call for current sharing in parallel conductors
Dielectric circuits - electric grade press paper, boards .ind mineral oil
Thermal circuit adequate cooling ducts are provided radially & axially for the smooth flow of oil internally. Radiators cooling bank? are provided for natural air cooling ONAN Additional fans for ONAF cooling. High current transformers are provided with OFW cooling
Specific features
Designed for trouble-free performance during surges & frequent Shot 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. 22kV. 33kV
Off-circuit tap changer to provide +/ 5% ; 7.5% & to 0% taps in steps of 2.5%
On load tap danger to provide +5% to 15% taps in slept 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 on-uniform insulated
Vector group Dyn 11,Ynd 11,Dd0y11
Continuous duty, double copper wound
Panting as per IS/IEC Standards
Both HV SIV side outdoor bushings/ cable box/bus ducts/bus bar riser*
Standard fittings as per IS/IEC standards
Protective devices
Buchholz relay with alarm and trip contact with shut off valves
Oil temperature indicator with alarm and nip contact
Winding temperature indicate with alarm and trip contact
Magnetic oil level gauge with alarm contact
Pressure relief valve with alarm and trip contact
Marshalling box to house oil temperature indicator and winding temperature indicator
Cooler units like oil to water heat exchanger pressure gauges, flow gauges, etc
Neutral current transformer
Optional accessories
Winding temperature Indicator and oil temperature indicator with remote indication