Power Transformer
The power transfer is accompanied without frequency change. In an electronic system, the term power transformer is used to provide a number of AC supplies of several voltages and appropriate values of current from the public electricity supply.
Features:
- Designed for 25 years of trouble-free performance
- Design conforms to IS 2026, BS 171, IEC 76 and other relevant standards
- Low power loss and low noise
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Designed to withstand electrical impulses, thermal and dynamic stresses
- Optimum utilization of active materials for compactness
- HIGH PERFORMANCE WITH LIFE EXTENSION AND LOADING FLEXIBILITY
- Modern manufacturing techniques ensure cost effectiveness and reliability
Specifications:
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3 phase, 50 Hz in voltages of 11 kV, 22kV, 33kV,66 kV& 110 kV & 132 kV
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Off-circuit tap changer to provide ± 5 %, ± 7.5% & +5% to -10% taps in steps of 2.5%
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On load tap changer to provide +5% to -15% taps in steps of 1.25%, 1.7%, 10-21 % @@ 1.75% as standard range & also custom built for any other ranges, OLTC will be internally / externally mounted as per requirement Class A, uniform/non-uniform insulated
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Vector group Dyn 11,YNd 11,YNyn 0
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Continuous duty, double copper wound
- Painting as per IS/I EC standards
- Both HV & LV side outdoor bushings or cable boxes
- Cooling radiators/fans.
- Standard fittings as per IS/IEC standards
- Buchholz relay with alarm and trip contact with shut off valves
- Oil temperature indicator with alarm and trip contact
- Winding temperature indicator with alarm and trip contact
- Magnetic oil level gauge with alarm contact
- Marshalling box to house oil temperature indicator and winding temperature indicator
- Cooler control unit
- Neutral current transformer
Optional accessories:
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Winding temperature indicator and oil temperature indicator with remote indication
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RTDs for winding temperature measurement
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Oil preservation system through air cell/thermosphyon filter
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Neutral earthing bar with epoxy supports
