Distribution and Power Transformer

Distrubution Transformer

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.
  • Designed to withstand electrical impulses,thermal and dynamic stresses.
  • Optimum utilization of active materials for compactness
  • Modern manufacturing techniques ensure cost effectiveness and reliability.

Specification

  • 3 Phase,50Hz in voltages of 11kV, 22kV and 33kV.
  • Off-circuit tap changer to provide +5% to -10% taps in steps of 2.5%.
  • On-load tap charger to provide +7% to -21% taps in steps of 1.75%.
  • Class A insulated.
  • Vector group Dyn 11.
  • Continuous duty.
  • Copper wound.
  • Painting as per iS/IEC standards.
  • HV side cable box.
  • LV side cable box/bus duct.
  • Standard fittings as per IS 2026/IEC 76.

Optional Accessories

  • Pressure relief valve without contact/with contact
  • Buchholz relay with alarm and trip contact
  • 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
  • Natural current transformer

Power Transformer

Specification

  • 3 Phase,50Hz in voltages of 11kV, 22kV and 33kV,66kV & 110kV,
  • Off-circuit tap changer to provide +/- 5%,+/- 7.5% & +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 & 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 11YNyn 0.
  • Vontinuous duty, double copper wound.
  • Painting as per IS / IEC standards
  • Both HV /LV side outdoor bushings or cable boxes
  • 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
  • Natural current transformer

Features

  • Designed for 25 years of trouble-free performance.
  • Design conforms to IS 2026,IEC 60076, ANSI and other relevant standards.
  • Low power loss and low noise.
  • Designed to withstand electrical impulses,thermal and dynamic stresses.
  • Optimum utilization of active materials for compactness
  • Modern manufacturing techniques ensure cost effectiveness and reliability.

Optinal Accessories

  • Winding temperature indicator and oil temperature indicator with remote indication
  • RTDs for winding temperature measurement.
  • Oil preservation system through air cell/ thermosphyon filter
  • Neutral earthing bar with epoxy supports.


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