Cast Resin Dry Type Transformer

Cast Resin Dry Type Transformer

STANDARD FITTINGS

  • H.V. Cable box.

  • L.V. Cable box with bus bar or bus duct

  • Off-circuit tap links

  • Undercarriage with four bi-directional rollers

  • Earthing terminals.

  • Rating and diagram plate

  • Lifting lugs for complete transformer

  • Tapping link operation door

  • Enclosure with louver panels

  • Canopy

  • Base channel – 2 Nos.

  • Separate neutral bushing on LV side.

  • Paint: Powder-coated with RAL 7032 Shade

TECHNICAL SPECIFICATIONS

Parameter Specification
Duty, Type Outdoor / Indoor Ground Mounted Type
Voltage Class UPTO 33 kV
No of Phases 3 Phase
Frequency 50/60 Hz
Vector Group Dyn1 or Dyn5 or Dyn11 or any specific
Insulating Fluid F or H with Temp Rise of 90 or 115 Deg C or as per customer requirement
Class of Insulation Class A
Tap Changer Off Circuit or On Load
Tapping Range + 2.5% X 2 for OCTC or + 2.5% X 2 & - 2.5% X 6 for OLTC or as per customer requirement
Winding Material Aluminium or Copper with multi paper covering
Applicable Standards IS 11171, IEC 60726
Painting Powder coated with RAL 7032 shade or as per customer requirement

SAFETY FEATURES

  • Environment Friendly

  • Fire Resistance

  • Non-Hygroscopic

OPTIONAL FITTINGS

  • RTD with A/T contact

  • Marshalling box with control wiring

  • On Load tap changer with RTCC panel with AVR

  • Forced Cooling arrangement

  • Neutral Current Transformer

ASSURED FEATURES

  • Windings are electrically balanced to minimize axial short-circuit forces.

  • Coils are held rigidly in place between insulators clamped to the upper and lower core frames under high compression.

  • Precise casting under vacuum, ensuring low partial discharge.

  • Smooth surface finish and robust construction of MV & LV cast Coils.

  • Adequate ducts between coils and discs for maximum airflow and reduced hot-spot temperature.

  • Step-lap-designed CRGO laminations for lower losses and excitation current.

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