Dry type Transformers Cast Resin Type(CRT)

At Kalpa Electrikal Pvt Ltd, casting method of these transformers is obtained with the combined action of vacuum and temperature.

At Kalpa Electrikal Pvt Ltd, casting method of these transformers is obtained with the combined action of vacuum and temperature. The casting method makes it possible to assure void-free epoxy penetration of both the inner layer and between turn insulation. These Transformers are specifically needed in the distribution network for feeding basements or stilts of high-rise buildings, hotels, Malls, stadium, airports, chemical & refinery plants.

TECHNICAL SPECIFICATIONS

Duty Type Outdoor / Indoor , Convertor Duty, Special Type
Voltage Class UPTO 33 kV
No of Phases 1 Phase or 3 Phase
Frequency 50/60 Hz
Capacity UPTO 2.5 MVA
Vector Group Dyn1 or Dyn5 or Dyn11 or any other connection as per customer requirement.
Class of Insulation Class B/F/H with Temp Rise of 70/90/115 Deg C or as per customer requirement.
Tap Changer Off Circuit or On Load.
Tapping Range OCTC or OLTC As Per Customer Requirements
Winding Material Copper
Applicable Standards IS 11171, IEC 60076
Painting Painting : Powder Coated with RAL 7032 Shade or As Per Customer Requrement
Degree of protection IP 23,43 or As Per customer requirement.
Duty Type Outdoor/Indoor, Convertor Duty, Special Type
inner_productsdry-type-transformers-crt
dry-type-transformers-crt

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 highcompression.
  • Precise casting under vacuum ensuring low partial discharge.
  • Smooth surface finish and robust construction of MV & LVcastCoils.
  • Adequate ducts between coils, discs for maximum airflowand reducedhotspotTemperature.
  • Step-lap designed CRGO laminations for lower losses and excitationcurrent.

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 louvre panels
  • Canopy
  • Base channel – 2 Nos
  • The separate neutral bushing on LV side
  • Paint: Powder coated With RAL7032 Shade

OPTIONAL FITTINGS

  • RTD with A/T contact.
  • Marshaling box with control wiring.
  • On Load tap changer.
  • Forced Cooling arrangement.
  • Neutral Current Transformer.

SAFETY FEATURES

  • Environment-Friendly.
  • Fire Resistance.
  • Non-Hygroscopic.

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