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Kalpa Electrikal Pvt Ltd
gstGST : 29AAACK7799P1ZD Write a Review

Oil Cooled Transformer

Leading Manufacturer, Supplier & Retailer of Oil Immersed Distribution Transformer and Medium Voltage Outdoor Oil Filled Voltage Transformer.

Oil Immersed Distribution Transformer

  • Min. Order (MOQ) 1 Piece
  • Frequency 50/60 Hz
  • Construction Type Indoor/Outdoor
  • Duty Type Outdoor / Indoor, Pole or Ground Mounted
  • Voltage Class 3.3, 6.6, 11, 22, 33kV or any specific
  • No of Phases 1 or 3 Phase, ONAN, KNAN
  • Capacity Up to 10MVA
  • Insulating Fluid PCB FREE Mineral Oil, both inhibited & Biodegradable FR3, uninhibited as per IS335/IEC60296
  • Class of Insulation Class A
  • Tap Changer Off Circuit or On Load
  • Tapping Range OCTC or OLTC as per customer requirement
  • Winding Material Aluminum or Copper with multi paper covering
  • Applicable Standards IS 1180 , IS 2026, IEC 60076, ANSI, IEEE
  • Painting Enamel, Epoxy, Polyurethane or customer specific

Kalpa offers a complete line of oil cooled three-phase distribution transformers that meet applicable IS / IEC standards. With high voltages up to 33kV and ratings up to 10 MVA, transformers are designed for outdoors covering domestic, International , commercial and industrial applications. High-grade materials, combined with sophisticated engineering design systems and state of the art test infrastructure are key elements of a transformer that will deliver years of highly reliable service.

  • Design can meet any stringent specifications
  • Offering low losses as per request. As per IS1180/EEL - 1, 2 & 3 BEE STAR RATING
  • Capacity to Execute large volume orders.


Assured Features

  • Highest dielectric insulation property to withstand Lightening Impulse
  • Mechanical design to withstand short circuit forces arising during faults
  • Optimum oven heating under vacuum as to achieve desired compression height and maximum insulation resistance (IR) to windings
  • Adequate ducts between layers, coils, discs for maximum oil flow and reduced hot spot temperature.
  • Step-lap designed CRGO laminations for lower losses and excitation current
  • Pre-compressed Insulation material for minimal moisture absorption


Standard Fittings

  • H.V. Cable box
  • L.V. Cable box with bus bar or bus duct
  • Off circuit tap links
  • Conservator oil filling hole With cap & drain plug
  • Undercarriage with four Bi-directional rollers
  • Earthing terminals
  • Drain cum bottom filter Valve with sampling plug
  • Top filter valve with Sampling plug
  • Plain Oil Level Gauge
  • Rating diagram plate
  • Air release device
  • Thermometer Pocket
  • Lifting lugs
  • Pressed Steel Radiators (Fins or corrugated type)
  • Double Diaphragm explosion vent
  • Silica gel breather
  • Additional Neutral bushing
  • First filling of oil


Optional Fittings

  • Detachable Radiators with isolating valves
  • Jacking Pads
  • Dial type Oil Temperature Indicator With A/T contacts
  • Dial type Winding Temperature Indicator with A/T contacts
  • Magnetic Oil Gauge with A/T contactsw
  • Buchholz relay with A/T contacts
  • Marshaling box with control wiring
  • Equalizer pipe between Conservator & explosion vent
  • On Load Tap Changer
  • RTCC Panel with automatic Voltage Regulator (AVR)
  • Pressure Release valve
  • DGPT Relay
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Medium Voltage Outdoor Oil Filled Voltage Transformer

  • Min. Order (MOQ) 1 Piece
  • Accuracy Class 0.1, 0.2, 0.5, 1, 3
  • Application Outdoor
  • Highest Voltage for Equipment (kV) Up to 36 kV
  • Rated Insulation Level (kV) Up to 36/70/170kVp
  • Rated Frequency (Hz) 50-400Hz
  • Rated Primary Voltage(V) Up to 33kV
  • Rated Secondary Voltage(V) 110V/RT3, 110V/3, 110V (As Per Requirement)
  • Rated Burden (VA) Up to 500VA
  • Accuracy Class of Protection Core 3P to 6P
  • Number of Windings 1-2-3-4-5
  • Voltage Factor 1.2 Continuous/1.5 for 30 sec, 1.9 for 8 hours
  • Type of Earthing One End Earthed Type (E-N)/ UnEarthed Type (U-N)
  • Class of insulation Class A
  • Applicable Standards IS, IEC, ANSI, BS, etc.
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