Electric Power Transformer

Key Features

  • High efficiency (above 98%) with low losses (as per IEC/ANSI standards)
  • Customizable voltage ratings (step-up or step-down)
  • Robust copper or aluminum windings
  • Cooling systems: ONAN, ONAF, or forced air/oil cooling
  • Hermetically sealed or conservator-type oil tank design
  • Temperature monitoring & overload protection
  • Eco-friendly mineral or ester oil insulation (optional)
  • Anti-corrosive body for outdoor/harsh environment
  • Low noise operation and vibration-dampened core
  • Long operational life (20–30 years)

An Electric Power Transformer is an essential electrical device used to transfer electrical energy between circuits through electromagnetic induction. It ensures voltage level adjustment—either stepping up (increase) or stepping down (decrease)—to meet grid, industrial, or building power needs. These transformers are designed for high efficiency, reliability, and safety in continuous operation.

Applications

  • Power Utilities (REB, DESCO, DPDC, PGCB)
  • Industrial Plants & Factories
  • High-rise Commercial Buildings
  • Data Centers and Hospitals
  • Solar and Wind Power Grid Integration
  • Substations and Distribution Networks
  • Export Processing Zones (EPZs)

Technical Specifications

ParameterSpecification Range
Rated Capacity100 kVA – 10 MVA
Voltage Levels11/0.4kV, 33/11kV, 132/33kV (or custom)
Frequency50 Hz
Phase3-phase (Single-phase optional)
Vector GroupDyn11, Yyn0, Yd11, etc.
Insulation ClassClass A, B, or F
Cooling TypeONAN / ONAF / OFWF / Dry Type
Winding MaterialCopper / Aluminum
Impedance4% – 12.5% (as required)
Standards ComplianceIEC 60076, ANSI C57, BSTI
ProtectionBuchholz relay, PRV, Breather, OLTC/OLR

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