Pad Mount Transformer

Three Phase Pad Mount Transformer

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Unitrans Power LLP offers a complete line of liquid-filled three-phase pad mount distribution transformers designed and manufactured to meet or exceed NEMA, ANSI, IEEE, CSA, UL, cUL, and DOE standards. Engineered with advanced design and premium materials, Unitrans pad mount transformers ensure long-lasting reliability, safety, and superior efficiency — delivering dependable power for data centers, utilities, commercial complexes, and industrial facilities.

Available in ratings up to 5000 kVA and voltage classes up to 36 kV, these transformers are built to perform efficiently in both underground and above-ground distribution systems, ensuring stable and consistent power delivery.

Unitrans Power LLP continues to set the benchmark in transformer reliability, quality, and performance, providing safe and efficient pad mount transformer solutions trusted worldwide.

Design & Construction Features
  • Circular / Disc Winding Design
  • Removable Radiators
  • Corrugated Fin-Wall Construction
  • UL Compliance
  • NEMA Sound Level Conformance
Accessory Options
  • DETC (De-Energized Tap Changer) on HV Side
  • LTC (Load Tap Changer) Options for HV
  • Winding Temperature Indicator
  • NEMA 3R / 4 Control Box
  • Pressure Relief Device
  • Provisions for Safety Rails
Testing

All transformers undergo standard commercial tests in accordance with
IEC, IS, CSA, ANSI, and IEEE standards.

  • Factory Acceptance Tests (FAT) – available virtual or in-person
  • Additional tests available upon request

 

Technical Specifications
Parameter Details
Capacity Up to 5000 kVA
Frequency 50 Hz or 60 Hz
Cooling Class ONAN, ONAF, or OFAF
Temperature Rise 65°C, 55/65°C
Insulating Fluid Mineral Oil, FR3, or Ester Oil
High Voltage Range 480 V – 35 kV
Low Voltage Range 120/240 V – 600 V
Winding Material Aluminium or Copper