Pad Mount Transformer

1 - Phase Pad Mount Transformer

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Unitrans Power LLP offers a complete line of liquid-filled single-phase pad mount distribution transformers that meet or exceed NEMA, ANSI, IEEE, CSA, UL, and DOE standards.Built for reliability, safety, and efficiency, our single-phase pad mount transformers are designed to provide dependable power distribution for utility networks, residential areas, and light commercial applications.

With designs up to 250 kVA capacity and voltage classes reaching 34.5 kV (150 kV BIL), these transformers deliver consistent performance and long service life under varying operating conditions.

Unitrans Power LLP continues to deliver high-performance transformer solutions through precise engineering and durable design — ensuring safe, efficient, and long-lasting single-phase pad mount transformers trusted by utilities worldwide.

 

Design & Construction Features
  • Robust Tank Construction with Weatherproof Sealing
  • Hermetically Sealed or Conservator Type Options
  • High-Grade Core Steel for Low Losses
  • UL Compliance
  • NEMA Sound Level Conformance
Accessory Options
  • DETC (De-Energized Tap Changer) on HV Side
  • Pressure Relief Device
  • Liquid Level Gauge
  • Drain & Filter Valve
  • Bayonet-Type Fuses (Optional)
  • Secondary Bushing with Grounding Provisions
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 250 kVA
Frequency 50 Hz or 60 Hz
Cooling Class ONAN
Temperature Rise 65°C, 55/65°C
Insulating Fluid Mineral Oil, FR3, or Ester Oil
High Voltage Range Up to 34.5 kV (150 kV BIL)
Low Voltage Range 120/240 V
Winding Material Aluminium or Copper