Substation Transformers

RHONA’s Substation-Type Transformers are engineered for heavy-duty industrial and mining applications, in accordance with ANSI and NEMA standards. These robust, compact units are designed for outdoor installation on concrete foundations, offering safe and reliable power distribution in harsh environments.

 Featuring medium and low voltage bushings positioned on opposite narrow faces of the transformer, they enable seamless connection to switchgear, protective enclosures, or bus ducts as required by each project. All electrical connections are fully enclosed to ensure the safety of operating personnel.

Technical Highlights

  • Power Rating: Up to 30 MVA
  • Voltage Level: Up to 36 kV
  • Cooling: ONAN / ONAF (optional forced-air cooling for additional capacity)
  • Insulating Fluid: Mineral oil or Fire-resistant fluid
  • Protection: Accessories available with or without contacts
  • Configuration: Side bushings compatible with switchgear, distribution centers, or busbars

Advantages

  • Heavy-duty and compact design for industrial use
  • High safety with fully enclosed electrical terminals
  • Flexible connection options for secondary equipment
  • Designed for reliable outdoor operation with low maintenance
  • Tailored solutions based on project specifications

RHONA delivers Substation-Type Transformers with proven field performance, supported by decades of experience in the energy, mining, and industrial sectors. Each unit is developed in compliance with international standards and includes personalized technical support from design to commissioning.