RHONA designs and manufactures Power Transformers for energy transmission and distribution systems across medium and high voltage networks. Our transformers are designed for outdoor operation with low noise, high efficiency, and reduced maintenance requirements. They are commonly deployed in power substations, renewable energy projects, industrial facilities, and utility-scale infrastructure.
We offer both standard configurations and custom-built units. Each transformer is tailored to meet the specific electrical and dimensional requirements of your project.. All RHONA transformers are manufactured with high quality materials and comply with international standards such as IEC and IEEE.
Technical Specifications
- Power Rating: Up to 150 MVA
- Primary Voltage: Up to 230 kV
- Cooling Systems: ONAN / ONAF / OFAF / OFWF / KNAN / KNAF / ODAF
- Tap Changers:
- De-Energized tap changer
- On-Load tap changers (with or without remote control)
- Insulating liquids such as Mineral Oil, Vegetable Oiland Synthetic Esters.
Standard Features
- Hermetically sealed or conservator tank design
- Oil level indicator
- Pressure relief valve
- Buchholz relay
- Winding and Oil Thermometers
- Lifting lugs and grounding terminals
- High-quality painting system for corrosion resistance
- Control cabinets according to NEMA standard
Optional Accessories
- Removable or welded Radiators
- Oil sampling valve
- Dissolved gas analysis monitors
- Digital monitor for temperature measurements
- On-Load tap changer with motor drive and control cabinet
- Customized protections and sensors
Applications
RHONA Power Transformers are suitable for:
- Primary and secondary substations
- Industrial electrical networks
- Renewable energy plants (such as solar andwind)
- Utility transmission and distribution systems
- Mining and large-scale industrial facilities
RHONA ensures technical support across all project phases—from engineering and production to testing, installation, and commissioning. With over 60 years of experience in the energy sector, RHONA offers trusted transformer solutions throughout Latin America and now serves the North American market.
