50kVA Distribution Transformer – Compact and Reliable Power for Light Commercial and Residential Applications

The Retrolex Transformers 50kVA Distribution Transformer is a compact, three-phase, oil-immersed transformer engineered for light commercial, residential, and small industrial power distribution, a very popular choice for our clients. Designed for efficiency, safety, and long-term reliability, this transformer features an O.N.A.N. (Oil Natural Air Natural) cooling system, which naturally dissipates heat without the need for fans or external cooling. This energy-efficient design reduces maintenance, minimizes operational costs, and ensures stable voltage regulation under varying load conditions, while supporting consistent energy delivery, protecting connected equipment, and improving overall network reliability for small-scale installations.

Supporting high-voltage inputs of 6.6kV or 11kV and providing a 420V low-voltage output, the 50kVA Distribution Transformer incorporates essential protective and monitoring components. These include a Conservator Tank, Buchholz Relay, Temperature and Oil Level Indicators, Pressure Relief Valve, Drain Valve, Cable Boxes, and an Off-Circuit Tap Changer. Together, these features ensure safe operation, simplified maintenance, and reliable performance, even in demanding small-scale environments, providing peace of mind and long-lasting service.

Key Features – 50kVA Distribution Transformer

• Rated for 50kVA / 6.6kV or 11kV systems

• Cooling Type: O.N.A.N. (Oil Natural Air Natural)

• Protective Devices: Buchholz Relay, Pressure Relief Valve, Conservator Tank

• Monitoring: Temperature & Oil Level Indicators

• Construction: Premium oil-immersed, compact, corrosion-resistant enclosure

• Low Voltage Output: 420V

• Cable Boxes: Standard configuration

• Tap Changer: Off-Circuit type

Benefits

• Maintenance-Free Cooling: Natural convection reduces operational and maintenance costs.

• Compact & Reliable: Ideal for residential or light commercial installations with limited space.

• Enhanced Safety: Protective devices detect faults early and safeguard the transformer and connected equipment.

• Durable Build: Premium-grade materials ensure long-term service life and stable performance.

• Energy-Efficient Operation: Minimizes energy losses and operational expenses.

Applications

• Residential power distribution

• Small commercial facilities

• Light industrial workshops

• Renewable energy integration

• Utility and substation feeder lines