1000kVA Distribution Transformer
1000kVA three-phase oil-immersed transformer with 6.6kV/11kV input and 420V output. Features O.N.A.N. cooling and advanced protection for industrial power systems.
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1000kVA Distribution Transformer – Reliable Power for Industrial and Commercial Systems
The Retrolex Transformers 1000kVA Distribution Transformer is a high-performance, three-phase, oil-immersed transformer designed for industrial and commercial power distribution applications, and one of our most popular options. Built 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 mechanical cooling equipment. This energy-efficient design ensures stable operation, reduces maintenance requirements, minimizes operational costs, and maintains optimal performance even under fluctuating load conditions, providing consistent voltage regulation, enhanced energy efficiency, and dependable protection for connected equipment.
The 1000kVA Distribution Transformer supports primary voltage inputs of 6.6kV or 11kV and provides a 420V low-voltage output, making it compatible with various medium-voltage networks. Constructed from premium-grade materials and fully compliant with SANS and IEC standards, this transformer delivers safe, reliable, and long-lasting performance. Key components 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 operational safety, reduce downtime, and simplify maintenance, even in demanding industrial or commercial environments.
Key Benefits of the 1000kVA Distribution Transformer
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Reliable Operation: Designed to operate continuously under high-load conditions in industrial and commercial settings.
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Energy-Efficient Cooling: The O.N.A.N. system naturally regulates temperature, lowering energy consumption and maintenance needs.
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Comprehensive Protection: Buchholz Relay and pressure relief devices provide early fault detection and safeguard the transformer.
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Flexible Voltage Compatibility: Multiple primary voltage options make integration with diverse networks simple.
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Long-Term Durability: Premium materials and robust construction guarantee stability and longevity.
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Low Maintenance: Designed for minimal servicing without compromising performance.
Applications
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Industrial power distribution for factories and plants
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Large commercial buildings and complexes
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Renewable energy substations and IPP connections
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Utility distribution networks
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Backup and emergency power systems
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Critical infrastructure requiring stable, reliable electricity
| Attributes | Value |
|---|---|
| Frequency |
50 Hz |
| Number of Phases |
3 |
| Cooling Type |
O.N.A.N. |
| Efficiency |
≥ 98.4% |
| Weight (approx) |
1800 – 2200 kg |
| Primary (Input) Voltage | |
| Secondary (Output) Voltage | |
| Core/Windings | |
| Colour | |
| Cable Box | |
| Build | |
| Other |





















