Oil-immersed distribution transformers
Our standard oil-immersed BTB distribution transformers are manufactured up to 72.5 kV and 3150 kVA and meet the requirements of international standards (IEC). The design also complies with the EU Ecodesign directive. Designs to other national standards (ANSI, BS, etc.) are available on request.
Power range
Voltage range
Standard power and voltage range
- Power: Up to 3150 kVA
- Voltage: Up to 72.5 kV
- Standard: Complies with IEC 60076 (ANSI / BS available on request)
- Environmental: Meets current EcoDesign requirements
If you need higher power ratings, please contact us. For special application transformers, you can find more information here. For high-voltage solutions, see our power transformers here.
BTB quality and reliable manufacturing partners
When you see our nameplate on a transformer, you can trust that it meets our high standards and is produced by one of our trusted manufacturing partners.
Our oil-immersed BTB distribution transformers are manufactured by an established partner. Quality is guaranteed by certifications including ISO 9001, ISO 14001 and ISO 45001.
If you would prefer a transformer from a different manufacturer, that is no problem. We have connections to all major producers and can deliver exactly what you need.
Choose a rating
Choose a size to see detailed specifications and typical applications.
Technical data
The following specifications apply to all standard sizes:
| Frequency: | 50 Hz |
| Vector group: | Dyn11 |
| Operating temperature: | -40 / +40°C |
| Standards: | IEC 60076 |
| Temperature rise: | 60/65 K |
| Bushings: | Porcelain or plug-in |
| Winding material: | Al or Cu |
| Insulation class: | A |
| Energy losses: | ECO-design or other loss tiers |
Custom design
If you need something other than a standard model, we are flexible and can accommodate various requirements. Custom models are made to order and handled as individual projects to ensure all specific requirements are met.
With a custom design, we can offer the following features, among others:
- Dual primary voltage
- Different vector groups and phase displacement
- Temperature rise adjusted to the ambient temperature
- Higher insulation level with increased resistance to lightning and overvoltage surges
- Robust tank construction with bolted or welded cooling radiators and oil conservator
- Kabelboxar
- Voltage regulation with bolted links for improved operational reliability
- Voltage regulation with motorised tap changer
- Various types of cooling/insulating fluids
- Sized to fit spaces with dimensional constraints
FAST TRACK
Fast track services – för brådskande projekt
Tack vare vårt globala nätverk kan vi identifiera ledig produktionskapacitet även när andra har fullbokat. Det gör att vi kan leverera nytillverkade transformatorer snabbt i kritiska situationer – utan att pruta på kvaliteten.
Contact us
A transformer for your needs
Tell us your requirements and we will put together a solution that meets your needs.
The Transformer Marketplace ®
Fast delivery — from stock or production
BTB delivers transformers manufactured to order as well as stock units. We offer both standard and special applications and handle everything from individual transformers to large-volume orders.
