Auxiliary Transformers
Compact auxiliary and station service transformers providing reliable house load power for substations, power plants, and industrial facilities. Multi-winding configurations available for diverse auxiliary supply requirements.
Engineering Features
Station Service Supply
Reliable power for substation auxiliaries — lighting, cooling fans, control circuits, and battery chargers.
Technical Data
| Parameter | Range / Value |
|---|---|
| Rated Power | 50 kVA – 2 MVA |
| Primary Voltage | 6.6 – 36 kV |
| Secondary Voltage | 230/400 V – 690 V |
| Frequency | 50 / 60 Hz |
| Impedance | 4% – 6% |
| Vector Group | Dyn11, Yyn0 |
| Temperature Rise | Top oil ≤ 55K, Winding ≤ 60K |
| Noise Level | ≤ 50 dB(A) |
| Ambient Temp | -25°C to +50°C |
| Design Life | 25+ years |
Standard range parameters — custom specifications available on request.
Related glossary terms
ENATS 35-1
DNO-approved distribution transformer specification
ENATS 35-2
UK secondary substation transformer standard
G99 Compliant
Engineering Recommendation G99 grid interface
BS EN 60076
British Standard for power transformers
KEMA Certified
Independent short-circuit witness testing
EcoDesign Tier 2
EU 548/2014 efficiency compliance
Compact station-service and auxiliary transformers for UK power-plant and substation service. 50 kVA to 2 MVA at up to 36 kV — BS EN 60076 type-tested with multi-winding configurations for control, protection, lighting and HVAC loads. Standard supplier for UK CCGT power stations, primary substations and Network Rail traction depots.
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Where Auxiliary Transformers Excel.
Power Substations
House load supply for HV/MV substations — lighting, HVAC, and control systems.
Power Plants
Station service transformers for thermal, hydro, and gas turbine generating stations.
Industrial Facilities
Auxiliary power for process control, instrumentation, and facility services.
Renewable Energy
Balance-of-plant power for wind farms and solar plant auxiliary systems.
Frequently Asked Questions
Related Knowledge
FAQs, glossary terms and sizing steps mapped to this product.
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