Railway Auxiliary Transformers
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Reliable Power Supply for Station and Onboard Auxiliary Systems
In railway and urban transportation projects, not only traction power but also auxiliary systems must operate continuously and safely. Lighting, HVAC, signaling equipment, control panels, and security systems require stable and reliable power supply.
ESTA Railway Auxiliary Transformers are specifically engineered to ensure uninterrupted and safe energy supply for these critical auxiliary loads.
Electrical Scope
Power range
500 kVA – 20 MVA
Voltage level
400 V – 15 kV
Frequency
50 Hz / 60 Hz
Harmonic-compatible design
6-pulse / 12-pulse / customized configurations
Off-load or On-load tap changer options
Fully engineered-to-order solutions.
Applications
Metro and tram stations
Railway technical buildings
Signaling and control systems
HVAC installations
Lighting and security infrastructure
Onboard auxiliary supply systems
Railway-Specific Design Features
Stable Voltage Supply
- Designed for sensitive electronic equipment
- Withstands voltage fluctuations
Continuous Operation
- Suitable for 24/7 duty conditions
- Low-loss magnetic core construction
Mechanical Durability
- Vibration-resistant structure
- Compact design for urban substations
Engineering Capability
- Electromagnetic design calculations
- Thermal performance evaluation
- Load profile analysis
- Project-specific FAT procedures
Each transformer is engineered according to station requirements and system load characteristics.
Operational Advantages
- Designed for continuous 24/7 operation
- Stable and reliable auxiliary power supply
- Low-loss and energy-efficient design
- Long service life
- Suitable for metro and tram infrastructure
Operational Reliability
Auxiliary power systems form the foundation of signaling and safety infrastructure. Therefore, ESTA designs focus on:
- High operational reliability
- Reduced failure risk
- Minimal maintenance requirements
- Stable long-term performance
Standards & Compliance
Designed and manufactured in accordance with:
- IEC 60076
- Railway technical specifications
- Local grid and utility standards
Project-specific testing and FAT procedures are available upon request.
Why ESTA?
In railway systems, auxiliary power infrastructure directly supports operational safety and passenger continuity.
ESTA combines engineering precision, manufacturing reliability, and project-driven customization to deliver dependable auxiliary transformer solutions for railway networks.