EcoStruxure Power Digital Solutions and Services for Auxiliary Power Systems

Schneider

11yrs + staff 20000+m² US$400,000,000+ China

What is it?

Auxiliary Power Systems are electrical distribution systems

incorporated in the railway infrastructure to power loads

that require electricity for their operation, such as:

• Interlocks and other signaling equipment
• Track sensors
• Point heaters
• Telecommunications equipment
• Other technical buildingsThey are particularly used in areas where it is not possible to find a regular supply of electricity.

• 25% of the total energy of the railway system is consumed by auxiliary power systems.

How it works?

To ensure high reliability, auxiliary power systems use

dual-source power distribution loops.

This setup provides redundancy by connecting two

independent power sources, allowing uninterrupted

operation even if one source fails.

Key Benefits:

✔ Continuous Power Supply – If one source fails, the backup automatically takes over.

✔ Enhanced Stability – Minimizes downtime and improves fault tolerance.

✔ Flexible Power Routing – Electricity can flow through alternate paths if disruptions occur.

Main components of the electrical architecture solution

Key Components of the Electrical Architecture

Medium Voltage (MV) Switchgear Cabinets

•Three-phase distribution cabinets for power control

and protection.

•Isolate faults and maintain system stability.

Auxiliary Power Transformer (Dry-Type)

•Converts voltage levels to support auxiliary systems

safely.

Control, Protection & Measurement Equipment

•Relays, circuit breakers, and sensors for fault detection.

•Real-time monitoring of voltage, current, and power

quality.

Low Voltage (LV) Distribution Equipment

•Switches, distribution panels, and cooling systems.

•Ensures safe power delivery to end-use applications

04/15/2025

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