So’RAIL

DC solutions and services

Download documentation

DC Railway solutions

The so’rail range of products is dedicated to DC traction substations to supply your mass transit and light railway networks. We offer power conversion, protection, and distribution solutions.

Our products and solutions power trams, subways and trolleybuses located in France and across the globe.

The design of our products was thought very carefully to ease maintenance and reduce work on site.

Successful tests in independent laboratories

Fully customizable products thanks to the expertise and skills of our design department

Eco-designed products

Our products

Rectifier

A rectifier converts alternative current (AC) to direct current (DC) for railway substations.

Read more
Rectifier

A rectifier converts alternative current (AC) to direct current (DC) for railway substations.

  • IEC 60146, EN 50328
  • Output voltage : up to 3000 Vdc
  • Power : up to 6MW
  • 6/12/24 pulses assembly, serial or parallel
  • Fix or withdrawable
  • Various overload classes
  • Natural or forced ventilation
  • Up to IP32
  • Possible combination with an isolating switch

PRODUCT STRENGTH

  • Reliability & maintainability : Reduced main time to repair
  • Customization : Many configurations (front or front/rear access, connections from the top or bottom, etc)
  • Flexibility : HMI customization, specific function integration (protection, measures, interlocks, etc)
  • Innovation : Optimized heat dissipation thanks to our FAHRENHEIT 10000 laboratory.

HSCB

Our range of High Speed Circuit Breakers guarantees the protection of urban transport networks (trolleybus, trams, subways).

Read more
HSCB

Our range of High Speed Circuit Breakers guarantees the protection of urban transport networks (trolleybus, trams, subways).

There are three compartments in our so’rail HSCB : circuit breaker compartment with a 3-position withdrawable tray (connected, test, disconnected), low voltage compartment and connection compartment.

  • EN 50123, IEC 61992
  • Voltage : up to 1500 Vdc
  • Power : up to 8000A
  • SRI Protection Relay
  • Customizable HMI
  • IP32
  • Possibility to add different switches functions (isolating, grounding)
  • Front and rear access

PRODUCT STRENGTH

  • Product compactness
  • Modularity : Our HSCB can be assembled in pairs, according to the distribution architectures (TT substation, workshop)
  • Innovation : Can be assembled with other so’rail products

Voltage Limiting Device

In a DC Traction System, the return circuit (negative) will usually have a high insulation level against the earth to limit stray currents phenomena.

Read more
Voltage Limiting Device

In a DC Traction System, the return circuit (negative) will usually have a high insulation level against the earth to limit stray current phenomena.

However, in case of dangerous overvoltage and/or specific defects, the return circuit will be short‐circuited to the earth. For this purpose, a voltage limiting device will be installed on each negative path.

The so’rail limiting device is in compliance with EN 50122‐1/2 standards. We offer class 1 or 2 cabinet solutions, or class 3 or 4 products complying with EN 50526-2 standards.

PRODUCT STRENGTH

  • Protection & safety :
    • Main contact visibility
    • Key lock for maintenance
  • Operation & maintenance tools :
    • Voltage and Stray Current measures
    • Data recording : events and oscillographics
    • Programmable single line diagram
  • Ergonomic display :
    • 7-inch color touch screen
    • USB plug to set and export data
    • Ethernet RJ45 plug for SCADA system interface
    • MODBUS or IEC61850 communication network

Our solutions

Isolating Switch

KOHLER can offer specific or configurable technical solutions to distribute power on trams, trolleybuses, and subways. These solutions comply with railway standards.

Read more
Isolating Switch

KOHLER can offer specific or configurable technical solutions to distribute power on trams, trolleybuses, and subways. These solutions comply with railway standards.

  • Switch / Disconnector / Contactor functions
  • Voltage : up to 3000Vdc
  • Power : up to 8000A
  • Options: Detection, Surge arrester, Earth connection, Earth fault protection relay (ANSI 64), Surge protection (ANSI 59)

PRODUCT STRENGTH

  • Customization :
    • The variety of functions and options allows us to delight our customers and satisfy their requests.
  • Ergonomics :
    • Each function is accessible for an easy maintenance
    • The size is customizable to meet the customer’s needs
  • Innovation :
    • It can be assembled with other so’rail products on our plant to provide an easier installation on site.

Insulating line equipment

So’rail insulating line equipment are designed to be installed outside and endure extreme weather conditions (wind, snow, temperature, hygrometry).

Read more
Insulating line equipment

So’rail insulating line equipment are designed to be installed outside and endure extreme weather conditions (wind, snow, temperature, hygrometry).

  • Line / Workshop isolating and load break switch
  • Feeder box
  • « Double insulation» outdoor panels for electrical traction installations (750 | 1500 | 3000 Vdc)
  • Metallic or insulating enclosure
  • Up to IP 66
  • Options: Detection, Surge arrester, Earth connection, Earth fault protection relay (ANSI 64), Surge protection (ANSI 59)

PRODUCT STRENGTH

  • Customization : Depending on your specifications
  • Durability : Insulating line equipment are designed to meet external environmental constraints
  • Ergonomics : Internal functions are interchangeable in less than two hours

Control Command

KOHLER Power Control & Distribution offers hardware and software automation solutions to satisfy requests in railway systems.

Read more
Control Command

KOHLER Power Control & Distribution offers hardware and software automation solutions to satisfy requests in railway systems.

  • Specifications (functional, hardware, technical)
  • Software (PLC, CCP, HMI, Network, …) on different plateforms: SCHNEIDER, SIEMENS, ROCKWELL, PC VUE, PANORAMA,…
  • Up to SIL3 development
  • Cybersecurity expertise in CEI 62443 products and systems
  • Manufacture and tests
  • France and international commissioning
  • Training

PRODUCT STRENGTH

  • Customization : Customizable automation solutions to satisfy your requests
  • Communication : CEI 61850, TCP/IP, MODBUS, OPC UA, etc
  • Safety :
    • Safety Integrated Level (SIL): CEI 61508 – EN 50128 -EN 50129,
    • Cybersecurity complying with CEI 62443

Learn more

Protection relay

The SRI protection relay can be integrated on our HSCB or VLD products. It has three main functions : protection, control command, and user interface.

  • Protection : Railway DC line protection functions complying with EN 50126, EN50128 and EN50129
  • Control Command : Commissioning assistance (LADDER), maintenance assistance, MODBUS communication, CEI 61850
  • User interface : fully customizable via a 7-inch color touch screen, data export, remote connection.

Remote diagnosis, support of the maintainer during preventive and curative operation, predictive maintenance tools, measure and analysis tools

Customizable HMI (designed by our experts)

Easy maintenance

Overall packages & solutions

To save space, time and cost, Plug&Play electrical sub-station solutions are entirely designed by our engineering department.

Integration cand be done in shelters, containers, skids or modular structures.

Clean Energy

To help you choose a more sustainable solution, we can guide you with energy storage systems, hydrogen power conversion, EMS (Energy Management System) or AC medium voltage static switch.

Moreover, our products are eco-designed and we continuously try to reduce their carbon footprint.

Contact

To learn more about our railway solutions, feel free to check our documentation.

For other questions, please fill in this form.