CLC/SC 9XC/WG 11 - Railway applications - Power supply and rolling stock. Technical criteria for the coordination between the power supply systems (substations) and rolling stock to achieve interoperability Railway applications - Supply voltages of traction systems - First amendment
Prepare and maintain standards for requirements for the acceptance of rolling stock on infrastructure in the field of - coordination of protection principles (fault discrimination, for short circuits, limited current faults, earth faults, etc) between power supply and traction units - coordination of installed power on the line and power demand of the trains - coordination of traction unit regenerative braking and power supply receptivity EN 50388 series
Railway applications - Power supply and rolling stock. Technical criteria for the coordination between the power supply systems (substations) and rolling stock to achieve interoperability Railway applications - Supply voltages of traction systems - First amendment
Prepare and maintain standards for requirements for the acceptance of rolling stock on infrastructure in the field of - coordination of protection principles (fault discrimination, for short circuits, limited current faults, earth faults, etc) between power supply and traction units - coordination of installed power on the line and power demand of the trains - coordination of traction unit regenerative braking and power supply receptivity EN 50388 series
General Information
This document establishes requirements for the electrical aspects to achieve technical compatibility between rolling stock and electric traction systems, limited to: - co-ordination of protection principles between power supply and traction units, i.e. separation sections, train set current or power limitation, short circuit current discrimination, circuit breaker coordination and use of regenerative braking; - co-ordination of installed power on the line and the power demand of trains, i.e. traction unit power factor, train set current or power limitation, electric system performance, type and characterization; - compatibility assessment relating to harmonics and dynamic effects. Informative values are given for some parts of the existing European railway networks, in annexes. NOTE For those railways within the scope of EU Interoperability Directive, definitive values are set out in the register of infrastructure published in accordance with Article 49 of Directive (EU) 2016/797, and the list of items included in the register is described in the commission decision (EU) 2019/777. The following electric traction systems are within the scope of this document: - railways; - guided mass transport systems that are integrated with railways; - material transport systems that are integrated with railways. Information is given on electrification parameters to enable train operating companies to confirm, after consultation with the rolling stock manufacturers, that risks of non-compatibility are minimized and that there will be no consequential disturbance on the electrification system. The interaction between pantograph and overhead contact line is dealt with in EN 50367:2020. The interaction with the control-command and signalling subsystem is not dealt with in this document. Basic considerations have been included concerning the use of traction units with onboard electric traction energy storage in the electric traction power system. Details of this are dealt with in CLC/TS 50729:2025.
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Frequently Asked Questions
CLC/SC 9XC/WG 11 is a Subcommittee within CLC. It is named "Railway applications - Power supply and rolling stock. Technical criteria for the coordination between the power supply systems (substations) and rolling stock to achieve interoperability Railway applications - Supply voltages of traction systems - First amendment" and is responsible for: Prepare and maintain standards for requirements for the acceptance of rolling stock on infrastructure in the field of - coordination of protection principles (fault discrimination, for short circuits, limited current faults, earth faults, etc) between power supply and traction units - coordination of installed power on the line and power demand of the trains - coordination of traction unit regenerative braking and power supply receptivity EN 50388 series This committee has published 1 standards.
CLC/SC 9XC/WG 11 develops CLC standards in the area of W03 - ELECTRIC TRACTION EQUIPMENT - Information technology. The scope of work includes: Prepare and maintain standards for requirements for the acceptance of rolling stock on infrastructure in the field of - coordination of protection principles (fault discrimination, for short circuits, limited current faults, earth faults, etc) between power supply and traction units - coordination of installed power on the line and power demand of the trains - coordination of traction unit regenerative braking and power supply receptivity EN 50388 series Currently, there are 1 published standards from this subcommittee.
CLC is a standardization organization that develops and publishes standards to support industry, commerce, and regulatory requirements.
A Subcommittee (SC) in CLC operates under a Technical Committee and focuses on a specific subset of the TC's scope. Subcommittees develop standards and technical specifications in their specialized area, reporting to their parent Technical Committee. They may also have working groups for detailed technical work.