prEN 50562-1:2025
(Main)Fixed installations for railway applications - Safety of electric traction power supply systems - Part 1: Generic approach for conventional applications, functions and properties
General Information
- Abstract
This document defines the process, protective measures and demonstration of safety in accordance with EN 50126-1:2017 and EN 50126 2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground. This document has two parts: — prEN 50562 1:2025 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems. — prEN 50562 2:2025 supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems. This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline. This document does not apply to: — underground mine traction systems, — cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, — suspended cable cars, — funicular railways, — magnetic levitated systems, This document does not consider aspects like IT-security or protection against any other malevolent acts. It is assumed that those aspects are handled on the overall system level. NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from safety applications.
- Status
- Not Published
- Publication Date
- 30-Mar-2027
- Technical Committee
- CLC/TC 9X - Electrical and electronic applications for railways
- Current Stage
- 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
- Start Date
- 22-Aug-2025
- Due Date
- 07-May-2025
- Completion Date
- 22-Aug-2025
Overview
The prEN 50562-1:2025 is a European standard developed by CLC/SC 9XC focusing on the safety of electric traction power supply systems used in fixed installations for railway applications. This standard provides a generic approach for conventional applications, integrating safety processes, protective measures, and demonstration of safety in line with EN 50126-1:2017 and EN 50126-2:2017.
The scope covers both AC and DC electric traction power supply systems across various railway types, including urban rail and trolleybus systems. Applicable to installations that are elevated, at-grade, or underground, this standard targets systems that are either newly built or undergoing major changes. It excludes systems such as underground mine traction, cranes or temporary rail structures, suspended cable cars, funicular railways, and magnetic levitated systems.
This document is part one of a two-part series:
- Part 1: Focuses on conventional applications, functions, and properties using a code of practice.
- Part 2: Supports non-conventional applications by applying distinct codes of practice and risk estimation.
Key Topics
Risk Assessment Process: Emphasizes system definition, identification of hazards related to conventional applications, and risk acceptance principles. Protective measures are tailored to the unique aspects of electric traction power supply systems to ensure safety for both people and the environment.
Generic Reference System: Defines the conventional electric traction power supply system including substations, switching stations, contact line systems, and extended return circuits. It covers equipment functions, control systems, and interfaces with rolling stock, signaling, communication systems, civil structures, and high voltage installations.
Protective Measures: Details safety controls at various system levels:
- Substations and switching stations protections
- Contact line system safeguards
- Extended return circuit protections
Safety Demonstration: Guides the demonstration of safety measures implemented for both conventional and non-conventional applications, complying fully with EN 50126-1:2017 and EN 50126-2:2017 lifecycle processes.
Exclusions & Limitations: Explicitly excludes IT-security and protection against malicious acts, which are managed through separate standards such as CLC/TS 50701. The standard recommends separation of IT-security functions from safety functions to ensure independent and reliable safety operations.
Applications
prEN 50562-1:2025 is critical for:
- Railway operators planning new or significantly upgrading existing electric traction power supply systems.
- Design and engineering teams requiring structured guidance on safety risk management and protective measures for conventional railway power installations.
- Safety managers and regulators ensuring compliance with European safety lifecycle standards EN 50126-1 and EN 50126-2.
- Urban rail and trolleybus systems adapting the standard’s generic approach to their traction power supply safety requirements.
- Projects involving elevated, at-grade, or underground electric traction power supply designs.
- Facilitating integration of safety practices with other railway subsystem interfaces including rolling stock, track, signaling, and communication systems.
Related Standards
This standard should be used in conjunction with:
- EN 50126-1:2017 - Railway applications - The specification and demonstration of reliability, availability, maintainability, and safety (RAMS).
- EN 50126-2:2017 - Focused on safety demonstration as part of the RAMS lifecycle.
- EN 50562:2018 - The previous version to be partially superseded by prEN 50562-1:2025.
- CLC/TS 50701 - Covers IT-security aspects relevant for railway systems.
- Product and application standards that relate to electrical traction equipment safety and performance.
Summary
prEN 50562-1:2025 delivers a harmonized, lifecycle-based framework for safety in electric traction power supply systems within railway infrastructure. It supports railway stakeholders in managing risks effectively by providing comprehensive guidelines for hazard identification, protective measures, and safety validation. Ideal for conventional electric traction systems, this standard enhances safety, reliability, and regulatory compliance across European rail transit networks.
Relations
- Effective Date
- 08-Dec-2020
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Frequently Asked Questions
prEN 50562-1:2025 is a draft published by CLC. Its full title is "Fixed installations for railway applications - Safety of electric traction power supply systems - Part 1: Generic approach for conventional applications, functions and properties". This standard covers: This document defines the process, protective measures and demonstration of safety in accordance with EN 50126-1:2017 and EN 50126 2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground. This document has two parts: — prEN 50562 1:2025 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems. — prEN 50562 2:2025 supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems. This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline. This document does not apply to: — underground mine traction systems, — cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, — suspended cable cars, — funicular railways, — magnetic levitated systems, This document does not consider aspects like IT-security or protection against any other malevolent acts. It is assumed that those aspects are handled on the overall system level. NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from safety applications.
This document defines the process, protective measures and demonstration of safety in accordance with EN 50126-1:2017 and EN 50126 2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground. This document has two parts: — prEN 50562 1:2025 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems. — prEN 50562 2:2025 supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems. This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline. This document does not apply to: — underground mine traction systems, — cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, — suspended cable cars, — funicular railways, — magnetic levitated systems, This document does not consider aspects like IT-security or protection against any other malevolent acts. It is assumed that those aspects are handled on the overall system level. NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from safety applications.
prEN 50562-1:2025 is classified under the following ICS (International Classification for Standards) categories: 29.280 - Electric traction equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
prEN 50562-1:2025 has the following relationships with other standards: It is inter standard links to EN 50562:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
prEN 50562-1:2025 is associated with the following European legislation: EU Directives/Regulations: 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU, 2016/797/EU; Standardization Mandates: M/591. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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