British Standards Institution

Sector: Manufacturing

Overview: Under the direction of GEL/9, is responsible for the UK input to CLC/SC 9XC and IEC/TC 9 for standards relating to AC and DC supply lines, both overhead and third rail type; ancillary circuits; machinery and equipment of special feature for traction in fixed plants; nstallations and safety requirements in fixed plants.

Committee standards activity

In Progress (9)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CLC/TS 50729:2025	Railway applications. Fixed installations and rolling stock. Interface requirements between charging infrastructure with dedicated contact line sections and electric traction units with onboard electric traction energy storages and current collectors Categories: Electric traction equipment \| IT applications. Industry Approval begins :	Approval
PD CLC/TS 50711	traction systems Categories: Unclassified documents Proposal begins :	Proposal
BS IEC 63453	. Categories: Electric traction equipment Public comment begins : 2023-06-19	Public comment
BS EN IEC 63488	BS EN 63488 Railway applications - Technical criteria for the coordinations in neutral-section passing system for train Categories: \| Railway engineering. General Public comment begins : 2024-12-09	Public comment
BS EN 50317	Railway applications - Current collection systems - Requirements for and validation of measurements of the dynamic interaction between pantograph and overhead contact line Categories: Electric traction equipment \| Tractive stock Public comment begins : 2024-04-23	Public comment
BS EN 50152-3-1:2017/prA1	Railway applications - Fixed installations - Particular requirements for a.c. switchgear. - Part 3-1: Measurement, control and protection devices for specific use in a.c. traction systems - Devices Categories: Switchgear and controlgear. Low voltage \| Electric traction equipment Public comment begins : 2024-11-29	Public comment
BS EN 50122-3/A1	Fixed installations for railway applications - Electrical safety, earthing and the return circuit. - Part 3: Mutual Interaction of AC and DC traction systems Categories: Fuses. Overcurrent protection devices \| Electric traction equipment Approval begins :	Approval
BS EN 50122-2/A1	Fixed installations for railway applications - Electrical safety, earthing and the return circuit. - Part 2: Provisions against the effects of stray currents caused by DC traction systems Categories: Fuses. Overcurrent protection devices \| Electric traction equipment Approval begins :	Approval
BS EN 50122-1/A1	Fixed installations for railway applications - Electrical safety, earthing and the return circuit. - Part 1: Protective provisions against electric shock Categories: Electric traction equipment Public comment begins : 2024-04-23	Public comment

Published (38)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CLC/TS 50641-2:2024	Fixed Installations for Railway Applications. Requirements for the validation of simulation tools used for the design of electric traction power supply systems. specific DC urban case Categories: Electric traction equipment Published standard begins : 2024-04-23	Published standard
PD CLC/TS 50152-4:2021	Railway applications. Fixed installations. Particular requirements for AC switchgear. AC metal-enclosed traction switchgear Categories: Switchgear and controlgear. High voltage \| Electric traction equipment Published standard begins : 2021-09-07	Published standard
PD CLC/TR 50646:2015	Railway Application. Fixed Installations. Specification for reversible d.c. substations Categories: Electric traction equipment Published standard begins : 2015-12-23	Published standard
BS EN 62924:2017	Railway applications. Fixed installations. Stationary energy storage system for DC traction systems Categories: Railway rolling stock. General Published standard begins : 2017-07-05	Published standard
BS EN 62621:2016+A1:2016	Railway applications. Fixed installations. Electric traction. Specific requirements for composite insulators used for overhead contact line systems Categories: Railway rolling stock \| Insulators \| Electric traction equipment \| Railway rolling stock. General Published standard begins : 2017-01-03	Published standard
BS EN 50641:2020	Railway applications. Fixed installations. Requirements for the validation of simulation tools used for the design of electric traction power supply systems Categories: Electric traction equipment Published standard begins : 2020-01-20	Published standard
BS EN 50633:2016	Railway applications. Fixed installations. Protection principles for AC and DC electric traction systems Categories: Electric traction equipment Published standard begins : 2016-08-16	Published standard
BS EN 50562:2018	Railway applications. Fixed installations. Process, protective measures and demonstration of safety for electric traction systems Categories: Electric traction equipment Published standard begins : 2018-03-02	Published standard
BS EN 50526-3:2016	Railway application. Fixed installations. D.C. surge arresters and voltage limiting devices. Application Guide Categories: Fuses. Overcurrent protection devices \| Electric traction equipment Published standard begins : 2016-01-15	Published standard
BS EN 50526-2:2014	Railway applications. Fixed installations. D.C. surge arresters and voltage limiting devices. Voltage limiting devices Categories: Electric traction equipment \| Fuses. Overcurrent protection devices Published standard begins : 2014-03-12	Published standard

Withdrawn (39)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
DD ENV 50123-7-1:1999	Railway applications. Fixed installations. d.c. switchgear. Measurement, control and protection devices for specific use in d.c. traction systems. Application guide Categories: Switchgear and controlgear. Other \| Electric traction equipment Withdrawn begins : 2003-07-14	Withdrawn
DD CLC/TS 50562:2011	Railway applications. Fixed Installations. Process, measures and demonstration of safety for electric traction systems Categories: Electric traction equipment Withdrawn begins : 2018-03-02	Withdrawn
BS EN 62621:2016	Railway applications. Fixed installations. Electric traction. Specific requirements for composite insulators used for overhead contact line systems Categories: Insulators \| Electric traction equipment \| Railway rolling stock. General Withdrawn begins : 2017-01-03	Withdrawn
BS EN 50488:2020	Railway applications. Fixed installations. Electrical protective measures for working on or near an overhead contact line system and/or its associated return circuit Categories: Electric shock protection. Live working \| Railway engineering. General Withdrawn begins : 2021-02-17	Withdrawn
BS EN 50388:2012	Railway Applications. Power supply and rolling stock. Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability Categories: Electric traction equipment \| Railway rolling stock. General Withdrawn begins : 2012-10-01	Withdrawn
BS EN 50388:2005	Railway applications. Power supply and rolling stock. Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability Categories: Electric traction equipment \| Railway rolling stock. General Withdrawn begins : 2010-09-01	Withdrawn
BS EN 50367:2020	Railway applications. Fixed installations and rolling stock. Criteria to achieve technical compatibility between pantographs and overhead contact line Categories: Electric traction equipment Withdrawn begins : 2023-11-17	Withdrawn
BS EN 50367:2012+A1:2016	Railway applications. Current collection systems. Technical criteria for the interaction between pantograph and overhead line (to achieve free access) Categories: Electric traction equipment Withdrawn begins : 2020-09-03	Withdrawn
BS EN 50367:2012	Railway applications. Current collection systems. Technical criteria for the interaction between pantograph and overhead line (to achieve free access) Categories: Electric traction equipment Withdrawn begins : 2012-06-15	Withdrawn
BS EN 50345:2004	Railway applications. Fixed installations. Electric traction. Insulating synthetic rope assemblies for support of overhead contact lines Categories: Electric traction equipment Withdrawn begins : 2009-07-29	Withdrawn

Message Committee Become a committee member

Committee members

Nominating organizations

ABB Ltd
AECOM
Amey plc
Associate Committee Manager
Atkins
B E A M A Networks
BRUSH Switchgear
Committee Manager (External)
Enotrac
G A M B I C A Association Limited
High Speed Two (HS2) Ltd
Individual Capacity - Rail Expert
Institute of Railway Research
Light Rail Safety Standards Board
London Underground Ltd
Network Rail
R S S B - Rail Safety and Standards Board
Rail Delivery Group (Passenger Train Operators)
UK Power Networks
WSP

Liaisons with other committees

Chair – GEL/9
Convenor - CLC/TC9X/SC9XC/WG13
UK Expert - IEC/TC 9/WG 50
UK Expert – CLC/SC 9XC/WG 1
UK expert – CLC/TC 9X/SC 9XC/WG 7

BSI roles

BSI Contact
Committee Chair

Standards Development

GEL/9/3 - Railway Electrotechnical Applications - Fixed Equipment

Committee standards activity