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DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE

Overview

This document specifies the technical parameters of track circuits associated with the interference current emissions limits for RST in the context of interoperability defined in the form of Frequency Management in ERA/ERTMS/033281 v4.0. The limits for compatibility between rolling stock and track circuits addressed in this document allow provision for known interference phenomena linked to traction power supply including associated protection (over voltage, short-circuit current and basic transient effects like in-rush current and power cut-off), and other known sources of interference. This document is intended to be used to assess compliance of track circuits and other forms of train detection systems using the rails as part of their detection principles, in the context of the European Directive on the interoperability of the trans-European railway system and the associated technical specification for interoperability relating to the control-command and signalling track-side subsystems. This document is applicable to track circuits on all lines, including non-electrified lines. The document describes technical parameters to consider for achieving the compatibility of the track circuit with the emissions limits defined in the frequency management for rolling stock (ERA/ERTMS/033281 v4.0). These parameters are structured and allocated according to their basic references as follows: - technical track circuit parameters; - train based parameters; - track based parameters; - environmental and other parameters including EMC. Each parameter is defined by a short general description, the definition of the requirement, the relation to other standards and a procedure to show the fulfilment of the requirement as far as necessary. An overview of the safety relevance of each parameter is given - in the context of this document - in a separate table. However, for track circuits intended to be installed only on non-electrified lines, some parameters can be disapplied. The standard differs from DIN EN 50617-1 (VDE 0831-617-1):2016-05 as follows: a) Clause 6: The technical parameters have been expanded to meet the requirements for demonstrating compliance with the frequency management published in ERA/ERTMS/033281 v4.0; b) Clause 7: has been amended and is now consistent with ERA/ERTMS/033281 v4.0; c) Clause 8: The track-related parameters have been redefined; d) practical examples have been added to Clause 9; e) Annex A: The parameters have been revised for consistency; f) Annex E: A new table has been added for parameters of track circuits that have already been defined as compatible with frequency management according to ERA/ERTMS/033281 v4.0. A subclause has been added to define the link between the current standard and the new standard prepared by SC9XB/WG34 for measuring vehicle emissions for compatibility with track circuits; g) Annex F "Vehicle impedance/guidance for vehicle design to support frequency management" has been deleted, renumbering Annex G to Annex K as Annex F to Annex J; h) new Annex K: new informative annex defining recommended out-of-band frequency limits for 25 kV/50 Hz networks and DC networks; i) Annex L has been deleted. A new Annex L has been added. This document applies to train detection systems that detect the presence of a vehicle via the rails and are also referred to as track circuits. Some typical examples of application are: - to describe the non-detection zone of track circuits; - to detect a broken rail; - to detect the failure of an insulated joint.

Document: references other documents

Responsible national committee

DKE/UK 351.3 - Bahn-Signalanlagen