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ILNAS EN 50155

Railway applications - Rolling stock - Electronic equipment

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Number of Standard:ILNAS EN 50155
Category:333555
Released:2021
DESCRIPTION

EN 50155:2021


Railway applications - Rolling stock - Electronic equipment - This European Standard applies to all electronic equipment for control, regulation, protection, diagnostic, energy supply, etc. installed on rail vehicles. For the purpose of this European Standard, electronic equipment is defined as equipment mainly composed of semiconductor devices and recognized associated components. These components will mainly be mounted on printed boards. Sensors (current, voltage, speed, etc.) and Semiconductor drive unit (SDU) for power electronic devices are covered by this standard. Complete Semiconductor drive unit (SDU) and power converters are covered by EN 61287 1. This European Standard covers the conditions of operation, design requirements, documentation, and testing of electronic equipment, as well as basic hardware and software requirements considered necessary for compliant and reliable equipment. Specific requirements related to practices necessary to ensure defined levels of functional safety will be determined in accordance with relevant railway safety standards. The software requirements for on board railway equipment are specified by EN 50657.

The price of the Standard included all amendments and correcturs.

Contents
European foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviations
4 General requirements
4.1 Requirement for equipment characteristics
4.2 Classes of environmental, constructional and service conditions
4.3 Performance criteria
4.4 Environmental service conditions
4.5 Special service conditions
4.6 Installation requirements
5 Electrical service conditions
5.1 General
5.2 Battery voltage supply system
5.3 Supply by another source than the vehicle battery
6 Reliability, maintainability and expected useful life
6.1 Equipment reliability
6.2 Useful life
6.3 Maintainability
6.4 Automatic test equipment
6.5 Purpose-built test equipment and special tools
7 Design
7.1 General
7.2 Detailed practices - Hardware
7.3 Detailed practices - Software
7.4 Features of software-controlled equipment
8 Electronic equipment not designed for use on rolling stock
9 Components
9.1 Procurement
9.2 Application
10 Construction
10.1 Equipment construction
10.2 Component mounting
10.3 Electrical connections
10.4 Internal flexible wiring (electrical and optical)
10.5 Flexible printed wiring
10.6 Printed circuit boards - flexible and rigid
10.7 Protective coatings for printed board assemblies
10.8 Identification
10.9 Mounting
10.10 Cooling and ventilation
10.11 Materials and finishes
10.12 Reworking, modification and repair of electronic assemblies
11 Safety
11.1 General
11.2 Personnel safety
11.3 Functional safety
11.4 Fire behaviour requirements
12 Documentation
12.1 General
12.2 Supply and storage of documentation
12.3 Datasheet
12.4 User and maintenance manual
12.5 Equipment installation documentation
12.6 Commissioning documentation
12.7 Design documentation
13 Testing
13.1 General
13.2 Categories of tests
13.3 List of tests and test conditions
13.4 Test specification
Annex A (informative) List of default requirements of EN 50155 and related subclauses
Annex B (informative) System testing approach
B.1 General
B.2 Situation of applicability
B.3 General methodology
B.3.1 General
B.3.2 Item specific procedures
B.3.3 Equipment specific steps
B.4 Equipment integration design review
B.5 Equipment integration type test
B.6 Equipment installation design review
B.7 Equipment installation type test
B.8 Equipment installation routine test
B.9 Equipment periodic re-verification
B.10 Replacement of items and ancillary components
Annex C (informative) Severity level of service conditions in different vehicle locations
C.1 General
C.2 Severity of service conditions in different rolling stock types
C.3 Intended use of rolling stock
C.4 Location of equipment on-board rolling stock
C.5 Severity of the service conditions in different rolling stock locations
Annex D (informative) Example for a summary of equipment type test compliance
Annex E (informative) User programmable integrated circuit life cycle example
Annex F (informative) Design suggestions for electronic hardware used on rolling stock
F.1 Purpose of this annex
F.2 Design topics
F.2.1 Pollutants
F.2.2 Methods against ageing regarding energetic transient pulses
F.2.3 Capacitors to earth
F.2.4 Inside cabling for equipment
F.2.5 Earth configuration
F.2.6 Prototype testing
F.2.7 Interfacing
F.2.8 Solder joint on PBA
F.2.9 Derating
Annex G (informative) Electronic equipment not designed for use on rolling stock
Annex H (informative) Paragraphs with Agreements between the involved Parties
Annex I (informative) Electronic equipment supplied from AC supply system
I.1 General
I.2 Electric requirements
Annex J (informative) Typical content of datasheets
Annex K (informative) Insulation test and testing matrix example
Annex L (informative) Relationship between this European Standard and the Essential Requirements
of EU Directive 2016/797/EU aimed to be covered

Bibliography

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