EN 50125-3:2003
(Main)Railway applications - Environmental conditions for equipment - Part 3: Equipment for signalling and telecommunications
Railway applications - Environmental conditions for equipment - Part 3: Equipment for signalling and telecommunications
This European Standard specifies the environmental conditions encountered within Europe. It can also be applied elsewhere by agreement between the supplier and the customer. The scope of this European Standard covers the design and the use of equipment and any portable equipment for signalling and telecommunications systems (including test, measure, monitoring equipment, etc.). The portable equipment must comply with the sections of this European Standard relevant to their use. This European Standard does not specify the test requirements for equipment. In particular the standard intends to define – interface conditions between the equipment and its environment, – parameters to be used by designers when calculating R.A.M.S. and life time with respect to environmental condition effects. In this respect it gives general guidance in order to allow consistent assessments of contract documentation for European projects. The defined environmental conditions are considered as normal in service. Microclimates surrounding components may need special requirements to be defined by the product standard. The effects of any signalling and telecommunications equipment (in either or failure mode of operation) on the overall signalling system safety are not within the scope of this European Standard. This European Standard does not provide the designer with information to enable him to determine the safety risk associated with environmental conditions. The safety of persons in the vicinity of (or working on) the signalling and telecommunications equipment is also out of the scope of this European Standard. The effects of vandalism on the equipment are not considered in this European Standard. This European Standard applies to all signalling and telecommunications systems except those used for cranes, mining vehicles and cable cars. It does not define the specifications for train-borne signalling and telecommunications systems. The train-borne signalling and telecommunications systems must comply with rolling stock environmental conditions specifications (EN 50125-1).
Bahnanwendungen - Umweltbedingungen für Betriebsmittel - Teil 3: Umweltbedingungen für Signal- und Telekommunikationseinrichtungen
Applications ferroviaires - Conditions d'environnement pour le matériel - Partie 3: Equipement pour la signalisation et les télécommunications
Železniške naprave – Okoljski pogoji za opremo – 3. del: Oprema za signalne in telekomunikacijske naprave
General Information
- Status
- Published
- Publication Date
- 30-Jan-2003
- Withdrawal Date
- 30-Nov-2005
- Technical Committee
- CLC/TC 9X - Electrical and electronic applications for railways
- Drafting Committee
- CLC/SC 9XA - Communications, signalling and processing systems
- Parallel Committee
- IEC/TC 9 - IEC_TC_9
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 24-Oct-2018
- Completion Date
- 23-Sep-2025
Relations
- Effective Date
- 23-Jan-2024
Overview
EN 50125-3:2003 (CLC) is the European standard that defines the environmental conditions for signalling and telecommunications equipment used in railway applications. It specifies the interface conditions between equipment and its environment and the environmental parameters designers should use when calculating R.A.M.S. (Reliability, Availability, Maintainability, Safety) and equipment lifetime with respect to environmental effects. The standard covers fixed and portable signalling/telecom equipment (including test and monitoring instruments) installed in cubicles, shelters/containers and buildings. It is normative across Europe and may be applied elsewhere by agreement between supplier and customer.
Key topics and technical requirements
- Scope and exclusions
- Applies to signalling and telecommunications systems (excludes cranes, mining vehicles, cable cars and train‑borne systems - the latter fall under EN 50125-1).
- Does not specify test procedures, safety risk assessment or vandalism effects.
- Environmental parameters defined
- Temperature ranges for external ambient and internal locations (cubicles, shelters, buildings) across climatic classes (examples are specified in tabular form).
- Pressure/altitude classes (A1, A2, AX) and tunnel pulse pressure effects (typical ΔP ≈ ±5 kPa; ΔP/Δt ≈ 0.5–1 kPa/s).
- Humidity, wind, rain, snow, ice, solar radiation, lightning, pollution, fire protection, vibrations and shocks, electromagnetic compatibility, power supplies.
- Equipment types & enclosures
- Definitions and design implications for equipment housing, cubicle, shelter/container, and building (including climatic control classes).
- Supporting data and annexes
- Normative annexes include climatograms and vibration spectra; informative annexes provide factors and regional examples to support consistent specification.
Practical applications - who uses EN 50125-3
- Signalling and telecommunications equipment designers - to define environmental interface parameters for product specifications and RAMS studies.
- System integrators and contractors - to prepare and assess tender/contract documentation with consistent environmental classes.
- Railway operators / asset owners - to specify environmental requirements for procurements and site installations.
- Qualification and reliability engineers - to select design margins and lifetime models based on standardised environmental inputs.
- Standards writers and test laboratories - as a reference for environmental boundary conditions (note: test methods are not provided by this standard).
Related standards
- EN 50125-1 (rolling stock environmental conditions)
- EN 50121 series (electromagnetic compatibility)
- EN 50124-2 (insulation/overvoltages)
- IEC/EN standards for IP codes and environmental classification (e.g., IEC 60529, EN 60721)
Keywords: EN 50125-3, railway environmental conditions, signalling equipment, telecommunications equipment, CENELEC, RAMS, temperature ranges, vibration, EMC, altitude, climatograms.
Frequently Asked Questions
EN 50125-3:2003 is a standard published by CLC. Its full title is "Railway applications - Environmental conditions for equipment - Part 3: Equipment for signalling and telecommunications". This standard covers: This European Standard specifies the environmental conditions encountered within Europe. It can also be applied elsewhere by agreement between the supplier and the customer. The scope of this European Standard covers the design and the use of equipment and any portable equipment for signalling and telecommunications systems (including test, measure, monitoring equipment, etc.). The portable equipment must comply with the sections of this European Standard relevant to their use. This European Standard does not specify the test requirements for equipment. In particular the standard intends to define – interface conditions between the equipment and its environment, – parameters to be used by designers when calculating R.A.M.S. and life time with respect to environmental condition effects. In this respect it gives general guidance in order to allow consistent assessments of contract documentation for European projects. The defined environmental conditions are considered as normal in service. Microclimates surrounding components may need special requirements to be defined by the product standard. The effects of any signalling and telecommunications equipment (in either or failure mode of operation) on the overall signalling system safety are not within the scope of this European Standard. This European Standard does not provide the designer with information to enable him to determine the safety risk associated with environmental conditions. The safety of persons in the vicinity of (or working on) the signalling and telecommunications equipment is also out of the scope of this European Standard. The effects of vandalism on the equipment are not considered in this European Standard. This European Standard applies to all signalling and telecommunications systems except those used for cranes, mining vehicles and cable cars. It does not define the specifications for train-borne signalling and telecommunications systems. The train-borne signalling and telecommunications systems must comply with rolling stock environmental conditions specifications (EN 50125-1).
This European Standard specifies the environmental conditions encountered within Europe. It can also be applied elsewhere by agreement between the supplier and the customer. The scope of this European Standard covers the design and the use of equipment and any portable equipment for signalling and telecommunications systems (including test, measure, monitoring equipment, etc.). The portable equipment must comply with the sections of this European Standard relevant to their use. This European Standard does not specify the test requirements for equipment. In particular the standard intends to define – interface conditions between the equipment and its environment, – parameters to be used by designers when calculating R.A.M.S. and life time with respect to environmental condition effects. In this respect it gives general guidance in order to allow consistent assessments of contract documentation for European projects. The defined environmental conditions are considered as normal in service. Microclimates surrounding components may need special requirements to be defined by the product standard. The effects of any signalling and telecommunications equipment (in either or failure mode of operation) on the overall signalling system safety are not within the scope of this European Standard. This European Standard does not provide the designer with information to enable him to determine the safety risk associated with environmental conditions. The safety of persons in the vicinity of (or working on) the signalling and telecommunications equipment is also out of the scope of this European Standard. The effects of vandalism on the equipment are not considered in this European Standard. This European Standard applies to all signalling and telecommunications systems except those used for cranes, mining vehicles and cable cars. It does not define the specifications for train-borne signalling and telecommunications systems. The train-borne signalling and telecommunications systems must comply with rolling stock environmental conditions specifications (EN 50125-1).
EN 50125-3:2003 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.
EN 50125-3:2003 has the following relationships with other standards: It is inter standard links to prEN 50125:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 50125-3:2003 is associated with the following European legislation: EU Directives/Regulations: 2001/16/EC, 2008/57/EC, 96/48/EC; Standardization Mandates: M/024. 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.
You can purchase EN 50125-3:2003 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2003
Železniške naprave – Okoljski pogoji za opremo – 3. del: Oprema za signalne in
telekomunikacijske naprave
Railway applications - Environmental conditions for equipment -- Part 3: Equipment for
signalling and telecommunications
Bahnanwendungen - Umweltbedingungen für Betriebsmittel -- Teil 3:
Umweltbedingungen für Signal- und Telekommunikationseinrichtungen
Applications ferroviaires - Conditions d'environnement pour le matériel -- Partie 3:
Equipement pour la signalisation et les télécommunications
Ta slovenski standard je istoveten z: EN 50125-3:2003
ICS:
13.020.99 Drugi standardi v zvezi z Other standards related to
varstvom okolja environmental protection
33.040.99 Druga oprema za Other equipment for
telekomunikacijske sisteme telecommunication systems
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 50125-3
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2003
ICS 29.280
English version
Railway applications -
Environmental conditions for equipment
Part 3: Equipment for signalling and telecommunications
Applications ferroviaires - Bahnanwendungen -
Conditions d'environnement Umweltbedingungen für Betriebsmittel
pour le matériel Teil 3: Umweltbedingungen für Signal-
Partie 3: Equipement pour la signalisation und Telekommunikationseinrichtungen
et les télécommunications
This European Standard was approved by CENELEC on 2002-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50125-3:2003 E
Foreword
This European Standard was prepared by SC 9XA, Communication, signalling and processing systems,
of Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50125-3 on
2002-12-01.
This European Standard was prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and supports the essential requirements of
Directive 96/48/EC.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-12-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-12-01
Annexes designated « normative » are part of the body of the standard.
Annexes designated « informative » are given for information only.
In this European Standard, Annexes A and C are normative and Annexes B and D are informative.
– 3 – EN 50125-3:2003
Contents
Page
1 Scope.5
2 Normative references.5
3 Definitions.6
4 Environmental conditions.7
4.1 General.7
4.2 Pressure.7
4.3 Temperature.8
4.4 Humidity.9
4.5 Wind.10
4.6 Rain.11
4.7 Snow and hail .11
4.8 Ice.11
4.9 Solar radiation.12
4.10 Lightning.12
4.11 Pollution.12
4.12 Fire protection.13
4.13 Vibrations and shocks .13
4.14 Electromagnetic compatibility.15
4.15 Power supplies.15
Annex A (normative) Climatograms.16
Annex B (informative) Examples of q and c factors .22
Annex C (normative) Vibrations .23
Annex D (informative) Example of European regions and theirs appropriate climatic classes.27
Bibliography.28
Figure A.1 - Temperature and humidity in external ambient . 16
Figure A.2 - Temperature and humidity in cubicle. 17
Figure A.3 - Temperature and humidity in shelter N.T.C. 18
Figure A.4 - Temperature and humidity in shelter T.C. . 19
Figure A.5 - Temperature and humidity in building N.C.C. 20
Figure A.6 - Temperature and humidity in building C.C. . 21
Figure C.1 - Power spectral density of vibrations on rail . 23
Figure C.2 - Power spectral density of vibrations on sleeper . 24
Figure C.3 - Power spectral density of vibrations on ballast . 25
Figure C.4 - Power spectral density of vibrations outside the track
(from 1 m to 3 m from the rail) . 26
Table 1 - Altitude relative to sea level. 7
Table 2 - Temperature ranges at different sites . 8
Table 3 - Humidity ranges at different sites. 10
Table 4 - External ambient pollution levels . 13
Table 5 - Acceleration at track side positions. 14
Table 6 - Shocks at different track side positions (vertical axis) . 14
Table B.1 - Pressure head in relation to air speed. 22
Table B.2 - Typical values of form factor c. 22
– 5 – EN 50125-3:2003
1 Scope
This European Standard specifies the environmental conditions encountered within Europe. It can also be
applied elsewhere by agreement between the supplier and the customer.
The scope of this European Standard covers the design and the use of equipment and any portable
equipment for signalling and telecommunications systems (including test, measure, monitoring
equipment, etc.).
The portable equipment must comply with the sections of this European Standard relevant to their use.
This European Standard does not specify the test requirements for equipment.
In particular the standard intends to define
– interface conditions between the equipment and its environment,
– parameters to be used by designers when calculating R.A.M.S. and life time with respect to
environmental condition effects.
In this respect it gives general guidance in order to allow consistent assessments of contract
documentation for European projects.
The defined environmental conditions are considered as normal in service.
Microclimates surrounding components may need special requirements to be defined by the product
standard.
The effects of any signalling and telecommunications equipment (in either or failure mode of operation)
on the overall signalling system safety are not within the scope of this European Standard. This European
Standard does not provide the designer with information to enable him to determine the safety risk
associated with environmental conditions. The safety of persons in the vicinity of (or working on) the
signalling and telecommunications equipment is also out of the scope of this European Standard. The
effects of vandalism on the equipment are not considered in this European Standard.
This European Standard applies to all signalling and telecommunications systems except those used for
cranes, mining vehicles and cable cars. It does not define the specifications for train-borne signalling and
telecommunications systems.
The train-borne signalling and telecommunications systems must comply with rolling stock environmental
conditions specifications (EN 50125-1).
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 50121-1 Railway applications – Electromagnetic compatibility – Part 1: General
EN 50121-2 Railway applications – Electromagnetic compatibility – Part 2: Emission of the
whole railway system to the outside world
EN 50121-4 Railway applications – Electromagnetic compatibility – Part 4: Emission and
immunity of the signalling and telecommunications apparatus
EN 50124-2 Railway applications – Insulation coordination – Part 2: Overvoltages and
related protection
EN 50125-1 1999 Railway applications – Environmental conditions for equipment – Part 1:
Equipment on board rolling stock
EN 60529 1991 Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 60721-3-3 1995 Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at
weather protected locations (IEC 60721-3-3:1994)
EN 60721-3-4 1995 Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 4: Stationary use at
non-weather protected locations (IEC 60721-3-4:1995)
HD 478.2.1 S1 1989 Classification of environmental conditions – Part 2: Environmental conditions
appearing in nature – Temperature and humidity
(IEC 60721-2-1:1982 + A1:1987)
HD 478.2.3 S1 1990 Classification of environmental conditions – Part 2: Environmental conditions
appearing in nature – Air pressure (IEC 60721-2-3:1987)
ISO 4354 Wind actions on structures
3 Definitions
For the purposes of this standard, the following definitions apply:
3.1
environmental conditions
range of physical, chemical, electrical and biological conditions external to the equipment to which it is
subjected in service
3.2
equipment housing
case, or other protective housing, provided by the manufacturer to mount his equipment and protect it
from accidental damage, and occasionally from EMC or environmental effects. It may offer protection to
personnel e.g. from electric shock.
Where the equipment housing provides the full required environmental protection, then it is treated as a
cubicle to define the relevant environmental parameters.
The housing normally contains only the single suppliers' equipment, and is only a part of a signalling or
telecommunications system
3.3
cubicle
housing for apparatus which normally is used to co-locate various parts of the signalling or
telecommunications system equipment, on occasion from different suppliers. It may contain various
equipment housings installed within the cubicle and offers further environmental protection.
A cubicle is normally only used to install apparatus and is in general not sufficiently large to afford
protection from weather to staff working on the apparatus.
No climatic or temperature control is provided on cubicles but ventilation or occasionally fan assisted
ventilation is required.
Large housings which allow access to personnel but do not have the thermal properties of shelters,
should be treated as cubicles
– 7 – EN 50125-3:2003
3.4
shelter/container
shelters/containers are normally provided when a larger volume of equipment is to be co-located at a
single point or temperature/humidity sensitive equipment is to be installed.
Shelters/containers normally have double walls with insulation material (or an air gap) between them.
Shelters/containers also normally have limited facilities for personnel.
Shelters/containers may also be provided with temperature control, especially where temperature
sensitive apparatus is installed.
Where shelters/containers are fitted with climatic control (temperature and humidity control), they shall be
treated as buildings with climatic control (buildings C.C.)
3.5
building
permanent construction provided with main services (e.g. water, electricity, gas,.) designed to protect
equipment against the action of environmental conditions. A building may or may not be provided with
climatic control
4 Environmental conditions
4.1 General
In the text, normal environmental conditions for Europe are classified with a suffix 1, 2, and special
conditions with a suffix X.
The customer shall specify clearly in his technical specification the required class for each environmental
parameter. If no class is specified, the class with suffix 1 shall be assumed.
The severities specified are those which will have a low probability of being exceeded. All specified
values are maximum or limit values. These values may be reached, but do not occur permanently.
Depending on the situation there may be different frequencies of occurrence related to a certain period of
time. Such frequencies of occurrence have not been included in this European Standard, but should be
considered for any environmental parameter.
They should additionally be specified if applicable.
4.2 Pressure
4.2.1 Altitude
Table 1 gives the different classes of altitude relative to sea level at which the equipment shall perform as
specified.
Table 1 - Altitude relative to sea level
Classes Altitude range relative to
sea level
m
A1 up to 1 400
A2 up to 1 000
AX more than 1 400
Using AX class, the maximum altitude shall be specified by the customer.
Altitude is relevant, in particular for the air pressure level and its consequence on cooling systems. The
air pressure shall be considered according to HD 478.2.3.
4.2.2 Pulse pressure
Particular local air pressure conditions may exist due to the effects of trains running through a tunnel.
The typical variation of pressure caused by train entering tunnel is:
ΔP = ± 5 kPa
The associated rate of change of pressure is:
ΔP/Δt = 0,5 to 1 kPa/s
4.3 Temperature
Table 2 shows the overall system air temperature parameters.
Table 2 - Temperature ranges at different sites
a b a b
In shelter In building
Climatic External
a b
In cubicle
classes ambient c d c e
N.T.C. T.C. N.C.C. C.C.
T1 (-25 +40) °C (-25 +70) °C (-5 +55) °C (+15 +30) °C (0 +45) °C (+18 +27) °C
T2 (-40 +35) °C (-40 +65) °C (-20 +50) °C (+15 +30) °C (-5 +40) °C (+18 +27) °C
TX (-55 +40) °C (-55 +70) °C (-35 +55) °C (+15 +30) °C (-5 +45) °C (+18 +27) °C
a
The temperatures inside cubicle, shelter or building are values measured in free air not directly adjacent to heat emitting
elements.
b
The maximum temperatures inside a cubicle, a shelter N.T.C. and a building N.C.C. are higher than max. ambient temperatures
because of the effects of solar radiation and power dissipation of installed equipment
c
The higher values of lowest temperatures compared to those for external ambient are due to heat emitting equipment.
d
3K2 of EN60721-3-3
e
3K1 of EN60721-3-3
C.C. : with climatic control. T.C. : with temperature control.
N.C.C. : without climatic control N.T.C. : without temperature control
The above table was derived from HD 478.2.1 where open air temperatures are measured 2 m above
ground. All classes have been extended at the lower temperatures to allow for installation of signalling
and telecommunications equipment at ground lev
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Die Norm EN 50125-3:2003 behandelt die Umweltbedingungen für Ausrüstungen im Bereich der Signal- und Telekommunikationssysteme im Eisenbahnwesen. Der Anwendungsbereich dieser europäischen Norm ist besonders relevant, da sie die umweltlichen Gegebenheiten spezifiziert, denen die Ausrüstungen in Europa ausgesetzt sind, und somit eine wichtige Grundlage für die Planung und Nutzung von Signal- und Telekommunikationssystemen bietet. Ein wesentlicher Stärke dieser Norm ist ihre umfassende Definition der Schnittstellenbedingungen zwischen der Ausrüstung und ihrer Umgebung. Dies hilft Designern dabei, präzise Berechnungen hinsichtlich der Zuverlässigkeit, Verfügbarkeit, Wartbarkeit und Sicherheit (R.A.M.S.) sowie der Lebensdauer in Bezug auf die Auswirkungen von Umweltbedingungen durchzuführen. Diese allgemeinen Leitlinien ermöglichen konsistente Bewertungen von Vertragsunterlagen für europäische Projekte, was für die Effizienz und Qualität in der Eisenbahnindustrie von großer Bedeutung ist. Darüber hinaus befasst sich die Norm mit tragbarer Ausrüstung und legt fest, dass diese ebenfalls den relevanten Abschnitten der Norm entsprechen müssen. Dies fördert ein einheitliches Verständnis und gewährleistet die Kompatibilität der Geräte bei unterschiedlichen Anwendungen. Die Norm hebt auch hervor, dass spezielle Anforderungen in Mikrokli ma umgebenden Komponenten definiert werden müssen, um sicherzustellen, dass alle Geräte unter verschiedenen Betriebsbedingungen zuverlässig funktionieren. Diese Detailtiefe trägt dazu bei, die Qualität und Sicherheit von Signal- und Telekommunikationssystemen zu verbessern. Es ist jedoch wichtig zu beachten, dass die Norm nicht die Testanforderungen für die Ausrüstungen selbst spezifiziert und auch die Sicherheitsrisiken, die mit Umweltbedingungen verbunden sind, nicht behandelt. Insbesondere die Sicherheit von Personen in der Nähe der Ausrüstung sowie die Auswirkungen von Vandalismus werden in dieser Norm nicht berücksichtigt. Diese Aspekte könnten in anderen Normen thematisiert werden, was einen klaren Rahmen für Designer und Ingenieure schafft. Trotz dieser Einschränkungen bleibt die EN 50125-3:2003 äußerst relevant für alle Signal- und Telekommunikationssysteme innerhalb des europäischen Eisenbahnumfeldes, ausgenommen Krane, Bergbaufahrzeuge und Seilbahnen, sowie festgelegte Bedingungen für im Zug installierte Systeme, die gemäß EN 50125-1 eingehalten werden müssen. Insgesamt bietet die EN 50125-3:2003 eine wertvolle Orientierung und Sicherheitsgrundlage für die Entwicklung und Implementierung von Signal- und Telekommunikationssystemen und ist damit ein unverzichtbares Dokument für Fachleute in der Branche.
SIST EN 50125-3:2003은 유럽 내 철도 응용 분야의 환경 조건에 대한 표준으로, 신호 및 통신 장비를 위한 장비의 설계 및 사용에 대해 명확하게 정의하고 있습니다. 이 표준은 유럽에서Encounterd하는 환경 조건을 규정하며, 공급자와 고객 간의 합의에 따라 다른 지역에도 적용될 수 있습니다. 이 문서는 신호 및 통신 시스템, 특히 테스트와 측정 장비, 모니터링 장비를 포함하는 모든 포터블 장비의 관련 섹션을 준수해야 함을 명시합니다. 또한, 설계자가 환경 조건의 영향을 고려하여 RAMS(신뢰성, 가용성, 유지보수성 및 안전성) 및 제품 수명의 계산에 사용할 수 있는 매개변수를 정의하는 데 도움을 줍니다. 이 표준의 강점 중 하나는 계약 문서의 일관된 평가를 위한 일반적인 지침을 제공하여 유럽 프로젝트에서 적용할 수 있는 환경 조건을 설정한다는 점입니다. 일반적으로 서비스 중 정상적인 환경 조건으로 간주되는 사례를 다루면서도, 특정 제품 표준에 의해 정의되어야 할 특수 요구사항들 역시 반영될 수 있습니다. 그러나 SIST EN 50125-3:2003은 장비의 시험 요구 사항이나 장비와 환경 간의 인터페이스 조건, 환경 조건과 관련된 안전 위험을 판단하기 위한 정보를 제공하지 않습니다. 장비 주변에서 작업하는 인원들의 안전이나 장비에 대한 파손 행위의 영향을 고려하지 않으며, 크레인, 채굴 차량 및 케이블카에 사용되는 시스템은 이 표준의 적용 범위에 포함되지 않습니다. 또한 기차에 장착된 신호 및 통신 시스템에 대한 규정도 명시하고 있지 않습니다. 결론적으로, SIST EN 50125-3:2003은 신호 및 통신 장비에 대한 환경 조건을 정의하는 데 있어 필수적인 기준을 제공하며, 유럽 내 철도 응용 분야에 관한 신뢰할 수 있는 지침을 제시합니다.
The EN 50125-3:2003 standard provides a comprehensive framework for evaluating environmental conditions specific to equipment used in signalling and telecommunications within the railway sector. The scope of this European Standard is notably expansive, addressing both the design and operational aspects of equipment, including portable devices utilized in various signalling and telecommunications systems. One of the significant strengths of this standard is its clarity in defining interface conditions between the equipment and its environmental context. By establishing foundational parameters for designers to consider when calculating Reliability, Availability, Maintainability, and Safety (R.A.M.S.) alongside expected lifespan, EN 50125-3:2003 fosters a consistent approach to project documentation across Europe. This aligns well with the growing need for harmonization in environmental condition assessments for railway systems. Moreover, the standard's emphasis on environmental conditions deemed normal in service positions it as a relevant and practical resource for designers. The provision for adjustments to consider microclimates around components ensures that the standard remains useful in realistic applications where environmental impacts vary significantly. While the EN 50125-3:2003 standard delineates its purview, it is essential to note the specific exclusions regarding safety risks and the effects of vandalism. By intentionally leaving these aspects out of its scope, the standard allows for targeted compliance and accountability in safety measures outside its jurisdiction. This delineation ensures that the focus remains on environmental conditions rather than broader safety implications, which may be addressed separately in other standards. It is also worth highlighting that the EN 50125-3:2003 standard applies universally to signalling and telecommunications systems, with the exception of those linked to cranes, mining vehicles, and cable cars, reinforcing its particular relevance to the railway industry. In summary, EN 50125-3:2003 serves as an essential guideline for the railway sector, providing a structured understanding of environmental conditions relevant to signalling and telecommunications. Its well-defined scope and emphasis on design parameters equip professionals with the necessary tools for ensuring equipment reliability and functionality across various European projects.
La norme EN 50125-3:2003 adresse de manière exhaustive les conditions environnementales rencontrées par les équipements de signalisation et de télécommunications dans le cadre des applications ferroviaires en Europe. Son champ d'application va au-delà du simple cadre européen, permettant son utilisation ailleurs par accord entre le fournisseur et le client, ce qui témoigne de sa flexibilité et de son adaptabilité. Parmi ses points forts, la norme établit des lignes directrices claires pour la conception et l'utilisation de l'équipement et des équipements portables, y compris ceux destinés aux tests, aux mesures et à la surveillance. Elle propose également une évaluation des conditions d'interface entre l'équipement et son environnement, ce qui est essentiel pour garantir la performance et la fiabilité en service. Les recommandations fournies concernant les paramètres utilisés par les concepteurs pour calculer la disponibilité, la fiabilité, la maintenabilité et la sécurité (R.A.M.S.) ainsi que la durée de vie, en prenant en compte les effets des conditions environnementales, sont d'une grande pertinence pour les projets ferroviaires européens. En ce qui concerne la sécurité, il est important de noter que la norme ne couvre pas les risques associés aux conditions environnementales ni les effets de l'équipement sur la sécurité globale du système de signalisation. Cela souligne la nécessité pour les concepteurs de consulter d'autres références normatives afin d'évaluer les risques potentiels. De plus, la standardisation ne prend pas en compte la sécurité des personnes à proximité de l'équipement, ni les impacts de la dégradation ou du vandalisme sur celui-ci. La norme EN 50125-3:2003 s'applique à tous les systèmes de signalisation et de télécommunications, sauf ceux spécifiques aux grues, véhicules miniers et téléphériques, et elle exclut également les spécifications pour les systèmes de signalisation et de télécommunications embarqués, qui doivent se conformer aux spécifications environnementales des véhicules (EN 50125-1). En résumé, cette norme représente un cadre essentiel pour les équipements de signalisation et de télécommunications dans le secteur ferroviaire, offrant des bases solides pour une gestion adéquate des conditions environnementales, tout en reconnaissant les limites en matière de sécurité et en soulignant la nécessité d'une évaluation rigoureuse.
SIST EN 50125-3:2003は、鉄道アプリケーションにおける信号および通信装置の環境条件を定義するための重要な基準です。この欧州基準は、ヨーロッパ内で遭遇する環境条件を具体的に規定しており、供給者と顧客の合意により他の地域にも適用可能です。 この基準の強みは、信号および通信システムに関連する設計や使用に関する包括的なガイダンスを提供することにあります。特に、機器とその環境とのインターフェース条件や、環境条件が及ぼす影響を考慮したR.A.M.S.（信頼性、可用性、保守性、耐障害性）及び耐用年数の計算に必要なパラメータを設計者に提示します。このように、契約文書の一貫した評価を行うための基準を提供することにより、ヨーロッパプロジェクト全体の整合性を保つ助けとなります。 定義された環境条件は、通常のサービス条件と見なされており、信号および通信装置の設計において重要な要素です。ただし、基準はテスト要件を明確に示しておらず、特にマイクロクライメートに関する特別な要件は、製品基準によって別途定義される必要があります。 また、信号システム全体の安全性に対する影響や、機器周辺での人々の安全性に関する情報は含まれておらず、これにより設計者が環境条件に関連する安全リスクを判断するための情報は提供されていません。この基準は、クレーン、鉱業車両、ケーブルカー用の信号および通信システムには適用されず、車両搭載の信号および通信システムについては、別途EN 50125-1の環境条件要件に従う必要があります。 このように、SIST EN 50125-3:2003は、信号および通信システムの設計者にとって極めて重要な指針を提供し、環境条件に対する包括的な理解を促進します。
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