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).
BS EN 50125-3:2003 Referenced Document
EN 50121-1 Railway applications - Electromagnetic compatibility - Part 1: General*, 2017-01-01 Update
EN 50121-2 Railway applications - Electromagnetic compatibility - Part 2: Emission of the whole railway system to the outside world*, 2017-01-01 Update
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*, 2017-03-01 Update
EN 50125-1:1999 Railway Applications - Environmental Conditions for Equipment Part 1: Equipment on Board Rolling Stock (Incorporating corrigendum May 2010)
EN 60529:1991 Degrees of Protection Provided by Enclosures (IP Code) (Incorporates Amendments A1: 2000 and A2: 2013)
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 Weatherprotected Locations (Incorporates Amendment A2: 1997)
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-Weatherprotected Locations (Incorporates Amendment A1: 1997)
HD 478.2.1 S1-1989 Classification of environmental conditions; part 2: environmental conditions appearing in nature; temperature and humidity
HD 478.2.3 S1-1990 Classification of environmental conditions; part 2: environmental conditions appearing in nature; air pressure
ISO 4354 Wind actions on structures*, 2009-06-01 Update
BS EN 50125-3:2003 history
0000 BS EN 50125-3:2003(2010)
2003BS EN 50125-3:2003 Railway applications. Environmental conditions for equipment. Part 3: Equipment for signalling and telecommunications