International Electrotechnical Commission

Railway applications – Environmental conditions for equipment – Part 3: Equipment for signalling and telecommunications CORRIGENDUM 1 - Edition 1.0
 N 62498-3 CORR 1

Annotation

This part of IEC 62498 specifies the environmental conditions.

The scope of this International 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 International Standard relevant to their use.

This International 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 RAMS (Reliability, Availability, Maintenability, Safety) and life time with respect to environmental condition effects.

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 operating or failure mode of operation) on the overall signalling system safety are not within the scope of this International Standard. This International 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 outside the scope of this International Standard. The effects of vandalism on the equipment are not considered in this International Standard.