EUROLAB laboratory provides testing and compliance services within the scope of EN 50121-3-2 standard. This standard applies to EMC (Electromagnetic Compatibility) emission and immunity aspects for electrical and electronic equipment intended for use in rolling stock. EN 50121-3-2 applies to the integration of apparatus into rolling stock.
The frequency range considered is DC to 400 GHz. There is no need to measure at frequencies for which no requirements are specified.
The execution of the tests depends on the particular apparatus, its configuration, ports, technology and operating conditions.
This standard takes into account the internal environment of railway cars and the external environment of railways and device interference from equipment such as handheld radio transmitters.
It does not apply to intentional transmission from a radio transmitter as defined by the radiated emissions requirement in this standard if a port is intended to transmit or receive for radio communication purposes (muscular radiators, e.g. transponder systems).
The emissions requirements have been chosen to ensure that the disturbances produced by the apparatus normally operated on railway wagons do not exceed a level that would prevent other apparatus from operating as intended. The emission limits given in this standard take precedence over the emission requirements for individual apparatus in wagons given in other standards.
The purpose of this standard is to define limits and test methods for electromagnetic emissions and immunity test requirements with respect to conducted and radiated disturbances. These limits and tests represent basic electromagnetic compatibility requirements.
The emissions requirements have been chosen to ensure that the disturbances produced by the apparatus normally operated on railway wagons do not exceed a level that would prevent other apparatus from operating as intended. The emission limits given in this standard take precedence over the emission requirements for individual apparatus in wagons given in other standards.
Similarly, the immunity requirements were chosen to provide an adequate level of immunity for rolling stock. However, the levels do not cover all situations that are extremely unlikely to occur anywhere. Special requirements that deviate from this standard will be specified. Test requirements are determined for each port evaluated.
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