CENELEC - EN 50500
Measurement procedures of magnetic field levels generated by electronic and electrical apparatus in the railway environment with respect to human exposure
|Publication Date:||1 July 2008|
|ICS Code (Radiation measurements):||17.240|
The scope of this product-family standard is limited to apparatus, systems and fixed installations which are intended for use in the railway environment. The frequency range covered is 0 Hz to 300 GHz.
Technical considerations and measurements are necessary for frequencies up to 20 kHz because no relevant field strengths are expected above due to the physical nature of EMF-sources in the railway environment.
The object of this standard is to provide measurement and calculation procedures of electric and magnetic field levels generated by electronic and electrical apparatus in the railway environment with respect to human exposure.
The regulations regarding the protection of human being during exposure to non-ionizing electromagnetic fields in the railway environment are different within the countries of European Community. This standard offers a procedure regarding measurement, simulation and evaluation.
At present two European documents regarding EMF have to be considered:
a) Council Recommendation 1999/519/EC of 12 July 1999 (see Bibliography);
b) Directive 2004/40/EC (see Bibliography).
The measurement procedures and points of measurement cover also the aspect of persons bearing active implantable medical devices.
NOTE 1 Not covered is the risk assessment for persons bearing active implants in magnetic field generated by electronic and electrical apparatus in the railway environment.
Not covered are personal electronic devices (e.g. mobile phones, notebooks, wireless communication systems etc.) of passengers and workers.
Not covered are intentional transmitters with frequencies higher than 20 kHz.
NOTE 2 These apparatus (with a working frequency of 9 kHz or higher) are covered by R&TTE Directive and have to comply also with LVD (Low Voltage Directive). In this view these apparatus have also limitation of EM fields or a "safety-distance" for these apparatus must be given.