EN 50065-2-2:2003

This standard applies to electrical equipment using signals in the frequency range 95 kHz to148,5 kHz to transmit or receive information on low voltage electrical systems, in industrialenvironments. In the case of equipment which includes functions other than the transmission orreception of information on low voltage electrical supplies, this standard applies only to that partof the equipment intended for such transmission or reception of information. Other parts of theequipment shall comply with the immunity standard or standards relevant to the functions of thoseother parts. In the event of tests being specified in those other standards of a different severityand where the construction of the equipment is such that the functions cannot be testedseparately, the higher severity shall apply to all affected functions.The object of this standard is to limit mutual influence between mains communication equipmentand systems (MCES) operating in different frequency bands as defined in EN 50065-1 and tocontribute to ensuring electromagnetic compatibility in general. It specifies essential immunityrequirements and test methods, including those tests which are to be performed during typetestingof MCES on low-voltage installations, for electromagnetic interference in general andmore specific interference coming from other MCES. It therefore defines the immunity testrequirements for apparatus in relation to continuous and transient disturbances, both conductedand radiated, and electrostatic discharges. Test requirements are specified for each portconsidered.This standard gives limits which are applicable to products operating in industrial environments.The levels do not however cover extreme cases which may occur in any location but with a lowprobability of occurrence. In special cases situations will arise where the level of disturbancesmay exceed the levels specified in this standard e.g. where a hand-held transmitter is used inproximity to an apparatus. In these instances special mitigation measures may have to beemployed.It does not specify immunity between mains communication systems operating in the same band(as defined in EN 50065-1) or immunity to signals originating from power line carrier systemsoperating on high or medium voltage networks.