BS EN 50561-3 is a safety standard on power line communication apparatus used in low-voltage installations.
BS EN 50561-3 specifies limits and methods of measurement of radio disturbance characteristics for in-home communication apparatus that use the low voltage power installation as the transmission medium. BS EN 50561-3 applies to equipment that uses frequencies including those above 30 MHz to communicate.
Procedures are given for the measurement of signals generated by the equipment and limits are specified within the frequency range 9 kHz to 400 GHz. No measurement is required at frequencies where no limits are specified.
Note 1: The radiated emission requirements in BS EN 50561-3 are not intended to be applicable to the intentional transmissions from a radio transmitter as defined by the ITU, nor to any spurious emissions related to these intentional transmissions.
Note 2: The requirements defined in BS EN 50561-3 effectively restrict the intended transmission frequencies to below 87,5 MHz.
BS EN 50561-3 on power line communication apparatus used in low-voltage installations is relevant to:
Power line communication carries data on a conductor that is also used simultaneously for AC electric power transmission or electric distribution.
BS EN 50561-3 assists with AC mains power port that is a port that connects to the low voltage AC mains power network for the sole purpose of supplying electrical energy to the EUT and AC mains output port, i.e., port of the EUT that provides AC mains power to other apparatus. BS EN 50561-3 also assists on a measurement network that provides a defined impedance at high frequencies across the power feed at the point of measurement of the terminal voltage and provides isolation of the circuit under test from the ambient noise on the power lines. The network also provides guidance on a defined coupling path between EUT and AE.
Overall, BS EN 50561-3 is useful as it aids on the point of connection for voice, data, and signalling transfers intended to interconnect widely dispersed systems via such means as a direct connection to multi-user telecommunications networks (e.g., public switched telecommunications networks (PSTN) integrated services digital networks (ISDN), x-type digital subscriber lines (xDSL), etc.), local area networks (e.g., Ethernet, Token Ring, etc.), and similar networks.
EN 50561-3:2016