4 Narrowband PLC Systems for Local Telematics
4.2 Recommendations for PLC, frequency bands

For the area of broadband PLC systems in the Czech Republic, there was a recommendation EN 50065-1, valid since 1991. The name of this standard is “Signalization in low voltage electrical installations in the frequency range from 3 kHz to 148.5 kHz.” The recommendation specifies particular frequency bands and limits the output voltage, as it is shown in the following figure.

image
Frequency bands and limit values of the output voltage.

Absolute voltage levels of stress in [dBμ] voltage values in [V] can be read from the figure for the corresponding frequency amplitude limits. However, there are a few more standards for the application of narrowband PLC used worldwide.