The International Electrotechnical Commission (IEC) has released IEC 62488-2:2017. This standard includes Power line communication systems for power utility applications, specifically analogue power line carrier terminals or APLC; and is now available on the IEC webstore.
Description: “IEC 62488-2:2017 applies to Amplitude Modulation Single Sideband (AM-SSB) Analogue Power Line Carrier (APLC) Terminals and Systems used to transmit information over power lines (EHV/HV/MV).
In particular this document covers basically baseband signals with bandwidths of 4 kHz and 2,5 kHz, or multiples thereof, corresponding to the same high frequency bandwidth/s for single or multi-channel APLC terminals.”
*Description from the IEC Website.