EN 50065-2-3/A1 [documento electrónico] : signalling on low-voltage electrical installations in the frequency range 3khz to 148,5 khz: part 2-3: immunity requirements, for mains communications equipment and systems operating in the range of frequencies 3 kHz to 95 kHz and intended for use by electricity suppliers and distributors / European Committee for Electrotechnical Standardization