Electrical installations, Low-voltage installations, Electrical equipment, Signals, Low voltage, Signal transmission, Communication equipment, Frequency bands, Electric power system disturbances, Noise (spurious signals), Radio disturbances, Frequency measurement, Electrical wave measurement

EN50065 PLC标准 BS-EN-50065-7-2001；BSI BS EN 50065-2-2-2003 Part 2-2 Immunity requirements for mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in industrial environments