DS EN 50065-4-4:2003
DS EN 50065-4-4:2003 Signaling On Low-Voltage Electrical Installations In The Frequency Range 3 Khz To 148.5 Khz - Part 4-4: Low Voltage Decoupling Filter - Impedance Filter Pertains to impedance filters in a mains communication system for phase to neutral voltage not exceeding 250 V a.c. and a nominal current not exceeding 125 A, intended for household and similar fixed