DS EN 50065-4-5:2003 Signaling On Low-Voltage Electrical Installations In The Frequency Range 3 Khz To 148.5 Khz - Part 4-5: Low Voltage Decoupling Filter - Segmentation Filter Pertains to segmentation filters in a mains communication system used for single or multiphase installations having a phase to neutral voltage not exceeding 250 V a.c. and a nominal current not exceed