EN 50065-4-4:2023

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-4: Low voltage decoupling filter - Impedance filter

This document applies to impedance filters in a mains communication system, intended for utility networks or household and similar fixed installation including residential, commercial and light industrial buildings. These filters are used to set a suitable impedance, in the nominal frequency range of the mains signalling system, at any point of the low voltage mains network where a low impedance equipment is connected, as shown in Figure 1, in order to allow reliable operation of the mains signalling system. Impedance filters can be used either in utility or consumer networks. They can also be used in conjunction with incoming filters and segmentation filters. [Figure 1 - The application of impedance filters]

Signalübertragung auf elektrischen Niederspannungsnetzen im Frequenzbereich 3 kHz bis 148,5 kHz - Teil 4-4: Niederspannungs-Entkopplungsfilter - Impedanzfilter

Transmission de signaux sur les réseaux électriques basse tension dans la bande de fréquences de 3 kHz à 148,5 kHz - Partie 4-4: Filtres de découplage basse tension - Filtre d'impédance

Le présent document s'applique aux filtres d'impédance utilisés dans un système de communication sur le réseau électrique destiné aux réseaux des distributeurs d'énergie ou aux installations fixes domestiques et analogues, y compris les bâtiments résidentiels, commerciaux et de l'industrie légère. Ces filtres sont utilisés pour établir une impédance adéquate, dans la gamme de fréquences nominales du système de transmission de signaux du réseau électrique, en tout point du réseau électrique basse tension où est connecté un appareil de faible impédance, comme cela est représenté à la Figure 1, afin d'assurer le fonctionnement fiable du système de transmission de signaux du réseau électrique. Les filtres d'impédance peuvent être utilisés dans les réseaux des distributeurs d'énergie ou des consommateurs. Ils peuvent également être utilisés en association avec des filtres de branchement et des filtres de segmentation. [Figure 1 - Application des filtres d'impédance]

Signalizacija po nizkonapetostnih električnih napeljavah v frekvenčnem območju od 3 kHz do 148,5 kHz - 4-4. del: Nizkonapetostni ločilni filtri - Impedančni filter

Standard se uporablja za impedančne filtre v omrežnem komunikacijskem sistemu, ki so namenjeni komunalnim omrežjem ali gospodinjstvom in stanovanjskim, poslovnim in lahkim industrijskim objektom s podobno fiksno inštalacijo. Ti filtri se uporabljajo za vzpostavitev ustrezne impedance v nazivnem frekvenčnem območju signalnega sistema električnega omrežja na kateri koli točki nizkonapetostnega omrežja, kjer je priključena oprema z nizko impedanco za zagotavljanje zanesljivega delovanja signalnega sistema omrežja. Impedančni filtri se lahko uporabljajo v komunalnem omrežju ali omrežju odjemalcev. Uporabljajo se lahko tudi v povezavi z vhodnimi in segmentacijskimi filtri.

General Information

• Status: Published
• Publication Date: 23-Mar-2023
• ICS: 31.160 - Electric filters
• ICS: 33.040.30 - Switching and signalling systems
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: CLC/TC 205A - Mains communicating systems
• Drafting Committee: CLC/TC 205A/WG 12 - Filters
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Mar-2023
• Due Date: 10-Sep-2022
• Completion Date: 24-Mar-2023
• Directive: Not Harmonized2004/22/EC - Measuring instruments
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN 50065-4-4:2023 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 4-4: Low voltage decoupling filter - Impedance filter

Relations

• Replaces: EN 50065-4-4:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-4: Low voltage decoupling filter - Impedance filter
• Effective Date: 14-May-2019
• Refers: EN 50065-2-1:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 2-1: 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 residential, commercial and light industrial environments
• Effective Date: 03-Feb-2026
• Refers: EN 50065-4-2:2001 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz and 1,6 MHz to 30 MHz - Part 4-2: Low voltage decoupling filters - Safety requirements
• Effective Date: 03-Feb-2026
• Refers: EN 50065-4-1:2001 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-1: Low voltage decoupling filters - Generic specification
• Effective Date: 03-Feb-2026
• Refers: EN 50065-4-7:2005 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz and 1,6 MHz to 30 MHz - Part 4-7: Portable low voltage decoupling filters - Safety requirements
• Effective Date: 03-Feb-2026
• Refers: EN 50065-4-3:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-3: Low voltage decoupling filter - Incoming filter
• Effective Date: 03-Feb-2026
• Refers: EN 50065-2-3:2024 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 2-3: Immunity requirements for mains communicating equipment operating in the range of frequencies 3 kHz to 95 kHz and intended for use by electricity suppliers and distributors
• Effective Date: 03-Feb-2026
• Refers: EN 50065-2-2:2003 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - 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
• Effective Date: 03-Feb-2026
• Referred By: EN 50065-4-1:2023 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-1: Low voltage decoupling filters - Generic specification
• Effective Date: 03-Feb-2026

Overview

EN 50065-4-4:2023 is a European Standard developed by CLC (CENELEC) that specifies requirements for impedance filters, also known as low voltage decoupling filters, used in mains communication systems. This standard covers the operation of these filters within the frequency range of 3 kHz to 148.5 kHz in low-voltage electrical installations. It ensures that impedance filters provide the necessary electrical characteristics to support reliable power line communication (PLC) in utility, residential, commercial, and light industrial environments.

By addressing the role of impedance filters in managing signal integrity where low impedance equipment might otherwise disrupt signalling on mains networks, the standard promotes robust, interference-free operation of power line signalling systems.

Key Topics

• Scope and Purpose:
  EN 50065-4-4:2023 applies to impedance filters designed for fixed electrical installations, including utility networks and buildings of all types. Its main objective is to set and maintain suitable impedance in power line communication systems, facilitating consistent signal transmission.

• Electrical Characteristics:

  • Operating frequency range: 3 kHz to 148.5 kHz
  • Network port: Minimum impedance modulus value of 20 Ω in the operating frequency range
  • Equipment port: No specific impedance requirement
  • Designed for installation where low impedance equipment is present

• System Compatibility:
  Impedance filters can be integrated with other types of filters such as incoming filters and segmentation filters to optimize the performance of power line networks.

• EMC and Safety Requirements:
  The standard references additional requirements from EN 50065 series documents related to immunity (EMC) and safety, ensuring compliance with essential health and safety regulations.

Applications

• Utility Networks:
  Utility providers can use impedance filters to maintain the correct operating conditions for power line communication infrastructure, especially at connection points with diverse or unpredictable loads.

• Residential and Commercial Installations:
  These filters are vital in homes, offices, and commercial buildings where low impedance devices, such as appliances and specialty equipment, may otherwise degrade PLC performance.

• Light Industrial Environments:
  Impedance filters protect communication signals in industrial facilities with varying electrical loads, supporting reliable automation, remote monitoring, and energy management.

• Integration with Other Devices:
  Used alongside incoming filters, segmentation filters, and phase couplers, impedance filters are part of a holistic strategy for maintaining optimal network conditions on low-voltage electrical installations.

Related Standards

To ensure compatibility and comprehensive coverage, EN 50065-4-4:2023 should be used in conjunction with related standards, including:

• EN 50065-1: General requirements, frequency bands, and disturbances for signalling on low-voltage networks
• EN 50065-2-1, 2-2, and 2-3: Immunity requirements for mains communications equipment in various environments (residential, commercial, and industrial)
• EN 50065-4-1: Generic specification for low voltage decoupling filters
• EN 50065-4-2: Safety requirements for low voltage decoupling filters
• EN 50065-4-3: Requirements for incoming filters
• EN 50065-4-5: Segmentation filters used in PLC systems
• EN 50065-4-7: Portable low voltage decoupling filters

Practical Value

By following EN 50065-4-4:2023, manufacturers, installers, and utility providers can ensure stable communication over low-voltage networks, increase system reliability, and reduce signal disturbances caused by low impedance equipment. Adherence to this standard facilitates interoperability, safety compliance, and optimal network performance for modern power line communication systems.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2023
Signalizacija po nizkonapetostnih električnih napeljavah v frekvenčnem območju
od 3 kHz do 148,5 kHz - 4-4. del: Nizkonapetostni ločilni filtri - Impedančni filter
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5
kHz Part 4-4: Low voltage decoupling filter - Impedance filter
Signalübertragung auf elektrischen Niederspannungsnetzen im Frequenzbereich 3 kHz
bis 148,5 kHz Teil 4-4: Niederspannungs-Entkopplungsfilter - Impedanzfilter
Transmission de signaux sur les réseaux électriques basse tension dans la bande de
fréquences de 3 kHz à 148,5 kHz - Partie 4-4: Filtres de découplage basse tension -
Filtre d'impédance
Ta slovenski standard je istoveten z: EN 50065-4-4:2023
ICS:
31.160 Električni filtri Electric filters
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50065-4-4

NORME EUROPÉENNE
EUROPÄISCHE NORM March 2023
ICS 31.160; 33.040.30; 97.120 Supersedes EN 50065-4-4:2003
English Version
Signalling on low-voltage electrical installations in the frequency
range 3 kHz to 148,5 kHz Part 4-4: Low voltage decoupling filter
- Impedance filter
Transmission de signaux sur les réseaux électriques basse Signalübertragung auf elektrischen Niederspannungsnetzen
tension dans la bande de fréquences de 3 kHz à 148,5 kHz im Frequenzbereich 3 kHz bis 148,5 kHz Teil 4-4:
- Partie 4-4: Filtres de découplage basse tension - Filtre Niederspannungs-Entkopplungsfilter - Impedanzfilter
d'impédance
This European Standard was approved by CENELEC on 2022-10-03. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50065-4-4:2023 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Impedance filter electrical characteristics. 5
4.1 General . 5
4.2 Terminations . 5
4.3 Immunity for EMC . 5
4.4 Operating frequency range . 5
4.5 Impedance . 6
4.6 Transfer function . 6
4.7 Safety . 6
European foreword
This document (EN 50065-4-4:2023) has been prepared by WG 12 “Filters” of CLC/TC 219 “Mains
communicating systems”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2023-09-24
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2026-03-24
conflicting with this document have to be
withdrawn
This document supersedes EN 50065-4-4:2003 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
EN 50065 consists of the following parts, under the general title: Signalling on low-voltage electrical
installations in the frequency range 3 kHz to 148,5 kHz:
Part 1: General requirements, frequency bands and electromagnetic disturbances
Part 2-1: 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 residential, comm
...