Bulgarian Institute for Standardization
Standards – always a step ahead
Phone: +359 2 8174 523, +359 2 8174 504
E-mail: info@bds-bg.org
1797 Sofia, 13 "Lachezar Stanchev" Str., "Izgrev" Complex
ID number: 175079183, VAT number: BG175079183
Main menu

prБДС EN 50065-2-3:2021

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

General information

45.99     Jun 21, 2021

50.20    Aug 13, 2021



European Standard

33.040.30     33.100.01  


This document applies to electrical equipment using signals in the frequency range 3 kHz to 95 kHz to transmit or receive information on low voltage electrical systems, for electricity suppliers and distributors. In the case of equipment which includes functions other than the transmission or reception of information on LV distribution networks or installations of network users connected to the public electricity distribution network, this document applies only to that part of the equipment intended for such transmission or reception of information. Other parts of the equipment are expected to comply with the immunity standard or standards relevant to the functions of those other parts.
The object of this document is to contribute to ensuring EMC in general. It specifies essential immunity requirements and test methods, including those tests which are to be performed during type-testing of MCE, for electromagnetic interference (EMI) generated on LV installations.
It defines the methods and requirements for testing immunity concerning the basic function of an MCE, in relation to continuous and transient disturbances, both conducted and radiated, and electrostatic discharges. Test requirements are specified for each port considered.
Furthermore it provides guidelines for the assessment of the performance of the communication function of an MCE. Normative specifications are under consideration.
This document gives limits which are applicable to MCE used by electricity suppliers and distributors (e.g. DSOs) for purposes like energy management and network monitoring and automation. The levels do not however cover extreme cases which could occur in any location but with a low probability of occurrence. In special cases situations will arise where the level of disturbances could exceed the levels specified in this document, e.g. where a hand-held transmitter is used in proximity of an apparatus. In these instances special mitigation measures might have to be employed.
It does not specify immunity between MCE operating in the same nominal frequency band or immunity to signals originating from power line carrier systems operating on high or medium-voltage networks.
Safety considerations are not included in this document.

Directives and Regulations

When the standard is harmonized under a directive or regulation, the word Harmonized appear. When such an inscription does not appear, it means that the standard is related to / supporting the relevant directive or regulation.


Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)

Life cycle


prБДС EN 50065-2-3:2021
45.99 Dispatch of FV draft to CCMC
Jun 21, 2021

Related project

Adopted from FprEN 50065-2-3