SIST EN 50065-2-2:2004

• Abstract:

  This standard applies to electrical equipment using signals in the frequency range 95 kHz to; 148,5 kHz to transmit or receive information on low voltage electrical systems, in industrial; environments. In the case of equipment which includes functions other than the transmission or; reception of information on low voltage electrical supplies, this standard applies only to that part; of the equipment intended for such transmission or reception of information. Other parts of the; equipment shall comply with the immunity standard or standards relevant to the functions of those; other parts. In the event of tests being specified in those other standards of a different severity; and where the construction of the equipment is such that the functions cannot be tested; separately, the higher severity shall apply to all affected functions.; The object of this standard is to limit mutual influence between mains communication equipment; and systems (MCES) operating in different frequency bands as defined in EN 50065-1 and to; contribute to ensuring electromagnetic compatibility in general. It specifies essential immunity; requirements and test methods, including those tests which are to be performed during typetesting; of MCES on low-voltage installations, for electromagnetic interference in general and; more specific interference coming from other MCES. It therefore defines the immunity test; requirements for apparatus in relation to continuous and transient disturbances, both conducted; and radiated, and electrostatic discharges. Test requirements are specified for each port; considered.; This standard gives limits which are applicable to products operating in industrial environments.; The levels do not however cover extreme cases which may occur in any location but with a low; probability of occurrence. In special cases situations will arise where the level of disturbances; may exceed the levels specified in this standard e.g. where a hand-held transmitter is used in; proximity to an apparatus. In these instances special mitigation measures may have to be; employed.; It does not specify immunity between mains communication systems operating in the same band; (as defined in EN 50065-1) or immunity to signals originating from power line carrier systems; operating on high or medium voltage networks.

• Status: Published
• Publication Date: 29-Feb-2004
• ICS: 33.040.30 - Switching and signalling systems
• ICS: 33.100.20 - Immunity
• Technical Committee: KIN - Mains communicating systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Mar-2004
• Due Date: 01-Mar-2004
• Completion Date: 01-Mar-2004
• Directive: 2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
  OJ Ref: C 53/04 OJ Date: 25-Feb-2014
• Directive:

  ---

  2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive:

  ---

  2014/30/EU - 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)
  OJ Ref: C 173 OJ Date: 13-May-2016
• Directive:

  ---

  89/336/EEC - Electromagnetic compatibility (EMC)
• Mandate: BC/CLC/92-02 - BC/CLC/92-02
• Mandate: M/404 - Standardisation Mandate to CEN, CENELEC and ETSI for harmonized standard according to the Electro Magnetic Compatibility (EMC) Directive 2004/108/EC
• Ref Project: 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

• Referred By: SIST EN 14908-3:2007 - Open Data Communication in Building Automation, Controls and Building Management - Control Network Protocol - Part 3: Power Line Channel Specification
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 14908-3:2014 - Open Data Communication in Building Automation, Controls and Building Management - Control Network Protocol - Part 3: Power Line Channel Specification
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 50065-4-6:2023 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 4-6: Low voltage decoupling filters - Phase coupler
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 50065-4-3:2023 - 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
• Referred By: 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
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 50065-4-5:2023 - Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz Part 4-5: Low voltage decoupling filter - Segmentation filter
• Effective Date: 03-Feb-2026
• Amended By: SIST EN 50065-2-2:2004/A1:2006 - 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: 21-Sep-2010

SIST EN 50065-2-2:2004 is the Slovenian adoption of European Standard EN 50065-2-2 for mains communications equipment and systems (MCES) that use the 95 kHz to 148.5 kHz range on low-voltage electrical installations in industrial environments. It specifies immunity requirements and test methods so manufacturers, test labs, and users can check whether this equipment keeps working when exposed to conducted, radiated, and electrostatic disturbances.

The standard is aimed at MCES used on industrial power networks and at equipment that must coexist with other signal systems on low-voltage installations. In practice, it tells you what to test, on which port, and under which performance criterion the equipment is allowed to keep operating, recover automatically, or need manual reset.

What does SIST EN 50065-2-2:2004 specify?

SIST EN 50065-2-2:2004 specifies immunity requirements for MCES that transmit or receive information in the 95 kHz to 148.5 kHz band in industrial environments. It also organizes the tests by port, so the user can apply the right disturbance test to enclosure, signal/control, process, measurement, and power ports.

The scope applies only to the communication part of mixed-function equipment. Other functions have to meet the immunity standards that apply to them, and if separate testing is not possible, the more severe test requirement applies to the affected functions.

The document is organized into these main clauses and one normative annex:

Part	What it covers
Clause 1	Scope and exclusions
Clause 2	Normative references
Clause 3	Definitions
Clause 4	Industrial locations and their characteristics
Clause 5	Performance criteria
Clause 6	Test conditions
Clause 7	Port-by-port immunity specifications
Annex A	Normative test circuit and method

What are the key requirements of SIST EN 50065-2-2:2004?

The standard sets the performance criteria first, because they determine what counts as acceptable behavior during testing. Criterion A means the MCES keeps working within its specified limits, Criterion B allows temporary loss or degradation if the equipment recovers automatically, and Criterion C allows temporary loss or degradation if manual intervention or reset is needed. This matters because the tester must judge not only whether the unit survives a disturbance, but also how it recovers.

Testing has to reflect realistic worst-case operation

Clause 6 requires testing in the most susceptible operating mode consistent with normal use, with the configuration adjusted to maximize susceptibility. The test sample has to be set up with the minimum auxiliary equipment needed to exercise the ports, and the operating mode and configuration have to be recorded in the test report. In practice, this prevents a favorable setup from hiding problems.

Immunity is specified port by port

Clause 7 applies the immunity tests only to relevant, accessible ports, and the tests are carried out as single tests in sequence. If a particular test is not appropriate for a product, that decision has to be recorded. For a buyer or reviewer, this means the report should show exactly which ports were tested and why.

The tables define the disturbance types and acceptance criteria

Tables 1 to 4 cover enclosure ports, signal and control lines, process/measurement/control lines, d.c. power ports, and a.c. power ports. The disturbances include radio-frequency fields, conducted RF, surges, fast transients, power-frequency magnetic fields, electrostatic discharge, voltage dips, and interruptions. The practical point is that the equipment has to be checked against the kinds of interference that are common on industrial installations.

Narrow-band conducted interference gets special treatment

Clause 7.2.2 adds a narrow-band conducted interference test for signals from other MCES or out-of-band disturbances above 148.5 kHz. Table 5 gives the frequency regions, signal levels, and performance criteria for the a.c. input power ports. This is important because the standard is not only about generic EMC stress - it also checks whether one mains communication system disturbs another.

Annex A defines the test circuit and how to observe results

Annex A provides the normative test circuit for criteria A and B and explains how to use it for communication testing. It also says when to test in receive mode only, how to treat acknowledgement-based operation, and how to check externally observable data before and after testing. That matters because the result must reflect actual communication performance, not just the absence of hardware damage.

What terms does SIST EN 50065-2-2:2004 define?

• Mains communications equipment and systems (MCES) - Equipment and systems that use low-voltage mains wiring to transmit or receive information.
• Immunity - The ability of MCES to perform within specified limits when an electromagnetic disturbance is present.
• Immunity level - The maximum disturbance level at which the equipment still performs at the specified degree.
• Port - The interface between the accessory and the external electromagnetic environment.
• Cable port - The point where a conductor or cable connects to the accessory, such as a signal or power connection.
• Enclosure port - The physical boundary through which electromagnetic fields can radiate into or out of the equipment.
• Public mains network - The electricity lines available to all consumer categories and operated by a supply or distribution undertaking.
• Severity level - The value of the electromagnetic quantity used for an immunity test.

Who uses SIST EN 50065-2-2:2004?

SIST EN 50065-2-2:2004 is used by manufacturers of MCES, EMC test laboratories, and design engineers who need to verify immunity before type testing or product release. Quality managers and approval teams use it to check test reports and ensure the correct ports and performance criteria were applied.

It is also relevant to industrial automation suppliers and buyers who need mains communication equipment that can operate near heavy loads, switching equipment, ISM apparatus, and other industrial sources of interference. In practice, it helps define what a product must tolerate in a factory or similar installation.

Which standards are used with SIST EN 50065-2-2:2004?

• EN 50065-1 - Defines the frequency bands and electromagnetic disturbances for signalling on low-voltage installations.
• EN 50082-2 - Provides the generic immunity baseline for the industrial environment.
• EN 55022 - Supports test setup for auxiliary apparatus and port exercise.
• EN 61000-3-2 - Gives limits for harmonic current emissions.
• EN 61000-4-2 - Defines electrostatic discharge immunity testing.
• EN 61000-4-3 - Defines radiated radio-frequency field immunity testing.
• EN 61000-4-4 - Defines fast transient/burst immunity testing.
• EN 61000-4-5 - Defines surge immunity testing.
• EN 61000-4-6 - Defines conducted RF immunity testing.
• EN 61000-4-8 - Defines power-frequency magnetic field immunity testing.
• EN 61000-4-11 - Defines voltage dip and interruption immunity testing.
• CISPR 16-1 - Provides measuring apparatus and methods used in the test setup.
• IEC 60050-161 - Supplies the EMC vocabulary used for the definitions.
• EN 50065-2-1 and EN 50065-2-3 - Companion parts covering similar equipment in other frequency ranges and environments.

What does the SIST EN 50065-2-2:2004 document contain?

The document contains port-by-port immunity tables, a narrow-band conducted interference procedure, and a normative annex with the test circuit. It also includes figures showing example ports and the coupling arrangement used for the conducted interference test.

For testing and certification, the most useful parts are the performance criteria, the port-specific test conditions, and Annex A’s method for observing communication behavior during disturbance. The report also has to record the chosen operating mode, configuration, and any justified omission of a test.

SLOVENSKI SIST EN 50065-2-2:2004

STANDARD
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95 kHz do 148,5 kHz in so namenjeni za uporabo v industrijskih okoljih
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
ICS 5HIHUHQþQDãWHYLOND
33.040.30; 33.100.20
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EUROPEAN STANDARD EN 50065-2-2
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2003

ICS 33.040.30
English version
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

Transmission de signaux sur les réseaux Signalübertragung auf elektrischen
électriques basse tension dans la bande Niederspannungsnetzen im
de fréquences de 3 kHz à 148,5 kHz Frequenzbereich 3 kHz bis 148,5 kHz
Partie 2-1: Exigences d'immunité Teil 2-2: Störfestigkeitsanforderungen
pour les appareils et les systèmes an Netz-Datenübertragungsgeräte und
de communication sur le réseau -systeme die im Frequenzbereich 95 kHz
électrique dans la bande de fréquences bis 148,5 kHz betrieben werden
de 95 kHz à 148,5 kHz et destinés à être und für den Gebrauch im Industriebereich
utilisés dans un environnement industriel bestimmt sind

This European Standard was approved by CENELEC on 2001-12-04. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50065-2-2:2003 E
Foreword
This European Standard was prepared by SC 205A, Mains communicating systems, of Technical
Committee CENELEC TC 205, Home and Building Electronic Systems (HBES).

The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as EN 50065-2-2 on 2001-12-04.

The following dates were fixed:

- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-08-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-08-01
This part of this standard defines limits and test methods for the immunity of mains
communication equipment and systems (MCES) operating in the range of frequencies from
95 kHz to 148,5 kHz and intended for use in industrial environments. Immunity requirements for
similar equipment intended for operation in residential, commercial and light industrial
environments are given in Part 2-1 of this standard. Immunity requirements and tests applicable
to Electricity Suppliers’ equipment and systems operating in the band 3 kHz to 95 kHz are given
in Part 2-3 of this standard.
These tests and limits represent essential electromagnetic compatibility and immunity
requirements for the environment according to the scope. They may accordingly be applied to
MCES according to the Scope of Part 2-3 if lower immunity requirements are sufficient for the
considered MCES. Not all known disturbances have been included for testing purposes which
have been limited to those disturbances known to be critical for the operation of such equipment
including specific MCES disturbances such as conducted narrow band.
The immunity requirements have been selected to ensure an adequate level of immunity for
MCES in industrial environments. The levels do not however cover extreme cases which may
occur in any location but with an extremely low probability of occurrence.
NOTE  This standard closely follows EN 50082-2, the generic immunity standard for the industrial environment, from
which much of the material is taken. However the nature of MCES is such that the performance criteria given in
clause 5 of this standard differ from those given in EN 50082-2, particularly regarding the recovery of equipment
following a disturbance. For clarity and completeness all the affected sections of EN 50082-2 are therefore repeated in
this part.
Annexes designated "normative" are part of the body of the standard.
In this standard, annex A is normative.
__________
– 3 – EN 50065-2-2:2003
Contents
Page
1 Scope.4
2 Normative references.4
3 Definitions. 5
4 Description of locations .6
5 Performance criteria.7
6 Conditions during testing.7
7 Immunity specifications.7
7.1 Applicability of immunity test requirements . 7
7.2 Test specifications.8
7.2.1 Immunity requirements.8
7.2.2 Narrow-band conducted interference.13

Annex A (normative) Test circuit .15
A.1 Test circuit specification.15
A.2 Method of testing .16

Figure 1 – Examples of ports . 6
Figure 2 – Signal source and coupling network for narrow-band conducted interference test .13
Figure A.1 - Test circuit.15

Table 1 – Immunity: Enclosure port.9
Table 2a – Immunity: Ports for signal and control lines .10
Table 2b – Immunity: Ports for process, measurement and control lines, long bus
and control lines .10
Table 3 – Immunity: d.c. input and d.c. output power ports.11
Table 4 – Immunity: a.c. input and a.c. output power ports.12
Table 5 – Input a.c. power ports.14

1 Scope
This standard applies to electrical equipment using signals in the frequency range 95 kHz to
148,5 kHz to transmit or receive information on low voltage electrical systems, in industrial
environments. In the case of equipment which includes functions other than the transmission or
reception of information on low voltage electrical supplies, this standard applies only to that part
of the equipment intended for such transmission or reception of information. Other parts of the
equipment shall comply with the immunity standard or standards relevant to the functions of those
other parts. In the event of tests being specified in those other standards of a different severity
and where the construction of the equipment is such that the functions cannot be tested
separately, the higher severity shall apply to all affected functions.
The object of this standard is to limit mutual influence between mains communication equipment
and systems (MCES) operating in different frequency bands as defined in EN 50065-1 and to
contribute to ensuring electromagnetic compatibility in general. It specifies essential immunity
requirements and test methods, including those tests which are to be performed during type-
testing of MCES on low-voltage installations, for electromagnetic interference in general and
more specific interference coming from other MCES. It therefore defines the immunity test
requirements for apparatus in relation to continuous and transient disturbances, both conducted
and radiated, and electrostatic discharges. Test requirements are specified for each port
considered.
This standard gives limits which are applicable to products operating in industrial environments.
The levels do not however cover extreme cases which may occur in any location but with a low
probability of occurrence. In special cases situations will arise where the level of disturbances
may exceed the levels specified in this standard e.g. where a hand-held transmitter is used in
proximity to an apparatus. In these instances special mitigation measures may have to be
employed.
It does not specify immunity between mains communication systems operating in the same band
(as defined in EN 50065-1) or immunity to signals originating from power line carrier systems
operating on high or medium voltage networks.
Safety considerations are not included in this standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
EN 50065-1 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
EN 50082-2 Electromagnetic compatibility – Generic immunity standard –
Part 2: Industrial environment
EN 55022 1998 Information technology equipment – Radio disturbance
characteristics - Limits and methods of measurement
(CISPR 22:1997, mod)
– 5 – EN 50065-2-2:2003
EN 61000-3-2  Electromagnetic compatibility (EMC) – Part 3-2: Limits - Limits for
harmonic current emissions (equipment input current up to and
including 16 A per phase) (IEC 61000-3-2)
EN 61000-4-2 Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
(IEC 61000-4-2)
EN 61000-4-3 Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency,
electromagnetic field immunity test (IEC 61000-4-3, mod)
EN 61000-4-4 Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity
test (IEC 61000-4-4)
EN 61000-4-5 Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test (IEC 61000-4-5)
EN 61000-4-6 Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances,
induced by radio-frequency fields (IEC 61000-4-6)
EN 61000-4-8 Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity
test (IEC 61000-4-8)
EN 61000-4-11 Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and
voltage variations immunity tests (IEC 61000-4-11)
CISPR 16-1 1999 Specification for radio disturbance and immunity measuring
apparatus methods – Part 1: Radio disturbance and measuring
apparatus
IEC 60050-161  International Electrotechnical Vocabulary –
Chapter 161: Electromagnetic compatibility
3 Definitions
For the purpose of this standard, the following definitions together with those in IEC 60050-161
apply.
3.1
electromagnetic interference
see definition given in IEC 60050-161
3.2
immunity
ability of MCES to perform within specified limits in the presence of an electromagnetic
disturbance
NOTE 1 Influences between MCES operating in the same frequency band (see EN 50065-1) are not taken into
account.
NOTE 2 See IEC 60050-161 for a more general definition.

3.3
immunity level
maximum level of a given electromagnetic disturbance incident on the equipment for which it
remains capable of operating at a specified degree of performance
(Definition given in IEC 60050-161)
3.4
port
particular interface of the specified accessory with the external electromagnetic environment (see
Figure 1)
3.5
cable port
point at which a conductor or a cable is connected to the accessory. Examples are signal, control
and power ports
3.6
enclosure port
physical boundary of the accessory through which electromagnetic fields may radiate or impinge
3.7
public mains network
electricity lines to which all categories of consumers have access and which are operated by a
supply or distribution undertaking for the purpose of supplying electrical energy
3.8
severity level
value of an influencing electromagnetic quantity specified for an immunity test
Enclosure port
AC power port Signal/control port
APPARATUS
DC power port Earth port
Figure 1 – Examples of ports
4 Description of locations
The environments encompassed by this standard are industrial locations, both indoor and
outdoor. Apparatus covered by this standard is intended to be connected to a power network
supplied from a high or medium-voltage transformer dedicated to the supply of an installation
feeding manufacturing or similar plant. This standard applies to apparatus intended to operate in
industrial locations or in proximity to industrial power installations.
Industrial locations are characterised by the existence of one or more of the following conditions:
• industrial, scientific and medical (ISM) apparatus;
• heavy inductive or capacitive loads, which are frequently switched;
• currents and associated magnetic fields are high.
These are major contributors to the industrial electromagnetic environment and as such
distinguish the industrial environment.

– 7 – EN 50065-2-2:2003
5 Performance criteria
For the purposes of the tables the performance criteria are:
A : the MCES continues to operate as intended (e.g. transmission, reception) within the
performance limits specified by the manufacturer. No change of actual operating state or
stored data is allowed;
B : a temporary degradation or loss of function or performance is permitted during the
disturbance provided the eq
...