SIST EN IEC 61326-1:2021/A11:2026
(Amendment)Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General requirements
- Abstract
2022-12-05: 9 months tolerance applied futher to TC 65X request on 2022-12-05 (waiting for WD assessment)
- Status
- Published
- Public Enquiry End Date
- 30-Dec-2023
- Publication Date
- 12-Oct-2026
- Technical Committee
- MOV - Measuring equipment for electromagnetic quantities
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 30-Apr-2026
- Due Date
- 05-Jul-2026
- Completion Date
- 13-Oct-2026
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SIST EN IEC 61326-1:2021/A11:2026 is a Slovenian amendment to EN IEC 61326-1:2021 for electromagnetic compatibility (EMC) of electrical equipment for measurement, control and laboratory use. It updates immunity and emission requirements, performance criteria, and user-documentation rules for equipment used in professional, industrial-process, industrial-manufacturing and educational settings.
What does SIST EN IEC 61326-1:2021/A11:2026 specify?
SIST EN IEC 61326-1:2021/A11:2026 specifies changes to the general EMC requirements for this equipment family. It keeps the focus on immunity and emissions for equipment operating from a supply or battery below 1 000 V AC or 1 500 V DC, or from the circuit being measured.
The amendment is organized as modifications to the Introduction and Clauses 1, 4, 5, 6, 7 and 9, plus Annex A, replacement of Annex ZA, and a new informative Annex ZZ.
| Annex | What it covers |
|---|---|
| Annex A | Immunity test requirements for portable test and measurement equipment powered by battery or from the circuit being measured |
| Annex ZA | Normative references to international publications with corresponding European publications |
| Annex ZZ | Relationship between this European Standard and Directive 2014/30/EU |
What are the key requirements of SIST EN IEC 61326-1:2021/A11:2026?
SIST EN IEC 61326-1:2021/A11:2026 makes the EMC test plan and the user documentation part of the compliance decision. In practice, manufacturers need to define the intended EMC environment, choose the right test set-up, and state the permitted performance level or loss of performance before testing starts.
Test planning and test items
Clause 4 allows testing on one EUT or split across multiple EUTs, but every result must be traceable to the item tested. Clause 5 says the equipment shall be tested in the worst-case performance-relevant arrangement and as type tests. That matters for modular systems, because the test setup has to reflect the most demanding intended configuration, not just a convenient one.
Immunity requirements
Clause 6 uses separate immunity tables for the BASIC, INDUSTRIAL and CONTROLLED electromagnetic environments, and Annex A adds a table for portable battery-powered or circuit-powered test and measurement equipment. The tables pair each port and phenomenon with a test method and performance criterion, so the reader can match the equipment, the environment and the expected behaviour.
Clause 6 also defines what the performance criteria mean in practice:
- Criterion A - the EUT keeps operating as intended during and after the test, with no loss of function or data.
- Criterion B - temporary loss of function is allowed during the test if the EUT recovers by itself afterward.
- Criterion C - loss of function is allowed during the test if recovery is self-recoverable or restored by user action, and the recovery procedure must be in the user documentation.
These criteria matter because they tell the manufacturer what level of disturbance is acceptable for operation, measurement, control, outputs, communication, data retention and HMI.
Emission requirements
Clause 7 points radio-frequency emission limits to EN 55011 for Group 1 and Group 2 CLASS A and CLASS B EQUIPMENT. For low-frequency emissions, it directs CLASS B EQUIPMENT with input current up to 16 A to EN 61000-3-2 and EN 61000-3-3, and higher currents up to 75 A per phase to EN 61000-3-12 and EN 61000-3-11. In practice, this tells the manufacturer which emission standard to use for the product’s current rating and equipment class.
User information
Clause 9 requires the manufacturer to state the intended electromagnetic environment, the applicable immunity test requirements, and the emission standards used. If a PERFORMANCE LEVEL or permissible LOSS OF PERFORMANCE applies under immunity conditions, that must also be described in the product specification or user documentation.
What terms does SIST EN IEC 61326-1:2021/A11:2026 define?
- EMC (electromagnetic compatibility) - the subject of the standard, covering both immunity to disturbance and emissions of disturbance.
- EUT (equipment under test) - the item being tested against the EMC requirements.
- Performance criterion A - the EUT must keep operating as intended, with no loss of function or data.
- Performance criterion B - temporary loss of function is allowed during testing if the EUT recovers automatically afterward.
- Performance criterion C - loss of function is allowed during testing if recovery is automatic or user-restored, and the recovery procedure is documented.
- HMI (human-machine interface) - buttons, tactile panels, displays and audible information used by the operator.
- CONTROLLED ELECTROMAGNETIC ENVIRONMENT - the environment category used for more sheltered places such as analysis, test and service laboratories.
Who uses SIST EN IEC 61326-1:2021/A11:2026?
Manufacturers of measurement, control and laboratory equipment use this amendment to choose EMC tests, set performance criteria and write product documentation. EMC test laboratories use it to plan type tests and select the correct disturbance levels for the intended environment.
Quality managers, compliance engineers and technical buyers use it to check whether equipment is intended for BASIC, INDUSTRIAL or CONTROLLED electromagnetic environments, and whether the declared performance under disturbance matches the intended use. It is also relevant for accessories such as sample handling equipment that are used with the covered equipment.
What changed in SIST EN IEC 61326-1:2021/A11:2026 from the previous edition?
SIST EN IEC 61326-1:2021/A11:2026 modifies EN IEC 61326-1:2021. The stated technical changes are updates to the immunity requirements, the performance criterion text, and the emission requirements.
It also updates the Introduction, Scope, General requirements, EMC test plan, instructions for use, Annex A, Annex ZA, and adds Annex ZZ for the link to Directive 2014/30/EU.
Which standards are used with SIST EN IEC 61326-1:2021/A11:2026?
| Standard | What it contributes |
|---|---|
| IEC 60050-161 | EMC vocabulary |
| IEC 61000-3-2 | Harmonic current emission limits for equipment up to 16 A per phase |
| IEC 61000-3-3 | Voltage changes, voltage fluctuations and flicker for equipment up to 16 A per phase |
| IEC 61000-3-11 | Voltage changes, voltage fluctuations and flicker for equipment up to 75 A and subject to conditional connection |
| IEC 61000-3-12 | Harmonic current limits for equipment above 16 A and up to 75 A per phase |
| IEC 61000-4-2 | Electrostatic discharge immunity test |
| IEC 61000-4-3 | Radiated RF electromagnetic field immunity test |
| IEC 61000-4-4 | Electrical fast transient/burst immunity test |
| IEC 61000-4-5 | Surge immunity test |
| IEC 61000-4-6 | Conducted RF immunity test |
| IEC 61000-4-8 | Power frequency magnetic field immunity test |
| IEC 61000-4-11 | Voltage dips, short interruptions and voltage variations immunity tests |
| CISPR 11 / EN 55011 | Radio-frequency disturbance limits and measurement methods |
What does the SIST EN IEC 61326-1:2021/A11:2026 document contain?
The amendment contains replacement text for the scope, general rules, test planning, immunity criteria, emission clauses and user instructions. It also includes immunity test tables for BASIC, INDUSTRIAL and CONTROLLED environments, plus a separate table for portable equipment powered by battery or from the measured circuit.
Annex ZA gives the European publication mapping for the referenced standards, which helps users identify the correct harmonized versions. Annex ZZ connects the document to Directive 2014/30/EU, which is important for conformity assessment and for understanding how the standard is used in regulatory contexts.
Relations
- Effective Date
- 28-Apr-2026
- Effective Date
- 28-Apr-2026
- Effective Date
- 28-Apr-2026
- Effective Date
- 28-Apr-2026
- Effective Date
- 28-Apr-2026
- Effective Date
- 01-Feb-2022
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Frequently Asked Questions
SIST EN IEC 61326-1:2021/A11:2026 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General requirements". This standard covers: 2022-12-05: 9 months tolerance applied futher to TC 65X request on 2022-12-05 (waiting for WD assessment)
2022-12-05: 9 months tolerance applied futher to TC 65X request on 2022-12-05 (waiting for WD assessment)
SIST EN IEC 61326-1:2021/A11:2026 is classified under the following ICS (International Classification for Standards) categories: 17.220.20 - Measurement of electrical and magnetic quantities; 19.080 - Electrical and electronic testing; 25.040.40 - Industrial process measurement and control; 33.100.01 - Electromagnetic compatibility in general; 33.100.20 - Immunity. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 61326-1:2021/A11:2026 has the following relationships with other standards: It is inter standard links to SIST EN IEC 55011:2025, SIST EN 62952-1:2017, SIST EN IEC 61987-1:2025, SIST EN 50549-10:2023, SIST EN 61069-4:2017, SIST EN IEC 61326-1:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 61326-1:2021/A11:2026 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU; Standardization Mandates: M/552. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN IEC 61326-1:2021/A11:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2026
Električna oprema za merjenje, nadzor in laboratorijsko uporabo - Zahteve za
elektromagnetno združljivost (EMC) - 1. del: Splošne zahteve
Electrical equipment for measurement, control and laboratory use - EMC requirements -
Part 1: General requirements
Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-Anforderungen - Teil 1:
Allgemeine Anforderungen
Matériel électrique de mesure, de commande et de laboratoire - Exigences relatives à la
CEM - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN IEC 61326-1:2021/A11:2026
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61326-1:2021/A11
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2026
ICS 25.040.40; 17.220.20; 33.100.20
English Version
Electrical equipment for measurement, control and laboratory
use - EMC requirements - Part 1: General requirements
Matériel électrique de mesure, de commande et de Elektrische Mess-, Steuer-, Regel- und Laborgeräte - EMV-
laboratoire - Exigences relatives à la CEM - Partie 1: Anforderungen - Teil 1: Allgemeine Anforderungen
Exigences générales
This amendment A11 modifies the European Standard EN IEC 61326-1:2021; it was approved by CENELEC on 2026-03-16. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61326-1:2021/A11:2026 E
Contents Page
European foreword . 3
1 Modification to Introduction . 5
2 Modification to Clause 1, “Scope” . 5
3 Modification to Clause 2, “Normative references” . 5
4 Modification to Clause 4, “General” . 5
5 Modification to Clause 5, “EMC test plan” . 5
6 Modification to Clause 6, “Immunity requirements” . 5
7 Modifications to Clause 7, “Emission requirements” .13
8 Modification to Clause 9, “Instruction for use” .13
9 Modification to Annex A “Immunity test requirements for PORTABLE TEST AND MEASUREMENT
EQUIPMENT powered by battery or from the circuit being measured” .14
10 Replacement of Annex ZA, “Normative references to international publications with their
corresponding European publications” .14
Annex ZA (normative) Normative references to international publications with their
corresponding European publications .15
European foreword
This document (EN IEC 61326-1:2021/A11:2026) has been prepared by CLC/TC65X “Industrial-process
measurement, control and automation”
The following dates are fixed:
• latest date by which this document has to be (dop) 2027-04-30
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2029-04-30
conflicting with this document have to be
withdrawn
This document modifies EN IEC 61326-1:2021.
EN IEC 61326:2021/A11:2026 includes the following significant technical changes with respect to
EN IEC 61326-1:2021:
— update of immunity requirements;
— update of performance criterion;
— update of emission requirements.
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.
Any feedback and questions on this document should be directed to the users’ national committee. A complete
listing of these bodies can be found on the CENELEC website.
Introduction
The purpose of this amendment is to identify and modify the requirements in order to provide potential guidance
in fulfilling EMCD requirements.
1 Modification to Introduction
Replace the last paragraph with:
“This part of EN 61326 specifies the EMC requirements that are generally applicable to all equipment within its
scope. For certain types of equipment, these requirements will be supplemented or modified by the special
requirements of one, or more than one, particular part EN 61326-2 (all parts). EN 61326-2 (all parts) should be
read in conjunction with the EN 61326-1 requirements.
NOTE This informative statement applies to any edition of these standards.”
2 Modification to Clause 1, “Scope”
Replace the first paragraph of Clause 1 with:
“This part of EN 61326 is a product family standard specifying requirements for immunity and emissions
regarding electromagnetic compatibility (EMC) for electrical equipment, operating from a supply or battery of
less than 1 000 V AC or 1 500 V DC or from the circuit being measured. Equipment intended for professional,
industrial-process, industrial-manufacturing and educational use is covered by this part. It includes equipment
and computing devices for
— measurement and test;
— control;
— LABORATORY use;
— accessories intended for use with the above (such as sample handling equipment),
intended to be used in industrial and non-industrial locations.”
3 Modification to Clause 2, “Normative references”
Replace CISPR 11:2015 and its amendments with:
EN IEC 55011:2025, Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics
- Limits and methods of measurement
4 Modification to Clause 4, “General”
Replace the last paragraph of Clause 4 with:
“The manufacturer may select to perform all tests on either a single EUT or divide the tests among multiple
EUTs. If the latter, each test result shall be traceable to the EUT tested.”
5 Modification to Clause 5, “EMC test plan”
Replace 5.2.1 “General” with:
“Measurement, control and LABORATORY equipment often consists of systems with no fixed configuration. The
kind, number and installation of different subassemblies within the equipment may vary from system to system.
Thus, the tests shall be performed on the worst-case performance-relevant arrangement(s) covering all intended
uses and carried out as TYPE TESTS.”
6 Modification to Clause 6, “Immunity requirements”
Replace 6.2” Immunity test requirements” with:
“Table 1 gives the immunity requirements for equipment intended to be used in a BASIC ELECTROMAGNETIC
ENVIRONMENT.
Table 2 gives the immunity requirements for equipment intended to be used in an INDUSTRIAL ELECTROMAGNETIC
ENVIRONMENT.
Table 3 gives the immunity requirements for equipment intended to be used in a CONTROLLED ELECTROMAGNETIC
ENVIRONMENT.
Table A.1 gives the immunity requirements for portable test and measurement equipment that is powered by
battery or from the circuit being measured.
The performance criteria A, B, and C that are mentioned in the following tables are described in Table 4, Table 5
and Table 6.
Table 1 — Immunity test requirements for equipment
intended to be used in a BASIC ELECTROMAGNETIC ENVIRONMENT
Performance
Port Phenomenon Basic standard Test value
criterion
Enclosure ESD EN 61000-4-2:2009 ± 4 KV contact discharge B
± 8 KV air discharge B
Electromagnetic field EN 61000-4-3:2006 3 V/m (80 MHz to 1 GHz; A
+ EN 61000-4-3:2006/A1:2008 1,4 GHz to 6 GHz),
+ EN 61000-4-3:2006/A2:2010
Power frequency EN 61000-4-8:2010 3 A/m (50 Hz) A
b
magnetic field
AC power Burst EN 61000-4-4:2012 ±1 kV (5 kHz) B
(including protective
Surge EN 61000-4-5:2014 + ±0,5 kV line-to-line B
earth)
EN 61000-4-5:2014/A1:2017
±1 kV line-to-ground B
Conducted RF EN 61000-4-6:2014 3 V (150 kHz to 80 MHz) A
Voltage dip EN IEC 61000-4-11:2020 0 % during half cycle B
0 % during 1 cycle B
c
C
70 % during 25/30 cycles
c
Short interruptions EN IEC 61000-4-11:2020 C
0 % during 250/300 cycles
d, e
Burst EN 61000-4-4:2012 ±1 kV (5 kHz) B
DC power
(including protective
Surge EN 61000-4-5:2014 + ±0,5 kV line-to-line B
earth)
EN 61000-4-5:2014/A1:2017
±1 kV line-to-ground B
Conducted RF EN 61000-4-6:2014 3 V (150 kHz to 80 MHz) A
e d
EN 61000-4-4:2012 ±0,5 kV (5 kHz) B
I/O signal/control Burst
(including functional
a
EN 61000-4-5:2014 + ±1 kV line-to-ground B
Surge
earth)
EN 61000-4-5:2014/A1:2017
d
EN 61000-4-6:2014 3 V (150 kHz to 80 MHz) A
Conducted RF
e d
EN 61000-4-4:2012 ±1 kV (5 kHz) B
I/O signal/control Burst
connected directly to
a
EN 61000-4-5:2014 + ±0,5 kV line-to-line B
Surge
mains supply
EN 61000-4-5:2014/A1:2017
±1 kV line-to-ground B
d
EN 61000-4-6:2014 3 V (150 kHz to 80 MHz) A
Conducted RF
a
Only in the case of lines > 30 m (called LONG-DISTANCE LINES).
b
Only to equipment containing Reed relays or Hall effect circuits (called magnetically sensitive equipment).
c
For example, “25/30 cycles” means “25 cycles for 50 Hz test” or “30 cycles for 60 Hz test”.
d
Only in the case of lines > 3 m.
e
DC POWER PORTS intended to be connected to a low voltage DC supply (≤60 V), where secondary circuits (isolated from the
AC mains supply) are not subject to transient overvoltages (i.e. reliably-grounded, capacitively-filtered DC secondary
circuits) shall be regarded as I/O signal/control PORTS.
Table 2 — Immunity test requirements for equipment intended
to be used in an INDUSTRIAL ELECTROMAGNETIC ENVIRONMENT
Performance
Port Phenomenon Basic standard Test value
criterion
Enclosure ESD EN 61000-4-2:2009 ±4 kV contact discharge B
±8 kV air discharge B
Electromagnetic field EN 61000-4-3:2006 + 10 V/m (80 MHz to 1 GHz) A
EN 61000-4-3:2006/A1:2008
3 V/m (1,4 GHz to 6 GHz) A
+
EN 61000-4-3:2006/A2:2010
Power frequency EN 61000-4-8:2010 30 A/m (50 Hz) A
b
magnetic field
AC power Burst EN 61000-4-4:2012 ±2 kV (5 kHz) B
(including protective
Surge EN 61000-4-5:2014 + ±1 kV line-to-line B
earth)
EN 61000-4-5:2014/A1:2017
±2 kV line-to-ground B
Conducted RF EN 61000-4-6:2014 10 V (150 kHz to 80 MHz) A
Voltage dip EN IEC 61000-4-11:2020 0 % during 1 cycle B
c
C
40 % during 10/12 cycles
c C
70 % during 25/30 cycles
c
Short interruptions EN IEC 61000-4-11:2020 C
0 % during 250/300 cycles
d, e
Burst EN 61000-4-4:2012 ±2 kV (5 kHz) B
DC power
(including protective
Surge EN 61000-4-5:2014 + ±1 kV line-to-line B
earth)
EN 61000-4-5:2014/A1:2017
±2 kV line-to-ground B
Conducted RF EN 61000-4-6:2014 10 V (150 kHz to 80 MHz) A
e d
EN 61000-4-4:2012 ±1 kV (5 kHz) B
I/O signal/control Burst
(including functional
a
EN 61000-4-5:2014 + ±1 kV line-to-ground B
Surge
earth)
EN 61000-4-5:2014/A1:2017
d
EN 61000-4-6:2014 10 V (150 kHz to 80 MHz) A
Conducted RF
e d
EN 61000-4-4:2012 ±2 kV (5 kHz or 100 kHz) B
I/O signal/control Burst
(connected directly to
a
EN 61000-4-5:2014 + ±1 kV line-to-line B
Surge
mains supply)
EN 61000-4-5:2014/A1:2017
±2 kV line-to-ground B
d
EN 61000-4-6:2014 10 V (150 kHz to 80 MHz) A
Conducted RF
a
Only in the case of lines > 30 m (called LONG-DISTANCE LINES).
b
Only to equipment containing Reed relays or Hall effect circuits (called magnetically sensitive equipment).
c
For example, “25/30 cycles” means “25 cycles for 50 Hz test” or “30 cycles for 60 Hz test”.
d
Only in the case of lines > 3 m.
e
DC power PORTS intended to be connected to a low voltage DC supply (≤60 V), where secondary circuits (isolated from the
AC mains supply) are not subject to transient overvoltages (i.e. reliably-grounded, capacitively-filtered DC secondary
circuits) shall be regarded as I/O signal/control PORTS.
Table 3 — Immunity test requirements for equipment intended
to be used in a CONTROLLED ELECTROMAGNETIC ENVIRONMENT
Performance
Port Phenomenon Basic standard Test value
criterion
Enclosure ESD EN 61000-4-2:2009 ±4 kV contact discharge B
B
±8 kV air discharge
Electromagnetic field
...