EN IEC 61010-2-051:2021/A11:2021

SLOVENSKI STANDARD
01-december-2021
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko
uporabo - 2-051. del: Posebne zahteve za laboratorijsko opremo za mešanje in
premešavanje
Safety requirements for electrical equipment for measurement, control and laboratory
use - Part 2-051: Particular requirements for laboratory equipment for mixing and stirring
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2
-051: Besondere Anforderungen an Laborgeräte zum Mischen und Rühren
Exigences de sécurité pour appareils électriques de mesurage, de régulation et de
laboratoire - Partie 2-051 : Exigences particulières pour appareils de laboratoire utilisés
pour mélanger et agiter
Ta slovenski standard je istoveten z: EN IEC 61010-2-051:2021/A11:2021
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61010-2-
051:2021/A11
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2021
ICS 19.080; 71.040.20
English Version
Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 2-051: Particular requirements
for laboratory equipment for mixing and stirring
Exigences de sécurité pour appareils électriques de Sicherheitsbestimmungen für elektrische Mess-, Steuer-,
mesurage, de régulation et de laboratoire - Partie 2-051 : Regel- und Laborgeräte - Teil 2-051: Besondere
Exigences particulières pour appareils de laboratoire Anforderungen an Laborgeräte zum Mischen und Rühren
utilisés pour mélanger et agiter
This amendment A11 modifies the European Standard EN IEC 61010-2-051:2021; it was approved by CENELEC on 2021-08-02.
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,
Turkey 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61010-2-051:2021/A11:2021 E

European foreword
This document (EN IEC 61010-2-051:2021/A11:2021) has been prepared by CLC/TC 66X “Safety of
measuring, control, and laboratory equipment”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022-08-02
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024-08-02
conflicting with this document have to be
withdrawn
This document amends EN IEC 61010-2-051:2021.
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.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association, and supports essential requirements
of EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an integral part
of this document.
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.
1 Additions to Clause 2, “Normative references”
Add the following normative references to Clause 2:
“
EN IEC 60079-0:2018, Explosive atmospheres - Part 0: Equipment - General requirements (IEC 60079-
0:2017)
EN 60079-1:2014, Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
(IEC 60079-1:2014)
EN 60079-2:2014, Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure "p"
(IEC 60079-2:2014)
EN 60079-5:2015, Explosive atmospheres - Part 5: Equipment protection by powder filling "q"
(IEC 60079-5:2015)
EN 60079-7:2015 , Explosive atmospheres - Part 7: Equipment protection by increased safety “e”
(IEC 60079-7:2015)
EN 60079-11:2012, Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
(IEC 60079-11:2011)
EN IEC 60079-15:2019, Explosive atmospheres - Part 15: Equipment protection by type of protection
"n" (IEC 60079-15:2017)
EN 60079-18:2015, Explosive atmospheres - Part 18: Equipment protection by encapsulation “m”
(IEC 60079-18:2014)
IEC 62061, Safety of machinery — Functional safety of safety-related electrical, electronic and
programmable electronic control systems
ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General
principles for design
ISO 13849-2, Safety of machinery — Safety-related parts of control systems — Part 2: Validation
“
2 Modification to 7.3.101, “Speed controls”
Replace the second paragraph with:
“Conformity is checked by inspection and the following test:
The speed control is overridden to achieve the maximum speed the moving parts can achieve. The
equipment shall be observed for a duration as specified in 4.4.3 or until the power to the moving parts
is interrupted permanently. The conformity criteria of 4.4.4.1 to 4.4.4.3 shall be observed and the
requirements of 7.3.1 and 7.7 shall be met during the test.”

As impacted by EN 60079-7:2015/A1:2018.
As impacted by EN 60079-18:2015/A1:2017.
3 Modification to 7.3.104, “HAZARDS related to application”
Replace Example b) with the following:
"
b) Where a HAZARD could be caused by excessive torque applied to high-viscosity material, for
example through glass breakage, the safety device shall initiate an alarm signal if the torque rises
above a preset level.”
4 Modification to 7.7, “Expelled parts”
Add the following new paragraph before the note:
“Expelled parts include sample materials and fluids being mixed or stirred.”
5 Modification to 13.2.101, “Protection against explosion and explosives”
In the third line, replace “such as IEC 60079 series” by “including EN 60079 series”.
6 Modification to 15.1, “General”
Add to the conformity statement the following new paragraphs:
“If IEC 62061 or ISO 13849-1 is used to determine the requiremen
...