Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-011: Particular requirements for refrigerating equipment (IEC 61010-2-011:2019)

This Part 2 of IEC 61010 specifies particular safety requirements for the following types
a) to c) of electrical equipment and their accessories, wherever they are intended to be used,
whenever that equipment incorporates REFRIGERATING SYSTEMS as an integral part of, or
separate from, the equipment and the equipment is in direct control of the REFRIGERATING
SYSTEM.
This document details all the requirements when up to 150 g of FLAMMABLE REFRIGERANT are
used per stage of a REFRIGERATING SYSTEM. Additional requirements beyond the current scope
of this document apply if a REFRIGERANT charge of FLAMMABLE REFRIGERANT exceeds this
amount.

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-011: Besondere Anforderungen für Kühlgeräte (IEC 61010-2-011:2019)

Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-011: Exigences particulières pour appareils de réfrigération for (IEC 61010-2-011:2019)

IEC 61010-2-011:2019 est disponible sous forme de IEC 61010-2-011:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente. L'IEC 61010-2-011:2019 spécifie les exigences de sécurité particulières pour les types a) à c) suivants d'appareils électriques et leurs accessoires, quel que soit l'endroit dans lequel ils sont destinés à être utilisés, lorsque ces appareils comportent des systèmes frigorifiques, que ces derniers fassent partie intégrante des appareils ou qu'ils soient séparés des appareils, et que les appareils sont sous la commande directe du système frigorifique. Le présent document décrit de manière détaillée toutes les exigences correspondant à l'utilisation d'une quantité de fluide frigorigène inflammable allant jusqu'à 150 g par étage d'un système frigorifique. Lorsqu'une charge de fluide frigorigène inflammable dépasse cette quantité, des exigences supplémentaires hors du domaine d'application du présent document s'appliquent. a) Appareils électriques d'essai et de mesurage Il s'agit d'appareils qui, par des moyens d'ordre électromagnétique, mesurent, indiquent ou enregistrent une ou plusieurs grandeurs électriques ou physiques, ainsi que des appareils non-mesureurs tels que générateurs de signaux, étalons de mesure, alimentations de puissance de laboratoire, transducteurs, transmetteurs, etc. b) Appareils électriques de contrôle de procédés industriels Il s'agit d'appareils qui règlent une ou plusieurs grandeurs de sortie selon des valeurs spécifiques, chaque valeur étant déterminée par réglage manuel, par programmation locale ou à distance, ou par une ou plusieurs variables d'entrée. c) Appareils électriques de laboratoire Il s'agit d'appareils qui mesurent, indiquent, surveillent, inspectent ou analysent des matériaux, ou qui servent à préparer des matériaux, y compris les appareils de diagnostic in vitro (DIV). Cette deuxième édition annule et remplace la première édition parue en 2016. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) alignement sur les modifications apportées par l'Amendement 1 de l'IEC 61010-1:2010; b) introduction de nouveaux termes et définitions ou modification de termes pour s'aligner sur la Partie 2-012 et d'autres documents de base. Modifications rédactionnelles permettant d'utiliser les petites majuscules uniquement pour les termes définis. Noter la différence entre "(3.107) utilisé en 4.3.2.101 et "fonctionnement anormal" en 11.7.104.3 et 11.7.104.5; c) clarifications relatives aux essais de refroidissement en 4.4.2.10; d) modifications relatives à l'emploi précis des termes suivants: "température d'application", "", "température du local" et "température ambiante"; e) utilisation du terme défini "pour remplacer "système de refroidissement"; f) déplacement du texte de 4.4.2.101 à 4.3.2.101, en ce sens que le tel que défini consiste à simuler une défaillance des conditions ambiantes au 1.4.1, mais pas une de l'appareil; g) utilisation du terme "appareil" ("equipment" en anglais) pour remplacer le terme "unité", le cas échéant; h) les de 5.1.2 dd) des côtés haute et basse pression pour chaque étage du sont e

Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-011. del: Posebne zahteve za hladilno opremo (IEC 61010-2-011:2019)

Ta 2. del standarda IEC 61010 določa posebne varnostne zahteve za naslednje vrste od a) do c) električne opreme in pribora, kadar sta namenjena uporabi, kadar oprema zajema HLADILNE SISTEME kot sestavni del ali ločeno od opreme in kadar oprema neposredno nadzoruje HLADILNI SISTEM. Ta dokument podrobno opisuje vse zahteve, ko se v eni fazi HLADILNEGA SISTEMA uporablja do 150 g VNETLJIVEGA HLADILNEGA SREDSTVA. Dodatne zahteve, ki so zunaj področja uporabe tega dokumenta, se uporabljajo, če polnjenje VNETLJIVEGA HLADILNEGA SREDSTVA preseže to količino.

General Information

Status
Published
Publication Date
01-Feb-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
26-Nov-2021
Due Date
31-Jan-2022
Completion Date
02-Feb-2022

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SLOVENSKI STANDARD
SIST EN IEC 61010-2-011:2022
01-marec-2022
Nadomešča:
SIST EN 61010-2-011:2017
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko
uporabo - 2-011. del: Posebne zahteve za hladilno opremo (IEC 61010-2-011:2019)

Safety requirements for electrical equipment for measurement, control, and laboratory

use - Part 2-011: Particular requirements for refrigerating equipment (IEC 61010-2-

011:2019)

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2

-011: Besondere Anforderungen für Kühlgeräte (IEC 61010-2-011:2019)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de

laboratoire - Partie 2-011: Exigences particulières pour appareils de réfrigération for

(IEC 61010-2-011:2019)
Ta slovenski standard je istoveten z: EN IEC 61010-2-011:2021
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
27.200 Hladilna tehnologija Refrigerating technology
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
SIST EN IEC 61010-2-011:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61010-2-011:2022
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SIST EN IEC 61010-2-011:2022
EUROPEAN STANDARD EN IEC 61010-2-011
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 19.080 Supersedes EN 61010-2-011:2017 and all of its
amendments and corrigenda (if any)
English Version
Safety requirements for electrical equipment for measurement,
control, and laboratory use - Part 2-011: Particular requirements
for refrigerating equipment
(IEC 61010-2-011:2019)

Exigences de sécurité pour appareils électriques de Sicherheitsbestimmungen für elektrische Mess-, Steuer-,

mesurage, de régulation et de laboratoire - Partie 2-011: Regel- und Laborgeräte - Teil 2-011: Besondere

Exigences particulières pour appareils de réfrigération Anforderungen für Kühlgeräte

(IEC 61010-2-011:2019) (IEC 61010-2-011:2019)

This European Standard was approved by CENELEC on 2019-04-26. 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,

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 61010-2-011:2021 E
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SIST EN IEC 61010-2-011:2022
EN IEC 61010-2-011:2021 (E)
European foreword

The text of document 66/676/CDV, future edition 2 of IEC 61010-2-011, prepared by IEC/TC 66

"Safety of measuring, control and laboratory equipment" was submitted to the IEC-CENELEC parallel

vote and approved by CENELEC as EN IEC 61010-2-011:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022-05-19

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-11-19

document have to be withdrawn

This document supersedes EN 61010-2-011:2017 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.

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 the relationship with EU Directive(s) / Regulation(s), see informative Annex ZZ, which is an

integral part of EN IEC 61010-2-011:2021/A11:2021.

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.
Endorsement notice

The text of the International Standard IEC 61010-2-011:2019 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60079-20-1 NOTE Harmonized as EN 60079-20-1
IEC 60204-1 NOTE Harmonized as EN 60204-1
IEC 61010-2-020 NOTE Harmonized as EN 61010-2-020
ISO 4126-1 NOTE Harmonized as EN ISO 4126-1
ISO 4126-2 NOTE Harmonized as EN ISO 4126-2
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SIST EN IEC 61010-2-011:2022
IEC 61010-2-011
Edition 2.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
Exigences de sécurité pour appareils électriques de mesurage, de régulation et
de laboratoire –
Partie 2-011: Exigences particulières pour APPAREILS DE REFRIGERATION
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080 ISBN 978-2-8322-6658-8

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 5 ----------------------
SIST EN IEC 61010-2-011:2022
– 2 – IEC 61010-2-011:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope and object ........................................................................................................... 10

2 Normative references .................................................................................................... 11

3 Terms and definitions .................................................................................................... 11

4 Tests ............................................................................................................................. 13

5 Marking and documentation ........................................................................................... 16

6 Protection against electric shock ................................................................................... 19

7 Protection against mechanical HAZARDS ......................................................................... 19

8 Resistance to mechanical stresses ................................................................................ 19

9 Protection against the spread of fire .............................................................................. 19

10 Equipment temperature limits and resistance to heat ..................................................... 20

11 Protection against HAZARDS from fluids and solid foreign objects ................................... 21

12 Protection against radiation, including laser sources, and against sonic and

ultrasonic pressure ........................................................................................................ 32

13 Protection against liberated gases and substances, explosion and implosion ................ 32

14 Components and subassemblies ................................................................................... 32

15 Protection by interlocks ................................................................................................. 33

16 HAZARDS resulting from application ................................................................................ 33

17 RISK assessment ........................................................................................................... 33

Annexes ............................................................................................................................... 34

Annex G (informative) Leakage and rupture from fluids under pressure .............................. 35

Annex L (informative) Index of defined terms ...................................................................... 36

Annex AA (normative) Non-sparking "n" electrical device .................................................... 37

Annex BB (informative) HAZARDS associated with REFRIGERATING SYSTEMS and

REFRIGERANTS ....................................................................................................................... 38

Annex CC (informative) Safety requirements for components and piping ............................ 40

Annex DD (informative) Equipment containing FLAMMABLE REFRIGERANTS – Information

and marking requirements..................................................................................................... 45

Bibliography .......................................................................................................................... 49

Figure 101 – Schema of a REFRIGERATING SYSTEM incorporating a condenser .......................... 8

Figure 102 – Flow chart illustrating the selection process ....................................................... 9

Figure 103 – Scratching TOOL tip details ............................................................................... 27

Table 1 – Symbols ................................................................................................................ 17

Table 101 – Maximum temperatures for MOTOR-COMPRESSORS .............................................. 20

Table 102 – Minimum temperature for determination of saturated vapor pressure of

REFRIGERANT ......................................................................................................................... 22

Table 103 – REFRIGERANT flammability parameters ............................................................... 31

Table CC.1 – Parameters of pressure vessels according to EN 14276-1 ............................... 40

Table CC.2 – Parameters of pipping according to EN 14276-2 .............................................. 42

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SIST EN IEC 61010-2-011:2022
IEC 61010-2-011:2019 © IEC 2019 – 3 –

Table CC.3 – Component and piping requirements ............................................................... 43

Table CC.4 – Minimum wall thickness for copper and steel tubing ........................................ 44

Table DD.1 – Quantity of Group A2/A3 REFRIGERANT per occupied space .............................. 48

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SIST EN IEC 61010-2-011:2022
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC

Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61010-2-011 has been prepared by IEC technical committee 66:

Safety of measuring, control and laboratory equipment.

It has the status of a group safety publication in accordance with IEC Guide 104.

This second edition cancels and replaces the first edition published in 2016. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) alignment with changes introduced by Amendment 1 of IEC 61010-1:2010;

b) introduction of new defined terms or modified terms to align with Part 2-012 and other

source documents. Editorial changes to use small capitals only for defined terms. Note the

difference of defined term ABNORMAL OPERATION (3.107) in 4.3.2.101 and abnormal
operation in 11.7.104.3 and 11.7.104.5;
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SIST EN IEC 61010-2-011:2022
IEC 61010-2-011:2019 © IEC 2019 – 5 –
c) clarifications for cooling tests in 4.4.2.10;

d) changes pertaining to the accurate employment of the following terms: temperature,

operating temperature, application temperature, CONTROLLED TEMPERATURE, room ambient

and ambient temperature;
e) use of defined term REFRIGERATING SYSTEM to replace cooling system;
ABNORMAL OPERATION, as defined,
f) move text of 4.4.2.101 to 4.3.2.101, since the purpose of

is to simulate failure of the ambient conditions of 1.4.1 but not of the SINGLE FAULT

CONDITION of the equipment;

g) use of the term equipment to replace unit, apparatus, appliance, where applicable;

h) in 5.1.2 dd) PS for high and low sides for each REFRIGERANT stage are required only under

NORMAL CONDITION;
NORMAL CONDITION to replace normal operation;
i) use of defined term
j) use of defined term OPERATOR to replace user.
The text of this International Standard is based on the following documents:
CDV Report on voting
66/676/CDV 66/683/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of the IEC 61010 series, published under the general title Safety

requirements for electrical equipment for measurement, control, and laboratory use, can be

found on the IEC website.

This Part 2-011 is to be used in conjunction with the latest edition of IEC 61010-1. It was

established on the basis of the third edition (2010) and its Amendment 1 (2016), hereinafter

referred to as Part 1.

This Part 2-011 supplements or modifies the corresponding clauses in IEC 61010-1 so as to

convert that publication into the IEC standard: Particular requirements for REFRIGERATING

EQUIPMENT.

Where a particular subclause of Part 1 is not mentioned in this Part 2-011, that subclause

applies as far as is reasonable. Where this Part 2-011 states "addition", "modification",

"replacement", or "deletion", the relevant requirement, test specification, or note in Part 1

should be adapted accordingly.
In this standard:
1) the following print types are used:
– requirements and definitions: in roman type;
– NOTES: in smaller roman type;
– conformity and tests: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL
ROMAN CAPITALS.

2) subclauses, figures, tables and notes which are additional to those in Part 1 are numbered

starting from 101. Additional annexes are lettered starting from AA and additional list

items are lettered from aa).
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– 6 – IEC 61010-2-011:2019 © IEC 2019

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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SIST EN IEC 61010-2-011:2022
IEC 61010-2-011:2019 © IEC 2019 – 7 –
INTRODUCTION

This Part 2-011, along with Part 2-010 and Part 2-012, taken together, address the specific

HAZARDS associated with the heating and cooling of materials by equipment and are organized

as follows:
IEC 61010-2-010 Specifically addresses the HAZARDS associated with equipment
incorporating heating systems.
IEC 61010-2-011 Specifically addresses the HAZARDS associated with equipment
incorporating REFRIGERATING SYSTEMS.
IEC 61010-2-012 Specifically addresses the HAZARDS associated with equipment
incorporating both heating and REFRIGERATING SYSTEMS that interact
with each other such that the combined heating and REFRIGERATING
SYSTEM yield additional or more severe HAZARDS for the two systems
than if treated separately. It also addresses the HAZARDS associated
with the treatment of materials by other factors like irradiation,
excessive humidity, CO and mechanical movement.
Guidance for the application of the correct Part 2 standard(s)

When the equipment includes only a material heating system, and no REFRIGERATING SYSTEM

or other environmental factors apply, then Part 2-010 applies without needing Part 2-011 or

Part 2-012. Similarly, when the equipment includes only a REFRIGERATING SYSTEM, and no

material heating system or other environmental factors apply, then Part 2-011 applies without

needing Part 2-010 or Part 2-012. However, when the equipment incorporates both a material

REFRIGERATING SYSTEM or the materials being treated in the intended
heating system, and a

application introduce significant heat into the REFRIGERATING SYSTEM, a determination should

be made as to whether the interaction between the two systems will generate additional or

more severe HAZARDS than if the systems were evaluated separately (CONTROLLED

TEMPERATURE, see flow chart of Figure 102 for selection process). If the interaction of the

heating and cooling functions yields no additional or more severe HAZARDS then both

Part 2-010 and Part 2-011 apply for their respective functions. Conversely, if additional or

more severe HAZARDS result from the combining of the heating and cooling functions, or if the

equipment incorporates additional material treatment factors, then Part 2-012 applies, but not

Part 2-010 or Part 2-011.
What HAZARDS are applicable for a REFRIGERATING SYSTEM?

The typical HAZARDS for a REFRIGERATING SYSTEM (see Figure 101) consisting of a MOTOR-

COMPRESSOR, a condenser, an expansion device and an evaporator include but are not

limited to:
MOTOR-
– The excess of temperature of the low-pressure side (return temperature) to the

COMPRESSOR is higher than admissible. A MOTOR-COMPRESSOR incorporates a REFRIGERANT

cooled motor and it should be established that the maximum temperatures of low-pressure

side under least favourable condition do not exceed the insulation RATINGS within the

motor.

– The excess of pressure of the low-pressure side at the inlet to the MOTOR-COMPRESSOR is

higher than admissible. The housing of the MOTOR-COMPRESSOR is exposed to this
pressure and so the design RATING of the MOTOR-COMPRESSOR housing should

accommodate the worst-case pressures whilst providing the correct safety margin for a

pressure vessel.

– The excess of temperature of the high-pressure side to the condenser is higher than

admissible. The temperatures of the high-pressure side under the most unfavourable

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SIST EN IEC 61010-2-011:2022
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conditions can present a temperature HAZARD if the OPERATOR is exposed, or an electrical

HAZARD if insulation is degraded.

– The excess of pressure of the high-pressure side to the condenser is higher than

REFRIGERANT components downstream of the MOTOR-COMPRESSOR up to
admissible. The

the expansion device are exposed to this pressure and so the design RATING of these

components should accommodate the worst case pressures whilst providing the correct

safety margin for a pressure vessel.
CONTROLLED TEMPERATURES where the heat is being extracted from, may
– The maximum

impact the maximum temperature of the low-pressure side to the MOTOR-COMPRESSOR as

well as present a temperature HAZARD if the OPERATOR is exposed, or an electrical HAZARD

if insulation is degraded. Whether this CONTROLLED TEMPERATURE is derived from an

integral heating function of the device or from the heat dissipated from the material being

cooled, the impact under worst-case conditions should be evaluated.

– The current draw of the equipment should be established when including the worst-case

running conditions of the REFRIGERATING SYSTEM including any defrost cycles that may

apply.

The worst-case conditions should be determined for the equipment and will include both the

least favourable NORMAL USE conditions as well as the most unfavourable testing results under

SINGLE FAULT CONDITIONS.
Figure 101 – Schema of a REFRIGERATING SYSTEM incorporating a condenser
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SIST EN IEC 61010-2-011:2022
IEC 61010-2-011:2019 © IEC 2019 – 9 –

The selection process is illustrated in the following flow chart (see Figure 102).

Figure 102 – Flow chart illustrating the selection process
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SIST EN IEC 61010-2-011:2022
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SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
1 Scope and object
This clause of Part 1 is applicable, except as follows:
1.1.1 Equipment included in scope
Replacement:
Replace the second paragraph by the following:

This Part 2 of IEC 61010 specifies particular safety requirements for the following types

a) to c) of electrical equipment and their accessories, wherever they are intended to be used,

whenever that equipment incorporates REFRIGERATING SYSTEMS as an integral part of, or

separate from, the equipment and the equipment is in direct control of the REFRIGERATING

SYSTEM.

This document details all the requirements when up to 150 g of FLAMMABLE REFRIGERANT are

used per stage of a REFRIGERATING SYSTEM. Additional requirements beyond the current scope

of this document apply if a REFRIGERANT charge of FLAMMABLE REFRIGERANT exceeds this

amount.
Addition:
Add the following text after the last paragraph:

NOTE 101 Examples for REFRIGERATING EQUIPMENT include, but are not limited to, laboratory equipment such as

laboratory refrigerators, freezers, refrigerated display cabinets.

It is possible that all or part of the equipment falls within the scope of one or more other

Part 2 standards of IEC 61010 as well as within the scope of this standard. In that case, the

requirements of those other Part 2 standards will also apply. In particular, if equipment is

intended to be used as a centrifuge, the requirements of IEC 61010-2-020 apply. However,

when the equipment incorporates a refrigerating system and a heating function where the

combination of the two introduces additional or more severe HAZARDS than if treated

separately, then it is possible that IEC 61010-2-012 is applicable instead of this Part 2-011.

See further information in the flow chart (Figure 102) for the selection process and guidance

in the Introduction.
1.1.2 Equipment excluded from scope
Addition:
Add the following new item after item j):
or equipment incorporating:

aa) a transcritical REFRIGERANT SYSTEM (system that uses CO ) or a system that uses

ammonia (NH ) as the REFRIGERANT.
---------------------- Page: 14 ----------------------
SIST EN IEC 61010-2-011:2022
IEC 61010-2-011:2019 © IEC 2019 – 11 –
1.2 Object
1.2.1 Aspects included in scope
Replacement:
Replace the first paragraph by the following:

The object of this document is to ensure that the design and methods of construction of

REFRIGERATING EQUIPMENT provide adequate protection for OPERATORS, bystanders, trained

service personnel, and the surrounding area against the specific HAZARDS that relate to

REFRIGERATING SYSTEMS.
Addition:
Add the following note after the existing note:

NOTE 101 A list of HAZARDS typically associated with REFRIGERATING SYSTEMS and REFRIGERANTS is included in

Annex BB.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
Add the following references to the list:

IEC 60079-15:2010, Explosive atmospheres – Part 15: Equipment protection by type of

protection "n"

IEC 60335-2-34:2012, Household and similar electrical appliances – Safety – Part 2-34:

Particular requirements for motor-compressors
IEC 60335-2-34:2012/AMD1:2015
IEC 60335-2-34:2012/AMD2:2017

ISO 7010, Graphical symbols – Safety colours and safety signs – Registered safety signs

3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
Addition:
Add the following new terms and definitions:
3.101
REFRIGERATING EQUIPMENT

test, measurement, control or laboratory equipment that incorporates a REFRIGERATING SYSTEM

either as an integral part of or separate from the equipment
3.102
REFRIGERATING SYSTEM

combination of interconnected REFRIGERANT-containing parts constituting one closed

REFRIGERANT circuit in which the REFRIGERANT is circulated for the purpose of extracting and

rejecting heat
---------------------- Page: 15 ----------------------
SIST EN IEC 61010-2-011:2022
– 12 – IEC 61010-2-011:2019 © IEC 2019

[SOURCE: ISO 5149-1:2014, 3.1.9, modified – The term in brackets "(heat pump)", the words

"(heating and cooling)", and the note to entry, have been omitted.]
3.103
FLAMMABLE REFRIGERANT
REFRIGERANT
...

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