EN 61010-2-012:2016

SLOVENSKI STANDARD
01-junij-2017
9DUQRVWQH]DKWHYH]DHOHNWULþQRRSUHPR]DPHULWYHQDG]RULQODERUDWRULMVNR
XSRUDERGHO3RVHEQH]DKWHYH]DRSUHPR]DNOLPDWVNDLQRNROMVND
SUHVNXãDQMDWHUGUXJRRSUHPR]DXUDYQDYDQMHWHPSHUDWXUH,(&
Safety requirements for electrical equipment for measurement, control, and laboratory
use - Part 2-012: Particular requirements for climatic and environmental testing and other
temperature conditioning equipment (IEC 61010-2-012:2016)
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2
-012: Besondere Anforderungen an Klima- und Umwelttestgeräte und andere
Temperatur-Konditionierungsgeräte (IEC 61010-2-012:2016)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de
laboratoire - Partie 2-012: Exigences particulières pour appareils d'essais climatiques et
d'environnement, et autres appareils de conditionnement de température
Ta slovenski standard je istoveten z: EN 61010-2-012:2016
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
19.080 (OHNWULþQRLQHOHNWURQVNR Electrical and electronic
SUHVNXãDQMH 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 61010-2-012

NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2016
ICS 19.080
English Version
Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 2-012: Particular requirements
for climatic and environmental testing and other temperature
conditioning equipment
(IEC 61010-2-012:2016)
Règles de sécurité pour appareils électriques de mesurage, Sicherheitsbestimmungen für elektrische Mess-, Steuer-,
de régulation et de laboratoire - Partie 2-012: Exigences Regel- und Laborgeräte - Teil 2-012: Besondere
particulières pour les appareils d'essais climatiques et Anforderungen an Klima- und Umwelttestgeräte und andere
d'environnement, et autres appareils de conditionnement de Temperatur-Konditionierungsgeräte
température (IEC 61010-2-012:2016)
(IEC 61010-2-012:2016)
This European Standard was approved by CENELEC on 2016-08-16. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61010-2-012:2016 E

European foreword
The text of document 66/590/FDIS, future edition 1 of IEC 61010-2-012, 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 61010-2-012:2016.

The following dates are fixed:
(dop) 2017-05-16
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-08-19
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61010-2-012:2016 was approved by CENELEC as a European
Standard without any modification.
The Bibliography of EN 61010-1:2010 is applicable except as follows:

In the bibliography of EN 61010-1:2010, the following notes have to be added for the standards indicated:

1)
IEC 60068-1:1988+A1:1992 NOTE Harmonized as EN 60068-1:1994 (not modified).
IEC 60068-2-1:2007 NOTE Harmonized as EN 60068-2-1:2007 (not modified).
IEC 60068-2-2:2007 NOTE Harmonized as EN 60068-2-2:2007 (not modified).
IEC 60068-2-5:2010 NOTE Harmonized as EN 60068-2-5:2011 (not modified).
IEC 60068-2-10:2005 NOTE Harmonized as EN 60068-2-10:2005 (not modified).
IEC 60068-2-11:1981 NOTE Harmonized as EN 60068-2-11:1999 (not modified).
IEC 60068-2-13:1983 NOTE Harmonized as EN 60068-2-13:1999 (not modified).
IEC 60068-2-14:2009 NOTE Harmonized as EN 60068-2-14:2009 (not modified).
IEC 60068-2-30:2005 NOTE Harmonized as EN 60068-2-30:2005 (not modified).
IEC 60068-2-38:2009 NOTE Harmonized as EN 60068-2-38:2009 (not modified).
2)
IEC 60068-2-39:1976 NOTE Harmonized as EN 60068-2-39:1999 (not modified).
IEC 60068-2-40:1976+A1:1983 NOTE Harmonized as EN 60068-2-40:1999 (not modified).
IEC 60068-2-41:1976+A1:1983 NOTE Harmonized as EN 60068-2-41:1999 (not modified).
IEC 60068-2-53:2010 NOTE Harmonized as EN 60068-2-53:2010 (not modified).
IEC 60068-2-66:1994 NOTE Harmonized as EN 60068-2-66:1994 (not modified).
IEC 60068-2-67:1995 NOTE Harmonized as EN 60068-2-67:1996 (not modified).
3)
IEC 60068-2-78:2001 NOTE Harmonized as EN 60068-2-78:2001 (not modified).
IEC 60068-3-5 NOTE Harmonized as EN 60068-3-5.
IEC 60335-2-41 NOTE Harmonized as EN 60335-2-41.

1)
Superseded by EN 60068-1:2014 (IEC 60068-1:2013).
2)
Superseded by EN 60068-2-39:2016 (IEC 60068-2-39:2015).
3)
Superseded by EN 60068-2-78:2013 (IEC 60068-2-78:2012).
IEC 60335-2-73:2002 NOTE Harmonized as EN 60335-2-73:2003 (modified).
IEC 60335-2-73:2002/A1:2006 NOTE Harmonized as EN 60335-2-73:2003/A1:2006 (not modified).
IEC 60335-2-74:2002 NOTE Harmonized as EN 60335-2-74:2003 (not modified).
IEC 60335-2-74:2002/A1:2006 NOTE Harmonized as EN 60335-2-74:2003/A1:2006 (not modified).
IEC 60335-2-89 NOTE Harmonized as EN 60335-2-89.
IEC 60335-2-98:2002 NOTE Harmonized as EN 60335-2-98:2003 (not modified).
IEC 60335-2-98:2002/A1:2004 NOTE Harmonized as EN 60335-2-98:2003/A1:2005 (not modified).
IEC 61010-2-010 NOTE Harmonized as EN 61010-2-010.
IEC 61770:2008 NOTE Harmonized as EN 61770:2009 (not modified).
ISO 4126-1 NOTE Harmonized as EN ISO 4126-1.
ISO 9227 NOTE Harmonized as EN ISO 9227.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu

Annex ZA of EN 61010-1:2010 is applicable, except as follows:

Publication Year Title EN/HD Year
Additions:
IEC 60079-15 2010 Explosive atmospheres - EN 60079-15 2010
Part 15: Equipment protection by type of
protection "n"
IEC 60079-20-1 -  Explosive atmospheres - EN 60079-20-1 -
Part 20-1: Material characteristics for gas and
vapour classification - Test methods and data
IEC 60335-2-24 2010 Household and similar electrical appliances - EN 60335-2-24 2010
Safety -
Part 2-24: Particular requirements for
refrigerating appliances, ice-cream appliances
and ice makers
+A1 (mod) 2012  +A1 2016
IEC 60335-2-34 2012 Household and similar electrical appliances - EN 60335-2-34 2013
Safety -
Part 2-34: Particular requirements for motor-
compressors
+A1 2015  +A1 2015
IEC 62471 -  Photobiological safety of lamps and lamp EN 62471 -
systems
IEC/TR 62471-2 -  Photobiological safety of lamps and lamp - -
systems -
Part 2: Guidance on manufacturing
requirements relating to non-laser optical
radiation safety
ISO 7010 2011 Graphical symbols - Safety colours EN ISO 7010 2012
and safety signs - Registered safety signs

IEC 61010-2-012 ®
Edition 1.0 2016-07
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 2-012: Particular requirements for climatic and environmental testing and

other temperature conditioning equipment

Règles de sécurité pour appareils électriques de mesurage, de régulation et

de laboratoire –
Partie 2-012: Exigences particulières pour les appareils d'essais climatiques et

d'environnement, et autres appareils de conditionnement de température

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080 ISBN 978-2-8322-3504-1

– 2 – IEC 61010-2-012:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope and object . 9
2 Normative references. 10
3 Terms and definitions . 10
4 Tests . 16
5 Marking and documentation . 22
6 Protection against electric shock . 32
7 Protection against mechanical HAZARDS . 33
8 Resistance to mechanical stresses . 35
9 Protection against the spread of fire . 36
10 Equipment temperature limits and resistance to heat . 37
11 Protection against HAZARDS from fluids . 41
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 56
13 Protection against liberated gases and substances, explosion and implosion . 57
14 Components and subassemblies . 59
15 Protection by interlocks . 61
16 HAZARDS resulting from application. 63
17 RISK assessment . 64
Annex . 65
Annex K (normative) Insulation requirements not covered by 6.7 . 65
Annex L (informative) Index of defined terms . 66
Annex AA (informative) Useful symbols . 68
Annex BB (informative) Protection for people who are inside WALK-IN EQUIPMENT . 71
Annex CC (informative) Safety requirements for components and piping . 73
Annex DD (informative) Equipment containing FLAMMABLE REFRIGERANTS information
and marking requirements . 79
Annex EE (normative) Non-sparking “n” electrical device . 82
Bibliography . 83

Figure 101 – Schema of a REFRIGERATING SYSTEM incorporating a CONDENSER . 7
Figure 102 – Flow chart illustrating the selection process . 8
Figure 103 –Scratching TOOL tip details . 51

Table 1 – Symbols . 25
Table 101 – Time-temperature conditions . 29
Table 102 – Maximum temperatures for MOTOR-COMPRESSORS . 39
Table 103 – Minimum temperature for determination of SATURATED-VAPOUR PRESSURE
of REFRIGERANT . 46
Table 104 – REFRIGERANT flammability parameters . 54
Table 105 – Lamp or lamp systems considered photobiologically safe . 57

IEC 61010-2-012:2016 © IEC 2016 – 3 –
Table 106 – Lamp or lamp systems considered photobiologically safe under certain
conditions . 57
Table AA.1 – Useful symbols . 68
Table CC.1 – Parameters of pressure vessels according to EN 14276-1 . 74
Table CC.2 – Parameters of piping according to EN 14276-2 . 75
Table CC.3 – Components and piping requirements . 76
Table CC.4 – Minimum wall thickness for copper and steel tubing . 78

– 4 – IEC 61010-2-012:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR
MEASUREMENT, CONTROL AND LABORATORY USE –

Part 2-012: Particular requirements for climatic and environmental testing
and other temperature conditioning 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 61010-2-012 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.
The text of this standard is based on the following documents:
FDIS Report on voting
66/590/FDIS 66/599/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 61010-2-012:2016 © IEC 2016 – 5 –
A list of all parts of the IEC 61010 series, under the general title, Safety requirements for
electrical equipment for measurement, control, and laboratory use, may be found on the IEC
website.
IEC 61010-2-012 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) of IEC 61010-1
This Part 2-012 .supplements or modifies the corresponding clauses in IEC 61010-1 so as to
convert that publication into the IEC standard: Particular requirements for climatic and
environmental testing and other temperature conditioning equipment.
Where a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies
as far as is reasonable. where this part 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.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication 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.
– 6 – IEC 61010-2-012:2016 © IEC 2016
INTRODUCTION
This standard, in conjunction with Part 2-010 and Part 2-011, addresses the specific HAZARDS
associated with the heating and cooling of materials by equipment and are segregated as
follows:
specifically addresses the HAZARDS associated with equipment incorporating heating
IEC 61010-2-010
systems.
specifically addresses the HAZARDS associated with equipment incorporating REFRIGERATING
IEC 61010-2-011
SYSTEMS.
specifically addresses the HAZARDS associated with equipment incorporating both heating
and REFRIGERATING SYSTEMS that interact with each other such that the combined heating
IEC 61010-2-012 and cooling 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 etc.
Guidance for the application of the appropriate 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
heating system, and a REFRIGERATING SYSTEM or the materials being treated in the intended
application introduce significant heat into the REFRIGERATING SYSTEM, a determination should
be made whether the interaction between the two systems will generate additional or more
severe HAZARDS than if the systems were evaluated separately (application temperature, see
flow chart 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 function, or 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:
– The maximum temperature of LOW-PRESSURE SIDE (return temperature) to the MOTOR-
COMPRESSOR. 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 maximum pressure of LOW-PRESSURE SIDE at the inlet to the MOTOR-COMPRESSOR. 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 maximum temperature of HIGH-PRESSURE SIDE to the CONDENSER. The temperatures of
HIGH-PRESSURE SIDE under most unfavourable conditions may present a temperature
HAZARD if the OPERATOR is exposed to or electrical insulation is degraded.
– The maximum pressure of HIGH-PRESSURE SIDE at the outlet to the MOTOR-COMPRESSOR.
The REFRIGERANT components downstream of the MOTOR-COMPRESSOR up to 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 appropriate safety margin for
a pressure vessel.
– The maximum application temperatures, namely, the SOAKED TEMPERATURE CONDITIONS,
where the heat is being extracted from, may impact the maximum temperature of LOW-
PRESSURE SIDE to the MOTOR-COMPRESSOR as well as present a temperature HAZARD if the

IEC 61010-2-012:2016 © IEC 2016 – 7 –
OPERATOR is exposed to or electrical insulation is degraded. Whether this application
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.
Maximum temperature
and pressure at
HIGH-PRESSURE SIDE
CONDENSER
MOTOR-
Expansion
COMPRESSOR
device
EVAPORATOR
Application
under SOAKED
Maximum temperature TEMPERATURE
and pressure at CONDITIONS
LOW-PRESSURE SIDE
IEC
Figure 101 – Schema of a REFRIGERATING SYSTEM incorporating a CONDENSER

– 8 – IEC 61010-2-012:2016 © IEC 2016
The selection process is illustrated in the following flow chart (see Figure 102).
Which Part 2 standard applies for equipment
under the scope of IEC 61010 that incorporates
heating and/or cooling?
Additional material treatment factors may
include irradiation, excessive humidity, CO ,
salt mist and chemicals etc.
Does the equipment
YES NO
Part 2-012 applies
incorporate additional material
alone
treatment factors?
YES NO
Does the equipment include a
REFRIGERATING SYSTEM?
Part 2-010 applies
alone
YES NO
Does the equipment include Part 2-011 applies
the heating of materials? alone
The application temperature could
be derived from the resultant heat
of the material being treated or an
integral heating function
Does the application
YES NO
Part 2-012 applies Both Part 2-010 and
temperature adversely impact
alone Part 2-011 apply
the REFRIGERATING SYSTEM?
The equipment shall be evaluated The equipment may take
to ensure the HAZARDS from the measures to reliably mitigate the
application temperature have impact of the application
been mitigated temperature
IEC
Figure 102 – Flow chart illustrating the selection process

IEC 61010-2-012:2016 © IEC 2016 – 9 –
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR
MEASUREMENT, CONTROL AND LABORATORY USE –

Part 2-012: Particular requirements for climatic and environmental testing
and other temperature conditioning 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 first paragraph by the following:
This group safety publication is primarily intended to be used as a product safety standard for
the products mentioned in the scope, but shall also be used by technical committees in the
preparation of their publications for products similar to those mentioned in the scope of this
standard, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
This Part 2 of IEC 61010 specifies safety requirements for electrical equipment and their
accessories within the categories a) through c), wherever they are intended to be used,
whenever that equipment incorporates one or more of the following characteristics:
– A REFRIGERATING SYSTEM that is acted on or impacted by an integral heating function such
that the combined heating and cooling system generates additional and/or more severe
HAZARDS than those for the two systems if treated separately.
– The materials being treated in the intended application introduce significant heat into the
REFRIGERATING SYSTEM that the cooling system in the application yield additional and/or
more severe HAZARDS than those for the cooling system if operated at the maximum RATED
ambient alone.
– An irradiation function for the materials being treated presenting additional HAZARDS.
– A function to expose the materials being treated to excessive humidity, carbon dioxide,
salt mist, or other substances which may result in additional HAZARDS.
– A function of MECHANICAL MOVEMENT presenting additional HAZARDS.
– Provision for an OPERATOR to walk-in to the operating area to load or unload the materials
being treated.
Addition:
Add the following text after the last paragraph:
NOTE 101 Examples of such equipment include environmental testing and plant growth TEST CHAMBERS,
refrigerating CIRCULATORS which incorporate heating, recirculating coolers for extracting heat.
If 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, it should also meet the requirements
of those other Part 2 standards. However, when the equipment incorporates only a
REFRIGERATING SYSTEM or only a heating function or a combination of the two without
introducing additional HAZARDS described in the above dashed paragraphs then the
application of IEC 61010-2-011 or IEC 61010-2-010 or both, as applicable, shall be
considered instead of this Part 2.

– 10 – IEC 61010-2-012:2016 © IEC 2016
See further information in the flow chart for selection process and guidance in the
INTRODUCTION.
NOTE 102 Subclause 3.1.107 and Annex BB provides definition and requirements for protection of people who
are inside WALK-IN EQUIPMENT.
1.1.2 Equipment excluded from scope
Addition:
Add the following two new items after item j):
aa) equipment for the heating, cooling, and ventilation of laboratories;
bb) sterilizing equipment.
1.2 Object
1.2.1 Aspects included in scope
Addition:
Add two new items to the list:
aa) biohazards (see 13.101);
bb) hazardous chemical substances (see13.102).
2 Normative references
This clause of Part 1 is applicable, except as follows:
Additions:
IEC 60079-15:2010, Explosive Atmospheres – Part 15: Equipment protection by type of
protection “n”
IEC 60079-20, Explosive Atmospheres – Part 20: Material characteristics for gas and vapour
classification
IEC 60335-2-24:2010, Household and similar electrical appliances – Safety – Part 2-24:
Particular requirements for refrigerating appliances, ice-cream appliances and ice makers
IEC 60335-2-24:2010/AMD1:2012
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 62471, Photobiological safety of lamps and lamp systems
IEC TR 62471-2, Photobiological safety of lamps and lamp systems – Part 2: Guidance on
manufacturing requirements relating to non-laser optical radiation safety
ISO 7010:2011,Graphical symbols – Safety colours and safety signs – Registered safety signs
3 Terms and definitions
This clause of Part 1 is applicable except as follows:

IEC 61010-2-012:2016 © IEC 2016 – 11 –
3.1 Equipment and states of equipment
Addition:
Additional definitions:
3.1.101
BATH
complete device intended for application of controlled temperatures to SPECIMENS by
immersion in a temperature-controlled liquid HEAT TRANSFER MEDIUM
3.1.102
CIRCULATOR
equipment intended for application of controlled temperatures to APPLICATION SYSTEM by
external circulating of a temperature-controlled liquid HEAT TRANSFER MEDIUM
3.1.103
TEST CHAMBER
ENCLOSURE or space in some part of which specified conditions can be achieved, in particular,
temperature, humidity, irradiation, low air pressure, mould growth and salt spray
3.1.104
COMBINED TEST CHAMBER
special TEST CHAMBER combined with function of MECHANICAL MOVEMENT, for example, for
vibrating, shocking, impacting and similar dynamic tests
3.1.105
INCUBATOR
special TEST CHAMBER, primarily for incubation of microorganisms and tissue culture
3.1.106
SHAKER
equipment to disperse or dissolve one substance in another by MECHANICAL MOVEMENT without
the use of blades or stirrers that might destroy the structure of the substance, in particular,
shaking BATH and shaking INCUBATOR
3.1.107
WALK-IN EQUIPMENT
TEST CHAMBER or INCUBATOR, the door of which allows the OPERATOR to enter and remain
inside the equipment even with the door closed
3.1.108
DRYING-OUT
period to wait or a procedure to be carried out before operation to return the equipment to
NORMAL CONDITION if it has been transported or stored in humid conditions, or moved from a
cold environment to a much warmer one where condensation could occur, and could cause
the equipment to then fail to meet all the safety requirements of this standard
3.1.109
STANDSTILL
period to wait or a procedure to be carried before operation to return the equipment to NORMAL
CONDITION if it has been transported or moved or shaken or tilted or inverted and which could
cause the equipment to fail to meet all the safety requirements of this standard

– 12 – IEC 61010-2-012:2016 © IEC 2016
3.2 Parts and accessories
Addition:
Additional definitions:
3.2.101
RESISTANCE-HEATING DEVICE
part of a resistance-heating equipment, comprising one or more heating resistors, typically
composed of metallic conductors or an electrically conductive compound suitably insulated
and protected
[SOURCE: IEC 60050-426:2008, 426-08-08, modified – “resistance-heating unit” has been
replaced with “resistance-heating equipment”]
3.2.102
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
[SOURCE: ISO 5149: 1993, 1.3.47]
3.2.103
CASCADE SYSTEM
REFRIGERATING SYSTEM consisting of two or more independent refrigeration circuits where the
CONDENSER of one system rejects heat directly to the EVAPORATOR of another
[SOURCE: EN 378-1: 2008, 3.1.12, modified – “REFRIGERATING SYSTEM consisting of” has been
included]
3.2.104
MOTOR-COMPRESSOR
refrigerating subassembly consisting of the mechanical mechanism of the compressor and the
motor, both of which are enclosed in the same sealed housing, with no external shaft seals,
and with the motor operating in a REFRIGERANT atmosphere with or without oil.
Note 1 to entry: The housing may bepermanently sealed, such as by welding or brazing (hermetic MOTOR-
COMPRESSOR), or may be sealed by gasketted joints (semi-hermetic MOTOR-COMPRESSOR). A terminal box, a
terminal boxcover, and other electrical components or an electronic control system may be included
[SOURCE: IEC 60335-2-34:2012/AMD1:2015, 3.101, modified – “appliance” has been replaced
by “refrigerating subassembly”]
3.2.105
CONDENSER
heat-exchanger in which vaporized REFRIGERANT is liquified by removal of heat
[SOURCE: ISO 5149: 1993, 1.3.11]
3.2.106
CONDENSING UNIT
specific refrigerating subassembly combination for a given REFRIGERANT, consisting of one or
more MOTOR-COMPRESSORS, CONDENSERS, liquid receivers (when required) and the regularly
furnished accessories
[SOURCE: ISO 5149: 1993, 1.3.12, modified – “machine” has been replaced by “subassembly”]

IEC 61010-2-012:2016 © IEC 2016 – 13 –
3.2.107
EVAPORATOR
heat-exchanger in which liquid REFRIGERANT is vaporized by absorption of heat
[SOURCE: IEC 60335-2-40: 2009, 3.110]
3.2.108
HIGH-PRESSURE SIDE
part of a REFRIGERATING SYSTEM operating at approximately the CONDENSER pressure
[SOURCE: ISO 5149: 1993, 1.3.24]
3.2.109
LOW-PRESSURE SIDE
part of a REFRIGERATING SYSTEM operating at approximately the EVAPORATOR pressure
[SOURCE: ISO 5149: 1993, 1.3.30]
3.2.110
CIRCULATING PUMP
pressure and/or suction pump transporting the liquid HEAT TRANSFER MEDIUM in a BATH or
CIRCULATOR
3.2.111
CIRCULATING FAN
propeller fan or centrifugal impellor designed to circulate the air in a TEST CHAMBER or an
INCUBATOR with or without any air duct
3.2.112
HUMIDIFIER
electric device that generates a water mist or steam and releases it into a room, greenhouse
or other ENCLOSURE
3.2.113
BATH TANK
open or enclosed vessel containing the HEAT TRANSFER MEDIUM, in a BATH or CIRCULATOR
3.2.114
LIQUID CONNECTION
pipe fitting through which liquid is expelled from or discharged into a vessel or a heat
exchanger
3.2.115
VENTILATOR
device for replacing air inside a TEST CHAMBER or an INCUBATOR by outside air
3.2.116
TEMPERATURE-LIMITING DEVICE
temperature-actuated device that is designed to prevent unsafe temperatures
[SOURCE: EN 378-1:2008, 3.6.5]
3.2.117
LIQUID LEVEL CUT OUT
liquid level-actuated device designed to prevent unsafe liquid levels
[SOURCE: EN 378-1: 2008, 3.6.12]

– 14 – IEC 61010-2-012:2016 © IEC 2016
3.2.118
PRESSURE-LIMITING DEVICE
pressure-actuated device (for example, a high-pressure switch) which is designed to stop the
operation of pressure-imposing element and may also operate an alarm
3.2.119
PRESSURE-RELIEF DEVICE
valve or disc designed to relieve excessive pressure automatically
[SOURCE: ISO 5149: 1993, 1.3.40]
3.2.120
FLAMMABLE LIQUID
liquid capable of producing a flammable gas or vapour which, when mixed with air in certain
proportions, will form an EXPLOSIVE GAS ATMOSPHERE under any foreseeable operating
conditions
3.2.121
HEAT TRANSFER MEDIUM
medium used to transfer heat to the material being processed
3.2.122
REFRIGERANT
fluid used for heat transfer in a REFRIGERATING SYSTEM, which absorbs heat at a low
temperature and a low pressure of the fluid and rejects heat at a higher temperature and a
higher pressure of the fluid, usually involving changes of state of the fluid
[SOURCE: ISO 5149: 1993, 1.3.45]
3.2.123
FLAMMABLE REFRIGERANT
REFRIGERANT with a flammability classification of group 2 or 3 in accordance with ISO 5149
[SOURCE: IEC 60335-2-24:2010/AMD1:2012, 3.109]
3.2.124
SPECIMEN
any material, substance, or product designated to be processed, for example, in a BATH, TEST
CHAMBER or an INCUBATOR
3.2.125
APPLICATION SYSTEM
system or device intended to work with a CIRCULATOR to carry out a functional purpose
3.5 Safety terms
Addition:
Additional definitions:
3.5.101
SATURATED-VAPOUR PRESSURE (OF REFRIGERANT)
vapour pressure (of REFRIGERANT) at which the liquid and vapour can exist in equilibrium at a
given temperature
IEC 61010-2-012:2016 © IEC 2016 – 15 –
3.5.102
MAXIMUM ALLOWABLE PRESSURE
PS
maximum pressure for which the equipment is designed, as specified by the manufacturer
Note 1 to entry: This note applies to the French language only.
[SOURCE: EN 378-1:2008, 3.3.2]
3.5.103
RATED PRESSURE
MAXIMUM ALLOWABLE PRESSURE for pressure components of equipment with regard to their
ability to withstand pressures as specified by the manufacturer
3.5.104
ACTIVE COOLING CONTROL RANGE
ACC RANGE
working temperature range that is achieved by an active REFRIGERATING SYSTEM
Note 1 to entry: This note applies to the French language only.
3.5.105
FLASH POINT
lowest liquid temperature at which, under certain standardized conditions, a liquid gives off
vapours in quantity such as to be capable of forming an ignitable vapour/air mixture
Note 1 to entry: At the FLASH POINT, the vapour may cease to burn when the ignition source is removed.
[SOURCE: IEC 60050-426:2008, 426-02-14]
3.5.106
FIRE POINT
lowest temperature at which a substance ignites and continues to burn for at least 5 s after a
small flame has been applied to its surface under standardized conditions
3.5.107
AUTO IGNITION TEMPERATURE
lowest temperature at which a substance will spontaneously ignite in a normal atmosphere
without an external ignition source, such as a flame or spark.
Note 1 to entry: Once ignited, the substance will continue to burn until it is either completely consumed or the
temperature of the remainder of the substance is reduced to or below its FIRE POINT.
3.5.108
LOWER EXPLOSIVE LIMIT
LEL
concentration of flammable gas or vapour in air, below which an EXPLOSIVE GAS ATMOSPHERE
will not be formed
Note 1 to entry: This note applies to the French language only.
[SOURCE: IEC 60050-426:2008, 426-02-09]
3.5.109
EXPLOSIVE GAS ATMOSPHERE
mixture with air, under atmospheric conditions, of flammable substances in the form of gas or
vapour which, after ignition, permits self sustaining flame propagation
[SOURCE: IEC 60050-426:2008, 426-01-07]

– 16 – IEC 61010-2-012:2016 © IEC 2016
3.5.110
SOAKED TEMPERATURE CONDITION
temperature conditions when the ambient temperature of the equipment under test (EUT)
equals to ±2,0°C of maximum ambient of 1.4.1 for NORMAL USE, storage or transport, and the
operating temperature of the EUT equals to ±2,0°C of the maximum ACC RANGE with the
MOTOR-COMPRESSOR running or, the maximum RATED operating temperature with the MOTOR-
COMPRESSOR off
Note 1 to entry: This note applies to the French language only.
3.5.111
MECHANICAL MOVEMENT
general description for the motion of materials being processed, for example in a SHAKER or
COMBINED TEST CHAMBER
3.5.112
MOVEMENT FREQUENCY
number of complete cycles of MECHANICAL MOVEMENT
3.5.113
MOVEMENT AMPLITUDE
maximum
...