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IEC 61010-2-011
Edition 2.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
GROUP SAFETY PUBLICATION
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
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IEC 61010-2-011
Edition 2.0 2019-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
GROUP SAFETY PUBLICATION
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.080 ISBN 978-2-8322-6726-4
– 2 – IEC 61010-2-011:2019 RLV © 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 . 20
8 Resistance to mechanical stresses . 20
9 Protection against the spread of fire . 20
10 Equipment temperature limits and resistance to heat . 20
11 Protection against HAZARDS from fluids and solid foreign objects . 22
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 33
13 Protection against liberated gases and substances, explosion and implosion . 33
14 Components and subassemblies . 33
15 Protection by safety interlocks . 33
16 HAZARDS resulting from application . 33
17 RISK assessment . 34
Annexes . 35
Annex G (informative) Leakage and rupture from fluids under pressure . 36
Annex L (informative) Index of defined terms . 37
Annex AA (normative) Non-sparking "n" electrical apparatus device . 38
Annex BB (informative) HAZARDS associated with REFRIGERATING SYSTEMS and
REFRIGERANTS . 39
Annex CC (informative) Safety requirements for components and piping . 41
Annex DD (informative) Equipment containing FLAMMABLE REFRIGERANTS – Information
and marking requirements. 46
Bibliography . 50
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 . 28
Table 1 – Symbols . 17
Table 101 – Maximum temperatures for MOTOR-COMPRESSORS . 21
Table 102 – Minimum temperature for determination of saturated vapor pressure of
REFRIGERANT . 23
Table 103 – REFRIGERANT flammability parameters . 31
Table CC.1 – Parameters of pressure vessels according to EN 14276-1 . 41
Table CC.2 – Parameters of pipping according to EN 14276-2 . 43
Table CC.3 – Component and piping requirements . 44
Table CC.4 – Minimum wall thickness for copper and steel tubing . 45
Table DD.1 – Quantity of Group A2/A3 REFRIGERANT per occupied space . 49
– 4 – IEC 61010-2-011:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-011: Particular requirements for REFRIGERATING EQUIPMENT
FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
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;
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;
f) move text of 4.4.2.101 to 4.3.2.101, since the purpose of ABNORMAL OPERATION, as defined,
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;
i) use of defined term NORMAL CONDITION to replace normal operation;
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 conju
...