IEC TR 62130:2012

IEC/TR 62130 ®
Edition 1.0 2012-09
TECHNICAL
REPORT
colour
inside
Climatic field data including validation

IEC/TR 62130:2012(E)
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IEC/TR 62130 ®
Edition 1.0 2012-09
TECHNICAL
REPORT
colour
inside
Climatic field data including validation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 19.040 ISBN 978-2-83220-342-2

– 2 – TR 62130 © IEC:2012(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Current IEC 60721-2-1 standard dealing with temperature and humidity . 6
4 Task 1 . 9
5 Task 2 . 10
5.1 General . 10
5.2 Description of the comparison process . 10
5.3 Traceability of temperature and humidity parameters by using the main
process . 11
5.3.1 General . 11
5.3.2 Process phase 1 – Decide what standard and what parameters to
review . 11
5.3.3 Process phase 2 – Identify data sources and other references . 11
5.3.4 Process phase 3 – Comparison process to ensure traceability of data . 12
5.3.5 Process phase 4 – Make decision about change needs . 12
6 Task 3 . 12
6.1 General . 12
6.2 Process for analysing the map . 13
6.3 Impact analysis . 14
7 Task 4 – To make traceable recommendations for updating IEC 60721-2-1 . 14
7.1 General . 14
7.2 Recommendation 1 – Naming of new climatic types . 14
7.3 Recommendation 2 – Definitions for new climatic types . 14
7.4 Recommendation 3 – Values for new climatic types . 15
7.5 Recommendation 4 – Update of the map of climatic classes . 16
Annex A (informative) Analysis of temperature and absolute humidity . 18
Annex B (informative) Climatic data from various locations . 25
Bibliography . 30

Figure 1 – Current map showing types of climate and their combinations . 8
Figure 2 – Current map showing the groups of climates . 9
Figure 3 – Screenshot from data analysis spreadsheet . 10
Figure 4 – High level comparison process to ensure traceability of data. 11
Figure 5 – Main climatic types from reference [5] . 17
Figure A.1 – Polar: Daily mean values . 18
Figure A.2 – Polar: Annual means . 18
Figure A.3 – Polar – Extremes . 19
Figure A.4 – Cold: Daily mean values . 19
Figure A.5 – Cold: Annual means . 20
Figure A.6 – Cold: Extremes . 20
Figure A.7 – Warm temperate: Daily mean values . 21

TR 62130 © IEC:2012(E) – 3 –
Figure A.8 – Warm temperate: Annual means . 21
Figure A.9 – Warm temperate: Extremes. 21
Figure A.10 – Arid: Mean daily values . 22
Figure A.11 – Arid: Annual means . 22
Figure A.12 – Arid: Extremes . 23
Figure A.13 – Arid: Daily means . 23
Figure A.14 – Arid: Annual means . 24
Figure A.15 – Arid: Extremes . 24

Table 1 – Types of climate by extreme daily mean values from the current standard . 7
Table 2 – Types of climate by annual extreme values from the current standard . 7
Table 3 – Types of climate by absolute extreme value from the current standard . 8
Table 4 – Process phases and actions in the each phase . 11
Table 5 – Recommended climatic types . 14
Table 6 – Definitions for proposed climatic types (reference [6]) . 15
Table 7 – Types of climate by extreme daily mean values . 15
Table 8 – Types of climate by annual extreme values . 15
Table 9 – Types of climate by absolute extreme value . 16
Table 10 – Cross reference table between different climatic types . 17
Table B.1 – Data for polar climatic type . 25
Table B.2 – Data for cold climatic type . 26
Table B.3 – Data for temperate climatic type . 27
Table B.4 – Data for arid climatic type . 28

– 4 – TR 62130 © IEC:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CLIMATIC FIELD DATA INCLUDING VALIDATION

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. However, a
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data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC/TR 62130, which is a technical report, has been prepared by IEC technical committee
104: Environmental conditions, classification and methods of test.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
104/572/DTR 104/577/RVC
Full information on the voting for the approval of this technical report 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.

TR 62130 © IEC:2012(E) – 5 –
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site 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.
A bilingual version of this publication may be issued at a later date.

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
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– 6 – TR 62130 © IEC:2012(E)
CLIMATIC FIELD DATA INCLUDING VALIDATION

1 Scope
IEC/TR 62130, which is a technical report, provides traceable recommendations from
validated field data for updating IEC 60721-2-1.
2 Normative references
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.
IEC 60721-1:1982, Classification of environmental conditions – Part 1: Environmental
parameters and their severities
IEC 60721-2-1:1982, Classification of environmental conditions – Part 2-1: Environmental
conditions appearing in nature – Temperature and humidity
Amendment 1:1987
3 Current IEC 60721-2-1 standard dealing with temperature and humidity
IEC 60721-2-1:1982 and its Amendment 1 (1987) give maps of climatic types with the
following parameters:
– mean value of the annual extreme daily mean values of temperature, humidity and highest
temperature with RH < 95 %;
– mean value of the annual extreme values of temperature, humidity and highest
temperature with RH ≥ 95 %;
– absolute extreme values of temperature, humidity and highest temperature with
RH ≥ 95 %.
Values of parameters and maps of statistical open-air climates in the geographical areas of
the world are given in Tables 1 to 3, and in Figures 1 and 2, respectively.

TR 62130 © IEC:2012(E) – 7 –
Table 1 – Types of climate by extreme daily mean values from the current standard
Mean value of the annual extreme daily mean values
of temperature and humidity
Low temperature High temperature Highest Highest absolute
Type of climate
temperature with humidity
RH ≥ 95 %
–3
°C °C °C
g × m
Extremely cold
–55 +26 +18 14
(except Central Antarctic)
Cold –45 +25 +13 12
Cold temperate –29 +29 +18 15
Warm temperate –15 +30 +20 17
Warm dry –10 +35 +23 20
Mild warm dry 0 +35 +24 22
Extremely warm dry +8 +43 +26 24
Warm damp +12 +35 +28 27
Warm damp, equable +17 +33 +31 30

Table 2 – Types of climate by annual extreme values from the current standard
Mean value of the annual extreme values
of temperature and humidity
Low High temperature Highest Highest absolute
Type of climate
temperature temperature with humidity
RH ≥ 95 %
–3
°C °C °C
g × m
Extremely cold
–65 +32 +20 17
(except Central Antarctic)
Cold –50 +32 +20 18
Cold temperate –33 +34 +23 20
Warm temperate –20 +35 +25 22
Warm dry –20 +40 +27 24
Mild warm dry –5 +40 +27 25
Extremely warm dry +3 +55 +28 27
Warm damp +5 +40 +31 30
Warm damp, equable +13 +35 +33 36

– 8 – TR 62130 © IEC:2012(E)
Table 3 – Types of climate by absolute extreme value from the current standard
Absolute extreme values
of temperature and humidity
Low High Highest Highest
Type of climate
temperature temperature temperature absolute
humidity
with RH ≥ 95 %
–3
°C °C °C
g × m
Extremely cold
–75 +40 +24 20
(except Central Antarctic)
Cold –60 +40 +27 22
Cold temperate –45 +40 +28 25
Warm temperate –30 +40 +28 25
Warm dry –30 +45 +30 27
Mild warm dry –15 +45 +31 30
Extremely warm dry –10 +60 +31 30
Warm damp 0 +45 +35 36
Warm damp, equable +4 +40 +37 40

IEC  1696/12
Figure 1 – Current map showing types of climate and their combinations

TR 62130 © IEC:2012(E) – 9 –
IEC  1697/12
Figure 2 – Current map showing the groups of climates
4 Task 1
The purpose of task 1 is to collect field data and to collate the validated data into a form
suitable for comparison with IEC 60721-2-1.
The field data was collected from two independent main sources. The data was organized,
arranged and analysed using a spreadsheet (Figure 3 and attachment). Annex A shows the
graphical data based on the data in Annex B. The validation process is described in details in
Clauses 5 and 6.
– 10 – TR 62130 © IEC:2012(E)
IEC  1698/12
Figure 3 – Screenshot from data analysis spreadsheet
5 Task 2
5.1 General
The purpose of task 2 is to ensure traceability of the comparison process.
5.2 Description of the comparison process
The high level process for updating IEC 60721-2 standards [1] is given in Figure 4. The
process has four main phases. The traceability between measured field data and values given
in the standard can be achieved by following this process. Detailed actions that were carried
out in each phase are given in Table 4. To ensure full traceability, it is crucial that all process
phases are documented and that the sources used can be found in the future.
In Phase 1, it is decided what standards will be reviewed and possibly updated. In Phase 2,
data sources are identified and data is collected with certain attributes. Analysis of data and
comparison to current values in the particular standard takes place in Phase 3. The data
comparison process is a key phase to ensure traceability of data and it can vary depending on
which parameters are in question. This phase is described in detail in Clause 6. The output of
the process (Phase 4) helps the maintenance team decide how a standard should be updated
and/or modified. The decision can also be a proposal to leave the parameters in the standard
as they are.
___________
References in square brackets refer to the Bibliography.

TR 62130 © IEC:2012(E) – 11 –
Phase 1 – Phase 2 – Phase 3 – Phase 4 –
Decide standards Identify data Comparison Make decision
and parameters sources and other process to ensure about change
to be reviewed references traceability of data needs

IEC  1699/12
Figure 4 – High level comparison process to ensure traceability of data
Table 4 – Process phases and actions in the each phase
Process phase Actions
Phase 1. Decide what standard Decide what standard will be reviewed
and what parameters will be
Decide what parameters will be reviewed
reviewed
Document decisions
Phase 2. Identify data sources Identify data and other input sources of parameters
Identify the name of data source organization (universities, meteorological
offices or cor
...