EN IEC 60721-3-3:2019/prA1:2025

SLOVENSKI STANDARD
01-maj-2025
Klasifikacija okoljskih pogojev - 3-3. del: Klasifikacija skupin okoljskih parametrov
in njihove resnosti - Stacionarna uporaba na lokacijah, zaščitenih pred
vremenskimi vplivi - Dopolnilo A1
Amendment 1 - Classification of environmental conditions - Part 3-3: Classification of
groups of environmental parameters and their severities - Stationary use at
weatherprotected locations
Classification des conditions d'environnement - Partie 3-3: Classification des
groupements des agents d'environnement et de leurs sévérités - Utilisation à poste fixe,
protégé contre les intempéries
Ta slovenski standard je istoveten z: EN IEC 60721-3-3:2019/prA1:2025
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

104/1091/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60721-3-3/AMD1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-02-28 2025-05-23
SUPERSEDES DOCUMENTS:
104/1064/CD, 104/1083/CC
IEC TC 104 : ENVIRONMENTAL CONDITIONS, CLASSIFICATION AND METHODS OF TEST
SECRETARIAT: SECRETARY:
Sweden Mr Joakim Grafström
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 9,SC 17C,TC 22,SC 22G,SC 23J,SC 37B,TC 38,TC
44,SC 48D,TC 57,TC 82,TC 85,SC 86A,TC 94,TC 95,TC
97,TC 105
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Amendment 1 - Classification of environmental conditions - Part 3-3: Classification of groups of
environmental parameters and their severities - Stationary use at weatherprotected locations

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
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IEC CDV 60721-3-3 A1 © IEC 2025 2 104/1091/CDV
1 Proposed Amendment of IEC 60721-3-3:2019 Classification of environmental conditions - Part
2 3-3: Classification of groups of environmental parameters and their severities - Stationary use
3 at weatherprotected locations
4 Replace the existing sub clause 5.5 with the following text;
5 5.5 Chemically active substances (C)
6 The contamination of the natural atmosphere is mainly caused by chemical emissions from industrial
7 activities, motor-driven vehicles, and heating systems. A further chemical influence is caused by
8 aerosols of sea and road salts. Contamination may affect the function and materials of products.
9 A categorization of these substances and their allowed concentrations may either be based on
10 ISO 9223 or on the classification found in Annex C. Both categorizations have a different approach
11 and application background. Depending on the application background, the appropriate categorization
12 has to be selected.
14 Replace the existing sub clause 5.7 with the following text;
15 5.7 Mechanical conditions (M)
16 Mechanical conditions relate to the levels of vibration and shock that may exist at the location, for
17 example as a result of normal operations, nearby vehicular movement. These conditions are specified
18 in Table 5 and Figures 1, 2 and 3. See Annex B for the definition of seismic environment.
19 – 3M10 applies to locations experiencing insignificant levels of vibration and shock.
20 – 3M11 applies to locations experiencing low levels of vibration and insignificant levels of shock,
21 such as those transmitted from air conditioning, machines or passing vehicles in the vicinity.
22 – 3M12 applies to locations experiencing moderate levels of vibration and shock, such as those
23 close to machinery and conveyor belts.
24 – 3M13 applies to locations experiencing high levels of vibration and shock, such as those close to
25 or on heavy machinery.
26 – 3M14 applies to locations experiencing extremely high levels of vibration and shock, such as those
27 close to or on machinery such power hammers.
29 Delete the whole of table 5 and all figures and replace them with the following tables and figures;
IEC CDV 60721-3-3 A1 © IEC 2025 3 104/1091/CDV
31 Table 5 − Classification of mechanical conditions
Class
Environmental parameter Unit
3M10 3M11 3M12 3M13 3M14
1)
a) Stationary vibration, sinusoidal:
Displacement amplitude mm 7 - 15 -
- 20 - 50
Acceleration amplitude No No No
m/s
Frequency range Hz 2 to 9 9 to 200 2 to 9 9 to 200
2)
b) Stationary vibration, random:
2 2
Acceleration power (m/s ) /
0,01 0,1 3 1 10 5
spectral density Hz
No
200 to 200 to
5 to 200 5 to 200 5 to 200
Frequency range Hz 5 to 200
2000 2000
3)
c) Non-stationary vibration including shock:
Shock Figure 3 Curve 1 Figure 3 Curve 2 Figure 3 Curve 2
(equivalent to a (equivalent to a (equivalent to a
half sine pulse half sine pulse of half sine pulse of
No No
2 2 2
of 20 m/s and 250 m/s and 6 ms 250 m/s and
11 ms duration) duration) 6 ms duration)
1)
Vibration generated by rotating
...