| Publication CODE |
Title |
| NBN EN IEC 60721-3-9:2024 (2024-05) |
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS - PART 3-9: CLASSIFICATION OF GROUPS OF ENVIRONMENTAL PARAMETERS AND THEIR SEVERITIES - MICROCLIMATES INSIDE PRODUCTS |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
14.00 €
|
3. |
Description
IEC 60721-3-9:2024 classifies groups of microclimatic conditions, to which components (basic parts, assemblies, built-in units) can be subjected inside products, which are used under the climatic conditions as classified in IEC 60721-3-3 and IEC 60721-3-4.
This second edition cancels and replaces the first edition published in 1993, Amendment 1:1994 and Corrigendum 1:1995. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 2 has been updated;
b) Clause 4 has been re-edited and simplified;
c) Annex A has been revised and updated;
d) a new Annex B has been added and gives the origin of the constitutional diagram for humid air, which is the basis of drawing the climatogram for a microclimate.
|
| Class |
C
|
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
|
|
|
| Committee |
CLC/SR 104
Environmental conditions, classification and methods of test
|
| BEC Approval |
2024-05-16 |
| NBN Approval |
2024-05-21 |
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2024-05-16 |
| Date of announcement (d.o.a.) |
2024-08-16 |
| Date of publication (d.o.p.) |
2025-02-16 |
| Date of withdrawal former edition (d.o.w.) |
2027-05-16 |
| IEC file modification date |
2024-05-17 |
|
