CEI EN 61643-21/A1:2011
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Hardcopy , PDF
English - Italian
01-01-2011
11-03-2026
This variant introduces changes to the articles from the first to the sixth and adds Annexes D and E.
| DocumentType |
Amendment
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| Pages |
0
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| ProductNote |
THIS STANDARD IS IDENTICAL:EN 61643-21/A1:2009 THIS STANDARD ALSO REFERS:ITU K.30,ITU K.65
|
| PublisherName |
Comitato Elettrotecnico Italiano
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| Status |
Superseded
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| SupersededBy |
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