Hlavní stránka>22/30439450 DC BS EN 61643-21. Low voltage surge protective devices Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods
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sklademVydáno: 2022-03-30
22/30439450 DC
BS EN 61643-21. Low voltage surge protective devices Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods
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Označení normy:
22/30439450 DC
Počet stran:
84
Vydáno:
2022-03-30
Status:
Draft for Comment
Popis
22/30439450 DC
This standard 22/30439450 DC BS EN 61643-21. Low voltage surge protective devices is classified in these ICS categories:
33.040.30 Switching and signalling systems
29.120.50 Fuses and other overcurrent protection devices
