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Main page>23/30478750 DC BS EN IEC 61643-21. Low voltage surge protective devices Part 21. Surge protective devices connected to telecommunications and signalling networks. Requirements and testing methods
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sklademVydáno: 2023-08-15
23/30478750 DC BS EN IEC 61643-21. Low voltage surge protective devices Part 21. Surge protective devices connected to telecommunications and signalling networks. Requirements and testing methods

23/30478750 DC

BS EN IEC 61643-21. Low voltage surge protective devices Part 21. Surge protective devices connected to telecommunications and signalling networks. Requirements and testing methods

CURRENCY
23.18 €
Označení normy:23/30478750 DC
Počet stran:87
Vydáno:2023-08-15
Status:Draft for Comment
Alternativní označení:BS EN IEC 61643-21
DESCRIPTION

23/30478750 DC


This standard 23/30478750 DC BS EN IEC 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
  • 29.240.10 Substations. Surge arresters

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