NEN EN IEC 61643-21 : 2001 AMD 2 2013
Current
Current
The latest, up-to-date edition.
LOW VOLTAGE SURGE PROTECTIVE DEVICES - PART 21: SURGE PROTECTIVE DEVICES CONNECTED TO TELECOMMUNICATIONS AND SIGNALLING NETWORKS - PERFORMANCE REQUIREMENTS AND TESTING METHODS
Published date
01-12-2013
Publisher
Applies to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages.
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