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  • IEC 61643-21 Ed. 1.0 b:2000

IEC 61643-21 Ed. 1.0 b:2000

Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods

International Electrotechnical Commission , 09/29/2000

Publisher: IEC

File Format: PDF

$183.00$367.00


Standard By:International Electrotechnical Commission , 09/29/2000
Published:09/29/2000
Pages:111
File Size:1 file , 760 KB
Language:English, French
Note:This product is unavailable in Ukraine, Russia, Belarus
Is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these SPDs is to protect modern electronic equipment connected to telecommunications and signalling networks with nominal system voltags up to 1 000 V (r.m.s.) a.c. and 1 500 V d.c. The contents of the corrigendum of March 2001 have been included in this copy.

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