• Your shopping cart is empty!

  • 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


Published:29/09/2000

Pages:111

File Size:1 file , 760 KB

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.

More IEC standard pdf

IEC 60384-14-1 Ed. 3.0 b:2016

IEC 60384-14-1 Ed. 3.0 b:2016

Fixed capacitors for use in electronic equipment - Part 14-1: Blank detail specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains - Assessment level DZ

$47.00 $95.00

IEC 61158-6-26 Ed. 1.0 b:2019

IEC 61158-6-26 Ed. 1.0 b:2019

Industrial communication networks - Fieldbus specifications - Part 6-26: Application layer protocol specification - Type 26 elements

$256.00 $512.00

IEC 61167 Ed. 4.0 b Cor.1:2019

IEC 61167 Ed. 4.0 b Cor.1:2019

Corrigendum 1 - Metal halide lamps - Performance specification

$127.00 $254.41

IEC 60601-2-21 Ed. 3.0 b:2020

IEC 60601-2-21 Ed. 3.0 b:2020

Medical electrical equipment - Part 2-21: Particular requirementsfor the basic safety and essential performance of infant radiant warmers CONSOLIDATED EDITION

$139.00 $278.00