IEC 61643-21:2000+AMD1:2008+AMD2:2012 CSV

FOREWORD
INTRODUCTION
1 General
2 Normative references
3 Definitions
4 Service and test conditions
5 Requirements
6 Type test
Annex A (informative) - Devices with current-limiting
        components only
Annex B (Void)
Annex C (Void)
Annex D (informative) - Measurement accuracy
Annex E (informative) - Determination of let-through
        current (I[p])
Annex F (informative) - Basic configurations for
        measuring U[p]
Annex G (informative) - Special resistibility in
        telecommunication systems
Bibliography

IEC 61643-21:2000+A1:2008+A2:2012 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. This consolidated version consists of the first edition (2000), its amendment 1 (2008) and amendment 2 (2012). Therefore, no need to order amendment in addition to this publication.