
Low Voltage Surge Protective Devices Part 21: Surge Protective Devices Connected to Telecommunications and Signalling Networks - Performance Requirements and Testing Methods (iec 61643-21:2000 (eqv) + Corrigendum Mar. 2001 (eqv))
出版:National Standards Authority of Ireland

专家解读视频
Pertains to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages.
IEC 61643-21 : 1.2 - Identical
SN EN 61643-21 : 2001 - Identical
EN 61643-21 : 2001 AMD 2 2013 - Identical
UNE EN 61643-21 : 2002 - Identical
NBN EN 61643-21 : 2002 AMD 2 2013 - Identical
NF EN 61643-21 : 2001 AMD 2 2013 - Identical
BS EN 61643-21 : 2001 - Identical
IEC 61643-21 : 1.2 - Identical
BS EN 61643-21 : 2001 - Identical
DIN EN 61643-21 : 2013 - Identical
SS EN 61643-21:2002 - Identical
DIN EN 61643-21:2013 - Identical
BS EN 61643-21:2001+A2:2013 - Identical
SN EN 61643-21:2001 - Identical
BS EN 61643-21:2001+A1:2009 - Identical
DIN EN 61643-21 (2002-03) - Identical
NBN EN 61643-21:2002 - Identical
NF EN 61643-21:2001 - Identical
IEC 61643-21 Ed. 1.0 - Identical
SS EN 61643-21 Ed. 1 (2002) - Identical
UNE EN 61643-21:2002 - Identical