BS EN 61643-21:2001+A2:2013現行
Low Voltage Surge Protective Devices - Part 21: Surge Protective Devices Connected To Telecommunications And Signalling Networks - Performance Requirements And Testing Methods
出版：British Standards Institution
專家解讀視頻
2001 + A2 2013 [31/05/2013]2001 + A1 2009 [31/01/2010]2001 [31/08/2001]
Supersedes 97/207928 DC. (06/2005) Supersedes 06/30147763 DC. (02/2010) 2001 Edition Re-Issued in May 2013 & incorporates AMD 2 2013. Supersedes 11/30248256 DC. (05/2013)
DIN EN 61643-21:2013 - Identical
SS EN 61643-21:2002 - Identical
DIN EN 61643-21 (2013-07) - Identical
SN EN 61643-21:2001 - Identical
NBN EN 61643-21:2002 - Identical
NF EN 61643-21:2001 - Identical
I.S. EN 61643-21:2001 - Identical
UNE EN 61643-21:2002 - Identical
