I.S. EN 61534-21:2006被替代
Powertrack Systems - Part 21: Particular Requirements for Powertrack Systems Intended for Wall and Ceiling Mounting
出版：National Standards Authority of Ireland
专家解读视频
Specifies the particular requirements and tests for PT systems intended for mounting on walls and/or ceiling.
SS EN 61534-21 Ed. 1 (2006) - Identical
UNE EN 61534-21:2007 - Identical
IEC 61534-21 Ed. 1.0 - Identical
NF EN 61534-21:2006 - Identical
NBN EN 61534-21:2006 - Identical
DIN EN 61534-21 (2007-06) - Identical
BS EN 61534-21:2006 - Identical
EN 61534-21:2014 - Identical
