NFC 51 115:1969被替代
Rotating Electrical Machines - Degrees Of Protection By Enclosures For Rotating Electrical Machines
出版：Association Francaise de Normalisation
专家解读视频
69
BS 4999-105(1988) : 1988 - Identical
EN 60034-5 : 2001 AMD 1 2007 - Identical
VDE 0530-5 : 2007 - Identical
BS 4999-105(1988) : 1988 - Identical
VDE 0530-5:2007 - Identical
IEC 60034-5 Ed. 4.1 - Equivalent
BS 4999-105:1988 - Identical
