DIN EN 60670-22-2007 家用和类似固定电气装置的电气附件用机箱和外壳.第22部分:连接机箱和外壳的特殊要求
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 22: Particular requirements for connecting boxes and enclosures (IEC 60670-22:2003, modified); German version EN 60670-22:2006