DIN EN 60335-2-28-2009
家用和类似用途电器.安全性.第2-28部分:缝纫机的特殊要求(修改的IEC 60335-2-28-2002+A1-2008)
Household and similar electrical appliances - Safety - Part 2-28: Particular requirements for sewing machines (IEC 60335-2-28:2002, modified + A1:2008); German version EN 60335-2-28:2003 + A1:2008