DIN EN 60335-2-49-2013
家用和类似用途电器. 安全性. 第2-49部分:商用电热食品和陶瓷餐具保温器的特殊要求 (IEC 60335-2-49-2002+A1-2008); 德文版本EN 60335-2-49-2003+Cor. -2007+A1-2008+A11-2012
Household and similar electrical appliances - Safety - Part 2-49: Particular requirements for commercial electric appliances for keeping food and crockery warm (IEC 60335-2-49:2002 + A1:2008); German version EN 60335-2-49:2003 + Cor. :2007 + A1:2008 + A11