DIN EN 60745-2-2-2011 手持式电动工具.安全性.第2-2部分:旋具和冲击式套筒扳手的详细要求(IEC 60745-2-2-2003,修订版本+ A1-2008).德文版本EN 60745-2-2-2010
Hand-held motor-operated electric tools - Safety - Part 2-2: Particular requirements for screwdrivers and impact wrenches (IEC 60745-2-2:2003, modified + A1:2008); German version EN 60745-2-2:2010