测量、控制和实验室电气设备的安全要求 第11部分：能测量电网电源电压的家用和专业用手持万用表和其他仪表的特殊要求

Safety requirements for electrical equipment for measurement, control, and laboratory use - Part X: Particular requirements for hand-heald multimeters and other meters, for domestic and professional use, capable of measuring mains voltage