IEC TR 61000-2-1-1990
电磁兼容性(EMC)第2部分:环境第1节:环境描述公共供电系统中低频传导干扰和信号的电磁环境
Electromagnetic compatibility (EMC) - Part 2: Environment - Section 1: Description of the environment - Electromagnetic environment for low-frequency conducted disturbances and signalling in public po