GB/T 18039.9-2013 电磁兼容 环境 公用中压供电系统低频传导骚扰及信号传输的兼容水平 Electromagnetic compatibility—Environment—Compatibility levels for low-frequency conducted disturbances and signaling in public medium-voltage power supply systems
Electromagnetic compatibility—Environment—Compatibility levels for low-frequency conducted disturbances and signaling in public medium-voltage power supply systems