Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz -- Part 2-3: Immunity requirements for mains communications equipment and systems operating in the range of frequencies 3 kHz to 95 kHz and intended for use by electricity suppliers and distributors
频率范围为3 kHz至148.5 kHz的低压电气装置上的信号第2-3部分:供电力供应商和分销商使用的频率范围为3 kHz至95 kHz的主通信设备和系统的抗扰度要求