DIN EN 50065-4-6-2005 频率范围3KHz至148.5KHz的低压电气设备的信号传输.第4-6部分:低压退耦过滤器.相位耦合器
Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-6: Low voltage decoupling filters - Phase coupler; German version EN 50065-4-6:2004