How to improve the conduction immunity (CS) of a power line carrier PLC?

Improving conducted immunity (CS) in power line carrier PLCs requires optimized filtering and grounding. A high-performance EMI filter, including a common-mode inductor CML4532A-510T and safety capacitors, should be deployed at the power input. Isolation transformers or optocouplers should be used for the signal interface. The grounding system should have low impedance and employ a star grounding configuration. Filter parameters should be optimized through simulation analysis of the CS frequency point. In actual testing, a CS test of 10V/m should be performed according to IEC61000-4-6 standard, with a frequency range of 150kHz-80MHz; the system should exhibit no abnormalities. Improving conducted immunity allows the system to operate stably in strong electromagnetic environments, making it suitable for industrial sites.