How to seal the shielding at the power line inlet of a power line carrier PLC?

For sealing power line inputs in PLCs using power line carrier technology, filter connectors or shielding clips are required. The filter connectors incorporate a built-in π-type filter to suppress noise leakage. The shielding clips press the cable shielding layer 360 degrees to the housing, ensuring a low-impedance connection. Conductive gaskets or potting compound are used to fill gaps at the input to prevent electromagnetic leakage. For multiple cables, treat them separately to avoid coupling. During testing, radiated emission tests are performed, comparing the input before and after treatment; leakage should decrease by at least 15 dB. Sealing the input improves overall shielding effectiveness and ensures the system passes the radiated emission test.