What are the effects of hot-swapping power line carrier PLCs on EMC?

The EMC impact of hot-swapping on power line carrier PLCs mainly consists of transient surges and contact jitter. Transient surges can reach hundreds of volts, requiring the deployment of TVS diodes (SMCJ24CA) at the interface for absorption. Contact jitter generates broadband noise, necessitating the addition of debouncing circuitry (such as RC filtering). Hot-swapping also causes ground potential transients; the use of isolated interfaces is recommended. Simulation analysis of hot-swapping transients optimizes the protection circuitry. In actual testing, 1000 hot-swapping cycles should result in no system damage and no EMC performance degradation. Controlling the impact of hot-swapping improves system maintainability and is suitable for scenarios requiring frequent module replacements.