How can a power line carrier PLC pass the ESD electrostatic discharge test?

For power line carrier PLCs to pass ESD electrostatic discharge (ESD) testing, ESD protection devices and optimized layout are required. A TVS diode array ESD0524P with a response time of less than 1ns and a clamping voltage of 5V should be deployed at external interfaces (power lines, communication ports). On the PCB layout, ESD devices should be placed close to the interfaces with short, straight leads. A low-impedance grounding system ensures rapid ESD discharge. The housing should be made of metal or conductive plastic with gaps less than 1mm. During testing, according to IEC 61000-4-2 standards, contact discharge ±8kV and air discharge ±15kV should be applied; the system should not restart or be damaged. Passing ESD testing improves product reliability and meets market access requirements.