How to ensure shielding of gaps in industrial servo cabinets?

Gaps in server racks (such as door gaps, sheet metal joints, and ventilation holes) are the main pathways for high-frequency electromagnetic wave leakage. Ensuring electrical continuity is crucial for effective gap shielding. Audiotech's measures include: for gaps between the door and the rack, using conductive rubber gaskets or finger-shaped springs (silk), ensuring a certain amount of compression during installation (typically 20%-30%), and ensuring the contact surfaces are clean and free of paint. For sheet metal assembly joints, continuous welding (preferred) or conductive sealant is used. For gaps created during installation, metal mesh gaskets or conductive foam are used for filling. All shielding gaskets must make reliable contact with the rack's metal surface, with a contact impedance <10mΩ. In design, gap length should be minimized; long gaps can be divided into multiple small perforated arrays. A rack with complete gap treatment can achieve a shielding effectiveness (SE) of over 60dB in the 30MHz-1GHz range, effectively suppressing internal noise leakage and external interference intrusion.