Passive EMC grounding can be done with the Woertz shielding terminals. Made of stainless steel, this series comes with a spring and screw for a more secure connection. Shielding terminals ground to a strut rail. If separate grounding is needed, the strut rail can be isolated from the back panel with rail holders made of plastic (No. 4048) and a separate ground terminal used (see picture). These shielding terminals are for high-temperature variations and vibration and come in six sizes ranging from 8mm – 48mm in diameter
Passive EMC grounding in a drive control panel (typically VFD, servo drive, or soft starter panels) is used when the goal is to control high-frequency electromagnetic noise without allowing significant current flow through the grounding system, and without relying on active filtering components. It is a fundamental part of EMC-compliant panel design.
