How to maintain EMC stability in an EPS vibration environment?

EPS (Expanded Power Supply) components may be subjected to vibration and shock during transportation, installation, or operation, which can affect their long-term EMC performance reliability. Measures to maintain stability include:

1. Mechanical reinforcement: Securely mechanically fasten all EMC-related components. For example, use screws with spring washers or threadlocker to secure common-mode inductors and filter modules; use clips or adhesives to secure large capacitors.

2. Connection reliability: Ensure all grounding connections (grounding busbars, grounding terminals), shielding overlaps, and cable joints do not loosen under vibration. Using crimped, soldered, or locking connectors is superior to screw crimping alone.

3. PCB reinforcement: For PCBs containing large magnetic components or capacitors, add support points or use adhesives (such as red glue) to reinforce components and prevent solder joints from cracking due to vibration fatigue.

4. Cable securing: Internal and external cables should be reliably secured using cable ties and clamps to avoid insulation damage or noise caused by vibration friction.

5. Material fatigue resistance: Select shielding padding materials with good elasticity and fatigue resistance. Vibration and shock testing should be conducted during the design phase to expose potential problems.