Why Thermal Management is Critical
Excessive heat is the number one killer of sensitive electronic components like PLCs and VFDs. In a UL 508A certified shop, we don’t just build panels; we ensure they are engineered to last.
1. Calculating the Heat Load
To determine the cooling required, you must first calculate the total heat dissipation ($P_{loss}$) of all components inside the enclosure. The formula is: $P_{total} = sum P_{components}$.
2. Active vs. Passive Cooling
If the ambient temperature is lower than the desired internal temperature, filtered fans may suffice. However, in many Quebec manufacturing environments where dust or humidity is high, a Closed-Loop Air Conditioner is necessary to maintain NEMA 4 or 4X integrity.
3. Placement of Components
Hot components like VFDs and power supplies should be placed near the top or near exhaust vents to leverage natural convection.
Conclusion
Need help with your panel design? Aidtech provides full thermal analysis for every custom build. Contact us today.