Why Do Electrical Control Panels Need a Dedicated AC Unit?
Industrial control panels are the heart and soul of every manufacturing or production line. At the same time, this equipment is one of the most critical and technically sophisticated parts of any machine. Inside industrial control panels, various electronic instruments are located that monitor and regulate the continuous operation of machines. At the same time, such devices are exposed to a significant rise in temperatures due to their constant functioning.
Therefore, to avoid unplanned interruptions in the work of machines or technological equipment due to overheating, it is necessary to install air-to-air heat exchangers (enclosure air conditioners). Below are reasons why an AC is beneficial to your electrical control panels and the advantages such devices bring.
This text describes why it is so important to equip electrical control panels with air-to-air heat exchangers.
1. Preventing Thermal Overheating
Modern control panels are usually filled with a large amount of sensitive electronics such as VFDs, PLCs, servos, and power supplies. All of these generate considerable amounts of heat when processing and converting power or signals.
Left trapped in a sealed metal box, the temperature inside can quickly rise to 45-50°C and even higher. Such conditions will cause electronics to overheat and fail much sooner than their rated operating temperature of around 30-35°C. A panel AC unit actively cools the electronics by removing heat from the cabinet and thus maintaining an optimal operating temperature.
2. Protection from Airborne Contaminants (Dust & Oil Mist)
In a factory setting the ambient air is often filled with dust, dirt, oil mist, and humidity. An open mesh vent or even a regular exhaust fan are poor choices for cooling your panel.
While an exhaust fan will draw in cooler air from the surrounding environment, it also draws in all the unwanted airborne contaminants.
Dust will gather on the circuit boards as an insulating layer, causing higher operating temperatures or, in the worst case, causing shorted circuits. By using an AC unit, you are creating a closed-loop cooling system.
The air inside your enclosure is being cooled and circulated without introducing any of the unwanted contaminants found in the ambient air.
3. Removing Moisture and Humidity
Humidity in the electrical panel can cause condensation on the live parts of the electrical equipment. Such changes in the characteristics of the insulating coverings lead to immediate equipment failure due to corrosion and short circuits.
Meanwhile, the air conditioner, by cooling the air inside the enclosure, removes moisture from it. Thus, the integrity of the enclosed equipment can be preserved because the air conditioner will remove dampness from the inside and expel it outside with its own exhaust.
4. Increased Resources of the Equipment
The impact of temperature on electronics is very significant: for many semiconductor devices, an increase in temperature by 10 degrees Celsius leads to a reduction in their operational capability by 50%. By keeping the temperature inside the enclosure at a constant temperature, the panel air conditioner extends the life of expensive drives and PLCs, allowing their maximum use and thus realizing the greatest benefit for the owner.
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