![]() In any of these cases, the sensitive electrical equipment inside the control panel must be isolated completely from the environment with a “closed-loop” cooling system to prevent moisture, dust, metallic particles, or corrosive chemicals from ever reaching the components. The panel will be located close to a body of water or a water treatment plant, or will be exposed to splashing liquids.The environment surrounding the panel contains copious amounts of dust, fibers, or chemicals in the air.The panel is located indoors in a high-heat environment, near ovens or furnaces.The panel is located outdoors, where it will be exposed to direct sunlight, blowing rain, or ice.The electrical equipment in the control panel generates a large amount of heat.In fact, another type of cooling system will be required if one or more of the following conditions apply: However, cooling fans have some limitations.įor example, in environments with large amounts of particulate matter in the air, such as paper mills or cement plants, the particles will tend to block the airflow through the fan filters, requiring frequent maintenance and reducing the cooling capacity of the fans. One way to increase the amount of cooling is to add a filtered fan package to the control panel, which will increase the convective airflow through the enclosure, while providing some protection from dust or particulates in the ambient air.ĭepending on the amount of heat that needs to be dissipated, this can be the most simple, cost-effective method of maintaining optimal temperatures inside the panel. However, in many cases it is necessary to provide additional cooling systems in order to prevent overheating of the components and protect the delicate electrical equipment. Some natural cooling will occur when excess heat inside the control panel is transferred through the panel walls to the outside air, or through convection currents as heated air rises and escapes from vents near the top of the enclosure. ![]() ![]() When the temperature in a control panel rises above the manufacturer’s rated temperature for one or more of the components, there is a danger of decreased efficiency, damage to equipment, increased maintenance and replacement cost, loss of power, and ultimately failure of the system. Industrial control panels may include PLCs, VFDs, contactors, fuses, switches, transformers, timers, and other components, each of which operates within an optimal temperature range. What You Need to Know About Cooling Control Panel EnclosuresĬontrol panels are designed to house and protect electrical components for powering and controlling industrial, HVAC, and other equipment.
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