Have you ever walked through a production facility and actually looked at and in electrical cabinets? If you did, you would find very few that are identical and even ones that are similar sizes; the internals can be drastically different. When I was in the metal cutting industry customizing, installing, and servicing CNC machines, the same model machine may have different drives for an extra option and can easily add additional heat load to the panel. Bring this up because it’s time we talk about how the dimensions of a panel are not enough to select the level of cooling needed.
Some manufacturers of air movers and “traditional” enclosure cooling method devices will use merely the dimensions of a panel to estimate a heat load and then treat the panel for the worst case scenario. Sometimes it may even be a worst-case scenario for that size of panel. I’m here to tell you from experience that’s not always the best option. This is why we like to have additional information, an “inside man” on the panel, if you will. We want to know exactly what kind of air temperatures we are seeing so that we can use that information combined with some math to determine an acceptable heat load that needs to be dissipated.
The information permits us to size the Cabinet Cooler system for your exact panel; even if you have two that are the same size but one of them has some additional drives or circuits running through it, we can account for that. The reason it is essential to size each panel that has anything different in it is that all devices have some level of efficiency. So the power they consume isn’t 100% converted into their intended function. This results in some level of heat generation. That means different internal components, and different heat loads, easy as that.
This is one of the reasons we took so much care when designing and refining our Cabinet Cooler Calculator. Each variable will impact the heat load and model selection for the Cabinet Cooler System. Some major factors, such as solar heat load and cabinet color, are even accounted for when panels are located outside. We even account for existing fans that will need to be removed to seal the panel. This is because all of these factors directly affect the amount of cooling needed.
Suppose you are looking to cool down some electrical cabinets throughout your facility and want to fully understand what heat load you may need to dissipate and maintain a safe operating environment; check out our Cabinet Cooler Calculator, or contact an Application Engineer today. In that case, we can size the system while we are talking on the phone with you.