In industrial facilities, electronic equipment is frequently used for motor control and most machines are PLC controlled. This use of electronic equipment has increased electrical enclosure heat loads because of the high heat dissipation characteristics of electronic equipment. At the same time, electronic equipment is susceptible to malfunction if allowed to get too hot, […]
When Is the Ambient Temperature Too Hot to Rely on Air to Air Heat Exchangers for Enclosure Cooling?
When you are looking for an efficient method for enclosure cooling, a heat exchanger is a good solution for a few different reasons. Not only is a heat exchanger energy efficient, but it allows you to maintain a completely closed loop enclosure cooling solution. The way a heat exchanger operates is by employing a […]
When you require enclosure cooling for your sensitive electronic equipment, dealing with the outdoor elements can complicate things slightly. Without the constant ambient environment present as in most indoor facilities or the shelter provided by the building to shield the enclosure from precipitation and other outdoor elements, the enclosure can be subjected to much more […]
The pervasive use of electronics in control systems requires not only technical maintenance of functionality and software, but it raises the priority of temperature control inside electrical enclosures to the top of your to-do list.
Understanding the NEC Hazardous Location Option: Class 1, Div 2, Groups A, B, C, and D, for Enclosure Cooling Systems
The market for custom cabinet or enclosure air conditioners is growing as applications become more unique, such as pole mounted heavily loaded electrical cabinets, mobile equipment, and electrical control panels in dusty areas with intense solar radiation.
Unlike a residential cooling system, an enclosure air conditioner must accommodate special situations. The sometimes harsh environments where electrical enclosures are located make it necessary to ensure that the air conditioner protects the components inside beyond just cooling the cabinet. Some examples include:
Enclosure cooling systems are used for a broad range of applications in many types of industries. While every use of an enclosure air conditioner is important, some require unfailing reliability. When this is the case, certain solutions are used to ensure constant operation, including back-up power supplies and other redundant systems that prevent failure […]
The closed loop cooling cycle of an Air to Air Heat Exchanger makes it right for many applications where cooling solutions such as fans are unsuitable or when air conditioners are undesirable due to their larger size, higher noise levels and greater energy consumption.
When an enclosure air conditioner is located outdoors or in an environment that is not temperature controlled, it usually has to work harder in the summer months to maintain the desired internal temperature. Because it will be running more frequently than usual, it will need more regular maintenance to ensure proper operation.
Environmental and climate conditions can negatively affect electrical enclosures in several ways. Beside the negative effects of excessive heat, dust and dirt, and the formation of corrosion is an issue that can plague enclosures. Corrosion doesn’t form without a reason; excessive condensation is most often the primary contributor to the formation of corrosion within enclosures. […]
To the outsider, the food and beverage industry operates in a benign and clean environment. Although this assumption is largely true, it requires that facilities are rigorously cleaned and high standards of hygiene maintained. Cleaning processes include the use of chemical disinfectants and washdowns to prevent pathogens accumulating on any surface. Since the introduction of […]
Almost everyone involved in the maintenance of electrical enclosures has, at one time or another, faced problems with overheated electrical enclosures. In most instances, the obvious solution was to install or upgrade the cabinet cooling fan only to find that it didn’t work too well. Here are some reasons why the obvious solution may not […]
UL stands for Underwriters Laboratories in the United States, and the initials UL represent their mark of approval. UL has laboratories in several other countries, and in Canada their mark of approval is cUL. Underwriters Laboratories belongs to a group of nationally recognized testing laboratories; organizations that are accepted by authorities having jurisdiction (AHJs) in […]
Many of the requirements found in the National Electric Code (NFPA 70) specify that electrical equipment to be installed in non-hazardous industrial facilities, such as wastewater treatment plants, food processing plants, and data centers, must be listed or labeled by UL or another standards testing agency.
As electrical components become increasingly smaller and are more densely packed into electrical control panels, the amount of heat generated inside cabinets continues to increase. When considering heat dissipation in control panels it’s important to note what electrical equipment manufacturers specify as a maximum allowable operating temperature for their components. Maintaining a maximum internal control […]
Electric and electronic components used to operate equipment in the food and beverage industry, such as PLCs, motor starters, and VFDs are sensitive to moisture, contaminants, and excessive heat. In order to maintain efficiency and keep the plant running, these components must be kept at or below the manufacturer’s recommended safe operating temperature. At […]
Although cabinet cooling systems are robust and reliable, their efficacy depends upon their correct design, selection and installation. It is essential that cooling solutions are properly sized to the heat load and environmental considerations are taken into account. Unfortunately, this is not always the case, especially when equipment is replaced or upgraded by personnel […]
Selecting a new enclosure cooling solution or upgrading to another product can be challenging. This is especially true when looking for both a new enclosure cooling system and a reliable manufacturer of high quality products who provides excellent customer service and technical support.
There’s no getting around it. Critical electrical equipment housed in industrial control panels requires operating temperatures low enough to maintain efficiency and reliability. Without a properly sized cooling system, components such as VFDs, motor starters and PLCs are susceptible to reduced capacity, malfunctions or even premature failure, which can result in expensive downtime as […]
Enclosure cooling fans are one type of cooling device used to help keep heat producing electrical components from overheating. Fans are unique in that they are considered to be an open loop cooling system whereas air to air heat exchangers and enclosure air conditioners are closed loop systems.
Air conditioners are typically required when the enclosure’s heat load is over 300 Watts and in extreme ambient temperature conditions. Enclosure air conditioners are capable of working with high solar heat gains, in poorly ventilated areas and even in highly polluted areas. However, there may be constraints that prevent the use of a conventional […]
Outdoor electrical enclosures are exposed to an unusual combination of unpredictable environmental conditions that can cause electrical equipment to malfunction or even fail. Constant exposure to uncontrolled environments can wreak havoc on outdoor applications unless the proper cooling and protection requirements are met.
Mistakes can be costly when it comes to enclosures housing industrial control equipment. Not only are the individual components, including variable frequency drives (VFDs) transformers, and power supplies, expensive to repair or replace, but they control the equipment upon which the entire operation of the facility depends.
Wastewater treatment facilities present unique hazards to electrical enclosures. Extremely harsh conditions commonly present during wastewater treatment include highly corrosive liquids, gases and vapors such as chlorine, hydrogen peroxide, and ammonia. Some enclosures may also encounter salt spray and possibly even flammable gases generated by the decomposition of waste.