No one needs to be told how much time, effort and of course money accompanies the systems needed to keep a business running smoothly. Ensuring that pricey electrical equipment, servers and security systems that drive production remain operational is no longer a secondary task. It is a critical business function, and even a matter of public and employee safety. Continue reading →
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, so it is widely accepted that electrical enclosure temperatures are kept below 100 ºF (37 ºC) to limit the possibility of unpredictable behavior or failure that could lead to a plant shut-down.
The use of electrical equipment has revolutionized the electrical industry by reducing costs and making sophisticated electrical control systems practical. Examples include variable frequency drives, PLCs, and electrically controlled circuit breakers. Continue reading →
If you are a project or maintenance engineer needing to purchase enclosure cooling systems, it is important that you spend time preparing a detailed specification before initiating an inquiry. This relatively simple task will ensure you get a cooling system that will meet your needs with appropriate approvals. Here are some tips for writing a specification for enclosure cooling systems. Continue reading →
Electrical control panels, working in busy industrial applications, serve as the nerve center for many businesses. They are a critical piece of equipment that can ring up some expensive downtime if they are not monitored, maintained and cooled properly.
Most of the enclosures that house electrical control panels find themselves in hot and dusty areas, two potentially damaging factors that must be mitigated when choosing to employ the right enclosure cooling techniques.
Electrical components in an environment containing chemical vapors and dusts are subject to corrosion, and as a result equipment malfunction or failure is more prone to happen. Even gold and silver plated connectors and contacts are affected as porosity allows contaminants, especially in high relative humidity conditions, to attack the underlying metals. Continue reading →
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.
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.
For the electrical components within the enclosure, the formation of corrosion can reduce electrical continuity and the lifespan of the electrical connections leading to short circuits and breakdowns.Continue reading →
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.Continue reading →