Where Is a NEMA Type 4X Used?

A NEMA 4X enclosure is designed to resist penetration by water sprays and be dust-proof and corrosion-resistant. It is the ideal electrical enclosure for applications that are subject to corrosion, wash down and heavy weathering. Enclosure cooling systems fitted to such enclosures should have the same NEMA type rating.

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7 Reasons Electrical Enclosure Cooling Is Necessary

The use of electrical enclosure cooling systems has grown exponentially in the last few decades. Reasons for this growth include higher cabinet heat loads and the use of more sophisticated electrical drives and equipment. Concurrently, there has been a desire to reduce costs and this has led to the placement of electrical enclosures closer to the plant and equipment, thus exposing these enclosures to harsher environments.

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How Air to Air Heat Exchangers Efficiently Cool Electrical Enclosures

An air to air heat exchanger is an efficient way to remove heat from electrical enclosures. Apart from two fans, there are no moving parts, and energy consumption is negligible. By utilizing innovative heat pipe technology, air to air heat exchangers are able to transfer heat from inside the enclosure to the external air and are suitable for use in sealed NEMA 12, 4, and 4X enclosures.

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When Is Enclosure Cooling Needed to Protect Electrical Equipment from Overheating?

Although modern electrical equipment is robust, the widespread use of power components has increased the need for controlling the temperature of electrical enclosures. Specifications vary but electrical equipment manufacturers generally recommend that enclosure temperatures be kept below 95 ºF (35 ºC) to protect sensitive components.

It is possible to manage enclosure temperatures through the use of natural ventilation, but there are at least three situations where enclosure cooling requires an active solution to protect equipment from overheating.

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What to Do if Your Enclosure Air Conditioner Overheats or Isn't Cooling

If your enclosure air conditioner is not performing optimally, you need to attend to it promptly before the electrical enclosure overheats, potentially resulting in equipment failure and loss in production. The fault may be minor and easily identified. Before calling for specialist support, have your maintenance staff perform these simple checks because they may be able to repair the air conditioner themselves.

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How to Calculate Heat Dissipation for VFDs

When you're building a panel containing Variable Frequency Drives (VFDs), it's easy to underestimate their contribution toward the electrical enclosure's heat load. Part of the problem arises from the paucity of information supplied by manufacturers who don't always publish power dissipation or efficiency information in brochures.

VFDs generate a significant amount of heat and unless the heat is removed through the use of enclosure cooling, the drives can overheat and trip, causing plant outages. Here is a simple guide to calculate the heat dissipation requirements for VFDs.

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What to Consider When Selecting Enclosure Cooling for NEMA Type 12

NEMA Type 12 enclosures are well suited for indoor use. However, they often require some form of closed loop enclosure cooling to keep their internal temperatures within component recommended operating temperatures, except in instances when the heat load is very low. Their level of sealing is suited for use in dirty or dusty environments although they are not suited for situations where there is excessive water present. There are a number of cooling options to choose from for NEMA 12 enclosures.

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8 Steps to Selecting an Enclosure Cooling Supplier for Control Panels

Modern power equipment, while robust, has an Achilles heel because it is sensitive to heat and will malfunction and fail if heat rises above recommended operating levels. This necessitates careful enclosure design and the provision of robust enclosure cooling solutions. Here are 8 steps you can take to select the right enclosure cooling supplier.

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Why Planning Enclosure Thermal Management before Prototype Phase Is Critical

The ideal time to factor in thermal management of the enclosure is during the initial design stage before equipment is purchased. Here are some considerations to take before the prototype phase.

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The Growing Demand of Thermal Management in Telecommunications

Although it's well understood that the effective thermal management of telecommunications equipment is crucial to ensure long life and reliable operation, designers are faced with many challenges as they attempt to control costs yet provide an effective service. This has led to the decentralization of telecommunications equipment away from protected environments and an increase in the use of smaller enclosures that are often located outdoors and in remote locations.

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