Can a power supply operate at a high altitude?

In summary, whenever an application requires that a power supply must operate at altitudes above 2,000 meters (6,562 feet), always check with the manufacturer to determine if this is acceptable, or if an alternate model that is designed for higher altitudes is required.

What is a high voltage power supply?

Voltages, steady-state or repeated transients higher than 327V are referred as high voltages. Power supplies routinely have 240-265 VAC and 380 or more VDC internally, as well as high-frequency high voltage AC energy. Thus, considerations for breakdown and processing high voltage must be considered for use in the end application.

How does altitude affect power electronics design?

Let’s review the physics involved in power electronics design. As altitude is increased, the air is less dense. The cooling capacity of the air decreases as altitude increases (decreased density) making heat removal via air less effective. Additionally, according to Paschen's Law the dielectric properties of air change with altitude.

What is the minimum storage altitude for industrial and medical supplies?

Storage (non-operational) altitude for industrial and medical supplies is generally limited by the lowest temperature rating of the product; in most cases 8000 meters is typical. In the case of equipment manufactured or sold in China, the standard GB 4943.1-2011 assumes your product must be suitable for use at altitudes up to 5000 m.

Does advanced energy offer a fanless power supply?

Advanced Energy's modular, fanless power supply, the CoolX600 series, takes into account the specific needs for demanding applications that must maintain high-reliability and efficiency at high altitudes.

Why does air at high altitude increase heat transfer capacity?

Air at high altitude is less dense than air at sea level, reducing its convective capability and overall heat transfer capacity. Therefore, all electronics that rely on natural or forced convection to dissipate heat will experience increased air and component temperature rise for the same amount of power at higher altitudes.