Does altitude affect electrical equipment?

In this article, we will explore the effects of altitude on electrical equipment based on our experience and discuss the key components that are susceptible to failure in high-altitude environments. At higher altitudes, the air density decreases, resulting in lower dielectric strength.

Does coolx work at 5000 m altitude?

Temperature deratings at altitude. The CoolX series of modular fanless power supplies (Figure 4) has been designed to exceed regulatory safety requirements at 5000 M for creepage and clearance. It not only works at that altitude, it also meets medical and industrial safety standards with margin at 5000-M 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.

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 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 cooling capacity?

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. The creapage and clearance of the power supply has to take this into account.