What is the impact of high altitudes on electrical equipment?
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What are the differences between electrical complete sets of equipment for high altitudes and those for areas below 1,000 meters, and what are the requirements for selection? Especially components, frequency converters, etc
In simple terms, as the altitude increases, the specific humidity in the air rises, which leads to a decline in the external insulation performance of electrical equipment and an increase in temperature (affecting the conductivity of the conductors). This results in a deterioration of the overall performance of the electrical equipment and can also accelerate its aging. When making a selection, just pay attention to the altitude at which it will be used; many manufacturers now provide models designed for high altitudes in their samples.
The effects of high-altitude conditions on the characteristics of low-voltage electrical equipment are as follows: 1. At high altitudes, temperatures are low; this results in a significant increase in the temperature rise of electrical equipment in outdoor environments, but not in indoor environments. 1. The rated capacity needs to be reduced. 2. At high altitudes, the air density is low, which reduces the insulation strength. 3. Thermal trip elements exhibit certain deviations in terms of heat dissipation in high-altitude areas. 4. In high-altitude regions, under normal load conditions, the ability of low-voltage electrical devices to switch on and off short-circuit currents, as well as their mechanical and electrical lifespan, are all reduced to varying degrees ~! :)