GB/T 20626.1-2006

This standard specifies the general technical requirements for electrical and electronic products designed for use in plateau (high-altitude) environments, addressing factors such as reduced air pressure, temperature variations, and solar radiation. It is applied in the design, manufacturing, and testing of equipment intended for operation at altitudes above 1,000 meters, commonly in industries like power transmission, telecommunications, and transportation in mountainous regions. The standard ensures product reliability and safety under low-pressure conditions, guiding engineers and procurement professionals in selecting or developing equipment for high-altitude applications.