Variable frequency power supplies cannot be treated as conventional medium-voltage electrical equipment; their indoor cooling air temperature must be fully considered. Manufacturers of variable frequency power supplies typically install centrifugal fans inside the cabinet or axial flow fans on the cabinet roof to force-air cool the power devices of rectifiers and inverters, and they have proposed the aforementioned environmental requirements. However, they have not provided suggestions on how to ensure these requirements. If there is no perfect air exchange system between indoor and outdoor spaces, the vast majority of the heat emitted by the variable frequency power supply will remain indoors, causing the environmental temperature of the variable frequency power supply to continuously rise, and completely altering the environmental conditions required for air cooling. 400HZ power supply
News Center Co., Ltd.





