通用变频器在户外高温环境下可靠运行的设计方案

Design scheme of general inverter's reliable operation at high ambient temperature

针对通用变频器户外运行环境温度受限的问题,对普通IP20防护等级变频器外加IP54防护等级的电控拒体的设计方案进行试验研究,当选用电控柜体两侧出风方式,并在变频器的顶部与电控柜体顶部之间增加强制排风导风筒和散热风扇时,可以满足IP20变频器户外高温环境下的应用,降低变频器的使用成本。

According to the issue of general inverter＇s operation limited by the ambient temperature,the experimental study is conducted based on the design scheme of the general inverter with IP20 protection class combined with the cabinet of IP54 protection class.When the air outlet direction is sideward,the IP20 converter can be used at high ambient temperature environment if install the forced air exhaust duct and the cooling fans between the top of inverter and electronic control cabinet.This can also reduce the cost of inverter.