Overheat of switchgear is the key factor to threat its normal operation. It is necessary to accurately calculate the temperature distribution of switchgear. In this paper,the accurately 3-D finite element model of switchgear is established by Solidworks,and the temperature field and fluid field of switchgear are calculated based on Icepak.Considering the factors of air convection cooling and forced air cooling,the temperature of the complex model is solved accurately by controlling the size and shape of the...