1、 Composition of models and their representative significance

The product model and its meaning are as follows:

2、 Usage environment

The ventilation fan should operate reliably under the following conditions:

00001——atmospheric pressure80kPa～110kPa；

00002——Ambient temperature-20℃～+40℃；

00003——Standard oxygen content in the air:21% (volume ratio);

00004——The relative humidity of the surrounding air is not greater than95% (at 25 ℃);

00005——existⅡA～ⅡB、ⅡA～ⅡCLevel,Explosive hazardous areas formed by the mixture of flammable gases, vapors, and air in groups T1 to T4, as well as environments where explosive gas mixtures occur or may occur;

00006——A place without severe vibration and impact.

3、 Basic technical parameters