This applies to contain Ⅱ class A, B grade and below T4 group explosive gas mixtures dangerous places in zone 1 and zone 2. explosion-proof performance in line with GB3836.1-2000 (explosive gas atmospheres Electrical Equipment Part 1 General Requirements) and GB3836.2-2000 (explosive gas atmospheres - electrical equipment - Part 2 flameproof 'd') provisions are widely applied to: petroleum, military technology, chemicals, machinery, medicine, metallurgy and other industries workshops, warehouses, offices , gas stations, etc. The summer cooling and ventilation.
Explosion-proof mark: ExdⅡBT4;
Explosion-proof grade: Grade B;
Wall proof axial exhaust fan can work reliably under the following conditions:
• altitude does not exceed 2000m;
• ambient temperature -20 ° C ~ + 40 ° C;
• ambient air relative humidity less than 95% (25 ° C time);
• A Class II Grade B T4 group and below the explosive gas hazardous areas of Zone 1 and Zone 2.