Explosion Proof Level of Explosion-Proof Fans

1. Different electrical equipment is classified based on safety levels for use in explosive gas atmospheres, which are divided into zones: Zone 0, Zone 1, and Zone 2.

2. The classification of gas or vapor explosive mixtures falls into three categories: IIA, IIB, and IIC. This classification is primarily based on the Maximum Experimental Safe Gap (MESG) or the Minimum Ignition Current Ratio (MICR).

3. The temperature grouping for igniting a specific medium is divided into several ranges. These include T1: below 450°C; T2: 300°C < T ≤ 450°C; T3: 200°C < T ≤ 300°C; T4: 135°C < T ≤ 200°C; T5: 100°C < T ≤ 135°C; T6: 85°C < T ≤ 100°C.