IP68 220V Ex Proof Junction Box Exd Junction Box Stainless Steel

IP68 220V Ex Proof Junction Box Stainless Steel Explosion Proof EXD Junction Box

Explosion Proof Junction Box Details

1. Explosion-proof junction box is a die-cast aluminum alloy shell, the surface is sprayed with pure epoxy powder, and the exposed fasteners are stainless steel, which can meet the anti-corrosion requirements of the chemical, petrochemical and offshore industries. It is suitable for IIA, IIB, IIC explosive gas atmosphere in zone 1, zone 2 and combustible dust environment in zone 20, 21 and 22.

2. Division of hazardous areas in explosive gas environments
   Zone 0: An environment where explosive gas mixtures occur continuously or for a long time.
   Zone 1: An environment where explosive gas mixtures may occur during normal operation.
   Zone 2: An environment where explosive gas mixtures are unlikely to occur during normal operation or where explosive gas mixtures only exist for a short time even if they occur.

3. Explosion-proof electrical equipment is divided into two categories:
   Class Ⅰ electrical equipment used in underground coal mines
   Class II electrical equipment used in occasions other than mines
   Class Ⅱ electrical equipment is divided into three categories: ⅡA, ⅡB, and ⅡC according to the safety gap or minimum ignition current ratio applicable to the test of explosive gas mixtures; and according to its surface temperature, it is divided into six groups T1-T6.

4. Explosive gas mixtures are grouped by ignition temperature, see Table 1.

5. Explosive gas mixtures are classified according to their test safety gap (MESG) or minimum ignition current ratio (MICR)