Definition of explosion-proof mark
Explosion-proof mark refers to the mark used to describe the explosion-proof level, temperature group, explosion-proof type and applicable area of explosion-proof electrical equipment.
Explosion mark requirements
Explosion-proof electrical equipment must have a clear permanent convex mark "Ex" in the obvious place. Small equipment can be welded on the casing with a sign plate or marked with a concave mark.
The nameplate of the equipment casing must be clearly marked and firmly fixed. The nameplate should have the following contents: an obvious “Ex” mark on the upper right; an explosion-proof mark indicating the type, category, level, temperature group of the explosion-proof in order; Numbers and other special conditions that need to be marked, as well as the date of manufacture or product serial number.
Explosion-proof mark detailed introduction
Explosion-proof electrical equipment is in accordance with the requirements of the GB 3836 standard.The explosion-proof markings of explosion-proof electrical equipment include:
Explosion-proof type + equipment category + (gas group) + temperature group
