According to explosion-proof type, it can be divided into five main types: flameproof type, safety type, positive pressure type, non-spark type and dust explosion-proof type.
According to the type of protection against electric shock can be divided into Ⅰ, Ⅱ, Ⅲ class. Anti-shock protection is to prevent the shell of explosion-proof lamps easy to touch parts electrification, so that the human body electric shock or different potential conductor touch produce electric sparks and ignite explosive mixture.
A Ⅰ class, on the basis of the basic insulation will be accessible when the normal work of the electrically neutral of the electrically conductive parts are connected to the protective earthing conductor in A fixed line.
B Ⅱ class - with double insulation or reinforced insulation as a safety protection measures, no grounding protection.
Class C Ⅲ - use safe voltage effective value is not more than 50 v, and won't produce higher than this voltage value.
Class D0 - relies only on basic insulation for safety protection. The vast majority of explosion-proof type for protection against electric shock I kind of lamps and lanterns of lamps and lanterns, only a few for Ⅱ, Ⅲ lamps and lanterns. For example: plastic explosion-proof lamps, explosion-proof flashlights.
According to the protection class of the shell: in order to protect dust, solid foreign bodies and water into the lamp chamber, touch or accumulate on live parts to produce fire, short circuit or damage electrical insulation and other hazards, there are a variety of shell protection methods to protect electrical insulation. Use the character "IP" followed by two Numbers to represent the protection level of its shell. The first number represents protection against human, solid foreign matter, or dust. There are grades 0-6. Explosion-proof luminaire is a kind of sealing luminaire, its dustproof ability is at least 4 class above, the 2nd number represents the protection ability to water, divides into 0 -- 8 class.