At present, the explosion-proof certificates are classified in the following ways:
※ Media classification according to applicable environment
(1) class I explosion-proof certificate, applicable to underground mine
(2) class II explosion proof certificate, applicable to non underground explosive gas environment
(3) class III explosion-proof certificate, i.e. dust explosion-proof certificate, applicable to explosive dust environment
※ Classification by countries and districts
(1) Explosion-proof certificate: applicable to explosion-proof electrical equipment in China,
(2) ATEX certificate:applicable to explosion-proof electrical equipment and non electrical equipment in EU market
(3) IECEx certificate: applicable to explosion-proof electrical equipment and non electrical equipment of IECEx system Member States
(4) North America explosion proof certificate:applicable to explosion-proof electrical equipment in North America
(5) Explosion proof certificate of other countries
※ Classification according to explosion-proof type