Gb3836.1-2010 Electrical Equipment for Explosive gas Environments -- Part 1: General Requirements
Gb3836.2-2010 Electrical Equipment for Explosive Gas Environment -- Part 2: Flameproof type "D"
Electrical equipment for The Environment with Combustible dust - Part 1 / Part 5: General requirements, Enclosure protection type "tD"
National anti-explosive electric products quality supervision and inspection center, CNEX 】 【 explosion-proof marks for Exd Ⅱ CT6Gb/ExtD A21 IP68 T80 ℃.
To adapt to the environment
Applicable to factories with A and B Ⅱ Ⅱ, Ⅱ c-class T1 ~ T6 group of combustible gases and vapors in mixture with air to form explosive place of 0, 1 zone and 2 zone, and the formation of combustible dust in mixture with air of 20, 21, 22 area explosive dangerous location.Such as petroleum, chemical industry, wharf, oil depot, ship, drilling platform, gas station, mine, port, aerospace, military industry, medicine, steel, fire cracker production, machinery, food processing and storage sites.