The designation dIIBT4 refers to a Class II, Category B explosion-proof rating.
II | B | T4 | Gb | IP64 |
---|---|---|---|---|
Mine I | Mêtan | T1 450oC | Mã Extremely high level of protection | IP64 |
T2 300oC | ||||
Mb High level protection |
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T3 200oC | ||||
I Surface Materials | Propane | Ga Extremely high level of protection |
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T4 135oC | ||||
Etylen | Gb High level protection |
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T5 100℃ | ||||
Hydro, Axetylen | Gc General level protection |
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T6 85oC |
The prefix ‘d’ denotes a flameproof type of enclosure, designed so that any internal explosion is contained without damaging the enclosure and preventing the spread of explosion outside;
IIB specifies the category of gas utilized;
T4 signifies that the product’s maximum surface nhiệt độ remains below 130°C.