The designation dIIBT4 refers to a Class II, Category B explosion-proof rating.
II | amin ' | T4 | Gb | IP64 |
---|---|---|---|---|
Mine I | metanina | T1 450 ℃ | Ma Extremely high level of protection | IP64 |
T2 300 ℃ | ||||
Mb High level protection |
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T3 200 ℃ | ||||
I Surface Materials | propane | Ga Extremely high level of protection |
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T4 135 ℃ | ||||
Ethylene | Gb High level protection |
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T5 100℃ | ||||
hydrogène, Acetylene | Gc General level protection |
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T6 85 ℃ |
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 hafanana remains below 130°C.