The designation dIIBT4 refers to a Class II, Category B explosion-proof rating.
II | બી | T4 | જી.બી | IP64 |
---|---|---|---|---|
Mine I | મિથેન | T1 450℃ | મા Extremely high level of protection | IP64 |
T2 300℃ | ||||
Mb High level protection |
||||
T3 200℃ | ||||
I Surface Materials | પ્રોપેન | Ga Extremely high level of protection |
||
T4 135℃ | ||||
ઇથિલિન | જી.બી High level protection |
|||
T5 100℃ | ||||
હાઇડ્રોજન, એસીટીલીન | Gc General level protection |
|||
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 તાપમાન remains below 130°C.