Ubufakazi bokuqhuma kwe-Shenhai
The designation dIIBT4 refers to a Class II, Category B explosion-proof rating.
| II | B | T4 | Gb | IP64 |
|---|---|---|---|---|
| Mine I | I-Methane | T1 450℃ | Ma Extremely high level of protection | IP64 |
| T2 300℃ | ||||
| Mb High level protection |
||||
| T3 200℃ | ||||
| I Surface Materials | I-Propane | Ga Extremely high level of protection |
||
| T4 135℃ | ||||
| I-Ethylene | Gb High level protection |
|||
| T5 100℃ | ||||
| I-hydrogen, I-acetylene | 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 izinga lokushisa remains below 130°C.