Manaporofo ny fipoahan'ny Shenhai
Eo amin'ny sehatry ny fitaovana tsy mipoaka, ny fiarovana dia voafaritra tsara amin'ny fanasokajiana ny mari-pana amin'ny fitaovana. Vidin'ny T6, manondro ny “ambony indrindra mari-pana ambony,” dia maneho ny sokajy azo antoka indrindra ao anatin'io karazany io. This classification ensures that the surface temperature of the equipment is low enough to prevent igniting flammable gases, even those with a low ignition point. Mifanohitra, T1, with the highest allowed surface hafanana, poses the greatest risk in explosive environments.
| Vondrona mari-pana amin'ny fitaovana elektrika | Ny mari-pana ambony indrindra azo atao amin'ny fitaovana elektrika (℃) | Etona / etona mari-pana (℃) | Ny haavon'ny mari-pana amin'ny fitaovana azo ampiharina |
|---|---|---|---|
| T1 | 450 | ＞450 | T1~T6 |
| T2 | 300 | ＞300 | T2~T6 |
| T3 | 200 | ＞200 | T3~T6 |
| T4 | 135 | ＞135 | T4~T6 |
| T5 | 100 | ＞100 | T5~T6 |
| T6 | 85 | ＞85 | T6 |
In explosion-proof equipment, the primary concern isn’t an internal component explosion, but rather the restriction of energy released from damaged internal components to prevent igniting gases in baomba atmospheres. As per the “Design Specifications for Electrical Installations in Explosive and Fire Hazardous Environments”, the T6 level stands as the safest classification. Devices with T6 classification are effective in preventing explosions, especially in environments with low ignition point combustible gases, not to mention those with higher ignition points.