Sprādziendrošo iekārtu jomā, drošību būtiski nosaka ierīces temperatūras klasifikācija. T6 klasifikācija, norādot “maksimālā virsmas temperatūra,” pārstāv drošāko kategoriju šajā diapazonā. 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. Un otrādi, T1, with the highest allowed surface temperatūra, poses the greatest risk in explosive environments.
Elektrisko iekārtu temperatūras grupa | Maksimālā pieļaujamā elektroiekārtu virsmas temperatūra (℃) | Gāzes/tvaiku aizdegšanās temperatūra (℃) | Piemērojamie ierīces temperatūras līmeņi |
---|---|---|---|
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 sprādzienbīstams 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.