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3.2 Classification of gases and vapors in explosion groups and temperature classes

3.2 Classification of gases and vapors in explosion groups and temperature classes. CE 0158 II 2 G EEx de IIC T1 to T4. Flameproof enclosure“. European Standard EN Explosion protection Type of protection - Pressurized enclosure p

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3.2 Classification of gases and vapors in explosion groups and temperature classes

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  1. 3.2 Classification of gases and vapors in explosion groups and temperature classes

  2. CE 0158 II 2 G EEx de IIC T1 to T4 Flameproof enclosure“ • European Standard EN • Explosion protection • Type of protection - Pressurized enclosure p - Flameproof enclosure d - Increased safety e • Explosion group (max. experimental safe gap) MESG < 0.5 mm IIC 0.5 mm < MESG < 0.9 mm IIB MESG > 0.9 mm IIA • Temperature class with limiting temperature T1 450 °C T2 300 °C T3 200 °C T4 135 °C T5 100 °C T6 85 °C de means: Motor EExd with EExe terminal box

  3. 6.3 Coding – nameplates Example: EEx de /EEx e 1MJ6, EEx de 1MA7, EEx e

  4. 6.4 Coding – nameplates Example: (E)Ex n 1LA7, (E)Ex n 1LA7, (E)Ex n Inverter-fed-operation

  5. 6.5 Coding – nameplates Example: Dust-Ex 1LA9, Zone 21 Inverter-fed-operation 1LA7, Zone 22

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