1. Automation and Drives A&D SD SM1, Hr. Mölter 19.02.2004 1/62 Explosionsschutz_En_02_2004.ppt Standard Drives 3.2Classification of gases and vapors in explosion groups and temperature classes

2. Automation and Drives A&D SD SM1, Hr. Mölter 19.02.2004 2/62 Explosionsschutz_En_02_2004.ppt Standard Drives 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 T1450 °C T2 300 °C T3 200 °C T4 135 °C T5 100 °C T6 85 °C CE 0158 II 2 G EEx de IIC T1 to T4 de means: Motor EExd with EExe terminal box

3. Automation and Drives A&D SD SM1, Hr. Mölter 19.02.2004 3/62 Explosionsschutz_En_02_2004.ppt Standard Drives 6.3 Coding – nameplates Example: EEx de /EEx e 1MA7, EEx e 1MJ6, EEx de

4. Automation and Drives A&D SD SM1, Hr. Mölter 19.02.2004 4/62 Explosionsschutz_En_02_2004.ppt Standard Drives 6.4 Coding – nameplates Example: (E)Ex n 1LA7, (E)Ex n Inverter-fed-operation

5. Automation and Drives A&D SD SM1, Hr. Mölter 19.02.2004 5/62 Explosionsschutz_En_02_2004.ppt Standard Drives 6.5 Coding – nameplates Example: Dust-Ex 1LA9, Zone 21 Inverter-fed-operation 1LA7, Zone 22