Table of Contents • vii
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
11 Use in Hazardous Environments ...........................................................218
11.1 Foreword ..............................................................................................218
11.2 Protective Measures .............................................................................218
11.3 Classification Meeting CENELEC and IEC ........................................218
11.3.1 Divisions..........................................................................................218
11.3.2 Explosion Protection Group ............................................................220
11.3.3 Unit Categories................................................................................221
11.3.4 Temperature Classes........................................................................222
11.3.5 Types of Ignition Protection............................................................223
11.4 Classifications Meeting the NEC 500 ..................................................224
11.4.1 Divisions..........................................................................................224
11.4.2 Explosion Protection Groups........................................................... 224
11.4.3 Temperature Classes........................................................................225
11.5 Identification ........................................................................................226
11.5.1 For Europe .......................................................................................226
11.5.2 For America.....................................................................................227
11.6 Installation Regulations........................................................................228
12 Glossary.................................................................................................... 230
13 Literature List ......................................................................................... 241
14 Index......................................................................................................... 242
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