The terms are 'Ex' and EEx'. You are correct in your assumption that they are designations for Hazardous Location Electrical Equipment. Intrinsically Safe is one of the protection methods for Hazardous Location Electrical Equipment.
'Ex' is a generic designation for Haz Loc equipment and is typically used for equipment complying with IEC standards or Euorpean National (Non-CENELEC) Standards. 'EEx' is a designation for equipment complying with the CENELEC Standards. You may also note a graphical symbol consisting if a hexagon containing an epsilon and an 'x'. The is the 'Distinctive Community Mark' for equipment conforming to the Explosive Atmsopheres Directive. Bill Lawrence, Factory Mutual View expressed are personal, not necessarily corporate! At 03:16 7/26/96, you wrote: >Can anyone tell me what CENELEC "EX" or "EXX" ratings are? > >Possibly it is related to "Intrinsically Safe" or "Hazardous Locations" >qualification of devices. > > >THANKS!!!! > > >Harold Leipold >[email protected] > >
