Instruments in Zone 1: Hot Work Permit Required, Device Coupler in Zone 2

  1. Trunk: protected installation according to IEC 60079-14
  2. Spurs: protected installation according to IEC 60079-14
  3. Instruments: flameproof Ex d, protected installation
     

Where classifications for both—Zone 2 and Zone 1—exist, this installation method is suitable. The entire installation requires a means of mechanical protection: “increased safety” Ex ec and Ex eb. The Segment Protector always resides in Zone 2.


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