The Fault passage indicator is an instrument for indicating the passage of fault current in overhead 11KV and 33KV power lines.


  • Quicker fault location
  • Reduces need for line patrols
  • Aid to identifying faulty cable sections in OHL networks
  • Helps to indicate OHL transformer winding faults
  • Used by operator at ground level


  • Integral and factory changeable lithium battery – Up to 10 years life
  • Lightweight and portable
  • Reliable and robust
  • Responds to Phase/Earth and Phase/Phase fault
  • Auto battery test facility
  • Bright red flag alarm
  • Sensitivity switch

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  • Fault Passage Indicator