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Fault Passage Indicator for Underground Network

End of commercialisation


  • Features

    The DAX digital fault passage indicator is designed to detect and signal the passage of a fault current (zero-phase sequence, and/or short circuit) on underground MV grid lines.

    When the current exceeds a preset threshold, the DAX stores the fault and indicates it on the outside of the substation.

    • Current measured by one or three sensors
    • The man-machine interface is equipped with a LCD screen
    • Wide range of adjustments and additional functions
    • Complies with all IEC standards
    • Different options
      • Outdoor flashing LED's
      • fault metering
    • Phase fault thresholds: 225 to 700 A and Earth fault thresholds: 5 to 180 A 
    • Time thresholds for fault detection: 60 to 360 ms

    Contractual warranty

    Period : 18 months


    • User-friendly
    • Wide range of adjustments and additional functions available
    • Simple for installation and exploitation
    • Reduction of customer minute losses
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