Underground Fault indicator DYO-FF-FIS

  • Underground Fault indicator DYO-FF-FIS
  • Underground Fault indicator DYO-FF-FIS


    Underground Fault indicator DYO-FF-FIS is a Four-Faith underground cable fault indicator family used in environments with higher precision requirements. The sensor based on the Rogowski coil has better sensitivity and supports the detection of short-circuit ground faults. It has self-test and self-recovery functions. Underground Fault indicator is suitable for 5-38KV power distribution ring network lines. Installed in substation cable outlets, RMU reduces fault location time and provides safety for public utility workers.

    Feature and Benefit

    • Easy to install and use

      The display panel adopts wall-mounted installation, which is simple and fast, and the sensor adopts threaded interface to quickly lock the cable

    • Reduce fault-finding time

      Remote access to SCADA
      Minimize the fault finding time, without opening the high-voltage cabinet, reducing personnel investigation

    • Various reset methods

      Manual, time, automatic, remote Custom time reset, 12h, 24h to ensure enough time to find faults

    • Superior precision design

      Based on Rogowski coil sensor, the accuracy can reach ±5%> When 100A, the protection level meets IP65

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