Fault Passage Indicators

Narayan manufactures FPI for detecting earth and/or phase faults

Standard features are:

  • Potential free connection to short-circuit and earth-fault sensors
  • Short-circuit: seven trip currents, see sensor type LK
  • Earth-fault: seven trip currents, see sensor type LE
  • Four response delays between 40 ms and 300 ms

LED indication:

  • Passage of 2nd short-circuit by double blinking
  • Indication of permanent earth-faults by double blinking
  • Button to test the function of the display unit

Reset function:

  • Manual by push-button
  • Time: four values between 1 h and 12 h 
  • Remote reset contacts
  • Optional: by recovering auxiliary power supply

Power supply:

  • Lithium battery type AA 3.6 V
  • Contacts for remote monitoring