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