7EN02-0477-02

MFLK1 is connected to the system voltage: Locating the fault

Fault will be located by checking the insulation resistance.
  1. Open the voltage connector cap.
  2. NOTICE
    Equipment damage
    • Ensure that CT probe cable is connected to the CT connector.
    • Ensure that voltage input cable is connected to the voltage input connector.
    Failure to follow these instructions can result in equipment damage.
    Connect the MFLK1 to the network, using the provided specific cable to the voltage quarter turn connector of the MFLK1 on one end, and to earth then Phase 1, 2 or 3 on the other end.
  3. Clamp the CT probe to the first downstream feeder.

    • If the resistance is higher than the defined threshold, then there is no fault. Check the next downstream feeder.

    • If the resistance is close to the IMD resistance value displayed, then there is fault in this feeder, should be disconnected and repaired.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

Was this helpful?