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Recommended tools

We recommend using the following tools to safely measure the voltage:

  • Duspol or Multimeter

 

Safety precautions

Always ensure the power is on and the circuit is properly energized before starting measurements. Wear insulated gloves and safety glasses to protect yourself from electrical hazards. Use a multimeter or measuring device that is rated for the voltage level you are working with, and ensure it is functioning correctly. Avoid touching live terminals or wires, and never work with one hand while the other hand is grounded to prevent the risk of electric shock. Finally, handle all equipment with care and follow the instructions to avoid accidents and ensure accurate readings.

 

 

Step-by-step instructions

Please follow below steps to locate the cause for the charger to report a missing phase.

Step 1: Check for presence of Error 212 on the display and/or in the SIA's logging.

  • L1-N, L2-N and L3-N should show between 207V and 253V for correct operation.

  • L1L2, L2L3 and L3L1 should show appr. 400V.
    Note that these line-voltages are only displayed when ABB power meter is used in the charger. Reallin power meters will show N/A.

    Voltages in SIA
     

Step 2: Check configuration for the number of phases.

  • Go to power settings in SIA and confirm if phases set matches the installation.


    When set to '3-phase' on a 1-phase install, the charger will miss the two phases that are not connected and may report error 212.
     

Step 3: Check voltages at incoming supply.

  • For EVE-Single: Measure on the power entry.

     

  • For EVE-Double and Twin, measure on the incoming side of the chargers main switch.
    This is where customers cable from the installation is connected.

     

  • L1-N, L2-N and L3-N should measure between 207V and 253V for correct operation.
     

Step 4: If measured incoming voltages are NOT correct.

  • Add picture to the ticket that shows the reading on your meter AND showing the position of the probes
    This to prove to the customer the incorrect voltage is received from the installation.

  • Installer/location should correct the issue as there is an external cause for the error.
     

Step 5: If measured incoming voltages are correct.

  • Follow the wire to find the location where the voltage is lost.
    The problem should be between the last  correct voltage and location where the voltage is lost.
    Check for broken wires or wires not connected correctly in components.

 

Keywords: FSP, Diagnose, 212, Missing, Phase