Current Transformer on Incorrect Phase

  1. Locate the CT on the Meter page in Setup App.
  2. Determine which phase the CT should be measuring.
    Informational PurposesAn informational icon, calling your attention
    Note
    If using Gateway CTs, the ports are CT 1 (Line 1), CT2, (Line 2), CT 3 (defaults to Line 1 but can be configured as Line 2 in Setup App).
    Informational PurposesAn informational icon, calling your attention
    Note
    If using a Neurio meter, the ports are A (Line 1), B (Line 2), B (Line 2), A (Line 1) and are determined by voltage reference.
  3. Verify the CT is measuring the correct phase.
Figure 1. Gateway CT Measuring Correct Phase (top) and Incorrect Phase (bottom)
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Note
In the examples above, the CT is monitoring a solar inverter conductor, which is why only (1) CT is required.
Figure 2. Neurio W2 CT Measuring Correct Phase (top) and Incorrect Phase (bottom)
Informational PurposesAn informational icon, calling your attention
Note
In the examples above, the CT is monitoring a solar inverter conductor, which is why only (1) CT is required.