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Performing Selective Coordination

How to perform selective coordination.

Start in the SELECTIVE COORDINATION drafting view.

Set Breaker Curves for Transformer T1 and Panel L

  1. Run the ElectroBIM Design→  Panel Edit command. If prompted to select a distribution equipment to edit, press ESC. The Panel Edit dialog box will open.

  2. Select transformer T1 from the list.

  3. Beside OCP Trip ▾, press the button. The OCP Device Settings dialog box will open.

  4. Make the following changes:

    1. Set Manufacturer ☰ to GE.
    2. Set Group ☰ to Insulated Case Circuit Breaker > Type SH > MicroVersaTrip PM > 800A Frame.
  5. Press the button to close the dialog box.

  6. Select panel L from the list and, beside OCP Trip ▾, press the button. The OCP Device Settings dialog box will open.

  7. Make the following changes:

    1. Set Manufacturer ☰ to Square D.
    2. Set Group ▾ to Low Voltage Power Circuit Breakers > MasterPact NW > MicroLogic 2.0.
  8. Press the button to close the dialog box.

  9. Press the button to close the dialog box.

Create the Selective Coordination Graph

  1. Run the ElectroBIM Design→  Graph Insert command. The Insert Selective Coordination Graph dialog box will open.

  2. Press the button. The Select Distribution Equipment dialog box will open.

  3. Select transformer T1 from the list and press the button to close the dialog box.

  4. Repeat steps 2-3 for panel L.

  5. Press the button to close the dialog box.

  6. Follow the prompts to insert the graph on the drafting view.

Modify the Breaker Curve

  1. Run the ElectroBIM Design→  Curve Edit command.

  2. On the graph, select the curve or label for transformer T1.The OCP Device Settings dialog box will open.

  3. Make the following changes:

    1. Set Short-time Pickup ☰ to 2.
    2. Set I² T ☰ to Out.
    3. Set Instantaneous Pickup ☰ to 2.
  4. Press the button to close the dialog box.

The graph will update to reflect the changes.