Create Protection Relays - Intergraph Smart Electrical - Help - Hexagon

This procedure explains how to create protection relays. You can assign one or more functions to a protection relay.

1. In the Reference Data Explorer, expand the hierarchy Power Distribution Equipment > Disconnect Electrical Equipment > Metering Equipment.

   OR

   In the Electrical Index, expand the folder hierarchy by selecting the + icons or by double-clicking the folders, and then select an item according to the following step.

2. Do one of the following:

   • Under the Electrical Equipment folder, navigate to a load, an item of converting equipment, or another electrical item, and display the Metering Equipment folder for that item.

   • Expand the hierarchy Power Distribution Equipment > Power Distribution Boards and select a Metering Equipment folder under a power distribution board, a bus, a cell, or a transfer switch.

   • Expand the hierarchy Power Distribution Equipment > Power Distribution Boards and select a circuit.

   • Expand the hierarchy Power Distribution Equipment > Disconnect Electrical Equipment > Protection Relays.

3. Right-click the selected item, and then select New Protection Relay.

4. Select the new protection relay that you have created, and in the Properties window, type a numeric value for the Tag Sequence No property. The Tag Sequence No property determines the positioning of the measuring transformer on the SLD.

   To display a protection relay on an SLD, you need to drag it to the SLD after generation.

5. With the protection relay selected, select Edit > Common Properties (CTRL+F2).

6. On the Metering Equipment Common Properties dialog, enter appropriate values for the protection relay.

7. Choose the Functions tab to specify the relay functions that you want to include.

8. Select Add for each new function that you want to add to the protection relay, and select the required relay function from the Find dialog .

9. Modify the function properties if required.

• In Data Dictionary, you can add user-defined properties for your protection relay functions. For details, see the Data Dictionary documentation.

• Modifying the function properties does not affect the default values for that function.

If the parent folder contains custom folders, the created item is placed in the root folder. If the items properties match the filter properties of a custom folder a copy of the item is also placed in the custom folder. Refreshing or closing and re- opening Smart Electrical moves the item from the root folder to the All Items folder.