The Add | Relay Curves command in the OC Curves Window allows you to add relay curves to the plot. You can add relays in the vicinity of the first relay in the plot, relays in primary or backup groups, or relays on the remote bus.
TO ADD RELAY CURVES IN VICINITY:
1. Select the Add | Relay Curves command.
Note: This command is dimmed and cannot be activated if there are already 20 relay curves on the plot.
A dialog box will appear asking you to select the relay curves to be added to the plot.
2. Select from the dropdown list at the upper-left corner what relays you want to be include in the list box.
- Relays in this relay group. List only relays that are within the same relay group as the first relay on the plot.
- Relays in vicinity: Choose a number in the “No. of tiers” spin box. Set the tier number to 0 to list relays at the same bus as the first relay, 1 for relays at buses that are within one bus away, and so on.
- Relays backed up by this group: Lists relays that are backed up by the first relay, as determine by the coordinating-pair information.
- Backup relays of this group: Lists the first relay’s backups as determine by the coordinating-pair information.
- All primary and backup relays of this group: List relays in coordinating pairs involving the first relay.
- Relay on remote bus: Lists relays at the remote end of the first relay’s branch.
Each relay in the list is identified by the relay name, the branch name, and the branch name.
3. Select one or more relays by marking check box in front of relay name. Press OK.
The selected relay curves will appear on the plot.
Curves Window
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