OEL Tab
Use this tab to configure your over-excitation limiting settings. Enter the over-excitation limiting values according to the manufacturer’s recommendations for your specific generator. The values you enter here represent the thresholds and time delays required for over-excitation limiting, and to protect the generator/exciter from harmful heating.
On this tab, you can choose to display either online over-excitation limiting or offline over-excitation limiting.
For online over-excitation limiting, the height of the upper bar is determined by the High-Level and Medium-Level Setpoints, and its length is determined by the High-Level Time Delay. The height of the second bar is determined by the Medium-Level and Low-Level Setpoints, and its length is determined by the Medium-Level Time Delay. The Low-Level Setpoint extends continuously.
For offline over-excitation limiting, the height of the upper bar is determined by the High-Level and Low-Level setpoints, and its length is determined by the High-Level Time Delay. The height of the second bar is determined by the Low-Level Setpoint, which extends continuously.
Parameters
Over-Excitation Limiting Enable
Check this box to enable over-excitation limiting
Over-Excitation Limiting
Tip: | The values you enter for setpoints are checked in relation to each other. In other words, High-Level Setpoint >= Medium-Level Setpoint >= Low-Level Setpoint. |
Online
High-Level Setpoint
Valid values range from 0.0 A to 9999.0 A. The default value is 30.0 A.
High-Level Time Delay
Valid values range from 0.0 seconds to 60.0 seconds. The default value is 2.0 seconds.
Medium-Level Setpoint
Valid values range from 0.0 A to 9999.0 A. The default value is 15.0 A.
Medium-Level Time Delay
Valid values range from 0.0 seconds to 120.0 seconds. The default value is 10.0 seconds.
Low-Level Setpoint
Valid values range from 0.0 A to 9999.0 A. The default value is 10.0 A.
Offline
High-Level Setpoint
Valid values range from 0.0 A to 9999.0 A. The default value is 20.0 A.
High-Level Time Delay
Valid values range from 0.0 seconds to 10.0 seconds. The default value is 2.0 seconds.
Low-Level Setpoint
Valid values range from 0.0 A to 9999.0 A. The default value is 10.0 A.
Validate & Graph
Click this button to update the current over-excitation limiting graph, based on the values you have entered.
Online Graph/Offline Graph
Click this button to toggle between the online and offline over-excitation limiting graphical displays. The label on the button varies, based upon the graph you are currently displaying.
OK
Click this button to accept your edits on any tab and close the dialog.
Cancel
Click this button to cancel your edits on any tab and close the dialog.
Apply
Click this button to apply your edits on any tab and continue editing.
Help
Click this button for help on this tab.
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