Editable values are stored either in RAM or a nonvolatile flash memory. The values stored in the flash memory are in effect also after a reboot.
Some parameters have an edit-copy. If writing is cancelled, the values with an edit-copy are immediately restored to the original value. The values without an edit-copy, such as string values, are restored to the original value only after a reboot even though the edited value is not stored in the flash memory.
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After editing parameter values, click Write to Relay to put the values into the protection relay's database for use. The values are not stored to the flash memory.
Figure 1. Writing values to the protection relay
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Click Store or Reject Changes to open a dialog displaying the edited parameters.
Tip: There are three options Store Changes, Reject Changes and Cancel in the dialog box that opens. Clicking Reject exits the edit mode without storing the values to the nonvolatile memory. Clicking Cancel closes the dialog box and returns to parameter editing. When rejecting changes, if the parameter has an edit-copy, the original parameter value is restored. If the parameter does not have an edit-copy, the edited parameter value remains visible until the protection relay is rebooted. However, the edited value is not stored in the nonvolatile memory and thus the reboot restores the original value.
Figure 2. Storing or rejecting parameter changes
Note: Storing values takes a few seconds.Note: If the values are not stored, they are not taken into use and they are lost after a reboot.