Schweitzer Engineering SEL-351P - Active Setting Group Retained; Power Loss; Settings Change

Date Code 990215 Inputs, Outputs, Timers, and Other Control Logic 7-27
SEL-351P Manual Técnico
Figure SECTION 7: .22: Active Setting Group Switching (with Rotating Selector
Switch) Time Line
Active Setting Group Retained
Power Loss
The active setting group is retained if power to the relay is lost and then restored. If a particular
setting group is active (e.g., setting Group 5) when power is lost, it comes back with the same
setting group active when power is restored.
Settings Change
If individual settings are changed (for the active setting group or one of the other setting groups),
the active setting group is retained, much like in the preceding Power Loss explanation.
If individual settings are changed for a setting group other than the active setting group, there is
no interruption of the active setting group (the relay is not momentarily disabled).