Siemens SIPROTEC 7SS523 V3.2 Manual page 187

Bay status
A TRIP command will be performed selectively for each feeder as soon as the feeder
current exceeds this threshold. The set value refers to the rated CT current. If you set
a feeder to 0, this feeder will be tripped without an I>query.
The parameter Bay status (XX12/CU) is used to select the operating status of the
bay unit.
With setting in service the bay unit will be in service.
With setting out of service the bay unit will be out of service.
With setting maintenance the bay unit will be in maintenance mode. In that, the iso-
lator replica is frozen in this operating state.
Note
The setting of the bay status can only be changed back at the unit where it was first
set. Possible are, for example, binary inputs, control panel or settings via DIGSI.
7SS52 V4 Manual
C53000-G1176-C182-1
Protection General
171