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Figure 8-16
Routing in DIGSI
In the previous figure, the switch is connected 1-pole. The protection trip command is routed individually for
the 3 phases (Trip only pole A to Trip only pole C). The protection trip command is routed for the
3 phases (Trip/open cmd. 3-pole). The control will always switch off the 3 poles of the switch. In addi-
tion, the 3 U (Unsaved) allocations of the activation and trip command are set to 3-pole. This routing is also
used by protection functions that trip 3 poles. The close command is issued simultaneously for all 3 phases.
Example: Trip Command during Transition from 1-Pole to 3-Pole
During a transition from 1-pole to 3-pole tripping, Trip only pole A remains active. To inform, for
example, an external AREC whether it is a 1-pole or 3-pole trip, you can use the indications
Trip
logic:Trip indication:1-pole
and
Trip logic:Trip indication:3-pole
.
Control Functions
8.2 Switching Devices
SIPROTEC 5, Overcurrent Protection, Manual 1089
C53000-G5040-C017-8, Edition 07.2017
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