Siemens SENTRON VL Series

Zone Selective Interlocking
5.2 Examples
3WL/3VL circuit breakers with communication capability - PROFIBUS
110 System Manual, 03/2011, A5E01051353-02
5.2 Examples
5.2.1 Function example
E
D
*UDGLQJOHYHO *UDGLQJOHYHO *UDGLQJOHYHO
W
J
 PV
W
VG
 PV
:/
6(
17521
4
4
6(17521
:/
W
VG
 PV
W
J
 PV
4
6(
17521
:/
W
VG
 PV
W
J
 PV
=6,,1



ನ
ನ
ನ
=6,287
=6,287
7,(%5
7,(%5
=6,,1
=6,,1



ನ
ನ
ನ
=6,287
=6,287
7,(%5
7,(%5
=6,,1
=6,,1



ನ
ನ
ನ
=6,287
=6,287
7,(%5
7,(%5
=6,,1






Example from the perspective of the circuit breaker (Q2). The operational principle of the ZSI
is explained using the following graphic.