Siemens siprotec 7SA6, Manual

Page: 140 / 876

Configuration
5-12
7SA6 Manual
C53000-G1176-C156-2
Figure 5-5 Double command with single contacts
Figure 5-6 Double command with single contacts plus common contact
In contrast to other output relays the relay common to a bus is allocated to different
switching devices (see Figure 5-7). For security reasons the switching devices cannot
be switched at the same time.
The relay common to a bus automatically adopts the properties of the controlling relay,
i. e. it is not configured individually. The output is single-pole.
Figure 5-7 Double command with single output common to a bus
CLOSE
Command
C+
C–
TRIP
Command
t
CLOSE TRIP
Switching
Device
C+ C–
L+
L–
Matrix Configuration:
C+
X
1
C–
X
2
CLOSE
Command
C+
C–
TRIP
Command
CC
t
CLOSE TRIP
Switching
Device
C+ C–
L+
L–
CC
Matrix Configuration:
C+
X
1
C–
X
2 3
X
CC
CLOSE
Command
C+
C–
TRIP
Command
CCC
t
CLOSE TRIP
Switching
Device
1
Switching Device
2...n
C+ C–
L+
L–
CCC
Matrix Configuration:
C+
X
1
C-
X
2
X
CCC
n