Siemens siprotec 7SA522 - Page 382

Functions
6-234 7SA522 Manual
C53000-G1176-C119-2
Figure 6-125 Circuit breaker position logic
&
CB aux. contact:
R380
R380
R351
R351
&
≥1
&
≥1
≥1
&
R352
R352
&
≥1
≥1
&
R353
R353
&
≥1
≥1
&
R379
R379
≥1
plausibility
check
8
L1
L2
L3
L1
L2
L3
L2L1 L3
L1, L2, L3 circuit breaker
aux. contacts
BI .. Binary input with FNo
R .. Binary input is allocated
L1
closed
any pole
closed
L1
open
L2
closed
L2
open
L3
closed
L3
open
any pole
open
3
3
8
0
>
C
B
3
p
O
p
e
n
351
>CB Aux. L1
352
>CB Aux. L2
353
>CB Aux. L3
3
7
9
>
C
B
3
p
C
l
o
s
e
d
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