Functions
6-252
7SA6 Manual
C53000-G1176-C156-2
Figure 6-124 Creation process of signal “CB any pole closed”
If an internal protection function or an external protection device trips without current
flow, the internal input “Start internal w/o I” or the external input “
>BF Start w/o I
”
is used to initiate the breaker failure protection. In these cases the breaker auxiliary
contact position is the only criterion for the response of the circuit breaker.
Initiation can be blocked via the binary input “
>BLOCK BkrFail
” (e.g. during testing
of the feeder protection relay). Additionally, an internal blocking option is provided.
Figure 6-125 Breaker failure protection with common phase initiation
&
> 1
&
>CB Aux. L1
Start L123
>CB Aux. L2
CB any pole closed
S
R
Q
FNr 351
FNr 352
L1>
L2>
L3>
> 1
>CB Aux. L3
FNr 353
>CB 3p Closed
FNr 379
>CB 3p Open
FNr 380
&
Start internal w/o l
>BF Start 3pole
&
Start L123
>BF release
>BLOCK BkrFail
not allocated
allocated
„1“
Configuration
Internal blocking
> 1
> 1
>BF Start w/o l
Start internal 3pole
&
L2>
L3>
L1>
CB any pole closed
Yes
No
> 1
> 1
&
3909
Chk BRK CONTACT
BF Start
> 1
(from Fig 6-124)
(f
rom
F
ig
6-
12
2)
FNo 1432
FNo 1403
FNo 1415
FNo 1439
FNo 1461
Summary of Contents for siprotec 7SA6
Page 2: ...Siemens Aktiengesellschaft Book No C53000 G1176 C156 2 ...
Page 18: ...xviii 7SA6 Manual C53000 G1176 C156 2 ...
Page 32: ...Introduction 1 14 7SA6 Manual C53000 G1176 C156 2 ...
Page 82: ...Hardware and Connections 2 50 7SA6 Manual C53000 G1176 C156 2 ...
Page 119: ...SIPROTEC 4 Devices 4 25 7SA6 Manual C53000 G1176 C156 2 Figure 4 20 CFC Logic example ...
Page 190: ...Configuration 5 62 7SA6 Manual C53000 G1176 C156 2 ...
Page 652: ...Installation and Commissioning 8 78 7SA6 Manual C53000 G1176 C156 2 ...
Page 724: ...Technical Data 10 56 7SA6 Manual C53000 G1176 C156 ...
Page 800: ...Appendix A 76 7SA6 Manual C53000 G1176 C156 2 ...
Page 866: ...Appendix B 66 7SA6 Manual C53000 G1176 C156 2 ...