Functions
6-288
7SA6 Manual
C53000-G1176-C156-2
Note
that the fast trip of Zone 1 is delayed by the setting in
2921
. Unless absolutely
necessary the setting should be zero. Alternatively the internal Fuse Failure Monitor
can be used (see above).
Trip Circuit
Supervision
The number of circuits to be monitored was set during the configuration in address
140
TripCirc.Superv
(Section 5.1). If the trip circuit supervision is not used at all,
the setting
Disabled
must be applied there.
The trip circuit supervision can be switched
ON
or
OFF
in address
4001
FCT Trip-
Superv.
. The number of binary inputs that shall be used in each of the monitored cir-
cuits is set in address
4002
No. of BI.
If the marshalling of the binary inputs re-
quired for this function does not correspond to the previously selected type of monitor-
ing, a corresponding alarm is issued (“
TripC ProgFAIL
” with the number of the
faulty monitoring circuit).
The trip circuit failure alarm is delayed by a fixed period of approximately 1 s to 2 s in
the case of monitoring with two binary inputs. The alarm delay in the event of monitor-
ing with one binary input can be set in address
4003
Alarm Delay
. If 7SA6 is the
only device connected in the trip circuit, a delay of 1 s to 2 s is sufficient as the trip
circuit supervision is not active during a detected system fault. If, however, trip con-
tacts from other devices are connected in parallel in the trip circuit, the fail alarm must
be delayed such that the longest trip command duration can be reliably bridged.
6.21.3 Settings
Measurement
Supervision
Note:
The indicated secondary current values for setting ranges and default settings
refer to I
N
= 1 A. For the nominal current 5 A the current values are to be multiplied
by 5. The values of impedance are divided by 5.
Addresses which have an „A“ attached to its end can only be changed with DIGSI
®
4
in “Additional Settings“.
Addr.
Setting Title
Setting Options
Default Setting
Comments
2901
MEASURE.
SUPERV
ON
OFF
ON
Measurement Supervision
2902A
BALANCE U-LIMIT
10..100 V
50 V
Voltage Threshold for Balance
Monitoring
2903A
BAL. FACTOR U
0.58..0.95
0.75
Balance Factor for Voltage
Monitor
2904A
BALANCE I LIMIT
0.10..1.00 A
0.50 A
Current Balance Monitor
2905A
BAL. FACTOR I
0.10..0.95
0.50
Balance Factor for Current Moni-
tor
2906A
Σ
I THRESHOLD
0.05..2.00 A
0.10 A
Summated Current Monitoring
Threshold
2907A
Σ
I FACTOR
0.00..0.95
0.10
Summated Current Monitoring
Factor
2910
FUSE FAIL MON.
ON
OFF
ON
Fuse Failure Monitor
Содержание siprotec 7SA6
Страница 2: ...Siemens Aktiengesellschaft Book No C53000 G1176 C156 2 ...
Страница 18: ...xviii 7SA6 Manual C53000 G1176 C156 2 ...
Страница 32: ...Introduction 1 14 7SA6 Manual C53000 G1176 C156 2 ...
Страница 82: ...Hardware and Connections 2 50 7SA6 Manual C53000 G1176 C156 2 ...
Страница 119: ...SIPROTEC 4 Devices 4 25 7SA6 Manual C53000 G1176 C156 2 Figure 4 20 CFC Logic example ...
Страница 190: ...Configuration 5 62 7SA6 Manual C53000 G1176 C156 2 ...
Страница 559: ...Control During Operation 7 45 7SA6 Manual C53000 G1176 C156 2 Figure 7 45 Circuit breaker trip test in DIGSI 4 ...
Страница 652: ...Installation and Commissioning 8 78 7SA6 Manual C53000 G1176 C156 2 ...
Страница 724: ...Technical Data 10 56 7SA6 Manual C53000 G1176 C156 ...
Страница 800: ...Appendix A 76 7SA6 Manual C53000 G1176 C156 2 ...
Страница 866: ...Appendix B 66 7SA6 Manual C53000 G1176 C156 2 ...