Settings - Siemens SIPROTEC 4 7SD80 Manual

Before each closing detection, the circuit breaker must be recognized as being open for the settable time 1133
T DELAY SOTF.
Address 1135 Reset Trip CMD determines under which conditions a trip command is reset. If CurrentO-
penPole is set, the trip command is reset as soon as the current disappears. It is important that the value set
in address 1130 PoleOpenCurrent (see above) is undershot. If Current AND 52a is set, the circuit-
breaker auxiliary contact must send a message that the circuit breaker is open. It is a prerequisite for this
setting that the position of the auxiliary contacts is allocated via a binary input.
For special applications, in which the device trip command does not always lead to a complete cutoff of the
current, the setting Pickup Reset can be chosen. In this case, the trip command is reset as soon as the
pickup of the tripping protection function drops off and - just as with the other setting options- the minimum
trip command duration (address 240) has elapsed. The setting Pickup Reset makes sense, for instance,
during the test of the protection equipment, when the system-side load current cannot be cut off and the test
current is injected in parallel to the load current.
While the time SI Time all Cl. (address 1132, see above) is activated following each recognition of line
energization, SI Time Man.Cl (address 1150) defines the time following manual closure during which
special influence on the protection functions is activated. This parameter can only be set in DIGSI at Display
Additional Settings.
NOTE
i
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For CB Test and automatic reclosure the CB auxiliary contact status derived with the binary inputs >CB1 ...
No. 371, 410 and 411) are relevant for the circuit-breaker test and for automatic reclosure to be able to
indicate the circuit-breaker position. The other binary inputs >CB ... (no. 379 and 380) are used to detect
the status of the line (address 1134) and to reset the trip command (address 1135). Address 1135 is also
used by other protection functions, e.g. switching on overcurrent. For applications with 2 circuit breakers
per feeder (1.5 circuitbreaker systems or ring bus), the binary inputs >CB1... must be connected to the
correct circuit breaker. The binary inputs >CB... then need the correct signals for detecting the circuit-
breaker status. In certain cases, an additional CFC logic may be necessary.
For commands via the integrated control (local control, DIGSI, serial interface) address 1152 Man.Clos.
Imp. determines whether a close command via the integrated control function should be treated by the
protection regarding the MANUAL CLOSE (like instantaneous re-opening when switching onto a fault). This
address also informs the device to which switchgear this applies. You can select from the switching devices
which are available to the integrated control. Select the circuit breaker which operates for manual closure and,
if required, for automatic reclosure (usually Q0). If none is set here, a CLOSE command via the control will not
generate a MANUAL CLOSE impulse for the protection function.
2.1.6.2

Settings

Addresses which have an appended "A" can only be changed with DIGSI, under "Additional Settings".
The table indicates region-specific default settings. Column C (configuration) indicates the corresponding
secondary nominal current of the current transformer.
Addr. Parameter
1103 FullScaleVolt.
1104 FullScaleCurr.
1107 P,Q sign
1130A PoleOpenCurrent
1131A PoleOpenVoltage
1132A SI Time all Cl.
SIPROTEC 4, 7SD80, Manual
E50417-G1100-C474-A2, Edition 02.2018
C Setting Options
0.4 .. 500.0 kV
10 .. 20000 A
not reversed
reversed
1A 0.05 .. 1.00 A
5A 0.25 .. 5.00 A
2 .. 70 V
0.01 .. 30.00 sec
Default Setting Comments
10.0 kV Measurem:FullScale-
Voltage(Equipm.rating)
400 A Measurem:FullScaleCur-
rent(Equipm.rating)
not reversed P,Q operational measured
values sign
0.10 A Pole Open Current
Threshold
0.50 A
30 V Pole Open Voltage
Threshold
0.10 sec Seal-in Time after ALL
closures
Functions
2.1 General
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