Siemens 7SJ85 - Settings

Parameter: Trip interface contains
•
Default setting (_:13921:101) Trip interface contains = operate (grid)
The stage provides 2 operate signals, the
Operate (generator) and the Operate (grid) .
You use the Trip interface contains parameter to define whether one or none of them will be
forwarded to the trip interface of the circuit-breaker interaction. The selected operate signal will trip the circuit
breaker that has been connected to the protection function group.
The setting depends on the specific application.
Parameter: Q sign
•
Default setting (_:13921:102) Q sign = not reversed
The default directions of the positive reactive-power flow Q and the forward direction of the short-circuit
protection are identical, in the direction of the main protected object (for example, a feeder). You use the Q
sign parameter to reverse the sign and therefore the direction of the reactive-power flow Q. This reversal
may be required for specific application, where the main protected object (for example, a line towards the
main power systems) is in different direction to the power-generation facility.
Parameter Value Description
not reversed
The protected object is in the same direction as the power-gener-
ation facility.
reversed
The protected object is not in the same direction as the power-
generation facility.
Settings
Addr.
Parameter C Setting Options Default Setting
Prot. stage 1
_:13921:1 Prot. stage 1:Mode
•
off
•
on
•
test
off
_:13921:2 Prot. stage 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13921:10 Prot. stage 1:Blk. by
meas.-volt. failure
•
no
•
yes
yes
_:13921:27 Prot. stage 1:Blk. w.
inrush curr. detect.
•
no
•
yes
no
_:13921:101 Prot. stage 1:Trip inter-
face contains
•
no operate
•
operate (generator)
•
operate (grid)
operate (grid)
_:13921:102 Prot. stage 1:Q sign
•
not reversed
•
reversed
not reversed
_:13921:3 Prot. stage 1:Q>
threshold value
1.00 % to 200.00 % 5.00 %
_:13921:103 Prot. stage 1:V<
threshold value
3.000 V to 175.000 V 85.000 V
_:13921:105 Prot. stage 1:I> release
threshold
1 A @ 100 Irated 0.030 A to 10.000 A 0.100 A
5 A @ 100 Irated 0.15 A to 50.00 A 0.50 A
1 A @ 50 Irated 0.030 A to 10.000 A 0.100 A
5 A @ 50 Irated 0.15 A to 50.00 A 0.50 A
1 A @ 1.6 Irated 0.001 A to 1.600 A 0.100 A
5 A @ 1.6 Irated 0.005 A to 8.000 A 0.500 A
_:13921:108 Prot. stage 1:Oper. delay
generator CB
0.00 s to 60.00 s 0.50 s
6.40.3.3
Protection and Automation Functions
6.40 Undervoltage-Controlled Reactive-Power Protection
SIPROTEC 5, Overcurrent Protection, Manual 831
C53000-G5040-C017-8, Edition 07.2017