Protection and Automation Functions
6.4 Voltage-Dependent Overcurrent Protection, Phases
Parameter: Duration of V-seal-in time
•
Default setting (_:104) Duration of V-seal-in time = 4.00 s
The parameter Duration of V-seal-in time limits the pickup seal-in induced by an overcurrent or
undervoltage. The value must be set higher than the value of the parameter Operate delay. The difference
shall be greater than 0.5 s. In the default setting, a difference of 1 s is used.
Parameter: Vph-ph< threshold
•
Default setting (_:105) Vph-ph< threshold = 60.000 V
With the parameter Vph-ph< threshold, you can set the threshold at which the output signal
release is activated when the minimum phase-to-phase voltage falls below this threshold.
Parameter: V2> threshold
•
Default setting (_:106) V2> threshold = 4.600 V
With the parameter V2> threshold, you can set the threshold at which the output signal
release is issued when V2 exceeds the threshold.
6.4.6.3
Settings
Addr.
Vseal-in+Vrel#
_:1
_:2
_:3
_:6
_:10
_:101
_:102
_:104
_:105
_:106
376
Parameter
C
Vseal-in+Vrel#:Mode
Vseal-in+Vrel#:Operate
& flt.rec. blocked
Vseal-in+Vrel#:Threshold 1 A @ 100 Irated 0.030 A to 35.000 A
5 A @ 100 Irated 0.150 A to 175.000 A
1 A @ 50 Irated
5 A @ 50 Irated
1 A @ 1.6 Irated
5 A @ 1.6 Irated
Vseal-in+Vrel#:Operate
delay
Vseal-in+Vrel#:Blk. by
meas.-volt. failure
Vseal-in+Vrel#:State of
V-seal-in
Vseal-in+Vrel#:V-seal-in
threshold
Vseal-in+Vrel#:Duration
of V-seal-in time
Vseal-in+Vrel#:Vph-ph<
threshold
Vseal-in+Vrel#:V2>
threshold
Setting Options
•
off
•
on
•
test
•
no
•
yes
0.030 A to 35.000 A
0.150 A to 175.000 A
0.001 A to 1.600 A
0.005 A to 8.000 A
0.00 s to 60.00 s
•
no
•
yes
•
off
•
on
0.300 V to 175.000 V
0.10 s to 60.00 s
0.300 V to 175.000 V
0.300 V to 200.000 V
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
Voltage
Voltage
Default Setting
off
no
1.350 A
6.750 A
1.350 A
6.750 A
1.350 A
6.750 A
3.00 s
yes
off
46.200 V
4.00 s
60.000 V
4.600 V