Flexible Protection Functions
Measured Values / Modes of Operation
Three-phase
Ι, 3Ι
0
, Ι1, Ι2, Ι2/Ι1, V, 3V
0
, V1, V2, dV/dt, P
forward, P reverse, Q forward, Q reverse, cosφ
Single-phase
Ι, Ι
N
, Ι
NN
,Ι
N2
, V, V
N
,V
x
, P forward, P reverse, Q
forward, Q reverse, cosφ
Without fixed phase reference f, df/dt, binary input
Measurement method for Ι, V
Fundamental,
r.m.s. value (true RMS),
positive sequence system,
negative sequence system,
zero sequence system
Pickup on exceeding threshold value or
falling below threshold value
Setting Ranges / Increments
Pickup thresholds:
Current Ι, Ι
1
, Ι
2
, 3Ι
0
, Ι
N
for Ι
Nom
= 1 A
0.05 A to 40.00 A Increments 0.01 A
for Ι
Nom
= 5 A
0.25 A to 200.00 A
Relationship Ι
2
/Ι
1
15 % to 100 % Increments 1%
Sensitive ground currentΙ
Ns
0.001 A to 1.500 A Increments 0.001 A
Voltage V, V
1
, V
2
, 3V
0
2.0 V to 260.0 V Increments 0.1 V
Displacement voltage V
0
2.0 V to 200.0 V Increments 0.1 V
Power P, Q
for Ι
N
= 1 A
2.0 W to 10000 W Increments 0.1 W
for Ι
N
= 5 A
10 W to 50000 W
Power facto cosφ -0.99 to +0.99 Increments 0.01
Frequency for f
Nom
= 50 Hz
for f
Nom
= 60 Hz
40.0 Hz to 60.0 Hz
50.0 Hz to 70.0 Hz
Increments 0.01 Hz
Increments 0.01 Hz
Frequency change df/dt 0.10 Hz/s to 20.00 Hz/s Increments 0.01 Hz/s
Voltage change dV/dt 4 V/s to 100 V/s Increments 1 V/s
Dropout ratio > element 1.01 to 3.00 Increments 0.01
Dropout ratio < element 0.70 to 0.99 Increments 0.01
Dropout difference f 0.02 Hz to 1.00 Hz Increments 0.01 Hz
Pickup delay (standard) 0.00 s to 60.00 s Increments 0.01 s
Pickup delay for Ι
2
/Ι
1
0.00 s to 28,800.00 s Increments 0.01 s
Command delay time 0.00 s to 3,600.00 s Increments 0.01 s
Dropout delay 0.00 s to 60.00 s Increments 0.01 s
Fixed Dropout Difference
Dropout difference df/dt
0.1 Hz/s
Dropout difference dV/dt 3 V/s
4.20
Technical Data
4.20 Flexible Protection Functions
406 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
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