Siemens 7SC80 - Flexible Protection Functions

Flexible Protection Functions
Measured Values/Modes of Operation
Three-phase
Ι, 3Ι
0
, Ι1, Ι2, Ι2/Ι1, V, 3V
0
, V1, V2, P forward, P
reverse, Q forward, Q reverse, cosφ
Single-phase
Ι, Ι
N
, Ι
N2
, V, V
N
, P forward, P reverse, Q
forward, Q reverse, cosφ
without fixed phase reference f, df/dt, binary input
Method of measurement for Ι, V
Fundamental component,
true RMS value,
positive-sequence system,
negative-sequence system,
zero-sequence system
Pickup when 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
N
= 1 A
0.05 A to 40.00 A Increments 0.01 A
for Ι
N
= 5 A
0.25 A to 200.00 A
RatioΙ
2
/Ι
1
15 % to 100 % Increments 1%
Voltage V, V
1
, V
2
, 3V
0
2.0 V to 260.0 V
1)
Increments 0.1 V
Displacement voltageV
N
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 factor 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
Jump detection (diff. fundamental component) 5 % to 100 % Increments 1%
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 forΙ
2
/Ι
1
0.00 s to 28800.00 s Increments 0.01 s
Command delay time 0.00 s to 3600.00 s Increments 0.01 s
Dropout delay 0.00 s to 60.00 s Increments 0.01 s
1) For LPS devices, the voltage V (including 3-phase and 1-phase) is recommended to be set as or higher than
10V.
Function Limits
Power measurement 3-phase
for Ι
Nom
= 1 A
Positive-sequence current > 0.03 A
for Ι
Nom
= 5 A
Positive-sequence current > 0.15 A
Power measurement 1-phase
for Ι
Nom
= 1 A
Phase current > 0.03 A
for Ι
Nom
= 5 A
Phase current > 0.15 A
4.20
Technical Data
4.20 Flexible Protection Functions
558 SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017