Technical Data
4.2 Voltage Protection (27, 59)
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
185
4.2 Voltage Protection (27, 59)
Setting Ranges / Increments
1)
r = V
dropout
/V
pickup
Undervoltages 27-1, 27-2, 27-Vp< (V<, V<<, Vp<)
Measured quantity used
With three-phase connection:
- Positive sequence system of the voltages
- Phase-to-phase voltage
- Phase-to-ground-voltage
Measured quantity used
with single-phase connection
Connected single-phase phase-to-ground voltage
Connection of phase-to-ground voltages:
- Evaluation of phase-to-ground voltages
- Evaluation of phase-to-phase voltages
- Evaluation of positive sequence system
10 V to 120 V
10 V to 210 V
10 V to 210 V
Increments 1 V
Increments 1 V
Increments 1 V
Connection of phase-to-phase voltages 10 V to 120 V Increments 1 V
Connection: single-phase 10 V to 120 V Increments 1 V
Dropout ratio r for 27-1, 27-2 (V<, V<<)
1)
1.01 to 3.00 Increments 0.01
Dropout Threshold for r · 27-1 (r · V<) or 27-2 (r · V<<)
or 27-Vp< (r · Vp<)
max. 150 V for phase-to-phase voltage
max. 225 V for phase-to-ground voltage
Minimum hysteresis 0.6 V
Time Delays: 27-1 DELAY (T V<), 27-2 DELAY (T
V<<), 27 T Vp<
0.00 s to 100.00 s or
∞ (inactive)
Increments 0.01 s
Overvoltage 59-1, 59-2, 59-Vp>(
V>, V>>, Vp> )
Measured quantity used
With three-phase connection
- Positive sequence system of the voltages
- Negative sequence system of the voltages
- Phase-to-phase voltage
- Phase-to-ground-voltage
Measured quantity used
with single-phase connection
Connected single-phase phase-to-ground voltage
Connection of phase-to-ground voltages:
- Evaluation of phase-to-ground voltages
- Evaluation of phase-to-phase voltages
- Evaluation of positive sequence system
- Evaluation of negative sequence system
20 V to 150 V
20 V to 260 V
20 V to 150 V
2V to 150V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Connection of phase-to-phase voltages:
- Evaluation of phase-to-phase voltages
- Evaluation of positive sequence system
- Evaluation of negative sequence system
20 V to 150 V
20 V to 150 V
2V to 150V
Increments 1 V
Increments 1 V
Increments 1 V
Connection: Single-phase 20 V to 150 V Increments 1 V
Dropout ratio r for 27-1, 27-2 (V>, V>>)
1)
0.90 to 0.99 Increments 0.01
Dropout Threshold for r · 27-1 (r · V>) or r · 27-2 (r ·
V>>) or r · 27-Vp> (r · Vp>)
max. 150 V for phase-to-phase voltage
max. 260 V for phase-to-ground voltage
Minimum hysteresis 0.6 V
Time Delays: 27-1 DELAY (T V>), 27-2 DELAY (T
V>>), 27 T Vp>
0.00 s to 100.00 s or
∞ (inactive)
Increments 0.01 s
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