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Technical Data
4.7 Voltage Protection 27, 59
4.7
Voltage Protection 27, 59
Setting ranges / increments
Undervoltages 27-1, 27-2
Measured quantity used
Connection of phase-to-Ground voltages:
- Evaluation of phase-to-Ground voltages
- Evaluation of phase-to-phase voltages
- Evaluation of positive sequence system
Connection of phase-to-phase voltages
Connection: Single-phase
Dropout ratio r for 27-1, 27-2
Dropout threshold for (r· 27-1) or (r· 27-2)
Time delays T 27-1, T 27-2
Current criterion "BkrClosed I MIN"
Overvoltages 59-1, 59-2
Measured quantity used
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
Connection of phase-to-phase voltages:
- Evaluation of phase-to-phase voltages
- Evaluation of positive sequence system
- Evaluation of negative sequence system
Connection: Single-phase
Dropout ratio r for 27-1, 27-2
Dropout threshold for (r· 59-1) or (r· 59-2)
Time delay T 59-1, T 59-2
1)
r = V
dropout
376
1)
1)
/V
pickup
- Positive sequence system of the voltages
- Smallest phase-to-phase voltage
- Smallest phase-to-Ground voltage
10 V to 120 V
10 V to 210 V
10 V to 210 V
10 V to 120 V
10 V to 120 V
1.01 to 3.00
max. 130 V for phase-to-phase voltage
max. 225 V for phase-to-Ground voltage
Minimum hysteresis 0.6 V
0.00 s to 100.00 s or
∞ (disabled)
for I
= 1 A 0.04 A to 1.00 A
Nom
for I
= 5 A 0.20 A to 5.00 A
Nom
- Positive sequence system of the voltages
- Negative sequence system of the voltages
- Largest phase-to-phase voltage
- Largest phase-to-Ground voltage
20 V to 150 V
20 V to 260 V
20 V to 150 V
2 V to 150 V
20 V to 150 V
20 V to 150 V
2 V to 150 V
20 V to 150 V
0.90 to 0.99
max. 150 V for phase-to-phase voltage
max. 260 V for phase-to-Ground voltage
Minimum hysteresis 0.6 V
0.00 s to 100.00 s or
∞ (disabled)
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 0.01
Increments 0.01 s
Increments 0.01 A
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 1 V
Increments 0.01 V
Increments 0.01 s
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
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