Siemens SIPROTEC 7SK80 - Voltage Protection 27, 59

Technical Data
4.7 Voltage Protection 27, 59
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
361
4.7 Voltage Protection 27, 59
Setting ranges / increments
1)
r = V
dropout
/V
pickup
Undervoltages 27-1, 27-2
Measured quantity used - Positive sequence system of the voltages
- Smallest phase-to-phase voltage
- Smallest 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
1)
1.01 to 3.00 Increments 0.01
Dropout threshold for (r· 27-1) or (r· 27-2) max. 130 V for phase-to-phase voltage
max. 225 V for phase-to-Ground voltage
Minimum hysteresis 0.6 V
Time delays T 27-1, T 27-2 0.00 s to 100.00 s or
∞ (disabled)
Increments 0.01 s
Current criterion "BkrClosed I MIN" for I
Nom
= 1 A 0.04 A to 1.00 A Increments 0.01 A
for I
Nom
= 5 A 0.20 A to 5.00 A
Overvoltages 59-1, 59-2
Measured quantity used - Positive sequence system of the voltages
- Negative sequence system of the voltages
- Largest phase-to-phase voltage
- Largest 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
2 V to 150 V
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
2 V to 150 V
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
1)
0.90 to 0.99 Increments 0.01 V
Dropout threshold for (r· 59-1) or (r· 59-2) max. 150 V for phase-to-phase voltage
max. 260 V for phase-to-Ground voltage
Minimum hysteresis 0.6 V
Time delay T 59-1, T 59-2 0.00 s to 100.00 s or
∞ (disabled)
Increments 0.01 s