Siemens SIPROTEC 7SJ80

Voltage Protection
Setting Ranges / Increments
Undervoltages 27-1, 27-2
Measured quantity used
with three-phase connection
- Positive sequence system of voltages
- Smallest phase-to-phase voltages
- Smallest phase-to-ground voltage
Measured quantity used with single-phase
connection
Single-phase phase-to-ground or phase-to-phase voltage
Connection of phase-to-ground voltages
- Bewertung Leiter-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
Increment 1 V
Increment 1 V
Increment 1 V
Connection of phase-to-phase voltages 10 V to 120 V Increment 1 V
Connection: single-phase 10 V to 120 V Increment 1 V
Dropout ratio r for 27-1, 27-2
1)
1.01 to 3.00 Increment 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 27-1 DELAY, 27-2 DELAY 0.00 s to 100.00 s oder ∞
(disabled)
Increment 0.01 s
Current criterion BkrClosed I
MIN
for Ι
N
= 1 A
0.04 A to 1.00 A Increment 0.01 A
for Ι
N
= 5 A
0.20 A to 5.00 A
Overvoltages 59-1, 59-2
Measured quantity used
with three-phase connection
- Positive sequence system of the voltages
- Negative sequence system of the voltages
- Largest phase-to-phase voltage
- Largest phase-to-ground voltage
Measured quantity used
with single-phase connection
Connected single-phase phase-togroundvoltage or
phase-to-phase 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
Increment 1 V
Increment 1 V
Increment 1 V
Increment 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
Increment 1 V
Increment 1 V
Increment 1 V
Connection: single-phase 20 V to 150 V Increment 1 V
Dropout ratio r for 59-1, 59-2
1)
0.90 to 0.99
Increment 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 delays 59-1 DELAY, 59-2 DELAY 0.00 s to 100.00 s or ∞ (disa-
bled)
Increment 0.01 s
4.8
Technical Data
4.8 Voltage Protection
SIPROTEC 4, 7SJ80, Manual 381
E50417-G1140-C343-A8, Edition 12.2017