Siemens SIPROTEC 7SJ62 - Voltage Protection

Technical Data
4.8 Voltage Protection 27, 59
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
497
4.8 Voltage Protection 27, 59
Setting Ranges / Increments
1)
r = V
dropout
/V
pickup
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:
- 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
Increment 1 V
Increment 1 V
Increment 1 V
Connection of phase-to-phase voltages 10 V to 120 V Increments 1V
Connection: single-phase 10 V to 120 V Increments 1V
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. 120 V for phase-to-phase voltage
max. 210 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 or
∞ (disabled)
Increments 0.01 s
Current criterion BkrClosed I MIN for I
Nom
= 1 A 0.04 A to 1.00 A Increment 0.01 A
for I
Nom
= 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 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-to-ground voltage 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
40 V to 150 V
40 V to 260 V
40 V to 150 V
2V to 150V
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
40 V to 150 V
40 V to 150 V
2V to 150V
Increment 1 V
Increment 1 V
Increment 1 V
Connection: single-phase 40 V to 150 V Increments 1V
Dropout ratio r for 59-1, 59-2
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 delays 59-1DELAY, 59-2 DELAY 0.00 s to 100.00 s or
∞ (disabled)
Increments 0.01 s
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