Siemens siprotec 7SA522 - Page 472

4 Technical Data
472
7SA522 Manual
C53000-G1176-C155-3
Overvoltage Negative Sequence System U
2
Overvoltage Zero Sequence System 3U
0
or any Single-Phase Voltage U
X
Undervoltage Phase–Earth
Overvoltage U
2
>> 2.0 V to 220.0 V; ∞ Increments 0.1V
Delay T
U2>>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Overvoltage U
2
> 2.0 V to 220.0 V; ∞ Increments 0.1V
Delay T
U2>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Drop-off to pick-up ratio 0.30 to 0.98 Increments 0.01
Pickup time Approx. 35 ms (50 Hz) / approx. 30 ms (60 Hz)
Drop-off time Approx. 30 ms
Tolerances Voltages 3 % of setting value or 1 V
Times 1 % of setting value or 10 ms
Overvoltage 3U
0
>> 1.0 V to 220.0 V; ∞ Increments 0.1V
Delay T
3U0>>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Overvoltage 3U
0
> 1.0 V to 220.0 V; ∞ Increments 0.1V
Delay T
3U0>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Drop-off to pick-up ratio 0.30 to 0.98 Increments 0.01
Pickup time
With repeated measurement Approx. 75 ms (50 Hz) / approx. 65 ms (60 Hz)
Without repeated measurement Approx. 35 ms (50 Hz) / approx. 30 ms (60 Hz)
Drop-off time 30 ms
Tolerances Voltages 3 % of setting value or 1 V
Times 1 % of setting value or 10 ms
Undervoltage U
Ph
<< 1.0 V to 100.0 V Increments 0.1V
Delay T
UPh<<
0.00 s to 100.00 s; ∞ Increments 0.01 s
Undervoltage U
Ph
< 1.0 V to 100.0 V Increments 0.1V
Delay T
UPh<
0.00 s to 100.00 s; ∞ Increments 0.01 s
Drop-off to pick-up ratio Approx. 1.05
Current criterion Can be switched on/off
Pickup time Approx. 35 ms (50 Hz) / approx. 30 ms (60 Hz)
Drop-off time Approx. 30 ms
Tolerances Voltages 3 % of setting value or 1 V
Times 1 % of setting value or 10 ms