Siemens siprotec 7SD5

4.17 Undervoltage and Overvoltage Protection (optional)
563
7SD5 Manual
C53000-G1176-C169-1
Undervoltage Positive Sequence System U
1
Undervoltage U
1
<< 1.0 V to 100.0 V Increments 0.1 V
Delay T
U1<<
0.00 s to 100.00 s; ∞ Increments 0.01 s
Undervoltage U
1
< 1.0 V to 100.0 V Increments 0.1 V
Delay T
U1<
0.00 s to 100.00 s; ∞ Increments 0.01 s
Dropout ratio approx. 1.05
Current criterion Can be switched on/off
Pickup times (fast relays/high-speed relays) approx. 35/30 ms
Dropout time approx. 30 ms
Tolerances Voltages 3 % of setting value or 1 V
Times 1 % of setting value or 10 ms
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