Siemens siprotec 7SD5 User Manual page 563

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