Siemens SIPROTEC Manual page 622

Technical Data
4.19 Undervoltage and Overvoltage Protection (optional)
Phase-phase undervoltages
Undervoltage U <<
PhPh
Delay T
UPhPh<<
Undervoltage U <
PhPh
Delay T
UPhPh<
Dropout ratio
Current criterion
Pick-up times
Dropout time
Tolerances
Undervoltage Positive Sequence SystemU
Undervoltage U <<
1
Delay T
U1<<
Undervoltage U <
1
Delay T
U1<
Dropout ratio
Current criterion
Pick-up times
Dropout time
Tolerances
622
1.0 V to 175.0 V
0.00 s to 100.00 s; ∞
1.0 V to 175.0 V
0.00 s to 100.00 s; ∞
1.01 to 1.20
Can be switched on/off
Approx. 35 ms
Approx. 30 ms
Voltages 3 % of setting value or 1 V
Times 1 % of setting value or 10 ms
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; ∞
1.01 to 1.20
Can be switched on/off
Approx. 35 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
Increments 0.1 V
Increments 0.01 s
Increments 0.1 V
Increments 0.01 s
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011