Siemens siprotec 7SD5

4.17 Undervoltage and Overvoltage Protection (optional)
561
7SD5 Manual
C53000-G1176-C169-1
4.17 Undervoltage and Overvoltage Protection (optional)
Phase-earth Overvoltages
Phase-phase Overvoltages
Overvoltage Positive Sequence System U
1
Overvoltage Negative Sequence System U
2
Overvoltage U
Ph
>> 1.0 V to 170.0 V; ∞ Increments 0.1 V
Delay T
UPh>>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Overvoltage U
Ph
> 1.0 V to 170.0 V; ∞ Increments 0.1 V
Delay T
UPh>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Dropout ratio 0.30 to 0.98 Increments 0.01
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
Overvoltage U
PhPh
>> 2.0 V to 220.0 V; ∞ Increments 0.1 V
Delay T
UPhPh>>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Overvoltage U
PhPh
> 2.0 V to 220.0 V; ∞ Increments 0.1 V
Delay T
UPhPh>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Dropout ratio 0.30 to 0.98 Increments 0.01
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
Overvoltage U
1
>> 2.0 V to 220.0 V; ∞ Increments 0.1 V
Delay T
U1>>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Overvoltage U
1
> 2.0 V to 220.0 V; ∞ Increments 0.1 V
Delay T
U1>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Dropout ratio 0.30 to 0.98 Increments 0.01
Compounding 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
Overvoltage U
2
>> 2.0 V to 220.0 V; ∞ Increments 0.1 V
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 0.1 V
Delay T
U2>
0.00 s to 100.00 s; ∞ Increments 0.01 s
Dropout ratio 0.30 to 0.98 Increments 0.01
Pickup times (fast relays/high-speed relays) approx. 35/30 ms
Dropout time approx. 30 ms
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