Siemens siprotec 7SD5

4.10 Weak-infeed Tripping (classic/optional)
551
7SD5 Manual
C53000-G1176-C169-1
4.10 Weak-infeed Tripping (classic/optional)
Operating mode
Undervoltage
Times
Phase segregated undervoltage detection after reception of a carrier signal from the remote end
Setting value U
PhE
< 2 V to 70 V Increments 1 V
Dropout to pickup ratio Approx. 1.1
Pickup tolerance ≤ 5 % of setting value, or 0.5 V
Enable delay 0.00 s to 30.00 s Increments 0.01 s
Enable delay 0.00 s to 30.00 s Increments 0.01 s
Echo blocking duration after echo 0.00 s to 30.00 s Increments 0.01 s
Pickup tolerance 1 % of setting value or 10 ms
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