Siemens siprotec 7SD5 User Manual

4.6 System Power Swing (with impedance) (optional)
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7SD5 Manual
C53000-G1176-C169-1
4.6 System Power Swing (with impedance) (optional)
Power swing detection Rate of the impedance vector and observation of the path
curve
Maximum power swing frequency Approx. 7 Hz
Power swing blocking programs Block 1st zone only
Block higher zones
Block 1st and 2nd zone
Block all zones
Power swing trip Trip following instable power swings
(out-of-step)
Trip time delay after power swing block 0.08 to 5.00 s Increments 0.01 s
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Siemens siprotec 7SD5 Specifications

General

Brand	Siemens
Model	siprotec 7SD5
Category	Relays
Language	English