GE D90 Plus Instruction Manual page 219

CHAPTER 7: PROTECTION
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 185: Effect of blinders on the mho operating characteristic
Figure 186: Power swing detect quadrilateral operating characteristic
The FlexLogic™ output operands for the power swing detect element are described below.
Power swing detection operands
POWER SWING 50DD...............................Asserted when the power swing detection element detects a
disturbance other than a power swing.
GROUPED PROTECTION ELEMENTS
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