GE T60 Instruction Manual page 446

GROUPED ELEMENTS CHAPTER 5: SETTINGS
— This setting selects the shape of the phase distance function between the mho and quadrilateral
PHS DIST Z1 SHAPE
characteristics. The selection is available on a per-zone basis. The two characteristics and their possible variations are
shown in the following figures.
Figure 5-116: Directional mho phase distance characteristic
Figure 5-117: Non-directional mho phase distance characteristic
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5-228 T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL