GE D90 Plus - Page 422

412 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
PROTECTION FLEXLOGIC CHAPTER 7: PROTECTION
Figure 354: Relationship of input mode and direction settings
Pickup
Range: –90.000 to 90.000 pu in steps of 0.001
Default: 1.000 pu
This setting specifies the operating threshold for the effective operating signal of the
FlexElement. If the
Direction Type setting is “Over,” the element picks up when the
operating signal exceeds the value specified here. If the
Direction Type setting is “Under,”
the element picks up when the operating signal falls below the value specified here.
This setting is entered in per-unit values using the following definitions of the base units.
Table 26: Protection FlexElement pickup per-unit base units
Element Base unit
Frequency 1 Hz
Power factor 1.00
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