GE D90 Plus Instruction Manual page 421

CHAPTER 7: PROTECTION
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 351: 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
operating signal exceeds the value specified here. If the
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 29: Protection FlexElement™ pickup per-unit base units
Element
Frequency
Power factor
setting is "Over", the element picks up when the
Direction Type
Base unit
1 Hz
1.00
PROTECTION FLEXLOGIC™
setting is "Under",
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