5-254 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
GROUPED ELEMENTS CHAPTER 5: SETTINGS
5
5.7.7 Load encroachment
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) LOAD ENCROACHMENT
The load encroachment element responds to the positive-sequence voltage and current and applies a characteristic as
shown in the figure.
Figure 5-138: Load encroachment characteristic
The element operates if the positive-sequence voltage is above a settable level and asserts its output signal that can be
used to block selected protection elements, such as distance or phase overcurrent. The following figure shows an effect of
the load encroachment characteristics used to block the quadrilateral distance element.
LOAD ENCROACHMENT
LOAD ENCROACHMENT
FUNCTION: Disabled
Range: Disabled, Enabled
LOAD ENCROACHMENT
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
LOAD ENCROACHMENT
MIN VOLT: 0.250 pu
Range: 0.004 to 3.000 pu in steps of 0.001
LOAD ENCROACHMENT
REACH: 1.00 Ω
Range: 0.02 to 250.00 ohms in steps of 0.01
LOAD ENCROACHMENT
ANGLE: 30°
Range: 5 to 50° in steps of 1
LOAD ENCROACHMENT
PKP DELAY: 0.000 s
Range: 0.000 to 65.535 s in steps of 0.001
LOAD ENCROACHMENT
RST DELAY: 0.000 s
Range: 0.000 to 65.535 s in steps of 0.001
LOAD ENCRMNT BLK:
Off
Range: FlexLogic operand
LOAD ENCROACHMENT
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
LOAD ENCROACHMENT
EVENTS: Disabled
Range: Disabled, Enabled
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