GE Multilin 850 Instruction Manual page 312

PROTECTION
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4–180
REACH
Range: 0.02 to 250.00 Ω in steps of 0.01 Ω
Default: 5.00 Ω
The setting specifies the resistive reach of the element as shown in the Load
Encroachment characteristic diagram. The setting is entered in secondary ohms and is
calculated as the positive-sequence resistance seen by the relay under maximum load
conditions and unity power factor.
ANGLE
Range: 5 to 50° in steps of 1°
Default: 30°
This setting specifies the size of the blocking region as shown on the Load
Encroachment characteristic diagram, and applies this to the positive-sequence
impedance.
PICKUP DELAY
Range: 0.000 to 6000.00 s in steps of 0.001 s
Default: 0.000 s
It has to be taken into account that the Pickup time delay programmed in the overcurrent
elements (or the other elements) that are blocked with Load Encroachment must be higher
than the time programmed in the Load Encroachment function, in order to avoid false
tripping.
DROPOUT DELAY
Range: 0.000 to 6000.00 s in steps of 0.001 s
Default: 0.000 s
BLOCK
Range: Off, Any FlexLogic operand
Default: Off
OUTPUT RELAY X
For details see Common
EVENTS
Range: Disabled, Enabled
Default: Enabled
TARGETS
Range: Disabled, Self-reset, Latched
Default: Disabled
As the Load Encroachment function operates during normal conditions it is recommended
that targets be disabled.
Setpoints.
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 4: SETPOINTS