GE UR F35 Series Instruction Manual page 286

5.6 GROUPED ELEMENTS
b) PHASE UNDERVOLTAGE (ANSI 27P, IEC PTUV)
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PATH: SETTINGS GROUPED ELEMENTS
 PHASE
 UNDERVOLTAGE1
5
This element may be used to give a desired time-delay operating characteristic versus the applied fundamental voltage
(phase-to-ground or phase-to-phase for wye VT connection, or phase-to-phase for delta VT connection) or as a definite
time element. The element resets instantaneously if the applied voltage exceeds the dropout voltage. The delay setting
selects the minimum operating time of the phase undervoltage. The minimum voltage setting selects the operating voltage
below which the element is blocked (a setting of "0" will allow a dead source to be considered a fault condition).
5-154
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SETTING GROUP 1(6)
PHASE UV1
FUNCTION: Disabled
PHASE UV1 SIGNAL
MESSAGE
SOURCE: SRC 1
PHASE UV1 MODE:
MESSAGE
Phase to Ground
PHASE UV1
MESSAGE
PICKUP: 1.000 pu
PHASE UV1
MESSAGE
CURVE: Definite Time
PHASE UV1
MESSAGE
DELAY:
PHASE UV1 MINIMUM
MESSAGE
VOLTAGE: 0.100 pu
PHASE UV1 BLOCK:
MESSAGE
Off
PHASE UV1
MESSAGE
TARGET: Self-reset
PHASE UV1
MESSAGE
EVENTS: Disabled
Figure 5–65: PHASE UNDERVOLTAGE1 SCHEME LOGIC
F35 Multiple Feeder Protection System
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VOLTAGE ELEMENTS
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
Range: Phase to Ground, Phase to Phase
Range: 0.000 to 3.000 pu in steps of 0.001
Range: Definite Time, Inverse Time
Range: 0.00 to 600.00 s in steps of 0.01
1.00 s
Range: 0.000 to 3.000 pu in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5 SETTINGS

PHASE UNDERVOLTAGE1(3)
GE Multilin