GE G60 UR Series, Instruction Manual

Page: 312 / 634

5-180 G60 Generator Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
b) PHASE UNDERVOLTAGE (ANSI 27P)
PATH: SETTINGS
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GROUPED ELEMENTS
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SETTING GROUP 1(6)
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VOLTAGE ELEMENTS
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PHASE UNDERVOLTAGE1(3)
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).
Figure 5–98: PHASE UNDERVOLTAGE1 SCHEME LOGIC
„
PHASE
„
UNDERVOLTAGE1
PHASE UV1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
PHASE UV1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
PHASE UV1 MODE:
Phase to Ground
Range: Phase to Ground, Phase to Phase
MESSAGE
PHASE UV1
PICKUP: 1.000 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
PHASE UV1
CURVE: Definite Time
Range: Definite Time, Inverse Time
MESSAGE
PHASE UV1
DELAY: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
PHASE UV1 MINIMUM
VOLTAGE: 0.100 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
PHASE UV1 BLOCK:
Off
Range: FlexLogic™ operand
MESSAGE
PHASE UV1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
PHASE UV1
EVENTS: Disabled
Range: Disabled, Enabled
PHASE UV1
FUNCTION:
PHASE UV1
BLOCK:
PHASE UV1 SOURCE:
PHASE UV1 MODE:
PHASE UV1
PICKUP:
PHASE UV1
CURVE:
PHASE UV1
DELAY:
PHASE UV1
MINIMUM VOLTAGE:
Disabled = 0
Off = 0
Source VT = Delta
Phase to Ground Phase to Phase
RUN
RUN
VCG or VCA PICKUP
VBG or VBC PICKUP
VAG or VAB Minimum
VBG or VBC Minimum
VCG or VCA Minimum
Source VT = Wye
VAG VAB
VBG VBC
VCG VCA
Enabled = 1
VAB
VBC
VCA
PHASE UV1 A PKP
PHASE UV1 B PKP
PHASE UV1 C PKP
PHASE UV1 PKP
PHASE UV1 A DPO
PHASE UV1 B DPO
PHASE UV1 C DPO
PHASE UV1 A OP
PHASE UV1 B OP
PHASE UV1 C OP
PHASE UV1 OP
AND
SETTING
SETTING
SETTING
SETTING
SETTING
SETTING
FLEXLOGIC OPERANDS
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
827039AB.CDR
AND
AND
AND
OR
OR
<
<
<
<
<
}
t
V
t
t
V
V
VAG or VAB PICKUP
<
RUN
PHASE UV1 DPO
FLEXLOGIC OPERAND
AND