GE N60 Instruction Manual page 297

CHAPTER 5: SETTINGS
At 0% of pickup, the operating time equals the
5.7.5.2 Phase undervoltage (ANSI 27P, IEC PTUV)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  VOLTAGE ELEMENTS  PHASE UNDERVOLTAGE1(3)
 PHASE
 UNDERVOLTAGE1
This element is used to give a 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" allows a dead source to be considered a fault condition).
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
Figure 5-85: Inverse time undervoltage curves
% of voltage pickup
PHASE UNDERVOLTAGE DELAY
PHASE UV1

FUNCTION: Disabled
PHASE UV1 SIGNAL

SOURCE: SRC 1
PHASE UV1 MODE:

Phase to Ground
PHASE UV1

PICKUP: 1.000 pu
PHASE UV1

CURVE: Definite Time
PHASE UV1

DELAY: 1.00 s
PHASE UV1 MINIMUM

VOLTAGE: 0.100 pu
PHASE UV1 BLOCK:

Off
PHASE UV1

TARGET: Self-reset
PHASE UV1

EVENTS: Disabled
GROUPED ELEMENTS
842788A1.CDR
setting.
Range: Disabled, Enabled
Range: SRC 1, SRC 2
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
Range: 0.000 to 3.000 pu in steps of 0.001
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5
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