GE Digital Energy L30, Инструкция по эксплуатации, Страница: 302 / 644

5-176 L30 Line Current Differential System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
Figure 5–80: INVERSE TIME UNDERVOLTAGE CURVES
At 0% of pickup, the operating time equals the UNDERVOLTAGE DELAY setting.
b) PHASE UNDERVOLTAGE (ANSI 27P, IEC PTUV)
PATH: SETTINGS

GROUPED ELEMENTS

SETTING GROUP 1(6)

VOLTAGE ELEMENTS

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).

PHASE
 UNDERVOLTAGE1
PHASE UV1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
PHASE UV1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2
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
842788A1.CDR
% of voltage pickup
T
ime
(seconds)
NOTE