GE L60, Instruction Manual, Page: 247 / 498

GE Multilin L60 Line Phase Comparison Relay 5-155
5 SETTINGS 5.5 GROUPED ELEMENTS
5
e) AUXILIARY UNDERVOLTAGE (ANSI 27X)
PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS AUXILIARY UV1
This element is intended for monitoring undervoltage conditions of the auxiliary voltage. The
AUX UV1 PICKUP
selects the
voltage level at which the time undervoltage element starts timing. The nominal secondary voltage of the auxiliary voltage
channel entered under
SETTINGS SYSTEM SETUP AC INPUTS VOLTAGE BANK X5 AUXILIARY VT X5 SECONDARY
is the p.u. base used when setting the pickup level.
The
AUX UV1 DELAY
setting selects the minimum operating time of the auxiliary undervoltage element. Both
AUX UV1 PICKUP
and
AUX UV1 DELAY
settings establish the operating curve of the undervoltage element. The auxiliary undervoltage element
can be programmed to use either Definite Time Delay or Inverse Time Delay characteristics. The operating characteristics
and equations for both Definite and Inverse Time Delay are as for the Phase Undervoltage element.
The element resets instantaneously. The minimum voltage setting selects the operating voltage below which the element is
blocked.
Figure 5–92: AUXILIARY UNDERVOLTAGE SCHEME LOGIC
AUXILIARY UV1 AUX UV1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
AUX UV1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
AUX UV1 PICKUP:
0.700 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
AUX UV1 CURVE:
Definite Time
Range: Definite Time, Inverse Time
MESSAGE
AUX UV1 DELAY:
1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
AUX UV1 MINIMUM:
VOLTAGE: 0.100 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
AUX UV1 BLOCK:
Off
Range: FlexLogic™ operand
MESSAGE
AUX UV1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
AUX UV1 EVENTS:
Disabled
Range: Disabled, Enabled
827849A2.CDR
FLEXLOGIC OPERANDS
AUX UV1
FUNCTION:
AUX UV1 BLOCK:
AUX UV1 SIGNAL
SOURCE:
AUX UV1 MINIMUM
VOLTAGE:
AUX UV1 DPO
AUX UV1 OP
AUX UV1 PKP RUN
SETTING
SETTING
AUX UV1 CURVE:
AUX UV1 DELAY:
AUX UV1 PICKUP:
SETTING
Enabled=1
Disabled=0
SETTING
SETTING
Off=0
AUX VOLT Vx
Vx Minimum
Vx Pickup
t
V
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AND