GE L90 Instruction Manual page 237

5 SETTINGS
f) AUXILIARY OVERVOLTAGE (ANSI 59X)
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PATH: SETTINGS GROUPED ELEMENTS
# AUXILIARY OV1
#
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
This element is intended for monitoring overvoltage conditions of the auxiliary voltage. A typical application for this element
is monitoring the zero-sequence voltage (3V_0) supplied from an open-corner-delta VT connection. The nominal secondary
voltage of the auxiliary voltage channel entered under
is the p.u. base used when setting the pickup level.
X5 SECONDARY
SETTING
AUX OV1
FUNCTION:
Disabled=0
Enabled=1
SETTING
AUX OV1 BLOCK:
Off=0
SETTING
AUX OV1 SIGNAL
SOURCE:
AUXILIARY VOLT (Vx)
GE Multilin
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SETTING GROUP 1(6)
AUX OV1
FUNCTION: Disabled
AUX OV1 SIGNAL
SOURCE: SRC 1
AUX OV1 PICKUP:
0.300 pu
AUX OV1 PICKUP
DELAY: 1.00 s
AUX OV1 RESET
DELAY: 1.00 s
AUX OV1 BLOCK:
Off
AUX OV1 TARGET:
Self-reset
AUX OV1 EVENTS:
Disabled
SYSTEM SETUP
SETTING
AUX OV1 PICKUP:
AND RUN
<
Vx Pickup
Figure 5–90: AUXILIARY OVERVOLTAGE SCHEME LOGIC
L90 Line Differential Relay
5.5 GROUPED ELEMENTS
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VOLTAGE ELEMENTS AUXILIARY OV1
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.000 to 3.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
! "!
AC INPUTS VOLTAGE BANK X5
SETTING
AUX OV1 PICKUP
DELAY :
AUX OV1 RESET
DELAY :
t
PKP
t
RST
"!
AUXILIARY VT
FLEXLOGIC OPERANDS
AUX OV1 OP
AUX OV1 DPO
AUX OV1 PKP
827836A2.CDR
5-147
5