GE G60 UR Series, Instruction Manual

Page: 317 / 634

GE Multilin G60 Generator Protection System 5-185
5 SETTINGS 5.6 GROUPED ELEMENTS
5
g) AUXILIARY OVERVOLTAGE (ANSI 59X)
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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AUXILIARY OV1(2)
The G60 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage
conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under
SYSTEM
SETUP
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AC INPUTS
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VOLTAGE BANK X5
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AUXILIARY VT X5 SECONDARY
is the per-unit (pu) base used when setting the
pickup level.
In the G60, this element is used to detect stator ground faults by measuring the voltage across the neutral resistor.
Figure 5–103: AUXILIARY OVERVOLTAGE SCHEME LOGIC
„
AUXILIARY OV1
„
AUX OV1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
AUX OV1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
AUX OV1 PICKUP:
0.300 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
AUX OV1 PICKUP
DELAY: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
AUX OV1 RESET
DELAY: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
MESSAGE
AUX OV1 BLOCK:
Off
Range: FlexLogic™ operand
MESSAGE
AUX OV1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
AUX OV1 EVENTS:
Disabled
Range: Disabled, Enabled
827836A2.CDR
FLEXLOGIC OPERANDS
AUX OV1
FUNCTION:
AUX OV1 BLOCK:
AUX OV1 SIGNAL
SOURCE:
AUX OV1 PICKUP:
AUX OV1 DPO
AUX OV1 OP
AUX OV1 PKP
RUN AND
SETTING
SETTING
AUX OV1 RESET
DELAY :
AUX OV1 PICKUP
DELAY :
SETTING
Enabled=1
Disabled=0
t
PKP
t
RST
SETTING
SETTING
Off=0
AUXILIARY VOLT (Vx)
Vx Pickup
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