GE t60 Instruction Manual page 331

5 SETTINGS
f) AUXILIARY OVERVOLTAGE (ANSI 59X)
PATH: SETTINGS GROUPED ELEMENTS
AUXILIARY OV1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The T60 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
SETUP AC INPUTS VOLTAGE BANK X5
pickup level.
A typical application for this element is monitoring the zero-sequence voltage (3V_0) supplied from an open-corner-delta
VT connection.
SETTING
AUX OV1
FUNCTION:
Disabled=0
Enabled=1
SETTING
AUX OV1 BLOCK:
Off=0
SETTING
AUX OV1 SIGNAL
SOURCE:
AUXILIARY VOLT (Vx)
GE Multilin
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
AUXILIARY VT X5 SECONDARY
SETTING
AUX OV1 PICKUP:
AND RUN
<
Vx Pickup
Figure 5–111: AUXILIARY OVERVOLTAGE SCHEME LOGIC
T60 Transformer Protection System
5.6 GROUPED ELEMENTS
VOLTAGE ELEMENTS AUXILIARY OV1(2)
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
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
is the per-unit (pu) base used when setting the
SETTING
AUX OV1 PICKUP
DELAY :
AUX OV1 RESET
DELAY :
FLEXLOGIC OPERANDS
t
PKP
AUX OV1 OP
t
RST
AUX OV1 DPO
AUX OV1 PKP
SYSTEM
5
827836A2.CDR
5-199