GE T60 Instruction Manual page 410

5.6 GROUPED ELEMENTS
f) AUXILIARY OVERVOLTAGE (ANSI 59X, IEC PTOV)
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PATH: SETTINGS GROUPED ELEMENTS
 AUXILIARY OV1
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The T60 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage
5
conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under
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SETUP AC INPUTS
pickup level.
A typical application for this element is monitoring the zero-sequence voltage (3V_0) supplied from an open-corner-delta
VT connection.
5-264
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SETTING GROUP 1(6)
AUX OV1
FUNCTION: Disabled
AUX OV1 SIGNAL
MESSAGE
SOURCE: SRC 1
AUX OV1 PICKUP:
MESSAGE
0.300 pu
AUX OV1 PICKUP
MESSAGE
DELAY: 1.00 s
AUX OV1 RESET
MESSAGE
DELAY: 1.00 s
AUX OV1 BLOCK:
MESSAGE
Off
AUX OV1 TARGET:
MESSAGE
Self-reset
AUX OV1 EVENTS:
MESSAGE
Disabled
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VOLTAGE BANK X5 AUXILIARY VT X5 SECONDARY
Figure 5–129: AUXILIARY OVERVOLTAGE SCHEME LOGIC
T60 Transformer Protection System
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VOLTAGE ELEMENTS AUXILIARY OV1(3)
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
5 SETTINGS
SYSTEM
GE Multilin