Auxiliary Overvoltage (Ansi 59X, Iec Ptov); Auxiliary Overvoltage Scheme Logic - GE T60 Instruction Manual

5.6 GROUPED ELEMENTS
f) AUXILIARY OVERVOLTAGE (ANSI 59X, IEC PTOV)
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PATH: SETTINGS
 AUXILIARY OV1
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5
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
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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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GROUPED ELEMENTS 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 5–130: AUXILIARY OVERVOLTAGE SCHEME LOGIC
T60 Transformer Protection System
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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
5 SETTINGS
SYSTEM
GE Multilin