GE D30 Instruction Manual page 350
Line distance protection system
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- Instruction manual (686 pages) ,
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- Instruction manual (685 pages)
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GROUPED ELEMENTS
5.7.11.7 Auxiliary overvoltage (ANSI 59X, IEC PTOV)
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS AUXILIARY OV1
AUXILIARY OV1
5
The D30 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 AUXILIARY VT X5 SECONDARY
pickup level.
A typical application for this element is monitoring the zero-sequence voltage (3V_0) supplied from an open-corner-delta
VT connection.
5-218
Figure 5-122: Auxiliary undervoltage logic
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
Range: Disabled, Enabled
Range: SRC 1, SRC 2
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
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
SYSTEM
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