CHAPTER 5: SETTINGS GROUPED ELEMENTS
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 5-257
5
There are three negative-sequence overvoltage elements available.
Use the negative-sequence overvoltage element to detect loss of one or two phases of the source, a reversed phase
sequence of voltage, or a non-symmetrical system voltage condition.
Figure 5-145: Negative-sequence overvoltage logic
5.7.12.6 Auxiliary undervoltage (ANSI 27X, IEC PTUV)
SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS AUXILIARY UV1(3)
NEG SEQ OV1 PICKUP
DELAY: 0.50 s
Range: 0.00 to 600.00 s in steps of 0.01
NEG SEQ OV1 RESET
DELAY: 0.50 s
Range: 0.00 to 600.00 s in steps of 0.01
NEG SEQ OV1 BLOCK:
Off
Range: FlexLogic operand
NEG SEQ OV1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
NEG SEQ OV1 EVENTS:
Disabled
Range: Disabled, Enabled
AUXILIARY UV1
AUX UV1
FUNCTION: Disabled
Range: Disabled, Enabled
AUX UV1 SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2
AUX UV1 PICKUP:
0.700 pu
Range: 0.004 to 3.000 pu in steps of 0.001
AUX UV1 CURVE:
Definite Time
Range: Definite Time, Inverse Time
AUX UV1 DELAY:
1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
AUX UV1 MINIMUM:
VOLTAGE: 0.100 pu
Range: 0.000 to 3.000 pu in steps of 0.001
AUX UV1 BLOCK:
Off
Range: FlexLogic operand
AUX UV1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
AUX UV1 EVENTS:
Disabled
Range: Disabled, Enabled
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