GE D30 series Instruction Manual page 299

5 SETTINGS
e) NEGATIVE SEQUENCE OVERVOLTAGE (ANSI 59Q, IEC PTOV)

PATH: SETTINGS GROUPED ELEMENTS
 NEG SEQ OV1

MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
There are three negative-sequence overvoltage elements available.
The negative-sequence overvoltage element may be used to detect loss of one or two phases of the source, a reversed
phase sequence of voltage, or a non-symmetrical system voltage condition.
SETTING
NEG SEQ OV1
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
NEG SEQ OV1 BLOCK:
Off = 0
SETTING
NEG SEQ OV1 SIGNAL
SOURCE:
Wye VT
Delta VT
V_2 3 × V_2
Figure 5–94: NEGATIVE-SEQUENCE OVERVOLTAGE SCHEME LOGIC
GE Multilin

SETTING GROUP 1(6)
NEG SEQ OV1
FUNCTION: Disabled
NEG SEQ OV1 SIGNAL
SOURCE: SRC 1
NEG SEQ OV1 PICKUP:
0.300 pu
NEG SEQ OV1 PICKUP
DELAY: 0.50 s
NEG SEQ OV1 RESET
DELAY: 0.50 s
NEG SEQ OV1 BLOCK:
Off
NEG SEQ OV1 TARGET:
Self-reset
NEG SEQ OV1 EVENTS:
Disabled
SETTING
NEG SEQ OV1 PICKUP:
AND RUN
≥
V_2 or 3 × V_2 PKP
D30 Line Distance Protection System
5.6 GROUPED ELEMENTS
 
VOLTAGE ELEMENTS NEG SEQ OV1(3)
Range: Disabled, Enabled
Range: SRC 1, SRC 2
Range: 0.000 to 1.250 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
SETTINGS
NEG SEQ OV1 PICKUP
DELAY:
NEG SEQ OV1 RESET
DELAY:
t
PKP
t
RST
FLEXLOGIC OPERANDS
NEG SEQ OV1 PKP
NEG SEQ OV1 DPO
NEG SEQ OV1 OP
827839A3.CDR
5-179
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