GE D60 Instruction Manual page 238

5.5 GROUPED ELEMENTS
e) NEGATIVE SEQUENCE OVERVOLTAGE (ANSI 59_2)
PATH: SETTINGS GROUPED ELEMENTS
NEG SEQ OV
The negative sequence overvoltage element may be used to detect loss of one or two phases of the source, a reversed
5
phase sequence of voltage, or a non-symmetrical system voltage condition.
SETTING
NEG SEQ OV
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
NEG SEQ OV BLOCK:
Off = 0
SETTING
NEG SEQ OV SIGNAL
SOURCE:
Source VT=Wye Source VT=Delta
V_2 3 V_2
5-148
SETTING GROUP 1(6)
NEG SEQ OV
FUNCTION: Disabled
NEG SEQ OV SIGNAL
MESSAGE
SOURCE: SRC 1
NEG SEQ OV
MESSAGE
PICKUP: 0.300 pu
NEG SEQ OV PICKUP
MESSAGE
DELAY:
NEG SEQ OV RESET
MESSAGE
DELAY:
NEG SEQ OV BLOCK:
MESSAGE
Off
NEG SEQ OV
MESSAGE
TARGET: Self-reset
NEG SEQ OV
MESSAGE
EVENTS: Disabled
SETTING
NEG SEQ OV PICKUP:
AND RUN
V_2 or 3 V_2
*
*
Figure 5–91: NEG SEQ OV SCHEME LOGIC
D60 Line Distance Relay
VOLTAGE ELEMENTS
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.000 to 1.250 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
0.50 s
Range: 0.00 to 600.00 s in steps of 0.01
0.50 s
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
SETTINGS
NEG SEQ OV PICKUP
DELAY:
NEG SEQ OV RESET
DELAY:
t
PKP
t
RST
> =
PKP
5 SETTINGS
NEG SEQ OV
FLEXLOGIC OPERANDS
NEG SEQ OV PKP
NEG SEQ OV DPO
NEG SEQ OV OP
827839A2.CDR
GE Multilin