GE D60 Instruction Manual page 186

5.5 GROUPED ELEMENTS
non-directional applications (
the non-directional zone. See Chapter 8 and 9 for additional details and information on calculating this setting value for
applications on series compensated lines.
• GND DIST Z1 DELAY: This setting enables the user to delay operation of the distance elements and implement a
stepped distance backup protection. The distance element timer applies a short drop out delay to cope with faults
located close to the boundary of the zone when small oscillations in the voltages and/or currents could inadvertently
reset the timer.
• GND DIST Z1 BLK: This setting enables the user to select a FlexLogic™ operand to block the given distance element.
VT fuse fail detection is one of the applications for this setting.
SETTINGS
GND DIST Z1 FUNCTION:
Disable=0
Enable=1
SETTING
GND DIST Z1 BLK:
Off=0
SETTING
5
DISTANCE SOURCE:
IA
IB
IC
VT CONNECTION
WYE DELTA
VAG-VBG VAB
VBG-VCG VBC
VCG-VAG VCA
I_2
I_0
V_1
I_1
IN
5-96
set to "Non-directional"), this setting applies only to the forward reach of
GND DIST Z1 DIR
SETTINGS
GND DIST Z1 DIR:
GND DIST Z1 SHAPE:
GND DIST Z1 Z0/Z1 MAG:
GND DIST Z1 Z0/Z1 ANG:
GND DIST Z1 Z0M/Z1 MAG:
GND DIST Z1 Z0M/Z1 ANG:
GND DIST Z1 REACH:
GND DIST Z1 RCA:
GND DIST Z1 REV REACH
GND DIST Z1 REV REACH RCA
GND DIST Z1 POL CURRENT
GND DIST Z1 NON-HOMOGEN ANG
GND DIST Z1 COMP LIMIT:
GND DIST Z1 DIR RCA:
AND
GND DIST Z1 DIR COMP LIMIT:
GND DIST Z1 QUAD RGT BLD:
GND DIST Z1 QUAD RGT BLD RCA:
GND DIST Z1 QUAD LFT BLD:
GND DIST Z1 QUAD LFT BLD RCA:
GND DIST Z1 VOLT LEVEL:
RUN
A ELEMENT
RUN
B ELEMENT
RUN
C ELEMENT
MEMORY
V_1 > 0.80pu
1 CYCLE
OR
I_1 > 0.025pu
SETTING
GND DIST Z1
SUPV:
RUN
IN
Figure 5–52: GROUND DISTANCE Z1 SCHEME LOGIC
D60 Line Distance Relay
QUAD ONLY
FLEXLOGIC OPERAND
OPEN POLE OP A Φ
FLEXLOGIC OPERAND
OPEN POLE OP B Φ
FLEXLOGIC OPERAND
OPEN POLE OP C Φ
1 CYCLE
FLEXLOGIC OPERAND
GND DIST Z1 SUPN IN
PICKUP
5 SETTINGS
FLEXLOGIC OPERANDS
AND GND DIST Z1 PKP A
GND DIST Z1 DPO A
AND GND DIST Z1 PKP B
GND DIST Z1 DPO B
AND GND DIST Z1 PKP C
GND DIST Z1 DPO C
OR GND DIST Z1 PKP
837007AC.CDR
GE Multilin