Neutral Current - GE L90 Instruction Manual

5 SETTINGS
SETTING
PHASE DIR 1
FUNCTION:
Disabled=0
Enabled=1
SETTING
AND
PHASE DIR 1
BLOCK:
Off=0
SETTING
I 0.05 pu
PHASE DIR 1 SOURCE:
IA
Seq=ABC Seq=ACB
SETTING
VBC VCB
PHASE DIR 1 POL V
THRESHOLD:
-Use V when V
-Use V memory when
V < Min
V MINIMUM
SETTING
PHASE DIR 1 BLOCK OC
WHEN V MEM EXP:
No
Yes
PHASE B LOGIC SIMILAR TO PHASE A
PHASE C LOGIC SIMILAR TO PHASE A
a) MAIN MENU

PATH: SETTINGS GROUPED ELEMENTS
 NEUTRAL CURRENT

MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin
Min
MEMORY TIMER
1 cycle
1 sec
USE ACTUAL VOLTAGE
USE MEMORIZED VOLTAGE
Figure 5–96: PHASE DIRECTIONAL SCHEME LOGIC

SETTING GROUP 1(6)
 NEUTRAL TOC1

 NEUTRAL TOC2

 NEUTRAL IOC1

 NEUTRAL IOC2

 NEUTRAL
 DIRECTIONAL OC1
 NEUTRAL
 DIRECTIONAL OC2
L90 Line Current Differential System
SETTING
PHASE DIR 1 ECA:
AND RUN
0
Vpol
1
AND


NEUTRAL CURRENT

See page 5-192.
See page 5-192.
See page 5-193.
See page 5-193.
See page 5-194.
See page 5-194.
5.6 GROUPED ELEMENTS
FLEXLOGIC OPERAND
OR PH DIR1 BLK
FLEXLOGIC OPERAND
PH DIR1 BLK A
OR
FLEXLOGIC OPERAND
PH DIR1 BLK B
FLEXLOGIC OPERAND
PH DIR1 BLK C
827078A6.CDR
5.6.9 NEUTRAL CURRENT
5-191
5