Neutral Current - GE G30 Instruction Manual

5.6 GROUPED ELEMENTS
SETTING
PHASE DIR 1
FUNCTION:
Disabled=0
Enabled=1
SETTING
AND
PHASE DIR 1
BLOCK:
Off=0
SETTING
PHASE DIR 1 SOURCE:
IA
Seq=ABC Seq=ACB
VBC VCB
SETTING
PHASE DIR 1 BLOCK OC
WHEN V MEM EXP:
No
Yes
5
PHASE B LOGIC SIMILAR TO PHASE A
PHASE C LOGIC SIMILAR TO PHASE A
a) MAIN MENU

PATH: SETTINGS GROUPED ELEMENTS
 NEUTRAL CURRENT

5-148
I 0.05 pu
SETTING
PHASE DIR 1 POL V
THRESHOLD:
-Use V when V Min
-Use V memory when
MEMORY TIMER
V < Min
1 cycle
V MINIMUM
USE ACTUAL VOLTAGE
USE MEMORIZED VOLTAGE
Figure 5–59: PHASE DIRECTIONAL SCHEME LOGIC

SETTING GROUP 1(6)
 NEUTRAL TOC1

 NEUTRAL IOC1
MESSAGE

 NEUTRAL
MESSAGE
 DIRECTIONAL OC1
 NEUTRAL
MESSAGE
 DIRECTIONAL OC2
G30 Generator Protection System
SETTING
PHASE DIR 1 ECA:
AND RUN
0
Vpol
1
I
1 sec


NEUTRAL CURRENT

See page 5–149.
See page 5–150.
See page 5–151.
See page 5–151.
5 SETTINGS
FLEXLOGIC OPERAND
OR PH DIR1 BLK
FLEXLOGIC OPERAND
PH DIR1 BLK A
OR
AND
FLEXLOGIC OPERAND
PH DIR1 BLK B
FLEXLOGIC OPERAND
PH DIR1 BLK C
827078A6.CDR
5.6.5 NEUTRAL CURRENT
GE Multilin