GE Multilin L60, Instruction Manual

Page: 333 / 752

GE Multilin L60 Line Phase Comparison System 5-203
5 SETTINGS 5.5 GROUPED ELEMENTS
5
Figure 5–95: PHASE DIRECTIONAL SCHEME LOGIC
5.5.9 NEUTRAL CURRENT
a) MAIN MENU
PATH: SETTINGS

GROUPED ELEMENTS

SETTING GROUP 1(6)

NEUTRAL CURRENT
The L60 Line Phase Comparison System has two (2) Neutral Time Overcurrent, two (2) Neutral Instantaneous Overcurrent,
and two (2) Neutral Directional Overcurrent elements. These elements are described in the following sub-sections.

NEUTRAL CURRENT


NEUTRAL TOC1

See page 5–204.
MESSAGE
 NEUTRAL TOC2

See page 5–204.
MESSAGE
 NEUTRAL IOC1

See page 5–205.
MESSAGE

NEUTRAL IOC2

See page 5–205.
MESSAGE

NEUTRAL

DIRECTIONAL 1
See page 5–206.
MESSAGE

NEUTRAL

DIRECTIONAL 2
See page 5–206.
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
SETTING
SETTING
SETTING
SETTING
SETTING
SETTING
PHASE DIR 1
FUNCTION:
PHASE DIR 1 SOURCE:
PHASE DIR 1 BLOCK OC
WHEN V MEM EXP:
PHASE DIR 1
BLOCK:
PHASE DIR 1 ECA:
PHASE DIR 1 POL V
THRESHOLD:
PH DIR1 BLK A
PH DIR1 BLK B
PH DIR1 BLK C
PH DIR1 BLK
IA
No
Seq=ABC Seq=ACB
Yes
VBC VCB
827078A7.CDR
Off=0
V MINIMUM
-Use V when V Min
-Use V memory when
V < Min
I 0.05 pu
Enabled=1
AND
AND
OR
MEMORY TIMER
1 cycle
1 sec
Vpol
0
I
1
RUN AND
PHASE B LOGIC SIMILAR TO PHASE A
PHASE C LOGIC SIMILAR TO PHASE A
OR
USE ACTUAL VOLTAGE
USE MEMORIZED VOLTAGE