GE M60 UR Series

5-184 M60 Motor Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
Figure 5–87: PHASE DIRECTIONAL SCHEME LOGIC
5.6.7 NEUTRAL CURRENT
a) MAIN MENU
PATH: SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  NEUTRAL CURRENT
The M60 Motor Protection System has up to eight (8) neutral instantaneous overcurrent elements (dependent on CT/VT
modules ordered) and two (2) neutral directional overcurrent elements.
 NEUTRAL CURRENT

 NEUTRAL IOC1

See page 5-185.
MESSAGE
 NEUTRAL IOC2

See page 5-185.

MESSAGE
 NEUTRAL IOC8

See page 5-185.
MESSAGE
 NEUTRAL
 DIRECTIONAL 1
See page 5-186.
MESSAGE
 NEUTRAL
 DIRECTIONAL 2
See page 5-186.
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