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Chapter 11 Phase Reversal & Phase Imbalance Set Limits/Relays
11.3 G
ROUP
7, F
UNCTION
0: V
OLTAGE
P
HASE
R
EVERSAL
D
ETECTION
ÖTo change the
PHASE REVERSAL
settings, follow these steps:
NOTE: PRESS
MAX/MIN/LIMITS
, AT ANY TIME, TO CANCEL BEFORE STORING THE LAST DIGIT OR SWITCH
.
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS
PRINT
PROG
PHASE
NEXT
7.
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
LM2
LM1MIN
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS
PRINT
PROG
PHASE
NEXT
70.
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
LM2
LM1MIN
_
_
_
Step 1
:
a.
Enter Group Level of Programming Mode
(see Chapter 2).
b.
Press MAX/MIN/LIMITS until 7. appears in upper
display.
c.
Press VOLTS to activate the Group.
Ö
70. appears in upper display.
ÖLower display indicates current settings for
Enable/Disable Phase Reversal Detection.
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS
PRINT
PROG
PHASE
NEXT
70
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
LM2
LM1MIN
_
_
_
Step 2
:
a.
Press VOLTS once.
ÖThree dashes appear in lower display.
b.
Press PRINT/PROG to change current Set
Above/Below, Trip Relay 1, and Trip Relay 2 settings.
ÖThis toggles the segments UP (above limit) or DOWN
(below limit).
c.
Press VOLTS to store.
39
GE Industrial Systems