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Chapter 11 Phase Reversal & Phase Imbalance Set Limits/Relays
11.4 G
ROUP
7, F
UNCTION
1:
P
ERCENTAGE
V
OLTAGE
P
HASE
I
MBALANCE
ÖTo change
PERCENTAGE VOLTAGE PHASE IMBALANCE
, 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
7 I.
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.
a.
Press MAX/MIN/LIMITS until 71. appears in upper
display.
ÖLower display indicates the current Percentage Voltage
Phase Imbalance.
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS
PRINT
PROG
PHASE
NEXT
7 I
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
7 I
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
LM2
LM1MIN
_
_
.
I
Step 3
:
a.
Press VOLTS once.
b.
Press PRINT/PROG to change current Set
Above/Below, Trip Relay 1, and Trip Relay 2 settings.
Ö
This toggles the segments UP (above limit) or DOWN
(below limit).
c.
Press VOLTS to store.
Step 4
:
a.
Press VOLTS to activate the Percentage Voltage
Phase Imbalance.
b.
Press PRINT/PROG to scroll through the digits.
• Press PRINT/PROG once and the blank signifies a
zero.
• Press PRINT/PROG twice and 1 appears.
c.
Press VOLTS to store.
NOTE
: P
RESS
PHASE/NEXT
TO TOGGLE BETWEEN
NUMBERS AND SEGMENTS
. I
F A NUMBER GREATER THAN
5
IS
ENTERED
,
THE METER DEFAULTS TO
5.
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS
PRINT
PROG
PHASE
NEXT
7 I.
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
LM2
LM1MIN
I0.0
Ö
Lower display indicates the new setting.
See Chapter 12 to Exit.
40
GE Industrial Systems