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GE EPM 5300 User Manual Page 37

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CHAPTER 5: OVERVIEW
GE Multilin EPM 5000 series Advanced Power Meters 33
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWH
KVAH
AC VOLTS
AC AMPS
POWER
NCBA
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
a. To access the set limit, press MAX/MIN/LIMITS
• 3 times for LM1
• 4 times for LM2
5.9: Voltage Phase Reversal and Imbalance
In a three-phase power distribution system, normal phase shift between each line is 120°. If the EPM
5300P detects an abnormality, it displays a message of PH. The EPM 5200P does not have this feature.
VOLTAGE PHASE REVERSAL: If there is an incorrect connection, such as mistaking line A for line B, a
PH message appears. The correct sequence is a-b-c.
VOLTAGE PHASE IMBALANCE LIMIT: This is detected using the phase imbalance limit in the
Programming Mode. The phase imbalance is expressed as a percentage, with 0% indicating a 120°
phase shift between each line. A PH message appears if the limit is exceeded.
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWHKVAH
AC VOLTS
AC AMPS
POWER
NCBA
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWH
KVAH
AC VOLTS
AC AMPS
POWER
NC
B
A
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWH
KVAH
AC VOLTS
AC AMPS
POWER
NCBA
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
MAX/MIN
LIMITS
KVAR
PF
KW
KVA
FREQ
KWH
KVAH
AC VOLTS
AC AMPS
POWER
NCBA
MAX
MIN
A
N
B
N
C
N
A
B
B
C
C
A
LM2
LM1
NEXT
PHASE
VOLTS
AMPS
POWER
Step 1:
a. Press and hold down
PHASE/NEXT. While
holding down
PHASE/NEXT, press
AMPS to access the
display.
!(PH indicates both
Voltage Phase
Reversals and Voltage
Phase Imbalances.)
Step 2:
a. Press PHASE/NEXT
to select zero.
! This display
indicates a Voltage
Phase Reversal.
! This display
indicates a Voltage
Phase Imbalance.
Note
: In the event Voltage Phase Reversal and Voltage Phase Imbalance occur simultaneously,
the display alternates between the incorrect phase sequence and the exceeded limit
percentage. After six seconds the display returns to the normal operating mode.
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