GE EPM 3000P - Manual (Page 20)

Chapter 4 EPM3000P Overview
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS PRINT
PROG PHASE
NEXT
AMPS
B C A I I I
A B C
N N N I I I
A B C
LM2 LM1 MIN
005
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS VOLTS PRINT
PROG PHASE
NEXT AMPS
B C A I I I
A B C
N N N I I I
A B C
LM2 LM1 MIN
_
_
_
_
_
Step 3:
a. Press PHASE/NEXT each time the appropriate
password number appears. Step 4:
Ö
Upon entering the correct password, the display blanks
and a checkmark appears, confirming successful reset.
4.3 A CCESSING THE LM1/LM2 S ET L IMITS FROM O PERATING M ODE
The DMVA100 is designed with two manual set limits. The set limits monitor the instantaneous readings, warning the
user of abnormal conditions. Each limit can detect readings above or below the set level. SET LIMITS: the point when
the relay changes position, if the DMVA100 is equipped with the Relay Option (Suffix -NL).
If a limit is exceeded, the annunciator LM1 and/or LM2 indicator glow and the display flashes, alternating between the
instantaneous reading.
Ö To VIEW THE SETUP OF THE LM1/LM2 SET LIMITS OF THE FUNCTIONS, follow these steps:
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS PRINT
PROG PHASE
NEXT
AMPS
B C A I I I
A B C
N N N I I I
A B C
LM2 LM1 MIN
I25.0
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS PRINT
PROG PHASE
NEXT
AMPS
B C A I I I
A B C
N N N I I I
A B C
LM2 LM1 MIN
l i
MAX
AC VOLTS
A B C N
AC AMPS
MAX/MIN
LIMITS
VOLTS PRINT
PROG PHASE
NEXT
AMPS
B C A I I I
A B C
N N N I I I
A B C
LM2 LM1 MIN
l i
Step 1:
a. To access the set limit, press
MAX/MIN/ LIMITS:
Ö
THREE times for LM1
Ö FOUR times for LM2
Step 2:
a. Press PHASE/NEXT when the
LM1 annunciator glows.
Ö
The annunciators that glow are
out-of-limits in LM1.
Step 3:
a. Press PHASE/NEXT when the
LM2 annunciator glows.
Ö
The annunciators that glow are
out-of-limits in LM2.
4.4 V OLTAGE P HASE R EVERSAL AND I MBALANCE FROM O PERATING M ODE
In a three phase power distribution system, the normal phase shift between each line is 120 °. The EPM3000P
detects an abnormality and displays a PH message every six seconds.
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:
Can be detected using the phase imbalance limit in the Programming Mode. The phase imbalance is expressed in a
percentage with 0% indicating a 120
° phase shift between each line. A PH message appears if the limit is exceeded.
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