Chapter 4 EPM3000P Overview
AC VOLTS
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| A B C A B C | |||||
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| I I I | I I I | ||||
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| N N N B C A | |||||
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005 |
| AC AMPS |
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| A B C N | ||||||||||||
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| MAX MIN |
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| LM1 |
| LM2 | ||||||
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| MAX/MIN | VOLTS | AMPS | PHASE |
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| LIMITS | PROG | NEXT |
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| _ | AC VOLTS |
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| A B C A B C |
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| I I I | I I I |
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| N N N B C A |
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| AC AMPS |
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| A B C N |
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| MAX |
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| LM1 | LM2 |
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| MIN |
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| MAX/MIN | VOLTS | AMPS | PHASE |
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| LIMITS | PROG | NEXT |
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Step 3:
a. Press PHASE/NEXT each time the appropriate password number appears.
Step 4:
ÖUpon entering the correct password, the display blanks and a checkmark appears, confirming successful reset.
4.3ACCESSING THE LM1/LM2 SET LIMITS FROM OPERATING MODE
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
If a limit is exceeded, the annunciator LM1 and/or LM2 indicator glow and the display flashes, alternating between the instantaneous reading.
ÖTo VIEW THE SETUP OF THE LM1/LM2 SET LIMITS OF THE FUNCTIONS, follow these steps:
AC VOLTS
I25.0 AI BI CI AI BI CI N N N B C A
AC AMPS
A B C N
MAX MIN | LM1 LM2 | |||||
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AC VOLTS
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| A B C A B C |
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| I I I I I I |
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| N N N B C A |
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| l i | AC AMPS |
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| A B C N |
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MAX MIN |
| LM1 LM2 |
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AC VOLTS
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| A B C A B C |
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| I I I I I I |
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| N N N B C A |
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| l i | AC AMPS |
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| A B C N |
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MAX MIN |
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MAX/MIN PRINT LIMITS PROG
VOLTS AMPS
PHASE NEXT
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| MAX/MIN | VOLTS | AMPS | PHASE |
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| LIMITS | PROG | NEXT |
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| MAX/MIN | VOLTS | AMPS | PHASE |
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| LIMITS | PROG | NEXT |
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Step 1: | Step 2: | Step 3: |
a. To access the set limit, press | a. Press PHASE/NEXT when the | a. Press PHASE/NEXT when the |
MAX/MIN/ LIMITS: | LM1 annunciator glows. | LM2 annunciator glows. |
ÖTHREE times for LM1 | ÖThe annunciators that glow are | ÖThe annunciators that glow are |
ÖFOUR times for LM2 |
4.4VOLTAGE PHASE REVERSAL AND IMBALANCE FROM OPERATING MODE
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
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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GE Industrial Systems