GE EPM 3000P User manual

EPM 3000P
THREE-PHASE DIGITAL VOLT/AMPS MONITOR
EPM 3000P –F
THREE-PHASE VOLTS/AMPS/FREQUENCY MONITOR
Instruction Manual
g
GE Industrial System
NORTH AMERICA
GE Industrial Systems, 41 Woodford Avenue, Plainville, CT 06062
Internet: http: www.geindustrial.com

All Rights Reserved.
Printed in the United States of America.
NORTH AMERICA
GE Industrial Systems, 41 Woodford Avenue, Plainville, CT 06062
Internet: http: www.geindustrial.com

Customer Service and Support
Customer service and support is available 24 hours a day, 7 days a week.
Please have the model, serial number and a detailed problem description available. If the
problem concerns a particular reading, please have all meter readings available.
For customer or technical assistance, call: 1-888-GE4SERVICE (1-888-434-7378).
Product Warranty
GE warrants all products to be free from defects in material, workmanship and title and will be of
the kind and quality specified in GE’s written description in the manual. The foregoing shall
apply only to failures to meet said warranties which appear within one year from the date of
shipping. During the warranty period, GE will, at its option, either repair or replace any product
that proves to be defective.
Limitation of Warranty
This warranty does not apply to defects resulting from unauthorized modification, misuse or use
for any reason other than electrical power monitoring.
OUR PRODUCTS ARE NOT TO BE USED FOR PRIMARY OVER-CURRENT
PROTECTION. ANY PROTECTION FEATURE IN OUR PRODUCTS IS TO BE
USED FOR ALARM OR SECONDARY PROTECTION ONLY.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANABILITY OR FITNESS FOR A PARTICULAR PURPOSE. GE
SHALL NOT BE LIABLE FOR ANY PENAL, INDIRECT, SPECIAL OR
CONSEQUENTIAL DAMAGES ARISING FROM ANY AUTHORIZED OR
UNAUTHORIZED USE OF ANY GE PRODUCT. LIABILITY SHALL BE
LIMITED TO THE ORIGINAL COST OF THE PRODUCT SOLD.
Statement of Calibration
Our instruments are inspected and tested in accordance with specifications published by an
independent testing facility. The accuracy and a calibration of our instruments are traceable to
the National Institute of Standards and Technology through equipment that is calibrated at
planned intervals by comparison to certified standards.
Disclaimer
The information presented in this publication has been carefully checked for reliability; however,
no responsibility is assumed for inaccuracies. The information contained in this document is
subject to change without notice.
GE Industrial Systems i

TABLE OF CONTENTS
I N S T A L L A T I O N & O P E R A T I O N
CHAPTER 1 MECHANICAL INSTALLATION 1
Installation of the EPM3000P with K-110 Option for limited space
conditions
1
Standard Installation of the EPM3000P 1
Standard Cutout of EPM3000P 2
Communication Converter Installation or DC Output
2
CHAPTER 2 ELECTRICAL INSTALLATION 3
Section 2.1 Connecting the Current Circuit 3
2.2 Connecting Voltage Circuit of Potential Transformer 3
2.3 Selecting the Voltage Fuses 3
2.4 Connection to the Main Power Supply 3
2.5 Electrical Connection Installation 4
3-Phase, 3-Wire Delta with Direct Voltage and CTs 5
3-Phase, 3-Wire Open Delta with 2 CTs and 2 PTs 5
3-Phase, 3-Wire Open Delta with 3 CTs and 2 PTs 6
3-Phase, 4-Wire Wye with Direct Voltage and CTs 6
3-Phase, 4-Wire Wye with CTs and PTs 7
Single Phase System 7
Dual Phase System 8
2.6 Relays and Protection
8
CHAPTER 3 COMMUNICATION INSTALLATION 10
Section 3.1 RS-232C 10
3.2 RS-485 10
CHAPTER 4 EPM3000P: OVERVIEW 13
Section 4.1 Accessing Max/Min Values 13
4.2 Resetting Values 14
4.3 Accessing the LM1/LM2 Set Limits 15
4.4 Voltage Phase Reversal and Imbalance 15
4.5 Printing Operating Data 16
4.6 Printing Programming Data 17
4.7 Accessing LED Test 18
4.8 Accessing Firmware Versions 18
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TABLE OF CONTENTS
P R O G R A M M I N G
CHAPTER 5 GENERAL PROCEDURE OVERVIEW 19
Section 5.1 How to Use This Portion of the Manual 19
5.2 Switch Packs 19
5.3 Programming Mode Entry 20
5.4 Standard Numeric Data Entry 20
CHAPTER 6 ENTERING THE PROGRAMMING MODE 21
Section 6.1 Checksum Error - Protective Mechanism 21
6.2 Password Entry 21
CHAPTER 7 PROGRAMMING GROUP 0: GLOBAL METER SETUP 22
Section 7.1 The Integration Interval 22
7.2 The Meter Address 23
7.3 Communication Baud Rate 23
7.4 System Configuration 24
7.5 Programming Procedure 26
7.6 Time Delay For Relays 1 & 2
26
CHAPTER 8 PROGRAMMING GROUP 1 29
Section 8.1 Scale Selections & Full Scale Settings 29
8.2 Full Scale Settings, Volt & Amp Channels, Volt & Amp Decimal
Placement
29
CHAPTER 9 PROGRAMMING GROUP 2: METER CALIBRATION 31
Section 9.1 Standard Calibration 31
9.2 High End Calibration of Voltage Channels, High & Low End
Calibration of Amperage Channels
32
CHAPTER 10 PROGRAMMING GROUP 4: SET LIMITS & RELAYS 34
Section 10.1 Trip Relay
34
CHAPTER 11 PROGRAMMING GROUP 7: PHASE REVERSAL & PHASE
IMBALANCE SET LIMITS/RELAYS
38
Section 11.1 Voltage Phase Reversal & Phase Imbalance 38
11.2 Trip Relay 38
11.3 Voltage Phase Reversal Detection 39
11.4 Percentage Voltage Phase Imbalance
40
CHAPTER 12 EXITING THE PROGRAMMING MODE 41
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INSTALLATION & OPERATION
CHAPTER 1
MECHANICAL INSTALLATION
The following diagrams display the various possible EPM3000P and EPM3000P-F mechanical installations and
Communication Converter installation. All illustrations are of the EPM3000P with notes on the F Model.
NOTE: ALL MEASUREMENTS ARE IN INCHES.
4.375
SQ.
0.890
2.45
2.425
0.336
0.714
(4) 8-32 SCREWS
4.50
SQ.
36" CABLE
0.80
3.00
5.00
MAX/MIN
LIMITS
AC VOLTS
N
C
BA
AC AMPS
MAX MIN LM2LM1
A
N
B
N
C
N
A
B
B
C
C
A
VOLTS
PRINT AMPS PHASE
NEXT
PROG
Diagram 1.1 Installation of the EPM3000P with K-110 Option for limited space conditions.
4.375
0.890
2.0
SQ.
4.50
SQ.
3.0
MAX/MIN
LIMITS
AC VOLTS
N
C
BA
AC AMPS
MAX MIN LM2LM1
A
N
B
N
C
N
A
B
B
C
C
A
VOLTS
PRINT AMPS PHASE
NEXT
PROG
Diagram 1.2 Standard Installation of the EPM3000P.
1
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Chapter 1 Mechanical Installation
FIRST PUT (16) PIN
CONNECTOR TOGETHER.
(2) 8-32 SCREWS WILL
SIDE VIEW
0.80
(4) 8-32 SCREWS
LINE UP WITH 2 PEMS
ON THE BACK PLATE.
0.198 DIA.
3.375
3.375
4.0 DIA.
1.6875
1.6875
RECOMMENDED
CUTOUT
BACK VIEW
Diagram 1.3 Standard cutout for EPM3000P.
W Port
Diagram 1.4 Optional Communication Converter or DC Output Module Installation
NOTE: CAREFULLY LINE UP THE GUIDE SCREW AND 8 PIN PORT CONNECTOR TO PREVENT PINS FROM BREAKING.
2
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CHAPTER 2
ELECTRICAL INSTALLATION
2.1 CONNECTING THE CURRENT CIRCUIT
The cable used for the current should be installed at 600V AC minimum. The cable connector should be rated at 6
Amps or greater, and it should have a cross-sectional area of 16 AWG.
The current transformers should be mounted as close as possible to the meter. The following table gives the
maximum recommended distances for various CT sizes, assuming the connection is made via 16 AWG cable.
CT SIZE (VA) MAXIMUM DISTANCE (CT TO EPM3000P)
2.5 VA 10 FEET
5.0 VA 15 FEET
7.5 VA 30 FEET
10.0 VA 40 FEET
15.0 VA 60 FEET
30.0 VA 120 FEET
WARNING: DO NOT LEAVE SECONDARY OF CT WHEN PRIMARY CURRENT IS FLOWING. THIS MAY CAUSE HIGH VOLTAGE,
WHICH OVERHEATS THE SECONDARY OF THE CT. IF THE CT IS NOT CONNECTED, PROVIDE A SHORTING BLOCK ON THE
SECONDARY OF THE CT.
2.2 CONNECTING VOLTAGE CIRCUIT OF POTENTIAL TRANSFORMER
For proper operation, the voltage connection must be maintained. If an error occurs, such as mistaking Line A for
Line B, a PH message appears, indicating a Phase Reversal (see Phase Imbalance and Reversal).
The cable required to terminate the voltage sense circuit should have an insulation rating greater than 600V AC and a
current rating greater than 0.1 A.
2.3 SELECTING THE VOLTAGE FUSES
We recommend using fuses, although connection diagrams do not show them. Slow blow, 200 mA rating fuses
should be used.
The maximum voltage EPM3000P can handle 150V phase to neutral. If Suffix -G is added to the model number, the
maximum voltage to be used is 300V phase to neutral.
2.4 CONNECTION TO THE MAIN POWER SUPPLY
The EPM3000P requires a separate power supply connection. Listed are the 5 different power supply options and
corresponding.
NOTE: FOR DC-POWERED UNITS POLARITY MUST BE OBSERVED. AN EARTH TO GROUND CONNECTION TO CHASSIS IS
MANDATORY FOR NORMAL OPERATION (TERMINAL 3). DO NOT GROUND THE UNIT THROUGH THE NEGATIVE OF THE DC SUPPLY.
SEPARATE GROUNDING IS REQUIRED.
POWER SUPPLY OPTIONS SUFFIXES CURRENT
120V AC NO SUFFIX .1 AAC
240V AC A .05 AAC
24V DC D .5 ADC
48V DC D1 .25 ADC
125V DC D2 .1 ADC
3
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Chapter 2 Electrical Installation
2.5 ELECTRICAL CONNECTION INSTALLATION
Choose the diagram that best suits your application and maintain the polarity. Follow the outlined
procedure to verify correct connection.
NOTE: THE NEUTRAL READING IS CALCULATED FROM THE SUM OF THE 3 PHASES OF CURRENT. HIGH NEUTRAL
CURRENT INDICATES REVERSE CT POLARITY.
LISTING OF CONNECTION DIAGRAMS
NOTE: SEE PHASE REVERSAL IF A MESSAGE OF PH APPEARS AFTER INSTALLATION.
I Three-Phase, Three-Wire System Delta with Direct Voltage and CTs.
II Three-Phase, Three-Wire Open Delta with two CTs and two PTs.
(Open Delta System Installation should only be used if the electrical system is a 3-wire OPEN
DELTA. Open Delta can be enabled or disabled in Programming Group 0, Function 3.)
III Three-Phase, Three-Wire Open Delta with three CTs and two PTs.
(Open Delta System Installation should only be used if the electrical system is a 3-wire OPEN
DELTA. Open Delta can be enabled or disabled in Programming Group 0, Function 3.)
IV Three-Phase, Four-Wire System Wye with Direct Voltage and CTs.
V Three-Phase, Four-Wire System Wye with CTs and PTs.
VI Single Phase System
VII Dual Phase System
4
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Chapter 2 Electrical Installation
+
-
POWER
7
6
5
4
3
2
1
8910 11 12 13
PORT
L1
L
LINE
ABC
LOAD
3-PHASE, 3-WIRE DELTA
BACK VIEW
WITH DIRECT VOLTAGE AND CTs
CONTROL
I. Three Phase System
CONTROL +
-
POWER
7
6
5
4
3
2
1
8910
11 12 13
PORT
L1
L
LINE
ABC
LOAD
3-PHASE, 3-WIRE OPEN DELTA
BACK VIEW
WITH 2 CTs AND 2 PTs
II. Open Delta PT Connection Special programming required.
5
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Chapter 2 Electrical Installation
+
-
POWER
7
6
5
4
3
2
1
8910
11 12 13
PORT
L1
L
LINE
ABC
LOAD
3-PHASE, 3-WIRE OPEN DELTA
BACK VIEW
WITH 3 CTs AND 2 PTs
III. Open Delta PT Connection Special programming required.
+
-
POWER
7
6
5
4
3
2
1
8910 11 12 13
PORT
L1
L
LINE
NA
BC
LOAD
3-PHASE, 4-WIRE WYE
BACK VIEW
WITH DIRECT VOLTAGE AND CTs
CONTROL
IV. Three Phase System
6
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Chapter 2 Electrical Installation
7
6
5
4
3
2
1
8910 11 12 13
LINE
NABC
LOAD
3-PHASE, 4-WIRE WYE
L1
L2
POWER
+
-
PORT
BACK VIEW
WITH CTs AND PTs
V. Three Phase System Wye System with PTs
+
-
POWER
7
6
5
4
3
2
1
8910
11 12 13
PORT
L2
L1
LINE
A
LOAD
SINGLE-PHASE
BACK VIEW
WITH CT AND PT CONNECTION
VI. Single-Phase System
7
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Chapter 2 Electrical Installation
7
6
5
4
3
2
1
8 9 10 11 12 13
LINE
A B
LOAD
DUAL-PHASE
WITH CTs AND Direct Voltage
L1
L2
POWER
+
-
PORT
BACK VIEW
N
VII. Dual-Phase System
2.6 RELAYS AND PROTECTION
NOTE: THIS SECTION IS APPLICABLE ONLY IF THE -NL RELAY OPTION WAS ORDERED.
The EPM3000P allows the user to access a variety of relay options through the programming mode. The relay option
package consists of two relays, which can be dedicated to alarm or communication (or both).
TIME DELAY: Sets off the alarm, alerting the user that an out-of-limits condition occurred during the defined time
limit. The time delay can be programmed for any desirable duration.
If the relays are dedicated to communication, there are two different modes:
Lock ON Relay will not be affected by any alarm condition.
Lock OFF Relay will not be affected by any alarm condition.
If the relays are used for communication and alarm, there are four different modes:
Lock ON Relay stays on regardless of any alarm condition.
Lock OFF Relay stays off regardless of any alarm condition.
Free ON Relay turns on unless other conditions force it off.
Free OFF Relay turns off unless other conditions force it on.
8
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Chapter 2 Electrical Installation
Figure 2.1 - Relay Connection
Close-up of the relays on the rear panel. The relays
shown are in the NOT energized state. (Form C relays,
rated 250V, 5A, 2 each)
20
21
22
23
24
25
N.O.
N.C.
COM
N.O.
N.C.
COM
ALARM #
1
ALARM #
2
THE INSTRUMENT CAN BE PROGRAMMED TO DETECT TWO ALARM LEVELS FOR THE FOLLOWING FUNCTIONS:
LM1/LM2 Voltage AN, BN, CN, AB, BC, CA
LM1/LM2 Current A, B, C, N
Voltage Imbalance (One level only)
Voltage Phase Reversals (One level only)
9
GE Industrial Systems

CHAPTER 3
COMMUNICATION INSTALLATION
3.1 RS-232C
All EPM3000P and EPM300P-F instruments can be equipped with: the EIA RS-232C or the EIA RS-485.
RS-232C communication links a single instrument with a computer or device such as an RTU or PLC. Its
capability is up to 100 feet. A standard 9-pin female serial port connector mounts on the instrument for
direct connection to a computer with a 9-pin cable.
NOTE: ONLY THREE PINS ARE USED IN RS-232C. (See Figure 3.1).
DB-9 CONNECTOR
A DIRECT PIN-TO-PIN CABLE CAN BE USED.
NO NULL MODEM IS REQUIRED.
COMMUNICATION
CONVERTER
Model
SF-232DB3
8 9 10 11 12 13
7
6
5
4
3
2
1
20
21
22
23
24
25
26
27
28
RS-232 COMMUNICATION CONNECTION
CONNECTION FOR DB-9 FEMALE
PIN 2 - RECEIVE OF THE HOST/COMPUTER
PIN 3 - TRANSMIT OF THE HOST/COMPUTER
PIN 5 - GROUND OF THE HOST/COMPUTER
54321
98 6
7
LAPTOP
DETAIL OF DB-9
BACK VIEW
Figure 3.1 RS-232C Communication Connection Installation
NOTE: TO AVOID GROUND LOOPS, THE NEUTRAL AND SAFETY GROUND (PIN 3) SHOULD BE CONNECTED
TOGETHER AT ONLY ONE POINT.
3.2 RS-485
NOTE: THIS SECTION APPLIES ONLY IF A COMMUNICATION OPTION WAS ORDERED.
Each EPM3000P has an unique address up to four digits long. This allows the user to communicate with
up to 10,000 instruments. Standard baud rates are available up to 4800 baud. To select the proper baud
rate, apply the following rules:
The unit operates up to 4800. For a smaller number of instruments over a long distance,
use a lower baud. Optimal recommended baud rate is 1200 baud if noisy conditions
exist.
10
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Chapter 3 Communication Installation
RS-485 is used to parallel multiple instruments on the same link. Its operating capability is up to 4000
feet.
• When only 2 wires are used (on the RS-485), the link can include up to 30 instruments, (Figure 3.2).
• When using all 4 wires, the link can include up to 60 instruments, (Figure 3.3).
RS-485 Hookup Diagram (2 wire) Half Duplex
3000P Instruments (rear view)










RT
RS-232
RS-485
RT
RS-485
Communications Port
Model#SF485DB
UNICOM 2500
(Bottom View Shown)
PC
Figure 3.2 2-Wire RS-485 Communication Connection Installation Half Duplex
NOTE: Communication is supported over Belden 3074F and Belden 9841 cable types.
11
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Chapter 3 Communication Installation



RS-485 Hookup Diagram (2 wire) Half Duplex: Detail View






GR+T+R-T- GR+T+R-T-
RS-485
Communications
Port
Model#
SF485DB
RS-485
Communications
Port
Model#
SF485DB
RT
RS-232 RS-485
Gnd
R+
T+
R-
T-
UNICOM 2500
(Bottom View Shown)
Figure 3.3 2-Wire RS-485 Communication Connection Installation Half Duplex Detailed View
NOTE: Communication is supported over Belden 3074F and Belden 9841 cable types.
12
GE Industrial Systems

CHAPTER 4
EPM3000P OVERVIEW
The EPM3000P and EPM3000P-F measure 10 electrical parameters. Values for each parameter are accessed
through the keypad on the meter's front panel (See Figure 4.1). The meters illustrated throughout the manual are
EPM3000P except for Figure 4.1 below. The EPM3000P-F (Frequency Option) displays the Frequency measurement
on the face of the meter. Max, Min and Limits indicators are on the left side of the face.
VOLTS AMPS
A-N A
B-N B
C-N C
A-B N
B-C
C-A
MAX
MIN
LM1
LM2
AC VOLTS
FREQUENCY
A B C N
AC AMPS
MAX/MIN
LIMITS VOLTS
PRINT
PROG
PHASE
NEXT
I20
AMPS
B C A
I I I
A B C
N N N
I I I
A B C
I000
60.0
A GLOWING
ANNUNCIATOR INDICATES
THE VALUE CURRENTLY
DISPLAYED
PRESS THE MAX/MIN/LIMITS
BUTTON TO ACCESS
MAXIMUM, MINIMUM, LIMIT 1
OR LIMIT 2 VALUES.
FREQUENCY
MEASUREMENT
AVAILABLE WHEN
ORDERED WITH
OPTION -F.
THE VOLTAGE AND AMPERAGE
FUNCTIONS ARE ACCESSED BY PRESSING
THE APPROPRIATE BUTTON.
WHEN THE DESIRED
FUNCTION IS CHOSEN, THE
PHASE/NEXT BUTTON
SELECTS THE VOLT AND
AMP PHASES.
Figure 4.1 : EPM3000P –F (FREQUENCY OPTION)
4.1 ACCESSING MAX/MIN VALUES FROM OPERATING MODE
The max/min values represent the highest and lowest average demand over a user programmable time period, know
as the INTEGRATION INTERVAL. The readings are calculated using a rolling average technique. Each second, a
new reading is used to calculate the max/min and the last reading of the interval is dropped.
ÖTo ACCESS MAX/MIN VALUES, 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
LM1MIN
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
LM1MIN
i000
i20
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
LM1MIN
i000
i24
Step 1:
a. Press VOLTS to select the VOLTS
category.
Step 2:
a. Press PHASE/ NEXT until the
desired phase is selected.
Step 3:
a. Press MAX/MIN/ LIMITS:
ÖONCE for max of VOLT A-N
ÖTWICE for min of VOLTS A-N
13
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Chapter 4 EPM3000P Overview
4.2 RESETTING VALUES FROM OPERATING MODE
Use the reset function if a new value is desired. It is available in two different modes:
1. UNPROTECTED MODE: allows quick and easy resetting of max/min values.
2. PROTECTED MODE: prevents unauthorized personnel from resetting the max/min.
UNPROTECTED RESET
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
LM1MIN
i20
i000
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
LM1MIN
i24
i020
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
LM1MIN
_
_
_
__
Step 1:
a. Press PHASE/NEXT to select the
desired phase.
Step 2:
a. Press MAX/MIN/LIMITS:
ÖONCE for max
ÖTWICE for min
Step 3:
a. Press PHASE/NEXT to reset.
ÖThe display blanks and a
checkmark appears, confirming
successful reset.
PROTECTED RESET
NOTE: IF THE METER WAS PROGRAMMED TO HAVE A PROTECTED RESET, A PASSWORD MUST BE ENTERED BEFORE ANY
READINGS MAY BE RESET. THE PASSWORD IS 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
LM1MIN
i20
i000
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
LM1MIN
0
___
Step 1:
a. Press PHASE/NEXT to select the desired phase.
b. Press MAX/MIN/LIMITS:
ÖONCE for max
ÖTWICE for min
Step 2:
a. Press PHASE/NEXT to commence the Protected
reset.
ÖThe display blanks, three dashes appear in lower
display and digits begin scrolling in upper display.
ÖThe password required is 005.
GE Industrial Systems
14

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
LM1MIN
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
LM1MIN
_
_
_
__
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.
4.3 ACCESSING 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 -NL).
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:
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
LM1MIN
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
LM1MIN
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
LM1MIN
l i
Step 1:
a. To access the set limit, press
MAX/MIN/ LIMITS:
ÖTHREE times for LM1
ÖFOUR times for LM2
Step 2:
a. Press PHASE/NEXT when the
LM1 annunciator glows.
ÖThe annunciators that glow are
out-of-limits in LM1.
Step 3:
a. Press PHASE/NEXT when the
LM2 annunciator glows.
ÖThe annunciators that glow are
out-of-limits in LM2.
4.4 VOLTAGE 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 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.
GE Industrial Systems
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