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CHAPTER 2
E
I
LECTRICAL
NSTALLATION
2.1
C
ONNECTING THE
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)
2.5 VA
5.0 VA
7.5 VA
10.0 VA
15.0 VA
30.0 VA
WARNING:
DO NOT
LEAVE SECONDARY OF
WHICH OVERHEATS THE SECONDARY OF THE
CT.
SECONDARY OF THE
2.2
C
V
ONNECTING
OLTAGE
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
S
V
ELECTING THE
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
C
ONNECTION TO THE
The EPM3000P requires a separate power supply connection. Listed are the 5 different power supply options and
corresponding.
NOTE: F
DC-
OR
POWERED UNITS POLARITY MUST BE OBSERVED
MANDATORY FOR NORMAL OPERATION
S
EPARATE GROUNDING IS REQUIRED
POWER SUPPLY OPTIONS
120V AC
240V AC
24V DC
48V DC
125V DC
C
C
URRENT
IRCUIT
MAXIMUM DISTANCE (CT TO EPM3000P)
10 F
EET
15 F
EET
30 F
EET
40 F
EET
60 F
EET
120 F
EET
CT
WHEN PRIMARY CURRENT IS FLOWING
CT. I
CT
F THE
C
P
IRCUIT OF
OTENTIAL
F
OLTAGE
USES
M
P
S
AIN
OWER
UPPLY
(
3). D
TERMINAL
O NOT GROUND THE UNIT THROUGH THE NEGATIVE OF THE
.
SUFFIXES
GE Industrial Systems
,
IS NOT CONNECTED
PROVIDE A SHORTING BLOCK ON THE
T
RANSFORMER
. A
N EARTH TO GROUND CONNECTION TO CHASSIS IS
N
S
O
UFFIX
A
D
D1
D2
. T
HIS MAY CAUSE HIGH VOLTAGE
DC
SUPPLY
CURRENT
.1 AAC
.05 AAC
.5 ADC
.25 ADC
.1 ADC
,
.
3
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