E-Mon D-Mon Class 1000 User manual

62-0388-01
INSTALLATION INSTRUCTIONS
Class 1000 Meter
SINGLE PHASE kWh METER
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 -
TestEquipmentDepot.com

62-0388-01 2

CLASS 1000 METER
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TABLE OF CONTENTS
Section 1.0 Pre-Installation Information 4
Section 1.1 Internal Electronic Assemblies 5
Section 1.2 Main Power Board 6
Section 1.3 Display Board 6
Section 2.0 Safety Label Definitions and Information 6
Section 3.0 Precautionary and Safety Information 7
Section 4.0 Meter Installation 8
Section 4.1 Mounting the Meter 8
Section 4.2 Main Power Board Connections 8
Section 4.3 Current Sensor Installation & Wiring 11
Section 4.4 Installing the Split-Core Current Sensor Assembly 12
Section 4.5 Installing the Solid Core Current Sensor Assembly 13
Section 4.6 Current Sensor Wiring 14
Section 4.7 MAINS Line Voltage & Current Sensor Wiring Diagrams 15
Section 4.8 Line Voltage/Current Sensor Diagnostic 16
Section 4.9 Final Main Board Checks 17
Section 5.0 Monitoring Multiple Loads with One Meter 18
Section 6.0 KWh Meter Features & Functions 20
Section 6.1 KWh Meter Display Functions 20
Section 6.2 How to Read the kWh Meter 21
Section 6.3 KWh Meter Hardware Functions 22
Section 7.0 Preventative/Scheduled Maintenance 24
Section 8.0 Troubleshooting Guide 25
Section 9.0 Frequently Asked Questions 26
Section 10.0 Meter Technical Specifications 28
Section 11.0 Meter Limited Warranty 30

CLASS 1000 METER
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1.0 Pre-Installation Information
The E-Mon D-Mon® Class 1000 kWh meter is a 2-element meter used to monitor
electric power usage of individual loads after the utility meter. Installation must only be
performed by qualified personnel and in accordance with these instructions and all
applicable local and national electrical codes. E-Mon or its representatives assume no
responsibility for damages or injury resulting from the improper installation of this
meter.
Meters are supplied in a UL Type 1 steel enclosure appropriate for indoor installation
where it will not be affected by the elements, such as moisture and extreme
temperatures.
Units designated by the “R” suffix on the model number have an extended
environmental operating range and are enclosed in a NEMA 4X enclosure to
accommodate outdoor environments.
Verify the input voltage rating and configuration on the meter label to ensure it is
suitable for the intended electrical services. Class 1000 meters labeled for 120/208V
service MUST NOT be installed on service feeds of 277 and vice versa.
Verify the current sensors are sized suitably for the load to be monitored. Compare the
color of the arrows on the current sensors to the chart below to confirm the correct
current sensor is being used.
Internal circuit card components are extremely sensitive to electrostatic discharge.
Prior to handling or touching internal circuitry, discharge any static buildup on your
person. To discharge yourself, touch a grounded metal object such as conduit or an
earth grounded+ metal enclosure.
WARNING
Use of this instrument, Class 1000, in a manner inconsistent with this manual
or not specified by the manufacturer in writing, can cause permanent damage
to the unit and/or serious injury to the operator. The protection and safety
features provided by this equipment may become impaired or otherwise
compromised.
NOTE: If any trouble arises during installation or functional verification operations, do
not immediately remove unit. Before removing the unit, contact E-Mon’s tech-
nical support department at [phone]. E-Mon’s technical department
will assist you in detailed troubleshooting of the Class 1000 installation.
Sensor Arrow Color Code Sensor Rating
Blue 25 Amp
Black 50 Amp
Brown 100 Amp
Red 200 Amp

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1.1. Internal Electronic Assemblies
Fig. 1. Main Power Supply Board & Display Board
The unit is comprised of a Main Power Board and Display and Keyboard. All
component cards are mounted inside a UL Type 1 (standard) or NEMA 4X (optional)
enclosure.
NOTE: Units are supplied in a UL Type 1 metal enclosure suitable for indoor applica-
tions only. Units supplied in the optional NEMA 4X fiberglass enclosure are
suitable for either indoor or outdoor applications, within the defined specifica-
tions. Refer to Section 12.0 for a definition of suitable environmental condi-
tions for indoor and outdoor units.
M33177
MAIN POWER
BOARD
DISPLAY AND
KEYBOARD

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1.2 Main Power Board
Connections to this board include the MAINS Input Voltage, Current Sensors, external
IDR interface and Isolated Pulse Output. The MAINS input terminals are covered with
a protective shield for safety purposes. The current sensor assemblies interface to
three header connectors labeled A, B, and C along with conductor color indication.
Each header connector input corresponds to an input voltage phase, so care must be
taken to ensure each current sensor is connected to the correct input header. TB4 is
not to be used as an input on the Class 1000 meter.
Fig. 2. Standard Configuration
1.3 Display Board
The display board connects to the main power board via a flex-ribbon cable and the
board is mounted on the inside of the enclosure door. The display board LCD readout
indicates the cumulative kWh and instantaneous kW value.
2.0 SAFETY LABEL DEFINITIONS AND
INFORMATION
The Green Class meter may contain one or more of the following labels. Operator(s)
should familiarize themselves with the meaning of each label to minimize risk.
The presence of this label is a cautionary indicator identifying a
danger risk. The manual should be consulted prior to proceeding.
The presence of this label indicates an electrical shock hazard exists
in the location or area where the label is placed. Prior to proceeding,
the MAINS power must be disconnected and the manual consulted for
safety information.
M33178
TB1 TB2 TB3 TB4

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3.0 PRECAUTIONARY AND SAFETY
INFORMATION
CAUTION
Internal circuit card components are extremely sensitive to electrostatic
discharge. Be careful not to touch internal circuitry prior to discharging any
static buildup on your person. To discharge yourself, touch a grounded metal
object such as conduit or an earth-grounded metal enclosure.
WARNING
High voltages present on main PCB terminal block screw terminals. Risk of
serious injury and/or electrical shock exists. Prior to performing any wiring
operations, review all contents of the user manual and de-energize the MAINS
power switch. Only qualified personnel should perform installation wiring.
Installation wiring must comply with all local and national electrical codes.
WARNING
Failure to ground the enclosure creates a possible shock hazard. Do not
operate the Class 1000 meter without a protective earth wire attached securely
to the PE terminal screw. After installing protective earth wiring, secure the
screw tightly (7 in-lbs torque.)
WARNING
NEVER open front panel of unit while unit has MAINS power applied. Failure to
comply can increase the risk of serious injury and/or electrical shock.

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4.0 METER INSTALLATION
4.1 Mounting the Meter
STEP 1: Using the appropriate sized mounting hardware, fasten the Class 1000 meter
enclosure to the selected mounting surface. The four mounting holes are centered
6.75” H x 4” W. The mounting hole spacing is identical for either the UL Type 1 or
NEMA 4X enclosure.
NOTE: Only the NEMA 4X enclosed unit is suitable for outdoor environmental condi-
tions. Units housed in UL Type 1 enclosures must only be installed in indoor
environments where it will not be affected by the elements, such as moisture
and extreme temperatures.
4.2 Main Power Board Connections
STEP 1: Install a temporary ground for ESD (Electrostatic Discharge) protection. With
all circuits de-energized, connect a temporary protective earth ground connection for
ESD protection. Prior to performing any unit wiring, be sure to discharge any static on
your person.
STEP 2: Install the Class 1000 Protective Earth Ground. Connect an earth ground wire
to the Class 1000 protective earth ground terminal screw located on the right side of
the line voltage terminal block. After installing the protective earth ground wire,
securely fasten the protective earth ground screw.

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WARNING
Failure to attach the protective earth ground wire securely to the enclosure
creates a potential shock hazard. Do not operate the Class 1000 meter without
a protective earth ground connection securely installed
STEP 3: Wire Entry: Two openings exist on the unit enclosure, one for 1/2” conduit and
one for 3/4” conduit. The 3/4” conduit opening located on the bottom of the enclosure
is used to bring in MAINS Power (voltage lines to power meter) and current sensor
wiring. The 1/2” conduit opening located on the top of the enclosure is used to
interface low voltage signals, such as the IDR interface and isolated pulse output.
(Outdoor enclosures equipped with one 3/4” conduit opening on bottom of enclosure
only.)
Route the appropriate cabling to and through the respective enclosure opening. The
conduit and fittings interfacing the enclosure entrances must be UL listed and properly
sized to the enclosure port diameter, The interfacing fitting must use a gasketed seal
ring to interface between the conduit fitting and the enclosure entry point. After
installing the conduit fitting and conduit, verify that the conduit fittings are aligned
properly to their respective enclosure entrance ports and tightened securely to prevent
moisture entry. VERIFY that each conduit slip nut is securely tightened to its respective
conduit fitting.
Outdoor applications require the use of the optional NEMA 4X enclosure. The same
principles outlined for indoor meter installations as defined in the above paragraph
carry over and apply to outdoor installations with one exception. This exception is that
the conduit and fittings for outdoor installations require an outdoor material rating and
UL approval for 4X applications
STEP 4: Unit MAINS Wiring (Voltage Wiring Connections): Remove the shield located
over phase A, B and C screw terminals on the main power board. This shield can be
removed by pulling back on the latch on the right side of the shield and lifting up on the
front. Wire each connection to the terminal block with stranded wire 14-12 AWG, rated
at 600 VAC.
Strip back all wire insulation to expose between 1/4”to 3/8” of the copper conductors.
Gently twist each wire to prevent fraying. Insert the conductors into their respective
terminal block position and tighten down the terminal block screw to 7 in-lb of torque.
The terminal block is clearly labeled PHASE A, PHASE B, PHASE C and NEUTRAL.
Phase C is not used on single phase circuits.
Connect the NEUTRAL wire to the appropriate terminal block position.
Connect the AC mains power wires (Phase A and Phase B) to their respective
positions as labeled on the terminal block. Also connect the neutral wire.

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After all conductors are connected to their respective terminal block positions and
tightened down, verify that each terminal block screw is securely fastened by gently
tugging on each conductor. Verify that no conductor wires are frayed or are shorting to
adjacent terminal block positions.
STEP 5: External Switch Mechanism/In-Line Fuse Installation.
To ensure a safe installation, the Class 1000 meter requires an external switch
mechanism, such as a circuit breaker, be installed on the Class 1000 MAINS input
wiring. The switch mechanism must be installed in close proximity to the meter and
easily reachable for the operator. This device must also be marked as the
disconnecting device for the Class 1000 meter.
Install 1/10 Amp Slow Activation in line fuses with the suitable voltage rating for each
conductor phase at the MAINS input to the meter. The fuses must be labeled to
indicate voltage and current rating as well as element characteristics. The fuse
element must be slow activating type.
STEP 6: Once the MAINS wiring is complete, replace the clear lexan protective shield
over terminal block TB1 and close the enclosure front panel. Secure the enclosure
cover using the locking mechanism. Activate the external circuit breaker or equivalent
switch to apply AC MAINS power to the unit.
The Class 1000 meter display should turn on and indicate total kWh accumulation
reading and KW load. The display will cycle between the two readings.
STEP 7: Using an AC Voltmeter, verify the input voltage readings are within the limits
specified below.
NOTE: Single Phase systems, the voltages are measured Phase to Neutral.
Step 8: Remove power from the unit by de-energizing the external switch.
Meter Input Voltage
Configuration Nominal Voltage Limits (+/- 10%)
120/208V, 2 Ph, 3 Wire 120 VAC 108 to 132 VAC
120/240V, 2 Ph, 3 Wire 120 VAC 108 to 132 VAC
277V, 1 Ph, 2 Wire 277 VAC 250 to 304 VAC

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4.3 Current Sensor Installation & Wiring
Once the AC voltages have been confirmed to be within acceptable limits, you are
ready to install the current sensors. The MAIN power board contains three header
connectors located at the bottom right of the board. The connectors are labeled A, B,
and C along with conductor color indication. This format must be followed in order for
the meter to function correctly. (Phase C is not used)
The Class 1000 meter will be used with one of two basic types of current sensors:
a. Split-Core Current Sensor: This sensor opens so that it can be attached
around the circuit conductor being monitored without interrupting power.
Unless otherwise specified, all Class 1000 meters are supplied with this sen-
sor type.
b. Solid-Core Current Sensor: This sensor does not open and requires the
monitored conductor be removed from the circuit to install the current sensor.
This type is only supplied when specified at time of order.
NOTE: The unit serial label specifies if the unit is set up for split or solid core current
sensors.
Both types of current sensors output a 0-2 VAC signal proportional to the current being
measured.

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4.4 Installing the Split-Core Current Sensor Assembly
STEP 1: Each phase being monitored will require one two-piece current sensor
assembly. Therefore, a three-phase meter will require three (3) assemblies. Open the
two-piece current sensor assembly by releasing the nylon clamp using a flat head
screwdriver.
Fig. 3. Split-Core Current Sensor
STEP 2: Reassemble the current sensor assembly around the conductor(s) to be
monitored. Ensure the current sensor halves marked “Load” are both facing the load
side of the conductor. The colored arrow will be on the source side of the conductor
being monitored and MUST be pointed in a clockwise direction around the conductor
being monitored. Tighten the nylon clamp to complete the assembly.
Fig. 4. Colored Arrow Will Be On The Source Side
IMPORTANT:
When looking from the source side of the conductor(s) being monitored, you
should see the arrow on the current sensor assembly. The arrow should be
pointing in a clockwise direction around the conductor(s) being monitored. If
the arrow is not positioned on the source side, inaccurate readings will result.
M33213
LOAD
SOURCE

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4.5 Installing the Solid-Core Current Sensor Assembly
The optional solid-core current sensors can be installed in the same applications as
the standard split-core units, however, the conductors that they are monitoring must
first be disconnected.
NOTE: Under no circumstances is this operation to take place without shutting off the
power to the conductor(s) being monitored.
With the power off, disconnect the conductor from its breaker or terminal. Slide the
solid-core current sensor over the conductor, making sure that the indicator on the
sensor is pointing in the direction of the load. After this is done, reconnect the
conductor and verify that it is properly installed.
Run the black and white wires from the solid-core current sensors and install them
according to the standard installation diagram. When this is completed, the power to
the monitored conductor can be turned back on.
Fig. 5. Solid Core Sensor Assembly

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4.6 Current Sensor Wiring
Once all the current sensors are installed on their appropriate phase conductors, you
can begin terminating the current sensors on to the Class 1000 main power board.
The current sensor leads can be extended up to 2,000 feet (using #14-22 AWG wire)
for remote monitoring applications. Consult your local electrical codes for proper wire
sizing (#22 AWG twisted pair wire with a black and white conductor, rated for 600 VAC
recommended.)
The current sensor connection points are located on the bottom right of the main
power board. Three removable plugs exist, one for each current sensor phase input.
The header portions of the connectors are labeled A, B, and C. Text on the plastic
cover of each of the connectors instruct you which terminal of the plug is for the white
conductor and which terminal is wired to the black conductor. Once each current
sensor is wired to its respective plug, insert each plug into the appropriate header.
Input C is not used with the Class 1000 meter.
4.7 MAINS Line Voltage & Current Sensor Wiring
Diagrams
Fig. 6. Single-Phase, 2-Wire Connection 120/240 Volt Single-Phase
∅A∅B∅C
∅A
W BN
LINE VOLTAGE CURRENT SENSOR
∅A
N
SINGLE-PHASE, 2-WIRE CONNECTION
120 or 277-VOLT SINGLE-PHASE
LOAD SOURCE
M33179
NOTES:
LINE VOLTAGE CONNECTION: #14 AWG
SENSOR CONNECTION: B = BLACK W = WHITE
SHORTING LINK MUST BE INSTALLED ON B- AND C-PHASE CURRENT SENSOR TERMINALS.
1/10-AMP INLINE FUSES RECOMMENDED.
1
1
PE

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Fig. 7. Single-Phase, 3-Wire Connection 120/240-Volt Single-Phase
∅A∅B∅C
∅A∅B
W B W BN
LINE VOLTAGE CURRENT SENSORS
∅A
N
SINGLE-PHASE, 3-WIRE CONNECTION
120/240-VOLT SINGLE-PHASE
∅B
LOAD SOURCE
M33180
NOTES:
LINE VOLTAGE CONNECTION: #14 AWG
SENSOR CONNECTION: B = BLACK W = WHITE
IMPORTANT: LINE VOLTAGE MUST BE PRESENT AT THE A- AND B-PHASE VOLTAGE TERMINALS.
SHORTING LINK MUST BE INSTALLED ON C-PHASE CURRENT SENSOR TERMINALS.
1/10-AMP INLINE FUSES RECOMMENDED.
1
11
PE

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4.8 Line Voltage/Current Sensor Diagnostics
Fig. 8. Main Board Configuration
If the meter is not correctly wired, the “ERROR” indicator will be on.
Verify that the AC MAINS voltage wires are all connected to the correct positions on
the terminal block. Inspect the MAINS input wiring to verify each conductor is
terminated at the correct terminal block position. Using an AC voltmeter, measure the
AC voltage for each Phase to Neutral terminal and to the Frame ground point.
Verify each current sensor by running at least 1% of the full scale rated current through
the conductor being monitored by each phase. (e.g. 2 amp load required for each
phase to perform sensor diagnostic procedures.)
M33181

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Verify that the current sensor white and black conductors are installed in the correct
header positions.
Verify that the current sensors are installed in the correct direction on the conductor
being monitored.
Verify that the current sensor plugs are terminated in the correct header on the Main
power board.
If the error LED still hasn’t been cleared, measure the AC voltage inputs across the
plug terminals of each current sensor, individually. Set the AC voltmeter to the 20 Volt
scale. If a reading of zero volts is indicated on the voltmeter, check for an open circuit.
An open connection could exist at the plug terminals or at a splicing junction. Also
verify a tight connection exists between the core halves.
If error message is still appearing, contact E-Mon technical support at [phone]
for further assistance.
4.9 Final Main Board Checks
Once the wiring error has been corrected, the Main Power Board error LED should
extinguish.

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5.0 MONITORING MULTIPLE LOADS WITH
ONE METER
The Class 1000 meter provides extreme flexibility by allowing additional sets of current
sensors to be used in parallel so that multiple load locations can be monitored by one
meter. This feature allows a totalized display readout from two or more load circuits.
You may use parallel sensors to monitor specific breakers from one panel, specific
breakers from more than one panel, two or more complete panels, etc.
When paralleling current sensors, the following rules must be followed for accurate
readings:
Rule 1: Current sensors must be installed in complete sets of two, with a maximum of
three sensors installed in parallel per phase.
Rule 2: All sensors used in parallel must be of the same amperage rating (i.e. 100
amp, 200 amp, etc.) The rating is determined by the current rating (amperage) of the
Class 1000 meter. For example, a 200 amp meter must use extra sets of 200 amp
current sensors.
Rule 3: All locations being monitored must have the same power source. A 277 volt
meter cannot monitor a 208 volt load nor can a meter monitor two 277 or 208 volt loads
if they are from different originating power sources or from different transformers.
Rule 4: The display readings must be multiplied by the number of sets of current
sensors installed. E.g. meter reading of 5 kWh with 2 sets of current sensors....5 x 2 =
10 kWh (actual usage.)
NOTE: One set of current sensors equates to three sensors, one per phase. The
multiplier only applies when extra sets of current sensors are installed on one
meter. Therefore, if you are using only one set of two sensors (one per
phase) the multiplier is not required.

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Fig. 9. Multiple Load Locations Can Be Monitored By One Meter.
ØAØBØC
ØAØBØC
W B W B W BN
LINE VOLTAGE
ØA
ØB
LOAD SOURCE
N
LOAD A
LOAD B
CURRENT SENSORS
LOAD SOURCE
ØA
ØB
N
M33204
PE

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6.0 KWH METER FEATURES & FUNCTIONS
6.1 KWh Meter Display Functions
Fig. 10. Normal Mode (kWh Reading)
The Class 1000 kWh meter display requires no multiplier and shows kilowatt hours
consumed. See section 6.2 for information on calculating cost based on kWh usage.
Fig. 11. KW Load Mode (Current Load in kW)
The Class 1000 LOAD display shows the present circuit load in kilowatts.
Fig. 12. Start Up Mode
When initially powered on, the Class 1000 meter will display the startup screen.
This screen indicates the meter voltage, amps, and service configuration. It will remain
on for approximately five seconds before switching to the normal operating mode.