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Mini Meter
WEB VERSION
TM
Installation Manual
Cat No. 6F101, 6F201, 6S101, 6S201, MK240, MO240
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DI-000-A3245-00A
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TABLE OF CONTENTS
WEB VERSION
1 Warnings and Cautions
2 Product Description
2.1 General Description
2.2 Meter Features
2.3 Meter Certifications
2.4 Physical Description
2.4.1 Single Meter
2.4.2 Enclosures
3 Technical Specifications
3.1 Electrical Specifications
3.2 Input/Output Connections
4 Installation Instructions
4.1 Preparation
4.2 List of Materials
4.3 Mounting the Enclosure
4.3.1 Mounting Location
4.3.2 Drilling Conduit Holes
4.3.3 Mounting Procedure and Conduit Installation
4.4 Installation of Voltage Lines
4.5 Installation of Current Transformers
4.5.1 General Requirements
4.5.2 Installing Solid Core CTS
4.6 Testing the Installation
5 Maintenance
6 Troubleshooting
7 Warranty
8 Contact Information
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1 WARNINGS AND CAUTIONS
WEB VERSION
The following section contains installation and wiring instructions for the Leviton Mini Meter™.
If technical assistance is required at any point during the installation, contact information can
be found at the end of this manual. Leviton is not responsible for damage to the meter caused
by incorrect wiring, which will void the product’s warranty.
WARNING:
• TO AVOID FIRE, SHOCK OR DEATH; TURN OFF POWER at circuit breaker or fuse
and test that the power is off before installing product or servicing current transformers.
• TO AVOID FIRE, SHOCK OR DEATH; Look inside the meter and electrical panel for
possible exposed wire, broken wire, damaged components or loose connections.
• Make sure all tools used during installation have proper installation ratings.
• Installations should be done in accordance with local codes and current National
Electric Code requirements, and performed by trained, qualified professionals.
• Equipment used in a manner not specified by this document impairs the protection
provided by the equipment.
CAUTIONS:
• Verify the model number and electrical specifications of the device being installed to
confirm they are appropriate for the intended electrical service
(see Section 3).
• Consult local codes for any possible permits or inspections required before beginning
electrical work.
• Ensure the conduit for the installation is flexible and non-metallic. For outdoor
applications conduit and conduit fittings must be rated UL Type 4X for outdoor
enclosures. Failure to use the appropriate conduit impairs the degree of equipment
protection.
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2 PRODUCT DESCRIPTION
WEB VERSION
2.1 General Description
The Leviton Mini Meter is a self-powered, current transformer (CT) rated electronic
kilowatthour (kWh) meter designed for permanent connection to an electrical service.
Mini Meter devices come in single element (2-wire) and dual element (3-wire)
configurations.
2.2 Meter Features
• Revenue-grade accuracy with solid-core or easy to install split core CTs
• Built in LCD display with optional external mechanical counter
• Encapsulated model for harsh environments
• Multiple load monitoring with a single meter
• AMR compatible isolated pulse outputs
• 5-year warranty
2.3 Meter Certifications
• UL Approved (100A & 200A models only) for use in the US or Canada
• Conforms to accuracy requirements set forth in ANSI C12.1 and C12.16
• Certified to California Division of Measurement Standards
• Approved by the California Energy Commission for use in the California Solar
• Approved by State of Maryland Public Service Commission in accordance with
2.4 Physical Description
2.4.1 Single Meter
Initiative’s Performance Based Incentive Program
applicable ANSI C12.1 requirements
4.620 in.
.125 in.
Figure 1 - Single Mini Meter Case Dimensions
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L1
CT1 CT2 (Kh) Isol
X1 X2
L2N
X1 X2 10 100 1000
3.525 in.
5.130 in.
5.130 in.
Isolated Output
5
Counter
12COM
+12VDC
2.845 in.2.150 in.
1.107 in.
1.282 in.
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2 PRODUCT DESCRIPTION
WEB VERSION
2.4 Physical Description
2.4.2 Enclosures
3.568 in
[91 mm]
5.904 in [150 mm]
8.465 in [215 mm]
7.795 in [198 mm]
5.716 in [145 mm]
4.716 in [120 mm] 5.904 in [150 mm]
Figure 2 - Small enclosure and mounting dimensions
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Optional mounting position, typical
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3 TECHNICAL SPECIFICATIONS
WEB VERSION
3.1 Electrical and Environmental Specifications
The Mini Meter device falls under UL Circuit Category III: devices for measurements
performed in the building installation. The electrical and environmental specifications
for Mini Meter devices are given in the table below.
Input Configurations 1 Phase, 2 wire
Supply Voltage Range
(L1 or L2 to Neutral)
Maximum Input Power 8 VA
Maximum Rated Current
Line Frequency 50-60 Hz
Power Factor Range 0.5 to 1.0, leading or lagging
Accuracy +/- 0.5% of registration @ 1.0pf. 2 to 200 A
Operating Temperature Range -30 to +70 degrees C
Rated Pollution Degree
Rated Relative Humidity 80%
Branch Fuse Holder
Klemsan ASK2 or equiv.
Terminal Blocks Mini Meter
Dinkle/International Connector
OSTVI110152
1
Product approved for use with included Leviton Current Transformers, as follows:
• 200A:
• 100A:
2
Pollution Degree 2: normally only non-conductive pollution occurs. Occasionally, however, a
Part Numbers CDA02-x12 (CDA02-K12, CDA02-R12, CDA02-L12, CDA02-212,
CDA02-312) for Solid Core, 0.72" Diameter CTs or CTD02-K16 for Split Core 1" CTs
Part Numbers CDA01-x12 (CDA01-K12, CDA01-R12, CDA01-L12, CDA01-212,
CDA01-312) for Solid Core, 0.72" Diameter CTs or CTD01-K16 for Split Core 1" CTs
temporary conductivity caused by condensation can happen.
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2
Table 1 - Electrical and Environmental Specifications
1 or 2 Phase, 3 wire
Min. 102 VAC Max. 138 VAC
220 A primary for 200 A models
110 A primary for 100 A models
0.11 A secondary for 0.1 A secondary models
0.22 A secondary for 0.2 A secondary models
+/- 0.75% of registration @ 0.5pf, 2 to 200 A
2
250 V, 1 A, fast acting, short time lag
4.4 in-lb of torque maximum
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3 TECHNICAL SPECIFICATIONS
WEB VERSION
3.2 Input/Output Connections and User Display
Figure 3 - Mini Meter Connections and Display
LCD
Display
L1
Sealing
Studs
Voltage Inputs (wire connections) Description
L1 Black wire, voltage input, Line 1,
120 V with respect to neutral
N White wire, Neutral input
L2 Red wire, voltage input, Line 2, 120 V with
respect to neutral (2 phase models only)
CT Inputs
CT1 : X1 Current Transformer input, CT1.
Colored wire of CT 1
CT1 : X2 Current Transformer input, CT1. White wire
of CT1
CT2 : X1 Current Transformer input, CT2.
CT2 : X2 Current Transformer input, CT2. White wire
of CT2 (2 phase models only)
CT1 CT2 (Kh) Isol
X1 X2
L2N
Table 2A - Input Connections
Isolated Output
X1 X2 10 100 1000
Colored wire of CT 2.
(2 phase models only)
Counter
12COM
+12VDC
Load
LED
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3 TECHNICAL SPECIFICATIONS
WEB VERSION
3.2 Input/Output Connections and User Display
Table 2B - I/O Connections
Outputs Description
10, Isolated Output (10 Wh/P, Kh = 10) Isolated pulse output: 5 watthours
on, 5 watthours off, referenced to
ISOL COM NOT TO BE USED FOR
FIELD WIRING
100, Isolated Output (100 Wh/P, Kh=100) Isolated pulse output: 50 watthours
on, 50 watthours off, referenced to
ISOL COM
1000, Isolated Output (1 kWh/P, Kh=1000) Isolated pulse output: 500 watthours
on, 500 watthours off, referenced to
ISOL COM
ISOL COM Isolated common for 10/100/1000
isolated outputs
Counter (kh = 100 or kh = 1000)* For 12 VDC electro-mechanical
counter
+12 VDC +12 VDC @ 10ma Max output
(MMS and MMD models only) (Not Isolated for pre-wiring only)
* Recommended Leviton Mechanical Counters part numbers are:
MPCTR-1KW (1kWh) and MPCTR-TKW (0.1kWh).
LED Indicators Description
Load LED (green) 50% duty cycle LED to verify proper
meter function when connected to a
load. At 200 watts, LED will flash 1.5
minutes on, 1.5 minutes off; with no
load, LED will remain on or off
LCD Display LCD display that shows total kWh
(also displays kw demand,
instantaneous kw, error codes if
applicable, and more information
upon boot. Refer to the Mini Meter
manual for complete information)
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Table 3 - Display Indicators
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.1 Preparation
WARNINGS
• TO AVOID FIRE, SHOCK OR DEATH; TURN OFF POWER at circuit breaker
• TO AVOID FIRE, SHOCK OR DEATH; Look inside the meter and electrical
• Specification for branch circuit protection, rated min. 250 V, 1A, for voltage
4.2 List of Materials
• Mini Meter MMU and associated mounting materials.
• Line 1, Line 2, and Neutral hook-up wires as needed for the electrical service.
• Current Transformers (CTs): This product is designed for use with Leviton CTs;
• Flexible, non-metallic conduit and fittings; UL Type 4X for outdoor applications
4.3 Mounting the Enclosure
4.3.1 Mounting Location
• Meter installations require a switch or circuit breaker as part of the building
• The switch or circuit breaker must be marked as the disconnecting device for
• It is recommended that the enclosure be mounted near the disconnecting
• The enclosure should not be positioned in a manner that makes it difficult to
• Ensure that the CT and voltage lead lengths (and conduit lengths) are capable
• If a suitable mounting location near the load center cannot be found, additional
or fuse and test that power is off before installing product or servicing current
transformers.
panel for possible exposed wire, broken wire, damaged components or loose
connections.
sense / input leads.
Wires must be 18 AWG or larger and insulated for 300 VAC min
(NOT INCLUDED).
see Section 3.2 for details (NOT INCLUDED IN ALL MODELS).
(NOT INCLUDED).
installation.
the MMU.
device in an area with adequate ventilation.
operate the disconnecting device.
of reaching the enclosure from the breaker panel.
in-line fuses or circuit breaker may be required in accordance with NEC
regulations.
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.3.2 Drilling Conduit Holes
The bottom panel and lower half of the side panels work best for conduit opening
locations in outdoor single meter enclosures. Select the location the makes wire
installation easiest for the given environment. If the side panels are used, holes
should be centered approximately half an inch from the bottom of the enclosure.
Hole sizes must be appropriate to fittings, and large enough to fit all voltage and
CT wiring (4-7 18 AWG min. wires insulated for 300 V min.). Care should be
exercised to keep drill bit away from components inside the enclosure. UL Type
4X conduit and fittings must be used in order to maintain the outdoor rating
of the enclosure.
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.3.3 Mounting Procedure and Conduit Installation
1. Attach the mounting brackets to the back of the enclosure with the four
2. Fasten the enclosure to the selected surface via mounting holes.
3. Verify that the enclosure is not loose and that all connections are secure.
4. Attach the conduit between enclosure and load center, routing wires as
5. Make sure the conduit fittings are aligned properly and tightened securely to
4.4 Installation of Voltage Lines
WARNING: TO AVOID FIRE, SHOCK OR DEATH; TURN OFF POWER at circuit
Voltage connections must be made in accordance with NEC Section 240 and all other
1. Field wired voltage connections are made to the Mini Meter terminal block. The
2. Verify that branch circuit fuse specifications meet local electric codes.
3. Connect 18 AWG min., 300 V min. insulated wiring for Line voltages and Neutral to
4. Route wires through the conduit if not already done.
5. Trim the wire to the appropriate length to avoid coils of excess wiring.
6. Strip wiring to approximately .300 inches if needed and connect to the appropriate
provided screws as shown in Figure 4.
necessary for later use.
prevent moisture from entering the enclosure (outdoor applications).
Figure 4 - Mounting the Enclosure
breaker or fuse and test that the power is off before wiring! Verify that branch circuit
fuse specifications meet local electric codes (see section 3.2).
local electrical code requirements
rated torque for these terminal blocks is 4.4 in-lb, and can be used with solid and
stranded copper wires, at 12-18 AWG.
the appropriate locations in the breaker panel, in accordance with all national and
local electrical codes; see Figure 7 for wiring diagram.
terminals. Wires should be tightened so that they are held snuggly in place, but do
not to over-tighten, as this may compress and weaken the conductor.
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.5 Installation of Current Transformers
WARNING: TO AVOID FIRE, SHOCK OR DEATH; TURN OFF POWER at circuit
CAUTION: In accordance with NEC, CTs may not be installed in any panel board
where they exceed 75% of the wiring space of any cross-sectional area. Violation
4.5.1 General Requirements
• Leviton-provided CT leads are approximately 48 inches. Wire insulation should
• CTs should be securely fastened such that they will not slide down to live
• Wires should be tightened so that they are held snuggly in place, but do not to
• Current and voltage inputs must be installed ‘in phase’ for accurate readings
• Field wired CT connections are made to the Mini Meter terminal block. The
• Splices on the CT leads must be within the meter enclosure, not inside the
breaker or fuse and test that the power is off before installing or servicing current
transformers.
of the electric code could be punish by a fine or imprisonment.
be stripped so that the bare conductor length that connects to the meter terminal
block does not exceed 0.300 inches.
terminals.
overtighten, as this may compress and weaken the conductor.
(e.g. CT1 on Line 1, CT2 on Line 2)
rated torque for these terminal blocks is 4.4 in-lb, and can be used with solid
and stranded copper wires, at 12-18 AWG.
conduit.
4.5.2 Installing solid core CTs
WARNING: TO AVOID FIRE, SHOCK OR DEATH; TURN OFF POWER at circuit
1. Route CT wires through the conduit if not already done.
2. Trim the wire to the appropriate length to avoid coils of excess wiring.
3. Strip wiring to approximately .300 inches and connect to the appropriate
4. With power turned off, disconnect each monitored conductor and slide on a
5. Reconnect the conductors.
NOTE: Failure to install CTs in the correct orientation and on the correct phase
breaker or fuse and test that the power is off before installing or servicing current
transformers.
terminals as described above.
CT, ensuring the CT is correctly oriented as noted above.
will lead to inaccurate meter readings.
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Figure 5 - Leviton Solid Core CTs
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.5 Variations and Installation of Current Transformers
• Leviton split core CTs (Figure 6): The side with the white dot, H1, must face the
incoming LINE. White wire connects to X2 terminal, black wire connects to X1
terminal.
Figure 6 - Leviton Split Core CTs
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
SINGLE ELEMENT,
MINI METER WIRING DIAGRAM
LINE
LINE 1
CT1
H1
NEUTRAL
120 V
X2
X1
LOAD
DUAL ELEMENT,
MINI METER WIRING DIAGRAM
LINE
LINE 1
120 V
NEUTRAL
120 V
LINE 2
Secure clear cover
with two screws after wiring
(2 places)
+12VDC
Isolated Output
CT1 CT2 (Kh) Isol
L1
X1 X2
L2N
Secure clear cover
with two screws after wiring
(2 places)
CT1 CT2 (Kh) Isol
L1
X1 X2
L2N
Counter
X1 X2 10 100 1000
12COM
Optional 12VDC Counter
(Kubler Type K46 or Equivalent)
+12VDC
Isolated Output
Counter
X1 X2 10 100 1000
12COM
888888
240 V
or
208 V
CT1
H1
X2
X1
H1
LOAD
Figure 7 - Dual and single element Mini Meter hookup diagram
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CT2
888888
Optional 12VDC Counter
(Kubler Type K46 or Equivalent)
X2
X1
Manufacturer is not responsible for
damage to the meter caused by
incorrect wiring
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4 INSTALLATION INSTRUCTIONS
WEB VERSION
4.6 Testing the Installation
Testing Voltage
The LCD illuminates when the Mini Meter has a proper power supply. Voltage should
also be tested using an AC voltmeter to verify that the voltage across voltage line
terminals (L1 to Neutral and L2 to Neutral) is not in excess of the maximum rated
voltage.
Load LED
The load LED is described in section 3. This LED should be cycling at 50% duty cycle
when the meter is connected properly and a sufficient load is applied.
5 MAINTENANCE
Properly installed meters with sound connections and secure conduit fittings should not
require user maintenance. If the meter is functioning abnormally, consult the Troubleshooting
guide. If the answer cannot be found there, contact Technical Support.
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6 TROUBLESHOOTING
WEB VERSION
Problem Solution
1. LCD not illuminated • Check to make sure all connections are
2. Load LED not flashing • Verify CT connections and orientations
3. Registered consumption low • Check to make sure the reverse phase
wired properly
• Test the voltage being supplied to the
meter using an AC voltmeter
• With power off, remove any additional line
fuses and test with ohmmeter
• Make sure there is sufficient load to draw a
significant current
• Test the voltage being supplied to the
meter using an AC voltmeter
arrow is not shown on the LCD
• Make sure that current and voltage
connections are in phase.
• Check power connections and fuses
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7 WARRANTY
WEB VERSION
Leviton warrants to the original consumer purchaser and not for the benefit of anyone else that this product at the time of its sale by Leviton is free
of defects in materials and workmanship under normal and proper use for five years from the purchase date. Leviton’s only obligation is to correct such
defects by repair or replacement, at its option. This warranty excludes and there is disclaimed liability for labor for removal of this product or reinstallation.
This warranty is void if this product is installed improperly or in an improper environment, overloaded, misused, opened, abused, or altered in any
manner, or is not used under normal operating conditions or not in accordance with any labels or instructions. There are no other or implied warranties
of any kind, including merchantability and fitness for a particular purpose, but if any implied warranty is required by the applicable jurisdiction, the
duration of any such implied warranty, including merchantability and fitness for a particular purpose, is limited to five years. Leviton is not liable for
incidental, indirect, special, or consequential damages, including without limitation, damage to, or loss of use of, any equipment, lost sales or
profits or delay or failure to perform this warranty obligation. The remedies provided herein are the exclusive remedies under this warranty, whether
based on contract, tort or otherwise.
LIMITED 5 YEAR WARRANTY AND EXCLUSIONS
© 2018 Leviton Mfg. Co., Inc.
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