Magnum Energy ME Series User Manual

ME Series
Modifi ed Sine Wave
Inverter/Chargers

Owner’s Manual

Disclaimer of Liability

The use of this manual and the conditions or methods of installation, operation, use, and
maintenance of the ME Series inverter/charger is beyond the control of Magnum Energy, Inc.
Therefore, this company assumes no responsibility and expressly disclaims any liability for loss,
damage, or expense whether direct, indirect, consequential, or incidental that may arise out of or
be in anyway connected with such installation, operation, use, or maintenance.

Due to continuous improvements and product updates, the images shown in this manual may not
exactly match the unit purchased.

Restrictions on Use

The ME Series inverter/charger may only be used in life-support devices or systems with the
express written approval of Magnum Energy. Failure of this inverter can reasonably be expected
to cause the failure of that life-support device or system, or to affect the safety or effectiveness
of that device or system. If the ME Series inverter fails, it is reasonable to assume that the health
of the user or other persons may be endangered.

Copyright Notice

Copyright © 2012 by Magnum Energy, Inc. All rights reserved. Permission to copy, distribute, and/or
modify this document is prohibited without express written permission from Magnum Energy, Inc.

Document Information

Description – ME Series Owner’s Manual
Part Number and Revision – 64-0002 Rev B
Date Published – August 2012

This entire manual is available for download—with many of the diagrams available in color—under
the Document Library tab at: www.magnumenergy.com

Contact Information

Magnum Energy, Inc.
2211 West Casino Rd.
Everett, WA 98204
Phone: [phone]
Fax: [phone]
Web: www.magnumenergy.com

Statement of Appreciation

Thank you from all of us at Magnum Energy for purchasing this ME Series inverter/charger.
We understand that you have many purchasing options in the marketplace, and are pleased that

you have decided on a Magnum Energy product. This ME Series inverter/charger was proudly
assembled and tested in the United States in our Everett, Washington, facility.

At Magnum, we are committed to providing you with quality products and services, and hope that
your experience with us is pleasant and professional.

Record unit’s model & serial number in case you need to provide this information in the future.

Model: Serial Number:

ME2000 (-15B/-20B) N1

ME2012 (-15B/-20B) B1

ME2512 C1

Page i

ME3112 D1

Magnum Energy® is a registered trademark of Magnum Energy, Inc.

© 2012 Magnum Energy, Inc.

Safety Information

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

THIS MANUAL CONTAINS IMPORTANT INSTRUCTIONS FOR THE ME SERIES INVERTER/CHARGER
THAT SHALL BE FOLLOWED DURING THE INSTALLATION AND OPERATION OF THIS PRODUCT.
Before using the ME Series, read all instructions and cautionary markings. Also, be sure to review
the individual manuals provided for each component of the system. The installation instructions
are for use by qualified personnel only. Do not perform any installation or servicing other than
that specified in this owner’s manual unless you are qualified to do so. Incorrect installation or
servicing may result in a risk of electric shock, fire, or other safety hazard.

Safety Symbols

The following safety symbols have been placed throughout this manual to indicate dangerous and
important safety instructions.

WARNING: This symbol indicates that failure to take a specifi ed action could result in
physical harm to the user.

CAUTION: This symbol indicates that failure to take a specifi ed action could result in
damage to the equipment.

Info: This symbol indicates information that emphasizes or supplements important
points of the main text.

Safety Precautions

• All electrical work must be performed in accordance with local and national electrical codes.

• This product is designed for indoor/compartment installation. It must not be exposed to rain,
snow, moisture, or liquids of any type.

• Use insulated tools to reduce the chance of electrical shock or accidental short circuits.

• There are no user-serviceable parts contained in this product.

• This unit is provided with integral protection against overloads.

• Live power may be present at more than one point since an inverter utilizes both DC (batteries,
PV, etc.,) and AC (utility or generator) power. To reduce risk of electric shock, ensure all DC
and AC wiring is disconnected prior to installing or performing maintenance on the inverter.
Turning off the inverter will not reduce this risk, the inverter must be totally disconnected from
all sources.

• Use Class 1 wiring methods for field wiring connections to terminals of a Class 2 circuit.

• Listed or labeled equipment shall be installed and used in accordance with any instructions
included in the listing or labeling.

• Always verify proper wiring prior to starting the inverter.

• Use only copper wires with a minimum temperature rating of 75°C.

• AC wiring must be no less than 10 AWG (5.3 mm²) gauge copper wire.

• Battery cables should be no less than #4/0 AWG (107.2 mm²) for 12-volt systems. Crimped
and sealed copper ring terminal lugs with a 5/16 hole should be used to connect to the DC
terminals on the inverter.

• Torque all AC wiring connections and DC cable connections to the required torque values.

• The inverter must be properly installed, see Section 2.2 “Mounting the Inverter” in this manual.

• Overcurrent protection for the battery supply is not provided as an integral part of this
inverter. Overcurrent protection of the battery cables must be provided as part of the system
installation. Refer to Section 2.4 DC Wiring for more information.

© 2012 Magnum Energy, Inc.

Page ii

Safety Information

• Overcurrent protection for the AC output wiring is not provided as an integral part of this
inverter. Overcurrent protection of the AC output wiring must be provided as part of the
system installation. Refer to Section 2.5 AC Wiring for more information.

• The AC output neutral conductor and the DC negative conductors are not connected (bonded)
to the inverter chassis. Both the input and output conductors are isolated from the enclosure
and each other. System grounding, if required, is the responsibility of the system installer and
must comply with local and national electrical codes and standards. Refer to the Section 2.6
Grounding Inverters for more information.

Battery Safety

• Use insulated tools and be very careful when working around batteries, they can produce
extremely high currents if short-circuited (e.g., dropping a metal tool across the battery
terminal), which could cause a fire or explosion.

• Read and follow the battery manufacturer’s safety precautions before installing the inverter
and batteries. Always verify proper polarity and voltage before connecting the batteries
to the inverter. Once the batteries are connected to the inverter, ensure the maintenance
and charging requirements (i.e., charge voltage and charge rate) provided by the battery
manufacturer are followed to extend the life of the batteries and to prevent damage to the
batteries while charging.

• Wear eye protection such as safety glasses, and avoid touching your eyes and face when
working with batteries to keep any fl uid/corrosion on the battery from coming in contact
with eyes and skin. Have plenty of fresh water and soap nearby and thoroughly wash in case
battery acid contacts skin, clothing, or eyes. In the event of exposure to the eyes, flood them
for at least 15 minutes with running water and seek immediate medical attention. Baking soda
neutralizes lead acid battery electrolyte and vinegar neutralizes spilled NiCad and NiFe battery
electrolyte; depending on your battery type, keep a supply on hand near the batteries.

• Remove all jewelry such as rings, watches, bracelets, etc., when installing or performing
maintenance on the batteries and inverter. A battery can produce a short-circuit current high
enough to weld metal jewelry, causing severe burns.

• Never work alone. Always have someone within the range of your voice or close enough to
come to your aid when working around batteries.

• Use proper lifting techniques when working with batteries.

• Never use old or untested batteries. Check each battery’s label for age, type, and date code
to ensure all batteries are identical.

• Batteries are sensitive to changes in temperature. Install batteries in a stable environment.

• Batteries can produce explosive gasses, so install batteries in a well-ventilated area. For
compartment or enclosure installations, always vent batteries from the highest point to the
outside. Design the battery enclosure to prevent accumulation and concentration of hydrogen
gas in “pockets” at the top of the compartment.

• Provide at least one inch of air space between batteries to provide optimum cooling.

• Never smoke or allow a spark near batteries.

• To prevent a spark at the battery and reduce the chance of explosion, always connect the
cables to the batteries first. Then connect the cables to the inverter.

• Never charge a frozen battery.

• The battery bank should be installed in a clean, dry, ventilated environment where they are
protected from high and low temperatures. If installed in a vehicle/boat, the batteries must be
mounted upright (if using liquid batteries) and securely fastened. The location must be fully
accessible and protected from exposure to heat producing devices, and away from any fuel
tanks.

Page iii

© 2012 Magnum Energy, Inc

Safety Information

CONSIGNES DE SÉCURITÉ IMPORTANTES

CONSERVER CES INSTRUCTIONS

CE MANUEL CONTIENT DE IMPORTANTES POUR LA SÉRIE ME ONDULEUR/CHARGEUR QUI DOIVENT
ETRE SUIVIES PENDANT L’INSTALLATION ET FONCTIONNEMENT DE CE PRODUIT. Avant d’utiliser la
série ME, lire toutes les instructions etles mises en garde. Aussi, n’oubliez pas depasser en revue les
différents manuels fournispour chaque composant du système. Lesinstructions d’installation sont pour
une utilisationpar du personnel qualifi é. Ne pas effectuer une installation ou d’entretien autres que
ceux spécifi és dans ce manuel, sauf si vous êtes qualifi é pour le faire. Une mauvaise installation ou
d’entretien peut entraîner un risque de choc électrique, un incendie ou autre danger pour la sécurité.

Symboles de sécurité

Les symboles de sécurité suivants ont été placéstout au long de ce manuel pour indiquer des
conditions dangereuses et les consignes de sécurité importantes.

AVERTISSEMENT: Ce symbole indique que le défaut de prendre une action spécifi ée
pourraitcauser des dommages physiques à l’utilisateur.

ATTENTION: Ce symbole indique que le défaut de prendre une action spécifi ée peut
entraîner des dommages à l’équipement.

Info: Ce symbole indique une information qui met l’accent ou des suppléments points
importants du texte principal.

Consignes de sécurité

• Tous les travaux électriques doivent être effectués en conformité avec les codes locaux et

• Ce produit est conçu pour l’installation / du compartiment intérieur. Il ne doit pas être exposé
à la pluie, la neige, l’humidité ou des liquides de tout type.

• Utiliser des outils isolés pour réduire le risque de choc électrique ou courts-circuits accidentels.

• Il n’ya pas de pièces réparables par l’utilisateur de ce produit.

• Cet appareil est fourni avec une protection intégrale contre les surcharges.

• Puissance en direct peuvent être présents à plus d’un point depuis un onduleur utilise à la fois
DC (piles, PV, etc) et AC (utilitaire ou générateur) d’alimentation. Pour réduire le risque de
choc électrique, assurez-vous que tout le câblage DC et AC est débranchée avant l’installation
ou la maintenance sur le variateur. Mise hors tension de l’onduleur ne réduira pas ce risque,
l’onduleur doit être totalement déconnectée de toutes les sources.

• Utiliser des méthodes de câblage classe 1 pour les connexions de câblage sur le terrain aux
bornes d’un circuit de Classe 2.

• En vente ou de l’équipement étiqueté doit être installé et utilisé conformément aux instructions
fi gurant dans la liste ou l’étiquetage.

• Toujours vérifi er le câblage avant de commencer l’onduleur.

• Utilisez des fi ls de cuivre seulement avec une cote de température minimale de 75°C.

• AC câblage ne doit pas être inférieure à 10 AWG (5.3 mm²) de cuivre de calibre câblage.

• Les câbles de batterie ne doit pas être inférieur à #4/0 AWG (107.2 mm²) pour 12-volt
systèmes. Frisées et scellé cosses en cuivre anneau des bornes avec un trou de 5/16 doit être
utilisé pour se connecter à des bornes de courant continu sur l’onduleur.

• Couple de serrage de tous les AC connexions de câblage et DC connexions de câble pour les
valeurs de couple requises.

• L’onduleur doit être correctement monté, voir le montage de la section onduleur dans le
chapitre Installation de ce manuel.

• Protection contre les surintensités pour l’alimentation de la batterie n’est pas fourni en tant
que partie intégrante de cet inverseur. La protection contre les surintensités des câbles de
batterie doivent être fournis dans le cadre de l’installation du système. Se reporter à la
Section 2.4 DC Câblage pour plus d’informations.

© 2012 Magnum Energy, Inc.

Page iv

Safety Information

• La protection contre les surintensités pour le câblage de sortie CA n’est pas fourni en tant que
partie intégrante de cet inverseur. Protection contre les surintensités du câblage de sortie CA
doit être fournie dans le cadre de l’installation du système. Reportez-vous à la section 2.5
“Câblage ca” pour plus d’informations.

• Le conducteur de courant alternatif de sortie neutre et les conducteurs à courant continu
négatives ne sont pas connectés (servitude) au châssis inverseur. La fois l’entrée et des
conducteurs de sortie sont isolés de l’enceinte et l’autre. La terre du système, si nécessaire,
est de la responsabilité de l’installateur du système et doit se conformer à des codes locaux
et nationaux et les normes électriques. Reportez-vous aux Section 2.6 Les onduleur à la terre
pour plus d’informations.

Sécurité de la batterie

• Utiliser des outils isolés et être très prudent lorsque vous travaillez près des batteries, elles peuvent
produire des courants extrêmement élevés si en court-circuit (par exemple, échapper un outil
métallique à travers la borne de la batterie), ce qui pourrait provoquer un incendie ou une explosion.

• Lisez et suivez les consignes de sécurité du fabricant de la batterie avant d’installer l’onduleur et
des batteries. Toujours vérifi er la polarité et la tension avant de brancher les batteries à l’onduleur.
Une fois que les batteries sont connectées à l’onduleur, assurer la maintenance et les exigences de
charge (c.-à-tension de charge et taux de charge) fournis par le fabricant de la batterie sont suivies
pour prolonger la vie des batteries et pour éviter d’endommager les batteries pendant la charge.

• Porter des lunettes de protection tels que des lunettes de sécurité, et évitez de toucher vos yeux
et le visage lorsque l’on travaille avec des piles de garder tout fl uide / corrosion sur la batterie
d’entrer en contact avec les yeux et la peau. Ayez suffi samment d’eau fraîche et de savon à
proximité et se laver dans le cas d’acide contact avec la peau de la batterie, les vêtements ou les
yeux. Dans le cas d’exposition pour les yeux, les inonder pendant au moins 15 minutes à l’eau
courante et consulter immédiatement un médecin. Le bicarbonate de soude neutralise l’acide
de plomb électrolyte de la batterie et le vinaigre neutralise renversé NiCad et NiFe batterie à
électrolyte; en fonction de votre type de batterie, gardez sous la main près des batteries.

• Enlevez tous les bijoux tels que bagues, montres, bracelets, etc, lors de l’installation ou la
maintenance sur les batteries et l’onduleur. Une batterie peut produire un court-circuit assez
de courant élevé pour souder les bijoux en métal, provoquant de graves brûlures.

• Ne jamais travailler seul. Toujours avoir quelqu’un au sein de la gamme de votre voix ou
suffi samment près pour vous venir en aide lorsque vous travaillez près des batteries.

• Utiliser des techniques de levage appropriées lorsque vous travaillez avec des piles.

• Ne jamais utiliser de piles usagées ou non testés. Vérifi ez l’étiquette de chaque batterie à
l’âge, le type et le code de date afi n d’assurer toutes les batteries sont identiques.

• Piles sensibles aux changements temporaires, installer dans un environnement stable.

• Les batteries peuvent produire des gaz explosifs, etc installer les piles dans un endroit bien
ventilé. Pour les installations compartiment ou une enceinte, toujours évacuer les piles du
plus haut point à l’extérieur. Concevoir le boîtier de piles pour éviter l’accumulation et la
concentration de gaz d’hydrogène dans “poches” en haut du compartiment.

• Fournir au moins un pouce de l’espace aérien entre les batteries pour fournir un refroidissement optimal.

• Ne jamais fumer ou laisser une étincelle près des batteries.

• Pour éviter une étincelle à la batterie et de réduire le risque d’explosion, toujours connecter
les câbles aux batteries en premier. Ensuite, connectez les câbles à l’onduleur.

• Ne jamais charger une batterie gelée.

• La banque de la batterie doit être installé dans un endroit propre, sec, aéré et où ils sont
protégés contre les températures élevées et basses. S’il est installé dans un véhicule / bateau,
les batteries doivent être monté en position verticale (si vous utilisez des piles liquides) et
solidement fi xés. L’emplacement doit être pleinement accessible et protégé contre l’exposition
à la chaleur la fabrication de dispositifs, et loin de toute réservoirs de carburant.

Page v

© 2012 Magnum Energy, Inc

Table of Contents

1.0 Introduction ..................................................................................1

1.1 Features and Benefi ts ................................................................................. 2

1.2 How an Inverter/Charger Works ................................................................... 5

1.3 What Appliances will run from a Modifi ed Sine Wave Inverter ........................... 6

1.4 Appliances and Run Time ............................................................................ 7

2.0 Installation ...................................................................................8

2.1 Pre-Installation .......................................................................................... 8

2.2 Mounting the Inverter ...............................................................................11

2.3 Wiring the Inverter - General Requirements .................................................13

2.4 DC Wiring ................................................................................................14

2.5 AC Wiring ................................................................................................21

2.6 Grounding Inverters ..................................................................................34

2.7 Inverter Notifi cation Requirements ..............................................................37

2.8 Final Inspection ........................................................................................38

2.9 Functional Test .........................................................................................38

3.0 Operation ....................................................................................40

3.1 Inverter Mode ..........................................................................................40

3.2 Standby Mode ..........................................................................................41

3.3 Battery Charging ......................................................................................41

3.4 Transfer Time ...........................................................................................43

3.5 Battery Temperature Sensor Operation ........................................................43

3.6 Protection Circuitry Operation .....................................................................44

3.7 Inverter Startup .......................................................................................45

3.8 Factory Default Values ...............................................................................46

3.9 Inverter Fan Operation ..............................................................................47

3.10 Using a Remote with the ME Series Inverter .................................................47

4.0 Maintenance and Troubleshooting ...............................................48

4.1 Recommended Inverter and Battery Care .....................................................48

4.2 Storage for Mobile Installations...................................................................48

4.3 Troubleshooting ........................................................................................49

4.4 Performing an Inverter Reset ......................................................................50

4.5 Performing a Power Reset ..........................................................................50

Appendix A - Specifi cations and Optional Equipment ...........................51

A-1 Inverter/Charger Specifi cations ..................................................................51

A-2 Optional Equipment and Accessories............................................................52

Appendix B - Battery Information .......................................................53

B-1 Battery Location .......................................................................................53

B-2 Battery Types ...........................................................................................53

B-3 Battery Temperature .................................................................................53

B-4 Battery Bank Sizing ..................................................................................53

B-5 Battery Bank Sizing Worksheet ...................................................................54

B-6 Battery Wiring Confi gurations .....................................................................55

Appendix C – Inverter/Charger Terminology .......................................57

Limited Warranty ................................................................................59

How to Receive Repair Service ............................................................59

© 2012 Magnum Energy, Inc.

Page vi

List of Figures

Figure 1-1, Power Switch, Status LED, and Accessory Connection Ports ................................................2

Figure 1-2, Electrical Connection Points ...........................................................................................3

Figure 1-3, Left Side Features (ME2012, ME2512, ME3112) ................................................................4

Figure 1-4, Left Side Features (ME2000 Series) ................................................................................5

Figure 1-5, AC Waveforms .............................................................................................................6

Figure 2-1, Simplifi ed Installation Diagram for Permanent Installations ................................................9

Figure 2-2, Approved Mounting Positions ....................................................................................... 11

Figure 2-3, ME Series Dimensions and Side Reference ..................................................................... 12

Figure 2-4, DC and Battery Temperature Sensor Wiring ................................................................... 15

Figure 2-5, Battery Hardware Installation ......................................................................................17

Figure 2-6, Inverter DC Hardware Installation ................................................................................ 17

Figure 2-7, Battery Temperature Sensor ........................................................................................ 19

Figure 2-8, AC Terminal Block ...................................................................................................... 22

Figure 2-9, AC Wiring for Single In - Single Out (30 A) Confi gurations ............................................... 25

Figure 2-10, AC Wiring for Single In - Single Out (60 A) Confi gurations ............................................. 26

Figure 2-11, AC Wiring for Single In - Dual Out Confi gurations ......................................................... 27

Figure 2-12, AC Wiring for Dual In - Single Out Confi gurations ......................................................... 28

Figure 2-13, AC Wiring for Dual In - Dual Out Confi gurations ............................................................ 29

Figure 2-14, AC Wiring for ME2000 Models ..................................................................................... 32

Figure

2-15, AC Wiring for ME2000-15B/-20B Models ...................................................................... 33

Figure 2-16, Neutral-to-Ground Connection (Inverter Mode) ............................................................. 36

Figure 2-17, Neutral-to-Ground Connection (Standby Mode) ............................................................. 36

Figure 2-18, Large Ground Wire Connected to ME Series .................................................................. 37

Figure 2-19, Warning Label .......................................................................................................... 37

Figure 2-20, AC Voltage Checks .................................................................................................... 39

Figure 2-21, AC Voltage Checks (ME2000 model) ............................................................................ 39

Figure 2-22, AC Voltage Checks (ME2000-15B/-20B models) ............................................................ 39

Figure 3-1, Power Flow - Inverter Mode .........................................................................................40

Figure 3-2, Power Flow - Standby Mode ......................................................................................... 41

Figure 3-3, Automatic 4-Stage Charging Graph ............................................................................... 42

Figure 3-4, BTS Temperature to Charge Voltage Change .................................................................. 43

Figure 3-5, Power Switch and Status Indicator ................................................................................ 45

Figure 4-1, Performing an Inverter Reset .......................................................................................50

Figure B-1, Series Battery Wiring .................................................................................................. 55

Figure B-2, Parallel Battery Wiring ................................................................................................ 55

Figure B-3, Series-Parallel Battery Wiring....................................................................................... 55

Figure B-4, Battery Bank Wiring Examples (12-volt) ........................................................................ 56

List of Tables

Table 1-1, Typical Appliance Power Consumption ...............................................................................7

Table 2-1, Recommended DC Wire/Overcurrent Device for Rated Use ................................................ 16

Table 2-2, DC Wire Size For Increased Distance .............................................................................. 17

Table 2-3, AC Input/Output Wiring Confi gurations (ME2012, ME2512, and ME3112 models) .................. 24

Table 2-4, AC Input/Output Wiring Confi gurations (ME2000 models) .................................................. 31

Table 2-5, Equipment Grounding Conductor Sizing .......................................................................... 34

Table 3-1, Inverter Battery Turn On/Off Levels ................................................................................ 44

Table 3-2, Inverter/Charger Default Values .................................................................................... 46

Table 3-3, Inverter Compatibility Level .......................................................................................... 47

Table 4-1, Basic Troubleshooting ................................................................................................... 49

Page vii

© 2012 Magnum Energy, Inc.

Introduction

1.0 Introduction

Congratulations on your purchase of the ME Series inverter/charger from Magnum Energy. The ME
Series is a modifi ed sine wave inverter designed especially for mobile applications. Powerful, yet
simple to operate, this inverter/charger will provide you with the years of trouble-free performance
you have come to expect from Magnum Energy, all backed by our limited 3-year warranty.

Installation is easy. Simply connect the inverter’s output to your distribution circuits or electrical
panel, connect your AC to the inverter’s easy-to-reach terminal block, connect the batteries, and
then switch it on for power.

Info: This is a sizable manual and much of it is fairly technical. Terms may be used
throughout the manual that are unfamiliar to you. Refer to the Inverter/Charger
Terminology glossary in Appendix C for clarifi cation.

The ME Series inverter/chargers provide the following:

• 2000, 2500, or 3100-watt models in a small footprint – less area needed for installation

• Modifi ed Sine Wave output

• Automatic Power Factor Corrected (PFC) multi-stage battery charging

• RS485 standard communication protocol

• Remote and Network ports (easy connection for optional accessories)

• Inverter-mounted ON/OFF switch with LED indicator

• 30 amps per leg AC pass-thru capability

• DC terminal covers with 360 degree connection

• Field-serviceable for qualifi ed personnel – tested repair kits available

• Automatic battery temperature compensation (using battery temperature sensor) – for
optimum charging even during extreme temperature changes

• Overcurrent, over-temperature, and high/low battery voltage protection

The following accessories are also available for use with the ME Series inverter/charger:

• ME-AGS-N (Automatic Generator Start Module - Network version) – automatically starts/

stops your generator.

• ME-ARC50 (Advanced Remote Control) – easy to read LCD display panel that enables advance

inverter and accessories set up, control, and troubleshooting.

• ME-BMK (Battery Monitor Kit - with Shunt) – provides precise DC voltage/current measurements

and provides information on your battery’s State of Charge (SOC) condition.

• ME-RC50 (Standard Remote Control) – easy to read LCD display panel that enables standard

inverter and accessories set up, control, and troubleshooting.

Regulatory Compliance

The ME Series inverter/charger is designated as a Standalone power inverter with an internal
battery charger. It can be connected to shorepower/utility grid (or to a generator) to allow the
inverter batteries to be charged, and to power inverter loads while connected. The ME series is
not a grid-interactive (also known as utility-interactive) inverter and does not have the capability
to export (or sell) power back into the utility grid.

The ME Series has been tested and listed to UL 458, 5th Edition (Power Converters/Inverters
and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts) for use in the US;
and is also certifi ed to CSA C22.2 No. 107.1-01 (General Use Power Supplies) for use in Canada.
It has been tested and certified to these product safety standards by Intertek Testing Services
(known as ETL), which is a Nationally Recognized Testing Laboratory (NRTL). NRTL’s are qualified
organizations that meet Occupational Safety and Health Administration (OSHA) regulations to
perform independent safety testing and product certifi cation.

© 2012 Magnum Energy, Inc.

Page 1

Introduction

1.1 Features and Benefi ts

The ME Series inverter/charger is designed to allow easy access to wiring, circuit breakers, and
controls. Its die cast baseplate with one-piece aluminum cover ensures maximum durability with
minimum weight, as well as cooler, more effi cient operation.

The front of the ME Series is equipped with the following features (see Figures 1-1 and 1-2):

Power ON/OFF Switch – a momentary pushbutton switch that alternately turns the inverter

1

on or off.

Status LED Indicator – this green LED illuminates to provide information on the inverter

2

or charger operation.

Stack/Accessories Connection Port (red label) – a RJ11 port that accepts optional

3

accessories.

Info: The stacking feature is NOT available with the ME Series.

Network Connection Port (green label) – a RJ11 port that accepts optional network

4

capable accessories (e.g., Auto Gen Start or Battery Monitor).

Remote Connection Port (blue label) – a RJ11 port that allows an optional remote

5

control to be connected.

BTS Connection Port (yellow label) – RJ11 port that accepts the remote Battery

6

Temperature Sensor (BTS).

1

Power ON/OFF Switch

Status LED Indicator

2

(Charging/Inverting)

Stack/Accessories Port

3

(red label – RJ11 connection)

Network Port

4

(green label – RJ11 connection)

Remote Port

5

(blue label – RJ11 connection)

Battery Temp Sensor Port

6

(yellow label – RJ11 connection)

Figure 1-1, Power Switch, Status LED, and Accessory Connection Ports

© 2012 Magnum Energy, IncPage 2

Introduction

DC Equipment Ground Terminal – this connection is used to tie the exposed chassis

7

of the inverter to the DC grounding system. This terminal accepts CU/AL conductors from
#14 to #2 AWG (2.1 to 33.6 mm

AC Input/Output Connections – two 3/4” knockouts provided with cable-clamp strain

8

reliefs to allow and hold the AC input and output fi eld wiring.

Intake Air Vents – ventilation openings to pull in air to help keep the inverter cool for

9

peak performance.

Positive DC Terminal – provides 360 degree connection point for the positive (+) cable

10

from the battery bank; provided with a Kep or Flange nut on a 5/16-18 bolt to hold the
battery cable to the DC terminal.

Negative DC Terminal – provides 360 degree connection point for the negative (–) cable

11

from the battery bank; provided with a Kep or Flange nut on a 5/16-18 bolt to hold the
battery cable to the DC terminal.

12 Mounting Flange – used to secure the inverter to a shelf or wall.

2

).

8

AC Input/

Output

Connections

7

DC

Equipment

Ground

Terminal

Intake Air Vents

(and on right side)

9

10

Positive (+)
DC terminal

(under cover)

11

Negative (-)

DC terminal

(under cover)

12

Figure 1-2, Electrical Connection Points

© 2012 Magnum Energy, Inc.

Mounting

Flange

Page 3

Introduction

The left side of the ME Series is equipped with the following features (see Figures 1-3 and 1-4):

Exhaust Air Vents – ventilation openings that allow heated air to be removed by the

13

internal cooling fan.

Model/Serial Number Label – includes model/serial number information, date of

14

manufacture, and inverter and charger specifi cations. See the ME specifi cations in
Appendix A for more information and the different models that are available.

AC Access Cover – provides access to the internal AC wiring terminal block (see Figure

15

2-8). This terminal block is used to hardwire all inverter AC input and output wiring
connections. Remove the two screws to access the AC wiring terminal block. The ME2000

models do not have the AC wiring terminal block.

Input Circuit Breaker (CB3) – this circuit breaker protects the unit’s internal charger

16

wiring and pass-thru relay while in Standby mode. This circuit breaker will pop out when
it opens. Press in to reset. This input circuit breaker is not branch-circuit rated, therefore,
branch-circuit rated breakers must be installed in the inverter’s input wiring.

Output Circuit Breakers (CB1 & CB2) – these circuit breakers are branch-rated, but

17

are only provided on the ME2000-15B, ME2000-20B, ME2012-15B, and ME2012-20B
models. They allow the inverter AC loads to be connected directly to the inverter’s output
without requiring an inverter sub-panel. These circuit breakers pop out when they open.
Press in to reset. They can also be manually pulled out to disconnect the inverter’s loads.

CAUTION: Inverter models without the output circuit breakers (CB1 and CB2) must
have branch-rated circuit breakers installed in the inverter’s output wiring.

CAUTION: The inverter’s internal AC transfer relay is rated for 30 amps per leg. The
pass-thru current must be no greater than 30 amps per leg or damage to the relays
may occur.

Number Label

13

Exhaust

Air Vents

(back side)

Model/Serial

14

AC Access
Cover

15

Output Circuit Breakers

(only available on -15B, -20B
output breaker models)

Figure 1-3, Left Side Features (ME2012, ME2512, ME3112)

17

AC Input Circuit

16

Breaker

© 2012 Magnum Energy, IncPage 4

Introduction

AC Access Cover

AC Input Circuit Breaker

16

AC Output Circuit Breakers

17

15

(on -15B, -20B output breaker models only)

Note: ME Series inverter shown above is a -15B or -20B model. Models without AC output breakers
(CB1 & CB2) use carriage bolts to fi ll the breaker openings.

Figure 1-4, Left Side Features (ME2000 Series)

1.2 How an Inverter/Charger Works

An inverter takes direct current (DC) from your batteries and turns it into alternating current (AC).
It also takes alternating current (when connected to an onboard generator or to utility power) and
transforms it into direct current to charge your batteries. These two modes of operation associated
with this inverter/charger are referred to in this document as:

• Inverter Mode:

When the inverter is properly connected to batteries and turned on, the direct current
(DC) from the batteries is transformed into a modifi ed sine wave alternating current (AC).
This AC is similar to the voltage provided by a utility for your home, and is used to power
the electrical appliances (i.e., AC loads) connected to the inverter’s output.

• Standby Mode:

When an external source of AC power (e.g., utility power or onboard generator) is connected
and qualifi ed on the inverter’s AC input, it operates in Standby mode. In Standby mode,
the unit operates as a battery charger to convert the incoming AC power into DC power to
recharge the batteries; and at the same time, automatically closes an internal AC transfer
relay to pass the incoming AC power directly to the inverter’s output to continue powering
the connected electrical appliances.

© 2012 Magnum Energy, Inc.

Page 5

Introduction

1.3 What Appliances will run from a Modifi ed Sine Wave Inverter

Today’s inverters come in two basic output waveforms: modifi ed sine wave (a modifi ed square
wave—see Figure 1-5) and pure sine wave. Modifi ed sine wave inverters approximate a pure sine
waveform and will run most appliances and electronics without any problems. These inverters are
less expensive, and therefore, offer a viable alternative to more expensive pure sine inverters.

The output of the ME Series is a modifi ed sine wave which will run most electronic and household
items, including but not limited to: TV, VCR, satellite dish receiver, computers, and printers. Some
devices such as rechargeable power supplies for phones, drills, and other like items may not run,
and could even be at risk for damage from modifi ed sine wave inverters.

1.3.1 Output Waveform

The inverter’s output waveform is the shape of the wave that alternating current makes as its
voltage rises and falls with time (see Figure 1-5 below). The three basic output waveforms are:

• Modifi ed Sine Wave – Also referred to as a “quasi sine wave” or a “modifi ed square wave”.

This output looks like a one-step staircase and the waveform changes its width to continually
provide the correct RMS output voltage regardless of the battery voltage. Most loads that run
from a sine wave will also run from a modifi ed sine wave. However, things such as clocks and
furnace controllers may have trouble.

• Sine Wave – An AC waveform that looks like rolling waves on water. It rises and falls smoothly

with time. The grid puts out a sine waveform. Any plug-in AC equipment will operate from a
sine wave output inverter.

• Square Wave – The simplest AC waveform. Some types of equipment behave strangely

when powered from a square wave inverter.

200

160
120

80
40

0

40

VOLTAGE

80

120
160

200

Square Wave

Sine Wave

Modified

Sine Wave

TIME

Figure 1-5, AC Waveforms

© 2012 Magnum Energy, IncPage 6

Introduction

1.4 Appliances and Run Time

The ME Series inverter/charger can power a wide range of household appliances including small
motors, hair dryers, clocks, and other electrical devices. As with any appliance using batteries
for power, there is a certain length of time that it can run—this is called “run time.” Actual run
time depends on several variables, including: the size and type of appliance, the type of batteries
installed in your application, as well as the battery’s capacity and age. Other factors such as the
battery’s state of charge (SOC) and temperature can also affect the length of time your appliances
can run.

Appliances such as TVs, VCRs, stereos, computers, and lights can all be successfully powered
by your inverter. Depending on your inverter capacity, electrical appliances that use larger loads
such as coffee pots and hair dryers can be used for short durations. However, loads that are
used for longer periods (stoves, water heaters, etc.) can quickly drain your batteries and are not
recommended for inverter applications.

All electrical appliances are rated by the amount of power they consume (See Table 1-1). The rating
is printed on the product’s nameplate label, usually located on its chassis near the AC power cord.
Even though it is diffi cult to calculate exactly how long an inverter will run a particular appliance,
the best advice is trial and error. Your ME Series inverter has a built-in safeguard that automatically
protects your batteries from over-discharge.

Info: For optimum performance, a minimum battery bank of 200 AH is recommended
for moderate loads (<1000W) and greater than 400 AH for heavy loads (≥1000W).

Table 1-1, Typical Appliance Power Consumption

Device Load Device Load

Blender 400W Coffee Maker 1200W

Computer 300W Color TV 150W

Drill 500W Hair Dryer 1000W

Hot Plate 1800W Iron 1000W
Light (Flo) 10W Light (Inc) 100W
Microwave 1000W Refrigerator 500W

© 2012 Magnum Energy, Inc.

Page 7

Installation

2.0 Installation

WARNING: Installations should be performed by qualifi ed personnel, such as a licensed

or certifi ed electrician. It is the installer’s responsibility to determine which safety
codes apply and to ensure that all applicable installation requirements are followed.
Applicable installation codes vary depending on the specifi c location and application of
the installation.

CAUTION: Review the “Important Product Safety Information” on pages ii-v before
any installation.

CAUTION: The inverter is heavy. Use proper lifting techniques during installation to
prevent personal injury.

The simplifi ed system diagram shown in Figure 2-1 should be reviewed to assist you in planning
and designing your installation. This drawing is not intended to override or restrict any national
or local electrical codes. This drawing should not be the determining factor as to whether the
installation is compliant, that is the responsibility of the electrician and the onsite inspector.

2.1 Pre-Installation

Before installing the inverter, read the entire installation section to determine how you are going
to install your ME inverter/charger. The more thorough you plan in the beginning, the better your
inverter needs will be met.

2.1.1 Unpacking and Inspection

Carefully remove the ME Series inverter/charger from its shipping container and inspect all contents.
Verify the following items are included:

• The ME inverter/charger

• Red and black DC terminal covers with Phillips screws

• AC access cover with two Phillips screws

• Two 5/16” Kep or Flange nuts (installed on the DC terminals)

• Battery Temperature Sensor

• Warning label

• ME Series Owner’s Manual

If items appear to be missing or damaged, contact your authorized Magnum Energy dealer or
Magnum Energy. If at all possible, keep your shipping box. It will help protect your inverter from
damage if it ever needs to be returned for service. Save your proof-of-purchase as a record of
your ownership; it will also be needed if the unit should require in-warranty service.

Record the unit’s model and serial number in the front of this manual in case you need to provide
this information in the future. It is much easier to record this information now, instead of trying
to gather it after the unit has been installed.

2.1.2 Required Tools and Materials

Hardware/Materials

• Strain-reliefs, and appropriate fi ttings • 1/4” mounting bolts and lock washers

• Electrical tape • Wire ties

Tools

• Miscellaneous screwdrivers • Pliers • Wire strippers

• Drill and drill bits • Pencil or marker • Multimeter

• Level • 1/2” wrench

Page 8

© 2012 Magnum Energy, Inc

Installation

Shore Power

120/240 VAC Output

Main Panel

ON

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

ON

120/240
VAC power
to inverter

OFF

OFF

OFF

OFF

OFF

OFF

Generator Power

120/240 VAC Output

AC

Transfer

Switch

Remote Controls (Magnum Accessories)

r
o
t

a

r
e
n

e

G
r
o

i

t

c
a
p

a

C
x
u

l
F

ME-RC50

PWR

FAULT

CHG

INV

ON/OFF

CHARGER

ON/
OFF

INVERTE

R

SELECT

AGS METER SETUPSHORE

TECH

120 VAC Inverter power

(or 120/240 VAC pass-thru

power) to Sub-panel

ME Series
Inverter/

Charger

ME-ARC50

Sub-Panel

OFF

OFF

OFF

OFF

ME-AGS-N

Auto Gen

Controller

(Magnum

Accessory)

30A

OFF

ON

30A

OFF

ON

ON

ON

ON

ON

ON

ON

ON

ON

Start

OFF

OFF

OFF

OFF

ME-BMK

Battery

Monitor with

shunt

(Magnum

Accessory)

Battery Bank

DC

Shunt

BTS

DC

Overcurrent

protection

(Breaker or

Fuse/Switch)

120
VAC

Smart Battery

Combiner

(Magnum

Accessory)

240
VAC

ME-SBC

120
VAC

Figure 2-1, Simplifi ed Installation Diagram for Permanent Installations

© 2012 Magnum Energy, Inc.

Page 9

Installation

2.1.3 Locating the Inverter

Only install the inverter in a location that meets the following requirements:
Clean and Dry – The inverter should not be installed in an area that allows dust, fumes, insects, or

rodents to enter or block the inverter’s ventilation openings. This area also must be free from any
risk of condensation, water, or any other liquid that can enter or fall on the inverter. The inverter
uses stainless steel fasteners, plated copper busbars, and a power-coated aluminum base. The
internal circuit boards are conformal coated. All of this is done to help fi ght the harmful effects
of corrosive environments. However, the inverter’s life is uncertain if used in the above types of
environments, and inverter failure under these conditions is not covered under warranty.

Info: If the inverter is installed in an area where moisture may occur, we recommend
putting silicone dielectric grease compound into the electrical ports (Items 3-6 as
shown in Figure 1-1). Before installing the cables, or if leaving any ports open, squirt a
liberal amount into each port. Silicone dielectric compound makes an effective moisture

and corrosive barrier to help protect and prevent corrosion to the RJ11 connections.

Cool – The inverter should be protected from direct sun exposure or equipment that produces
extreme heat. The ambient temperature around the inverter must not exceed 77°F (25°C) to
meet power specifi cations.

Ventilation – In order for the inverter to provide full output power and avoid over-temperature
fault conditions; do not cover or block the inverter’s ventilation openings, or install this inverter in
an area with limited airfl ow. The inverter uses two fans to provide forced-air cooling, these fans
pull in air through the intake vents (see Figure 1-2, Item 9) and blow out air through the exhaust
vents (see Figure 1-3, Item 13). Allow at the minimum an airspace clearance of 6” (15.2 cm) at
the intake and exhaust vents, and 3” (7.6 cm) everywhere else to provide adequate ventilation.

If installed in an enclosure, a fresh-air intake opening must be provided directly to the front side
(intake vents) of the inverter, and an exhaust opening on the back side (exhaust vents) of the
inverter. This allows cool air from the outside to fl ow into the inverter, and heated air to exit the
inverter and the enclosure. When mounted in an enclosed compartment, airfl ow must be ≥ 100
cfm in order to maintain no more than a 68°F (20°C) rise in compartment temperature.

CAUTION: Do not mount this inverter in a zero clearance compartment, nor cover or
obstruct the ventilation openings—overheating may result.

Safe – Keep any fl ammable/combustible material (e.g., paper, cloth, plastic, etc.) that may be
ignited by heat, sparks, or fl ames at a minimum distance of 2 feet (61 cm) away from the inverter.

WARNING: The ME Series inverter/charger is not ignition-protected. Do not install this
inverter in any area that contains extremely fl ammable liquids like gasoline or propane.

Close to the battery bank – The inverter should be located as close to the batteries as possible.
Long DC wires tend to loose effi ciency and reduce the overall performance of an inverter. However,
the unit should NOT be installed in the same compartment as the batteries, or mounted where it
will be exposed to gases produced by the batteries. These gases are corrosive and will damage the
inverter; also, if these gases are not ventilated and allowed to collect, they could ignite and cause
an explosion.

Accessible – Do not block access to the inverter’s remote control and accessory ports, as well
as the inverter’s controls and status indicator. Also allow enough room to access the AC and DC
wiring terminals and connections, as they will need to be checked and tightened periodically. See
Figure 2-3 for the ME Series’ inverter/charger dimensions.

Away from sensitive electronic equipment – High-powered inverters can generate levels
of RFI (Radio Frequency Interference). Locate any electronic equipment susceptible to radio
frequency and electromagnetic interference as far away from the inverter as possible.

Page 10

© 2012 Magnum Energy, Inc

Installation

2.2 Mounting the Inverter

The inverter base can reach a temperature up to 90°C (194°F) and should be mounted on a
noncombustible surface*. This surface and the mounting hardware must also be capable of
supporting at least twice the weight of the inverter. To meet regulatory requirements, the ME
Series must be mounted in one of the following positions, as shown in Figure 2-2:

• above or under a horizontal surface (shelf or table)

• or, on a vertical surface (wall) with the DC terminals to the right

• or, on a vertical surface (wall) with DC terminals toward the bottom, MP-HOOD (inverter hood)
installed on the top, and either the ME-CB (Conduit Box) or MMP Series (single inverter) enclosure
installed on the inverter’s bottom.

Info: The ME-CB, MMP and MP Series enclosures prevent material from falling out the
bottom in the event of an internal fi re, and also allow suffi cient ventilation to prevent the
inverter from overheating under normal operating conditions. The MP-HOOD inverter
hood helps prevent items from falling inside causing damage to the inverter.

Info: Magnum provides a backplate for mounting the inverter. These backplates also
provide the ability to mount either the MMP Series enclosure (PN: BP-MMP) or the MP
Series Enclosure (PN: BP-S single plate, or BP-D dual plate).

After determining the mounting position, refer to the physical dimensions as shown in Figure
2-3, or use the base of the inverter as a template to mark your mounting screw locations. After
marking the mounting screw locations, mount the unit with appropriate mounting hardware.

* Noncombustible surface – A surface made of material that will not ignite, burn, support combustion, or
release fl ammable vapors when subjected to fi re or heat as per the ASTM E136 standard. For the most part,
these are materials that are largely comprised of inorganic matter such as stone, steel, iron, brick, tile,
concrete, slate, and glass. Avoid common building materials such as gypsum board, painted surfaces, wall
coverings, and all types of wood.

30

30

SHELF OR TABLE

M

OUNTED

(RIGHT SIDE UP)

WALL MOUNTED

(DC TERMINALS TO THE RIGHT)

SHELF OR TABLE MOUNTED

(UP SIDE DOWN)

WALL MOUNTED

(DC TERMINALS ON THE

BOTTOM*)

*WHEN THE INVERTER IS MOUNTED

IN THIS POSITION, THE MP-HOOD

(

INVERTER HOOD ON TOP), AND

THE ME-CB (CONDUIT BOX ON

BOTTOM) OR MP/MMP SERIES

ENCLOSURES MUST BE USED

Figure 2-2, Approved Mounting Positions

© 2012 Magnum Energy, Inc.

Page 11

Installation

8"

(20.3 cm)

30

30

(left side shown)

Note: ME2000 models have the same
dimensions as those shown below.

Right

side

(12.4 cm)

4 ƚ"

13 ¾"

(34.9 cm)

2"

(5.1 cm)

6 ƙ"

(16.8 cm)

30

ME2000 modelME2012/ME2512/ME3112 models

(left side shown)

4 ƚ"

(12.4 cm)

Page 12

12"

(30.5 cm)

Back

side

Left
side

Top

side

Keyhole slots (x4) and mounting

holes (x4) accept up to 9/32"

(7 mm) screw/bolt

Front

side

12 ƙ"

(32.1 cm)

Figure 2-3, ME Series Dimensions and Side Reference

© 2012 Magnum Energy, Inc

Installation

2.3 Wiring the Inverter - General Requirements

This section describes the requirements and recommendations for wiring the ME Series inverter/
charger. Before wiring the inverter/charger, read all instructions.

All wiring should meet all local codes and industry standards, and be performed by
qualifi ed personnel such as a licensed electrician.

The NEC (National Electric Code, ANSI/NFPA 70) for the United States and the CEC (Canadian
Electrical Code) for Canada provide safe wiring standards. The NEC/CEC list requirements for wire
sizes, overcurrent protection, and installation methods/standards.

Inverter/charger systems involve power from multiple sources (e.g., inverter, generator, utility
power, batteries, etc.) which makes the wiring more hazardous and challenging.

The input and output AC and DC circuits are isolated from the inverter chassis. The inverter system
grounding is the responsibility of the installer in accordance with the NEC/CEC and local codes.

WARNING: Ensure the sources of DC power (i.e., batteries) and AC power (utility
power or AC generator) are de-energized (i.e., breakers opened, fuses removed)
before proceeding—to prevent accidental shock.

2.3.1 Protecting Wire – Conduit Box

The AC and DC wires to and from the inverter must be protected as required by code. This can
be done by using jacketed wires or by feeding the wires through conduit. Magnum offers a DC
conduit box (ME-CB), a single inverter enclosure (MMP Series), and a multiple inverter enclosure
(MP Series) that include the necessary AC and DC inverter breakers that allow both the AC and
DC conduit to be connected to the inverter.

Info: The strain reliefs can be removed and replaced with 3/4” grommets if you are using
either the ME-CB conduit box, MMP or MP enclosure, and the AC wires are individual
conductors (i.e., not jacketed).

2.3.2 Wiring Requirements

• All conductors that are at risk for physical damage must be protected by tape, or placed
in a raceway.

• Always check for existing electrical, plumbing, or other areas of potential damage prior to
making cuts in structural surfaces or walls.

• Do not mix AC and DC wiring in the same panel unless specifi cally approved/designed for
both AC and DC wiring. Where DC wiring must cross AC or vice-versa, try to make the
wires 90° to one another at the crossing point.

• Both AC and DC overcurrent protection must be provided as part of the installation.

• The inverter requires a reliable negative and ground return path directly to the battery.

• Use only copper wires with a minimum temperature rating of 75°C.

2.3.3 Wire Routing

Before connecting any wires, determine all wire routes to and from the inverter. Conductors passing
through walls, bulkheads, or other structural members must be protected to minimize insulation
damage, such as chafi ng. During installation, always avoid placing conductors near sources of
chafi ng caused by vibration or constant rubbing. Typical routing scenarios include:

• AC input wiring from utility power source to the inverter

• AC input wiring from an onboard generator (optional) to the inverter

• DC input wiring from the batteries to the inverter

• AC output wiring from the inverter to the coach’s AC main panel or to dedicated circuits

• Battery Temperature Sensor cable from the inverter to the batteries

• Remote control cable (optional) to the inverter

• Ground wiring to and from the inverter

2.3.4 Torque Requirements

• Torque all AC wiring connections to 16 in lbf (1.8 N-m). Torque DC cable connections from
10 to 12 ft lbf (13.6 to 16.3 N-m).

© 2012 Magnum Energy, Inc.

Page 13