Magnum Energy ME Series Owner's Manual
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Magnum Energy ME Series Owner's Manual

Me series modifi ed sine wave inverter/chargers
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J, R. Potter
February 13, 2025

Unit is not sending battery AC power to interior circuits.

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1 comments:
Mr. Anderson
February 13, 2025

The Magnum Energy ME Series unit may not be sending battery AC power to interior circuits because it is in standby mode, where it monitors for acceptable AC voltage from an external source before activating the AC transfer relay. If no AC source is connected or the voltage is not acceptable, the relay remains open, preventing power transfer. Additionally, issues such as a tripped AC input circuit breaker, incorrect wiring, or battery-related problems could also cause this issue.

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Summary of Contents for Magnum Energy ME Series

  • Page 1 ME Series Modifi ed Sine Wave Inverter/Chargers Owner’s Manual...

  • Page 2: Contact Information

    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 the ME Series Inverter/Charger 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.

  • Page 3: Important Safety Instructions

    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. Remedy: This symbol provides possible solutions for related issues. SAVE THESE INSTRUCTIONS Page ii © 2010 Magnum Energy, Inc.
  • Page 4 In the event of accidental exposure to battery acid, wash thoroughly with soap and water. In the event of exposure to the eyes, fl ood them for at least 15 minutes with running water and seek immediate medical attention. • Recycle old batteries. SAVE THESE INSTRUCTIONS © 2010 Magnum Energy, Inc. Page iii...

  • Page 5: Table Of Contents

    Appendix B - Battery Information ............51 Battery Location ..................51 Battery Types ...................51 Battery Temperature .................51 Battery Bank Sizing ..................51 Battery Bank Sizing Worksheet ..............52 Battery Wiring Confi gurations ..............53 Limited Warranty ................55 How to Receive Repair Service ............55 Page iv © 2010 Magnum Energy, Inc.
  • Page 6 Figure 2-7, Battery Temperature Sensor ..................17 Figure 2-8, ME Series Inverter/Charger - AC Wiring ................ 20 Figure 2-9, ME Series Inverter/Charger - AC Wiring (Access Cover) ..........20 Figure 2-10, AC Terminal Block ..................... 21 Figure 2-11, AC Wiring for Single In - Single Out (30 A) Confi gurations ..........24 Figure 2-12, AC Wiring for Single In - Single Out (60 A) Confi...

  • Page 7: Introduction

    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.

  • Page 8: Features And Benefi Ts

    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 On or Off.

  • Page 9: Figure 1-1, Power Switch, Status Led, And Accessory Connection Ports

    Figure 1-1, Power Switch, Status LED, and Accessory Connection Ports NTAKE ENTS AND ON RIGHT SIDE OSITIVE AC I TERMINAL NPUT UTPUT UNDER COVER ONNECTIONS EGATIVE TERMINAL UNDER COVER QUIPMENT ROUND ERMINAL OUNTING LANGE Figure 1-2, Electrical Connection Points Page 3 © 2010 Magnum Energy, Inc...

  • Page 10: Figure 1-3, Left Side Features

    Introduction The left side of the ME Series is equipped with the following features (see Figure 1-3): Exhaust Air Vent - ventilation openings that allow heated air to be removed by the internal cooling fan. Model/Serial Number Label - includes model/serial number information, date of manufacture, and inverter and charger specifi...

  • Page 11: How An Inverter/Charger Works

    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.

  • Page 12: 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) Light (Inc) 100W Microwave 1000W Refrigerator 500W © 2010 Magnum Energy, Inc. Page 6...

  • Page 13: Installation

    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;...

  • Page 14: Figure 2-1, Simplifi Ed Installation Diagram For Permanent Installations

    M E - S B C S m art B attery C o m b in er (M ag n u m A ccesso ry ) Figure 2-1, Simplifi ed Installation Diagram for Permanent Installations © 2010 Magnum Energy, Inc. Page 8...
  • Page 15 Do not install this inverter in any area that contains extremely fl ammable liquids like gasoline or propane, or in locations that require ignition-protected devices. WARNING: The ME Series inverter/charger is not ignition-protected and may not be located in an engine compartment with gasoline fueled engines under any circumstances.

  • Page 16: Mounting The Inverter

    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: •...

  • Page 17: Figure 2-3, Me Series Dimensions And Side Reference

    Keyhole slots (x4) and mounting holes 4 7/8" (x4) accept (12.4 cm) up to 9/32" (7 mm) screw/bolt 12" (30.5 cm) 12 5/8" (32.1 cm) Figure 2-3, ME Series Dimensions and Side Reference Page 11 © 2010 Magnum Energy, Inc...

  • Page 18: Wiring The Inverter - General Requirements

    Installation 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...

  • Page 19: Dc Wiring

    • Color code the DC cables/wires with colored tape or heat shrink tubing: RED for positive (+), WHITE for negative (-), and GREEN (or bare copper) for DC ground to avoid polarity problems. Page 13 © 2010 Magnum Energy, Inc...

  • Page 20: Figure 2-4, Dc And Battery Temperature Sensor Wiring

    D C S y s te m G rounding point Battery [E le c trode C onduc tor (i .e ., c ha s s is/fra m e)] Bank Figure 2-4, DC and Battery Temperature Sensor Wiring © 2010 Magnum Energy, Inc. Page 14...

  • Page 21: Table 2-1, Recommended Dc Wire/Overcurrent Device For Rated Use

    Note 4 - Per the NEC, the DC grounding electrode conductor can be a #6 AWG (33.6 mm ) conductor if that is the only connection to the grounding electrode and that grounding electrode is a rod, pipe, or plate electrode. Page 15 © 2010 Magnum Energy, Inc...

  • Page 22: Figure 2-5, Battery Hardware Installation

    Ensure nothing is 5/8" length) placed between the cable ring lug and battery battery the battery post. cable (with post ring lug) Figure 2-5, Battery Hardware Figure 2-6, Inverter DC Hardware Installation Installation © 2010 Magnum Energy, Inc. Page 16...

  • Page 23: Figure 2-7, Battery Temperature Sensor

    3) the correct DC voltage and polarity have been verifi ed. Info: For the ME Series inverter/charger to perform optimally, a minimum battery bank of 200 AH is recommended for moderate loads (<1000W) and greater than 400 AH for heavy loads (≥1000W).
  • Page 24 If the batteries are in an enclosure, perform a fi nal check of the connections to the battery terminals, and then close and secure the battery enclosure. © 2010 Magnum Energy, Inc. Page 18...

  • Page 25: Ac Wiring

    AC circuits. The ME Series allows the AC input and output wiring to be permanently wired. The inverter’s input is wired to the service/distribution panel (main panel). The inverter’s output is then wired to a dedicated panel (sub-panel) .

  • Page 26: Figure 2-8, Me Series Inverter/Charger - Ac Wiring

    AC Output 2 Circuit Breaker (CB2) (on -15B, -20B output breaker models only) AC Output 1 Circuit Breaker (CB1) (on -15B, -20B output breaker models only) Figure 2-9, ME Series Inverter/Charger - AC Wiring (Access Cover) © 2010 Magnum Energy, Inc. Page 20...

  • Page 27: Figure 2-10, Ac Terminal Block

    AC ground terminal to the input and output ground connections. HOT 1 OUT HOT 2 IN HOT 1 IN HOT 2 OUT NEUT IN NEUT OUT AC GROUND (In & Out) Figure 2-10, AC Terminal Block Page 21 © 2010 Magnum Energy, Inc...
  • Page 28 3. After verifying all AC connections are correct and all inverter AC terminal screws are torqued to 16 in lbf (1.8 N-m), replace the AC wiring access cover and the covers on the main electrical/ distribution panel. © 2010 Magnum Energy, Inc. Page 22...

  • Page 29: Table 2-3, Ac Input/Output Wiring Confi Gurations (Me2012, Me2512, And Me3112 Models)

    Diagram Note 1: AC Source is from either shore power or an onboard generator. Note 2: If two legs of 30A @ 120 VAC are used, they must be from the same source. Page 23 © 2010 Magnum Energy, Inc...

  • Page 30: Figure 2-11, Ac Wiring For Single In - Single Out (30A) Confi Gurations

    (S h o re P o w e r/G e n e ra to r In p u t ) (In v e rte r L o a d s ) Figure 2-11, AC Wiring for Single In - Single Out (30A) Confi gurations © 2010 Magnum Energy, Inc. Page 24...

  • Page 31: Figure 2-12, Ac Wiring For Single In - Single Out (60A) Confi Gurations

    (S h o re P o w e r/G e n e ra to r In p u t ) (In v e rte r L o a d s ) Figure 2-12, AC Wiring for Single In - Single Out (60A) Confi gurations Page 25 © 2010 Magnum Energy, Inc...

  • Page 32: Figure 2-13, Ac Wiring For Single In - Dual Out Confi Gurations

    M a in P a n e l (S h o re P o w e r/G e n e ra to r In p u t ) Figure 2-13, AC Wiring for Single In - Dual Out Confi gurations © 2010 Magnum Energy, Inc. Page 26...

  • Page 33: Figure 2-14, Ac Wiring For Dual In - Single Out Confi Gurations

    (S h o re P o w e r/G e n e ra to r In p u t ) (In v e rte r L o a d s ) Figure 2-14, AC Wiring for Dual In - Single Out Confi gurations Page 27 © 2010 Magnum Energy, Inc...

  • Page 34: Figure 2-15, Ac Wiring For Dual In - Dual Out Confi Gurations

    (S h o re P o w e r/G e n e ra to r In p u t ) (In v e rte r L o a d s ) Figure 2-15, AC Wiring for Dual In - Dual Out Confi gurations © 2010 Magnum Energy, Inc. Page 28...
  • Page 35 2.5.7 AC Conductor Wiring (ME2000 models) The ME2000 is a new model in the ME Series family. It offers a cost-effective alternative to the ME2012 while still providing the same features. This model has a slightly smaller height, but otherwise has the same footprint as the other ME Series inverters. The ME2000 can be wired in a single in - single out confi...

  • Page 36: Table 2-4, Ac Input/Output Wiring Confi Gurations (Me2000 Models)

    (30A @ 15A/leg Pass-thru 120 VAC) (30A max.); capacity -20B models: 20A/leg (30A max.) Wiring Figure 2-16 Figure 2-17 Diagram Note 1: AC Source is from either shore power or an onboard generator. © 2010 Magnum Energy, Inc. Page 30...

  • Page 37: Figure 2-16, Ac Wiring For Single In - Single Out (Me2000 Models) Confi Gurations

    (S h o re P o w e r/G e n e ra to r In p u t ) (In v e rte r L o a d s ) Figure 2-16, AC Wiring for Single In - Single Out (ME2000 models) Confi gurations Page 31 © 2010 Magnum Energy, Inc...

  • Page 38: Figure 2-17, Ac Wiring For Single In - Dual Out (Me2000-15B/-20B Models) Confi Gurations

    ( S h o re P o w e r/G e n e ra to r In p u t ) Figure 2-17, AC Wiring for Single In - Dual Out (ME2000-15B/-20B models) Confi gurations © 2010 Magnum Energy, Inc. Page 32...

  • Page 39: Grounding Inverters

    The ME Series inverter/charger uses both AC and DC power; however, the AC electrical system is isolated from the DC electrical system by an internal transformer. Although this inverter/charger has two electrical systems, each must be properly grounded and connected to a common point.
  • Page 40 (see Figure 2-18). The DC ground terminal on the ME Series must also be connected to the boat’s safety ground bus. This ensures that both the inverter’s AC and DC ground terminals are connected to the boat’s safety ground bus as a safety measure to provide protection against faults, and to provide a path for AC fault currents while the boat is connected to shore power.

  • Page 41: Figure 2-18, Neutral-To-Ground Connection (Inverter Mode)

    AC source (e.g., shore power or a generator) is qualifi ed, another neutral-to-ground connection is introduced in the system. When the ME Series is connected to this external AC source and goes into Standby Mode, the internal relay automatically opens the neutral-to-ground connection, as shown in Figure 2-19.

  • Page 42: Inverter Notifi Cation Requirements

    Reverse the removed bolt, and place it back terminal bolt/nut, in the chassis hole to attach a correctly sized reversed and ground cable to the ME Series chassis, as tightened shown in Figure 2-20. Place the washer and nut on the bolt, over...

  • Page 43: Final Inspection

    15 seconds), the incoming AC power will transfer through the inverter to the inverter’s AC output and power the light bulb. Verify the inverter’s status indicator and that the light bulb comes on. Page 37 © 2010 Magnum Energy, Inc...

  • Page 44: Figure 2-22, Ac Voltage Checks

    B LU E A C O u tp u t 120 V ac 120 V ac (± 5% ) (± 5% ) O R A N G E Figure 2-24, AC Voltage Checks (ME2000-15B/-20B models) © 2010 Magnum Energy, Inc. Page 38...

  • Page 45: Operation

    5 to 50 watts using the ME-RC50 remote display. Inverting - When a load greater than 5 watts is connected to the inverter output, the ME Series “inverts” the DC power from the battery and supplies 120 VAC power to your sub-panel. The inverter’s green LED fl...

  • Page 46: Standby Mode

    Operation Standby Mode The ME Series features an automatic transfer relay and an internal battery charger when operating in Standby Mode. Standby Mode begins whenever AC power (shore power or generator) is connected to the inverter’s AC input. Once the AC voltage and frequency of the incoming AC power is within the AC input limits, an automatic AC transfer relay is activated.

  • Page 47: Figure 3-3, Automatic 4-Stage Charging Graph

    Info: If the battery voltage falls to the re-bulk voltage (12.1 VDC) or lower, the unit will begin another bulk charge. * These settings in the ME Series are changeable and leave the factory with default values (see Table 3-2, Inverter/Charger Default Values). These default values are adequate for most installations, however, if you determine that some of the values need to be changed for your particular system, the ME-RC50 remote control may be purchased to adjust these settings.

  • Page 48: Transfer Time

    The transfer from Standby Mode to Inverter Mode occurs in approximately 16 milliseconds. While the ME Series is not designed as a computer UPS system, this transfer time is usually fast enough to hold them up. However, the VAC dropout setting has an effect on the ability of the loads to transfer without resetting.

  • Page 49: Protection Circuitry Operation

    10.0 VDC 10.0 VDC 10.0 VDC (1 minute delay) (9.0 - 12.2 VDC) (9.0 - 12.2 VDC) (9.0 - 12.2 VDC) LBCO (immediate) 8.5 VDC 8.5 VDC 8.5 VDC *adjustable with remote control Page 43 © 2010 Magnum Energy, Inc...

  • Page 50: Inverter Startup

    AC loads connected to the inverter’s output). Power ON/OFF pushbutton switch Charging/Inverting Status LED indicator Figure 3-5, Power Switch and Status Indicator © 2010 Magnum Energy, Inc. Page 44...

  • Page 51: Factory Default Values

    Operation Factory Default Values Your ME Series inverter/charger uses default values for the adjustable settings (see Table 3-2) that are adequate for most installations. If some of your operating parameters need to be changed from the default values, the optional ME-RC50 remote control can be used to make those changes. To help you determine if you need the ME-RC50 remote display, information on the inverter/charger settings that can be changed is provided below.

  • Page 52: Maintenance And Troubleshooting

    Maintenance and Troubleshooting 4.0 Maintenance and Troubleshooting The following information is provided to help you keep your ME Series inverter/charger in optimum operational condition. Recommended Inverter and Battery Care The ME Series inverter/charger is designed to provide you with years of trouble-free service.

  • Page 53: Troubleshooting

    Maintenance and Troubleshooting Troubleshooting The ME Series inverter/charger is a fairly simple device to troubleshoot. There are only two active circuits (AC and DC) as well as a charging circuit. The following chart is designed to help you quickly pinpoint the most common inverter failures.

  • Page 54: Resetting The Inverter

    15 seconds it should come on and fl ash rapidly to indicate the inverter has reset. The Status LED will go off after the pushbutton is released. Figure 4-1, Performing an Inverter Reset © 2010 Magnum Energy, Inc. Page 48...

  • Page 55: Appendix A - Specifi Cations And Optional Equipment

    42 lb (19.1 kg) 42 lb (19.1 kg) 46 lb (20.9 kg) 51 lb (23.1 kg) Max operating altitude 15,000’ (4570 m) Specifi cations @ 25°C (unless otherwise noted) - Subject to change without notice. Page 49 © 2010 Magnum Energy, Inc...

  • Page 56: Optional Equipment And Accessories

    Appendix A - Specifi cations A-2 Optional Equipment and Accessories The following Magnum Energy components are available for use with the ME Series inverter/charger. Some of these items are required depending upon the intended use of the inverter. MMP Series Enclosures The MMP175-30D.

  • Page 57: Appendix B - Battery Information

    AC shore power or generator power. Info: For the ME Series inverter/charger to perform optimally, a minimum battery bank of 200 AH is recommended for moderate loads (<1000W) and greater than 400 AH for heavy loads (≥1000W).

  • Page 58: Battery Bank Sizing Worksheet

    AC source for the calculated load, the Total Amp- Hours should be multiplied by 1.2 to factor in an average 80% inverter effi ciency. © 2010 Magnum Energy, Inc. Page 52...

  • Page 59: Battery Wiring Confi Gurations

    = 200 AH @ 12 VDC 6 VDC 6 VDC 200 AH @ 6 VDC (200 AH) (200 AH) add voltage and capacity together add voltage add capacity in series in parallel Figure B-3, Series-Parallel Battery Wiring Page 53 © 2010 Magnum Energy, Inc...

  • Page 60: Figure B-4, Battery Bank Wiring Examples (12-Volt)

    (6 VDC + 6 VDC) battery battery (200 AH) (200 AH) 12 volt battery bank (two strings of two 6-volt batteries wired in series and connected in parallel) Figure B-4, Battery Bank Wiring Examples (12-volt) © 2010 Magnum Energy, Inc. Page 54...

  • Page 61: Limited Warranty

    Magnum Energy’s limit of liability under the limited warranty shall be the actual cash value of the product at the time the original purchaser returns the product for repair, determined by the price paid by the original purchaser. Magnum Energy shall not be liable for any other losses or damages.
  • Page 62 Magnum Energy, Inc. 2211 West Casino Rd. Everett, WA 98204 Phone: 425-353-8833 Fax: 425-353-8390 Web: www.magnumenergy.com ME Series Owner’s Manual (PN: 64-0002 Rev A)

This manual is also suitable for:

Me2000-20bMe2000-15bMe2012-20bMe2012-15bMe2512Me3112

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