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Summary of Contents for Megger MOM3
- Page 1 USER GUIDE MOM3 Micro-ohmeter Register User Guide Support megger.com/register Firmware updates megger.com/support ENGLISH...
- Page 2 © 2013-2025, Megger Sweden AB. All rights reserved. The contents of this manual are the property of Megger Sweden AB. No part of this work may be reproduced or transmitted in any form or by any means, except as permitted in written license agreement with Megger Sweden AB.
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Page 3: Table Of Contents
Safety, Hazard and Warning symbols on the instrument Warnings, Cautions and Notes Safety warnings Important Test Leads safety warning Device Storage 3. Instrument Overview MOM3 Display layout Instrument key buttons 4. Functions Test positions For all test functions 4.2.1 Low Temperature Charging 5. - Page 4 Battery removal procedure 8. Specifications 9. Accessories and Equipment Included accessories Optional accessories Calibration, Repair and Warranty 10.1 Calibration and repair 10.2 Warranty 10.3 Returning Equipment 11. Decommissioning 11.1 WEEE Directive 11.2 Battery disposal 12. Worldwide Sales Offices 13. Note www.megger.com MOM3...
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Page 5: Introduction
The MOM3 is designed to enable a full day’s work of testing without recharging the battery. It can store, more than 2000 test values and transfer test data via USB-C to a PC and via Wi-Fi to the EGIL 200 Circuit Breaker Analyser (optional and future). -
Page 6: Safety Warnings And Standards
Safety warnings Before using the MOM3, inspect the entire device for any signs of physical damage, such as cracks, dents, or exposed components. The presence of any damage indicates a potential safety risk. In such cases, do not operate the device and immediately contact technical support for guidance Connecting –... -
Page 7: Important
High current on output terminals. ƒ The MOM3 will be able to test when is charging, however, this can only be performed using the original ƒ charger provided with the equipment. Any other charger or power supply can be damaged during a test Disconnecting –... -
Page 8: Instrument Overview
Instrument Overview 3. Instrument Overview MOM3 Item Description Item Description Current output terminal (-) Confirm button (Ok) Current output terminal (+) Function selector Display Connector for the voltage (+) sense lead and the trig function Ground (earth) terminal Connector for the voltage (–) sense lead... -
Page 9: Display Layout
Next test current “A” or µΩ Test current in A Previews measurement Instrument key buttons Use the button pad under the screen to navigate through the menu of the MOM3 to: Button Description 1 and 4 Mode-specific; see screen for details... -
Page 10: Functions
Ensure the instrument is in the OFF position when not in use. Settings Measurements For all test functions New MOM3 units or those after long storage require up to four (4) minutes initial charging. Watch the indicator bar, when it changes from red to green, the ultra-capacitors are ready to use. - Page 11 Functions „ The operating current requirements NOTE : For optimal performance in cold environments, allow the device to adjust to ambient temperature before operation, and provide sufficient time for the supercapacitors to charge completely before testing: www.megger.com MOM3...
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Page 12: Operation
Finalize the Circuit Breaker testing. 5.3.1 Circuit Breaker operation In settings press in the Cir- cuit Breaker setup. Press to change the settings of the breaker (1 to 11). In the right image B. Select the breaker and press MOM3 www.megger.com... -
Page 13: Naming A Circuit Breaker
NOTE : The upper limit cannot surpass 3Ω and the lower limit can´t surpass upper limit. Rotate dial to Test Results Indication: Green screen: Results within resist- ance limits - Test passed. Red screen: Results outside resist- ance limits - Test failed. www.megger.com MOM3... -
Page 14: Egil200 Remote Mode ( Launch Q4 2025)
Operation EGIL200 Remote mode ( Launch Q4 2025) ƒ Visualize the connectivity between the MOM3 and the EGIL200 through a signal icon and connection established icon Import the setup for phase breakers already defined in the EGIL200 using the ƒ... -
Page 15: Date And Time Settings
5.7.1 Data management Select the test current (A) and press the “TEST” button. The resistance results will be displayed in µΩ, mΩ, or Ω. If you continue testing, you will see the two most recent results in the blue banner. www.megger.com MOM3... -
Page 16: Battery Charging
Press to return to results. PC Connection and File Access When you connect your MOM3 to a PC using the provided USB cable, it will automatically be recognized as an external drive labeled "MOM3_DISK" without requiring any additional drivers or setup. -
Page 17: Battery Error Screens
The battery is too low to perform a test. Battery Critically Low The battery is too low to perform a Test and the MOM3 will shut down. Battery Battery Temperature too high The MOM3 need to cool down be- fore continue testing. -
Page 18: Maintenance
Test leads should be checked before use for damage and continuity. Ensure the unit is kept clean and dry after use. Cleaning Disconnect from mains power / charger. Wipe the instrument with a clean cloth dampened with either water or isopropyl alcohol (IPA). MOM3 www.megger.com... -
Page 19: Battery
The battery condition icon is positioned at the top right-hand corner of the display. This icon is always displayed when the MOM3 is switched on. When running the icon indicates the state of charge, the icon will be filled in proportion to the state of charge. -
Page 20: Battery Removal Procedure
WARNING : Remove all test leads before removing the battery cover. The battery is housed in the lower section of the MOM3, behind the battery lock. Looking at the back of the instrument. 1. Remove the test leads and ensure the MOM3 is switched off. -
Page 21: Specifications
± 0.1% of reading ± 0.05% of range Typical inaccuracy Only valid when the following conditions are met: - Resistive load - Ambient temperature 25 °C ± 3 °C. - Maximum test current per the range being used. Test interval www.megger.com MOM3... -
Page 22: Accessories And Equipment
5 m (16 ft) Black, 25 mm GA-00394 Ground 5 m (16 ft), Green / yellow GA-90003 cable Battery HC-04290 charger USB-C to 2 m (6.6ft) HG-00240 USB-C Carrying 50-11012 strap Soft For MOM3, Charger and Cables GD-90070 carrying case MOM3 www.megger.com... -
Page 23: Optional Accessories
5 m (16 ft), Red 60 A clip KG-00522 Sensing lead 5 m (16 ft), Black 60 A clip KG-00520 Switched 1.5m red test probe with the switch in the handle GA-90006 test and black test probe. (Potential) probe www.megger.com MOM3... -
Page 24: Calibration, Repair And Warranty
Calibration, Repair and Warranty Calibration, Repair and Warranty Megger operate fully traceable calibration and repair facilities to make sure your instrument continues to provide the high standard of performance and workmanship that is expected. These facilities are complemented by a worldwide network of approved repair and calibration companies, which offer excellent in-service care for your Megger products. -
Page 25: Decommissioning
WEEE Directive The crossed out wheeled bin symbol placed on Megger products is a reminder not to dispose of the product at the end of its life with general waste. An end-of-life Megger product can be returned to Megger at any time at no charge for disposal. -
Page 26: Worldwide Sales Offices
+46 08 510 195 00 seinfo@megger.com POLSKA +48 22 2809 808 info.pl@megger.com PORTUGAL +34 916 16 54 96 info.es@megger.com România +40 21 2309138 info.ro@megger.com SLOVENSKO +421 2 554 23 958 info.sk@megger.com Türkiye +46 08 510 195 00 seinfo@megger.com MOM3 www.megger.com... -
Page 27: Note
Note 13. Note My measurements and notes www.megger.com MOM3... - Page 28 Note MOM3 www.megger.com...
- Page 29 Note www.megger.com MOM3...
- Page 32 Inc and is used under licence. Inc and is used under licence. www.megger.com www.megger.com MOM3_UG_en_V01a MOM3_UG_en_V01a The word ‘Megger’ is a registered trademark. Copyright © 2025 The word ‘Megger’ is a registered trademark. Copyright © 2025 Art No. ZP-BK01E Doc. BK037385AE V01a 2025...
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