Related Manuals for Megger MOM2
Summary of Contents for Megger MOM2
- Page 1 MOM2 MOM2 Win Micro-ohmmeter User’s Manual Art No. ZP-BD03E Doc. BD0333FE V06a 2016...
- Page 3 © 2013-2016, 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. Megger Sweden AB has made every reasonable attempt to ensure the completeness and accuracy of this document.
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Page 4: Table Of Contents
Setup ............... 34 5 Operating instructions Select language ..........34 ..............22 7.3 Start MOM2 Win ..........35 5.1 General instructions .......... 22 Exit MOM2 Win ..........35 Important regarding all testing ......22 7.4 Connecting to MOM2 ........35 Power supply .......... - Page 5 Program "User" positions ........ 39 7.7 Calibration ............40 Required equipment ........40 Procedure ............40 Voltmeter calibration ........40 Ammeter calibration ........40 Calibration report ..........41 8 Specifications ..............42 Specifications MOM2 ..........42 Index ............44 BD0333FE ZP-BD03E MOM2...
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Page 6: Safety
It is not possible to use the MOM2 for testing After completing the measurements, you can during battery charging. -
Page 7: Symbols On The Instrument
Caution, refer to accompanying docu- ments. Protective conductor terminal. WEEE, Waste Electrical and Electronic Equipment. Please utilize your lo- cal WEEE collection facilities in the disposal of this product and otherwise observe all applicable requirements. Equipment complies with current EU directives. BD0333FE ZP-BD03E MOM2... -
Page 8: Introduction
2 INTRODUCTION Introduction 2.1 Basic technical The MOM2 is designed to measure the resistance of circuit breaker contacts, bus-bar joints, contact ele- description ments in bus-bars and other high-current links. When contact resistance rises because of oxidation, The output current is delivered from a supercapacitor... -
Page 9: Dualground - Both Sides Grounded
2 INTRODUCTION 2.2 DualGround – Both sides grounded With MOM2 it is possible to make measurements according to the DualGround™ method. The most im- portant advantage is improved safety but the method is also easier and saves time. The number of tasks is reduced when the ground cable does not need to be disconnected and reconnected. -
Page 10: Mom2 Overview
3 MOM2 OVERVIEW MOM2 overview 3.1 The instrument 10 11 Bottom view Top view MOM2 ZP-BD03E BD0333FE... - Page 11 3 MOM2 OVERVIEW Current output terminal (-) Function selector Current output terminal (+) 0.1 s Test positions Protective conductor terminal 0.6 s Measurement time with I > I min Display minimum current guaran- ▪ The display offers a combination of analogue arc and a dual digital readout: 0.1 s...
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Page 12: Accessories
Current cable 0.5 m (1.6 ft), Connection plate and sense cables 15 m (49 ft), Ground cable GA-00384 Bluetooth kit Bluetooth headset and dongle for PC XC-06000 Calibration kit BD-90002 Soft carrying case For MOM2, Charger and Cables GD-00620 MOM2 ZP-BD03E BD0333FE... - Page 13 4 FUNCTIONS AND SET UP BD0333FE ZP-BD03E MOM2...
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Page 14: Functions And Set Up
The instrument should be in the OFF position when not in use. Note The MOM2 will go to stand by mode after about 10 minutes of inactivity. To wake up, press Stand-by / Wake up (CLR LOG) button. MOM2 ZP-BD03E... -
Page 15: Bluetooth
Press ▶, "SPC" will be shown. The PC should now find the MOM2. Press "OK. Display will show "o". The MOM2 is now visible in the Bluetooth network and ready to be paired. On the PC, in the "Control Panel" select "Bluetooth Devices". -
Page 16: Clock - Clk
Press the ▶ key to go further and set month, tions for the headset.) day, hour an minute in the same way as Press the OK key on the MOM2. above. When the display shows “Prd” the pairing is Press C key to return. -
Page 17: Minimum Current - I Min
The current measured during the test is shown in the upper row. The value shown toggles between the max and min current during the test. In this case it is the minimum cur- rent showing "> 037 A". BD0333FE ZP-BD03E MOM2... -
Page 18: Data Logger - Log
Each label can store three meas- urements. See also section 5.6 Measurement using the log function. Running numbers mode, 1234 The measurements are numbered in numerical order (1 to 1999) MOM2 ZP-BD03E BD0333FE... -
Page 19: Pass/Fail - P/F
Pass/Fail function. If the measured value exceeds The PC COM position is used for all operations per- the set limit it will result in a notification on the dis- formed from a PC using MOM2 Win. you can: play and by an audio signal ▪... -
Page 20: Audio Signals
Bluetooth headset (optional). The audio signals vary in charged. Use the supplied charger and connect it frequency, Low / High, and composition. to the socket at the bottom of the MOM2. Typical recharge time for fully discharged batteries is 3 hours, Audio signals Description at 25°C (77°F). -
Page 21: Battery Practice
0.1 s measurement position and I > I min. Loosen the two screws that holds the battery lid at the back of MOM2. Important Always replace all batteries at the same time. -
Page 22: Operating Instructions
Important safety regulations. Power supply Prepare testing by charging the batteries se section 4.10 Battery power supply. Note The MOM2 cannot be used for testing during Warning battery charging. See section 5.8 Troubleshooting Pass/Fail indicator LCD display In this case the Pass/Fail is set to 100 μΩ... -
Page 23: Working At Low Temperatures
Recalling test results from the log Working at low temperatures Saved results can be recalled by scrolling to MOM2 can be operated down to -20°C provided that desired label using the ▲ ▼ keys. the batteries keep a temperature over 0°C. When the instrument is in use the batteries will generate heat enough to keep themselves warm. -
Page 24: Measurement With Max. Charge, I=I Max
The MOM2 is ready for a measurement when the lock symbol disappears. Ready for test Press the TEST button on MOM2 or the pull the trigger on the probe. A continuous audio signal tells that the measurement is in progress. -
Page 25: Measurement With Minimum Current Guarantee, I > I Min
Charging When the lock symbol disappears the MOM2 is ready for a measurement. Ready for test Press the TEST button on MOM2 or Trigger on the probe. A continuous audio signal tells that the measurement is in progress. Two short signals tells that the measurement... -
Page 26: Measurement Using P/F - Pass/Fail
(< 90 μΩ). positions. The character ">" to the left of the big digits indicates that Press the TEST button on MOM2 or the pull the P/F value was exceeded. the trigger on the probe. A continuous audio signal tells that the measurement is in progress. -
Page 27: Measurement With User Defined Settings
There are three positions for storing user defined See section 4.6 Data logger – LOG for how to set up. settings. These can only be set via a PC with the MOM2 Win Software, see chapter MOM2 Win. Running numbers mode The measurements are numbered in numerical order 1 to 1999... - Page 28 Note To continue to measure you need to either delete the latest measurement or scroll to a blank label. By using the ◀ ▶ and ▲ ▼ keys you can toggle be- tween the saved test results MOM2 ZP-BD03E BD0333FE...
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Page 29: Measurement Using P/F And I Min
< current limit and > P/F limit. Ready for test Press the TEST button on MOM2 or pull the trigger on the probe. A continuous audio signal tells that the measurement is in progress. -
Page 30: Testing On Circuit Breakers Having A Current Transformer In The Loop
Problem Solution transformer in the loop Headset does Check that it is paired to MOM2 not work Check on MOM2 that Bluetooth is enabled If there is a current transformer (CT) in series with the breaker contact to be tested then it is advisable to make some basic checks. - Page 31 6 APPLICATION EXAMPLES BD0333FE ZP-BD03E MOM2...
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Page 32: Application Examples
(isolator), Attach the test cables with Kelvin probes (2 x make sure that it is closed and grounded at 1.3 m) one with a trigger, to MOM2. both sides before testing. Turn the function selector to desired posi- tion. -
Page 33: Test A Cb Using Dualground
(the opposite side of CB from where the ex- tra ground cable is attached). Hook the MOM2 to your belt or use the strap to hang it around your neck. Mount the 0.1 m plate to the current out... -
Page 34: Mom2 Win
7 MOM2 WIN MOM2 Win 7.1 Introduction 7.2 MOM2 installation MOM2 Win is a Windows® program that communi- Preconditions cates with the MOM2 micro-ohmmeter instrument. ▪ Windows XP / 7 It is used for: ▪ .net Framework 4.0 ▪ Reading measurement data from the instrument and save If the PC has not the .net Framework 4.0 installed it... -
Page 35: Start Mom2 Win
MOM2 instrument. At program startup the SW will try to connect to MOM2 using the same COM port that the last suc- cessful connection used. If there have been no previ- ous MOM2 connections from this computer the SW will scan all available COM ports. - Page 36 When you click the “Synchronize clock PC -> MOM2” Figure 8.4.2 The Connection settings window, searching. button the PC system time is written to the MOM2. This is the easiest way to set the clock in MOM2, see Figure 8.4.3 MOM2...
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Page 37: Read The Measurement Log
7 MOM2 WIN 7.5 Read the measurement Click the "Measurements" button on the Start page or select "Measurements" from the "Tools" menu. Figure 8.5.1 Data dumping dialog. Click on the "Retrieve all data" button to download all measurements stored in the instrument. -
Page 38: Export Data To File
7 MOM2 WIN Figure 8.5.3 Data dumping finished. The columns can be sorted by clicking the headers and arranged by click-hold and drag. Export data to file Delete all data on the instrument Click the "Save to file" button (this button is In the "Measurements"... -
Page 39: User Settings
7 MOM2 WIN 7.6 User settings Click the Program "User" positions" button on the start page or choose Program "User" positions from the "Tools" menu . Figure 8.5.4 Delete all measurements progress. Figure 8.6.1 Program "User" positions Read existing settings Select "User"... -
Page 40: Calibration
Type the value in the U reference column in MOM2 Win Click the "Measure" button next to the field. The value measured by the MOM2 will then be propagated to the "U measured" text field. New calibration factors will automatically be calculated. -
Page 41: Calibration Report
When the resistances over both the shunts have been measured and the result is satis- factory you can save it to the MOM2. Click the"Save to instrument" button. If the result of the tests is not satisfying or you want to start over, click the "Cancel"... -
Page 42: Specifications
8 SPECIFICATIONS Specifications Specifications MOM2 Measurement section Minimum current guar- Selectable 50 A / 100 A Specifications are valid at fully charged batteries and an ambi- antee Valid at resistance ≤2mΩ ent temperature of +25°C, (77°F). Specifications are subject to Pass / Fail Settable from 1 µΩ... - Page 43 BD0333FE ZP-BD03E MOM2...
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Page 44: Index
I>I MIN ............25 CLK..............16 Measurement with user defined settings ..27 Clock.............. 16 MOM2 installation .......... 34 Connector for the battery charger....11 MOM2 Win ............. 34 Connectors for trigger ........11 Current output terminal (-) ......11 OFF ............... - Page 45 ........ 30 Test positions ..........14 To choose I > I min or I = I max ......22 To choose measurement time ....... 22 Trouble shooting ..........30 USER – 1/2/3 ..........14 Wake up ............11 BD0333FE ZP-BD03E MOM2...
- Page 46 INDEX MOM2 ZP-BD03E BD0333FE...
- Page 48 ▪ Insulation Power Factor (C&DF) Test Equipment worldwide. ▪ Insulation Resistance Test Equipment Megger is certified according to ISO 9001 and 14001. ▪ Line Testing Equipment Megger is a registered trademark. ▪ Low Resistance Ohmmeters ▪...
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