User`s Manual MOM2 MOM2 Win
Contents
1. 23 Kelvin Clamp Probe practice 23 SWEET LIE US eine ange 23 Hold present test resUlts an 23 Delete present test result 0 23 Recalling test results from the log 23 Delete results in the log 23 Delete all results in the log 23 5 2 Measurement with max charge l l MAX 24 5 3 Measurement with minimum current guarantee gt Minis een 25 5 4 Measurement using P F pass fail 26 5 5 Measurement with user defined settingS 27 5 6 Measurement using the LOG function 27 Running numbers mode ee ee ee ee 27 Circuit breaker testing Mode 27 5 7 Measurement using P F and min 29 5 0 1IOUDIESNOO NG eses 30 Error MESSAGES oie iss een eie ee is Ee 30 6 Application examples EE OENIER 32 GV Sale EE EE ee et 32 Important regarding all testing 32 6 2 Measurement using Kelvin probes 32 6 3 Test a CB using DualGround 33 6 4 Test a CB by injecting through the ground aD S as EE EE EE Ee Ee 33 DI GEE NO ss EE EE EG LENE 33 8 MOM2 Win EE EE EE 34 8 HI EOOMEND e a ee 34 8 2 MOM2 Installationen sees ee Ee ee ESE 34 PICO ie AE EE EE OE N re 34 Si de MEE ee ee OE eres 34 Select landUade se be ese ee2. Important regulations Warning 1 Before measuring resistance in circuit breakers or disconnecting switches isolators always check to see that the object being tested is closed and grounded at both sides 2 lf there are current transformers in MOM2 s test circuit follow the normal procedure to demagnetize current transformer cores after completing your measurements 3 Never open a circuit breaker while MOM2 is connected to it 4 Connection points for current cables can be come hot during current generation 5 High current on output terminals Do not attempt to service the instrument your self If you attempt to service the instrument yourself the warranty is no longer valid Do not use any accessories that are not in tended for use together with the instrument Use a damp cloth for cleaning Do not use liquid cleaners or aerosol cleaners Important 1 The instrument is intended for use in industrial environment It generates uses and can radi ate radio frequency energy and if not installed and used in accordance with these instructions it may cause interference to other devices in the vicinity If this equipment does cause interference with other devices which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures m Reorient or relocate the receiving device m Increase the separation betwee
3. requirement for non electromagnetic interfer ence in the environment The PC COM position is always enabled as it overrides the disable setting Set up Bluetooth 1 Select SET on the MOM2 2 Press SPC will be shown 3 Press OK Display will show o The MOM2 is now visible in the Bluetooth network and ready to be paired 4 On the PC in the Control Panel select Bluetooth Devices 5 Click Add A FUNCTIONS AND SET UP Bluetooth Devices Devices Options COM Ports Hardware Audio devices ER Megger MOM Passkey enabled Remove Properties Apply 6 Check the box and click Next Add Bluetooth Device Wizard Welcome to the Add Bluetooth Device Wizard Before proceeding refer to the Bluetooth section of the device documentation Then set up your device so that your computer can find it Turn it on Make it discoverable visible Give it a name optional Press the button on the bottom of the device keyboards and mice only Y Add only Bluetooth devices that you trust 7 The PC should now find the MOM2 ZP BDO3E MOM2 WE A FUNCTIONS AND SET UP El Bluctooth Device Wizard is enabled EnA Select the Bluetooth device that you want to add 3 Press rig ht arrow key twice The display shows SHS 4 Set the headset in pair mode See the instruc Already connected tions for the headset
4. 5 Press the OK key on the MOM2 6 When the display shows Prd the pairing is ready i If vou don t see the device that you want to add make sure that it is 4 tumed on Follow the setup instructions that came with the device H OW to sta rt th e h ea d set and then click Search Again g 1 See the instructions for the headset 8 Check and click Next 9 Select the second option see below enter 0000 and click Next Add Bluetooth Device Wizard Do you need a passkey to add your device To answer this question refer to the Bluetooth section of the documentation that came with your device If the documentation specifies a passkey use that one Choose a passkey for me Use the passkey found in the documentation 0004 Let me choose my own passkey Don t use a passkey n You should always use a passkey unless your device does not support one We recommend using a passkey that is 8 to 16 digits long The longer the passkey the more secure it will be Add Bluetooth Device Wizard Completing the Add Bluetooth Device Wizard The Bluetooth device was successfully connected to your computer Your computer and the device can communicate whenever they are near each other These are the COM serial ports assigned to your device Outgoing COM por COM16 Incoming COM port COM17 To close this wizard click Finish 10 Display shows Prd and set up is complete Note The procedure to pair
5. A a OE L rm La E BER Resistance Pass faillimit Measurement time ms 28 u 30 pa 100 BE ya 50 HE 100 3000 100 100 100 100 100 100 100 100 100 100 100 1 100 100 100 100 100 100 100 100 100 100 100 100 en 0 0 1C1 2 2011 04 08 08 02 51 1C1 3 2011 04 08 08 02 59 0 0 E 0 Pa med 2C1 1 2011 04 08 08 04 03 48 ZB1 1 2011 04 08 08 04 16 A1 1 2011 04 08 08 04 29 1C1 1 2011 04 08 08 02 43 1C2 1 2011 04 08 08 03 15 1C2 2 2011 04 08 08 03 73 1C2 3 2011 04 08 08 03 32 1 am ENE EER EG TER 8 a ENG z ET RE EES MEE ER NES era ers es ea es ers ER ies ies es ER ies ies ers era aa OT 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 1 Click the Save to file button this button is not enabled if the list is empty A Save as window will be opened 2 Type a file name and click the Save button to export the data to file A The default file type is csv which will save the data as an ASCII file with comma separat ed values suited for import to e g Microsoft Excel Note The value separator is dependent of the re gional setting in Windows a semicolon when comma is used for decimal separator and comma otherwise The format of the exported data is not the same as what is seen in the measurements table There is no mixing of val
6. Sweden www megger com Contents 1 Safety EE EE EE EN 6 Symbols on the instrument 6 SALES ICON seen 6 2 Introduction 2 1 Basic technical description 8 AE EE ee ee 8 2 2 DualGround Both sides grounded 9 3 MOM2 overview EE N 10 SMS eine SA OE N OE EE NG 10 3 2 ACCESSOT E te ee e DE Ee 12 3 3 Optional accesSOriES ee ee EE DE EE SE 12 4 Functions and set up EE EE 14 Med ME OE N N 14 Internal software version 14 42 TEST DES ONE rear 14 4 3 Bluetooth J 15 SET ee ee ee 15 idea Oe Et GN EE EE OE EE EI N 17 SER ee ee 17 4 5 Minimum current MIN nen 18 SEA ID EE ee 18 4 6 Data logger LOG ee ee ee ee ee 18 SEL G ET oe oe ee Ee ee ed 18 4 7 Pass Fail PIE ses ee ee ie se ee De 19 EA EE N EE EE EE N Ee 19 4 8 PC communication PC COM nn 20 PE COM RE EE EE 20 ARE AU SEIT EO OE EO EE ERNE 20 4 10 Battery power supply ee ee ee ee ee ee 21 sie io ARE EE EE EE ET 21 Replacing the batteries ee ee ee 21 Battery practice een ee 21 5 Operating instructions ER RE EE Ed 22 5 1 General instructions ee ee ee ee ee 22 Important regarding all testing 22 Power supply sesse skik see KERE EER SERE EE NNE 22 ED ABIE ee EE E Ee 22 To choose measurement time 2 22 To choose Imin or I 1Mmax 22 Working at low temperatures
7. Temperature limits exceeded too high or too low before charging Charging will start when temperature is within the limits Disconnect the charger and check the batteries Check batteries and charger cables Fault state Wrong battery type faulty battery Battery fault missing or other fault Replacing the batteries 1 Loosen the two screws that holds the battery plate at the back of MOM2 see figure below ZP BDO3E A FUNCTIONS AND SET UP It is recommended to use the same type of batteries AA HR6 2700 mAh NIMH as the original ones It is possible to use standard hon rechargeable alkaline cells but then only for test using the 0 1 s measurement position and I gt I min Note 05 j Remove lid to replace batteries Only use identical batteries i Retirer le couvercle pour _ remplacer les piles N utiliser que des piles identiques _ Deckel abnehmen die Batterien ersetzen Verwenden Sie nur identische Batterien Retire la tapa para reemplazar las baterias S lo use bater as id nticas Togliere il coperchio per sostituire le batterie Usare solo batterie identiche DC IN 12 24 V 2 A max PATENT PENDING Loosen the two screws that holds the battery lid at the back of MOM2 Important Always replace all batteries at the same time Do not mix old and new batteries Do not mix types or brands Battery practice To extend the battery life cycle time it is a g
8. a single battery charge Note The shortest measurement time 0 1 s is not suitable in environments with a frequency of 16 2 3 HZ Tip Start making three tests with the shortest measurement time to figure out If the results vary If they do not differ significantly use 0 1 s for the tests To choose I gt I min or I max If you want maximum current for your test choose I 1max In this position the capacitor will be charged to its maximum and therefore requires much energy trom the batteries If lower current is sufficient for the measurement it is advisable to use the I gt I min position In the ZP BDO3E SET Imin position you select the minimum current to be 50 A or 100 A Min current guarantee Max current I gt I min I I max Valid for test objects lt 2 mQ For all test objects 0 1 Q Capacitor is fully charged Will push as much current as possible through the test object for set time Current is deter mined as I 2 5 V test object R 0 01 OJA Allows for shorter time be Requires longer capacitor tween tests recharge times Working at low temperatures MOM2 can be operated down to 20 C provided that the batteries keep a temperature over 0 C When the instrument is in use the batteries will generate heat enough to keep themselves warm Capacitor only charged to sufficient level to generate selected minimum current for set time Saves instrument battery Kelvin Clamp Probe practice Im
9. can be opened at any time during the calibration However a complete report with a calibration time can only be made when the calibration is completed and saved to the MOM2 2 The calibration report can be printed either by pressing ctrl P or clicking on the Print report button ZP BDO3E MOM2 HEN U first range U second range U third range R first shunt R second shunt 2V 200 mV 10 1 mV 998 uQ 10 me Deviation 0 014 0 013 0 53 0 2 0 13 Measurements with the new calibration factors Calibration time No calibration factors are written to the instrument Measured value U first range U second range U third range R first shunt R second shunt 200 mV 10 mV 1 mQ 10 mQ Deviation 0 011 0 013 0 29 0 1 0 13 Print report Figure 8 7 5 Calibration report 9 SPECIFICATIONS Specifications MOM2 Specifications are valid at fully charged batteries and an ambi ent temperature of 25 C 77 F Specifications are subject to change without notice Environment Application field For use in high voltage substations and industrial environments Temperature Operation 20 C to 50 C 4 F to 122 F Storage 40 C to 70 C 40 F to 158 F Relative humidity RH 5 95 non condensing Pollution degree 2 Shock IEC 60068 2 27 Vibration IEC 60068 2 6 Transport ISTA 2A Flammability class VO Battery operation temperature 0 C to 50 32 F to 1
10. min current value The maximum test current was 82 A and the test current was below 100 A D If both the P F limit and the current limit are contravened the big digits will toggle be tween resistance value lt current limit and gt P F limit ZP BDO3E MOM2 Wi 5 OPERATING INSTRUCTIONS 5 8 Trouble shooting Problem solution Headset does Check that it is paired to MOM2 not work Check on MOM2 that Bluetooth is enabled Error messages OL Bad connection Check cables and connec resistance out tions of measurement range Warning sign The batteries Charge the batteries on display and cannot charge Note It might be possible the battery the capacitor to proceed and make some charge indica tests if it is realistic to select tor blinks a test position that requires less power shorter measur ing time Warning sign A thermal Turn off the MOM2 and let it on display protection has cool down tripped IE MOM2 ZP BDO3E 5 OPERATING INSTRUCTIONS ZP BDO3E MOM2 ex 6 APPLICATION EXAMPLES 6 Application examples 6 1 Safety 6 2 Measurement using Kelvin probes An example how to perform testing using the two Kelvin probes This example describes the perfor mance if you only want to know if the test object pass a preset value and you do not need to store the test results 1 Select LOG function OFF and set P F value see section 4 6 and 4 7 Important regarding all testing A
11. settings in the SET options Select P F and enter desired limit value Select I min 50 or 100 A 4 Attach the test cables 5 Turn the function selector to desired I gt Imin position The instrument indicates that it is charging the capacitor by a repeated sound and on the display shows alternating CAP and CHG as well as the padlock symbol Charging 6 When the lock symbol disappears the MOM2 is ready for a measurement 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 When the measurement is complete there willbe a pass or a fail signal A If the resistance value is below the P F limit and the current value is over the set min 5 OPERATING INSTRUCTIONS current limit the result will be shown on the display with big digits e g as below The small digits toggle between max and min current value and the P F limit The minimum test current was 80 A and resistance is 102 MO B If the resistance value is over the P F limit there is the fail signal and the character is displayed to the left of the set P F value The small digits show the set P F value lt 90 uo The character gt to the left of the big digits indicates that the P F value was exceeded C If the current value is below the set min cur rent limit there is the fail signal and the lt character is displayed to the left of the set
12. 06000 BD 90002 Calibration kit vAN MOM2 ZP BDO3E 3 MOM2 OVERVIEW ZP BDO3E MOM2 BE 4 FUNCTIONS AND SET UP A Functions and set up 4 1 General Internal software version When turning the function selector from OFF to any position the display will shortly show a number e g 008 and then during five seconds the internal soft ware version e g 01C revision RO1C I gt min max OFF 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 4 2 Test positions 1 1 min Minimum current is set in position SET I min Generation measurement time 0 1 s 0 6 or 3 s The current is only limited by the total impedance of the circuit Generation measurement time 0 1 s 0 6 or 3 s USER 1 2 3 User defined settings as generation time min pass fail and log Note The user defined settings can only be set via MOM2 Win from a PC CE MOM2 ZP BDO3E 4 3 Bluetooth Q SET Display abbreviations SEt Set SPC Set up PC SHS Set up headset Prd Paired E d Enable Disable headset EnA Enabled headset dls Disabled headset O Processing ErA Erase all addresses Enable Disable Bluetooth 1 Use the lt gt keys to find E d 2 Press OK to toggle between EnA Enabled and diS Disabled Note Do not use the PC COM mode if there is a
13. 22 F Battery charging temperature 10 C to 40 50 F to 104 F CE marking EMC 2004 108 EC LVD 2006 95 EC General Battery power Five AA HR6 2700 mAh NiMH cells Recharge time 212i Typical recharge time at 3h 25 C Battery charger Mains voltage 100 250 V AC 50 60 Hz Power consumption 60 W Protection Against wrong battery type low high temperature Real time clock battery life gt 10 years Audible feedback Different buzzer sounds User presets 3 Field calibration Yes Encapsulation IP54 Dimensions excl binding 217 H x 92 B x 72 D mm posts 85Hx3 6Bx2 8Din Weight 1 0 kg 2 2 Ibs instrument only 5 0 kg 11 Ibs with accessories and carrying case Measurement section Minimum current guar Selectable 50 A 100 A antee Valid at resistance lt 2mO Pass Fail Settable from 1 uO to 1999 mQ Number of measurements typ 2200 at min 50 A and 0 15 on fully charged batteries typ 800 at Imin 100A and 0 1 s Interference suppression Yes Range 0 1000 MO Range selection Auto Resolution 0 999 un 1 yO 1 0 9 99 MQ 0 01 MO 10 0 99 9 MQ 0 1 MO 100 1000 mQ 1 mO Inaccuracy 0 1999 uQ 1 of reading 1 digit 2 1000 mQ 2 of reading 1 digit Outputs Range gt 100 ADC R lt 2 mQ Output voltage max Generation duration 2 5VDC Selectable 0 15 0 65 35 Recovery time at min set to 100 A and load 100 pO Generation time Max Typ 0 15 10s 8s 0 65 20 s 16 s 2S 130 s 100
14. 410 200 mV 410 10 mV 310 Figure 8 7 2 Voltmeter calibration Ammeter calibration Note The voltmeter n the instrument must be calibrated before it is possible to calibrate the Ammeter The ammeter is calibrated in an indirectly manner by measuring the resistance over two predefined shunts and compare with the reference values The resistance is measured with a capacitor voltage suitable for the voltage and current ranges 1 Connect the current cables from the MOM2 to the reference shunt 2 Connect separate sense leads from the MOM2 sense input to the sense outputs of the reference shunt 3 Enter the value of the shunt in the R refer ence input field The Measure button will be enabled if the resistance is within the limits 4 Click the Measure button next to the field When the measurement is started a progress window is shown see fig below The two uppermost fields show the measured capaci tor voltage and the target voltage Wd Calibration Resistance measurement in progress Capacitor voltage 2 2 V Target voltage 1 98 V Max voltage U range 270 Min voltage Max current 5 I range Min current Target current Cancel Figure 8 7 3 Resistance measurement progress window Lom MOM2 ZP BDO3E 5 The measurement goes on and when it is finished the R Measured field is filled with the meas ured resistance value and a new calibration factor for this measurement range is calc
15. 99 N MOM2 ZP BDO3E Measurement is automatically stored provided that the memory is not full Set up 1 Select SET LOG Present setting is displayed 2 Press and hold OK key until characters start to blink under the SEL letters 3 Use the A W keys to select mode A Press OK key 4 7 Pass Fail P F In the P F position you can enable and set the limit for the Pass Fail function If the measured value exceeds the set limit it will result in a notification on the dis play and by an audio signal SET P F Display abbreviations SEL Select OFF OFF Set up 1 Select SET P F Present setting is displayed 2 Press and hold OK key until character lt or oFF start to blink 3 Select OFF or a value using the A YW keys 4 Use the keys to select the digit to change it will blink 5 Use the keys A W keys to set the desired value 6 Press OK key To cancel press C key or turn the function selector to another position A FUNCTIONS AND SET UP 4 8 PC communication PC COM The PC COM position is used for all operations per formed from a PC using MOM2 Win You can m Dump measurement data from the MOM2 m Delete all measurements in the data log m Program User positions m Set MOM2 clock m Calibrate PC COM Display abbreviations EN Remote Set up The following is needed m A PC with MOM2 Win installed See chapter 8MOM2 Win m A PC connected via Bluetooth See section Bluet
16. B 3 Disconnect the extra ground cable from the 0 1 m plate on plus terminal 4 Disconnect the 0 5 m current cable from ground 5 Disconnect the ground cable from MOM2 ZP BDO3E MOM2 BEE 8 MOM2 WIN 8 1 Introduction MOM2 Win is aWindows program that communi cates with the MOM2 microhmmeter instrument It is used for m Reading measurement data from the instrument and save it to file m Configuring the instrument m Calibrating the instrument 8 2 MOM2 installation Preconditions m Windows XP 7 m net Framework 4 0 If the PC has not the net Framework 4 0 installed it will automatically be installed provided that the PC is connected to internet m USB Bluetooth dongle The USB Bluetooth dongle must be installed see the installation instructions supplied with the dongle Setup 1 Insert the MOM2 Win CD into the CD drive The installation will start automatically If not select and run the file Setup exe to install the program The program will be installed in the folder C Program Files Programma Mom2 Win with program short cuts on the desktop and in the Start gt All programs gt Programma folder Select language 1 Under Settings menu select Language All texts in all open windows will be updated with the selected language If the translation is missing for some texts the default language English will be used Note The language selection does not change the time format o
17. MOM2 MOM2 Win Microhmmeter User s Manual ZP BDO3E MOM2 MOM2 Win Microhmmeter User s Manual NOTICE OF COPYRIGHT amp PROPRIETARY RIGHTS 2011 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 However the information contained in this manual is subject to change without notice and does not represent acommitment on the part of Megger Sweden AB Any attached hardware schematics and technical descriptions or software listings that disclose source code are for informational purposes only Reproduction in whole or in part to create working hardware or software for other than Megger Sweden AB products is strictly prohibited except as permitted by written license agreement with Megger Sweden AB TRADEMARK NOTICES Megger and Programma are trademarks registered in the U S and other countries All other brand and product names mentioned in this document are trademarks or registered trademarks of their respective companies Megger Sweden AB is certified according to ISO 9001 and 14001 Megger Sweden AB Eldarv gen 4 T 46 8510 195 00 Box 2970 F 46 8 510 195 95 SE 187 29 T BY seinfo megger com C
18. Read and comply with the safety instructions Always comply with local safety regulations Important Note fyou are measuring resistance in a circuit breaker or disconnecting switch isolator 2 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 3 Turn the function selector to desired posi tion 4 Hook the instrument to your belt or use the strap 5 Press and hold the two Kelvin probes to the test object and pull the trigger If the value is outside the limits there is a sound telling the result was fail The measurement value remains until an other measurement is performed or until the instrument is switched off Measurement on a test object er MOM2 ZP BDO3E 6 APPLICATION EXAMPLES 6 3 Test a CB using 6 4 Test a CB by injecting DualGround through the ground cables You can perform testing with both sides grounded 1 The circuit breaker CB shall be disconnect However the measurement accuracy will be some ed closed and grounded on both sides what lower with both sides grounded depending on 2 Connect the MOM2 to ground the ratio of the currents circuit breaker grounding cables see section 2 2 This example shows a test on a HV CB using a man lift 3 Attach an extra ground cable not included with at least 95 mm cross section area to one side ofthe CB 4 Connect the 0 5 m curren
19. and assign com port varies depending on the equipment How to pair a headset 1 Select SET amp on the MOM2 2 Use the lt gt keys to find out that Bluetooth 3 MOM2 ZP BDO3E 4 4 Clock CLK SET CLK There are three functions in this position A Set date and time B Set volume for the internal buzzer C Discharge the MOM2 internal capacitor used for service only Display abbreviations CLC Clock UOL Volume dIS Discharge used for service only yy Year non Month dd Day HH Hour nin Minute Date and time 1 Select SET CLC 2 Press and hold OK key until digits start to blink under the yy letters 3 Set year using the A W keys A Press OK key 5 Press the key to go further and set month day hour an minute in the same way as above 6 Press C key to return Volume for buzzer 1 Select SET CLC 2 Press gt key UOL is shown 3 Press and hold OK key until digit start to 4 FUNCTIONS AND SET UP blink 4 Set level 1 to 5 using the A keys 5 Press OK key 6 Press gt or 4 to return ZP BDO3E MOM 2 WE 4 FUNCTIONS AND SET UP 4 5 Minimum current min 4 6 Data logger LOG The data memory can store totally 190 measurements SET I min and this capacity is shared by the two log modes Display abbreviations SET LOG SEL Select Display abbreviations description Set up N IIS SEL Select 1 Select SET I min Present setting is displayed OFF OFF 2 Press
20. and by Wake UP ee ee ee ee ee ee ee ee 11 Symbols on the instrument ee ee ee ee 6 T Test a CB by injecting through the ground cables 33 Test a CB using DualGround 33 TEST LO ee 11 Test POSITIONS een aan 14 To choose l gt lmin or la Nee 22 To choose measurement time eenneeee 22 lelie SOO UIA ee AE KA ER OE N 30 U ds ee RE EE OE EE N N 14 V W VAR ee een 11 X Y Z INDEX ZP BDO3E MOM2 HEE INDEX GN MOM2 ZP BDO3E INDEX ZP BDO3E MOM2 Wie Your One Stop Source for all your electrical test equipment needs m Battery Test Equipment m Cable Fault Locating Equipment m Circuit Breaker Test Equipment m Data Communications Test Equipment m Fiber Optic Test Equipment m Ground Resistance Test Equipment m Insulation Power Factor C amp DF Test Equipment m Insulation Resistance Test Equipment m Line Testing Equipment m Low Resistance Ohmmeters m Motor amp Phase Rotation Test Equipment m Multimeters m Oil Test Equipment m Portable Appliance amp Tool Testers m Power Quality Instruments m Recloser Test Equipment m Relay Test Equipment m 11 Network Test Equipment m Tachometers amp Speed Measuring Instruments m TDR Test Equipment m Transformer Test Equipment m Transmission Impairment Test Equipment m Watthour Meter Test Equipment m STATES Terminal Blocks amp Test Switches m Professional Hands On Tec
21. and hold OK key until digits start to TAT Label for Breaker Phase Interrupter blink under the SEL letters 1234 Running numbers 3 Select value 50 or 100 using the A V keys LOG modes OFF A Press OK key to confirm To cancel press C key ortum the function When the log is OFF only the latest value is stored and only selector to another position until the performance of a following measurement which overwrites the previous one Result after a measurement Circuit breaker testing mode 1A1 If the chosen value is not reached during a measure ment it will result in a notification on the display and by an audio signal 4 This mode is primarily designed for measurement on circuit breakers The three characters 1A1 are supposed to indi cate Breaker Phase Interrupter Picture shows an example after a measurement The I min M nn er easurement is automatically stored provided that limit 50 A has not been achieved indicated by the lt y p Esser there are less than three measurements stored on the The current measured during the test is shown in the upper selected object label Each label can store three meas row The value shown toggles between the max and min urements See also section 5 6 Measurement using current during the test In this case it is the minimum cur the log function rent showing gt 037 A Running numbers mode 1234 The measurements are numbered in numerical order 1 to 19
22. aracter is displayed to the left of the set P F value r MOM 2 ZP BDO3E 5 5 Measurement with user defined settings There are three positions for storing user defined settings These can only be set via a PC with the MOM2 Win Software see chapter MOM2 Win 5 OPERATING INSTRUCTIONS 5 6 Measurement using the LOG function See section 4 6 Data logger LOG for how to set up Running numbers mode The measurements are numbered in numerical order 1 to 1999 Measurement is automatically stored provided that the memory is not full Running numbers 1999 FRA NN nn u I The display before first measurement The display after measurements By using the d gt and A W keys you can scroll be tween the saved test results Note You can only scroll through the measurements in the selected LOG mode Circuit breaker testing mode Each label e g 1A1 in the memory for the circuit breaker measurement can contain three measure ments These are indicated by commas see picture below The label is built of three elements m Two digit indication of circuit breaker 1 to 19 m A letter for phase A B C m Digit for interrupter 1 to 9 ZP BDO3E MOM2 Br 5 OPERATING INSTRUCTIONS 4 5 6 1 The first measurement on the present label shown by a comma 2 The second measurement in the present memory cell shown by a comma 3 The third measurement in the present memory cell shown by a comma 4 Digit f
23. ck PC gt 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 IE MOM2 ZP BDO3E 8 5 Read the measurement log 1 Click the Measurements button on the Start page or select Measurements from the Tools menu T MOM2 Win Seles File Tools Settings Help Return to start page Measurements MOM2 S M Retrieve all data Me ew num nu ee Delete all data Figure 8 5 1 Data dumping dialog 2 Click on the Retrieve all data button to download all measurements stored in the instrument A window will pop up showing the progress of the download At any time the data dump can be stopped by clicking the Cancel button In that case the data window will be closed M MOM2 Win Measurements Record Label Timestamp Max current Min current Min current limit Resistance Pass fail limit Measurement time ms Downloading data Figure 8 5 2 Data dumping progress 8 MOM2 WIN ZP BDO3E MOM2 Rey 8 MOM2 WIN IE MOM2 Win Measurements Record Label Timestamp 19 2011 04 08 08 21 36 EEUE RENEE aonr oroe 075452 ho m da co j FA H PJ i E 1A1 1 2011 04 08 08 00 34 1A2 1 2011 04 08 08 01 10 1A2 2 2011 04 08 08 01 18 ERGE 11 04 08 08 02 01 S S oo oa in kb bo Lu eo ta Wo al ee RA Max current 140 A 243 A 142
24. d for 5 s 3 MOM2 OVERVIEW Function selector 0 15 Test positions Measurement time with max charge Bluetooth pair units CLK m Set date and time m Set volume for the internal buzzer m Discharge the MOM2 internal capacitor Minimum current guaran tee setting Data log settings Pass Fail settings PC communication dump data to PC A Test positions 2 Stored settings Set from Input for sensing voltage Connector for the negative test lead Input for sensing voltage Connector for trigger Battery lid Connector for the battery charger Battery charging indicator ZP BDO3E MOM2 WE 3 MOM2 OVERVIEW 3 2 Accessories m Test cables with Kelvin probes one with trigger or Test cables with Kelvin clamps m Iransport case m Charger m Rubber holster m Carrying strap m Belt clip m MOM2 Win 3 3 Optional accessories Test cables with Kelvin probes Test cables with Kelvin damps Cablekit5 m Current cable 0 5 m 1 6 ft Connection plate and Cable kit 10 m Current cable 0 5 m 1 6 ft Connection plate and Cable kit 15 m Current cable 0 5 m 1 6 ft Connection plate and Bluetooth kit Bluetooth headset and dongle for PC 2 x 1 3 4 ft m one with trigger GA 90000 1 3 m 4 ft red 3 m 10 ft black GA 90001 GA 00380 sense cables 5 m 16 ft Ground cable GA 00382 sense cables 10 m 33 ft Ground cable GA 00384 sense cables 15 m 49 ft Ground cable XC
25. e ee ee eeeees 23 Biel EO N E 18 Input for sensing voltage ee nennen 11 Input for sensing voltage nen 11 J K Kelvin Clamp Probe practice ee ee neces 23 ke Vin Ses Es Ge A ee be es 8 ME DE EE N N OE EN 11 L EARE 6 AE EO N Oe 22 ED C ET ope ae EE Oo ERKEN 18 low temperature ee ee ee ee ee ee ee ee ee 23 M Measurement on using Kelvin probes 32 Measurement ME ee ee ee ee ek ee 22 Measurement using P F ees ee see ee ee ee ek ee 26 Measurement using P F and min 29 Measurement using the LOG function 27 Measurement with max charge I MAX 24 Measurement with minimum current guarantee Il ME ON sce ER N Ne 25 Measurement with user defined settingsS 27 MOM2 installation RR EE AO N rnnee 34 Mile Pd EN OE EE N EN 34 N O EE EE EE sade ONE OE EEN 14 Operating INSUEIONE asked Re EE ES 22 Optional accesSOFI S ee ee ee ee ee 12 es GW EA ER EN EE N ER N 10 P PS EE EER Ee EE Ge tesa 19 PE TOM EE een 20 PE COMMUNICA O ss oi EE n ee ee 20 DE EE E N EE NE NE N 19 Protective conductor terminal ee ee ee ee 11 Q R Recalling test results ee ee ee ee ee ee ees 23 Replacing batteries ee ee ee ee ee ee ee 21 S ele EE EE OE edie 6 Safety INS rUCTONS n se EDE RE Ee EE EE 6 am MOM2 ZP BDO3E Save test U ge 23 asiel 1 Oe eee NE EE WEHR ene eer 14 See NEGE eN ee 42 St
26. e lock symbol disappears Ready for test 7 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 Two short signals tells that the measurement is complete 8 The result is shown on the display see figures below Over the resistance value 100 Q toggles LE MOM ZP BDO3E 5 3 Measurement with minimum current guarantee I gt I min 1 Read the section 5 1 General instructions 2 If applicable connect the ground cable pro tective earth 3 Make the desired settings in the SET options Select min to 50 or 100 A in this example set to 100 A In this example LOG and P F are disabled set to OFF 4 Attach the test cables 5 Turn the function selector to desired I gt Imin position The instrument indicates that it is charging the capacitor by a repeated sound and on the display shows alternating CAP and CHG as well as the padlock symbol Charging 6 When the lock symbol disappears the MOM2 is ready for a measurement Ready for test 7 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 is complete 5 OPERATING INSTRUCTIONS A If the current value is over the set min current limit the result will be shown on the display with big digits The small digits toggle between max and min current va
27. hnical and m Safety Training Programs SWEDEN Megger Sweden AB Eldarv gen 4 Box 2970 SE 187 29 T BY T 46 8 510 195 00 F 46 8 510 195 95 E seinfo megger com UK Archcliffe Road Dover CT17 9EN England T 44 0 1304 502101 F 44 0 1304 207342 E UKsales megger com Other Technical Sales Offices Dallas USA Norristown USA Toronto CANADA Trappes FRANCE Oberursel GERMANY Johannesburg SOUTH AFRICA Kingdom of BAHRAIN Mumbai INDIA Chonburi THAILAND Sydney AUSTRALIA Megger is a world leading manufacturer and supplier of test and measurement instruments used within the electric power building wiring and telecommunication industries With research engineering and manufacturing facilities in the USA UK and Sweden combined with sales and technical support in most countries Megger is uniquely placed to meet the needs of its customers worldwide For more information about Megger and its diversified line of test and measurement instruments www megger com Megger is certified according to ISO 9001 and 14001 Megger is a registered trademark e Q M INOD Y4 DDSI MMM EJ C Subject to change without notice Printed matter No ZP BDO3E Doc BDO333AE V01 2011
28. lue Pictures shows that the test current was below 219 A and over 205 A B If the current value is below the set min cur rent limit there is the fail signal and the lt character is displayed to the left of the set min current value Picture shows that the test current was below 100 A ZP BDO3E MOM2 Wi 5 OPERATING INSTRUCTIONS 5 4 Measurement using P F pass fail 1 Make the desired settings in the SET options Select P F and enter desired limit value In this example LOG is set to OFF 2 Turn the function selector to one of the test positions The small digits show the set P F value lt 90 uo The character gt to the left of the big digits indicates that 3 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 Another signal tells that the measurement is complete pass or fail A If the resistance value is below the P F limit The result will be shown on the display with big digits KE ad The minimum current was 80 A and the resistance value is The small digits toggle between the P F limit 102 un and the max min current values Here P F limit was set to 150 uQ and the measured resist ance value is 100 uQ Max current during test was 219 A Min current during test was 205 A B If the resistance value is over the P F limit there is the fail signal and the gt ch
29. n the equipments m Connect the equipment into an outlet on a circuit different from that to which the other device s is connected m Consult the manufacturer or field service technician for help Never leave the MOM2 unattended while it is turned on It is not possible to use the MOM2 for testing during battery charging Refer all servicing to Megger authorized per sonnel If you need to return the instrument please use either the original crate or one of equiva lent strength BE MOM ZP BDO3E 1 SAFETY ZP BDO3E MOM2 WE 2 INTRODUCTION Introduction The MOM2 is designed to measure the resistance of circuit breaker contacts bus bar joints contact ele ments in bus bars and other high current links When contact resistance rises because of oxidation loosened or improperly tightened threaded joints temperatures rise abnormally at the points of contact This abnormal heating reduces conductivity thereby accelerating the rise in temperature and this often leads to serious trouble The MOM2 microhmmeter can be used to detect such problems early so that they can be remedied long before trouble starts Checking contact resistance at regular intervals provides a clear indication of the state of your system 2 1 Basic technical description The output current is delivered from a supercapacitor which is charged from the built in rechargeable bat teries Kelvin test The MOM2 uses Kelvin probes or clamp
30. od practice to recondition the batteries in a separate charger that has recondition options like refresh discharge It is a good idea to condition the batteries once in about 6 months or after around 12 regular charge cycles to get the most out of them MOM2 PA 5 OPERATING INSTRUCTIONS 5 Operating instructions 5 1 General instructions Important regarding all testing A Important Read and comply with the safety instructions Always comply with local 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 battery charging LCD display The display can be backlighted by pressing the key 3 It is switched off automatically after 20 seconds 1 Analogue arc Indicates level of the capacitor charge 2 Measurement label In this case the instrument is set in Running numbers mode SET LOG 3 Measurement result 4 Battery charge indicator MOM2 5 Warning See section 5 8 Troubleshooting 6 Pass Fail indicator In this case the Pass Fail is set to 100 uQ 7 Padlock symbol The lock symbol is shown when the capacitor is charged prior to a test and when you lock a test result To choose measurement time In an environment without electrical interference it is wise to choose the shortest measurement time which means that you can get the largest number of meas urements on
31. ooth set up Fi MOM 4 9 Audio signals The MOM2 emits different sounds to give an audible information confirmation of an event action The sound is emitted from a built in buzzer and from the Bluetooth headset optional The audio signals vary in frequency Low High and composition Audio signals Description The MOM2 is charging the capacitor and is not ready for measurement Battery low During capacitor charge Fail signal Measurement complete Fail Label full Stand by When pressing Test Trigger while lock symbol is shown Delete confirmed When press and hold the Test Trigger Note Only in LOG mode When pressing Test Trigger Note Only in LOG mode Release When pressing Test Trigger Note Only in LOG mode m Stor Hine FE ooroo Im erosie ENE ENE lewes I ZP BDO3E 4 10 Battery power supply Charging Before using the MOM2 the batteries should be charged Use the supplied charger and connect it to the socket at the bottom of the MOM2 Typical recharge time for fully discharged batteries is 3 hours at 25 C 77 F Tip Place the MOM2 upside down to get bet ter the cooling of the batteries Important MOM2 cannot be used for testing during charging LED Description Clarification indicator Remedy Fully charged Yellow Charging Green Red Temperature limits Charging will restart Yellow Green exceeded during the charging when temperature has decreased
32. or the circuit breaker Letter for the phase 6 Digit for the interrupter The display before measurement TT AN SN 7 TAT The display before first measurement one comma EE m UL May iD by I The display before second measurement two commas NN RW MT YK The display before third measurement three commas The display after measurements When three measurements have been done and saved to a label e g 1A1 the lock sign is shown Note To continue to measure you need to either delete the latest measurement or scroll to a blank label By using the d gt and A V keys you can toggle be tween the saved test results 1111111177 RS TT FT I L I The display shows 3 for the third measurement for the specific label The arrow sign to the left only represents the omitted characters to the left of the digit 3 To view all measurements stored on the same label 1 Press the A W keys until an arrow sign is shown to the left 2 Scroll between measurements 1 2 and 3 by using the 4 P gt keys Example Three measurements on one label are shown as e g 1A1 1 1A1 2 1A1 3 Note You can only scroll through the measurements in the selected LOG mode ER MOM ZP BDO3E 5 7 Measurement using P F and min In this example LOG is set to OFF 1 Read the section 5 1 General instructions 2 If applicable connect the ground cable pro tective earth 3 Make the desired
33. ot earthed grounded N in JA NS I I S i to l Induced Induced current 4 4 current N Test i equipment l Protective eart l l cable Grounding Grounding ik di Station earth ground da With both sides grounded the induced current will not pass through the test instrument 2 INTRODUCTION ZP BDO3E MOM2 WE 3 MOM2 OVERVIEW 3 MOM2 overview 3 1 The instrument Top view Bottom view 0 MOM2 ZP BDO3E 1 Current output terminal 2 Current output terminal 3 Protective conductor terminal 4 Display m The display offers a combination of analogue arc and a dual digital readout m Analogue arc Shows the capacitor charge m Dual digital display Large main digital readout for good visibility of all main measurement results Second digital display for additional data 5 Keys Keys for navigation and to make settings in the display Left right is used to navigate between characters digits Up down is used to change each character digit Press and hold to enable edit of pa rameters select and confirm param eters Press shortly to confirm Backlight Automatic switch off after 20 s Clear Cancel 6 TEST button When the function selector is in any of the po sitions lin maX or USER measure ment is performed by pressing the button 7 Stand by Wake up Press shortly to toggle Clear log Press and hol
34. portant To avoid adding unwanted transition resistances to the measurement result the Kelvin clamps or Kelvin probes shall be connected directly to the test object and not to e g a bolt head In some cases it might be advisable to use separate sense cables forming a conven tional four point measurement in order to get a more accurate voltage sense Save test results A When LOG is activated measurement results are automatically saved in the memory B When the log is OFF only the latest value is stored and only until the performance of a following measurement which overwrites the previous one Hold present test result When the LOG function is activated the measurement result is shown on the display for about 3 seconds After that it is stored in the memory If you want to study the result longer you can lock the display view by doing as follows 1 Press shortly the trigger on the Kelvin probe or the TEST button just after a measurement The latest test result is locked and shown on the display This is confirmed by a padlock symbol on the display and an audio signal 2 To unlock press shortly the trigger on the 5 OPERATING INSTRUCTIONS Kelvin probe or the TEST button Delete present test result 1 Press and hold about 1 s the trigger on the Kelvin probe or the TEST button just after a measurement The latest test result is deleted from screen and log This is also confirmed by an audio signal Note This i
35. r decimal separator which in stead follows the Windows regional settings ce MOM2 ZP BDO3E 8 3 Start MOM2 Win 1 Click the MOM2 icon on the desktop or run the file Mom2Win exe Start gt All programs gt Programma The program will startup showing the start page Tl MOM2 Win FEER File Tools Settings Help MOM2 Win Connected to S N 0 on port COM41 Measurements Program USER positions Calibration Megger Figure 8 3 1 Start page Exit MOM2 Win 1 Exit the program by selecting Exit from the File menu or by clicking on the X button in the upper right corner of the window The program will ask for a confirmation be fore it closes 8 MOM2 WIN 8 4 Connecting to MOM2 To establish the Bluetooth connection the MOM2 must be paired to the PC see section 4 3 Automatic connecting 1 Turn the function selector to the PC COM position on the 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 If there are several paired MOM2 instruments nearby the SW will con nect to the first one detected The connection status is shown on the start page see Figure 8 3 1 Manual connecting 1 Open the Connection settings window from the Settings menu or double click on the connection status text field on the sta
36. rt page The Connection settings window will then pop up see figure below IMOM Win Settings Connection settings Available COM ports COM41 w PC date and time o MOM date and tim Figure 8 4 1 The Connection settings window no connec tion established ZP BDO3E MOM2 EEE 8 MOM2 WIN 2 Choose a COM port in the drop down list and click the Connect button The program will try to connect to a MOM 2 Connection settings instrument over the specified COM port Connected to SN 0 on port COMA1 If it is unknown which COM port to use the program can scan all available ports until it finds a MOM2 instrument 3 Click the button Scan for MOM2 Available COM ports The operation can be interrupted with the Cancel scan button DT MOM2 Win Settings EIER IE MOM Win Settings MOM date and tim PC date and time Synchronize clock PC gt MOM Connection settings Searching for MOM on port COMS Available COM ports COM41 w Cancel scan MOM date and tim PC date and time LC os Figure 8 4 3 The Connection settings window connection established Refresh button Provided that the MOM2 and the PC are connected to each other the MOM2 date and time and the PC date and time fields are updated every time you open the Connection settings window or when you click the Refresh button see Figure 8 4 3 Synchronize clock PC gt MOM2 When you click the Synchronize clo
37. s Inputs SENSE Connector 4 mm banana jack Voltage 3 VDC Trigger input Threshold 8 V DC DCIN 12 24 V DC 2 A max Logger Logger Data Label Timestamp max min Lim it Resistance Meas time P F limit Labeling schemes Circuit breaker oriented or running numbers Capacity 190 measurements Wireless communication Headset Bluetooth PC communication Bluetooth PC communication Bluetooth YE MOM2 ZP BDO3E ZP BDO3E MOM2 EEE INDEX Index A PS ee 12 Application examples ee ee ee ee ee ee 32 adel es eli eres N NE ORE HORE EE 20 B Basic technical descriDON ee ee ee ee 8 8 arie ie eie AE N EE N OE N 21 Battery charging indicator ss ES EE 11 Battery charging LED BER 6 AA OE OE EO ONE ON N 21 BOOT E RO EE EE EE EE EN 11 Battery power supply os ee ee 21 BETON AA AE ee er 15 Both els grounded IN AE NE EE 9 C O OE een 40 ae EE EE ee 11 EE E EE E E E T E 17 ee EEEE EE 17 Connector for the battery charger 11 Connectors for trigger se EE EE 11 Current output terminal OH en 11 Current output terminal Hu 11 D Delete all reults nen 23 Delete present test result 23 Delete ESS RE ER GE 23 ie EE N OE N N OE EE EEEER 22 BIS e EE N E E EE 11 DISS di RE EE OE N 9 E F F NF ION MA OR EED OT 14 Functions and set He EE EE EE DE ner 14 PUIIGHON SEI One AE N HANE 11 G H Hold present test result ee ee e
38. s also possible to carry out when the result is locked on display Recalling test results from the log 1 Saved results can be recalled by scrolling to desired label using the A V keys Delete results in the log 1 Select label using the A V gt keys 2 By pressing the C key the display will prompt CLR in big characters 3 Delete by pressing the OK key Cancel can be done by pressing the C key In Circuit breaker testing mode the measure ment results will be deleted one at a time Note Delete all results in the log 1 Press and hold for 5 s the red button below the TEST button Note This will delete the log memory for both log modes Circuit breaker testing and Running numbers ZP BDO3E MOM2 BE 5 OPERATING INSTRUCTIONS 5 2 Measurement with max the maximal and minimal current values dur ing the test 268 A and 250 A charge l MAX 1 Read the section 5 1 General instructions 2 If applicable connect the ground cable pro tective earth 3 Make the desired settings in the SET options In this example LOG and P F are disabled set to OFF 4 Attach the test cables 5 Turn the function selector to desired I Imax position The instrument indicates that it is charging the capacitor by a repeated sound and on the display shows alternating CAP and CHG and the lock symbol Pictures shows the two display views Charging 6 The MON2 is ready for a measurement when th
39. s be EER 34 Be SN ONE WN aa N OE N 35 Ede ei PA We 35 8 4 Connecting to MOM2 ees EE SERE EE ER EE EE Re 35 Automatic connecting een 35 Manual Connecting ie EUER NEO 35 8 5 Read the measurement log 37 Export data TO Tile AE N EE arsenate 38 Delete all data on the instrument 39 6 O User SETTINGS nee 39 E MOM2 ZP BDO3E Read existing Settings nnnnnn 39 Program User POSITIONS ee ee ee noes 39 SW ION de AR EN EE EE OE 40 Required equipment 40 On 40 Voltmeter calibration as ee ie GE EE 40 Ammeter calibration eie ee ee ee ee EE ee 40 Calibration report en sen 41 9 Specifications ET ER EE EE 42 Specifications MON nenn 42 EN AE ern 44 ZP BDO3E MOM2 55 1 SAFETY For your own safety and to get the maximum benefit from your instrument please ensure that you read and understand the following safety instructions and warnings before using the instruments Symbols on the instrument Caution refer to accompanying docu ments 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 OD Protective conductor terminal Safety instructions Read and comply with the following instructions Always comply with local safety
40. s for the measurement A Kelvin test uses four wires and meas ures continuity resistances ensuring all contact and lead resistances are compensated for which allows a much greater accuracy in measurements Each Kelvin probe assembly has two probe tips When contacting the test object it will be contacted with two plus two probe tips One pair is for the current generated The other pair will measure the very small voltage present Principle for the 4 wire Kelvin test N MOM 2 ZP BDO3E 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 Permission related work that may include paper work could many times be avoided However the local safety regulations shall always be followed Using the DualGround method might cause a small measurement error cause by the current running through the ground loop The error value depends on the relation between the two parallel circuits Example If the test object is 50 uO and ground loop is 10 mO the error will be 0 5 Two 10 m 95 mm grounding cables has a resistance of around 3 6 mQ Transitional resistance in connec tions and clamps to be added Both sides grounded High voltage C Up to several kV N mm ca Me if n
41. t cable to the cur rent out minus terminal on the MOM2 and 1 The circuit breaker shall be disconnected closed and grounded on both sides 2 Attach the black 3 m test cable with Kelvin attach the other end to ground close to clamp and the Kelvin probe with trigger to where the CB s grounding cable is attached the instrument the opposite side of CB from where the ex 3 Hook the MOM2 to your belt or use the strap tra ground cable is attached to hang it around your neck 5 Mount the 0 1 m plate to the current out plus terminal on the MOM2 and attach the A Attach the black test cable with Kelvin clamp extra ground cable to the plate to one side of the CB using the man lift 6 Connect the sensing cables red and black to the CB 7 Remove the original CB grounding cable on 6 Press and hold the Kelvin probe to the test the side where the extra grounding cable is object and pull the trigger attached 5 Move yourself to the other side of the CB us ing the manlift 8 Press the TEST button Grounding cable removed during test Traditional measurement from ground Injection is done through existing grounding cable earthing Optional cable Note The test can also be do n by using two Kelvin Kit is needed Available kits have 5 10 or 15 m cables clamps Disconnection 1 Re attach the original CB grounding on the side where the extra grounding is attached 2 Disconnect the sensing cables from the C
42. the instrument not just the currently selected one ZP BDO3E MOM2 Er 8 MOM2 WIN 8 7 Calibration Required equipment m Stable DC voltage source m Calibrated reference voltmeter m Reference shunts 1 MO and 10 MO Procedure 1 Click the Calibration button on the Start page or select Calibration from the Tools menu to switch to the calibration page The existing calibration factors will be read from the instrument and the calibration page will be disabled until it is finished WM MOM2 Win File Tools Settings Help Figure 8 7 1 Calibration page Loading calibration factors during startup Voltmeter calibration The voltmeter should be tested in three ranges 1 Connect the voltage source to the MOM2 sense input correctly polarized 2 Adjust voltage so that it falls within 10 of the stated reference voltage using the calibrated voltmeter 3 Type the value in the U reference column in MOM2 Win 4 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 5 Click the Verify button The voltage measured with the new calibration factor will be shown in the U Verified field The deviation in percent from the reference value will be shown to the right 6 Repeat from step 1 for the next two ranges File Tools Settings Help Calibration U range 2000 mV
43. ues and units the units are placed in the column headers B If file type txt is selected the data will be saved with the values separated by tabs et MOM ZP BDO3E Delete all data on the instrument 1 In the Measurements window click the Delete all data button to erase all the measurements in the instrument log DER E Delete all measurements Deleting item number 42 Figure 8 5 4 Delete all measurements progress 8 MOM2 WIN 8 6 User settings 1 Click the Program User positions button on the start page or choose Program User positions from the Tools menu META File Tools Settings Help SER Program USER positions USER position No 2 Measurement mode 3 sI gt Imin Min current gt 100A Pass fail limit Pass fail limit unit Pass fail limit value Log mode Running numbers Read from instrument Save to instrument Figure 8 6 1 Program User positions Read existing settings 1 Select User position No 1 3 2 Click the Read from instrument button to see the current settings on the instrument All three user settings will be read not only the one selected in the combo box The val ues for minimum current pass fail limit and type of logging will be updated Program User positions 1 Make the desired settings and click the Save to instrument button Note All three User positions will be updated on
44. ulated see fig below WW MOM2 Win File Tools Settings Help EIER Calibration U measured MITE TT report preview Calibration report MOM2 microhmmeter Serial number 1024135 Software version Reference values U first range U second range U third range R first shunt R second shunt 2V 200 mV 10 mV 1000 pQ 10 mQ 8 MOM2 WIN Measurements with the old calibration factors U range U reference 2000 mv 10 200 mV 410 10 mV 10 Measure 2000 Measure 200 Accuracy 0 011 0 013 Calibration time 2010 05 05 13 22 33 Measured value 0 29 Measure 10 1 Shunt R reference R measured R verified 1 Measure r Accuracy Save to instrument Calibration report Figure 8 7 4 Ammeter calibration 6 Click the Verify button A measurement is started and the Resist ance measurement in progress window will be shown 7 Repeat from step 1 for the next reference shunt When the resistances over both the shunts have been measured and the result is satis factory you can save it to the MOM2 8 Click the Save to instrument button 9 If the result of the tests is not satisfying or you want to start over click the Cancel button This will empty the calibration dialog and the calibration factors are read from the instru ment again Calibration report 1 Click the Calibration Report button to show a preview of a calibration report It
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