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Microhmmeter

1. Read the User s manual before using the instrument 2 Ground the bus bar on both sides le 3 Ground MJOLNER 600 Test a circuit breaker using DualGround 4 Connect the current cables Do not connect the sensing cables aa testing 5 Select Continuous Mode in the Setup Menu LL 1 Make certain the line is de energized on both sides of the circuit 6 cerihetectaurrent a 7 Inthe Setup Menu set th t clamp to On and key i a Inthe Setup Menu set the current clamp to On and key in 2 Ground ENOS on both side and make certain it is closed the proper sensitivity of the current clamp you are using ml es Soe ENE et 8 Press the lt START STOP gt key Je me POMPE CUNEN gt CADIER 9 Using an external voltmeter measure the voltage drop voltage 5 Apply an external current clamp to one of the grounding cables across each contact element within every section of the bus bar gt and connect the clamp outputs to MJOLNER 600 being tested 6 Setthetest current 10 Stop the measurement by pressing lt START STOP gt or lt ESC gt keys 7 Inthe Setup Menu set the current clamp to On and key in 11 Calculate the actual resistance the proper sensitivity of the current clamp you are using Example If the voltage drop is 0 0067 V at a current of 100 A the resistance will be 0 0067 100 QO i e 67 pQ Note The method above can be automized using a TM1800 for measuring and storing the results It is of course applic
2. amp PROPRIETARY RIGHTS 2008 Programma Electric AB All rights reserved The contents of this document are the property of Programma Electric 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 Programma Electric AB Programma Electric AB has made every reasonable attempt to ensure the completeness and accuracy of this document However the information contained in this document is subject to change without notice and does not represent a commitment on the part of Programma Electric 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 Programma Electric AB is certified according to ISO 9001 and 14001 Programma Electric AB Programma Eldarv gen 4 T 46 8 510 195 00 Box 2970 F 46 8 510 195 95 SE 187 29 T BY info programma se Sweden www programma se Subject to change without notice Art No ZI BBO1E Doc BB0383AE 2008
3. MJOLNER 6 Microhmmeter Programma A Megger Group Company ce Ge Li aul se MJOLNER 600 DualGround Testing Microhmmeter The MJOLNERTM600 is designed to measure the resistance of circuit breaker contacts bus bar joints contact elements in bus bars and other high current links The product has been designed with safety ease of use and versatility in mind The microhmmeter conducts true DC ripple free current and can be used anywhere to measure a low resistance value with high accuracy With MJOLNER 600 it is possible to make measurements according to the DualGround method This means that the test object will be grounded on both sides throughout the test giving a safer faster and easier workflow Choose the MJOLNER 600 with excessive power resources for demanding applications superior measurement accuracy and when 300 Amp continuous is required The lightweight and rugged suitcase design makes MJOLNER 600 an excellent choice when you need a portable solution in the field When the case is closed the product can withstand the impact of water dust or sand it even floats Two optional accessories are a remote control and the PC software MJOLNER Win that is compatible with IPS CBEX and have export functions for tables to Microsoft Excel Application examples Measuring resistance at bus bar joints IMPORTANT 1 Make certain the line is ee on both sides of the bus bar
4. UT 100 uV A Shunt output From internal shunt 60 mV at 600 A Inaccuracy 1 Inputs SENSE Max 20 V between terminals and to protective earth ground Max 20 V between terminals and to protective earth ground INPUT DC current clamp Input sensitivity Adjustable 0 1 20 mV A Input impedance gt 1 MO M MIOLNER Remote Control l x Object Type Breaker AB 1 ObjectId ABB Operator John h Mjolner win 1 Breaker AB 1 Breaker AB 1 2008 2 12 hed Rome Proj name 64 Set current 1 JV Immediate start No Comment 80 Set current 2 FN Immediate start 100 Set current 3 M Immediate start 120 Set current 4 M Immediate start curre Vv en 150 Set current 5 Immediate start mOhm 021208 05 03pm Dual ground Breaker 2 J Mp 6 2402 mOhm 50 02 12 08 05 03pm Dual ground Breaker 2 130 Set current 6 JV Immediate start a Mp 5 2396 mOhm 50 02 12 08 05 02pm Dual ground Breaker 2 Mp 3 2935 uOhm 100 02 12 08 12 42pm Phase 3 after cycling Mp 3 3242 uOhm 100 021208 12 42pm Mp 3021 uOhm 100 021208 12 41pm Mp 1 2336 uhm 100 021208 12 38pm J Time 12h format F Date mm dd yy format Printout all values F Curent clamp CT on Print MJ LNER Win Remote control Optional accessories MJOLNER Win The Windows program makes it easy to manage save all test results in a simple way All information meta data of the test object e g a circuit breaker and t
5. able for all resistance measuring on multiple contacts e g circuit breaker contacts 8 Press the lt START STOP gt key 9 The result is shown after some seconds The result is saved you can make a printout and or run a new test Features Fully automatic Micro processor controlled testing Equipment and methods that supports Database CEBEX IPS integration DualGround testing are associated with Rugged and Lightweight suitcase design withstands the DualGround a symbol hj Mae ae rtabl impact of water dust or sand Testing les the use of groundbreaking technology p and methods that enables a safe fast and Safe test DualGround easy workflow with both sides grounded Remote control throughout the test S You can make tests with both sides of the test object grounded an Using an external voltmeter measure the voltage drop voltage additional safety feature across each contact element within every section of the bus bar being tested Grounding terminal Adjustment keys to set the measuring current and all menu values le Connection for mains voltage D Status LED s indicating the actual measuring status aa Switch for mains voltage Error LED when the adjusted current could not be reached Serial interface for PC RS232 Start Stop key with status LED de Remote control connector DC current output gt Printer Sensing terminals LCP Display B DC current outp
6. he test results are stored together and they can easily be transferred to Microsoft Excel for further analysis Remote control Many times you place the test equipment on the ground while the cables are connected high up on a circuit breaker In these situations it can save a lot of time using a remote control during the test The remote control has most of the functionality in the MJOLNER 600 such as starting and stopping setting the test current and read out the test values Ordering information MJOLNER 600 Incl Std cable set 3 m current cables 2 x 3 m 35 mm and sensing cables 2 x 3 m Ground cable BB 59090 Art No Incl Std cable set 5 m current cables 2 x 5 m 35 mm and sensing cables 2 x 5 m Ground cable BB 59091 Incl Std cable set 3 m current cables 2 x 3 m 35 mm and sensing cables 2 x 3 m Ground cable and DC Current clamp 200 A 20 mV BB 59092 Optional accessories MJOLNER Win Windows software BD 8010X Remote control BD 90010 Temperature probe BD 90012 Thermal paper roll for printer GC 00050 Extension cable set 5m current cables 2 x 5 m 35 mm and sensing cables 2 x 8 m GA 03206 Extension cable set 10 m current cables 2 x 10 m 35 mm and sensing cables 2 x 13 m GA 03208 Calibration kit 200 A 20 mV shunt and instruction BD 90022 DualGround kit DC Current clamp 200 A incl cables XA 12792 Ge LL mi NOTICE OF COPYRIGHT
7. ut Keys to control the menu functions Shunt output LED displays indicating the value of R and Clamp sense input On MAMAN Microhmmeter Programma SERIAL TEMP m0 GB 7 is O d 4 oaeen SHUNT om w o 100 uV A i INPUT DC current clamp 18 max 20 mV A DC ADJUST Specifications MJOLNER 600 Specifications are valid at nominal input voltage and an ambient 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 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 CE marking LVD EN 61010 1 2001 EMC EN 61326 1997 A1 1998 A2 2001 A3 2003 General Mains voltage 100 120 200 240 V AC 50 60 Hz Power consumption max 39 Aat 100 V 18 A at 230 V Protection Thermal fuses Software Dimensions 486 x 392 x 192 mm 19 x 15 4 x 7 6 Weight 13 8 kg 30 4 Ibs Measurement section Measuring range 0 999 9 mO Resolution 0 1 uQ below 1 0 mQ 1 yO below 10 mO 10 HO below 100 mQ 100 UO below 1000 mO Inaccuracy 50 600 A Typ 0 3 UO Max 2 pO ta 10 40 C R lt 1 MQ Outputs DC COM Range 5 600 A DC steps of 1 A Output voltage max 5 25 VDC at 600 A OUTP

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