Related Manuals for Megger MJOLNER 200
Summary of Contents for Megger MJOLNER 200
- Page 1 MJÖLNER 200/600 Micro-ohmmeter User’s Manual Art No. ZP-BD02E Doc. BD0161OE V09a 2019...
- Page 3 © 2013-2019, 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
Contents 1 Safety 6 Application examples ............. 6 ............24 Symbols on the instrument .......... 6 6.1 Test a circuit breaker – both sides Safety instructions ............6 grounded ..........24 2 Introduction 6.2 Measuring resistance at bus-bar joints ..25 ............. 8 Measuring using the remote control ...... - Page 5 BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 6: Safety
If you attempt to The unit can also be returned to service the instrument yourself the warranty is Megger at any timeat at no charge for no longer valid. the disposal. Do not use any accessories that are not intend- ed for use together with the instrument. - Page 7 Do not expose the instrument to rain or mois- ture. Refer all servicing to Megger authorized person- nel. If you need to return the instrument, please use either the original crate or one of equivalent strength.
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Page 8: Introduction
2 INTRODUCTION Introduction The MJÖLNER 200 and 600 are designed to measure the resistance of circuit breaker contacts, bus-bar joints, contact elements 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. - Page 9 2 INTRODUCTION BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 10: Control Panel
3 CONTROL PANEL Control panel Grounding terminal Sensing terminals Connection for mains voltage DC+ current output Switch for mains voltage Shunt output TEMP. SENSOR Clamp sense input This interface is for connection of a tempera- ture probe for temperature compensating. INTERfACE for communication with PC and MJÖLNER Win. - Page 11 3 CONTROL PANEL BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 12: Menu Options
4 MENU OPTIONS Menu options 4.1 Main menu 4.2 Setup menu Press <ENT> to go to the "Setup Menu" A few seconds after instrument power up the "Main Menu" will be displayed. Use the keys <F1> and <F2> to move from one menu item to another. -
Page 13: Result Window
4 MENU OPTIONS 4.3 Result window Contents of the setup menu Menu Legend Range of After a measurement the result is shown on the item values display. The result window can also be activated by Buzzer On/Off pressing the <ESC> key when in the main menu. Dur- Key click and audio warning during the measurement. -
Page 14: Operating Instructions
5 OPERATING INSTRUCTIONS Operating instructions 5.1 General application Connect the MJÖLNER to the mains and switch it on. Set the test current using the keys <+> and Important <-> or use one of the preselected currents us- Read and comply with the safety instruc- ing the <F1>, <F2>... -
Page 15: Temperature Probe (Optional)
5 OPERATING INSTRUCTIONS 5.2 Safety functions Temperature probe (optional) The temperature probe is used for temperature com- pensation of conductors (copper and other metals). See High temperature "SM7" in section "4.2 Setup menu" on page 12. If the temperature in MJÖLNER rises too high, the Connect the cable to the TEMP. -
Page 16: Printer
5 OPERATING INSTRUCTIONS 5.3 Printer 5.4 Run with MJÖLNER Win The thermal printer needs no service except from MJÖLNER Win software is delivered on a CD together replacing the paper roll. with MJÖLNER. Note To use MJÖLNER Win together with a Replacing printer paper MJÖLNER 200/600 a software code has to be entered to unlock the MJÖLNER. -
Page 17: Remote Operation
“Micro-Ohmmeter Remote”. Enable the Bluetooth function on the mobile. Connect the XLR Bluetooth Dongle to the "REMOTE" terminal on MJÖLNER. Start the Megger Micro-Ohmmeter app in the mobile Press on the “SCAN” area. After a while the Bluetooth communication is enabled. -
Page 18: Verify The Measuring Current
5 OPERATING INSTRUCTIONS 5.6 Verify the measuring current Important Read and comply with the safety instruc- tions. Always comply with local safety regula- tions. Shunt output Connect mV-meter to the SHUNT OUTPUT. Short circuit the current outputs. Set the test current to 100 A and press START. Read out the mV value and then press STOP. -
Page 19: Calibration And Service Menu
5 OPERATING INSTRUCTIONS 5.7 Calibration and Service Service menu description menu Menu item Legend S1 Calibration See "3" on page 10 S2 Shunt Only for manufacturer service Calibration S3 t rising edge Set the time of the rising slope/ramp up 1-3 s (M200 1-30 s). Default 1 s. Switch on MJÖLNER and let it be on for S4 t holding Set the time for the holding/measur-... -
Page 20: Troubleshooting
5 OPERATING INSTRUCTIONS 5.8 Troubleshooting 5.9 Optional accessories Fault Possible cause Remedy Item Art. No. MJÖLNER Win I ≠ Iset lamp lit Resistance too high Reduce the current BD-8010X Software key code for unlocking the MJÖLNER (on panel) for the selected Remote control current BD-90010... -
Page 21: Remote Control
5 OPERATING INSTRUCTIONS Remote control Extension cables The remote control has most of the functionality in the MJÖLNER such as starting and stopping, setting Calibration shunts the test current and read out the test values. XLR Bluetooth dongle MJÖLNER Win tests can be done remotely with an android mobile. -
Page 22: Dualground Kit
5 OPERATING INSTRUCTIONS DualGround kit DualGround kit (XA-12992), Current probe 200 A, max. conductor size 50 mm diameter (2”), test cables 5 m. Note: Included in Ordering No. BD-19193 for MJÖLNER 200 and in Ordering No BB-59093 for MJÖLNER 600. MJÖLNER 200/600 ZP-BD02E BD0161OE... - Page 23 5 OPERATING INSTRUCTIONS BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 24: Application Examples
5 OPERATING INSTRUCTIONS Application examples 6.1 Test a circuit breaker – both sides grounded Important Read and comply with the safety instruc- tions. Always comply with local safety regula- tions. Note The measurement accuracy will be lower with both sides grounded and depends on the accuracy of the external current clamp and the ratio of the currents –... -
Page 25: Measuring Resistance At Bus-Bar Joints
5 OPERATING INSTRUCTIONS 6.2 Measuring resistance at object being tested and the COM terminal. Connect the MJÖLNER to the mains and bus-bar joints switch it on. Connect the Remote control cable to the Important! "REMOTE" terminal on MJÖLNER. Read the manual and comply with the Connect the sensing leads to the two banana Safety instructions before using the sockets or to the sockets on MJÖLNER. - Page 26 5 OPERATING INSTRUCTIONS ing the <F1>, <F2> or <F3> key. Press the <START/STOP> key. Using an external voltmeter, measure the voltage drop (voltage) across each contact element within every section of the bus-bar. Note A multimeter must be set to DC and to mea- sure voltage.
- Page 27 5 OPERATING INSTRUCTIONS BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 28: Specifications
5 OPERATING INSTRUCTIONS Specifications MJÖLNER 200/600 Measurement section Range 0 – 999.9 mΩ Specifications are valid at nominal input voltage. Specifications are Resolution 0.01 μΩ below 100 μΩ subject to change without notice. 0.1 μΩ below 1.0 mΩ Environment 1 μΩ below 10 mΩ... - Page 29 5 OPERATING INSTRUCTIONS BD0161OE ZP-BD02E MJÖLNER 200/600...
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Page 30: Index
INDEX Index Temperature probe ......... 15, 21 Test a circuit breaker ........24 Troubleshooting ..........20 Bus-bar joints..........25 Unlock the MJÖLNER ........16 Calibration ............. 19 USB memory stick ......... 14 Calibration kit ..........21 Connect a PC to MJÖLNER ......16 XLR Bluetooth dongle.......14, 17, 21 Control panel .......... - Page 32 ▪ 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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