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Summary of Contents for Megger DLRO 200
- Page 1 DLRO ® High Current, Low Resistance Ohmmeter User Guide...
- Page 2 T +44 (0)1304 502101 F +44 (0)1304 207342 www.megger.com Megger Limited reserves the right to alter the specification of its products from time to time without notice. Although every effort is made to ensure the accuracy of the information contained within this document it is not warranted or represented by Megger Limited to be a complete and up-to-date description.
- Page 3 Directive 2014/53/EU. Other equipment manufactured by Megger Instruments Limited described in this user guide is in compliance with Directives 2014/30/EU and 2014/35/EU where they apply. The full text of Megger Instruments EU declarations of conformity are available at the following internet address: megger.com/eu-dofc www.megger.com...
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Page 4: Table Of Contents
Test result storage ..........................15 4.20 Real time downloading of test data....................15 5. Test techniques and applications ....................16 Cleaning ..............................16 Test Sequence ............................16 Lead Resistance ............................16 Interference And Grounding The Sample ....................16 DLRO®200 www.megger.com... - Page 5 7. Specifications ..........................18 8. Accessories and Equipment ......................20 9. Calibration, Repair and Warranty ....................21 Return procedure ............................ 21 10. Decommissioning ........................22 10.1 WEEE Directive ............................22 10.2 Battery disposal ............................. 22 11. Worldwide Sales Offices ......................23 www.megger.com DLRO®200...
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Page 6: Safety Warnings
Measurement category II: Equipment connected between the electrical outlets and the user’s equipment. CAT III Measurement category III: Equipment connected between the distribution panel and the electrical outlets. CAT IV Measurement category IV: Equipment connected between the origin of the low-voltage mains supply and the distribution panel. DLRO®200 www.megger.com... -
Page 7: Warnings, Cautions And Notes
UK conformity. This equipment complies with current UK legislation EU conformity. Equipment complies with current EU directives. Equipment complies with current ‘C tick’ requirements. Do not dispose of by landfill, sewage systems or by fire. Protective Conductor Terminal Hot Terminals Power on Power off www.megger.com DLRO®200... -
Page 8: Instrument Overview
Instrument Overview 2. Instrument Overview Instrument layout Item Description Item Description RS232 port Delete button Power on LED TEST button Alphanumeric Keyboard Status lamp ESC button ENTER key Reduce contrast Two-axis paddle Increase contrast Display Display backlight DLRO®200 www.megger.com... -
Page 9: General Description
General description 3. General description The Megger ® DLRO ® 200 is an AC powered low resistance ohmmeter deigned to measure DC resistances in the low milliohms or microhms using a maximum test current of 200 Amps DC The maximum test current available is dependent upon the power supply, the resistance of the test leads and the resistance of the item being tested. -
Page 10: Operation
The POWER lamp will illuminate, the instrument will display the firmware version number and perform a calibration check. If this is successful the display will show “CALIBRATED”. If the check fails the display will show “NOT CALIBRATED”. DLRO 200 V1.00 COPYRIGHT... -
Page 11: Test Menu
AUTOMATIC mode is abbreviated to AUTO under the TEST heading in the main menu screen. AUTO mode may be exited by pressing the TEST button while the status light is flashing. www.megger.com DLRO®200... -
Page 12: Options Menu
Test Type Test Number Date Format Date Time Selected Current Resistance Measured Current Measured Voltage Upper Limit * Lower Limit * Pass Or Fail * * The last three lines will only appear if passbands have been set. DLRO®200 www.megger.com... -
Page 13: Passbands
If all memory has been filled, a message MEMORY FULL will appear and no more tests results will be stored although testing may continue without storing results. The main menu screen will also display “300 MEMORY FULL” instead of the number of stored tests. Data is stored for up to 10 years in battery backed RAM. www.megger.com DLRO®200... -
Page 14: Current Menu
A message CURRENT FLOW will appear if a current greater than approximately 10 mA is still flowing after a test is completed. This suggests that an inductive load has been accidentally tested and is still discharging. Do not disconnect the current loop while the discharge warning is showing. DLRO®200 www.megger.com... -
Page 15: Entering Notes In The Memo Screen
0.0000000 TEST TYPE NORMAL MEASURED RESISTANCE, CURRENT, VOLTAGE MEASURED RESISTANCE, CURRENT, VOLTAGE MEASURED RESISTANCE, CURRENT, VOLTAGE …………. MEASURED RESISTANCE, CURRENT, VOLTAGE MEASURED RESISTANCE, CURRENT, VOLTAGE PASS or FAIL The Upper and Lower limits are always shown in ohms. www.megger.com DLRO®200... -
Page 16: Test Techniques And Applications
Ideally the test specimen should be grounded during the test. If it is not grounded, noise pickup (50/60 Hz etc.) can affect accuracy and increase measurement errors by up to 1% typically. Excessive noise will cause the “EXTERNAL VOLTAGE” warning to be shown. DLRO®200 www.megger.com... -
Page 17: Download Powerdb
Download PowerDB 6. Download PowerDB You can now download direct from the Megger website to ensure that you have the most recent version available. Visit megger.com/powerdb The latest edition will be at the top. Click the “download” button beside the file. -
Page 18: Specifications
Accuracy: ±2% ±2 A Voltmeter input impedance: > 200 kΩ Hum rejection: 10 V rms Power Supply: DLRO200: 100 – 265 V AC rms 50/60Hz DLRO200-115: 100 – 130 V AC rms 50/60Hz Input Current: 10 A maximum DLRO®200 www.megger.com... - Page 19 95% RH non-condensing Altitude (max): 2000 m Safety: IEC61010-1 EMC: EN61326-1 Operational inaccuracies: Refer to www.megger.com Dimensions: 410 x 250 x 250 mm Weight: < 15 kg. Cleaning The DLRO200 may be cleaned using a damp cloth and soap solution. www.megger.com...
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Page 20: Accessories And Equipment
2 x potential leads with clips Current leads are fitted with heavy duty sprung clamps For further information visit the website: www.megger.com (60 mm jaw capacity). Potential leads fitted with smaller heavy duty crocodile clips 22 mm jaw capacity). -
Page 21: Calibration, Repair And Warranty
3. Pack the instrument carefully to prevent damage in transit. 4. Before the instrument is sent to Megger, freight paid, make sure that the returns label is attached or that the RA number is clearly marked on the outside of the package and on any correspondence. Copies of the original purchase invoice and packing note should be sent simultaneously by airmail to expedite clearance through customs. -
Page 22: Decommissioning
10.1 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. Megger is registered in the UK as a Producer of Electrical and Electronic Equipment. The Registration No is WEE/ HE0146QT. -
Page 23: Worldwide Sales Offices
Worldwide Sales Offices 11. Worldwide Sales Offices Oficina de ventas Teléfono e-mail +44 (0)1 304 502101 UKsales@megger.com USA – Dallas +1 214 333 3201 USsales@megger.com USA – Valley Forge +1 214 333 3201 USsales@megger.com USA – Dallas +1 214 333 3201 USsales@megger.com... - Page 24 +1 610 676 8500 +1 610 676 8610 +44 (0)1 304 502101 +44 (0)1 304 207342 Megger USA - Dallas Megger AB Megger USA - Fort Collins 4812 McMurry Avenue 4545 West Davis Street Rinkebyvägen 19, Box 724, SE-182 17 Dallas TX 75211-3422...
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