Megger DLRO 600 User Manual
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Megger DLRO 600 User Manual

High current, low resistance ohmmeter
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M
DLRO
600
®
High Current, Low Resistance Ohmmeter
USER MANUAL

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Summary of Contents for Megger DLRO 600

  • Page 1 DLRO ® High Current, Low Resistance Ohmmeter USER MANUAL...

  • Page 2: Safety Warnings

    SAFETY WARNINGS THESE SAFETY WARNINGS MUST BE READ AND UNDERSTOOD BEFORE THE INSTRUMENT IS USED. DLRO600 is supplied without a plug terminating the supply lead. An appropriate plug must be fitted prior to use. The instrument can draw 25 amps when running at full current output so please ensure an appropriate plug is used. The DLRO200 must be grounded (earthed) when in use.

  • Page 3: Table Of Contents

    CONTENTS SAFETY WARNINGS GENERAL DESCRIPTION OPERATION Main menu screen TEST menu OPTIONS menu CURRENT menu Warning messages Entering notes in the memo screen Test result storage Real time downloading of test data. SYMBOLS USED IN THIS DOCUMENT AND ON THE INSTRUMENT TEST TECHNIQUES &...

  • Page 4: General Description

    GENERAL DESCRIPTION The Megger ® DLRO ® 600 is an a.c. powered low resistance ohmmeter The use of a four terminal measurement technique removes the test lead deigned to measure d.c. resistances in the low milliohms or microhms resistance from the measured value although the use of lightweight current using a maximum test current of 600 Amps d.c.

  • Page 5: Operation

    Below this are details of the test current selected (SET CURRENT), maximum current to be allowed (CURRENT LIMIT), the number of stored tests and the current date and time. To perform a measurement is straightforward. DLRO 600 V1.00 COPYRIGHT MEGGER LIMITED...

  • Page 6: Test Menu

    OPERATION Please note that if your DLRO600 is inadequately grounded / earthed it will securely connected to the item under test before pressing the Test button. not be possible to start a test. The DLRO600 checks voltage and current loop continuity as in Normal Mode and, if adequate, passes a continuous d.c.

  • Page 7: Options Menu

    OPERATION measure will then activate the measurement. the settings should be 9600 baud, 8 data bits, 1 stop bit, and no parity. AUTOMATIC mode is abbreviated to AUTO under the TEST heading in Downloading data does not cause the stored data to be erased from the main menu screen.
  • Page 8 OPERATION Passbands Use the cursor control Up and Down arrows to adjust the highlighted data. Step to the next item by using the Right cursor control arrow. The passband option allows you to set upper and lower limits between which the test result must lie if it is to be assigned a Pass. Readings that fall The row below DD MM YY HH MM contains respectively the date, the above the upper limit or below the lower limit will be assigned a Fail.

  • Page 9: Current Menu

    OPERATION Data is stored for up to 10 years in battery backed RAM. Press Enter to clear this message and correct the discontinuity in the P circuit. CURRENT Menu There are two options, SET, and LIMIT. Press TEST again. If the P circuit is complete DLRO600 will attempt to pass the test current.

  • Page 10: Test Result Storage

    OPERATION of pressing Enter to return to the Main Menu screen, briefly press any SET CURRENT 50 alphanumeric key. You will enter a MEMO screen that allows you to enter UPPER LIMIT 0.9990000 up to 160 characters of alphanumeric information concerning the test. When LOWER LIMIT 0.0000000 you have entered all information press Enter and the measurement and memo will be stored in memory.

  • Page 11: Test Techniques & Applications

    TEST TECHNIQUES & APPLICATIONS º It is important that the potential probes are positioned on the test sample 2 milliohms each at 20 C and so DLRO600 will be able to measure up to 3 º inside the current probes. milliohms in the item under test with leads at 20 C.

  • Page 12: Specifications

    < 8 seconds Manual or AUTO Safety: IEC61010-1 mode, Refreshed every 2 EMC: IEC61326-1 second in CONTINUOUS mode Operational inaccuracies: Refer to www.megger.com Display: Measurement: Large, high resolution backlit liquid crystal display Dimensions: 410 x 250 x 250 mm Weight:...

  • Page 13: Repair And Warranty

    WEEE DATE OF PURCHASE BY THE USER. The crossed out wheeled bin placed on the Megger products is a reminder NOTE: Any unauthorized prior repair or adjustment will automatically not to dispose of the product at the end of it’s product life with general invalidate the Warranty.
  • Page 15 T +33 (1) 30.16.08.90 F +1 214 337 3038 F +33 (1) 34.61.23.77 Megger products are distributed in 146 countries worldwide. This instrument is manufactured in the United Kingdom. The company reserves the right to change the specification or design without prior notice.

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