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DLRO10HD and DLRO10HDX

10 A Digital Low Resistance Ohmmeter

User Guide

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Summary of Contents for DLRO10HD

Page 1: ...DLRO10HD and DLRO10HDX 10 A Digital Low Resistance Ohmmeter User Guide ...

Page 2: ......

Page 3: ...tch 8 Range Rotary Switch 9 Resolution and Accuracy 10 Test Leads 11 Connection to the Instrument 11 Test Lead Connection 11 Connection to a Test Piece 12 DH4 C Duplex Hand spikes 12 Tests with the DH4 C Duplex Hand spikes or Individual Leads 12 Tests 13 Inductive Test 13 Manual Bi directional Test 14 Automatic Bi directional Test 15 Automatic Uni directional Test 16 Continuous Test 17 Tests with ...

Page 4: ... Mains Power Fuse 25 Battery Care 25 Battery Charge 25 Specifications 26 Power Lead 27 Power Lead Connection Table 27 Accessories 28 General Accessories 28 Test Leads No In line connector 28 Duplex Leads 28 Individual leads 29 Test leads In line Connector 29 Repair and Warranty 30 Calibration Service and Spare Parts 30 Approved Repair Companies 31 Return an Instrument for Repair 31 End of Life Dis...

Page 5: ...ure that the test subject cannot be re energised whilst the instrument is connected Do not leave the equipment unattended when connected to the test subject Do not leave the equipment connected to the test subject after the test is completed The user must exercise caution when connecting to and disconnecting from the test subject Always connect test leads to the instrument before attaching to test...

Page 6: ... distribution panel and the electrical outlets CAT II Measurement category II Equipment connected between the electrical outlets and the User s equipment Measurement equipment may be safely connected to circuits at the marked rating or lower The connection rating is that of the lowest rated component in the measurement circuit Safety and Hazard Icons This section details the various safety and haz...

Page 7: ...e High Voltage warning message will flash if more than 50 V potential difference is applied between the Voltage terminals and the Current terminals This warning will not show if all terminals are at the same high voltage Note The warning will not operate if the instrument is set to Off F Discharge Voltage Current Warning The High Voltage warning and the red High Voltage LED on the panel will flash...

Page 8: ...charging Rugged case construction designed for use in demanding environments or the lab IP65 with the lid closed and IP54 with the lid open for protection against ingress during operation Multiple lead set options Megger connect leads see the lead set data sheet 10 A while measuring up to 250 mΩ and 1 A while measuring up to 2 5 Ω Monitors test lead contact which reduces the chance of erroneous re...

Page 9: ...erstand the inductive mode and charging process before a correct result is achieved Electromagnetic noise induced into the leads can interfere with a reading A noise icon alerts the User but does not prevent a measurement When dissimilar metals are joined a galvanic effect is created Users should select a Bi directional mode to make sure this effect is cancelled The instrument measures with curren...

Page 10: ... 13 15 3 Item Description Item Description 1 Current Terminals 9 Test button Start and stop tests 2 Potential Terminals 10 Navigation keypad setup and stored results 3 Test Lead LED Cable 11 Test modes and Off rotary switch 4 Display 12 Mains Power On LED 5 Save Button 13 Fuse 6 USB socket download records 14 Contrast button 7 Hazard warning LED during test 15 Mains Power Socket 8 Range Rotary Swi...

Page 11: ... Result Download mode 10 Over Temperature 3 Recall Test Result Mode 11 Refer to User Guide 4 Date and Time mode 12 High Voltage Warning 5 Save mode 13 Secondary Display 6 USB connected 14 Primary Display 7 Mains Power connected 15 Direction of Current flow in a test 8 Battery Status Secondary Display Directional arrow to show current flow above C indicator Directional arrow to show current flow ab...

Page 12: ...ocess Standing EMF s setup during the test are ignored so lower accuracy can result See Automatic Uni directional Test page 16 See Automatic Uni directional Test page 19 Automatic save DLRO10HDX 5 Continuous Test current is applied in both directions The test repeats at three seconds intervals See Continuous Test page 17 See Continuous Test page 20 Automatic save DLRO10HDX 6 Inductive Test current...

Page 13: ... kΩ 1mA 10mA 100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ 1 5 4 3 2 2 Green resistance ranges Low output power 0 25 W outputs Red resistance ranges Higher 2 5 W 1 A and 25 W 10 A power outputs Gshows Item Description 1 Date and Time Setup page 21 2 Resolution and Accuracy page 10 3 Delete Test Result Records page 24 4 Download Test Result Records page 23 5 Recall Test Result Records p...

Page 14: ...1 mA 0 to 25 Ω 1 mΩ 0 2 2 mΩ 25 mV 25 µW 10 mA 0 to 2 5 Ω 0 1 mΩ 0 2 200 µΩ 25 mV 250 µW 100 mA 0 to 250 mΩ 0 01 mΩ 0 2 20 µΩ 25 mV 2 5 mW 1 A 0 to 25 mΩ 1 µΩ 0 2 2 µΩ 25 mV 25 mW 10 A 0 to 2 5 mΩ 0 1 µΩ 0 2 0 2 µΩ 25 mV 0 25 W 1 A 0 to 2 5 Ω 0 1 mΩ 0 2 200 µΩ 2 5 V 2 5 W 10 A 0 to 250 mΩ 0 01 mΩ 0 2 50 µΩ 2 5 V 25 W Basic accuracy stated assumes forward and reverse measurements Higher 2 5 W 1 A a...

Page 15: ... and the Voltage detection circuit to be completed by the unit under test The Instrument checks for continuity in both C and P circuits A test will not start until there is a good connection to the test piece by the test leads Confirmation of successful continuity If C 1 2 and P 1 2 are constant the connectivity is good If either C 1 2 and P 1 2 flash there is no connectivity and the test will not...

Page 16: ...ay Lamp L1 Lamp L2 Description On red Off Inadequate continuity at C or P contacts Flashing red Off Voltage present between contacts Off On green Current 1mA test complete Off On red Measurement fail For example when the test leads are used in an Auto test mode 1 Press TEST 2 L1 shows a steady red to show there is a contact failure 3 When all four contacts are connected L1 goes Off 4 No LEDs show ...

Page 17: ...uctive loads are measured it is necessary to wait for the voltage to stabilise so the measurement process can take a few seconds or several minutes AUTO 3s 2 5 Ω 250 mΩ µA 100 2 5 kΩ 1mA 10mA 100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ Tip Use Clamp test leads optional accessory 1 Press TEST Test starts LED shows red Arrow direction animated based on current direction and plateau 2 C...

Page 18: ... across the test piece before TEST is pressed 1 Press TEST acknowledged by a beep sound Test starts LED shows red TEST Arrow direction animated based on current direction and plateau Test result for the currently connected test piece is shown 2 DLRO10HDX only Save test results if required Press The test result is saved and the memory slot number is shown The Save screen is shown for three seconds ...

Page 19: ...ED shows red TEST Arrow direction animated based on current direction and plateau 2 Test results for the currently connected test piece are shown 3 DLRO10HDX only Save test results if required Press The test result is saved and the memory slot number is shown The Save screen is shown for three seconds 4 The test automatically continues for subsequent connected test piece 5 DLRO10HDX only Press as ...

Page 20: ...ED shows red TEST Arrow direction animated based on current direction and plateau 2 Test results for the currently connected test piece are shown 3 DLRO10HDX only Save test results if required Press The test result is saved and the memory slot number is shown The Save screen is shown for three seconds 4 The test automatically continues for subsequent connected test piece 5 DLRO10HDX only Press as ...

Page 21: ...nds Last test record is shown while the next test is in progress 3 DLROHD10X only Save test results if required At any point press acknowledged by a beep sound Test results are saved until the test is stopped or the memory is full 2000 records 4 Press TEST to stop the test DLROHD10X only If was pressed in Step 3 Test results are saved and the memory slot number is shown The Save screen is shown fo...

Page 22: ...100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ 1 Press acknowledged by a beep sound Save function is available until the memory has 200 test records 2 Connect the test leads to the test piece Test starts LED shows red Arrow direction animated based on current direction and plateau TEST 3 Test results for the currently connected test piece are shown Test results are saved and their memor...

Page 23: ...s available until the memory has 200 test records 2 Connect the test leads to the test piece Test starts LED shows red Arrow direction animated based on current direction and plateau TEST 3 Test results for the currently connected test piece are shown 4 Test results are saved and their memory slot number is shown The Save screen is shown for three seconds 5 The test automatically continues for the...

Page 24: ...ep sound Save is available until the memory has 200 test records 2 Press TEST Test starts LED shows red TEST 3 Arrow direction animated based on current direction and plateau 4 Continuous measurements are taken on the connected test piece Tests are made every three seconds Last test record is shown while the next test is in progress 5 Press TEST to stop the test Test results are saved and their me...

Page 25: ... 200 memory slots are available Date and Time Setup AUTO 3s 2 5 Ω 250 mΩ µA 100 2 5 kΩ 1mA 10mA 100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ To Set Date and Time Press to toggle between D M Y or M D Y format Default DMY Press OK to toggle between Date and Time 1 Press to start adjustment 2 Press to toggle between D M Y and HM 3 Press to adjust 4 Press to scroll 5 Press OK to set ...

Page 26: ...und and Gshow on the display AUTO 3s 2 5 Ω 250 mΩ µA 100 2 5 kΩ 1mA 10mA 100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ 1 Last saved test result shows 2 Press to scroll through the test results records 3 Press OK to show a record for the selected slot Screen toggles between date and time when record was saved ...

Page 27: ...Windows computer 1 1 Plug a USB cable to the instrument USB port see Controls and Connections page 6 1 2 Connect the USB to the Windows computer 2 Open PowerDB For information on how to use PowerDB and download test results refer to the PowerDB help files The USB icon shows only while data download is in progress If communication to the host Windows computer fails a Communication Error window show...

Page 28: ...records are found and G show on the display flashes to show Memory Delete mode AUTO 3s 2 5 Ω 250 mΩ µA 100 2 5 kΩ 1mA 10mA 100 mA 1A 1A 10A 10A 250 Ω 25 Ω 2 5 Ω 250 mΩ 25 mΩ 2 5 mΩ 1 Press to toggle SLOt Single delete or ALL Delete All Single Delete Only the last test record in the list can be deleted at a time 2 Press OK to confirm deletion shows constant to confirm delete mode 3 Press OK to dele...

Page 29: ...s could affect resistance readings and are a safety hazard Mains Power Fuse Always use the correct rated fuse see Specifications page 26 Battery Care Caution Batteries are only to be installed or removed by an Authorised Service Centre Do not attempt to remove the batteries from this instrument To prevent deep battery discharge the battery should be charged at a minimum of three month intervals Ne...

Page 30: ...results DLRO10HDX only Weight 6 7 kg 14 8 lb Case Dimensions 315 x 285 x 181 mm 12 4 x 11 2 x 7 1 in Pouch for Test Leads Yes lid mounted Test Leads Dependant on order code selected IP Rating IP65 case closed IP54 battery operation Safety Rating In accordance with IEC61010 1 CATIII 300 V when used with optional terminal cover General Accessories page 28 Application IEC 61010 defines measurement ca...

Page 31: ...t plug The instrument has a two pin IEC60320 Mains Power socket Most power leads are made with three core cable so the ground connection will not be used Power Lead Connection Table Connection K International USA Earth Ground Yellow Green Green Neutral Blue White Live Line Brown Black If a fused plug is used make sure that it is installed with a 3 A fuse The instrument can be powered from 100 240 ...

Page 32: ...ical contacts 2 m 7 ft 2 242011 7 DH1 Duplex handspike 2 5 m 8 ft 2 6111 022 DH1 Duplex handspike 5 5 m 18 ft 2 242011 18 DH2 Duplex handspike 6 m 20 ft 1 6111 023 DH2 Duplex handspike 9 m 30 ft 1 242011 30 Straight duplex handspike heavy duty with fixed contacts 2 m 7 ft 2 242002 7 Straight duplex handspike heavy duty with fixed contacts 5 5 m 18 ft 2 242002 18 Straight duplex handspike heavy dut...

Page 33: ... m 18 ft 1 242021 18 Single handspike potential connections 9 m 30 ft 1 242021 30 Current clip current connections 2 m 7 ft 1 242041 7 Current clip current connections 5 5 m 18 ft 1 242041 18 Current clip current connections 9 m 30 ft 1 242041 30 Test leads In line Connector For details on the connection of lead accessories see DLRO test leads fitted with duplex Connectors DLROTestLeads_DS_en_V03 ...

Page 34: ...to be free from defects in materials and workmanship where the equipment is used for its proper purpose The warranty is limited to making good this instrument which shall be returned intact carriage paid and on examination shall disclose to their satisfaction to have been defective as claimed Any unauthorised prior repair or adjustment will invalidate the warranty Misuse of the instrument from con...

Page 35: ...trument for Repair If an instrument is to be returned the manufacturer for repair it should be sent freight pre paid to the appropriate address A copy of the Invoice and of the packing note should be sent simultaneously by airmail to expedite clearance through Customs A repair estimate which will show freight return and other charges will be submitted to the sender if required before work on an in...

Page 36: ...al Megger company or distributor or visit your local Megger website Batteries Battery replacement must only be done by a Megger authorised repair agent who will correctly dispose of the end of life battery or batteries The crossed out wheeled bin icon placed on the batteries is a reminder that the batteries must not be dispose of with general waste This instrument contains One sealed lead acid bat...

Page 37: ...truments Limited described in this User Guide is in compliance with 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 ...

Page 38: ...www megger com DLRO10HD and DLRO10HDX 34 ...

Page 39: ...www megger com DLRO10HD and DLRO10HDX 3 5 ...

Page 40: ...ll Off Veera Desai Road Andheri W Mumbai 400 053 India T 91 22 2674 0468 F 91 22 2674 0465 Megger GmbH Obere Zeil 2 61440 Oberursel Germany T 06171 92987 0 F 06171 92987 19 OTHER TECHNICAL SALES OFFICES Toronto CANADA Sydney AUSTRALIA Madrid SPAIN Mumbai INDIA and the Kingdom of BAHRAIN Megger products are distributed in 146 countries worldwide This instrument is manufactured in the United Kingdom...

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