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ADWEL DRM-100 Скачать руководство пользователя страница 20

Chapter 2 — Getting to Know the DRM-100

Page 11

This mode can be used for troubleshooting equipment
under test.

Current versus Resistance Ranges

The maximum voltage that can be measured on the DRM-
100 voltage inputs is slightly over 2V, and it is this that
limits the maximum resistance value that may be read.
This allows measurement of higher resistances at lower
currents. The relationship between the selected test
current and the maximum possible resistance value is
shown below. The maximum value will vary between
instruments and individual measurements and depends
upon the DC offset voltage measured before the
beginning of each test.

10A over 200

m

Ω

20A over 100

m

Ω

30A over 67

m

Ω

40A over 50

m

Ω

50A over 40

m

Ω

60A over 33

m

Ω

70A over 28

m

Ω

80A over 25

m

Ω

90A over 22

m

Ω

100A over 20

m

Ω

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Содержание DRM-100

Страница 1: ...User Manual Model DRM 100 Digital Resistance Meter ADWEL International Limited an IRIS Power Company...

Страница 2: ...rity of ADWEL International Limited ReporteR is a trademark of ADWEL International Ltd Head Office ADWEL International Ltd an IRIS Power Company 3110 American Drive Mississauga ON L4V 1T2 Canada Tel 9...

Страница 3: ...es 1 Options and Accessories 3 DRM 100 accessories 3 Getting to Know the DRM 100 4 Front Panel Components 4 Power Entry Module with Main Switch 4 Grounding Earth Terminal 5 LCD Screen 5 Buttons 5 Curr...

Страница 4: ...100 17 Setting Input Voltage 17 Connecting to Device 18 Starting the DRM 100 19 Operation Sequence 20 Select the Test Current I SET 20 Select the Measurement Time t SET 20 Testing Procedures 21 Conven...

Страница 5: ...on the equipment and in the manual 4 Follow all operating instructions Safety Symbols In this manual the safety symbol with an exclamation point alerts you to operating and maintenance instructions t...

Страница 6: ...rgized and all parts of the test circuit are grounded Keep other people away from test activities with suitable barricades or warnings Treat all terminals of high voltage power equipment as potential...

Страница 7: ...with safety Emergency button which activation interrupts all output voltages Power Source The DRM 100 operates from a single phase power source It requires a two pole three terminal live neutral and g...

Страница 8: ...ore plugging in the three wire power cord make sure the receptacle is properly wired and has a ground contact Do not bypass the grounding connection Any interruption of the grounding connection can cr...

Страница 9: ...Phone 1 905 677 4824 Fax 1 905 677 8498 www www irispower com e mail techsupport irispower com Or Europe office Phone 44 1923 254433 Fax 44 1923 218278 www www irispower com Any Comments We re intere...

Страница 10: ...he resulting voltage drop is measured and used to calculate resistance True 4 terminal Kelvin measurement method The operator moves the test cables from phase to phase until all three are tested NOTE...

Страница 11: ...zed EHV substations where high electrical and magnetic fields are frequently present The DRM 100 instrument was also designed to function accurately and reliably with up to 1000 VAC of noise present o...

Страница 12: ...es The DRM 100 comes with these standard accessories Current Test Leads Potential Test Leads Ground lead Main input power cord suitable for location DRM 100 instrument User Manual this document The op...

Страница 13: ...of the DRM 100 and how to navigate the system Front Panel Components Power Entry Module with Main Switch Power Entry Module is located on the top left corner of front panel Main power switch and fuse...

Страница 14: ...conditions like current time and measured resistance Buttons On the left side of LCD screen are 4 membrane buttons They are used to select the time and current settings and to Start or Stop the test I...

Страница 15: ...s cycle constitutes the complete timed test sequence When the test current reaches the selected value the instrument shows the measured value of resistance If this button is pressed in the middle of t...

Страница 16: ...th red highlighted text EMERGENCY STOP The button latches in the stop position To release the button twist it clockwise RS 232 Connector This connector is used for calibration and testing purposes onl...

Страница 17: ...nsists of two pages namely Startup page and Main page The contents of these pages are described below Startup Screen On start up a window appears with the ADWEL logo the instrument name serial number...

Страница 18: ...and easy to read 41 2 digit measured resistance Resistance Displays The bottom area is reserved to show the resistance measurement It shows resistance in micro ohms or milli ohms m depending upon the...

Страница 19: ...0 to 60 seconds for all currents Continuous Resistance Test The instrument can be set to provide a continuous test current so that resistance may be continuously monitored This is achieved by setting...

Страница 20: ...that may be read This allows measurement of higher resistances at lower currents The relationship between the selected test current and the maximum possible resistance value is shown below The maximum...

Страница 21: ...Start This message reminds the user to select an appropriate current and time before pressing the biggest membrane button START STOP button to start the test During this message the instrument is in...

Страница 22: ...sent during ramping up of the current and while holding the pre selected current during the acquisition time The user can stop or interrupt the test sequence at any time during this period by pressing...

Страница 23: ...p to zero A new test cannot be started until the button is reset Release of the emergency button clears the message Low Current Flow This message appears if instrument cannot reach specified current o...

Страница 24: ...he test Internal Temp High The DRM 100 has high temperature internal protection Inside the case are two types of fans One internal fan works only if the internal temperature rises over 25 C The second...

Страница 25: ...Chapter 2 Getting to Know the DRM 100 Page 16...

Страница 26: ...Horizontal mounting will allow easy access to the front panel for reading and adjusting Be sure not to block the ventilation openings on the rear edge of the front panel Protect front panel from mois...

Страница 27: ...tacts remain closed throughout the test When making connections to a device it is very important that the surface contacts be as clean as possible If the readings during the test appear erratic rechec...

Страница 28: ...ns must be electrically within the current lead connections Starting the DRM 100 Turn on the power switch A welcome window appears with the DRM 100 logo It also displays the company address details al...

Страница 29: ...p to 60 seconds in increments of one second If the user presses the up arrow button the time value will increase up to 60s or enter a continuous mode infinite symbol and loop back to 10s and so on If...

Страница 30: ...n the DRM 100 and connect the large alligator clamps to the terminals of the EUT Connect the potential leads to the voltage input sockets on the DRM 100 and connect the small alligator clamps to the s...

Страница 31: ...ermine the resistance of the section between the potential leads Although the DRM 100 is capable of measuring resistance with several hundred volts of common mode noise on the current outputs and volt...

Страница 32: ...ust the time to infinity symbol Press the START STOP test start button The DRM 100 will ramp up the current to the selected test current in 2 3 seconds and then hold the current until the operator pre...

Страница 33: ...ent 20A Test Time From 10s to 60s in 1s steps 10 100A Infinite test time at 20A Ramp time 2 to 3 seconds related with selected current and load Resistance Measurement One auto ranging channel Resistan...

Страница 34: ...m 2 awg 65 20m 2 awg Maximum 15 m at 100A Housing Rugged waterproof case IP 67 Weight Test Instrument 9 kg 20 lb excluding leads Dimension Test Instrument 47 cm x 35 7 cm x 17 6 cm 18 x 14 x 6 15 16 i...

Страница 35: ...Certificate Page 26 CE Declaration of Conformity Appendix B...

Страница 36: ...roduction Options All Conforms to the following Directives through compliance to standard Electromagnetic Compatibility Council Directive 2004 108 EC EN 61326 1 1997 Class A Safety Council Directive 7...

Страница 37: ...tinuous Resistance Test 10 Conventional Mode 21 Current Receptacles 6 Current versus Resistance Ranges 11 Customer Service ix D Dimension 25 Down Arrow button 6 E Emergency Stop Button 7 Environmental...

Страница 38: ...s 12 R Ramp time 24 Resistance Displays 9 Resistance Measurement24 resistance ranges 10 Resistance Ranges 24 Resolution 24 Ripple 24 S Safety built in safety precautions vii high voltage safety vi pow...

Страница 39: ...Appendix C Index Page 30 U Up Arrow button 5 V Voltage Receptacles 6 W Warning messages 12 14 Weight 25...

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