METREL MI 3200 User Manual Download

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TeraOhm 10 kV

MI 3200

User Manual

Version 4.0; Code No. 20 751 097

Summary of Contents for MI 3200

Page 1: ...TeraOhm 10 kV MI 3200 User Manual Version 4 0 Code No 20 751 097...

Page 2: ...http www metrel si Mark on your equipment certifies that this equipment meets the requirements of the EU European Union concerning safety and interference causing equipment regulations 2015 Metrel No...

Page 3: ...ion 10 4 2 1 Configuration 11 4 2 2 Setup 12 5 Measurements 14 5 1 Generally Information about High DC voltage testing 14 5 2 Guard terminal 17 5 3 Filter options 18 5 4 Voltage measurement 19 5 5 Ins...

Page 4: ...voltage range Programmable timer 1 min up to 30 min per step Polarization Index PI Dielectric Absorption ratio DAR and Dielectric Discharge DD ratio PI RINS t2 RINS t1 DAR R1min R15s DD Idis1min C U W...

Page 5: ...ecifications 2 2 Operator s Panel The operator s panel is shown in the figure below Fig 1 Fig 1 Front panel Use original test accessories only Max allowed external voltage between test terminals and g...

Page 6: ...stance test terminal OUT 15 Screw unscrew to replace the batteries 16 Galvanic separated USB connector to connect the instrument to PC 17 Distributor label or could be blank 18 Galvanic separated RS 2...

Page 7: ...ielded 2 4 2 High voltage shielded test leads with High voltage alligator clips Application notes These test leads is designed for diagnostic testing of insulation Insulation ratings High voltage bana...

Page 8: ...risk of electric shock while dealing with hazardous voltages Do not connect the test equipment to a mains voltage different from the one defined on the label adjacent to the mains connector otherwise...

Page 9: ...est equipment In rare cases internal fault the test equipment can behave in an uncontrolled manner LCD blinking freezing not responding to keys etc In this case consider the test equipment and the tes...

Page 10: ...nd instrument is ready for normal operation Auto calibration prevents the reduction in accuracy when measuring very low currents It compensates the effects caused by ageing temperature and humidity ch...

Page 11: ...easuring mode When the instrument is performing a test Backlight operation battery powered instrument After turning the instrument ON the LCD backlight is automatically turned ON It can be turned OFF...

Page 12: ...IC TEST functions according to the nominal voltage Unominal See additional explanation in chapter 5 6 Table 1a Parameters in Configuration menu 4 2 2 Setup The setup function enables the selection and...

Page 13: ...LCD contrast Time Set real time hour minute Date Set current date day month year Com Port RS 232 2400 RS 232 4800 RS 232 9600 RS 232 19200 USB 115000 Set communication mode and rate Language Set langu...

Page 14: ...ests In this type of test the voltage is defined by the appropriate product application group This voltage is lower than the voltage used in the withstanding voltage test so the tests can be applied m...

Page 15: ...tance Ciso to be charged up Sometimes it is required to take ambient temperature into account and adjust the result for a standard temperature of 40 C If surface leakage currents interfere with the me...

Page 16: ...s not always valid Refer to Metrel s handbook Insulation Testing Techniques for more information General applicable values PI value Tested material status 1 to 1 5 Not acceptable older types 2 to 4 ty...

Page 17: ...1 2120 V Humidity and insulation resistance measurements When testing outside the reference ambient conditions the quality of the insulation resistance measurements can be affected by humidity Humidi...

Page 18: ...ment has two guard terminals to allow easy connection of shielded measuring leads 5 3 Filter options Filters are built in to reduce the influence of noise on measurement results This option enables mo...

Page 19: ...point is to filter the measured current Note Any of the selected filter options increases the settling time with Fil1 to 60 s Fil2 to 70 s and Fil3 to 120 s It is necessary to pay close attention to t...

Page 20: ...states initial state and state with results after the completion of the measurement The Fig 10 shows states when Graph R t is disabled Initial display Display with results Fig 10 Insulation Resistance...

Page 21: ...of selected function Off fil0 Fil1 Fil2 Fil3 Filter type enabled see the chapter 5 3 Configuration 5000V Set test voltage U 5323V Actual test voltage measured value I 266nA Actual test current measure...

Page 22: ...er 5min 00s Duration of the measurement Timer on off ON ON timer enabled OFF timer disabled Time1 01min 00s Time to accept and display first Rmin and Rmax results Graph R t ON Enable Disable Graph R t...

Page 23: ...of Graph R t is equal to the value of Timer The Timer value could be very long up to 100 minutes so the Special automatic decimation algorithm is use to write the Graph R t to the LCD The cursors of...

Page 24: ...t disabled The Fig 16 shows states when Graph R t is enabled When Graph R t is enabled you can simple switching initial state and state with results after the completion of the measurement between nu...

Page 25: ...ed up in the first time section 15s Approximate maximum capacitance using V s F U t C 10 3 max where t period of first time unit e g 15s U test voltage To avoid this problem increase the DIAG Starting...

Page 26: ...useful maintenance tests of an insulating material DIELECTRIC DISCHARGE TESTING DD DD is the diagnostic insulation test carried out after the completion of the Insulation Resistance measurement Typic...

Page 27: ...R10min 10 5G Resistance value measured after set time 3 DAR 1 67 DAR as ratio of R1min R15s PI 1 21 PI as ratio of R03 R02 DD __ DD result Notes A high voltage warning symbol appears on the display d...

Page 28: ...Fig 18 shows the timer relationships 0 Time1 Time2 Time3 t Start R15s R01min DAR R03min PI Stop if enabled DD Time1 Time2 Time2 Time3 Fig 18 Timer relations Enable Disable the graph R t and Set up th...

Page 29: ...alue of Timer 3 The Timer value could be very long up to 100 minutes so the Special automatic decimation algorithm is use to write the Graph R t to the LCD The cursors of the Graph R t could be activa...

Page 30: ...t enabled The Fig 22 shows states when Graph R t is enabled When Graph R t is enabled you can simple switching initial state and state with results after the completion of the measurement between nume...

Page 31: ...arge The results can be saved by pressing the MEM key twice see the chapter 6 1 Store Recall and Clear Operation 0 0 2U 0 4U 0 6U 0 8U U U T 2T 3T 4T 5T t Fig 23 Step up test voltage Legend of display...

Page 32: ...parameter adjustments by pressing either the ESC or the START STOP key to run the measurement directly The settings displayed last will be saved Fig 24 Set up menu in Step Voltage Test Legend of disp...

Page 33: ...age testing of high voltage device e g transient suppressors and b DC withstanding voltage test for insulation coordination purposes Both functions require breakdown current detection The test voltage...

Page 34: ...I 0 002mA Actual test current measured value tm 01min 00s Timer information Measuring procedure Connect the test leads to the instrument and to the measured object Press the START STOP key to start t...

Page 35: ...lect the parameter line to be set using the and keys Adjust the parameter using the and keys or skip to the next sub parameter by pressing the SELECT key Complete the parameter adjustments by pressing...

Page 36: ...key If graph R t is enabled in the measurement it will be automatically saved with the measurement To recall stored result Highlight RCL and confirm by pressing the MEM key The last stored result will...

Page 37: ...er of stored result Date Time Diagnostic test Function name Last measured insulation resistance Set test voltage Actual test voltage measured value Actual test current measured value Capacitance of th...

Page 38: ...2 Transferring Data to a PC Stored results can be transferred to a PC A special communication program TeraLink PRO has the ability to identify the instrument and download the data How to transfer the...

Page 39: ...ns and at end the middle batteries The battery cover has to be placed and fixed back Connect the instrument to the mains power supply for 20 hours to fully charge batteries Typical charging current is...

Page 40: ...hen the others see the Fig 31 Insert the batteries correctly see Fig 31 otherwise the test instrument will not operate and battery may be discharged To easy insert batteries to battery holder first in...

Page 41: ...or hydrocarbons Do not spill cleaning liquid over the instrument 7 4 Calibration It is essential that all measurement instruments be regularly calibrated For occasional daily use we recommend an annu...

Page 42: ...digits 1 00 9 99 M 10 k 10 0 99 9 M 100 k 100 999 M 1 M 1 00 9 99 G 10 M 10 0 99 9 G 100 M 100 999 G 1 G 1 00 10 00 T 10 G 15 of reading 3 digits Full scale value of insulation resistance is defined...

Page 43: ...01 5 of reading 2digits 10 0 100 0 0 1 5 of reading Polarization index PI Display range PI Resolution Accuracy 0 01 9 99 0 01 5 of reading 2 digits 10 0 100 0 0 1 5 of reading Dielectric discharge te...

Page 44: ...009 1 A 3 of reading 3 digits 0 01 5 50 10 A 3 of reading Voltage Voltage AC or DC Display range External Voltage V Resolution Accuracy 0 600 1 V 3 of reading 4 V Frequency of external voltage Displa...

Page 45: ...e temperature range 10 30 C Storage temperature range 20 70 C Maximum humidity 90 RH 0 40 C non condensing Nominal reference humidity range 40 60 RH Working nominal altitude up to 3000m Storage nomina...

Page 46: ...MI 3200 TeraOhm 10 kV Specifications 46 CLOCK Built in Real time clock Displayed permanently and stored as a parameter in combination with the result...

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METREL MI 3200, User Manual

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