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Metrel MI 3121H SMARTEC 2.5 kV Manual

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MI 3121H Smartec 2,5 kV Insulation / Continuity Table of contents
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1 Preface.........................................................................................................................5
2 Safety and operational considerations.....................................................................6
2.1 Warnings and notes...............................................................................................6
2.2 Battery and charging .............................................................................................8
2.2.1 New battery cells or cells unused for a longer period.....................................9
2.2.2 Auto Power Off...............................................................................................9
2.3 Standards applied................................................................................................10
3 Instrument description.............................................................................................11
3.1 Front panel ..........................................................................................................11
3.2 Connector panel ..................................................................................................12
3.3 Back panel...........................................................................................................13
3.4 Display organization ............................................................................................14
3.4.1 Function field................................................................................................14
3.4.2 Result fields..................................................................................................14
3.4.3 Message field ...............................................................................................15
3.4.4 Auxiliary monitor...........................................................................................15
3.4.5 Battery indication..........................................................................................16
3.4.6 Other messages...........................................................................................16
3.4.7 Backlight.......................................................................................................16
3.5 Instrument set and accessories...........................................................................17
3.5.1 Standard set.................................................................................................17
3.5.2 Optional accessories....................................................................................17
4 Instrument operation................................................................................................18
4.1 Function selection................................................................................................18
4.2 Settings ...............................................................................................................19
4.2.1 Initial settings................................................................................................19
4.2.2 Date and time...............................................................................................20
5 Measurements ..........................................................................................................21
5.1 Insulation resistance............................................................................................21
5.1.1 Insulation resistance measuring procedure..................................................21
5.1.2 The DAR and PI diagnostic ..........................................................................23
5.1.3 Guard terminal..............................................................................................24
5.2 Resistance of earth connection and equipotential bonding .................................26
5.2.1 RLOW, 200 mA resistance measurement....................................................26
5.2.2 Continuous 7 mA resistance measurement CONT.......................................27
5.2.3 Compensation of test leads resistance.........................................................29
5.3 Voltage and frequency.........................................................................................30
6 Data handling............................................................................................................32
6.1 Memory organization...........................................................................................32
6.2 Data structure......................................................................................................32
6.3 Storing test results...............................................................................................33
6.4 Recalling test results ...........................................................................................33
6.5 Clear / recall options............................................................................................34
6.5.1 Clearing complete memory content..............................................................34
6.5.2 Clearing individual results at selected location.............................................35
6.6 Communication....................................................................................................36
7 Maintenance..............................................................................................................37
7.1 Fuse replacement................................................................................................37
7.2 Cleaning ..............................................................................................................37
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