METREL MI 2893 User manual

Power Master XT / Power Master / Master Q4
MI 2893 / MI 2892 / MI 2885
(HW: 9.0)
Instruction manual
Version 1.4.8 Code No. 20 753 179

2
Distributor:
Manufacturer:
Metrel d.d.
Ljubljanska cesta 77
SI-1354 Horjul
Slovenia
https://www.metrel.si
[email protected]
DATA BACKUP AND LOSS:
It is the user’s responsibility to ensure the integrity and security of the data carrier (SD card) and to
regularly backup and validate the integrity of backups of the data. METREL HAS NO OBLIGATION OR
LIABILITY FOR ANY LOSS, ALTERATION, DESTRUCTION, DAMAGE, CORRUPTION OR RECOVERY OF USER
DATA, REGARDLESS OF WHERE THE DATA IS STORED.
Mark on your equipment certifies that it meets requirements of all subjected EU regulations.
Hereby, Metrel d.d. declares that the MI 2893, MI 2892, MI 2885 is in compliance with
subjected EU directive. The full text of the EU declaration of conformity is available at the
following internet address https://www.metrel.si/DoC.
© 2022 METREL
The trade names Metrel®, Smartec®, Eurotest®, Auto Sequence®are trademarks registered in Europe and other countries.
No part of this publication may be reproduced or utilized in any form or by any means without
permission in writing from METREL.

MI 2893 / MI 2892 / MI 2885 Table of contents
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1Introduction ............................................................................................................................14
1.1 Main Features .........................................................................................................................15
1.2 Safety considerations ..............................................................................................................16
1.3 Applicable standards ...............................................................................................................17
1.4 Abbreviations..........................................................................................................................18
2Description..............................................................................................................................28
2.1 Front panel..............................................................................................................................28
2.2 Connector panel ......................................................................................................................29
2.3 Bottom view............................................................................................................................30
2.4 Accessories..............................................................................................................................30
2.4.1 Standard accessories.............................................................................................................30
2.4.2 Optional accessories .............................................................................................................30
3Operating the instrument ........................................................................................................31
3.1Instrument status bar ..............................................................................................................32
3.2 Instrument keys.......................................................................................................................33
3.3 Instrument memory (microSD card) .........................................................................................34
3.4 Instrument Main Menu............................................................................................................34
3.4.1 Instrument submenus...........................................................................................................35
3.5 U, I, f .......................................................................................................................................37
3.5.1 Meter.....................................................................................................................................37
3.5.2 Scope.....................................................................................................................................39
3.5.3 Trend .....................................................................................................................................41
3.5.4 Voltage and current trends...................................................................................................41
3.6 Power .....................................................................................................................................44
3.6.1 Meter.....................................................................................................................................44
3.6.2 Trend .....................................................................................................................................47
3.7 Energy.....................................................................................................................................50
3.7.1 Meter.....................................................................................................................................50
3.7.2 Trend .....................................................................................................................................52
3.7.3 Efficiency ...............................................................................................................................53
3.8 Harmonics / inter-harmonics ...................................................................................................55
3.8.1 Meter.....................................................................................................................................55
3.8.2 Histogram (Bar) .....................................................................................................................57
3.8.3 Harmonics Average Histogram (Avg Bar)..............................................................................58
3.8.4 Trend .....................................................................................................................................60
3.9 Flickers....................................................................................................................................62
3.9.1 Meter.....................................................................................................................................62
3.9.2 Trend .....................................................................................................................................63
3.10 Phase Diagram ........................................................................................................................64
3.10.1 Phase diagram...................................................................................................................64
3.10.2 Unbalance diagram...........................................................................................................65
3.10.3 Unbalance trend ...............................................................................................................66
3.11 Temperature ...........................................................................................................................67
3.11.1 Meter ................................................................................................................................68
3.11.2 Trend.................................................................................................................................68
3.12 Under deviation and over deviation.........................................................................................69
3.12.1 Meter ................................................................................................................................69

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3.12.2 Trend.................................................................................................................................70
3.13 Signalling.................................................................................................................................71
3.13.1 Meter ................................................................................................................................71
3.13.2 Trend.................................................................................................................................72
3.13.3 Table .................................................................................................................................73
3.14 General Recorder.....................................................................................................................74
3.15 Waveform/Inrush recorder......................................................................................................77
3.15.1 Setup.................................................................................................................................78
3.15.2 Capturing waveform .........................................................................................................79
3.15.3 Captured waveform..........................................................................................................82
3.16 Transient recorder...................................................................................................................84
3.16.1 Power Master XT - MI 2893..............................................................................................84
3.16.1.1 Setup.................................................................................................................................84
3.16.2 Power Master/Master Q4 - MI 2892/MI 2885 .................................................................87
3.16.2.1 Setup.................................................................................................................................87
3.16.3 Capturing transients .........................................................................................................89
3.16.4 Captured transients ..........................................................................................................91
3.17 Events table.............................................................................................................................92
3.17.1 Group view........................................................................................................................92
3.17.2 Phase view ........................................................................................................................94
3.18 Alarms table............................................................................................................................96
3.19 Rapid voltage changes (RVC) table ...........................................................................................98
3.20 Inrush table.............................................................................................................................99
3.21 E-Meter recorder (MI 2892/MI 2885) ..................................................................................... 100
3.22 Memory List .......................................................................................................................... 105
3.22.1 General Record ...............................................................................................................108
3.22.2 Waveform snapshot........................................................................................................111
3.22.3 Waveform/inrush record................................................................................................112
3.22.4 Transients record............................................................................................................112
3.23 Measurement Setup submenu ............................................................................................... 113
3.23.1 Connection setup............................................................................................................113
3.23.2 Event setup .....................................................................................................................118
3.23.3 Alarm setup.....................................................................................................................120
3.23.4 Signalling setup...............................................................................................................121
3.23.5 Rapid voltage changes (RVC) setup ................................................................................122
3.23.6 Measuring Methods setup..............................................................................................123
3.23.7 Transient setup...............................................................................................................124
3.24 General Setup submenu......................................................................................................... 125
3.24.1 Communication...............................................................................................................126
3.24.2 Time & Date....................................................................................................................127
3.24.3 Language.........................................................................................................................129
3.24.4 Instrument info...............................................................................................................129
3.24.5 Lock/Unlock ....................................................................................................................130
3.24.6 Colour model ..................................................................................................................132
3.24.7 Backlight..........................................................................................................................133
4Recording Practice and Instrument Connection ...................................................................... 135
4.1 Measurement campaign ........................................................................................................ 135
4.2 Connection setup................................................................................................................... 141
4.2.1 Connection to the LV Power Systems.................................................................................141

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4.2.2 Connection to the MV or HV Power System.......................................................................146
4.2.3 Current clamp selection and transformation ratio setting .................................................150
4.2.4 Connection check................................................................................................................154
4.2.5 Temperature probe connection..........................................................................................156
4.2.6 GPS time synchronization device connection.....................................................................157
4.3 Remote instrument connection (over Internet / Internet(3G/GPRS) / Intranet (LAN)).............. 158
4.3.1 Communication principle....................................................................................................158
4.3.2 Instrument setup on remote measurement site ................................................................159
4.3.3 PowerView setup for instrument remote access................................................................160
4.3.4 Remote connection.............................................................................................................161
4.4 Number of measured parameters and connection type relationship ....................................... 172
5Theory and internal operation ............................................................................................... 179
5.1 Measurement methods ......................................................................................................... 179
5.1.1 Measurement aggregation over time intervals ..................................................................179
5.1.2 Voltage measurement (magnitude of supply voltage) .......................................................179
5.1.3 Current measurement (magnitude of supply current) .......................................................180
5.1.4 Frequency measurement....................................................................................................181
5.1.5 Modern Power measurement.............................................................................................181
5.1.6 Classic Vector and Arithmetic Power measurement ..........................................................186
5.1.7 Energy..................................................................................................................................189
5.1.8 Harmonics and interharmonics...........................................................................................190
5.1.9 Signalling .............................................................................................................................192
5.1.10 Flicker..............................................................................................................................193
5.1.11 Voltage and current unbalance ......................................................................................193
5.1.12 Under-deviation and over-deviation ..............................................................................194
5.1.13 Voltage events ................................................................................................................195
5.1.14 Alarms.............................................................................................................................198
5.1.15 Rapid voltage changes (RVC) ..........................................................................................199
5.1.16 Data aggregation in GENERAL RECORDING....................................................................200
5.1.17 Flagged data....................................................................................................................204
5.1.18 Waveform snapshot........................................................................................................204
5.1.19 Waveform recorder ........................................................................................................204
5.1.20 Transient recorder ..........................................................................................................208
5.2 EN 50160 Standard Overview................................................................................................. 209
5.2.1 Power frequency.................................................................................................................210
5.2.2 Supply voltage variations ....................................................................................................210
5.2.3 Supply voltage unbalance ...................................................................................................210
5.2.4 THD voltage and harmonics ................................................................................................210
5.2.5 Interharmonic voltage.........................................................................................................211
5.2.6 Mains signalling on the supply voltage...............................................................................211
5.2.7 Flicker severity ....................................................................................................................211
5.2.8 Voltage dips.........................................................................................................................211
5.2.9 Voltage swells......................................................................................................................212
5.2.10 Short interruptions of the supply voltage.......................................................................212
5.2.11 Long interruptions of the supply voltage........................................................................212
5.2.12 MI 2893/MI 2892/MI 2885 recorder setting for EN 50160 survey.................................212
6Technical specifications ......................................................................................................... 214
6.1 General specifications............................................................................................................ 214
6.2 Measurements ...................................................................................................................... 214
6.2.1 General description.............................................................................................................214

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6.2.2 Phase Voltages ....................................................................................................................216
6.2.3 Line voltages........................................................................................................................216
6.2.4 Current ................................................................................................................................218
6.2.5 Frequency............................................................................................................................221
6.2.6 Flickers.................................................................................................................................221
6.2.7 Transients............................................................................................................................221
6.2.8 Combined power.................................................................................................................222
6.2.9 Fundamental power............................................................................................................222
6.2.10 Nonfundamental power .................................................................................................223
6.2.11 Power factor (PF, PFe, PFv, PFa) .....................................................................................224
6.2.12 Displacement factor (DPF) or Cos φ) ..............................................................................224
6.2.13 Energy .............................................................................................................................224
6.2.14 Voltage harmonics and THD ...........................................................................................225
6.2.15 Current harmonics, THD and k-factor.............................................................................225
6.2.16 Voltage interharmonics ..................................................................................................226
6.2.17 Current interharmonics ..................................................................................................226
6.2.18 Signalling.........................................................................................................................227
6.2.19 Unbalance.......................................................................................................................227
6.2.20 Overdeviation and Underdeviation ................................................................................227
6.2.21 Time and duration uncertainty.......................................................................................227
6.2.22 Temperature probe ........................................................................................................227
6.2.23 Phase angle.....................................................................................................................228
6.2.24 400Hz systems specification...........................................................................................228
6.2.25 VFD (Variable frequency drive) systems specification....................................................228
6.2.26 Differences in specification between 400Hz, VFD and 50/60 Hz systems......................228
6.3 Recorders.............................................................................................................................. 229
6.3.1 General recorder.................................................................................................................229
6.3.2 Waveform/inrush recorder.................................................................................................230
6.3.3 Waveform snapshot............................................................................................................230
6.3.4 Transient recorder...............................................................................................................230
6.4 Standards compliance............................................................................................................ 232
6.4.1 Compliance to the IEC 61557-12.........................................................................................232
6.4.2 Compliance to the to the IEC 61000-4-30...........................................................................233
7Maintenance ......................................................................................................................... 234
7.1 Inserting batteries into the instrument................................................................................... 234
7.2 Batteries ............................................................................................................................... 235
7.3 Firmware upgrade ................................................................................................................. 236
7.3.1 Requirements......................................................................................................................236
7.3.2 Upgrade procedure.............................................................................................................237
7.4 Power supply considerations ................................................................................................. 240
7.5 Cleaning ................................................................................................................................ 240
7.6 Periodic calibration................................................................................................................ 241
7.7 Service .................................................................................................................................. 241
7.8 Troubleshooting .................................................................................................................... 241
8Version of document ............................................................................................................. 241
List of tables:

MI 2893 / MI 2892 / MI 2885 Table of contents
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Table 1: MI 2893/MI 2892/MI 2885 standard accessories.........................................................................30
Table 2: Instrument status bar description.................................................................................................32
Table 3: Shortcut Keys and other Function keys.........................................................................................33
Table 4: Instrument Main menu .................................................................................................................35
Table 5: Keys in Main menu........................................................................................................................35
Table 6: Keys in submenus..........................................................................................................................37
Table 7: Instrument screen symbols and abbreviations.............................................................................38
Table 8: Keys in Meter screens ...................................................................................................................39
Table 9: Instrument screen symbols and abbreviations.............................................................................40
Table 10: Keys in Scope screens..................................................................................................................40
Table 11: Instrument screen symbols and abbreviations...........................................................................42
Table 12: Keys in Trend screens..................................................................................................................42
Table 13: Instrument screen symbols and abbreviations (see 5.1.5 for details) –instantaneous values..45
Table 14: Keys in Power (METER) screens ..................................................................................................46
Table 15: Instrument screen symbols and abbreviations...........................................................................47
Table 16: Keys in Power (TREND) screens ..................................................................................................48
Table 17: Instrument screen symbols and abbreviations...........................................................................51
Table 18: Keys in Energy (METER) screens .................................................................................................51
Table 19: Instrument screen symbols and abbreviations...........................................................................52
Table 20: Keys in Energy (TREND) screens..................................................................................................52
Table 21: Instrument screen symbols and abbreviations...........................................................................53
Table 22: Keys in Energy (TREND) screens..................................................................................................54
Table 23: Instrument screen symbols and abbreviations...........................................................................55
Table 24: Keys in Harmonics / inter-harmonics (METER) screens..............................................................56
Table 25: Instrument screen symbols and abbreviations...........................................................................57
Table 26: Keys in Harmonics / inter-harmonics (BAR) screens...................................................................57
Table 27: Instrument screen symbols and abbreviations...........................................................................59
Table 28: Keys in Harmonics / inter-harmonics (AVG) screens ..................................................................59
Table 29: Instrument screen symbols and abbreviations...........................................................................60
Table 30: Keys in Harmonics / inter-harmonics (TREND) screens ..............................................................61
Table 31: Instrument screen symbols and abbreviations...........................................................................62
Table 32: Keys in Flickers (METER) screen..................................................................................................62
Table 33: Instrument screen symbols and abbreviations...........................................................................63
Table 34: Keys in Flickers (TREND) screens.................................................................................................63
Table 35: Instrument screen symbols and abbreviations...........................................................................65
Table 36: Keys in Phase diagram screen.....................................................................................................65
Table 37: Instrument screen symbols and abbreviations...........................................................................66
Table 38: Keys in Unbalance diagram screens............................................................................................66
Table 39: Instrument screen symbols and abbreviations...........................................................................67
Table 40: Keys in Unbalance trend screens ................................................................................................67
Table 41: Instrument screen symbols and abbreviations...........................................................................68
Table 42: Keys in Temperature meter screen.............................................................................................68
Table 43: Instrument screen symbols and abbreviations...........................................................................68
Table 44: Keys in Temperature trend screens ............................................................................................69
Table 45: Instrument screen symbols and abbreviations...........................................................................69
Table 46: Keys in Under deviation and over deviation (METER) screen.....................................................69
Table 47: Instrument screen symbols and abbreviations...........................................................................70
Table 48: Keys in Under deviation and Over deviation (TREND) screens...................................................70
Table 49: Instrument screen symbols and abbreviations...........................................................................71
Table 50: Keys in Signalling (METER) screen...............................................................................................72
Table 51: Instrument screen symbols and abbreviations...........................................................................72

MI 2893 / MI 2892 / MI 2885 Table of contents
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Table 52: Keys in Signalling (TREND) screen...............................................................................................72
Table 53: Instrument screen symbols and abbreviations...........................................................................73
Table 54: Keys in Signalling (TABLE) screen................................................................................................74
Table 55: General recorder settings description and screen symbols........................................................75
Table 56: Keys in General recorder setup screen .......................................................................................76
Table 57: Waveform recorder settings description and screen symbols ...................................................78
Table 58: Keys in Waveform recorder setup screen...................................................................................79
Table 59: Instrument screen symbols and abbreviations...........................................................................81
Table 60: Keys in Waveform recorder capture screen ...............................................................................81
Table 61: Instrument screen symbols and abbreviations...........................................................................82
Table 62: Keys in captured waveform recorder screens ............................................................................82
Table 63: Transients on the low voltage network ......................................................................................84
Table 64: Transient recorder settings description and screen symbols.....................................................85
Table 65: Keys in Transient recorder setup screen.....................................................................................86
Table 66: Transient recorder settings description and screen symbols.....................................................87
Table 67: Keys in Transient recorder setup screen.....................................................................................88
Table 68: Instrument screen symbols and abbreviations...........................................................................90
Table 69: Keys in Transient recorder capture screen .................................................................................90
Table 70: Instrument screen symbols and abbreviations...........................................................................91
Table 71: Keys in captured transient recorder screens ..............................................................................91
Table 72: Instrument screen symbols and abbreviations...........................................................................93
Table 73: Keys in Events table group view screens.....................................................................................93
Table 74: Instrument screen symbols and abbreviations...........................................................................95
Table 75: Keys in Events table phase view screens ....................................................................................95
Table 76: Instrument screen symbols and abbreviations...........................................................................97
Table 77: Keys in Alarms table screens.......................................................................................................97
Table 78: Instrument screen symbols and abbreviations...........................................................................98
Table 79: Keys in RVC Events table group view screens.............................................................................99
Table 80: Instrument screen symbols and abbreviations...........................................................................99
Table 81: E-Meter recorder settings description......................................................................................101
Table 82: Functional Keys in E-Meter recorder setup screen...................................................................102
Table 83: E-Meter recorder setup settings description............................................................................103
Table 84: Instrument screen symbols and abbreviations.........................................................................105
Table 85: Keys in Memory list (Folder) screen..........................................................................................105
Table 86: Instrument screen symbols and abbreviations.........................................................................106
Table 87: Keys in Memory list screen .......................................................................................................107
Table 88: Recorder settings description ...................................................................................................108
Table 89: Keys in General record front page screen.................................................................................108
Table 90: Instrument screen symbols and abbreviations.........................................................................109
Table 91: Keys in Viewing recorder U,I,f TREND screens..........................................................................110
Table 92: Recorder settings description ...................................................................................................111
Table 93: Keys in Snapshot record front page screen ..............................................................................111
Table 94: Description of Measurement setup options.............................................................................113
Table 95: Keys in Measurement setup submenu screen..........................................................................113
Table 96: Description of Connection setup...............................................................................................114
Table 97: Keys in Connection setup menu................................................................................................118
Table 98: Description of Event setup........................................................................................................119
Table 99: Keys in Event setup screen........................................................................................................119
Table 100: Description of Alarm setup .....................................................................................................120
Table 101: Keys in Alarm setup screens....................................................................................................121
Table 102: Description of Signalling setup................................................................................................121
Table 103: Keys in Signalling setup screen ...............................................................................................122

MI 2893 / MI 2892 / MI 2885 Table of contents
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Table 104: Description of RVC setup ........................................................................................................122
Table 105: Keys in RVC setup screen ........................................................................................................122
Table 106: Description of Measuring Methods setup ..............................................................................123
Table 107: Keys in Measuring Methods setup screen..............................................................................124
Table 108: Description of Transient setup................................................................................................125
Table 109: Description of General setup options .....................................................................................126
Table 110: Keys in General setup submenu..............................................................................................126
Table 111: Description of Communication setup options ........................................................................127
Table 112: Keys in Communication setup.................................................................................................127
Table 113: Description of Set date/time screen.......................................................................................128
Table 114: Keys in Set date/time screen ..................................................................................................128
Table 115: Keys in Language setup screen ...............................................................................................129
Table 116: Description of Instrument info screen....................................................................................130
Table 117: Keys in Instrument info screen................................................................................................130
Table 118: Description of Lock/Unlock screen .........................................................................................131
Table 119: Keys in Lock/Unlock screen.....................................................................................................131
Table 120: Locked instrument functionality.............................................................................................131
Table 121: Keys in Colour model screens .................................................................................................132
Table 122: Description Backlight screen...................................................................................................133
Table 123: Keys in Backlight screen..........................................................................................................134
Table 124: Keys in Smart clamps pop up window ....................................................................................153
Table 125: Connection check description and screen symbols ................................................................154
Table 126: Keys in Connection check screen............................................................................................156
Table 127: GPS functionality.....................................................................................................................157
Table 128: Keys in Set time zone screen...................................................................................................157
Table 129: Internet setup parameters......................................................................................................160
Table 130: Internet status bar icons .........................................................................................................160
Table 131: Instrument selection form parameters...................................................................................161
Table 132: Quantities measured by instrument.......................................................................................172
Table 133: Quantities recorded by instrument (Standard Profile)...........................................................174
Table 134: Quantities recorded by instrument (Limited Profile)..............................................................177
Table 135: Summary and grouping of the phase power quantities .........................................................182
Table 136: Power summary and grouping of the total power quantities ................................................182
Table 137: Summary and grouping of the phase power quantities .........................................................187
Table 138: Power summary and grouping of the total power quantities ................................................187
Table 139: Alarm definition parameters...................................................................................................199
Table 140: Alarm signatures .....................................................................................................................199
Table 141: Data aggregation methods......................................................................................................201
Table 142: EN 50160 standard LV limits (continuous phenomena) .........................................................209
Table 143: Values of individual harmonic voltages at the supply ............................................................210
Table 144:Voltage dips classification........................................................................................................211
Table 145:Voltage swell classification ......................................................................................................212
Table 146: General recording max. duration............................................................................................229

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List of Figures:
Figure 1: Power Master XT instrument.......................................................................................................14
Figure 2: Front plates and marking labels...................................................................................................15
Figure 3: Front panel...................................................................................................................................28
Figure 4:Top connector panel.....................................................................................................................29
Figure 5: Side connector panel ..................................................................................................................29
Figure 6: Bottom view.................................................................................................................................30
Figure 7: Display symbols and keys description..........................................................................................31
Figure 8: Common display symbols and labels during measurement campaign .......................................31
Figure 9: Instrument status bar ..................................................................................................................32
Figure 10: Inserting microSD card...............................................................................................................34
Figure 11: “MAIN MENU” ...........................................................................................................................35
Figure 12: Measurements submenu...........................................................................................................36
Figure 13: Recorders submenu (MI 2893) ..................................................................................................36
Figure 14: Recorders submenu (MI 2892/MI 2885)) ..................................................................................36
Figure 15: Measurement setup submenu...................................................................................................36
Figure 16: General setup submenu.............................................................................................................37
Figure 17: U, I, f meter phase table screens (L1, L2, L3, N).........................................................................37
Figure 18: U, I, f meter summary table screens..........................................................................................38
Figure 19: Voltage only waveform..............................................................................................................39
Figure 20: Current only waveform..............................................................................................................39
Figure 21: Voltage and current waveform (single mode)...........................................................................40
Figure 22: Voltage and current waveform (dual mode) .............................................................................40
Figure 23: Voltage trend (all voltages)........................................................................................................41
Figure 24: Voltage trend (single voltage)....................................................................................................41
Figure 25: Voltage and current trend (single mode) ..................................................................................41
Figure 26: Voltage and current trend (dual mode).....................................................................................41
Figure 27: Trends of all currents.................................................................................................................42
Figure 28: Frequency trend.........................................................................................................................42
Figure 29: Power measurements summary (combined) ............................................................................44
Figure 30: Power measurements summary (nonfundamental) .................................................................44
Figure 31: Power measurements summary (fundamental)........................................................................44
Figure 32: Detailed power measurements at phase L1..............................................................................45
Figure 33: Detailed total power measurements.........................................................................................45
Figure 34: Power trend screen....................................................................................................................47
Figure 35: Energy counters screen (General Recorder is running).............................................................50
Figure 36: Energy counters screen (General Recorder is not running).......................................................51
Figure 37: Energy trend screen...................................................................................................................52
Figure 38: Energy efficiency screen ............................................................................................................53
Figure 39: Harmonics and inter-harmonics (METER) screens ....................................................................55
Figure 40: Phase harmonics presentation (U,I,P) .......................................................................................55
Figure 41: Harmonics histogram screen .....................................................................................................57
Figure 42: Harmonics average histogram screen .......................................................................................59
Figure 43: Harmonics and inter-harmonics trend screen...........................................................................60
Figure 44: Flickers table screen...................................................................................................................62
Figure 45: Flickers trend screen..................................................................................................................63
Figure 46: Phase diagram screen................................................................................................................65
Figure 47: Unbalance diagram screen ........................................................................................................65
Figure 48: Symmetry trend screen .............................................................................................................66
Figure 49: Temperature meter screen........................................................................................................68
Figure 50: Temperature trend screen.........................................................................................................68

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Figure 51: Under deviation and over deviation table screen .....................................................................69
Figure 52: Under-deviation and over-deviation TREND screen..................................................................70
Figure 53: Signalling meter screen..............................................................................................................71
Figure 54: Signalling trend screen...............................................................................................................72
Figure 55: Signalling table screen ...............................................................................................................73
Figure 56: General recorder setup screen..................................................................................................74
Figure 57: Triggering in waveform record ..................................................................................................78
Figure 58: Waveform recorder setup screen..............................................................................................78
Figure 59: Waveform recorder capture screen ..........................................................................................80
Figure 60: Waveform recorder screen........................................................................................................80
Figure 61: Waveform recorder scope screen .............................................................................................81
Figure 62: Captured waveform recorder screen.........................................................................................82
Figure 63: Transient recorder setup screen –MI 2893 ..............................................................................85
Figure 64: Transient recorder setup screen –MI 2892/MI 2885................................................................87
Figure 65: Transient recorder capture screen (waiting phase/recording) –MI 2893 ................................89
Figure 66: Transient recorder capture screen (waiting phase/recording) –MI 2892/MI 2885 .................90
Figure 67: Captured transient recorder screen ..........................................................................................91
Figure 68: Voltage events in group view screen.........................................................................................92
Figure 69: Voltage event in detail view screen...........................................................................................93
Figure 70: Voltage events screens ..............................................................................................................95
Figure 71: Alarms list screen.......................................................................................................................97
Figure 72: RVC Events table group view screen..........................................................................................98
Figure 73: Inrush table group view screen..................................................................................................99
Figure 74: E - Meter measuring accuracy comparison methods ..............................................................100
Figure 75: PQI setup connection and Connection check..........................................................................101
Figure 76: E-Meter functionality under Recorder menu ..........................................................................101
Figure 77: E-Meter Recorder menu ..........................................................................................................101
Figure 78: E-Meter Recorder setup menu ................................................................................................103
Figure 79: Memory list screen (Folder structure).....................................................................................105
Figure 80: Memory list screen (Recorder data)........................................................................................106
Figure 81: Front page of General record in MEMORY LIST menu ............................................................108
Figure 82: Viewing recorder U,I,f TREND data..........................................................................................109
Figure 83: Front page of Snapshot in MEMORY LIST menu......................................................................111
Figure 84: U,I,f meter screen in recalled snapshot record .......................................................................112
Figure 85: MEASUREMENT SETUP submenu............................................................................................113
Figure 86: “CONNECTION SETUP” screen.................................................................................................114
Figure 87: Event setup screen..................................................................................................................119
Figure 88: Alarm setup screens................................................................................................................120
Figure 89: Signalling setup screen ............................................................................................................121
Figure 90: RVC setup screen .....................................................................................................................122
Figure 91: Measuring Methods setup screen –MI 2893..........................................................................123
Figure 92: Measuring Methods setup screen –MI 2892/MI 2885...........................................................123
Figure 93: Transient setup screen –MI 2893 ...........................................................................................124
Figure 94: Transient setup screen –MI 2892/MI 2885 ............................................................................125
Figure 95: GENERAL SETUP submenu.......................................................................................................125
Figure 96: Communication setup screen..................................................................................................126
Figure 97: Set date/time screen ...............................................................................................................128
Figure 98: Language setup screen ............................................................................................................129
Figure 99: Instrument info screen –MI 2893 ...........................................................................................129
Figure 100: Instrument info screen –MI 2892/MI 2885 ..........................................................................130
Figure 101: Lock/Unlock screen................................................................................................................131
Figure 102: Locked instrument screen......................................................................................................132

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Figure 103: Colour representation of phase voltages ..............................................................................132
Figure 104: Backlight screen.....................................................................................................................133
Figure 105: Recommended measurement practice .................................................................................138
Figure 106: Connection setup menu.........................................................................................................141
Figure 107: Choosing 3-phase 4-wire system on instrument ...................................................................141
Figure 108: 3-phase 4-wire system...........................................................................................................142
Figure 109: Choosing 3-phase 3-wire system on instrument ...................................................................142
Figure 110: 3-phase 3-wire system...........................................................................................................142
Figure 111: Choosing Open Delta (Aaron) 3-wire system on instrument.................................................143
Figure 112: Open Delta (Aaron) 3-wire system ........................................................................................143
Figure 113: Choosing 1-phase 3-wire system on instrument ...................................................................143
Figure 114: 1-phase 3-wire system...........................................................................................................144
Figure 115: Choosing 2-phase 4-wire system on instrument ...................................................................144
Figure 116: 2-phase 4-wire system...........................................................................................................145
Figure 117: Choosing single- phase Inverter system on instrument ........................................................145
Figure 118: Single –phase inverter system ..............................................................................................145
Figure 119: Choosing three- phase Inverter system on instrument.........................................................146
Figure 120: Three –phase inverter system ..............................................................................................146
Figure 121: Voltage ratio for 11 kV / 110 transformer example .............................................................147
Figure 122: Connecting instrument to the existing current transformers in medium voltage system
(Aaron / OpenDelta) .................................................................................................................................147
Figure 123: Connecting instrument to the existing current transformers in medium voltage system (Delta
–Delta)......................................................................................................................................................148
Figure 124: Connecting instrument to the existing current transformers in medium voltage system (Delta
–Star)........................................................................................................................................................148
Figure 125: Connecting instrument to the existing current transformers in medium voltage system (Star
–Star)........................................................................................................................................................149
Figure 126: Connecting instrument to the existing current transformers in medium voltage system (star
–delta)......................................................................................................................................................149
Figure 127: Smart current clamps auto range selection...........................................................................150
Figure 128: Parallel feeding of large load .................................................................................................151
Figure 129: Current clamps selection for indirect current measurement...............................................152
Figure 130: Selecting 10% of current clamps range.................................................................................152
Figure 131: Automatically recognised clamps setup ...............................................................................153
Figure 132: Automatically recognised clamps status...............................................................................153
Figure 133: Set time zone screen..............................................................................................................157
Figure 134: Schematic view on the remote measurements.....................................................................159
Figure 135: Internet connection setup screen..........................................................................................160
Figure 136: PowerView v3.0 remote connection settings form...............................................................161
Figure 137: PowerView v3.0 remote connection monitor .......................................................................162
Figure 138: PowerView connection to LAN and Metrel Server established (Steps 1 & 2).......................163
Figure 139: Remote instrument connection to Metrel Server established (Step 3) ................................164
Figure 140: Remote instrument connection to PowerView v3.0 established (Step 4).............................165
Figure 141: Active connection indication .................................................................................................165
Figure 142: Remote connection icon........................................................................................................166
Figure 143: Detection of the instrument type..........................................................................................166
Figure 144: Selecting records from a list for download............................................................................167
Figure 145: Real time scope window in remote connection, with several channels selected.................168
Figure 146: Remote Instrument Configuration form................................................................................169
Figure 147: Remote Recorder configuration ............................................................................................170
Figure 148: Recording in progress ............................................................................................................171
Figure 149: Phase and Phase-to-phase voltage........................................................................................180

MI 2893 / MI 2892 / MI 2885 Table of contents
13
Figure 150: IEEE 1459 phase power measurement organisation (phase)................................................181
Figure 151: IEEE 1459 phase power measurement organisation (totals).................................................182
Figure 152: Vector representation of total power calculus......................................................................187
Figure 153: Arithmetic representation of total power calculus ...............................................................187
Figure 154: Energy counters and quadrant relationship ..........................................................................190
Figure 155: Instrument energy counters ..................................................................................................190
Figure 156: Current and voltage harmonics .............................................................................................191
Figure 157: Illustration of harmonics / interharmonics subgroup for 50 Hz supply.................................192
Figure 158: Voltage fluctuation ................................................................................................................193
Figure 159:URms(1/2) 1-cycle measurement ................................................................................................195
Figure 160: Voltage events definition.......................................................................................................196
Figure 161:Voltage dip related screens on the instrument......................................................................197
Figure 162:Voltage interrupts related screens on the instrument...........................................................198
Figure 163: RVC event description............................................................................................................200
Figure 164: Synchronization and aggregation of 10/12 cycle intervals....................................................201
Figure 165: Avg vs. Avgon, switching load current...................................................................................203
Figure 166: Consumed/generated and inductive/capacitive phase/polarity diagram.............................203
Figure 167: Flagging data indicate that aggregated value might be unreliable .......................................204
Figure 168: Triggering and pre-triggering description..............................................................................205
Figure 169: Voltage Event Triggering........................................................................................................206
Figure 170: Voltage Level Triggering.........................................................................................................206
Figure 171: Current Level Triggering (Inrush)...........................................................................................207
Figure 172: Waveform recorder setup for triggering on voltage events..................................................207
Figure 173: Level triggering ......................................................................................................................208
Figure 174: Triggering slope......................................................................................................................208
Figure 175: Transients trigger detection (envelope) ................................................................................209
Figure 176: Transients trigger detection (level)........................................................................................209
Figure 177: Mains signalling voltage level limits according to EN50160..................................................211
Figure 178: Predefined EN50160 recorder configuration.........................................................................213
Figure 179: General Recorder setup to allow auto-recording restart, when reaches maximum file length
..................................................................................................................................................................230
Figure 180: Battery compartment ............................................................................................................234
Figure 181: Closing the battery compartment cover................................................................................235
Figure 182: PowerView update function..................................................................................................236
Figure 183: Selecting USB communication...............................................................................................237
Figure 184: Check for Firmware menu .....................................................................................................237
Figure 185: Check for Firmware menu .....................................................................................................237
Figure 186: New firmware is available for download...............................................................................238
Figure 187: FlashMe firmware upgrade software ....................................................................................238
Figure 188: FlashMe configuration screen ...............................................................................................239
Figure 189: FlashMe programming screen ...............................................................................................240

MI 2893 / MI 2892 / MI 2885 Introduction
14
1Introduction
MI 2893/MI 2892/MI 2885 are handheld multifunction instrument for power quality analysis, high speed
transient capturing (MI 2893), transient capturing (MI 2892/MI 2885) and troubleshooting as well as
energy efficiency measurements.
Figure 1: Power Master XT instrument
Product differentiation:
MI 2893/2892/2885 sharing same measuring hardware and firmware platform.
MI 2893 –Class A Power Quality Instrument with additional transient measuring board with sampling
period 1 MHz
MI 2892 - Class A Power Quality Instrument with transient measurement on measuring board with
sampling period 49 kHz
MI 2885 - Class S specified Power Quality Instrument with transient measurement on measuring board
with sampling period 49 kHz
Note:
The appearance of the product is outwardly the same. The only differences are in the marking labels and
the front plates.

MI 2893 / MI 2892 / MI 2885 Main Features
15
Figure 2: Front plates and marking labels
1.1 Main Features
Full compliance with power quality standard IEC 61000-4-30 Class A (MI 2893/MI 2892)
Full compliance with power quality standard IEC 61000-4-30 Class S (MI 2885)
Simple and powerful recorder with microSD memory card (sizes up to 32 GB are supported).
4 voltage channels with wide measurement range: up to 1000 Vrms, CAT III / 1000 V, with
support for medium and high voltage systems.
Simultaneous voltage and current (8 channels) sampling, 16-bit AD conversion for accurate
power measurements and minimal phase shift error.
4 current channels with support for automatic clamp recognition and automatic range selection.
Compliance with IEC 61557-12 and IEEE 1459 (Combined, fundamental, nonfundamental power)
and IEC 62053-21 (Energy).
High speed transient sampling > 1MSamples/sec simultaneously on all 8 channels (4xU & 4xI)
(MI 2893)
Transient selection between N /GND (MI 2893)
Transient recorder with envelope or level triggering, with sampling frequency 49 kHz (MI 2892
/MI 2885)
4.3’’ TFT colour display.
Waveform/inrush recorder, which can be triggered on Event/Alarms/Level U/Level I/Interval;
transient recorder for phase/neutral lines (voltage and current simultaneously) with level and
envelope trigger selection run simultaneously with general recorder.

MI 2893 / MI 2892 / MI 2885 Safety considerations
16
Support for 50Hz, 60Hz, 400Hz system frequency and direct VFD (variable frequency drives)
measurement
Measuring the accuracy of electric meters (electronic and mechanical) (MI 2892/MI 2885)
PC Software PowerView v3.0 is an integral part of a measuring system which provides easiest
way to download, view and analyse measured data or print reports.
oPowerView v3.0 analyser exposes a simple but powerful interface for downloading
instrument data and getting quick, intuitive and descriptive analysis. Interface has been
organized to allow quick selection of data using a Windows Explorer-like tree view.
oUser can easily download recorded data, and organize it into multiple sites with many
sub-sites or locations.
oGenerate charts, tables and graphs for your power quality data analysing, and create
professional printed reports.
oExport or copy / paste data to other applications (e.g. spreadsheet) for further analysis.
oMultiple data records can be displayed and analysed simultaneously.
oMerge different logging data into one measurement, synchronize data recorded with
different instruments with time offsets, split logging data into multiple measurements,
or extract data of interest.
oInstrument remote access over internet connection.
1.2 Safety considerations
To ensure operator safety while using the MI 2893/MI 2892/MI 2885 instruments and to minimize the
risk of damage to the instrument, please note the following general warnings:
The instrument has been designed to ensure maximum operator safety. Usage in a way
other than specified in this manual may increase the risk of harm to the operator!
Do not use the instrument and/or accessories if any visible damage is noticed!
The instrument contains no user serviceable parts. Only an authorized dealer can carry out
service or adjustment!
All normal safety precautions have to be taken in order to avoid risk of electric shock when
working on electrical installations!
Only use approved accessories which are available from your distributor!
Instrument contains rechargeable NiMH batteries. The batteries should only be replaced
with the same type as defined on the battery placement label or in this manual. Do not use
standard batteries while power supply adapter/charger is connected, otherwise they may
explode!
Hazardous voltages exist inside the instrument. Disconnect all test leads, remove the power
supply cable and switch off the instrument before removing battery compartment cover.
Maximum nominal voltage between any phase and neutral input is 1000 VRMS. Maximum
nominal voltage between phases is 1730 VRMS.
Always short unused voltage inputs (L1, L2, L3, GND) with neutral (N) input to prevent
measurement errors and false event triggering due to noise coupling.

MI 2893 / MI 2892 / MI 2885 Applicable standards
17
Do not remove microSD memory card while instrument is recording or reading data. Record
damage and card failure can occur.
1.3 Applicable standards
The MI 2893/MI 2892/MI 2885 are designed and tested in accordance with the following standards:
Electromagnetic compatibility (EMC)
EN 61326-1: 2021
Electrical equipment for measurement, control and laboratory
use –EMC requirements –Part 1: General requirements
EN 61326-2-2: 2021
Electrical equipment for measurement, control and laboratory
use –EMC requirements –
Part 2-2: Particular requirements - Test configurations,
operational conditions and performance criteria for portable
test, measuring and monitoring equipment used in low-
voltage distribution systems
Emission: Class A equipment (for industrial purposes)
Immunity for equipment intended for use in industrial
locations
Safety (LVD)
EN 61010-1: 2010 + A1:2019
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 1: General requirements
EN 61010-2-030: 2021 + A11:2021
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 2-030: Particular requirements for testing and measuring
circuits
EN 61010-031: 2015 + A1:2021 +
A11:2021
Safety requirements for electrical equipment for
measurement, control and laboratory use –
Part 031: Safety requirements for hand-held probe assemblies
for electrical measurement and test
EN 61010-2-032: 2021 + A11:2021
Safety requirements for electrical equipment for
measurement, control and laboratory use
Part 032: Particular requirements for hand-held and
hand-manipulated current sensors for electrical test and
measurement
Measurement methods
IEC 61000-4-30: 2015 + A1:2021
Class A
Electromagnetic Compatibility (EMC) –
Part 4-30: Testing and measurement techniques - Power
quality measurement methods
IEC 61557-12: 2018 + A1:2021
Electrical safety in low voltage distribution systems up to 1 000
V a.c. and 1 500 V d.c. - Equipment for testing, measuring or
monitoring of protective measures –Part 12: Performance
measuring and monitoring devices (PMD)
IEC 61000-4-7: 2002 + A1: 2008
Electromagnetic compatibility (EMC) –
Part 4-7: Testing and measurement techniques –General guide
on harmonics and inter-harmonics measurements and
instrumentation for power supply systems and equipment
connected thereto
IEC 61000-4-15: 2010/ISH1:2017
Electromagnetic compatibility (EMC) –

MI 2893 / MI 2892 / MI 2885 Abbreviations
18
Part 4-15: Testing and measurement techniques –Flicker
meter –Functional and design specifications
IEC 62053-21: 2020
Electricity metering equipment (a.c.) - Particular requirements
- Part 21: Static meters for active energy (classes 1 and 2)
IEC 62053-23: 2020
Electricity metering equipment (a.c.) - Particular requirements
- Part 23: Static meters for reactive energy (classes 2 and 3)
IEEE 1459: 2010
IEEE Standard Definitions for the Measurement of Electric
Power Quantities Under Sinusoidal, Non-sinusoidal, Balanced,
or Unbalanced Conditions
EN 50160: 2010
Voltage characteristics of electricity supplied by public
electricity networks
GOST R 54149: 2010
Electric energy. Electromagnetic compatibility of technical
equipment. Power quality limits in the public power supply
systems
Note about EN and IEC standards:
Text of this manual contains references to European standards. All standards of EN 6XXXX (e.g. EN
61010) series are equivalent to IEC standards with the same number (e.g. IEC 61010) and differ only in
amended parts required by European harmonization procedure.
1.4 Abbreviations
In this document following symbols and abbreviations are used:
CFI
Current crest factor, including CFIp (phase p current crest factor) and
CFIN (neutral current crest factor). See 5.1.3 for definition.
CFU
Voltage crest factor, including CFUpg (phase p to phase g voltage
crest factor) and CFUp (phase p to neutral voltage crest factor). See
5.1.2 for definition.
 DPFind/cap
Instantaneous phase power displacement (fundamental) power
factor or cos , including  DPFpind (phase p power displacement).
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character.
DPFind/cap

Recorded phase displacement (fundamental) power factor or cos ,
including DPFpind/cap

(phase p power displacement).
Minus sign indicates generated
power and plus sign indicates
consumed power. Suffix ind/cap
represents inductive/ capacitive
character. This parameter is recorded
separately for each quadrant as
shown on figure. See 5.1.5 for
definition.
 DPFatotind
 DPFatotcap
Instantaneous total arithmetic displacement (fundamental) power
factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
2700
DPFind+
Lead
Lag
DPFcap+
DPFcap-
DPFind-
1800
900
00
+P-P
-Q
+Q I
II
III IV

MI 2893 / MI 2892 / MI 2885 Abbreviations
19
DPFatotind

DPFatotcap

Recorded total arithmetic
fundamental power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.6 for
definition.
 DPFvtotind
 DPFvtotcap
Instantaneous positive sequence total vector displacement
(fundamental) power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.6 for definition.
DPFvtotind

DPFvtotcap

Recorded total vector fundamental
power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.6 for
definition.
 DPF+totind
 DPF+totcap
Instantaneous positive sequence fundamental power factor.
Minus sign indicates generated power and plus sign indicates
consumed power. Suffix ind/cap represents inductive/capacitive
character. See 5.1.5 for definition.
DPF+totind

DPF+totcap

Recorded total positive sequence
fundamental power factor.
Minus sign indicates generated power
and plus sign indicates consumed
power. Suffix ind/cap represents
inductive/capacitive character. This
parameter is recorded separately as
shown on figure. See 5.1.5 for
definition.
Dı
Phase current distortion power, including Dıp (phase p current
distortion power). See 5.1.5 section: Modern Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Deı
Total effective current distortion power. See 5.1.5 section: Modern
Power measurement
Standard compliance: IEEE 1459-2010 for definition.
DH
Phase harmonics distortion power, including DHp (phase p
harmonics distortion power). See 5.1.5 section: Modern Power
measurement
Standard compliance: IEEE 1459-2010 for definition.
2700
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPFatotind+
DPFatotcap+
DPFatotcap-
DPFatotind-
2700
Lead
Lag
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPF+totind+
DPF+totcap+
DPF+totcap-
DPF+totind-
2700
1800
900
00
+P-P
-Q
+Q I
II
III IV
DPFvtotind+
DPFvtotcap+
DPFvtotcap-
DPFvtotind-

MI 2893 / MI 2892 / MI 2885 Abbreviations
20
DeH
Total effective harmonics distortion power. See 5.1.5 section: Total
nonfundamental power measurements for definition.
Dᴠ
Phase voltage distortion power, including Dᴠp (phase p voltage
distortion power). See 5.1.5 section: Modern Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Deᴠtot
Total effective voltage distortion power. See 5.1.5 section: Modern
Power measurement
Standard compliance: IEEE 1459-2010 for definition.
Ep

Recorded phase combined (fundamental and nonfundamental)
active energy, including Epp+/-(phase p active energy). Minus sign
indicates generated energy and plus sign indicates consumed
energy. See 5.1.6 for definition.
Eptot

Recorded total combined (fundamental and nonfundamental) active
energy. Minus sign indicates generated and plus sign indicates
consumed energy. See 5.1.6 for definition.
Eq

Recorded phase fundamental reactive energy, including Eqp+/-
(phase p reactive energy). Minus sign indicates generated and plus
sign indicates consumed energy. See 5.1.6 for definition.
Eqtot

Recorded total fundamental reactive energy. Minus sign indicates
generated and plus sign indicates consumed energy. See 5.1.6 for
definition.
Effinv
Photovoltaic inverter efficiency
f, freq
Frequency, including freqU12 (voltage frequency on U12), freqU1
(voltage frequency on U1and freqI1 (current frequency on I1). See
5.1.4 for definition.
i-
Negative sequence current ratio (%). See 5.1.11 for definition.
i0
Zero sequence current ratio (%). See 5.1.11 for definition.
I+
Positive sequence current component on three phase systems. See
5.1.11 for definition.
I-
Negative sequence current component on three phase systems. See
5.1.11 for definition.
I0
Zero sequence current components on three phase systems. See
5.1.11 for definition.
IRms(1/2)
RMS current measured over 1 cycle, commencing at a fundamental
zero crossing on an associated voltage channel, and refreshed each
half-cycle, including IpRms(1/2) (phase p current), INRms(1/2) (neutral RMS
current)
Ifund
Fundamental RMS current Ih1(on 1st harmonics), including Ifundp
(phase p fundamental RMS current) and IfundN(neutral RMS
fundamental current). See 5.1.8 for definition
Ihn
nth current RMS harmonic component including Iphn(phase p; nth
RMS current harmonic component) and INhn(neutral nth RMS current
harmonic component). See 5.1.8 for definition