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MI 2893 / MI 2892 / MI 2885

Maintenance

234

7

Maintenance

7.1

Inserting batteries into the instrument

1.

Make sure that the power supply adapter/charger and measurement leads are disconnected
and the instrument is switched off before opening battery compartment cover.

2.

Insert batteries as shown in figure below (insert batteries correctly, otherwise the
instrument will not operate and the batteries could be discharged or damaged).

Figure 180: Battery compartment

3.

Turn the instrument upside down (see figure below) and put the cover on the batteries.

1

Battery cells

2

Serial number label

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Summary of Contents for MI 2885

Page 1: ...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...

Page 2: ...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...

Page 3: ...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...

Page 4: ...8 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...

Page 5: ...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...

Page 6: ...tainty 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...

Page 7: ...ymbols 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...

Page 8: ...ment 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 I...

Page 9: ...eys 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...

Page 10: ...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...

Page 11: ...e 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 Figur...

Page 12: ...a 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...

Page 13: ...ase 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 20...

Page 14: ...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...

Page 15: ...ower 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 fundam...

Page 16: ...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 Th...

Page 17: ...or 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 meas...

Page 18: ...ions 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 C...

Page 19: ...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 fundamen...

Page 20: ...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 fre...

Page 21: ...tive power Minus sign indicates generated and plus sign indicates consumed power See 5 1 5 for definitions Ptot Instantaneous total active combined fundamental and nonfundamental power Minus sign indi...

Page 22: ...See 5 1 5 for definitions PFind PFcap Instantaneous phase combined fundamental and nonfundamental power factor including PFpind cap phase p power factor Minus sign indicates generated power and plus...

Page 23: ...total vector combined fundamental and nonfundamental power factor Minus sign indicates generated power and plus sign indicates consumed power Suffix ind cap represents inductive capacitive character...

Page 24: ...power including Ncap indp phase p nonactive phase power Suffix ind cap represents inductive capacitive character Minus sign indicates generated and plus sign indicates consumed fundamental reactive po...

Page 25: ...nd plus sign indicates consumed fundamental reactive power This parameter is recorded separately for each quadrant as shown on figure See 5 1 6 for definition Qafundtot Instantaneous fundamental total...

Page 26: ...wer See 5 1 5 for definition THDI Total harmonic distortion current in or A including THDIp phase p current THD and THDIN neutral current THD See 5 1 8 for definition THDU Total harmonic distortion vo...

Page 27: ...phase g half cycle voltage and UpRms 1 2 phase p to neutral half cycle voltage See 5 1 12 for definition USwell Maximal URms 1 2 voltage measured during swell occurrence USig Mains signalling RMS volt...

Page 28: ...ameters 4 ENTER key Step into submenu 5 ESC key Exits any procedure confirms new settings 6 SHORTCUT keys Quick access to main instrument functions 7 LIGHT key BEEP OFF Adjust LCD backlight intensity...

Page 29: ...term voltage of external power supply adapter is 14 V Figure 4 Top connector panel Top connector panel layout 1 Clamp on current transformers I1 I2 I3 IN input terminals 2 Voltage L1 L2 L3 N GND input...

Page 30: ...000 A 300 A 30 A A 1227 A 1502 4 Temperature probe A 1354 1 Colour coded test probe 5 Colour coded crocodile clip 5 Colour coded voltage measurement lead 5 USB cable 1 RS232 cable 1 Ethernet cable 1 1...

Page 31: ...nd keypad Measured data and instrument status are shown on the display Basic display symbols and keys description is shown on figure below Figure 7 Display symbols and keys description During measurem...

Page 32: ...le detected but reporting invalid time and position data Searching for satellites or too weak satellite signal GPS time valid valid satellite GPS time signal Instrument act as host USB and is ready to...

Page 33: ...cation with PC is disabled while in this mode See section 3 22 for details 3 2 Instrument keys Instrument keyboard is divided into four subgroups Function keys Shortcut keys Menu zoom manipulation key...

Page 34: ...should be formatted to a single partition FAT32 file system and inserted into the instrument as shown on figure below microSD Card Figure 10 Inserting microSD card 1 Open instrument cover 2 Insert mic...

Page 35: ...ings GENERAL SETUP submenu Provide access to the various instrument settings Table 5 Keys in Main menu Selects submenu Enters selected submenu 3 4 1 Instrument submenus By pressing ENTER key in Main m...

Page 36: ...MI 2893 MI 2892 MI 2885 Instrument Main Menu 36 Figure 12 Measurements submenu Figure 13 Recorders submenu MI 2893 Figure 14 Recorders submenu MI 2892 MI 2885 Figure 15 Measurement setup submenu...

Page 37: ...oltage current and frequency parameters can be observed in the U I f screens Measurement results can be viewed in a tabular METER or a graphical form SCOPE TREND TREND view is active only in RECORDING...

Page 38: ...S UL IL True effective value URms and IRms THD ThdU ThdI Total harmonic distortion THDU and THDI CF Crest factor CFU and CFI PEAK Peak value UPk and IPk MAX Maximal URms 1 2 voltage and maximal IRms 1...

Page 39: ...measurements for all phase to phase voltages 12 23 31 Shows measurements for phase to phase voltage L12 12 23 31 Shows measurements for phase to phase voltage L23 12 23 31 Shows measurements for phas...

Page 40: ...w U I U I U I Shows voltage waveform U I U I U I Shows current waveform U I U I U I Shows voltage and current waveform single graph U I U I U I Shows voltage and current waveform dual graph Selects be...

Page 41: ...TS submenu 3 5 3 Trend While GENERAL RECORDER is active TREND view is available see section 3 14 for instructions how to start recorder 3 5 4 Voltage and current trends Current and voltage trends can...

Page 42: ...nterval IP selected by cursor 32m 00s Current GENERAL RECORDER time d days h hours m minutes s seconds Table 12 Keys in Trend screens Selects between the following options U I f U I U I Shows voltage...

Page 43: ...93 MI 2892 MI 2885 43 METER Switches to METER view SCOPE Switches to SCOPE view TREND Switches to TREND view Moves cursor and selects time interval IP for observation Returns to the MEASUREMENTS subme...

Page 44: ...save data according IEEE 1459 and data presentation could be also selected under PowerView 3 6 1 Meter By entering POWER option from Measurement s submenu the tabular POWER METER screen is shown see...

Page 45: ...ve arithmetic total power Natot Q Fundamental reactive phase power Qfund1 Qfund2 Qfund3 Qa Fundamental total arithmetic reactive power Qafundtot Qv Fundamental total vector reactive power Qvfundtot S...

Page 46: ...damental and nonfundamental power factor PFa PFe Total effective combined fundamental and nonfundamental power factor PFe PFv Total vector combined fundamental and nonfundamental power factor PFv DPF...

Page 47: ...ted by cursor P1 P2 P3 P View Fundamental power Maximal average and minimal value of consumed Pfund1 Pfund2 Pfund3 P tot or generated Pfund1 Pfund2 Pfund3 P tot active fundamental power for time inter...

Page 48: ...1 DPFi2 DPFi3 DPF it View Fundamental power Maximal average and minimal value of inductive displacement power factor 1st quadrant DPF1ind DPF2ind DPF3ind DPFtotind and 3rd quadrant DPF1ind DPF2ind DPF...

Page 49: ...c S Pfi PFc Shows capacitive power factor trend If Fundamental power is selected P Qi Qc S DPFi DPfc Shows fundamental active power trend P Qi Qc S DPFi DPfc Shows fundamental inductive reactive power...

Page 50: ...itches to TREND view available only during recording Moves cursor and selects time interval IP for observation Returns to the MEASUREMENTS submenu 3 7 Energy 3 7 1 Meter Instrument shows status of ene...

Page 51: ...psed time Table 18 Keys in Energy METER screens HOLD Holds measurement on display RUN Runs held measurement TOT LAST CUR Shows energy registers for whole record TOT LAST CUR Shows energy registers for...

Page 52: ...ate Duration Recorder elapsed time Table 20 Keys in Energy TREND screens Ep Eq Ep Eq Shows active consumed energy for time interval IP selected by cursor Ep Eq Ep Eq Shows reactive consumed energy for...

Page 53: ...phase fundamental inductive reactive power Qfundind1 Qfundind2 Qfundind3 Positive sequence of total inductive fundamental generated reactive power Q tot Shown fundamental inductive reactive power is a...

Page 54: ...maximal Conductors utilisation Shows conductor cross section utilisation for chosen time interval TOT LAST MAX GREEN colour represents part of conductor cross section wire used for active energy tran...

Page 55: ...ion results with presence of a frequency that is not integer multiple of fundamental this frequency is called inter harmonic frequency and component with such frequency is called inter harmonic See 5...

Page 56: ...nt VIEW Switch s view between Harmonics and Inter harmonics Switches units between RMS Volts Amperes of fundamental harmonic Keys in VIEW window Selects option Confirms selected option Exits selection...

Page 57: ...iations used in BAR screens are shown in table below Table 25 Instrument screen symbols and abbreviations Ux h01 h50 Instantaneous voltage harmonic inter harmonic component in VRMS and in of fundament...

Page 58: ...omponents for phases L31 METER Switches to METER view BAR Switches to BAR view AVG Switches to AVG average view available only during recording TREND Switches to TREND view available only during recor...

Page 59: ...on THDU in V and in of fundamental voltage Ix THD Average total current harmonic distortion THDI in ARMS and in of fundamental current Table 28 Keys in Harmonics inter harmonics AVG screens VIEW Switc...

Page 60: ...3 14 for instructions how to start GENERAL RECORDER Voltage and current harmonic inter harmonic components can be observed by cycling function key F4 METER BAR AVG TREND Figure 43 Harmonics and inter...

Page 61: ...r harmonics components for phase L1 1 2 3 N Shows selected harmonics inter harmonics components for phase L2 1 2 3 N Shows selected harmonics inter harmonics components for phase L3 1 2 3 N Shows sele...

Page 62: ...is shown in table below Note that Flickers measurement intervals are synchronised to real time clock and therefore refreshed on minute 10 minutes and 2 hours intervals Table 31 Instrument screen symb...

Page 63: ...re 45 Flickers trend screen Table 33 Instrument screen symbols and abbreviations Pst1m1 Pst1m2 Pst1m3 Pst1m12 Pst1m23 Pst1m31 Maximal average and minimal value of 1 minute short term flicker Pst 1min...

Page 64: ...ows selected flicker trends for all phases average only METER Switches to METER view TREND Switches to TREND view available only during recording Moves cursor and selects time interval IP for observat...

Page 65: ...clock time will be displayed in the right top corner RUN Runs held measurement U I I U Selects voltage for scaling with cursors Selects current for scaling with cursors METER Switches to PHASE DIAGRA...

Page 66: ...s HOLD Holds measurement on display Hold clock time will be displayed in the right top corner RUN Runs held measurement U I I U Shows voltage unbalance measurement and selects voltage for scaling with...

Page 67: ...and minimal value of negative sequence current I I0 Maximal average and minimal value of zero sequence current I0 Table 40 Keys in Unbalance trend screens U U U0 I I I0 u u0 i i0 Shows selected voltag...

Page 68: ...will be displayed in the right top corner RUN Runs held measurement METER Switches to METER view TREND Switches to TREND view available only during recording Triggers Waveform snapshot Returns to the...

Page 69: ...METER or a graphical form TREND view which is active only while GENERAL RECORDER is active See section 3 14 for instructions how to start recording In order to understand meanings of particular param...

Page 70: ...TREND view is available see section 3 14 for instructions how to start recording Under deviation and over deviation parameters can be observed by cycling function key F4 METER TREND Figure 52 Under de...

Page 71: ...ten applied at a non harmonic frequency that remotely control industrial equipment revenue meters and other devices Before observing signalling measurements user should set up signalling frequencies i...

Page 72: ...rement METER Switches to METER view TREND Switches to TREND view available only during recording TABLE Switches to TABLE view available only during recording Triggers Waveform snapshot Returns to the...

Page 73: ...gnalling for all phase to phase voltages average only METER Switches to METER view TREND Switches to TREND view available only during recording TABLE Switches to TABLE view available only during recor...

Page 74: ...23 4 for details f1 1st observed signalling frequency f2 2nd observed signalling frequency Table 54 Keys in Signalling TABLE screen METER Switches to METER view TREND Switches to TREND view available...

Page 75: ...stauration it will automatically start new recording session Capturing of predefined Alarms under progress Capturing of predefined Events under progress Capturing of Inrush under progress Capturing of...

Page 76: ...ded Define network events which are captured and registered during recorder session ON OFF selection MI 2893 MI 2892 MI 2885 Recommended maximal record duration Show recommended and maximal Duration p...

Page 77: ...time window without modifications Selects parameter to be changed Modifies parameter Returns to the RECORDERS submenu 3 15 Waveform Inrush recorder Waveform recording is a powerful tool for troublesh...

Page 78: ...ed by voltage level Level I triggered by current level inrush Interval periodical trigger for given time period each 10 minutes for example Interval between two time triggered waveforms in Interval tr...

Page 79: ...ls CONFIG Shortcut to CONNECTION SETUP menu See 3 23 1 for details CHECK C Check connection settings See 3 23 1 for details Selects parameter to be changed Modifies parameter Enter into submenu Return...

Page 80: ...menu See 3 23 1 for details Returns to the WAVEFORM REC menu Figure 60 Waveform recorder screen STOP Stops waveform recording Note If user forces waveform recorder to stop before trigger occurs no da...

Page 81: ...U I U I U I Shows voltage waveform U I U I U I Shows current waveform U I U I U I Shows voltage and current waveforms on single graph U I U I U I Shows voltage and current waveforms on separate graph...

Page 82: ...t i2 t i3 t in t Samples value of phase currents I1 I2 I3 IN U1 U2 U3 Un True effective half cycle phase voltage URms 1 2 U12 U23 U31 True effective half cycle phase to phase voltage URms 1 2 I1 I2 I3...

Page 83: ...e to phase voltage L23 12 23 31 Shows waveforms for phase to phase voltage L31 12 23 31 Shows all phase to phase waveforms Sets vertical zoom Moves cursor Toggles between sample value and true effecti...

Page 84: ...kV Fast transients due to switching in LV by air gap switches 3 16 1 Power Master XT MI 2893 A transient recording is recording with the 1 MSamples sec sampling rate The principle of measurement is s...

Page 85: ...riggering will occur See 5 1 20 for details Phase voltage limits Minimum value 0 0055 Unom sqrt 2 Maximum value 1 1 Unom sqrt 2 Neutral voltage limits not available Phase Neutral current limits Minimu...

Page 86: ...gger selection 150 Inom sqrt 2 Store mode Store mode setup Single transient recording ends after first trigger Continuous Max 1500 rec consecutive transient recording until user stops the measurement...

Page 87: ...ote only single trigger could be selected Selecting the trigger one will automatically deselect other ones Table 66 Transient recorder settings description and screen symbols Trigger Envelope Trigger...

Page 88: ...ve phase current channels NEUTRAL Un Trigger on transients at Ground to Neutral voltage channel In Trigger on transients at Neutral current channel Note Minimum current trigger selection 10 Inom sqrt...

Page 89: ...for details Selects parameter to be changed Modifies parameter Enter into submenu Returns to the submenu 3 16 3 Capturing transients After transient recorder is started instrument waits for trigger oc...

Page 90: ...if recording is in progress Selects which waveforms to show U I U I U I Shows voltage waveform U I U I U I Shows current waveform U I U I U I Shows voltage and current waveforms on single graph U I U...

Page 91: ...2 t u3 t un t Samples value of phase voltages U1 U2 U3 UN u12 t u23 t u31 t Samples value of phase to phase voltages U12 U23 U31 i1 t i2 t i3 t in t Samples value of phase currents I1 I2 I3 IN Table 7...

Page 92: ...nts can be grouped according to IEC 61000 4 30 Additionally for troubleshooting purposes events can be separated by phase This is toggled by pressing function key F1 Event table is active only during...

Page 93: ...hown only in event details since one grouped event can have many phase events Start Event start time when first URms 1 2 value crosses threshold T Indicates type of event or transition D Dip I Interru...

Page 94: ...rush view Selects event Enters detail event view Returns to Events table group view screen Returns to RECORDERS submenu 3 17 2Phase view In this view voltage events are separated by phases This is con...

Page 95: ...No Unified event number ID L Indicate phase or phase to phase voltage where event has occurred 1 event on phase U1 2 event on phase U2 3 event on phase U3 12 event on voltage U12 23 event on voltage...

Page 96: ...ws only events on phases L23 12 23 31 T Shows only events on phases L31 12 23 31 T Shows events on all phases VIEW Shows selected waveform and inrush view Selects event Enters detail event view Return...

Page 97: ...s table screens Filters alarms according to the following parameters UIF C Pwr F Pwr NF Pwr Flick Sym H iH Sig Temp All alarms UIF C Pwr F Pwr NF Pwr Flick Sym H iH Sig Temp Voltage alarms UIF C Pwr F...

Page 98: ...l alarms Selects an alarm Returns to the RECORDERS submenu 3 19 Rapid voltage changes RVC table In this table captured RVC events are shown Events appear in the table after finish when voltage is in t...

Page 99: ...79 Keys in RVC Events table group view screens STAT Shows event statistics phase by phase RVC Returns to RVC Events table group view screen Returns to RVC Events table group view screen Returns to REC...

Page 100: ...ost accurate current clamps A 1588 or I U transducer A 1037 to achieve the highest possible accuracy Note Metrel suggest to use A 1398 PQA A 1588 current clamps or A 1037 U I transducer to achieve the...

Page 101: ...d and PQI 4 Select E Meter recorder under Recorder menu Figure 76 E Meter functionality under Recorder menu 5 E Meter recording window and parameters setup Figure 77 E Meter Recorder menu Table 81 E M...

Page 102: ...s from the E Meter from the total defined number of pulses Example 3 5 3 pulses accepted from the total selected number of 5 Error E Meter error getting from the individual measurement On the LCD scre...

Page 103: ...cable when PQA measure primary current and e meter measure secondary current VT ratio Voltage transformer ratio applicable when PQA measure primary voltage and e meter measure secondary current Number...

Page 104: ...ent cvbvbvbnvbnvnbnbnbn type producer etc CLEAR Delete selected character CLR ALL Delete complete string A Shortcut to characters A M Shortcut to characters M Select Q Q Selection of reactive energy u...

Page 105: ..._MM_DD_HHMM_xxxxx where REC represent Folder type YYYY represent actual year HH represent actual month DD represent actual day HHMM represent actual hour minutes xxxxx record number 00000 99999 runnin...

Page 106: ...S submenu By pressing VIEW button details of selected folder are presented Figure 80 Memory list screen Recorder data Table 86 Instrument screen symbols and abbreviations Record No Selected record num...

Page 107: ...Record size in kilobytes kB or megabytes MB Table 87 Keys in Memory list screen VIEW Views details of currently selected record CLEAR Clears selected record USB STICK COPY FOLD COPY FILE Enable USB me...

Page 108: ...d number for which details are shown FILE NAME Record name on SD Card Type Indicate type of record General record Interval General record recording interval integration period Start General record sta...

Page 109: ...ds next or previous record Selects parameter only in CHANNELS SETUP menu Returns to the RECORDERS submenu By pressing VIEW in CHANNELS SETUP menu TREND graph of selected channel group will appear on t...

Page 110: ...ent trend U I f U I U I Shows frequency trend U I f U I U I Shows voltage and current trends single mode U I f U I U I Shows voltage and current trends dual mode Selects between phase neutral all phas...

Page 111: ...Record No Selected record number for which details are shown FILE NAME Record name on SD Card Type Indicate type of record Snapshot Start Record start time Size Record size in kilobytes kB Table 93 Ke...

Page 112: ...s shown on figure below Figure 84 U I f meter screen in recalled snapshot record Note For more details regarding manipulation and data observing see previous sections of this manual Note Initial WAVEF...

Page 113: ...Modern IEEE 1459 Classic Vector Classic Arithmetic Transient setup Setup of parameters for Transient recorder Inrush setup Setup of parameters for Waveform Inrush recorder Wave Rec setup Setup of para...

Page 114: ...n press ENTER for setting transformer parameters Voltage ratio Potential transformer ratio Transformer type Additional transformer ratio Primary Secondary Symbol Delta Star 1 3 Star Delta 3 Star Star...

Page 115: ...gue which clamps are developed as Smart clamps Note Use None option for voltage measurements only Note See section 4 2 3 for details regarding further clamps settings Connection Method of connecting t...

Page 116: ...tor connection INV3W Single phase invertor connection Synchronization Synchronization channel This channel is used for instrument synchronization to the network frequency Also a frequency measurement...

Page 117: ...t some measurements are at the edge of the measurement setup specification This does not mean that something is necessary wrong but require user attention to double check connection and instrument set...

Page 118: ...table Record organisation Folder Record starting time Rounded Transient select GND Waveform recorder setup Event Table 97 Keys in Connection setup menu Selects Connection setup parameter to be modifie...

Page 119: ...Threshold Set dip threshold value in of nominal voltage Dip Hysteresis Set dip hysteresis value in in of nominal voltage Interrupt Threshold Set interrupt threshold value in of nominal voltage Interru...

Page 120: ...eens Table 100 Description of Alarm setup 1st column Quantity P Uh5 I on figure above Select alarm from measurement group and then measurement itself 2nd column Phase TOT L1 on figure above Select pha...

Page 121: ...of an alarm Returns to the MEASUREMENT SETUP submenu 3 23 4 Signalling setup Mains signalling voltage called ripple control signal in certain applications is a burst of signals often applied at a non...

Page 122: ...ions and during which the RMS voltage does not exceed the dip swell thresholds A voltage is in a steady state condition if all the immediately preceding 100 120 URms values remain within a set RVC thr...

Page 123: ...section 5 1 5 for Modern Power measurement and 5 1 6 for Classic Vector and Arithmetic Power measurement details Please note that instrument record all measurement Classic and Modern regardless of sel...

Page 124: ...ggles between given parameters Changes selected parameter Returns to the MEASUREMENT SETUP submenu 3 23 7 Transient setup Note MI 2893 Transient Recorder runs simultaneously with General Recorder MI 2...

Page 125: ...r In Level U or Un or I or In Table 108 Description of Transient setup Help Show triggering help screens See 5 1 20 for details TRIG OFF Deleting the trigger selection CHECK C Check connection setting...

Page 126: ...B communication cable INTERNET communication Instrument is connected to the internet through local area network Ethernet LAN PowerView access to the instrument is made over internet and Metrel GPRS Re...

Page 127: ...elected Secret number will assure additional protection of communication link Same number should be entered in PowerView v3 0 before connection establishment MAC address Instrument Ethernet MAC addres...

Page 128: ...o synchronize its system time clock with Coordinated Universal Time UTC time provided by externally connected GPS module In that case only time zone in 15 min intervals can be adjusted In order to use...

Page 129: ...etup screen Selects language Confirms the selected language Returns to the GENERAL SETUP submenu 3 24 4 Instrument info Basic information concerning the instrument company user data serial number firm...

Page 130: ...location Note presented only in case when GPS is connected to instrument Table 117 Keys in Instrument info screen Returns to the GENERAL SETUP submenu 3 24 5 Lock Unlock MI 2893 MI 2892 MI 2885 have...

Page 131: ...Disabled Enabled Table 119 Keys in Lock Unlock screen Selects parameter to be modified Change value of the selected digit in Enter pin window Selects digit in Enter pin window Locks the instrument Ope...

Page 132: ...r model In COLOUR MODEL menu user can change colour representation of phase voltages and currents according to the customer needs There are some predefined colour schemes EU USA etc and a custom mode...

Page 133: ...nu Returns to the GENERAL SETUP submenu without modifications 3 24 7 Backlight In BACKLIGHT menu user can define if LCD will be switched OFF automatically after predefined time LCD is switched OFF in...

Page 134: ...MI 2892 MI 2885 General Setup submenu 134 Table 123 Keys in Backlight screen Selects parameter Selects parameter Entering into selected parameter confirms parameter Returns to the GENERAL SETUP submen...

Page 135: ...t is very important to properly set measuring equipment Measuring with wrong settings can lead to false or useless measurement results Therefore instrument and user should be fully prepared before mea...

Page 136: ...MI 2893 MI 2892 MI 2885 Measurement campaign 136...

Page 137: ...MI 2893 MI 2892 MI 2885 Measurement campaign 137...

Page 138: ...of voltage leads and current clamps current direction Voltage and current sequence should be correct to fulfil the requirements from the power quality standard positive sequence load or generation mea...

Page 139: ...to the system Additionally check if current has right direction Using U I f menu check if voltage and current have proper values Check voltage and current THD Note Excessive THD can indicate that too...

Page 140: ...ions Recording start time optional After setting recorder recording can be started see section 3 14 for recorder details Note Available memory status in Recorder setup should be checked before startin...

Page 141: ...ed Clamp on current clamp on transformers The arrow marked on the clamp on current transformer should point in the direction of current flow from supply to load If the clamp on current transformer is...

Page 142: ...m 3 phase 3 wire system 3W In order to select this connection scheme choose following connection on the instrument Figure 109 Choosing 3 phase 3 wire system on instrument Instrument should be connecte...

Page 143: ...nstrument Figure 111 Choosing Open Delta Aaron 3 wire system on instrument Instrument should be connected to the network according to figure below N Figure 112 Open Delta Aaron 3 wire system 1 phase 3...

Page 144: ...Note In case of events capturing it is recommended to connect unused voltage terminals to N voltage terminal 2 phase 4 wire system 2W In order to select this connection scheme choose following connec...

Page 145: ...ct unused voltage terminal to N voltage terminal Single phase Inverter INV1W In order to select this connection scheme choose following connection on the instrument Figure 117 Choosing single phase In...

Page 146: ...e phase Inverter system on instrument Instrument should be connected to the network according to figure below Figure 120 Three phase inverter system 4 2 2 Connection to the MV or HV Power System In sy...

Page 147: ...be connected to the network according to figure below N L2 L1 high voltage power plant measuring instruments A A A L3 xA 5A xA 5A xA 5A Transformer Type Measurement Settings Connection setup Nominal V...

Page 148: ...tup Nominal Voltage Y 1 Figure 123 Connecting instrument to the existing current transformers in medium voltage system Delta Delta N L2 L1 high voltage power plant measuring instruments A A A L3 xA 5A...

Page 149: ...inal Voltage Y 1 Figure 125 Connecting instrument to the existing current transformers in medium voltage system Star Star N L2 L1 high voltage power plant measuring instruments A A A L3 xA 5A xA 5A xA...

Page 150: ...ent range range selection on the clamps itself selection does not support auto range Note 4 Current clamp needs specific time during current range changing to stabilize the readings stabilization time...

Page 151: ...in clamp menu Note During setup current range can be observed by Measuring range 100 3000 A V row Indirect current measurement Indirect current measurement with primary current transducer is assumed i...

Page 152: ...e less than 10 of rated transformer current For such cases it is recommended to select 10 current range as shown on figure below Figure 130 Selecting 10 of current clamps range Note that if we want to...

Page 153: ...amps T 5 Clamps type will be automatically recognized by the instrument 6 User should then select clamp range Auto range or fixed one and confirm settings Figure 131 Automatically recognised clamps se...

Page 154: ...s marked with green OK sign if instrument is connected properly and measured values comply with given measurement setup Connection check is marked with yellow OK sign indicate that some measurements a...

Page 155: ...hase angle between voltage and current is less than 900 This indicate that measured current flow in the same direction as voltage Power measurements are valid Phase Phase angle between voltage and cur...

Page 156: ...ick real time clock check VIEW Selects which measurement setup should be considered Consumed or Generated AUTOSET I MI 2893 performs the most optimal clamp current range Auto range is performed automa...

Page 157: ...le detected position not valid or no satellite GPS signal reception GPS module detected satellite GPS signal reception date and time valid and synchronized synchronization pulses active Once an initia...

Page 158: ...avoid firewalls and router restrictions Communication is established in four steps 1 User selects INTERNET or INTERNET 3G GPRS or INTRANET LAN connection under COMMUNICATION menu and checks if connec...

Page 159: ...instrument to the grid or measurement point As measurement campaign can last for days or weeks it is necessary to assure reliable power supply to the instrument Additionally fully charged instrument...

Page 160: ...with PowerView is assured Once everything is connected icon will appear on the Status bar Connection status can be also observed on instrument Status bar as shown on table below Table 130 Internet st...

Page 161: ...ty Instrument serial number Phone Number Not Required Leave this field empty Secret Key Required Enter number code which was entered in instrument Communication settings menu as Secret Key Description...

Page 162: ...ally In order to establish connection PowerView v3 0 requires http connection to the internet If connection was successful a green icon and CONNECTED status will appear between Your Computer and Route...

Page 163: ...ecuted after entering Remote Connection Step 3 Remote Instrument connection to Metrel Server After the PowerView v3 0 successful connects to the Metrel Server server will check if your instrument is w...

Page 164: ...onnection made through Metrel server and establish connection If Remote Instrument connection to PowerView v3 0 was successful a green icon and CONNECTED status will appear between Router Proxy ISP an...

Page 165: ...n is displayed in green to indicate that the connection is active as shown below If it is displayed in orange colour it means that the communication was broken and it should be reinitialized by user F...

Page 166: ...a moment instrument type should be detected or an error message will be received with the appropriate explanation If connection can t be established please check your connection settings When the ins...

Page 167: ...file and saved inside your MyDocuments Metrel PowerView PQData folder This backup copy is made every time a file is created or opened to make sure that you can recover all your downloaded data in case...

Page 168: ...online scope is downloaded All tree nodes will be completely expanded when the first record is shown to enable easier channel selection You may also notice that the downloaded record node will not be...

Page 169: ...lled with data as shown on figure below Changed parameters will be sent back to the instrument by clicking on the Write button In order to remotely control instrument recorders please click on the Rec...

Page 170: ...s active while red icon indicates that recorder is stopped Additionally PowerView v3 0 will disable changing parameters during recording Trigger button in waveform or transient recorder will trigger r...

Page 171: ...MI 2893 MI 2892 MI 2885 Remote instrument connection over Internet Internet 3G GPRS Intranet LAN 171 Figure 148 Recording in progress...

Page 172: ...nt Table below shows dependencies between measurement parameters and type of network Table 132 Quantities measured by instrument Connection type Menu 1W 2W 3W OpenD 4W L1 N L1 L2 N L12 Tot L12 L23 L31...

Page 173: ...monics 0 50 Interharm 0 50 Unbalance Flicker Signalling Events L1 N L12 L23 L31 Tot N Current RMS AC DC THD Harmonics 0 50 Interharm 0 50 Unbalance Consumed Pwr Combined AC DC Fundamental Nonfundament...

Page 174: ...antities recorded by instrument Standard Profile Connection type Menu 1W 2W 3W OpenD 4W L1 N L1 L2 N L12 Tot L12 L23 L31 Tot L12 L23 L31 Tot L1 L2 L3 N L12 L23 L31 Tot Voltage RMS THD Crest Factor Fre...

Page 175: ...tive Energy Reactive Ener Power factors Connection type Menu INV 1W INV 3W L1 N L12 L23 L31 Tot N Voltage RMS AC DC THD Crest Factor Frequency Harmonics 0 50 Interharm 0 50 Unbalance Flicker Signallin...

Page 176: ...tal Nonfundament Active Energy Reactive Ener Power factors Legend Quantity included Maximal value for each interval is recorded RMS or arithmetic average for each interval is recorded see 5 1 15 for d...

Page 177: ...L23 L31 Tot L1 L2 L3 N L12 L23 L31 Tot Voltage RMS THD Crest Factor Frequency Harmonics 0 25 Interharm 0 25 Unbalance Flicker Signalling Events L1 N L1 L2 N L12 Tot L12 L1 L2 L3 Tot L2 L3 Tot L1 L2 L3...

Page 178: ...nnection type Menu INV 1W INV 3W L1 N L12 L23 L31 Tot N Voltage RMS AC DC THD Crest Factor Frequency Harmonics 0 50 Interharm 0 50 Unbalance Flicker Signalling Events L1 N L12 L23 L31 Tot N Current RM...

Page 179: ...2893 MI 2892 MI 2885 instrument including descriptions of measuring methods and logging principles 5 1 Measurement methods 5 1 1 Measurement aggregation over time intervals Standard compliance IEC 610...

Page 180: ...31 4 The instrument has internally 3 voltage measurement ranges which are automatically selected regarding to the nominal voltage 5 1 3 Current measurement magnitude of supply current Standard complia...

Page 181: ...ern Power measurement Standard compliance IEEE 1459 2010 See section 3 23 6 how to select Modern Power measurement method Please note that instrument record all measurement Classic and Modern regardle...

Page 182: ...istortion power DeV effective voltage distortion power SeH effective harmonic apparent power PH effective active harmonic power DH effective harmonic distortion power S fund positive sequence of funda...

Page 183: ...mbined fundamental nonfundamental active nonactive and apparent power and total power factor are calculated according to the following equation Total active power 3 2 1 P P P Ptot W 11 Total nonactive...

Page 184: ...ental phase apparent power fundP fundP fundP I U S VA p 1 2 3 18 Fundamental phase reactive power p p I U fundP fundP fundP I U Q sin var p 1 2 3 19 Phase displacement power factor p p p p S P DPF cos...

Page 185: ...hase current distortion power Ip fundP Ip THD S D VA p 1 2 3 26 Phase voltage distortion power Up fundP Vp THD S D var p 1 2 3 27 Phase harmonic apparent power Ip Up fundP Hp THD THD S S var p 1 2 3 2...

Page 186: ...rd compliance IEC 61557 12 See section 3 23 6 how to select Modern Power measurement method Please note that instrument record all measurement Classic and Modern regardless of selected method Instrume...

Page 187: ...Table 138 Power summary and grouping of the total power quantities Quantity Combined powers Fundamental powers Apparent VA Sv Svfund Active W P Ptot Nonactive reactive var N Qtot Line utilization PFvi...

Page 188: ...ctive power arithmetic 2 2 tot tot tot P Sa Na var 45 Total power factor arithmetic tot tot tot Sa P PFa 46 Fundamental phase power measurements Standard compliance IEEE STD 1459 2010 All Classic fund...

Page 189: ...fundtot P Sa Qa var 53 Total power factor arithmetic fundtot fundtot tot Sa P DPFa 54 All fundamental power measurements are calculated from fundamental voltages and currents obtained from harmonic an...

Page 190: ...ng recording over last completed interval It is calculated at end of each interval 3 Current integration period CUR counter measures energy during recording over current time interval Start of Recordi...

Page 191: ...ver which the Fourier transformation is performed ck is the amplitude of the component with frequency 1 10 f k fCk k is the phase of the component ck Uc k is the RMS voltage value of component ck Ic k...

Page 192: ...p 1 2 3 63 50 100 150 200 Uc k Uh1 Uh2 Uh3 Uh4 Freqency Uih1 Uih2 Uih3 Figure 157 Illustration of harmonics interharmonics subgroup for 50 Hz supply The K factor is a factor that is developed to indi...

Page 193: ...ends on the frequency and magnitude of the lighting change and on the observer Change of a lighting flux can be correlated to a voltage envelope on figure below 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1...

Page 194: ...expressed as a percentage is evaluated by 100 0 0 U U u 68 Note In 3W systems zero sequence components U0 and I0 are by definition zero The supply current unbalance is evaluated in same fashion 5 1 1...

Page 195: ...EC 61000 4 30 Class A Section 5 4 The basic measurement for event is URms 1 2 URms 1 2 is value of the RMS voltage measured over 1 cycle commencing at a fundamental zero crossing and refreshed each ha...

Page 196: ...nection type On single phase system Connection type 1W a voltage dip begins when the URms 1 2 voltage falls below the dip threshold and ends when the URms 1 2 voltage is equal to or above the dip thre...

Page 197: ...2 voltage rises above the swell threshold and ends when the URms 1 2 voltage is equal to or below the swell threshold plus the hysteresis voltage On poly phase systems Connection type 2W 3W 4W Open De...

Page 198: ...is o Phase view Ph a voltage interrupt begins when the URms 1 2 voltage of one channel fall below the interrupt threshold and ends when the URms 1 2 voltage is equal to or above the interrupt threshol...

Page 199: ...sition between two steady state RMS voltage levels It is considered as event similar to dip or swell with start time and duration between steady state levels However those steady state levels does not...

Page 200: ...mean 100 120 URms 1 2 value just prior to the RVC event and the first arithmetic mean 100 120 URms 1 2 value after the RVC event For poly phase systems the Uss is the largest Uss on any channel 5 1 1...

Page 201: ...quantity average over given aggregation interval A 10 12 cycle quantity value N number of 10 12 cycles measurements per aggregation interval 73 Arithmetic average N j j avg A N A 1 1 Where Aavg quant...

Page 202: ...ame principle arithmetic or RMS as average value but taking in account only measurement where measured value is not zero RMS active average N M A M A M j j RMSact 1 1 2 75 Where ARMSact quantity avera...

Page 203: ...ity diagram is shown on figure below GENERATED ACTIVE POWER CONSUMED REACTIVE POWER TYPE Capacitive CONSUMED ACTIVE POWER CONSUMED REACTIVE POWER TYPE Inductive GENERATED ACTIVE POWER GENERATED REACTI...

Page 204: ...ue might be unreliable 5 1 18 Waveform snapshot During measurement campaign MI 2893 MI 2892 MI 2885 have the ability to take waveform snapshot This is particularly useful for storing temporary charact...

Page 205: ...starts recording Instrument then capture URms 1 2 and IRms 1 2 values into RxxxxINR REC file and waveform samples for all voltages and currents channels into RxxxxWAV REC file If parameter PRETRIGGER...

Page 206: ...cause interrupt Figure 169 Voltage Event Triggering Voltage level instrument starts waveform recorder when measured RMS voltage reaches given voltage threshold Voltage t URms 1 2 Trigger Point Pretrig...

Page 207: ...ordings up to 200 records default value maximum number could be changed by the user up to 1500 In continuous waveform recording MI 2893 MI 2892 MI 2885 will automatically initialize next waveform reco...

Page 208: ...ger point Figure 173 Level triggering Triggering slope Slope rise t t Slope fall Figure 174 Triggering slope 5 1 20 Transient recorder Transient recorder is similar to waveform recorder It stores a se...

Page 209: ...e voltage at a network user s supply terminals in public low voltage and medium voltage distribution networks under normal operating conditions This standard describes the limits or values within whic...

Page 210: ...hall be within the range of UNom 10 and all URms values of the supply voltage shall be within the range of UNom 10 15 5 2 3 Supply voltage unbalance Under normal operating conditions during each perio...

Page 211: ...the values given in the following figure Figure 177 Mains signalling voltage level limits according to EN50160 5 2 7 Flicker severity Under normal operating conditions in any period of one week the lo...

Page 212: ...nce of short interruptions of the supply voltage ranges from up to a few tens to up to several hundreds The duration of approximately 70 of the short interruptions may be less than one second 5 2 11 L...

Page 213: ...MI 2885 EN 50160 Standard Overview 213 Figure 178 Predefined EN50160 recorder configuration After recording is finished EN 50160 survey is performed on PowerView v3 0 software See PowerView v3 0 manu...

Page 214: ...d max 32 GB supported Batteries 6 x 1 2 V NiMH rechargeable batteries type HR 6 AA External DC supply charger 100 240 V 50 60 Hz 0 4 A CAT II 300 V 12 V DC min 1 2 A Maximum supply consumption MI 2893...

Page 215: ...ent mode Antialiasing filter MI 2893 1 MSamples sec Passband 3dB 0 600 kHz Transient mode Antialiasing filter MI 2892 MI 2885 49 kSamples sec Passband 3dB 0 24 kHz Stopband 80dB 26 kHz Reference tempe...

Page 216: ...olution Accuracy 1 00 2 50 0 01 5 CFU depends on measured voltage Peak voltage U1Pk U2Pk U3Pk AC DC Measuring range Resolution Accuracy Range 1 20 00 255 0 Vpk 10 mV 100 mV 0 5 UPk Range 2 50 0 V 510...

Page 217: ...Measurements 217 Peak voltage U12Pk U23Pk U31Pk AC DC Measuring range Resolution Accuracy Range 1 20 00 422 Vpk 10 mV 100 mV 0 5 UPk Range 2 47 0 V 884 0 Vpk 10 mV 100 mV 0 5 UPk Range 3 346 0 V 3700...

Page 218: ...S A 1391 PQA 100 A 10 A 5 A 200 A 500 mA 20 A 1 3 IRMS A 1636 DC 2000 A AC 1000 A 40 A 2000 A 20 A 1000 A 1 3 IRMS A 1227 3000 A 300 A 30 A 300 A 6000 A 30 A 600 A 3 A 60 A 1 5 IRMS A 1227 5M 3000 A 3...

Page 219: ...A 0 8 IRMS A 1033 1000 A 100 A 20 A 1000 A 2 A 100 A 1 3 IRMS A 1069 100 A 10 A 5 A 200 A 500 mA 20 A 1 3 IRMS A 1391 PQA 100 A 10 A 5 A 200 A 500 mA 20 A 1 5 IRMS A 1636 DC 2000 A AC 1000 A 40 A 2000...

Page 220: ...00 A 100 A 20 A 1400 A 2 A 140 A 1 3 IRMS A 1069 100 A 10 A 5 A 280 A 500 mA 28 A 1 3 IRMS A 1391 PQA 100 A 10 A 5 A 280 A 500 mA 28 A 1 5 IRMS A 1636 DC 2000 A AC 1000 A 40 A 2800 A 20 A 1400 A 1 5 I...

Page 221: ...red on current input Measuring range Intrinsic instrument accuracy Accuracy Range 1 10 0 mVRMS 300 0 mVRMS 0 5 URMS Range 2 50 0 mVRMS 3 000 VRMS 0 5 URMS Measuring range Intrinsic instrument accuracy...

Page 222: ...A 1502 3000A A 1446 A 1503 6000A 1 7 Q With iron clamps A 1281 1000 A A 1588 150 A 0 7 Q Apparent power VA S1 S2 S3 Setot Svtot Satot 0 000 k 999 9 M 4 digits Excluding clamps Instrument only 0 5 Q Wi...

Page 223: ...50 A 0 7 Qfund Apparent fundamental power VA Sfund1 Sfund2 Sfund3 S tot 0 000 k 999 9 M 4 digits Excluding clamps Instrument only 0 2 Sfund With flex clamps A 1227 A 1445 A 1501 A 1502 3000A A 1446 A...

Page 224: ...power VA SN1 SN2 SN3 SeN 0 000 k 999 9 M 4 digits Excluding clamps Instrument only SN 1 S 1 0 SN Apparent harmonic power VA SH1 SH2 SH3 SeH 0 000 k 999 9 M 4 digits Excluding clamps Instrument only S...

Page 225: ...d U 80 UNom Accuracy values are valid if sin 0 50 I 10 INom and U 80 UNom 6 2 14Voltage harmonics and THD Measuring range Harmonic component N System freqency Resolution Accuracy UhN 1 UNom 0 50th 50...

Page 226: ...ics Measuring range Harmonic component N System freqency Resolution Accuracy UihN 1 UNom 0 50th 50 60Hz 10 mV 0 05 UNom 1 UNom UihN 20 UNom 10 mV 5 UhN UihN 1 UNom 0 20th 1 0 13th 2 0 5th 3 VFD 10 mV...

Page 227: ...tion Accuracy UOver 0 50 UNom 0 001 0 1 UNom UUnder 0 90 UNom 0 001 0 1 UNom 6 2 21 Time and duration uncertainty Standard compliance IEC 61000 4 30 Class A Section 4 6 Real time clock RTC temperature...

Page 228: ...Voltage 1 1 Current 1 1 Frequency 335 Hz 465 Hz 5 Hz 120 Hz Power 1 1 Energy 1 1 Unbalance 1 1 Flicker THD Voltage Harmonics 0 13th 0 20th 3 0 50th Current Harmonics 0 13th 0 20th 3 0 50th Voltage Int...

Page 229: ...limitation can be stored into record Signalling Signalling events without limitation can be stored into record Transients MI 2893 only Transients without limitation can be stored into record MI 2893...

Page 230: ...mpling 7 kSamples s continuous sampling per channel All channels are sampled simultaneously Recording time From 1 sec to 60 seconds Recording type Continuous consecutive waveform recording until user...

Page 231: ...od MI 2892 MI 2885 programmable Pretrigger Duration up to 50 periods max Recording quantities Waveform samples of U1 U2 U3 UN U12 U23 U31 I1 I2 I3 IN Trigger MI 2893 Transient selection measurement be...

Page 232: ...d direct voltage measurement SS Indirect current and indirect voltage measurement Temperature K50 Humidity altitude Standard Measurement characteristics Function symbols Class according to IEC 61557 1...

Page 233: ...e USig A 5 12 Underdeviation and overdeviation UUnder UOver A IEC 61000 4 30 Section and Parameter MI 2885 Measurement Class 4 4 Aggregation of measurements in time intervals aggregated over 150 180 c...

Page 234: ...the instrument is switched off before opening battery compartment cover 2 Insert batteries as shown in figure below insert batteries correctly otherwise the instrument will not operate and the batter...

Page 235: ...2400 mAh If the instrument is not going to be used for a long period of time remove all batteries from the battery compartment The enclosed batteries can supply the instrument for approx 5 to 7 hours...

Page 236: ...ieved after performing several charging discharging cycles the state of individual batteries should be determined by comparing battery voltages checking them in a cell charger etc It is very likely th...

Page 237: ...and set USB connection as shown on figure below Figure 183 Selecting USB communication 3 Click on Help Check for Firmware updates Figure 184 Check for Firmware menu 4 Version checker window will appea...

Page 238: ...s application will actually upgrade instrument FW Click on RUN to proceed Figure 187 FlashMe firmware upgrade software 7 FlashMe will automatically detect MI 2893 MI 2892 MI 2885 instrument which can...

Page 239: ...ent upgrade process should begin Please wait until all steps are finished Note that this step should not be interrupted as instrument will not work properly If upgrade process goes wrong please contac...

Page 240: ...The batteries are charged whenever the power supply adapter charger is connected to the instrument Inbuilt protection circuit controls the charging procedure and assure maximal battery lifetime Batte...

Page 241: ...will start normally 8 Version of document Document version Description of changes 4 1 4 1 Update of Standard s definitions Indoor Outdoor use Removed printer section 4 2 1 3 1 3 1 Storage temperature...

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