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Power Harmonics Analyser MI 2092 User Manual

1. fig 19 Meter Configuration Menu Use LEFT and RIGHT keys to select the appropriate connections scheme When connecting the instrument it is essential that both current and voltage connections are correct In particular the following rules must be observed e Current Clamp on CTs The arrow marked on the Current Clamp on CTs must point in the direction of current flow from supply to load If a Clamp on CT is connected in reverse the measured power in that phase would normally appear negative e Phase Relationships The Clamp on CT connected to current input connector l4 MUST be measuring the current in the phase to which the voltage probe from L1 is connected Wiring connections are shown in fig 20 fig 21 and fig 22 below On systems where the voltage is measured on the secondary side of a voltage transformer say 11 kV 110 V a scaling factor taking account of that voltage transformer ratio must be entered in order to ensure correct measurement see Section 111 3 2 5 METER Configuration 32 MI 2092 Power Harmonics Analyser Section IV Connection to power systems 1 3 4 wire system System with Neutral conductor AW 3 phase neutral fig 20 39 4 wire system 2 39 3 wire system with 3 CTs System without Neutral conductor fig 21 3p 3 wire system with 3 CTs 33 MI 2092 Power Harmonics Analyser Section IV Connection to power systems 3 39 3 wire system with 2 CTs 2 Wattm
2. In3 0 8 1 84V 12 4 4 00 fig 15 Harmonic Analysis Use LEFT and RIGHT keys to select the required bargraph and the SELECT key to choose the required input signal U4 l4 U2 l2 Us la 7 Meter This function displays the basic measured quantities AC in the 3 system The display format and legends V kV A kA W kW MW etc are automatically selected appropriate to the measured values The following quantities are displayed Phase rms voltage U1 U2 U3 Phase rms current l4 l2 l3 Per phase signed active apparent and reactive powers P S Q Power Factors with indication of direction capacitive or inductive 29 MI 2092 Power Harmonics Analyser Section III Operation manual Phase angle between voltage and current rms phase to phase voltage V 2 V23 V3 1 Total 3 signed active apparent and reactive powers P S Q Total 34 Power Factor with indication of direction capacitive or inductive System frequency Current in neutral conductor rms value U 234 5 234 5 234 5 V ix 854 3 854 3 854 3 A P 132 22 132 22 132 22 kW S 200 33 200 33 200 33kVA Q 150 49 150 49 150 49kVAr Pf 0 66c 0 66c 0 33i o 0 72 0 72 0 72 Uu 407 6 407 6 407 6 V TOTALS SEQ 123 Pow Pt 400 44 kW Fr 50 02 Hz St 554 22 kVA In 7 3 A ere Gr 116 0 72 20 05 1999 18 44 fig 16 Meter Display Screen Note In 39 systems with a 3wire connection the Instrument
3. 123 Pow 18 44 00 SEQ P jar lt E O F 20 05 1999 fig 2 Front panel MI 2092 Power Harmonics Analyser Section General information Front Panel Layout l FUNCTION switch selects one of seven functional operating menus OFF Power OFF CONFIG Instrument configuration menu RECORD Recording menu ENERGY Energy measurement SPECTRUM Harmonic analysis menu METER Basic power current amp voltage measurements SCOPE Waveforms display 8 control a LCD Graphic display with LED backlight 160x116 pixels A ESC key To exit any procedure e ESSA ENTER key To confirm new settings start recording procedure de SELECT key Enable selected signals SRE ARROW keys Move cursor and select parameters Toi LIGHT key LCD backlight ON OFF Backlight automatically turns OFF after 30 sec if no key action occurs LIGHT Increase display contrast LIGHT J Decrease display contrast Dites HOLD key Display screen is temporary frozen SCOPE METER and SPECTRUM functions only tie BELT slot For attachment of a carry strap 2 2 Connector panel on side of Meter r Ur oN FN K N b k AYA M Y eZ E E Br y e Use safety test leads only e Max permissable voltage between voltage input terminals and ground is 300 V ims Max permissable voltage between voltage input terminals
4. PASSWORD LEFT SELECT RIGHT ENTER The password is automatically cleared 5 minutes after the last key operation 3 2 System sub menu This sub menu allows setting of the password the serial port baud rate and the instrument date amp time The fourth choice is to totally reinitialise the Instrument ENABLE PASSW If the password is enabled gt CHANGE PASSW SER PORT RATE Or by pressing SELECT GSM SMS PARAM DATE TIME LANGUAGE SYSTEM REINIT Or by pressing SELECT UPGRADE CLR REC MEM Use UP or DOWN keys to select the required menu item then press the ENTER key CHANGE PASSW Enter a new four key combination and repeat it for confirmation The LCD key is not a valid password key SER PORT RATE Set the baud rate for serial communication port by using SELECT key from 2400 to 57 600 baud GSM SMS PARAM See Section VII for modem configuration Note Applicable only if modem option is enabled DATE TIME Use the LEFT or RIGHT key to select between Date and Time and the UP amp DOWN keys to set a new date or time Only valid date time values will be accepted Press ENTER to confirm the settings or ESC to cancel any changes SYSTEM REINIT Clears all settings and sets defaults values as below e Recorder START STOP MANUAL e Statistic ON e Periodic ON e Anomalies ON fixed e Main IP 1 min e Power sub IP 1 e Nominal voltage 230 V 21 MI 2092 Power Harmonics
5. FREE Memory Memory Capacity Memory Used 2032 1024 20 160 84 12 145 408 bytes Sufficient for 886 Voltage Anomalies 56 MI 2092 Power Harmonics Analyser Section VI Theory of operation Example 2 The same set up as above but Statistical Analysis is enabled Phase 1 voltage harmonics as many as possible are to be logged The Instrument can calculate a Statistical Analysis for all recorded parameters except current and voltage harmonics thus 12 channels are required for recording statistics A maximum of 64 channels can be selected for data logging The settings for Example 1 above require 12 channels leaving 48 channels free The Instrument can record harmonics up to 41 de requiring 40 channels all possible harmonics from the ge to the 41 will be recorded Thus a total 52 channels need to be set for Periodic Analysis The number of records that the Instrument can store with this setting is given by Rnmax 2032 12 1024 12 52 6 gt 6384 Record Length 12 52 6 324 bytes Thus if recording is required over one week 604 800 seconds the shortest recording interval is given by Interval 604 800 seconds 6384 94 7seconds Thus setting an IP of 2 minutes will produce 5040 record per week in memory This will leave the following memory free FREE Memory Memory Capacity Memory Used 2032 12 1024 5040 324 435 520 bytes This would allow recording over a further 44 hour
6. Power Harmonics Analyser MI 2092 User Manual Version 2 1 Code No 20 750 715 Se METREL Distributor Manufacturer METREL d d Ljubljanska cesta 77 1354 Horjul Slovenia web site http www metrel si e mail metrel metrel si C Mark on your equipment certifies that this equipment meets the requirements of the EU European Union concerning safety and interference causing equipment regulations 2000 2007 METREL No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL MI 2092 Power Harmonics Analyser Table of contents Power Harmonics Analyser assi 5 TAMANO a nas 5 2 Safety considerations 2 A A ee 6 3 Applicable standards sis en dr nr et tee 6 Section General information sens 7 o A SR e she Cee acd a ee een 7 2 IE SCHIDUGM 2s ta has Bate es Gla ee ete Slatin eta adhd Cotati eed A 8 LA FROME ARGH A Re A RA AA 8 2 2 Connector panel on side of Meter 9 2 95 BOOM VIEW O OR 10 2 A Standard ACCES SOMOS oia 11 2 5 Optional accessories ii A AAA add da 11 a A E IN ES 12 A emmener noi A E 12 JATAC Voltages sd 12 IZA CUIT ES ts id A nd beat 12 3 1 3 Reference conditions vi A A A dens 13 He DUDES e ne AN Re SE NT ae eee eon ends aie 13 e A TN 13 3 2 2 Display A a A A A AS 13 3 9 POWET SUDDIY terne A A a EAS AEREA 13 3 31 AG powersupply ane Le ns Nes 13 2 DC POWEI SUD DIY ri 13 3 4 NON volatile memory si
7. Where ic input cycle time pb power break time inside the IP ic number of cycles with Ux lt 0 02 Urange 52 MI 2092 Power Harmonics Analyser Section VI Theory of operation Total 3 Values averaged at the end of an IP Watts VAr VAr VA PF PF Current amp Frequency aPf an aa aP aPf Jaa ar al ap pn Zo aQ 2 j l e pn gt 6 aQ 2 oi as er a0 aQ aPf aor ar ap aPf lao aP Freq j aFreq pn Note If power breaks occur period pn for power calculations is modified to IP pb PUSE ic Where ic input cycle time pb power break time inside the IP 53 MI 2092 Power Harmonics Analyser Section VI Theory of operation 4 Voltage anomaly recording Voltage anomalies occur when a voltage exceeds preset boundaries The rms voltages of each half input cycle are used for comparison For every Voltage Anomaly detected the Instrument stores e Date amp time when the anomaly started e The nominal voltage e Minimum or maximum voltage during the anomaly e The previous 64 rms values calculated on half input cycles half periods before the anomaly occurred Voltage Anomaly recording is enabled on selected voltage inputs and can be calculated based either on a fixed tolerance window or on a variable tolerance window In Fixed Tolerance Mode the nominal
8. Internal operation U Phase voltage crest factor O q 100 18 x L Phase current crest factor I p 100 19 x Additional calculation using FFT transformation di du Phase voltage current i bu are calculated by FFT 9 angle VI angle for the fundamental component 63 D Phase voltage THD thd Vet 00 10 ES Ly 63 hts Phase current THD thd VE 00 11 Lx 1 hny Phase voltage Any a 100 12 es ie individual harmonics i hn Phase current Hn A 100 13 individual harmonics Tx Total values Total active power P B B B W 14 Total reactive power O 0 0 0 var 15 Total apparent power S yP 0 VA 16 E Total power factor Pf Ss 17 In a 3p systems with a normal 3 wire connection the following values are not available for displaying and recording e Neutral conductor current e Phase voltage current angle e Phase power factor MI 2092 Power Harmonics Analyser Section III Operation manual Section lll Operation manual 1 General This section describes how to operate and programme the Instrument The instrument front panel consists of a graphic LCD display nine keys and an eight position rotary switch Measured data and current instrument status are shown on the display ESC ENTER SELECT ARROW HOLD LIGHT LIGHT UP LIGHT DOWN HOLD A SELECT ee ENTER vy LIGHT fig 6 Keypad To exit any procedure To confirm new sett
9. Power Harmonics Analyser is a portable multifunction instrument for measurement and analysis of three phase power systems fig 1 1 Main features e Comprehensive real time monitoring recording and analysis of 3 power systems e Wide range of functions True rms Voltage True rms Current Power Watt var and VA Power Factor Energy Power Scope Harmonic Analysis e Monitoring of Voltage and power supply interruptions with analysis of recorded data e In recording mode measured values are stored in memory for later analysis e Minimum average 8 maximum value calculations for recorded quantities with various pre formatted reports e Oscilloscope mode for displaying waveforms both in real time and for stored waveform analysis Harmonic distortion analysis up to 6 Energy monitoring and analysis Internal rechargeable batteries RS232 communication port for connection to a PC Windows software for data analysis and instrument control 3rd harmonic both on line and on recorded data MI 2092 Power Harmonics Analyser Power Harmonics Analyser 2 Safety considerations General To ensure operator safety while using the Power Harmonics Analyser and to minimise the risk of damage to the instrument please note the following general warnings A The Instrument has been designed to ensure maximum operator safe
10. Standard value is 1 Scale factor for current inputs Defines the current equivalent to a 1 V input signal Use the LEFT and RIGHT keys to set l ange 1 V 1 A to 24 KA Standard value is 1000 A Settings for Uinp k and lrange affect all displayed values powers energies harmonic components etc Defines the method of connecting the Instrument to the 3 y systems 4w 3 4 wire system with a Neutral conductor All voltage and current inputs are used 3w 3 3 wire system without Neutral conductor 3 CTs used AARON 39 3 wire system without Neutral conductor also known as the 2 wattmeter method 2 CTs used Default mains frequency for input cycle period scanning It is ignored if the instrument detects a valid synchronisation frequency on the selected sync input Default synchronisation input Use fixed input L1 L2 L3 1 4 for synchronisation or select AUTO mode automatic scanning for a valid sync input Press ENTER to confirm new settings or press ESC to cancel 4 Recorder Data Logging Use this function to display the present data logging recording status and set the main Data Logging parameters Recording can be started or stopped from this screen To START or STOP Data Logging Press SELECT key The password entry screen is opened Enter the password After confirming the password press ENTER to start or stop Data Logging depending on current status If START is selected the i
11. all the acquired data The Request Time in the Execute menu should be increased For a Baud rate of 57600 a Request Time at least 1300 ms is recommended 45 MI 2092 Power Harmonics Analyser Section VI Theory of operation Section VI Theory of operation 1 General Data recording is one of the main functions of the instrument However while recording data for later analysis the Instrument can also carry out the following functions Statistical analysis Statistical analysis of the measured signals Periodic analysis On line recording and analysis of various measured signals over preset periods Voltage anomalies Detection and recording of voltage anomalies Power breaks Detection and recording of supply interruptions Apart from power break recording which is always enabled all the other functions are independent and can be disabled or enabled by the user The measuring principles are the same in all recording functions and are described in Section Il 2 below Averaging and statistical techniques are described later in this section Data is stored in non volatile memory and can be download to a PC for further analysis and printing Downloading can be carried out either on line while recording and or after recording has finished Independent of the recording status the Instrument can send all samples of an input signal to a PC for external analysis and viewing every second 2 Stati
12. enlarge it To alter the scaling of any of the graphs click on the vertical axis Near the top to increase the range Near the bottom to expand the scale To also show the harmonics in tabular form select Show Table from the Execute menu Moving the mouse pointer along any of the graphs will activate a curser which identifies a single harmonic with the tabular display scrolling in sympathy with the curser position To return to the main Direct Link screen select Close from the Execute menu 44 MI 2092 Power Harmonics Analyser Section V PC software NMagnitudes Execute Link Vohages Vola Ph X olaa PRN vx Fra X x Currents Ce 0 03 100 00 0 08 0 40 0 06 225 0 02 1 41 0 03 0 07 018 0 92 013 5 24 0 03 3 27 0 07 232 43 0 14 100 00 0 22 4 28 0 15 3 21 0 01 2 02 0 02 0 31 212 86 0 47 9 12 0 31 6 83 0 03 4 29 0 04 0 00 100 00 010 0 69 0 05 2 00 0 02 1 35 0 01 233 42 0 22 1 60 012 4 68 0 04 3 15 0 03 O17 0 07 017 0 00 100 00 212 65 100 00 233 08 100 00 0 19 0 40 0 06 0 15 0 22 4 33 9 20 0 54 1 26 4 34 0 19 0 39 0 08 0 18 0 16 3 22 6 64 1 89 4 40 3 24 0 02 0 05 0 01 0 02 0 03 2 03 4 32 1 35 3 15 2 03 0 02 0 03 0 02 0 05 0 04 fig 39 Direct Link Harmonic Analysis Screen with tabular display NOTE If the display appears to become frozen there is insufficient time for the display to process
13. is 600 V ms fig 3 Connector panel MI 2092 Power Harmonics Analyser Section General information Connector Panel Layout s Current Clamp on CTs Transformers l4 l2 13 input terminals PRE Voltage L1 L2 L3 input terminals uc RS 232 connection for connection of the PHA to a PC External power socket fig 4 External power socket 2 3 Bottom view DISCONNECT ALL TEST LEADS AND SWITCH OFF THE INSTRUMENT BEFORE REMOVING THIS ACCUMULATOR HAZARDOUS VOLTAGE POWER SUPPLY 4x1 2V NiCd NiMH IEC LR14 RECHARGEABLE VOR OFFNEN DES AKKUMULATORS ALLE ZULEITUNGEN VOM GERAT ENTFERNEN UND DAS GERAT AUSSCHALTEN GEFAHRLICHE SPANNUNG STROMVERSORGUNG 4x1 2V NiCd NiMH IEC LR14 AUFLADBAR 20 224 266 fig 5 Bottom view 10 MI 2092 Power Harmonics Analyser Section General information Bottom View Layout 2 Plastic cover fixes nylon strap to the instrument There is a screw under this cover that needs to be unscrewed when opening the instrument for service or calibration purposes ZA The Instrument contains no user serviceable parts Service or calibration must only be carried out only by an authorized dealer Screw unscrew to remove carrying strip or to open the instrument Label with measurement ranges Battery fuse compartment cover Retaining screw unscrew to replace batteries or blown fuse Rubber foot NOOB 2 4 Standard accessories Current probes
14. not records Power Break 6 Memory usage The non volatile memory in the Instrument can be used in one of two ways Linear mode In linear mode recording the Instrument stores data in memory until full and then stops recording Thus the oldest data is always preserved irrespective of the amount of recordable data Roll over mode When recording in roll over mode the Instrument will over write old data when memory is filled Thus the latest data is always preserved irrespective of the amount of data recorded with the older data being possibly lost Data logging capacity in linear mode depends on the number of channels selected for recording the type of data recorded the IP and the number of voltages anomalies detected It is automatically calculated by the PC software when selecting channels for logging and is given by the following equation Maximum number of records in Periodic Analysis Rnmax is given by 7 2032 Ng 1024 N 164 N nax Ro Where Rlen Record length Rin 12 X 64 Y 12 Nstat N of channels selected for Statistical Analysis All being selected for Periodic Analysis but excluding harmonics Nano N of voltage anomalies which occurred while recording X N of channels selected excluding power channels Px Qx Ptot Qtot Stot Y Power channels Note Estimating Voltage Anomalies 55 MI 2092 Power Harmonics Analyser Section VI Theory of operation Nano can be estimated with e
15. voltage is set by user and the high and low limits are set as a percentage of nominal voltage In Variable Tolerance Mode the nominal voltage is calculated and is the average voltage during the previous anomaly integration period settable between 1 and 900 seconds The new nominal reference voltage can be up to 30 of programmed nominal voltage High and low limits are set as a percentage of the nominal voltage and can be between 1 and 30 of the nominal voltage U rms half input cycle period 10 ms 50Hz max value ranma e eens oe ee 4 rms values of last 64 half periodes will be saved hi limit nomina Por coronccncoros low limit duration fig 43 max value reference change reference 7 low limit rota rms values of last 64 half duration N NE fig 44 54 MI 2092 Power Harmonics Analyser Section VI Theory of operation 5 Power breaks recording If data logging is in progress the start of every OFF state of the instrument is treated as a Power Break This OFF state occurs either if the instrument is switched OFF using the rotary switch or if it lose its power supply For each Power Break the instrument logs the date amp time of both the beginning and end of the power break and the cause of the power break manual or loss of supply Note The battery must be in the instrument otherwise its power supply drops to fast and it can
16. 0 Hz and 60 Hz double click on the Frequency field Sync Input Frequency Synchronization Input Select the input using PgUp PgDown keys Type of Select the type of Data Analysis available for higher instruments recording Recording type En x o Mw avetorm f Fast logging A ransients CC ENSO160 fig 28 Recording Set up screen To view and set details on the Periodics recording click on DETAILS button fig 29 Details screen for periodic recording 39 MI 2092 Power Harmonics Analyser Section V PC software 2 Data logging amp analysis Remote Start button Start Recording Remote Stop button Stop Recording Download button Download data from instrument to the PC Analysis button Analyse Data The File settings and Analyses menu is displayed EN File settings and analysis Execute User text Wires Power Ip 1 f Selected signals Progr start time Progr end time Real start time Real end time Frequency U nominal v Main int period Anom rec condit Recording Periodics Anomalies Power breaks Memory type U range U factor 10 36 MANUAL MANUAL 15 06 1999 23 32 00 16 06 1999 07 52 50 5D 220 0 1 Fixed anomalies LL 10 HL 10 sta ano per 9072 0 0 circular passed 600 1 em Pe e iaa 7 MIE 2 n thdU1 thdU2 thdU3 thai thdl2 thdlB Selected 2 39 fig 33 Data Logging Set up and Status screen Recorded
17. Analyser Section III Operation manual Up Down limits Buffer mode Selected channels Selected harmonic Voltage multiplier K Current range Connection Sync frequency Sync input Serial port rate 10 roll over none none 1 1000 A AW 50 Hz AUTO 57600 UPGRADE The possibility for later implementation of modem by order The instrument serial number must be attached to an order for the code Use UP DOWN keys for increment decrement number of selected place and LEFT RIGHT to select place Note It is only necessary to enter the code once and is valid also for later software upgrades 3 3 Recorder Data Logging sub menu Use this sub menu to set Data Logging parameters and log START STOP conditions Note that actual starting or stopping can only be effected from the main RECORD menu start 18 05 1999 14 25 stop MANUAL stat ON per ON anom window FIXED main integ per 1 min power sub i p 1 ppr nominal voltage 220 0 V upper limit 10 242 0 V lower limit 10 198 0 V buffer mode circular 20 05 1999 12 44 00 Use UP or DOWN key to select the appropriate parameter START and STOP There are two ways of starting and stopping recording In Manual mode recording starts immediately if period recording is OFF If Periodic Recording is ON there is a null seconds delay STOP in manual mode is immediate MI 2092 Power Harmonics Analyser Section III Opera
18. ERGY Total and subtotal cumulative register energy counters Further information on the functions available in RECORDING Mode is available under THEORY OF OPERATION The instrument can also be used for real time measurement available on the left side of the rotary switch These function are independent of recording status SPECTRUM Harmonic Analysis METER Basic measurements on three phase systems Real time ineasuremente SCOPE Oscilloscope displays of measured waveforms OFF All settings are saved Warning given if recording is in progress MI 2092 Power Harmonics Analyser Section III Operation manual 2 Off Selecting OFF turns the instrument OFF after 2 seconds All current settings and set parameters are saved during this period in non volatile memory If switching OFF occurs while the instrument is set for recording this is treated as a POWER BREAK and the date amp time of Power OFF is saved This will also occur if the instrument loses its power supply while recording see section 11 3 5 Power Break Recording If the instrument is set for recording this will be indicated on the display irrespective of the position of the rotary Selector Switch Rec On Recording in progress Rec Wt Waiting to start recording SEND Instrument is sending data to a PC HOLD Display contents temporarily frozen In SCOPE METER and SPECTRUM functions only 3 Config Use this menu to set all pa
19. Please contact your GSM provider for the DATA number Application described in this manual is based on Siemens TC35 GSM terminal modem and US Robotics Faxmodem standard analog modem For a third party modem device apply appropriate settings as required by modem vendor We recommend preparing a test system for verification and training before performing actual measurements at the remote place Required accessories Standard analog modem external GSM modem Modem Modem RS232 interface cable RS232 interface cable Modem power supply Modem power supply Active standard phone line Antenna PIN card with active data mandatory and voice optional phone numbers 58 MI 2092 Power Harmonics Analyser Section VII Modem data transfer Notes 3 For GSM system pay attention to install its antenna at the appropriate place with good signal condition If modem communication is enabled it is not passible to transfer data from the instrument to the PC using RS232 connection To enable direct RS 232 connection between the instrument and PC you should disable modem communication in Power Link and on the instrument Modem ins and power link configuration 3 1 Power Link configuration Power Link software should be configured before establishing modem communication The following procedure is required Run Power Link application Select Communication Settings menu and enable modem communication see the foll
20. Q or PF symbol PF power factor n harmonic number with H or h symbol Cos voltage current phase angle a average with any general symbol THD total harmonic distortion m max or min with any general symbol H individual harmonics na not available h individual harmonic V or A pn N of input cycles in integration period IP IP integration period hpn N of input cycles for harmonics in IP pn 8 dPF power factor of basic harmonic ppn N of input cycles for powers upn N of input cycles for voltages PC personal computer cr crest factor pb power break time inside IP 47 MI 2092 Power Harmonics Analyser Section VI Theory of operation input NAV AV VV VV V IP i I IP IP I power power es break break AA pn ppn ppn ppn upn upn upn hpn hpn p p Hi o p2 hpn l l i upn hpn ppn p1 p2 Input Cycles used for calculation under various Power Break situations fig 40 48 MI 2092 Power Harmonics Analyser Section VI Theory of operation When measuring Power and Power Factor values can be calculated for each individual cycle or averaged over a period the Power sub IP which can be set at any value between 1 and 20 cycles a 400 ms window at 50Hz If the Instrument is recording a power it automatically calculates and records the energy of the selected power in an IP Values used for the calculation of maximum and minimum Powers and Power Factors are the ave
21. Reactive inductive energy EQi in kvar To reset the Total and or Subtotal registers 1 Press SELECT key The password entry screen is opened 2 Enter the password 3 After confirming the password press ENTER to reset the Subtotals or ESC to quit 4 After resetting subtotals press ENTER to reset the Totals or ESC to quit 28 MI 2092 Power Harmonics Analyser Section III Operation manual m LAST IP lines Display energy in last integration period if data logging is active Active positive energy Ep inkWh Reactive positive capacitive energy EQc in kvar Reactive positive inductive energy EQi in kvar Active negative energy Ep inkWh Reactive negative capacitive energy EQc in kvar Reactive negative inductive energy EQi in kvar NOTE At least one signal from Signal Sub menu fig 10 and Periodics ON from Configuration Sub menu fig 9 must be selected 6 Spectrum Harmonic Analysis This function displays the results of Fast Fourier Transformation FFT calculations both as values and in graphic mode Graphs are auto scaled in order to ensure maximum resolution The top line provides information on the selected input U 1 l4 Uz l2 Us la its absolute value and the synchronisation frequency The bottom line provides details of the selected harmonic component and its absolute and percentage values The equivalent bargraph is identified by a blinking cursor 234 5V 50 02Hz Me thd 3 7
22. T RECORDING FOR ANALYSIS EDIT INSTRUMENT SETTINGS DOWNLOAD DATA FROM INSTRUMENT FILE fig 24 Basic opening screen The Basic opening screen is the starting point for all actions It provides general information about the Instrument and by clicking on toolbar buttons or selecting pull down menus access to all functions The buttons provide access to Download of data Setting Instrument configuration parameters Analysis of downloaded or previously saved data Direct Link Operating on line with the Instrument Data Logging START STOP To set the instrument configuration parameters double click on Settings the programme will download current settings from the instrument and display them on the screen 36 MI 2092 Power Harmonics Analyser Section V PC software 1 Instrument set up To set the instrument configuration parameters double click on Settings the program will download current settings from the instrument and display them on the screen Instrument settings p x Execute Manufacturer Type of instrument Serial number Lost calibr date User note Instrument baud rate 57600 U factor 1 U nominal 1 7 I range A 1030 Connection 4 wires Frequency Hz s50 Sync input auto Type ol recording Penodics D tails Send Read Close Help fig 25 Instrument settings screen The Instrument settings screen contains the instrument data and parameters
23. ard Clamp on CT Resolution 0 3 mV 0 3 Amp with the standard Clamp on CT Accuracy 0 5 of reading 6 digits plus current transformer accuracy Crest factor 2 5 Maximum permissible overload 150 ln sinusoidal current Maximum input voltage 1 Vrms Accuracy of standard Clamp 1 20 A 1000 A phase Error 2 0 5 Use double insulated minimum CAT III 600V Clamp on CTs and or current transformers MI 2092 Power Harmonics Analyser Section General information 3 1 3 Reference conditions AC voltage for power measurements 0 02 Un Un AC current 0 02 In In Power factor four quadrants 1 00cap 0 00 1 00jnd Frequency 45 65 Hz Waveform Sinusoidal AC voltage and current Distortion factor lt 2 Auxiliary power supply 230 V 10 Ambient temperature 23 C 3 C Humidity 60 15 3 2 Outputs 3 2 1 Communication RS232 serial interface for connection to a PC fully opto isolated Selectable 2400 57 600 baud 9 pin D type connector Communication cable supplied 3 2 2 Display Graphic Liquid Crystal Display with LED backlight 160 x 116 dots resolution 3 3 Power supply 3 3 1 AC power supply Operating range 230 V AC 10 20 overvoltage category III 45 65 Hz 8 VA Fuse F2 T100 mA 250 V in the battery compartment 3 3 2 DC power supply Internal 4 x 1 2 V NiCd or NiMh rechargeable IEC LR14 batteries provide full operation for up to 5 hours Internal battery ch
24. arger charging time approx 10 hours Fuse F1 T630 mA 250 V in the battery compartment 3 4 NON volatile memory 2048 Kbytes SRAM battery backed MI 2092 Power Harmonics Analyser Section General information 3 5 Harmonics measurement The instrument computes harmonics on signals sampled with an A D converter Table 1 Limits of error and resolution in Harmonics measurement Range Limits of error Resolution I Ur THD HD on LCD and PC 2 100 0 2 x UU 1 1 0 2 x UU l l 0 1 Note THD Total Harmonic Distortion HD Harmonic Distortion U Urange lr lrange 3 6 Digital hardware specifications A D conversion 14 bit with 128 samples per channel per period 43 68 Hz 3 7 General specifications Working temperature range 10 C 45 C Storage temperature range 20 70 C Max humidity 85 RH 0 40 C Pollution degree 2 Protection classification double insulation Overvoltage category Voltage inputs CAT III 600 V 300 V to gnd AC power supply CAT III 300 V Protection degree IP 64 Dimensions 265 x 110 x 18 5 mm Weight without accessories 2 kg 3 8 Maintenance 3 8 1 Batteries Instrument contains rechargeable NiCd or NiMh batteries Do NOT replace With alkaline cells These batteries should only be replaced with the same type as defined on the battery cover label or in this manual Hazardous voltages exist inside this Instrument Disconnect all test leads remove the power su
25. does not display values for the 3 phase The central TOTALS line may then display two additional messages seq When three phase system is not connected in the correct phase sequence L L2 L3 pow When active power in one or more phase is negative Note Frequency will be displayed in inverse if the instrument is unable to find a valid sync input The default sync frequency as defined elsewhere is used 8 Scope Oscilloscope Function This function provides signal waveform displays together with summary details of the signal The displayed signals are auto scaled to suit the display and may vary dependant on the total harmonic distortion The top line provides information about the selected input U 4 l4 U2 l2 Us la its value and the synchronisation frequency 30 MI 2092 Power Harmonics Analyser Section III Operation manual 234 5V 854 3A HOLD 12 4 4 00 fig 17 Scope Display without display of additional information Use the SELECT key to toggle between the signal display options L4 L2 L3 3U 31 L4 Display of additional information is controlled by toggling the ENTER key To scale voltage waveforms Use LEFT or RIGHT keys To scale current waveforms Use UP or DOWN keys 234 5V 854 3A HOLD Fr 49 99 Hz Um 321 5 V Ua 130 2 V Uthd 2 7 Ucf 1 37 Pf 0 66c Im 1248 A la 588 2 A Ithd 3 5 Icf 1 45 12 4 4 00 fig 18 Scope Display w
26. e Current clamp on CTs model S 1000 A 1 V 3 pcs e Current transformers optional Voltage cables Current cables Probe tips 3 pcs Alligator clips 4 pcs Voltage measurement cables 6 pcs Mains cable RS 232 cable Soft carrying bag Instruction manual Product verification data Warranty declaration Windows PC software e PC analysis and control software package 2 5 Optional accessories See attached sheet for a list of optional accessories that are available on request from you distributor 11 MI 2092 Power Harmonics Analyser Section General information 3 Specifications The instrument s technical specification below details the performance standard or limit to which the instrument has been designed and tested 3 1 Inputs 3 1 1 AC Voltages Dra ia has a three phase AC voltage input 3 differential inputs L 4 N4 L2 2 37 IN3 Voltage measurement is direct with internal voltage dividers There are no internal fuses in the voltage inputs CAT Ill 600 V 300 V to GND o Input range 10 550 Vrms 0 02 Un Un Permissible overload 600 Vrms Resolution 0 1 V Accuracy 0 5 of reading 2 digits Crest factor max 1 4 Frequency range 43 68 Hz fundamental 3 1 2 AC Currents The instrument has three AC current inputs suitable for Clamp on CTs or other current sensors Input range 0 02 1 Volt rms 0 02 In In Equivalent to 20 1000 Amp with the stand
27. e phone when GSM modem communication is enabled Messages are intended to inform the operator about some events regarding the instrument The following events can be sent as SMS messages Less than 50 of recording memory is free Less than 20 of recording memory is free Recording memory is full WAVEFORM FAST LOGGING TRANSIENT EN50160 or PERIODICS recording is finished For SMS messaging prepare the following configuration ENABLE PASSW GSM SMS PARAM gt ENABLED gt gt DISABLE DATE TIME CPIN LANGUAGE DEST XXXXXXXXXXXX SYSTEM REINIT USERID XXXXXXXXXX CLR REC MEM SEND TEST MESSAGE Enter Destination phone number DEST phone number of the mobile phone that will receive SMS messages from the instrument using cursor keys Enter user ID USER ID optional instrument identification string using cursor keys as described in chapter 3 4 Provide PIN card of modem terminal with the number of your local It can be done with SEND TEST MESSAGE command in GSM SMS PARAMETERS menu of the instrument Press Enter to confirm settings or ESC to discard them Note SMS message cannot be sent if modem communication is established lf you do not want the instrument to send SMS disable GSM SMS PARAM and set baud rate to 9600 63
28. enu The selected harmonics are valid for all the selected phases Ls L2 L3 as shown at the top of the screen It is not possible to set different combinations for individual phases Selecting one or more harmonics will automatically select THD measurement Press ENTER to confirm the new settings or ESC to cancel 3 5 Meter sub menu This menu allows setting of various input parameters These parameters are used for calculating the true rms values of all measured and calculated quantities for scaling input signals and for synchronisation METER Configuration Unomin V 230 0 V Uinp K 1 Irange 1V 1000A connection 4wire sync freq 50 Hz sync inpt auto last calb 18 06 2001 09 18 fig 12 Meter Configuration Sub menu Use the UP and DOWN keys to select the required parameter 25 MI 2092 Power Harmonics Analyser Section III Operation manual Unomin V Uinp k lrange 1V NOTE Connection Sync freq Sync inp Nominal measuring range of instrument voltage inputs It is used for calculation and display of results only Default value is 230 0 V Range from 50 0 V to 450 0 V Scaling factor for voltage inputs This allows for external voltage transformers or dividers that may be used and ensures that readings are related to the primary e g for 11 kV 110 V the multiplication factor must be set to 100 Use the LEFT and RIGHT keys to set Uinp k from 1 to 800
29. eter connection fig 22 3p 3 wire system with 2 CTs 2 Wattmeter connection 34 MI 2092 Power Harmonics Analyser Section IV Connection to power systems WARNING Connecting to Current Transformers A The secondary of a current transformer must NOT be open circuited A when on a live circuit An open circuit secondary can result in a dangerously high voltage across the terminals power plant measuring instruments Ay high rs a voltage lt lt El 20 A ANNE L2 WA L3 fig 23 Connecting to existing CTs on a high voltage system 35 MI 2092 Power Harmonics Analyser Section V PC software Section V PC software The Power Harmonic Analyser is supplied complete with a powerful suite of Windows software that can be used for e Configuring the Instrument e Setting measurement parameters e Download of recorded data e Off line analysis of recorded data e On line capture and analysis of current voltage and power signals The software also provides the necessary tools to allow measured data etc to be included in various reports The Minimum requirement for running the software is the ability of the PC to run Windows 98 SN Power Link v3 2 lol x File Modem Data Config Help SENTE Ixe k 281 REMOTE CLEAR MEM HANG UP EXIT COMMUNIC MAKE MODEM PORT CHANGE COMMUNIC SETTINGS LANGUAGE PRINTER SETTINGS HELP REMOTE START DIRECT LINK REMOTE SCOPE STOP SELEC
30. fields and buttons Buttons are Details To edit the parameters of Periodics Send To send Set up parameters to the instrument Read To download Set up parameters from the instrument Close To close this settings screen Help To run online help To change values on parameter fields double click on the specific field and select between the available options User note This field is available for entry of any text Name Survey Reference etc Instrument Baud Increment Decrement the value using PgUp PgDown keys or Rate double click to the following dialog see Fig 26 37 MI 2092 Power Harmonics Analyser Section V PC software RERO gt Por setings C OOM oom r Cows OIM D OoM4 COM C 2400 bps 19200 El F 4800 bps C 38400 bps E C 9600 bps 57600 bps Modem setings M Enable madam ink r r fig 26 Baud Rate Set up screen U factor Voltage Transformer Ratio Increment Decrement the value using PgUp PgDown keys U nominal Nomonal Voltage Increment Decrement the value using PgUp PgDown keys I range A Scale Factor for the Current Transformers Increment Decrement the value using PgUp PgDown keys Connection Select the System Connection Note Aaron is a 3 wire measurement with 2 current transformers Connection X A wires C 3 wires C Aaron Cancel fig 27 Connection screen 38 MI 2092 Power Harmonics Analyser Section V PC software Frequency Hz To toggle between 5
31. ical Analysis of recorded data can be displayed in both numerical and graphic format Exsoute 192 00 208 00 070 400 520 005 208 00 224 00 004 22 00 8 00 001 224 00 240 00 007 A 00 20 00 007 240 00 256 00 003 60 00 64 00 007 272 00 288 00 002 80 00 84 00 00 AO ANN fig 37 Statistical Analysis screen 43 MI 2092 Power Harmonics Analyser Section V PC software 3 Direct link The Direct Link facility allows direct on line operation with real time values from the voltage and current inputs displayed on the screen Complex calculation can be carried out and selected input signals waveforms can be saved can be exported to an ASCII file or to the Clipboard for use with third party analysis tools To open the connection to the instrument click on the go button S Direct link Execute Link Urme 0 ins ca MU 96 MT CEP Loc S kVA POAW ovan fed fig 38 Direct Link oscilloscope screen To read Energies from the instrument click on the Eng button A small window showing the current values of the energies is displayed To look at Harmonics both Voltage amp Current click on the Mag button The harmonic analysis screen is displayed with six histograms three voltage and three current showing harmonics up to the 63 To zoom in any histogram click on Execute and Show Table Click on separate histogram to
32. ings start recording procedure Enable selected signals Move cursor and select parameters Display screen is temporary frozen SCOPE METER and SPECTRUM functions only LCD backlight ON OFF Backlight will automatically turn OFF 30 seconds after the last key operation Increases display contrast Decreases display contrast Display Freeze In SCOPE METER and SPECTRUM functions only NOTE Throughout these instructions the up arrow key is called the UP key the right arrow key the RIGHT key the down arrow key the DOWN key and the left arrow key the LEFT key One of seven functional operating menus can be selected with the rotary selector switch MI 2092 Power Harmonics Analyser Section III Operation manual OFF CONFIG RECORD ENERGY SPECTRUM METER SCOPE The instrument s Power OFF Instrument configuration menu Data Logging Recording menu Energy measurement Harmonic analysis menu Basic power current amp voltage measurements Waveforms display 8 control fig 7 Instruments rotary selector switch main design function is the logging of various parameters on power distribution systems Logging functions are selected on the right side of the rotary switch OFF All settings are saved Warning given if recording is in Recording progress 7 mod CONFIG General configuration Submenus cover specific functions RECORD Data logging and monitoring EN
33. instrument also displays the reason for stopping the recording MANUAL BREAK Manual stop in AUTO stop mode END OF MEM Memory full in linear memory mode statist Statistical Analysis enabled ON or disabled OFF anomal The number of detected and saved Voltage Anomalies If currently in a Voltage Anomaly a blinking arrow points to the number 27 MI 2092 Power Harmonics Analyser Section III Operation manual For Periodic Analysis there are four further information lines periods Number of recorded periods from start of data logging int pr Current integration period IP in seconds max Aprox max number of periods that can be saved in Linear Buffer mode only remain Remaining time in the current integration period powerN of power ON OFF events during the current recording period 5 Energy This function displays the various energy registers EP 000000000 0 kWh EQC 000000000 0 kVArh Qi 000000000 0 kVArh SUBTOTAL EP 000000000 0 kWh EQC 000000000 0 kVArh EQi 000000000 0 kVArh EP 00000 0 kWh EQc 00000 0 kVArh EQi 00000 0 kVArh EP 00000 0 kWh EQc 00000 0 kVArh EQi 00000 0 kVArh fig 14 Energy Registers m Top three lines Total cumulative registers of Active energy Ep in kWh Reactive capacitive energy EQC in kvar Reactive inductive energy EQi in kvar m SUBTOTAL lines Subtotal cumulative registers of Active energy Ep in kWh Reactive capacitive energy EQC in kvar
34. ith display of additional information 9 Frequency and overload information METER SCOPE and SPECTRUM screens The synchronisation frequency is measured on the input selected in the meter configuration menu L L2 L3 or l4 If no valid frequency can be detected after software filtering the Instrument will if in AUTO mode scan the other channels for signal that could be used for synchronisation If no stable frequency signal can be found the Instrument will use the default 50 60Hz frequency selected in the METER configuration menu and display this frequency value in inverse If an input overload is detected voltage input gt 550 V ac or current input gt 2 V ac or if there is a peak over range 770 V for voltage inputs and 2 5 V for current this will be indicated on the instrument display by a black arrow pointing to the particular input 31 MI 2092 Power Harmonics Analyser Section IV Connection to power systems Section IV Connection to power systems A Warning A This Instrument requires connection to dangerous voltages This instrument can be connected to the 3 system in 3 ways e 3 four wire system Ly Lo L3 N l4 l2 Is o 30 three wires system L12 L23 L31 la Io l3 e Aaron 2 wattmeter 3 connection L12 L32 l4 lo The actual connection scheme must be defined in METER Configuration menu see fig 19 below METER Configuration Uinp k 1 Irange 1V 1000A sync freq 50 Hz sync inpt auto
35. nstrument checks the currently set recording parameters before starting to log data 26 MI 2092 Power Harmonics Analyser Section III Operation manual rec stat Files buf mode READY circ start AUTO 18 05 1999 14 25 00 stop MANUAL 20 05 1999 10 38 10 statist OFF anomal 3 periods 14 int pr 60s max 2384 remain 17s 0 fig 13 Recorder Data Logging Menu rec stat Present recorder status WAIT Recorder in AUTO mode is waiting for start date amp time RUN Recorder is running STOP Recorder in AUTO mode has been stopped manually Recording aborted COMPLETE Recording completed buf stat Present recorder memory status EMPTY No data in memory READY Data present awaiting download SAVED Data present previously downloaded Buffer operating status mode lin Memory in Linear mode Circ Memory in Roll over mode cir laps Memory in Roll over mode current Lap number start If the instrument is in Rec Wait mode and the memory is empty the programmed START date amp time is displayed If instrument is in Rec Run mode the actual recording start date 8 time as opposed to programmed is displayed stop If the instrument is in Rec Wait or Rec Run mode the programmed STOP date amp time is displayed If the instrument is in Rec Stop or Rec Complete mode the actual recording stop date amp time as opposed to programmed is displayed Under certain circumstances the
36. out only by an authorized dealer MI 2092 Power Harmonics Analyser Section Il Internal operation Section Il Internal operation 1 Introduction This section contains technical information on the internal operation of the Power Harmonics Analyser including descriptions of measuring methods and recording principles 2 Measurement methods Measurement methods are based on the digital sampling of the input signals Each input 3 voltages and 3 currents is sampled 128 times in each input cycle Duration of this input cycle depends on the frequency at the synchronization input one of the 3 voltage inputs or a current input At 50 Hz the input cycle period is 20ms Basic measured values are calculated at the end of each sampling period and the results are available on the display or are recorded FFT based results are only calculated on every gt input cycle every 160ms 50Hz The following equations are used for computing the given quantities Basic calculations Parameter Equation for calculation Unit Formula N Phase voltage E u V 1 Phase current I as rid A 2 Ne Phase active power RS Du W 3 LE 2 Phase to phase voltage U ES q u V 4 A ns Neutral conductor current J eee i i A 5 Additional calculation using basic values Phase apparent power S U I VA 6 Phase reactive power O JS P var 7 P Phase power factor PF Ss 8 x MI 2092 Power Harmonics Analyser Section Il
37. owing figure x Pensatings E OMI M QCM3 F COMS COME COMA r COMBS 2400 bps 79200 bps C 4600 bps F 38400 bps w 9600 bps C 57600 bps Modern senne Enable modern ink Local modern connected to PC is Standard modam FP Pulse doling GSMmodem PIN Torgetmodem connected to instrument ts C Standard modam E GSM modem FIN E Target tel number Eu He Select GSM or Standard modem for local and standard modem Enter PIN codes for local modem connected to PC and target modem connected to the instrument if required Enter the phone number of the target modem connected to the instrument the program will communicate with Set suitable baud rate Save the settings 59 MI 2092 Power Harmonics Analyser Section VII Modem data transfer Note Serial port baud rate is automatically set to 9600 Bauds for GSM modem and cannot be set to any other rate Take care that all devices PC both modems and instrument are set to the same baud rate 3 2 Modem configuration at the PC side The modem connected to the PC should be configured before use The PC with internal modem does not need any external extension For external modem do the following Connect the modem to the unused COM port of the PC using RS232 interface cable The modem and PC should be switched off when connecting them together Switch them on and wait until the PC finishes its initialization sequence Insert PIN card in
38. part of standard Windows setup You can find it on your PC Programs Accessories Communications Hyper Terminal 3 4 Instrument configuration for modem communication Instrument should be configured before communicating with the PC via modem communication The following procedure is required Modem should be connected to the instrument Switch the instrument on Switch the modem on In SYSTEM menu select SER PORT RATE GSM SMS PARAM DISABLED for Standard analog modem In SYSTEM menu select SER PORT RATE GSM SMS PARAM ENABLED for GSM modem it enables sending of SMS messages ENABLE PASSW GSM SMS PARAM gt ENABLED gt gt DISABLE DATE TIME CPIN XXXX LANGUAGE DEST SYSTEM REINIT USERID CLR REC MEM SEND TEST MESSAGE Enter PIN code using cursor keys UP DOWN to increment decrement selected number and LEFT RIGHT to select previous or next number for GSM modem Press ENTER to confirm entry or ESC to discard it you want to disable sending of SMS messages when using GSM modem you should set GSM SMS PARAM to DISABLED and set SERIAL PORT RATE to 9600 If a GSM modem is used on the PC side and Standard modem is used on the instrument side baud rate of 9600 bps must be used for the standard modem 61 MI 2092 Power Harmonics Analyser Section VII Modem data transfer 4 Modem connect with pc and instrument front view front vie
39. ping of Data Logging is effected from the RECORD menu 3 4 SIGNALS and HARMONICS sub menus These menus allow selection of signals harmonics and calculated parameters for storage while Data Logging recording A maximum of 64 signals can be selected the number of free locations is shown in the upper right corner of the display RECORDER signals S Pfc Qit S Pfi Pfi Qi P P c Qc dPf EX s MA Fe Qs S Pfi Pfi Qi P P Qc dPf S Pfc Qi S Pfi Pfi Qi P P Qc Es dPf i DE GE ti EN S Pt Ptc Piti HI S Qtc Qtc Qti Qti Uu fig 10 Signal Sub menu 24 MI 2092 Power Harmonics Analyser Section III Operation manual RECORDER harmonics 47 enabled on L2 L3 thd thdU thd harmonics WU 02 GH 04 OA 06 MH os PE 10 11 12 13 14 15 16 17 P18 19 20 21 22 23 24 25 26m27 28 2930r SSP 34 35 36 37 38 39 40 41 DE CE 1 CH 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 fig 11 Harmonics Sub menu Use LEFT RIGHT UP and DOWN keys to select the required signal Enable or disable the signal for recording with the SELECT key Signals sub menu Select per phase and or total 36 values Selecting a voltage signal U will also automatically enable logging of Voltage Anomalies for that phase if Voltage Anomaly recording mode is selected as FIXED or VARIABLE Harmonics sub m
40. pply cable and switch off instrument before removing battery compartment cover If it is necessary to replace batteries all four MUST be replaced Ensure batteries are installed with the correct polarity incorrect polarity can damage the batteries and or the Instrument MI 2092 Power Harmonics Analyser Section General information There may exist special environmental regulations concerning the disposal of batteries These must be followed A In case of blown battery fuse F1 this should be replaced with the same type as defined on the label close to it 3 8 2 Cleaning To clean the surface of instrument use a soft cloth slightly moistened with soapy water or alcohol Then leave the instrument to dry totally before use e Do not use liquids based on petrol or hydrocarbons e Do not spill cleaning liquid over the instrument 3 8 3 Periodic calibration To ensure correct measurement it is essential that the Instrument be regularly calibrated If used continuously on a daily basis a six monthly calibration period is recommended otherwise annual calibration is sufficient 3 8 4 Service For repairs under warranty or at any other time please contact your distributor Manufacturer s address METREL d d Ljubljanska 77 1354 Horjul Slovenia Tel 386 1 75 58 200 Fax 386 1 75 49 095 E mail metrel metrel si The Instrument contains no user serviceable parts Service or calibration must only be carried
41. rage values calculated on power sub IP values see fig 35 below Recording of voltage or current THD is automatically enabled if one or more individual voltage or current harmonics are selected A P 20 ms 50Hz P6 Pmax P6 P Sub IP 5 e e P PetP7 Pe PotPo 5 Pmax Pb nee co PAPAS pa PERO A e o P PtP tP 5 Pmin Pa e a 12 3 E ne t T T T T T T T T T T T T T T gt Examples of calculation of Maximum amp Minimum values for various Power sub IP periods fig 41 49 MI 2092 Power Harmonics Analyser Section VI Theory of operation Minimum amp Maximum PER PHASE Values LOAD TYPE VALUE CONSUMNIG GENERATING Note inductive capacitive inductive capacitive formula OCO npe EEN O O A ee ee 12 mibn PH 13 max only Available Maximum amp Minimum per phase Values for each Input Cycle Note Uxthd Ixthd cos x UxHn IxHn are calculated every 8 h input cycle Minimum amp Maximum TOTAL 3 Values IA LOAD TYPE E VALUE CONSUMNIG GENERATING Noe inductive capacitive inductive capacitive formula C mme 0 BE l o AS A 14 Oooo loo G O mFrgqo reg Available Maximum amp Minimum 3pValues for each Input Cycle Note Pt St and Qt are average values in power sub integration period which is from 1 to 20 input cycles PFt is also a result of those values 50 MI 2092 Power Harmonics Analyser Section VI Theory of ope
42. rameters for Recording and Real time measurement The main screen in the CONFIG menu includes instrument details Model number software version amp serial number and shows date and time on the bottom line From this main screen various configuration sub menus can be accessed allowing instrument parameters measurement conditions and settings to be changed The HOLD function is ignored in this menu Battery status is displayed at bottom of the display see fig 8 The legend EXTR is shown if the Instrument is being powered from the mains rather than from the battery CONFIGURATION EE METREL MI 2092 RECORDER SIGNALS HARMONICS SER NO 00000000 METER VER 0 0 power BATT BH EHHE 20 05 1999 12 4 4 00 fig 8 The main CONFIG menu consists of five items Use the UP and DOWN keys to highlight the appropriate item then press the ENTER key to select it 20 MI 2092 Power Harmonics Analyser Section III Operation manual 3 1 Password All programming functions and recorder settings including the starting amp stopping data logging are password protected Unless the password is entered the various settable parameters amp functions can only be viewed In all configuration sub menus pressing any edit key UP DOWN LEFT RIGHT SELECT ENTER will activate password input procedure The password must be entered before the SYSTEM sub menu is selected Default password
43. ration mP 0 mP P mQ 0 mQ 0 mQ Qx mQ 0 m Pf na m Pf 1 m Pf Pf m Pf na 180 mP 0 mP P mQ 0 m Qi Qx mQ 0 m Qc m Pf na m Pf Pfx m Pf 1 m Pf na LOAD TYPE Positive capacitive User capacitive generator User inductive load LOAD TYPE Negative inductive User inductive generator User capacitive load 270 LOAD TYPE Positive inductive LOAD TYPE Negative capacitive m P Px mP 0 m Qi Qx mQ 0 m Qc 0 m c 0 m Pfi Pf m Pf na m Pf na m Pf 1 0 m P Px mP 0 m Qi 0 m Qi 0 mQ O0 m Qc Qx m Pf 1 m Pfi na m Pf na m Pf Pfx Import Export and Inductive Capacitive Phase Polarity Diagram fig 42 51 MI 2092 Power Harmonics Analyser Section VI Theory of operation Per Phase Values averaged at the end of an IP Watts 2 _ 2 VAr ee CU amp aed ag 7 aQ ji 0 No VAr Mode A _ A J aQ ae ag a PF apf aPf z la0 ar 202 ar PF aPfa z z aPf 20 ar lao ar Volts amp Amps UE 20 he Di upn pn n gt mn JET de Uh Harmonics a ALU 4100 HU zi 2 ie Ux hpn Sa al thd na acos p na aU H na al H na Note If power breaks occur periods pn for power calculations and upn for voltage calculations are modified to IP pb IP pb pn gt gt upn 1C IC IC IC IC
44. re system with 3 CTS c0iooooocococonccnnncnnncnnnnnnnnnnnnnn nn cr crcenr nenenes 33 3 30 I Wire system With 2 CTS tcs ee A Are id 34 Section V PC software ls 36 2 Data logging amp analysis 000 40 2 1 P rIOdI AMA YSIS A A pA ne 41 2 2 Voltage Anomalies niie eine nian nu ented ini ne 42 2 3 Statistical Analysis onenean a et nn aE e avec Atl 43 De Direct A ee E e e et 44 Section VI Theory of operation snnnss 46 A A ns sd 46 2 Statistical analysis ser ce in ne Ar A tte enter Re AA 46 3 Periodic ANALYSIS antonia 46 4 Voltage anomaly recording 54 5 Power breaks recording i axe SAA state 55 OS MEMON USAC da ne ee aid oa pel ao blak eh 55 Section VII Modem data transfer 58 1 La 1601 dUCION Re RER as 58 2 MOdSMS A A Re 58 3 Modem ins and power link configuration 59 3 1 Power Link configuration ococccccccccnccccccncnnnnnanannnonnnnnnnnnnnnnnnnnnninnnnnnnnnnnnn 59 3 2 Modem configuration at the PC Side oooococccccccccccccananononononnnnoncncnnnnnnnnnnnnnnn 60 3 3 Modem configuration at the instrument side 60 3 4 Instrument configuration for modem communication 61 4 Modem connect with pc and instrument cece cece ec ee cece eeeeeeeeeeeeeeeeeeeeeeeeeeeeeaes 62 5 Connecting and disconnecting modems 63 0 SMS Mes SOS iodo 63 MI 2092 Power Harmonics Analyser Power Harmonics Analyser Power Harmonics Analyser The
45. s with no Voltage Anomalies or for recording 2655 Voltage Anomalies 57 MI 2092 Power Harmonics Analyser Section VII Modem data transfer Section VII Modem data transfer 1 Introduction Modem data transfer enables remote handling of the instrument and its data When the instrument has to be located on distant or hardly accessible place the modem is the only practical solution for fast access to the instrument It is only necessary to connect modem to the instrument at the location where measurements are performed and activate modem control The instrument and modem are connected via RS232 interface Requirements for the instrument and modem interface Equipment PC SW min ver Power Harmonics Analyzer MI 2092 Power Link 4 0 Ver 5 00 modem option Power Quality Analyzer Plus MI 2292 Power Link 4 0 Ver 5 00 Minimum requirements for PC PC Pentium Windows 98 or higher 2 Modems It is possible to use a range of standard analog and GSM modems with a PC and the instrument The following table shows possible combinations for remote measuring system On PC side Standard analog internal modem GSN feminal moderi dr Standard analog external modem GSN mil modem Standard analog external modem All PC external modems and modems for the instrument must have RS232 interface GSM modem connected to the instrument needs a PIN card with included DATA number VOICE number is included by default but it is not needed
46. s 13 3 5 Harmonics measurement tttttnnnrrnnenn rrn nn nnne Ee 14 3 6 Digital hardware specifications ooooocccccccccccccccnnnnnnnnnnnnananonononnnnnnnnnnonnnnns 14 General specificati Seea i re reae Aa N 14 3 8 MaInIGM AN CO 0 A A a A Bal E ed atk 14 38 1 Batteries ren Re a an AAA AA Ri CRE RTE 14 3 8 2 Cleaning zee e aac awesesnact dcr eaea e a ae ence teu edee EEES 15 3 8 3 Penodie Calla 15 3 8 4 DENIC O A 15 Section I Internal operation dd 16 e a ne TN an ann td ete A O A ie eat 16 Z Measurement meno ds ii nn en eis 16 Section Ill Operation Manual ss 18 BEN AA A AA 18 PAR 1 i EE E A A A IN 20 JASON A AAEE TAEA TTA 20 ASS WONG a5 sin gud ea a e e a ee 21 3 2 System SUB MENU area a a A a eee 21 3 3 Recorder Data Logging sub menu ooooocccccccccccccccccnocinanannnananann nono nn nnnnnnnnos 22 3 4 SIGNALS and HARMONICS SUb MBNUS cceeeeeeeeeeeeeeeeeeeeeeeeeeeees 24 3 5 Meter SUMEN ys anne NE dat ni nn e de cn TAGS 25 4 Recorder Data Loges She liado 26 SN ne nn ann el ied Ni nid 28 6 Spectrum Harmonic Analysis 29 TIMO iaa 29 MI 2092 Power Harmonics Analyser Table of contents 8 Scope Oscilloscope Function x eee an a cevesdvede nec ete une a 30 9 Frequency and overload information oooocccccccococccocococcncnnnnnnnnncnoncnnncnnnnnnnnnnnrnn cnn 31 Section IV Connection to power systems ns 32 1 IO AWESOME 33 2 3 3 wi
47. signals available for analysis are coloured blue To select a signal for analysis click on the blue coloured field which changes to red when selected Once parameters have been selected click on Execute on the Menu Bar and select the type of analysis required Periodic Analysis Voltage Anomalies Statistical Analysis In the following examples Us and Uz have been selected for analysis the Integration Period is set to 1 minute 40 MI 2092 Power Harmonics Analyser Section V PC software 2 1 Periodic Analysis Recorded data can be analysed in numerical form ES Periodics Execute Pile ES 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 16 06 1999 05 21 38 05 21 39 05 21 40 05 21 41 05 21 42 05 21 43 21 44 05 21 45 05 21 46 05 21 47 05 21 48 05 21 49 05 21 50 05 21 51 05 21 52 05 21 53 05 21 54 05 21 55 05 21 56 05 21 57 05 21 58 05 21 59 05 22 00 05 22 01 05 22 02 05 22 03 05 22 04 05 22 05 05 22 06 05 22 07 uv u1 cv u2 v U2 U2 Vv Avg Max Min Avg Max fig 34 Tabular Data Analysis screen a Data can also be graphed with advanced naviga
48. stical analysis The input range from 0 to full scale for each value is divided in 256 divisions 100 for PF and cos Measured values are scaled accordingly The result is a statistical table a Gaussian function that can be analysed using the PC software see section V below Statistical analysis is carried out only on signals selected in the Signals submenu Statistical analysis cannot be applied to Harmonic measurements 3 Periodic analysis Periodic Analysis is carried out over a programmable integration period IP This can be set from 1 second to 30 minutes by the user During the integration period the instrument calculates maximum minimum and average values of selected quantities At the end of the Period these values are stored in memory together with the Period Start date time and synchronization input Stored values differ for the various parameters e For THD measurement Only maximum and average values e For voltage harmonics and voltage current angle Only maximum and minimum values e For current harmonics Only maximum values e All other Parameters Minimum maximum and average 46 MI 2092 Power Harmonics Analyser Section VI Theory of operation Active power is divided in two quantities Import positive and Export negative Reactive power and power factor are divided in four quantities positive inductive i positive capacitive c negative inductive i and negative capacitive c Neutral conduc
49. the case of using GSM modem Connect telephone line to the modem in the case of using standard modem 3 3 Modem configuration at the instrument side The modem connected to the instrument should be configured before use Use the Power Link and do the following configuration procedure Insert PIN card into modem for GSM modem Connect modem to the PC run Power Link and click Modem Configure target modem see the following figure Modem configuration x Chek port settings to match this operation Check port Configuration procedure finished succesfully Disconnect the modem from the PC and connect it to the instrument with special RS232 cable see chapter 4 for connection diagram both must be in the power off state switched off 60 MI 2092 Power Harmonics Analyser Section VII Modem data transfer When the modem is being configured with Power Link the following settings are executed disable PIN for GSM modem AT CPIN XXXX and AT CLCK SC 1 XXXX enable automatic answering AT amp DO set automatic answering after 2 RINGS ATSO 2 set ECHO answering to OFF ATEO disable Wait for dial tone option ATXO set PORT baud rate for standard analog modem save parameters AT amp W activate saved parameters ATZ When the third party modem requires different settings we recommend using the Hyper Terminal program for modem configuration It is
50. ting and search facilities 41 MI 2092 Power Harmonics Analyser Section V PC software ES Periodics Execute lel ES 232 767 231 584 220 0 17 229 214 228 ala An xl FAS po i mY 22500 224 47 Le say D 223 29 4 af 226 847 Tia 222 10 220 92 219 744 218 554 217 37 216 18 215 00 213 81 212 63 211 444 210 26 209 07 Cursor 16 06 1999 06 16 25 WAN A A fi h Hit A MA nf PA A AI po Relation 1 19 218 67 nots 216 75 u4 vi Avg U2 6 Avg nots selected selected not selected not selected not ected not selected not selected UA NAN 16 06 1999 07 52 49 Leues on C2 y y 1 sa a fig 35 Graphic Data Analysis screen 2 2 Voltage Anomalies Recordings of Voltage Anomalies or Voltage Breaks can be displayed in both numerical and graphic format and voltage breaks SY Anomalies 09 07 tesa 01 52 02 16 Anomalies nb Direct dow Referers U 220 00 145 9 Anoe min Data avg 228 00 fig 36 Voltage Anomalies and Breaks screen A full listing of all Voltage Anomalies is provided together with the set up information and an analysis of each record can be quickly viewed in both graphic and tabular form 42 MI 2092 Power Harmonics Analyser Section V PC software 2 3 Statistical Analysis A Statist
51. tion manual In Auto mode START and STOP occur at user preset dates and times Recording can be stopped manually at any time Use SELECT key to toggle between MANUAL and AUTO mode In AUTO start stop use LEFT or RIGHT keys to select between Date and Time and the UP amp DOWN keys to set a new date or time Only valid date time values will be accepted STAT and PER STAT Statistical Analysis PER Periodic Analysis Use the SELECT key to enable ON or disable OFF the selected function ANOM WINDOW Recording of Voltage Anomalies Use the SELECT key to toggle between Disable OFF FIXED Window or VARIABLE Window recording In FIXED window mode the window and the Upper amp Lower Limits is set around the nominal voltage and remains fixed during recording session In VARIABLE window mode the window and the Upper amp Lower Limits is set around an average voltage dynamically calculated Use the LEFT and RIGHT keys to adjust the averaging period for calculating new values of average voltage 1 to 900 sec Voltage Anomaly recording is only available for those voltages selected for recording see 3 2 4 SIGNALS even if Periodic Analysis is disabled If no voltage is selected there will be no logging of Voltage Anomalies MAIN INTEGR PER Integration time period for Periodic Analysis Use the LEFT and RIGHT keys to set the integration period between 1 second and 30 minutes POWER SUB I P Averaging sub period for po
52. tor current l0 is ignored when measuring in 3 wire connection For power voltage and current measurements values are stored for each input cycle Harmonics and THD values are computed on samples of each gt input cycle For calculation of Average Voltage voltages less then 2 of full scale 0 02 x Un are treated as voltage interruptions and are excluded from any calculations The stored maximum and minimum values are based on values calculated during each input cycle while average values except for voltage power amp harmonics are calculated at the end of each IP and are based on the number of input cycles in the period Average values for power voltage and harmonic components ignore input cycles where the voltage is lower then 0 02 x Un Further if a Power Break or a Power Up occurs during an IP or the IP starts during a Power Break the Instrument will start a new cycle see also Power Break recording below The following figures and table offer a detailed descriptions of the values used for recording The meaning of abbreviations is described below Symbol definitions General symbols Additional symbols U rms voltages x phase l rms currents t total P active power i inductive with P Q or PF symbol S apparent power c capacitive with P Q or PF symbol Q reactive power positive with P Q or PF symbol l rms neutral conductor current negative with P
53. ty Use in a fashion other than as specified in this Manual may increase the risk of harm to the operator A Do not use the instrument and or any accessories if there is any damage visible A The Instrument contains no user serviceable parts Service or calibration must only be carried out only by an authorized dealer All normal safety precautions MUST be taken in order to avoid risk of electric shock when working on electric installations A Only use approved accessories which are available from your distributor 3 Applicable standards The Power Harmonics Analyser is designed in accordance to the following European standard Safety e EN 61010 1 Electromagnetic compatibility noise and immunity e EN 50081 1 e EN 50082 1 Measurements according to European standard EN 50160 MI 2092 Power Harmonics Analyser Section General information Section General information 1 Introduction This manual provides information for the connection operation programming data analysis and maintenance of the Power Harmonics Analyser shown in fig 7 The manual is divided into five sections each covering a particular aspect of the operation of the Power Harmonics Analyser Section Topic l General information I Internal Operation Meter Operation MI 2092 Power Harmonics Analyser Section General information 2 Description 2 1 Front panel
54. w 2 2 3 Le 3 5 E 5 9 pin male connector to 9 pin female connector PC side modem side PC to MODEM communication cable front view front view 9 pin male connector to 9 pin male connector instrument side modem side MODEM to INSTRUMENT communication cable RS 232 communication cables MODEM to INSTRUMENT PC to MODEM Communication cable Communication cable o 9 Lo 1 li oS J 4 gt A Standard phone line r em pe i Modem instrument and PC connection 62 MI 2092 Power Harmonics Analyser Section VII Modem data transfer 5 Connecting and disconnecting modems When the modems are connected and suitably set at the instrument and the PC just click the Make modem connection button in Power Link toolbar or select Make modem connection in Modem menu It takes a few seconds up to 30 s to establish communication link The instrument operates as it is connected directly to the PC via RS232 interface It means that all interface functions are active e g receive transmit instrument settings data download manipulating of the recording function clear memory To disconnect just click on Hang up modem connection button on Power Link toolbar or select Hang up modem connection in Modem menu 6 SMS messages The instrument has possibility to send an SMS message to the mobil
55. wer measurement Power sub IP Used in Periodic Analysis to average readings see PERIODIC ANALYSIS and the accompanying figure Settable between 1 and 20 mains cycles Use the LEFT and RIGHT keys to set the required value NOMINAL VOLTAGE The nominal voltage used as a reference in Voltage Anomaly recording In FIXED window mode this is the actual voltage used In VARIABLE window mode this is the start value of voltage later modified to the average value of voltage during the previous Integration Period while recording Use the LEFT and RIGHT keys to set the required nominal voltage from 58 0 V to 450 0 V 23 MI 2092 Power Harmonics Analyser Section III Operation manual UPPER and LOWER limits These are the limits which define the pass window for Voltage Anomaly recording Any voltage value outside the specified limits is detected and stored as an anomaly Use the LEFT and RIGHT keys to set the required limit 1 to 30 of nominal voltage BUFFER MODE The data storage in the data logging recorder function can be performed in two ways LINEAR or ROLLOVER In Linear mode recording stops when the memory is filled In Rollover mode recording only stops when the auto stop date time is reached or when manually stopped Once memory is filled the oldest data is over written Neither mode will affect any memory allocated for Statistical Analysis Press ENTER to confirm the new settings or ESC to cancel Starting or Stop
56. xperience It depends on the quality of voltage supply and on the user defined limits for detection of anomalies Selection of excessively narrow limits or a wrong nominal voltage reference can produce large numbers of recorded events and reducing memory capacity Example 1 The Instrument will be set to log for 7 days The requirement is to monitor both voltage and current changes and harmonic distortion with as much detail as possible For optimum memory usage just 12 channels should be set for periodic analysis U1 U2 U3 11 12 13 thdu1 thdU2 thdU3 thdi1 thdi2 thdj3 With this setting the Instrument can save 24 771 records values for 24 771 IPs Increasing number of channels and or enabling Statistical Analysis would decrease number of saved IPs Rnmax 2032 1024 12 12 6 gt 24 771 Record Length 12 12 6 84 bytes Thus over a week 604 800 seconds instrument can save a record every 30 seconds an IP interval of 30 seconds 604 800 seconds 24771 24 4 seconds Set IP 30 seconds Thus monitoring the above 12 parameters with an IP of 30 seconds will produce 20 160 records per week in memory This will leave the following memory free FREE Memory Memory Capacity Memory Used 2032 1024 20 160 84 bytes 387 328 bytes This FREE Memory is enough for recording 2361 Voltage Anomalies Adding a further channel to the recording e g frequency would leave the following memory free

Power Harmonics Analyser MI 2092 User Manual

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