User manual - Mars
Contents
1. At 254V output voltage and nominal load in the voltage circuit maximal current is 7 5A MC2 211 001 UM 2 2 4 Operating ranges for currents and voltages are specified in Tables 2 2 and 2 3 Table 2 2 Output voltage ranges V Rated phase phase to phase voltage values Output voltage ranges V of Current Voltage amplifier 60 001 268 220 22073 0 71 99 60 60V3 Table 2 3 Output current ranges V Output current ranges A Rated current values of Current Voltage amplifier 0 5000 7 7 5 0 0 54999 0 5 G MARS ENERGO 2 3 Design and operation 2 3 1 Block diagram of the Generator is shown in Fig 2 2 Mains supply and Synchronization Voltage Channel A Channel B Channel C Ua Ub Uc UN Currents LCD e annel A rent Central f Channel A ampli fiers ia v phase A Processor Cc WE Board Channel B LK Keyboard phase B Channel C Current amplifiers Ic phase C Fig 2 2 Block diagram 2 3 2 At the hart of the Generator are a Texas Instruments signal processor and FPGA from Xilinx Such a solution makes possible prompt upgrading of Generator s firmware keep ing its hardware intact The Generator employs 16 bit Digital to Analog Conversion DAC The DAC block has six identical channels in it They operate independently each converting 16 bit binary input data into analog form 2048 points are produced every 20 milliseconds which gi2. Logarithmic spectrum and Harmonics phase shift windows con tain 2 editable fields number of the harmonic selected n setting is made with A Y keys which makes the cursor move to the spectral line A a to the harmonic selected amplitude ratio of the harmonic U or I fields in the Spectrum linear and Spectrum logarithmic windows relative phase of the harmonic Com in the Harmonics phase shift window The channel under review can only be selected in the Oscilloscope window 6699 Setting RMS values The RMS values item when enabled within Special signals submenu opens the window Fig 4 14 where you can set the desired RMS value for the first harmonic of each output signal The window header is self explanatory RMS values of Ist harmonics Six modifiable fields at the centre of the window correspond to six channels of the Generator The fields dedi cated to voltage channels can accept values 0 to 268V these standing for current channels have 0 to 8A for permissible range When being modified all fields are incremented with step equal to one unit of least significant decimal place 0 001V for voltage channels and 0 00001A for current channels RMS ist harmonics Ua GREIS Y Us 78 000 V Ue 78 000 VM Ia 50000 A Is 0 50000 A n i Ay pp rene AE Fig 4 14 RMS values window Turning Interharmonics on o
3. output fre quency is determined by mains frequency Otherwise with eye icon the Generator ignores frequency specification entered in this window Freq EHS EA Fig 4 8 Parameter setting window for signal frequency Frequency is the only modifiable field within this window It can accept values of 42 50 to 70 00Hz specified in 0 01Hz increments As you adjust frequency the window dis plays the value just entered and sample oscillogram immediately below Setting phase angles By enabling Phase shifts item you open the window Fig 4 9 where you can set phase shifts between voltages of different phases as well as between currents and voltages within each phase by definition phase angles between channels are considered to be these between respective first harmonics G MARS ENERGO Fig 4 9 Parameter setting window for phase angles Six modifiable fields of the above window correspond to various angles as applied to the first harmonics of signals to be generated The fields are modified within the range of 179 99 to 180 00 in 0 01 increments The values can be set by cycling through the range All settings currently selected are pictured on a vector diagram in the left part of the screen Vectors on the diagram reflect each modification Arrows pointed heads only appear on the vectors that form the angle selected at the moment while other vectors remain headless Set
4. phase shift of the event 9 179 99 to 180 00 in 0 01 increments this parameter is only valid when half cycle referencing 1 2T base option is enabled half cycle referencing 1 2T base This characteristic of the event means that each event is triggered in step with nearest half cycle of fundamental frequency This kind of synchronization is recommended in conjunction with aforesaid phase shift of the event o other than zero dip depth value Un lt 100 or swell height value Un gt 100 for each phase Ua Us Uc within the range of 0 to 200 in 0 01 increments 8 088 T o Gogo tn 0 000 Pn 0 00 1 2T Base O R br o Soa Fig 4 19 Parameter setting window for Dips and swells mode In the Dips and swells mode voltage range is always set to 220V 22 MC2 211 001 UM 4 2 3 5 Flicker Mode In the Flicker mode meander like changes in voltage are maintained on Generator out puts These fluctuations depend on the settings in the window see the table below ee Number of variations Relative change in voltage per minute AU U l l 2 720 2 2 2 210 7 1 460 ii 39 0 905 2 110 0 725 6 1620 0 402 Signal parameters are set by selecting Fig 4 20 the number identifying one of six op tions of the above table and the multiplier applied to AU U The multiplier can be set within the range of 0 01 to 25 00 in 0 01
5. the menu item currently active is highlighted by color inversion To enable an item and skip to its subordi nate menu or parameter setting window press ENT Return to the upper level menu is made by pressing ESC On enabling the selected menu item it is possible either to skip to its sub ordinate menu or parameter setting window 13 G MARS ENERGO The parameter setting windows hereinafter referred to as the windows graphically and or textually display various parameters of the signal produced by the Generator Each win dow has one or more modifiable fields in it the fields When there are several fields in the window A Vv keys can be used to skip from field to field The menu item currently active is highlighted by color inversion Observe the following rules when you use keyboard to change values of active modifi able fields within the current window 1 Key gt increases and key lt decreases respectively the value of an active field The longer the key remains depressed the faster the active field changes its value Suppose the active field can be changed cyclically like phase shift expressed in angular de grees When its growing value reaches maximum with gt key still hold down mini mum value appears in the field and starts growing again When you depress and hold lt key the value goes the other way round having dropped to its minimum it becomes maximum and starts decreasing again Wh
6. Caution To avoid electric shock it is strongly recommended to connect disconnect the Device to the measured circuits when they are de energized Otherwise connection discon nection to the measured circuits shall be carried out by qualified service personnel in compli ance with local safety regulations in force The Generator s voltage circuits have 6 terminals Ua Us Uc for connection to phase voltages and neutral six terminals are provided for phase currents Ia In Ic Current circuits are galvanically isolated from each other and from voltage circuits The voltage circuits are symmetrical and have one common point neutral conductor All connections to measured circuits are made via terminals located on Generator s front panel see Fig 2 1 Caution Inspect the cables Ensure all joints are made properly to avoid overheating and excessively high resistance Power the Generator from mains in the following order 1 Connect the Generator to the device under test and reference device 2 Plug the mains cable of the device under test and reference device to mains socket 3 Turn on the Generator Caution Before turning the Generator on make sure that its current outputs are short circuited short circuit straps are placed or a device with the input impedance below 0 3MOhm has been connected to the Generator The Generator performs warm up and initialization procedures as it is turned on At the conclusion of the procedure
7. by the Generator status line Fig 4 2 informing operator on basic modes currently in force Doon Pmotcan Pis The leftmost position reflects nominal values of sub ranges The meaning of each icon selected in the current and voltage amplifiers The adjacent position is described below marked PRO indicates nominal values of sub ranges that will be from right to left enabled when the Generator starts producing new modified signals Fig 4 2 Status line You may activate status line by pressing F key in any Generator s mode of operation This will give you access to change basic modes of operation Keys lt gt are used to scroll through the active status line and select a field in it while selected the field is highlighted with inverse video When active the active status line can be de activated with ESC key 14 MC2 211 001 UM The meaning of each icon is described below from right to left Generation mode 2 hve generation of output signals is turned on at the moment GEN l Ia generation of output signals is turned off and the outputs have zero potentials To change the mode select the corresponding icon and press ENT Regenerate mode accessible only with Fy icon S Pressing the regenerate icon brings output signals of the Generator in accor dance with their modified parameters At this time Sand glass icon H lets you know that modification recalc
8. part Press this key to enter a negative value before specifying its magnitude Up and down arrow keys press to scroll through various menu items A e Sa ae Press this key to scroll through the fields within a parameter setting window PER Left and right arrow keys press to increment decrement the value of an active field f Press to scroll through the active status line and select a field in it ENT Enter Press to activate a menu item or status line field Press to save changes g s Press to return to an upper level menu without saving changes ESC Press to leave the status line F Press to activate the status line As it is turned on the Generator displays the screen shown in Figure 3 1 Pressing any key will bring up the main menu Fig 4 1 ERERGOFORM 3 3 Standard signal Special signals Settings Signal 1i6rary Fig 4 1 Main menu The main menu has four options Standard signal Special signals Settings Signal Library Whatever menu window is on the screen its bottom is always occupied by Generator status line informing operator on basic modes currently in force Note The operator interface may be modified with respect to the order of displaying in formation The changes do not affect metrological and technical characteristics of the Generator Menu navigation i e selection of an item is supported by A Vv keys
9. AC circuits as required within the parameter ranges and permissible error limits speci fied in Table 2 1 Table 2 1 Technical Specifications of Energoforma 3 3 Value Parameter In increments Fundamental error Notes Range of of output setting 1 1st harmonic frequency of 45 0 70 0 01 Absolute 0 01 AC catrent fi Hz 0 solute 0 2 Nominal values of phase 220 220V3 phase to phase voltages Un V 60 60V3 3 Nominal values of current 0 5 5 D In A 4 RMS of 1st voltage har 20 254 At nominal load monic U4 V 0 001 Relative 1 i 1 254 264 Ata 10 load with respect to nominal load 5 RMS of Ist current har 0 05 12 Relative 1 monic hh A 0 0001 l gt 0 005 0 05 Relative 2 6 Harmonic composition Harmonics Q ty 49 components with frequencies 2 50 lfc kf k from 2 to 50 Interharmonics 0 01 KC Q ty 51 components with frequencies 0 5 1 5 lf kf 2 odd numbers k from 49 5 50 5 1 to 101 7 RMS of current or voltage harmonic components of U or A For harmonics from 2nd to 19th Oe For harmonics from 20th to 50th vet SCH For interharmonics 0 15 from 0 5 to 50 5 K G MARS ENERGO Parameter Value Range In increments of Fundamental error of output setting Notes 8 Phase angle between E the Ist harmonics of phase voltages in different phases let current and Ist vol
10. OKP 43 4531 Three phase Programmable Waveform Generator Energoforma 3 3 User s Manual Edition 8 MC2 211 001 UM 2015 G MARS ENERGO CONTENTS 1 SAFETY REQUIREMENTS cccccisccascsessaccsssessneccsacssccansessteniusecuciseoesscc escssaueceetdO 2 GENERAL INFORMATION AND OPERATION PRINCIPLE 4 Dee APPEICATION inori siave eeue TTE E ECO EEUE oe TIE E anwar EEE 4 Doe DESCRIPTION ee Ee ee ee EEEE rE 4 2 3 DESIGN AND OPERA TI N EE 8 3 PREPARING FOR OPERATION G eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeg 10 3 1 OPERATING RESTRICTIONS sc255 lt 20 Soca EE 10 D2 MIN PACKING EE 10 Ded K i EE 10 4 OPERATION PROCEDURE G eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeegeeeeeeeeeeeeeegeeeeeeeeeeeeeeg 12 4 1 PC CONTROLEED MODE toucia adie ilar eee eae es a 12 4 2 OFF LINE MODE CONTROL FROM MEMBRANE KEYBOARD 12 4 2 Ee EE 12 4 2 2 Standard signal mode 5 2isis 00s3sahsgsaccessnenstasdecsangsacsacdassdcnusatecesatdbdesacoasdbavcauetedouterens 16 42 37 Special signals eI eege Eege 16 A 2 A SEINES E 23 4 2 5 Signal Library MenUsscnnuiniss nain a E a GE 24 MC2 211 001 UM Introduction The manual covers Programmable Waveform Generator Energoforma 3 3 hereinafter re ferred to as the Generator and contains the information and instructions for its operation The aforesaid equipment has been manufactured in compliance with Technical Specifications TS 4345 019 499764972003 2003 and conforms
11. One period of such a signal is outlined on the diagram Fig 4 17 Fig 4 17 Shape of a signal generated in Phase Control mode with period T 21 G MARS ENERGO You can use the window pictured on Fig 4 18 to specify fundamental frequency i e the frequency of the first harmonic phase shift between current and voltage one and the same for each phase current and voltage values Checkboxes below Ia Is Ic D I allow you to toggle switches that you can use to set off zero phase currents as desired A switch is selected by lt gt keys then toggled by pressing ENT key Angles between phase voltages are set to 120 Phase control F WER Hz Angleul 30 00 U 70 000 V Ia Is Ic 0 50000 A x x Fig 4 18 Parameter setting window for Phase control mode 4 2 3 4 Dips and swells mode You can use the window pictured on Fig 4 19 to set a number of parameters that define dips and or swells referred to as the events to be introduced in output signal generated by voltage channels total number of events n 0 to 100 000 duration of one event t 0 to 600s event repetition period T 0 to 600s 0 001s increment T cannot be less than t first event shift in time relative to the moment of triggering time delay between issu ing the command to generate the output signal and the occurrence of first event t 0 to 600s 0 001s increment
12. data a more powerful computer may be requisite To make the program run properly connect serial ports of the PC to RS 232 ports of the Generator and Energomonitor 3 3T1 Energomonitor 3 1K reference instrument On starting Energoform program the Generator automatically goes to the PC controlled mode For how to work with the Energomonitor 3 3T1 or Energomonitor 3 1K instruments see the user manual for the corresponding instrument For how to work with Energoform program see Energoform program User s Manual document 4 2 Off line mode control from membrane keyboard In the off line mode the Generator is operated via its membrane keyboard For how to work with the Energomonitor 3 3T1 or Energomonitor 3 1K see the user manual for the corresponding instrument Operation of the Generator in the off line mode is described below 4 2 1 Operator interface Operator interface of the Generator includes an 18 button membrane keyboard and graphic 240x128 dot matrix Liquid Crystal Display LCD The interface makes it possible to select operation modes and configure signal parameters Table 4 1 describes the keys located on the front panel 12 MC2 211 001 UM Table 4 1 Functions of the keys Key Name and Function 0 9 Numeric keypad Press to type in numeric values of the field currently active Decimal point press this key before entering the desired magnitude of a fractional D
13. en a value in the active field is not of cyclic nature it can only be changed in both directions within its permissible interval 2 By pressing number keys 0 to 9 you can immediately type in the desired value within permissible interval established for the currently active field 3 Suppose you modify the value of an active field formatted to have integer and frac tional parts By pressing decimal point key you terminate integer part of the number and change number entry mode accordingly Then you specify the frac tional part by pressing number keys 4 To enter a negative value into a currently active field press EI decimal point key BEFORE specifying the desired magnitude provided that permissible values estab lished for the parameter may be negative As soon as the decimal point key is pressed the field assumes a negative value with the smallest possible magnitude i e 1 for integer fields 0 01 for the fields specified in 1 100 increments etc Then modify the field as described in previous paragraphs to set a target value in it Having pressed ENT you see H sand glass icon in the Generator status line on the bottom of the screen This notifies you that modification is in progress and further operation is suspended till the end of recalculation process To return to the upper level menu press ESC key Status line Whatever menu window is on the screen its bottom is always occupied
14. ff To toggle between the Interharmonics mode on and off select the corresponding option in the Programmed waveform menu and press ENT ON or OFF status will appear to the right of the field Note When the mode is ON recalculation time will be extended 20 MC2 211 001 UM 4 2 3 2 Subharmonics mode In the Subharmonics mode it is possible to set parameters for signals on Generator s current outputs Ia Is Ic One period of such a signal is outlined on the diagram Fig 4 15 Fig 4 15 Shape of a signal generated in Subharmonics mode with period T You can use the window pictured on Fig 4 16 to specify fundamental frequency i e the frequency of the first harmonic phase shift between current and voltage one and the same for each phase current and voltage values Checkboxes below Ia Is Ic Xl allow you to toggle switches that you can use to set off zero phase currents as desired A switch is selected by lt gt keys then toggled by pressing ENT key Angles between phase voltages are set to 120 SuBharmenics F sA HZ Angleul 30 00 U 70 000 Ia IsI 0 50000 A x D P be S Ire o le Fig 4 16 Parameter setting window for Subharmonics mode 4 2 3 3 Phase control mode In the Phase Control mode it is possible to set parameters for specially shaped signals on current outputs Ia In Ic
15. he number of channels for which the parameters are recalculated When recalcula tion is in progress the status line displays Eicon Note All changes made in the Standard signal mode are automatically extended to the Subharmonics section 4 2 3 2 and Phase Control section 4 2 3 3 modes and vice versa 4 2 3 Special signals menu Specific signals menu Fig 4 6 has six options Programmed waveform Subharmonics Phase control Dips and swells Flicker Library SPECIAL SIGNALS SuBharmonics Phase control Dips and swells Flicker Si Fig 4 6 rons signals menu 16 MC2 211 001 UM 4 2 3 1 Programmed waveform menu This option Fig 4 7 makes it possible to set signals on Generator outputs to any desired parameter values within permissible limits established for each parameter Frequency Phase angles Wave shape RMS values Additionally the Interharmonics mode is turned on off here PROGRAMMED WAVEFORM Phase shifts waveshape RMS values Interharmonics off Zo Etage o S i fr o Son DASS Fig 4 7 Programmed waveform menu Setting frequency The Frequency item when enabled opens the window Fig 4 8 where you can set fundamental iere i e frequency of the first harmonic of the desired three phase volt age current system BS When the mains synchronization mode is enabled
16. increments Flicker num6er multiplier 1 80 Variat min 1 AU U 2 7200 Z 60 Ke 220 Bar Zu Da S i Trei KS Fig 4 20 Parameter setting window for Flicker mode 4 2 3 6 Signal Library Menu See section 4 2 5 4 2 4 Settings menu The Settings menu Fig 4 21 includes two options m RS 232 Speed Language SETTINGS RS232 Speed S E airaa o S i o o SoA Skill Fig 4 21 Settings menu 23 G MARS ENERGO 4 2 4 1 RS 232 Speed By enabling Settings item in the main menu you open the window where you can spec ify the desired characteristic of RS 232 interface Fig 4 22 The Device can support data transfer to from a PC via RS 232 interface at a speed of 115 200 38 400 19 200 and 9600bit s Use A v keys to select data rate and ENT to enable The value you have entered ap pears on the upper line of the screen 115200 8 s 38400 Be 19208 Gs 9600 Gs 60V 220V Walt ipa Do S i fen o Son OAI Fig 4 22 Data rate selection menu for RS 232 interface 4 2 4 2 Language Selecting Language will take you to the window pictured below Fig 4 23 The option gives the possibility to choose the language Russian or English for messages and alphanumeric fields on the screens The language is selected with A Y keys confirmed by ENT Language PEnglish PycckKuu S 220 PAYAT bo SoA o o 7 San Keel
17. represented as a 50x2048Hz meander comes to the Central Processor board 2 3 4 Analogue current and voltage signals are taken out of the DAC board and applied to the outputs of current and voltage amplifiers respectively To provide short circuit protection a 0 25A fuse is mounted on the output of each voltage channel Output ranges of the current and voltage amplifiers are processor controlled The proces sor transmits its commands to select a current or voltage output range to the relays Ranges of the amplifiers are also operated by commands coming from the processor G MARS ENERGO 3 Preparing for operation 3 1 Operating restrictions If the Generator has been moved from a cold environment with ambient temperature be low 20 C into a warm one it shall be left to stand for at least 4 hours at room temperature before applying power to make sure that no condensation remains inside Caution The Generator shall not be used under the ingress of moisture inside its body Caution Current outputs not connected to a load must be short circuited they must not be left without a load 3 2 Unpacking Check that the delivery package contains all parts specified in the Supply Agreement Check that the manufacturer s seal is intact Should anything in the package be found dam aged contact the supplier immediately The delivery package is specified in Table 2 1 of the Equipment Certificate MS2 211 001 PS 3 3 Turning on
18. sformer test systems where the Generator is used together with reference meters e g Energomonitor 3 1K or Energomonitor 3 3T1 2 2 Description 2 2 1 The generator is supplied as a self contained hand held module The Generator s front panel is shown in Fig 2 1 Mains input connector Power Fuse holder wm for voltage amplifier Fuse holders Ground RS 232 terminal interface connector Graphic LCD display Voltage neutral Keyboard output terminals Current output terminals E WE SE KH Kassel for phase Jumpers voltage outputs Fig 2 1 Front panel MC2 211 001 UM 2 2 2 The Generator is provided with three channels for generating voltages phase volt ages as well as with three independent channels for generating currents There are two ways for the user to specify a signal model in digital form By selecting one of standard signals from the device s internal memory or specifying signal parameters for a specific signal using the built in keyboard By selecting a signal from the Library of standard signals stored on a PC and recording it into the Generator via RS 232 interface running the Energoform software By specifying signal parameters manually from the built in keyboard Waveforms and signal parameters are viewed either on the built in graphic LCD or PC via Energoform software 2 2 3 The generator provides for generating currents and voltages for single and three phase
19. t Fig 4 23 Language window 4 2 5 Signal Library Menu Signal Library menu Fig 4 24 includes two options Load signal Save signal SIGNAL LIBRARY Load signal Save signal Pro a AON bo SGA Fig 4 24 Signal library menu By enabling either option you make a branch to another submenu named Select library Fig 4 25 There are 12 libraries with the capacity of 10 test signals per each The submenu 24 MC2 211 001 UM occupies two pages pictured below Use A v keys to turn them over and lt gt keys to select a library name SELECT LIBRARY SELECT LIBRARY LiB6rary 1 LiBrary 7 LiSrary 8 Li6rary 3 Li6rary 4 Li6rary 10 SE SS irar l D a g n imo Ean OD Do EEY r o gy MAAE Fig 4 25 Select library submenu pages 1 and 2 By enabling a library you open its submenu named Select signal that lists the names of 10 signals stored in that library Fig 4 26 Vacant positions that store no signals at the mo ment show No data instead of signal name Use A v keys to turn the pages over and lt gt keys to select a signal position SELECT SIGNAL Fig 4 26 Select signal submenu page 1 If Load signal has been selected the requested signal is loaded and its profile data is displayed on the screen pictured on Fig 4 27 Load signal Fig 4 27 Signal profile window If S
20. tage harmonics in the same phase degrees 179 99 180 0 01 Absolute 2 9 Phase angle between E Ist and nth voltage harmon ics interharmonics in the same phase E let and nth current harmon ics interharmonics in the same phase degrees 179 99 180 0 01 10 Total Harmonic Distortion THD of voltage or less Relative 1 U 20 254V at linear load 11 Total Harmonic Distortion THD of current or less Relative 1 T 0 05 12A I 0 05 5 0A Relative 5 I 0 005 0 05A 12 Instability of RMS of set voltage no more than min Absolute 0 03 13 Instability of RMS of set current no more than min Absolute 0 03 14 Instability of set power no more than min Absolute 0 05 15 Number of dips or swells 0 100 000 16 Voltage dip duration f s 17 Event repetition period T T gt t s 0 600 0 001 Absolute 0 002 fi 50 1 Hz 18 RMS of dip voltage Umin of U 0 9 99 10 29 99 30 100 0 01 fi 50 1 Hz Relative 1 0 0 5 U U 1 Relative 1 19 RMS of swell voltage Umax of U 100 200 0 01 Relative 0 5 fi 50 1 Hz 20 Power output of current source VA 5 At 10A current Ra 0 050hm 21 Power output of voltage source VA 10 Ata load of 4 8kOhm
21. the power up screen Fig 3 1 appears It shows manufacturer s name and logo Generator s type and its firmware version 10 MC2 211 001 UM Fig 3 1 Power up screen Pressing any key will bring up the main menu see Fig 4 1 To set the Generator for stable operation it shall be kept powered for at least 30 minutes G MARS ENERGO 4 Operation procedure Energoforma 3 3 three phase programmable waveform generator operates in two modes Controlled from a PC via RS 232 running Energoform program Controlled from its membrane keyboard 4 1 PC controlled mode To operate the Generator in the on line mode Energoform software package shall be installed on a PC The Energoform software works under operation systems MS Windows 98 2000 XP Vista and Windows 7 32 or 64 bit architecture supporting the Cyrillic alpha bet When working in Energoform program it is recommended to use the Generator to gether with Energomonitor 3 3T1 or Energomonitor 3 1K reference instrument The following PC configuration is recommended for proper functioning of the program Processor Pentium III at 500MHz or more powerful At least 64Mb RAM At least 3Mb of disc space to install the program Video adapter of 1024x768 resolution CD drive for software installation Mouse or compatible pointing device Two free COM ports RS 232 For a more convenient work with large volumes of
22. thin the range of 0 to 100 00 in 0 01 increments Interharmonics mode is on Values are set within the range of 0 to 15 00 in 0 01 increments relative phase of the harmonic _ the value is set as a percentage of the Ist har monic within the range of 179 99 to 180 00 in 0 01 increments symbolic name of the channel to switch over 6 channels The Spectrum linear option Fig 4 11 represents spectrogram of the signal in the channel under review drawn in linear scale EERIE E Fig 4 11 Waveshape window with linear spectrum of amplitudes The Spectrum logarithmic option Fig 4 12 displays the spectrogram of the signal in the channel under review drawn in logarithmic scale in decibels dB this only affects graphi cal part of the window The value in its modifiable field named amplitude ratio of the har monic Un or In are still displayed and edited in linear scale as a percentage of the 1st har monic Fig 4 12 Waveshape window with logarithmic spectrum of amplitudes The Harmonics Phase Shift option Fig 4 13 displays the spectrum of phase shift an gles each determined relative to the first fundamental harmonic of the signal in the active channel G MARS ENERGO Harmen sh Change view EZA Fig 4 13 Harmonics Phase Shift window with spectrum of phase shift angles Linear spectrum
23. ting signal shapes Screens representing wave shapes of desired signals may be of 4 types Oscilloscope Spectrum linear Spectrum logarithmic Harmonics phases To skip to an alternative representation use additional function of this window named Change view The function is enabled via its highlighted name in the status line By enabling Waveshape item you can set the desired shape of a signal in each of six Generator s channels The Oscilloscope option Fig 4 10 displays the signal under review in the form of tra ditional oscillogram The view of the oscillogram depends on whether the Interharmonics mode is turned on or off sci 1 1 oScope Change view rg Change view ETA Fig 4 10 Waveshape window in the form of oscillogram left part Interharmonics mode is off right part Interharmonics mode is on The window has 4 editable fields Number of the harmonic selected n field Interharmonics mode is off Possible values are selected from the sequence 1 2 49 50 Interharmonics mode is on Possible values are selected from the sequence 0 5 1 1 5 2 50 50 5 The required value is selected with lt gt keys 18 MC2 211 001 UM amplitude ratio of the harmonic U or I field the value is set as a percentage of the 1st harmonic Interharmonics mode is off Values are set wi
24. to the Technical Requirements in force 1 Safety requirements 1 1 When putting the Generator into operation and during operation Interbranch Rules for Labor Safety When Operating Electrical Systems must be observed The symbol on the Generator s panel is intended to alert the user to the presence of important operating in structions See Warning and Caution clauses in section 3 3 Turning on 1 2 The Generator provides electrical safety according to Russian Standard GOST R 51350 1 3 The Generator provides electrical shock protection according to Russian Standard GOST R 51350 99 that corresponds to IEC 61010 1 Category I 1 4 Protection provided by the enclosure is per Russian Standard GOST 14254 96 IP20 Mounting Category II pollution grade 2 G MARS ENERGO 2 General information and operation principle 2 1 Application 2 1 1 Energoforma 3 3 generates single and three phase system of current voltage sig nals according to a user specified model that can be used for testing and adjustment of instru ments that measure Active reactive and apparent power energy Power quality parameters as per 61000 4 30 power quality measurement stan dard classes A S and B including harmonics up to 50th and interharmonics RMS of currents and voltages within commercial frequency range 2 1 2 The sphere of application includes mobile calibration testing laboratories and me ter tran
25. tor status line modification recalculation in progress If an additional context dependent function is included in the current menu window the function name appears on the active status line and gives access to that function Fig 4 4 Press ENT to enable the function Change view BEZAR Fig 4 4 Generator status line with additional function in it 15 G MARS ENERGO 4 2 2 Standard signal mode The mode makes Generator produce pure sine waveforms on its outputs Angles between phase voltages are set to 120 You can use the window shown in Fig 4 5 to specify Fundamental 1st harmonic frequency from 42 50 to 70 00Hz in 0 01Hz steps Phase shifts between currents and voltages for each phase from 179 99 to 180 00 in 0 01 steps Values of voltage from 0 to 268V in 0 001V steps Values of current from 0 to 8A in 0 00001A steps Checkboxes X below Ia Is Ic fields allow you to toggle switches that are used to set off zero phase currents as desired A switch is selected by lt gt keys then toggled by ENT key Standard signal Pia 50 00 HZ SE Bag Be e a rte on 0000 A FE Sch i SEH AC Be Fig 4 5 Parameter setting window for Standard signal New wave shapes are recalculated by pressing ENT It may take long time to recalcu late the parameters up to 5s The time of recalculation is determined by the selected wave shapes and t
26. tore signal has been selected on opening Signal library option the screen with alphanumeric keyboard is displayed Fig 4 28 Enter name SIGNAL1 f1BCDEFGHIJKLMNOPGRST UVWxYZaBcdefaghijkimn oOpars tuvwxyZ01234567 89 lt gt 7 A RU OK DELETE Fig 4 28 Signal name entry window 29 G MARS ENERGO The signal name must contain 20 characters or less Use A v lt gt keys to select a character on the screen keyboard Press ENT to enter a character of a new signal name If you select DELETE on screen option with A v lt gt keys and then press ENT the last character will be deleted As soon as the desired signal name has been entered select OK on screen option and then press ENT to save the name in the memory 26
27. ulation of the parameters is in progress and further operation is suspended till this comes to the end Without the icon the Generator is ready to respond to your further actions such as modification of some other parameter E is displayed with Ed 7 F Mode of synchronization with mains frequency accessible only with Ga icon mains synchronization mode is enabled and the Generator monitors mains fre quency and produce its output signals accordingly e EX no monitoring of mains frequency is maintained at the moment The Generator produces its output signals in accordance to the frequency specified by the fre quency parameter Fig 4 8 To enable a mode select the corresponding icon and press ENT The position marked gt reflects nominal values of sub ranges selected in the current and voltage amplifiers The adjacent position marked Pro indicates nominal values of sub ranges that will be enabled when the Generator starts producing new modified signals As soon as the generation Pe or regeneration E2 command is executed the current nominal values become equal to these programmed values Sand glass icon H displayed in the inverse video Fig 4 3 informs you that modifica tion recalculation of the parameters is in progress Further operation is suspended till this comes to the end Without the icon the Generator is ready to respond to your further actions x Fig 4 3 Genera
28. ves 2048 sam ples per period at 50Hz frequency The DAC board produces 6 analog signals 3 currents and 3 voltages The current signals are galvanically isolated from each other and from other cir cuits and the voltage signals are galvanically isolated from other circuits and connected by a common wire The Central Processor board exercises full control over the Generator It produces the arrays of samples representing point by point each of the six wave forms The array data are fed into the DAC board and converted into 3 current and 3 voltage curves Conversion results are stored in non volatile memory and displayed on LCD screen The Central Processor board is responsible for keeping of time and marking of intervals as per real time clock supporting of data exchange with external devices PCs receiving of data and commands from operator s keyboard The keyboard is mounted on the front panel and connected to the Central Processor board Operator uses the keyboard to specify how the information should be displayed to enter MC2 211 001 UM the parameters of signals to be generated waveform amplitude phase shifts for currents and voltages etc 2 3 3 The Power Supply unit generates voltages 5V 3 3V and 1 6V for the Central Processor Board and 5V independent power supply for RS 232 port It also contains a cir cuit that keeps output signals synchronized with power supply network synchronization signal
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