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User’s Guide A gilent Technol ogi es 14761A Harmonic and Flicker Emissions Tests for EN 61000-3-2, EN 61000-3-3, and EN 60555 Part 2 Agilent Part No.
2 Notice This docum ent con tains propriet ary in format ion protected by copyrig ht. All rights are reserved. No part of t his document may be photoc o pied , rep rod uced, o r tra nslat e d into ano ther langua ge without the prior c o nsent of Agilent Technolo gies.
3 Table of Contents Notice 2 Warranty 2 Lim itation o f W a rranty 2 Revisions 2 Printing Histo ry 2 Table of Cont ent s 3 1 INTRODUCTION 7 How to Use this Manual 7 The Agilent 6800-Series AC Power So.
4 5 VIEWING TEST DA TA 37 Navigator Toolb ar 37 Viewing Quas i-stationary and Fl uctuating Harm onics 38 Graph Display 38 Tabl e D is pla y 41 Time-Series Display 42 Statistics Display 45 Prob ability Display (for Quasi-stationary or Fluctuating harmonics) 46 Viewing 2.
5 C IEC MODE COMMA ND SUMMA RY 81 Introduc tion 81 Using the SENSe:CURRent:ACDC:RANGe co mmand 81 CAL Culate:INTegral:T IME 83 CAL Culate:SMOothing 83 CALCulate:L IMit:UP Per 84 FORMat 85 FORMat:BORDe.
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7 1 Introduction How to Use this Manual This manual describes the operation of the Ag ilent 14761A Harm onic/Flicker Test System (HFTS) software when used in conjunction with the Agilent 6800-Series AC Power Source/Analy zers. Its primary function is as a reference manual.
1 - Introduction 8 The A gilent 6800-Series A C Pow er Source/A naly zers The Agilent 6800- Series AC Power Source/Analyzers are specifically designed for testing products compliant to the I EC low- frequency em issions regulations for quasi- stationary current harmonics, fluctuating current harm onics, and voltag e fluctuations and flicker.
Introduction - 1 9 EN 61000-3-2 and EN 60555 Part 2 Regulations EN 61000-3- 2 and EN 60555 Part 2 regulate the m agnitude of harm onic currents drawn by products from the ac line. For exam ple, harmonic currents can occur as a result of hig h peak currents drawn by switch- mode power supplies.
1 - Introduction 10 EN 61000-3-3 Regulation EN 61000-3- 3 regulates the m agnitude, rate, and tim e-duration of voltage fluctuations and f licker caused by products connected to the ac line. Voltag e fluctuations are created by time- vary ing current drains working against branch circuit impedance that exists in all power distribution network s.
11 2 Installation Install the Softw are NOTE: A README.TXT file is included on the installation disks. I t contains product updates or corrections that are not documented in this m anual. Use any text editor to read this file. The Agilent 14761A HFTS software (p/n 5063-2363) com es on two disks.
2 - Installation 12 Installing Interface Card Drivers for Windows 3.1 or 3.11 Sy stems ñ If y ou are using an Agilent 82335 GPI B card, install the driv er software from the I /O Libraries CD-R OM (E2094) that came with the card. Open the win31 disk1 directory on the CD- ROM and run setup.
Installation - 2 13 icon to run the software.) When the software is run, it autom atically searches for an interface card and queries the Agilent 6800- Series AC Power Source/Analyzer for its m odel number. Verify that your configuration is correct as follows: 1.
2 - Installation 14 Default Settings In the O ptions menu, select Defaults to v iew the default settings. The following settings are configurable: ñ The line voltag e and frequency that will be applied to the equipm ent under test. ñ The quasi-stationary /fluctuating harm onics regulations v ersion that you will be testing to.
Installation - 2 15 Edit Copy Table Copies h ighli ghted in formati on from the table t o the Clipboard Copy Graph Copies th e presently display ed graph to the Clipboard View Main Lets you select the.
2 - Installation 16 Menu Tabs The menu tabs that are located at the bottom of the screen let you easily access the prim ary functions of the Agilent 14761A HFTS software.
17 3 Setting Up the Test If y ou have not already done so, click on the Agilent HFTS icon to run the software. Now you can set up y our test. If the Agilent HF TS icon does not appear on your com puter, go back to chapter 2 and install the Agilent 14761A HFTS softw are.
3 - Setting Up the Tes t 18 ñ Selecting New From Template opens a dialog box that lets you select a tem plate file which contains previously -config ured test setup information.
Setting Up the Tes t - 3 19 Create a Template Template files contain setup inform ation for the test that you will be running . Using tem plates can save valuable tim e by elim inating the need to enter repetitive data each tim e you set up a test. Create a tem plate by entering inform ation into the Main and the Test Setup windows.
3 - Setting Up the Tes t 20 Select the Test Setup Options for Quasi-stationary or Fluctuating Harmonics Standard Test Options Standard options specify the line v oltage, line frequency, test tim e, and device class for com pliance tests. They are selected in the Standard window.
Setting Up the Tes t - 3 21 Class D: Equipment hav ing an input current with a "special wave shape" (e.g . equipment with off-line capacitor- rectifier ac input circuitry and switch- mode power supplies) and an activ e input power ≤ 600 W.
3 - Setting Up the Tes t 22 ñ Select the rms and peak current limit of the Ag ilent 6800-Series AC Power Source/Analy zer that you will be apply ing to the equipm ent under test. (The Agilent Model 6843A only has rms current limit control, therefore, the peak current limit control does not appear.
Setting Up the Tes t - 3 23 Test Ter mination Options Termination options let y ou select the conditions that will terminate the test. They are selected in the Termination window.
3 - Setting Up the Tes t 24 If term ination On Watch Events is enabled, you can select the following Watch Items criteria: ñ All harmonics greater than the specified percent of threshold ñ Odd harm .
Setting Up the Tes t - 3 25 ñ Select the number of integ ration periods to be acquired during the test. The Resultin g Time field displays the test duration based on the num ber of integration periods as well as the Pst integration tim e that you have specified in the Adv anced window.
3 - Setting Up the Tes t 26 Test Termination Options Note The following conditions terminate any test automatically if the Agilent 6800- Series AC Power Source/Analy zer operating lim its are exceeded: Rail fault condition, Ov ertemperature, Overvoltag e, and SOA.
27 4 Running the Test Before actual test data can be acquired, the pre-test m ust be run. This is accomplished in the Pre-Test window. As its name im plies, the Pre-Test window centraliz es functions that, following test setup, need to be performed prior to running an actual test.
4 - Running the Tes t 28 3. It is also possible to increase the duration of the pre- test. One purpose of running a longer pre- test is to obtain more data ov er which the test results are averag ed.
Running the Tes t - 4 29 Pre-Test Power Statistics This screen provides additional inform ation about the active input power of the device under test. I t displays the following power measurem ents, w.
4 - Running the Tes t 30 Pre-Test Source Harmonics This screen displays the pre- test voltage data for harm onics 1- 40 on a worst-case basis. The Limit(% ) column indicates the perm issible lim its for each harmonic expressed as percentages of the fundam ental voltag e.
Running the Tes t - 4 31 To Run a Pre-test for Voltage Fluctuations Pre-Test Summary 1. Select the Pre-test menu tab on the bottom of the screen to access the Pre-test Sum mary window. You can also access the Pre- test window from the View/P re-test menu.
4 - Running the Tes t 32 display. The tabular data display ed in this window provides a perm anent record of the test conditions that existed at the time of the v oltage fluctuations test. ñ The Measured Values area on the right side of the display provide a record of the test conditions at the time the v oltage fluctuations pre- test was run.
Running the Tes t - 4 33 value of the wav eform by a one- shot rm s current value obtained from the wav eform data record. The quality of this m easurement is a function of the v ariability of the current waveform crest factor over the integ ration period used for the corresponding rms current m easurem ent.
4 - Running the Tes t 34 3. Select Perform post processing automatically at end of test execution to process test data imm ediately after the com pletion of the test. Post processing is required to g enerate test reports and to generate data for the Statistics and Probability displays.
Running the Tes t - 4 35 Manual On/A uto Off (see caution) The ON pushbutton is activ e, letting the operator m anually turn the output of the Agilent 6800- Series AC Power Source/Analyz er on from the Test window. The pictured control indicates that the output is presently off.
4 - Running the Tes t 36 Validation Mode Validation Mode is a special mode used to v alidate the software, hardware, and test method used to test to the harmonic current em issions regulation. I t is not intended to be a formal proof of perform ance. Validation Mode should only be used with the Quasi- Stationary Harm onics test type selected.
37 5 View ing Test Data During test runs, data is continuously acquired and displayed in the various Display windows. Use the menu tabs on the bottom of the screen or the View menu to access the v arious displays.
5 - Viewing Test Data 38 Search Parameters This control is only active when the display is set to Fixed. It puts up a dialog box that lets you search for specific item s in the test data that you are presently viewing. Click ing on the red button initiates a search backward in tim e from the present cursor location.
Viewing Test Data - 5 39 The Graph display presents the following test data in a graphical form at: ñ 40 harmonics including the fundam ental, along the X axis. ñ the harmonic magnitude along the Y axis in absolute v alues. You can edit the graph to display the data according to % of lim it on the Y- axis as described in the next section.
5 - Viewing Test Data 40 Displaying Data A ccording to % of Li mi t on the Y-Axis Click w ith the right mouse button on any area of the g raph. This puts up the Edit Graph Attributes dialog box, in which you can reform at the y axis to display the data in percent of the specification lim its rather than in absolute values.
Viewing Test Data - 5 41 Table Display The Table display is used to view Quasi- stationary or Fluctuating harm onic data. Note that the am ount of test data displayed in the table m ay be lim ited by the Span control. See “Using the Span Control” in chapter 6 for details.
5 - Viewing Test Data 42 ñ the number of f ailures for individual harm onics in the test to-date, as well as the num ber of failures for individual harm onics in the 2.5 minute window criteria. ñ the failure count that exceeds 50%, 75% , 90% , and 95% of the reg ulation’s limits.
Viewing Test Data - 5 43 The Time- series display presents the following data for the selected harm onic: ñ the total time of the selected span along the X axis.
5 - Viewing Test Data 44 Displaying Data A ccording to % of Li mi t on the Y-Axis Click w ith the right mouse button on any area of the g raph. This puts up the Edit Graph Attributes dialog box, in which you can reform at the y axis to display the data in percent of the specification lim its rather than in absolute values.
Viewing Test Data - 5 45 Statistics Display The Statistics display presents a sum mary of the Quasi-stationary or Fluctuating harm onic data for the entire test. Note: If no data appears in this display, g o back to the Test window and press the Run Post processing button to generate the statistics data.
5 - Viewing Test Data 46 Probability Display (for Quasi-stationar y or Fluctuating harmonics) The Probability display shows the cumulativ e failure probability (or percentile) of the quasi- stationary or fluctuating harm onic data for the entire test.
Viewing Test Data - 5 47 Viewing 2.5 M inute Window Failures For fluctuating harm onic tests, limit v alues are more com plex than those for quasi-stationary harmonics. The regulation for fluctuating harmonics allows values up to 1.5 tim es the limits for quasi- stationary harmonics during a maxim um of 10% of any observation period of 2.
5 - Viewing Test Data 48 2.5 Minut e Fai lures On t he G r aph Di spl ay 2.5 Minut e Fai lures On t he Time-Seri es Di spl ay.
Viewing Test Data - 5 49 View ing Voltage Fluctuations Pst Display The Pst display is used to view v oltage fluctuations and flick er data. When the test is running, the Pst display is updated at the com pletion of each integration period. Note that the am ount of test data displayed m ay be lim ited by the Span control.
5 - Viewing Test Data 50 Light g reen indicates that the maxim um v alue is within the regulation’s specification. Light red indicates that one or more m easured values are outside the reg ulation’s specification. The maxim um component percentiles are alway s light green, since no failure criteria is specified for these by the reg ulation.
Viewing Test Data - 5 51 The Probability display presents the following test data: ñ the magnitude of flicker perceptibility along the X axis (Pst = 1 is the threshold of irritability ). The value is the flicker perceptibility level that is exceeded for x% of the sam ples as indicated by the corresponding Y- axis values.
5 - Viewing Test Data 52 Distribution Display The Distribution display presents a sum mary of the Voltage fluctuations and Flicker test data. When the test is running, the Distribution display is updated at the completion of each integ ration period. Note that the amount of test data display ed may be limited by the Span control.
Viewing Test Data - 5 53 ñ the Rms Measurement area on the bottom of the screen provides a sum mary value of Dmax , Dc , and Dt voltage fluctuation failures. Sum mary values are the maxim um value for each type within the presently displayed integ ration period.
5 - Viewing Test Data 54 A green bar m eans that all values sum mariz ed by the bar are within the reg ulation’s specification. A red bar means that one or m ore values sum mariz ed by the bar are outside the regulation’s specification. ñ detailed rms information can be obtained by holding down the Shift key and double- clicking on a bar.
Viewing Test Data - 5 55 The Flicker display presents the follow ing data: ñ the total time of the selected rang e along the X axis. ñ the magnitude of flicker perceptibility units along the Y axis.
5 - Viewing Test Data 56 Editing the Graph A ttributes To change the attributes or the settings of a ny of the graphs, ñ Click w ith the right mouse button on any area of the g raph. This puts up the Edit Graph Attributes dialog box. From this dialog box y ou can select: ñ the Maximum v alues of the x and the y axes.
Viewing Test Data - 5 57 Copying Graphs and Tables to the Clipboard Using the Print Screen key board key The easiest way to put screen inform ation into the clipboard is to use the Print Screen keyb oa rd key. This puts all of the information that is display ed on the screen into the Clipboard.
5 - Viewing Test Data 58 View ing Reports Reports are available in either Short form or Long form , and can be previewed in the Report window. User remarks can be added to a test file by selecting the Rema rks menu tab. Menu tabs on the bottom of the screen let you quickly access each area.
Viewing Test Data - 5 59 Short For m Report The Short Form report includes summ ary information about the current test. This inform ation fits on one page. The following is a sample short form report of a Fluctuating Current Harm onics test: IEC 1000-3-2/EN 61000-3-2 Fluctuating Current Harmonics Test Date Performed: 06/15/97 Test Executed By: A.
5 - Viewing Test Data 60 Long Form Repor t The long form report presents all of the information as the short- form report but also includes all of the final test data, which appears on subsequent pages of the report.
Viewing Test Data - 5 61 Long-Form Report page #2 Pre-Test Source Harmonics Data: ------------------------------- Harmonic Limit Limit Max Max Number (%) (Abs) (%) (Abs) =========================================================================================== Fund.
5 - Viewing Test Data 62 Note For Voltage Fluctuations reports, depending on the number and leng th of the integration periods, the Final Test Data section of the report may include up to several dozen pag es.
Viewing Test Data - 5 63 Long-Form Report page #4 Final Test Statistics: ---------------------- Standard Maximum Maximum >50% >75% >90% >95% >100% 2.
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65 6 Searching for Specific Test Data The toolbar on top of the display screen, w hich is referred to as the Navigator toolbar and is described in the beginning of chapter 5, is used to search for specific data in the test record. There are two way s to search for specific test data.
6 - Searching f or Spec ific T es t Data 66 Using the Span Control The span control applies to the Harmonics g raph and table displays, the Pst display , the P robability display, and the Distribution display . It determ ines the range of test data that y ou want to examine in relation to the present cursor location.
Searching f or Specif ic T est Data - 6 67 Using the Zoom Control The zoom control applies to the Time Series display , the Rms display, and the F licker display . The time- series display only shows a lim ited number of data bars. Zooming in lets y ou view indiv idual data points in the time series.
6 - Searching f or Spec ific T es t Data 68 Obtaining Detailed Failure and Error Information Note : T his feature is not available for the Flick er Display. For detailed failure and error information about a specific bar in a g raphical display, proceed as follows: 1.
69 7 Printing Printing Graphs and Tables Using the Print Pre-test command The Print Pre-test command prints the currently displayed Pre- test screen to the default printer. The printout is slightly reformatted from what you see on the display . Note that the Print Pre- test comm and does not copy any information to the Clipboard.
7 - Printing 70 3. In the Print Report dialog box, select the document properties, page rang e, number of copies, or if you want collated copies. I f you hav e access to more than one printer, click on the downarrow to choose a different printer. From the Report window 1.
Printing 71 4. Click on OK to print the report. 5. Enter a filename in the dialog box that appears on the screen. The report w ill be saved in ASCI I format in the file y ou specified.
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73 A Specifications Supported or Referenced EN 61000-3-2 and EN 60555 P art 2 Standards IEC 555- 2 EN 61000-3- 2 EN 60555 Part 2 IEC 1000- 3-2 IEC 1000- 4-7 Supported or Referenced EN 61000-3-3 Standa.
A - Specif ications 74 Equipment S pecifications (IEC Mode) IEC mode specifications are warranted over the am bient temperature range of 0 to 40 ° C. Model Agilent 6812B, 6841A Agilent 6813B, 6842A Agilen t 6843A Num ber of Phases 111 Max i mum Output Rati ngs Output Power rms Voltage rms Current Peak Current 750 VA 300 V 6.
Specific ations - A 75 Ac Input Ratings and supplem ental inf ormati on Model Agilent 6841A Agilent 6842A Agilent 6843A Voltage Range (Vac) 87 - 106 Vac 104 - 127 Vac * 174 - 220 Vac 191 - 254 Vac 174.
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77 B Glossary Quasi-stat i onary Harmonics Quasi- stationary or steady- state harm onic currents are produced by electronic equipment that g enerates non-v arying levels of current distortion, where the am plitude of each harmonic rem ains constant over time.
B - Glo ssa ry 78 Te mplate Files Template files contain test- setup data that m ay be used in mu ltiple tests. By elim inating a portion of the setup task, using template files can stream line the test process. Template inform ation is included with the test data when the test is run.
Glossary - B 79 Failure s Failures are those conditions that will cause a test to fail the reg ulations. The number of failures are displayed in the status bar on the bottom of the screen. You can override the failure criteria by specify ing an override percent in the Test Setup Advanced Options window.
B - Glo ssa ry 80 D(t) (Relativ e Voltage Change Characteristic) The change in rm s voltage, relativ e to the nominal v oltage, as a function of tim e and between periods when the vo ltage is in a steady- state condition for at least 1 second. D(t) m ust not be > 3% for more than 200 m illiseconds continuously during a voltag e change event.
81 C IEC Mode Co mmand Summary Introduction The Agilent 6800- Series AC Power Source/Analyzer is design ed to operate in Normal as well as I EC mode. I n Norm al mode, the ac source responds to all of the com mands that prog ram ac source operation. Normal m ode comm ands are documented in the Ag ilent 6800 Series Program ming Guide.
C - Com mand Sum m ary 82 Comm and Syntax CALCulate :INTegral :TIME <Nrf +> :LIM it :UPPer [:DATA] <Nr f+> :SMOothing <bool> selects the Ps t integration tim e for flick er m eas urem ents sets various limits assoc iated with rms voltage fluctuation tes ting for IEC 1000-3- 3 turns the 1.
Comm and Sum m ary - C 83 CA LCulate:INTegral: TIME This comm and selects the Pst integration tim e for IEC Flick er measurem ents. The parameter m ay only assume v alues of 1, 5, 10, and 15 minutes in accordance with I EC 868.
C - Com mand Sum m ary 84 CA LCulate:LIM it:UPPer This comm and sets various lim its associated with rms v oltage fluctuations testing for IEC 1000- 3-3. as described in the following table. A ll five parameters are ty pe NRf. The order in which the fiv e parameters are entered m ust correspond to the order in the table.
Comm and Sum m ary - C 85 FORMat This comm and specifies the response data format for the follow ing queries: MEASure: ARRay:CURRent: DC? MEASure:AR Ray:VOLTage:D C? MEASure:ARRay:CURRent:HARMonic[:AM.
C - Com mand Sum m ary 86 FORMat: BORDer This command sets the byte order of IEEE floating point values returned wit hin Arbitrar y Block Response Data. When NO RMal is selected, the first byte sent is the sig n bit and seven mo st significant bits of the exponent, and the last byte sent is the least sig nificant byte of the m antissa.
Comm and Sum m ary - C 87 MEASure:A RRay :CURRent:HARMonic? This query returns an array of current harm onic m agnitudes. Operation of the query is m odified by the SYSTem:CO NF comm and (see sum mary table under SY STem:CONFig ure). The parameter specifies the number of harm onic arrays to be returned in response to the query .
C - Com mand Sum m ary 88 MEASure:A RRay :VOLTage:FLUCtuations: A LL? This query m easures voltage fluctuations in accordance w ith the IEC 868 standard.
Comm and Sum m ary - C 89 0 100 (120) rm s ↓ voltage values 99 repeat 60 ti mes 0 CALC :INT:TIME times <n > 100 (120) instantaneous ↓ flicker va lues 99 Record Number Error Code P_0.
C - Com mand Sum m ary 90 MEASure:A RRay :VOLTage:FLUCtuations: FLICker? This query m easures voltage fluctuations in accordance w ith the IEC 868 standard.
Comm and Sum m ary - C 91 MEASure:A RRay :VOLTage:FLUCtuations: PST? This query m easures voltage fluctuations in accordance w ith the IEC 868 standard. I t is only available when I EC mode is selected w ith SYSTem:CO NFigure. The param eter specifies the number of Pst integration periods for which data w ill be returned in response to the query.
C - Com mand Sum m ary 92 SENSe:CURRent: PREFerence This comm and sets the phase reference for current harmonic phase m easurements. I f VOLTage is selected, the reference is the fundamental com ponent of the measured output v oltage. I f CURRent is selected, the reference is the fundamental com ponent of the measured output current.
Comm and Sum m ary - C 93 SYSTem:CONFigure This comm and sets the overall operating mode for the Agilent 6800- Series AC Power Source/Analyz ers. The choices are normal m ode, which causes the product.
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95 D Class Determination The following flowcharts docum ent the class determination used by the Agilent 14761A HFTS software. Class determination is a function of the P re-test.
D - Class Determ ination 96 Class A Device Selected Class A Limit s Logi c (EN 61000-3-2).
Class Determ ination - D 97 Class B Device Selected Class B Limit s Logi c (EN 61000-3-2).
D - Class Determ ination 98 Class C Device Selected '0& Class C Limit s Logi c (EN 61000-3-2).
Class Determ ination - D 99 Class D Device Selected Class D Limit s Logi c (EN 61000-3-2).
D - Class Determ ination 100 EN 60555 Part 2 Regulation Selected Limits Logi c ( EN 60555 Part 2).
101 Index —2— 2.5 mi nute window , 79 —A— abort tes t button, 34 about menu com mand: , 15 acquiring test data , 27 adva nced options, 25 advanced test setup , 20, 33 auto on/auto of f, 34, 35.
Index 102 save as... , 14 flick er, 7, 8, 10, 25, 49, 51, 52, 54, 55, 77, 78, 79, 82, 88, 89, 90 flick er display , 54, 55, 65, 67 fluc tuating harm onics, 17, 20, 38, 77 fluc tuating harm onics, adv .
Index 103 printing from the repor t window , 70 from the f ile menu, 69 from the re port window , 70 Print Graph/T able com ma nd, 69 Pri n t Screen co mmand, 69 report dia log box,, 70 reports, 69 to.
Index 104 report , 15 test , 15 test setup> , 15 view ing 2.5 m inute window fa ilures, 47 voltag e fluctua tions, 17, 24, 31, 38, 49, 50, 62, 77 voltage th d , 28 calcu lating , 32 —W— watch e.
A gilent Sales and Support Offices For more inform ation about Ag ilent Technologies test and measurem ent products, applications, services, and for a cur rent sal es offi ce list ing, visit our web s ite: ht tp:// www.agilent.com/find/ tmdir You can also contact one of the following centers and ask for a test and measurem ent sales representative.
Manual Updates The following updates hav e been made to this m anual since the print revision indicated on the title page. 5/30/00 All references to HP hav e been changed to Ag ilent. All references to HP- IB have been changed to G PIB. Inform ation about Validation Mode has been added to page 36.
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