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2-9

IM WT310E-02EN

Making Preparations for Measurements

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App

Index

2.4 Turning the Power Switch On and Off

Before Turning On the Power, Check That:

• The instrument is installed properly. → section 2.2, “Installing the Instrument”
• The power cord is connected properly. → section 2.3, “Connecting the Power Supply”

Power Switch Location

The power switch is located in the lower left of the front panel.

Turning the Power Switch On and Off

The power switch is a push button. Press the button once to turn the instrument on and press it again
to turn the instrument off.

POW

ER

OFF

ON

WT310E/WT310EH

WT332E/WT333E

Operations Performed When the Power Is Turned On

When the power switch is turned on, a self-test starts automatically. When the self-test completes
successfully, the screen that was displayed immediately before the power was turned off appears.

Note

• After turning the power off, wait at least 10 seconds before you turn it on again.

When the Power-on Operation Does Not Finish Normally

• If the instrument does not operate as described above when the power switch is turned on, turn the power

switch off, and then:
• Check that the power cord is securely connected.

• Check that the correct voltage is coming to the power outlet. → section 2.3, “Connecting the Power

Supply”

• After checking the above, try turning on the power while holding down SET to initialize the settings (reset

them to their factory defaults). For details about initializing the settings, see section 3.3, “Initializing
Settings.”

• If the instrument still does not work properly, contact your nearest YOKOGAWA dealer for repairs.
• If an error code is displayed, see section 6.2, “Error Code Descriptions and Corrective Actions,” and take

the appropriate actions.

• It may take a few seconds for the startup message to appear.

To Make Accurate Measurements

• Allow the instrument to warm up for at least 30 minutes after turning on the power switch.

• After the instrument warms up, execute zero-level compensation. → section 8.3 of the User’s

Manual, IM WT310E-01EN

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Содержание WT332E

Страница 1: ...WT310E WT310EH WT332E WT333E Digital Power Meter Getting Started Guide IM WT310E 02EN 4th Edition User s Manual...

Страница 2: ...sing YOKOGAWA products YOKOGAWA provides registered users with a variety of information and services Please allow us to serve you best by completing the product registration form accessible from our w...

Страница 3: ...ion of Yokogawa offices worldwide is provided on the following sheet Document No Description PIM 113 01Z2 List of worldwide contacts Notes The contents of this manual are subject to change without pri...

Страница 4: ...r Meter Two input element model WT333E WT333E Digital Power Meter Three input element model Communication interface C1 GP IB interface The instrument is equipped with one of these C2 RS 232 interface...

Страница 5: ...er cord meets the designated standards of the country and area that you are using it in 2 A single instrument cannot have both the EX1 and EX2 options 3 Prepare a power cord that complies with the sta...

Страница 6: ...he designated standards of the country and area that you are using it in If the suffix code is Y a power cord is not included 2 Same number of sets as the number of installed input elements WT310E One...

Страница 7: ...erFreePlus Application Software For WT310E WT310EH WT332E WT333E WTViewerFreePlus_Installer exe WTViewerFreePlus folder YKMUSB folder PDF of the Manual for the WTViewerFreePlus Application Software Th...

Страница 8: ...ne set Rated voltage 1000 V 12 Alligator clip adapter set 758922 1 Two pieces in one set For use with measurement lead 758917 Rated voltage 300 V 1 758929 1 Two pieces in one set For use with measurem...

Страница 9: ...e following symbols are used on this instrument Warning handle with care Refer to the user s manual or service manual This symbol appears on dangerous locations on the instrument which require special...

Страница 10: ...the Protective Grounding Never cut off the internal or external protective earth wire or disconnect the wiring of the protective earth terminal Doing so may result in electric shock or damage to the...

Страница 11: ...item under measurement correctly Check that there are no short circuits between terminals or between connected cables The cables are connected firmly to the current input terminals There are no probl...

Страница 12: ...s instruments Brancher la prise de terre Avant de mettre l instrument sous tension penser brancher la prise de terre pour viter tout choc lectrique Le cordon d alimentation utiliser est un cordon d al...

Страница 13: ...courant Les c bles de mesure du courant n ont pas t malencontreusement branch s sur les bornes d entr e de tension Pour la mesure d alimentation multiphase v rifier que le c blage est correct Les c b...

Страница 14: ...ils sont sp cifi s comme accessoires Ne pas utiliser d accessoires d fectueux ATTENTION Limitations relatives l environnement op rationnel Ce produit est class dans classe A pour utilisation dans des...

Страница 15: ...y Directive EU Battery Directive This directive is valid only in the EU Batteries are included in this product This marking indicates they shall be sorted out and collected as ordained in the EU batte...

Страница 16: ...that can be taken to prevent such occurrences CAUTION Calls attentions to actions or conditions that could cause light injury to the user or damage to the instrument or user s data and precautions tha...

Страница 17: ...and then press SETUP UTILITY A menu appears in display B 2 Use or to select StorE Pressing either key cycles through 9 menu items 3 Press SET to confirm the selection of StorE The StorE function menu...

Страница 18: ...erform key operations Initialize settings User s Manual Chapter 2 Set the Measurement Conditions Measurement conditions User s Manual Section 4 1 Section 4 2 Section 4 3 Section 4 4 Section 4 5 Chapte...

Страница 19: ...2 7 Wiring for Accurately Measuring a Single phase Device 2 19 2 8 Guide for Selecting the Method Used to Measure the Power 2 20 2 9 Wiring the Circuit under Measurement for Direct Input 2 21 2 10 Wir...

Страница 20: ...cy 7 5 7 4 Features 7 9 7 5 External Current Sensor Input EX1 and EX2 options 7 14 7 6 D A Output DA4 DA12 Options 7 14 7 7 Remote Control Input Output Signal DA4 DA12 Options 7 15 7 8 GP IB Interface...

Страница 21: ...ce Communication Interface User s Manual External I O connector For connecting D A output and remote control cables chapter 5 For connecting voltage measurement cables sections 2 8 to 2 11 Voltage inp...

Страница 22: ...1 2 IM WT310E 02EN Top Panel Vent holes section 2 2 Inlet holes section 2 2 There are also inlet holes on the bottom panel 1 1 Front Panel Rear Panel and Top Panel...

Страница 23: ...nterface User s Manual External I O connector For connecting D A output and remote control cables chapter 5 For connecting voltage measurement cables sections 2 8 to 2 11 Voltage input terminals Curre...

Страница 24: ...1 4 IM WT310E 02EN Top Panel Vent holes section 2 2 Inlet holes section 2 2 There are also inlet holes on the bottom panel 1 1 Front Panel Rear Panel and Top Panel...

Страница 25: ...LINE Lights when the line filter is enabled Frequency filter indicator FILTER FREQ Lights when the frequency filter is enabled Storage indicator STORE When you start storage this indicator blinks at...

Страница 26: ...LTER FREQ Lights when the frequency filter is enabled Storage indicator STORE When you start storage this indicator blinks at the pace at which storage is taking place Remote indicator REMOTE Lights w...

Страница 27: ...nstrument uses a 7 segment LED display numbers letters and mathematical symbols are displayed using special characters in the manner shown below Some of the characters shown below are not used by this...

Страница 28: ...Mode VOLTAGE Key Displays the voltage range setting menu The AUTO indicator lights when the range is set to AUTO CURRENT Key Displays the current range setting menu The AUTO indicator lights when the...

Страница 29: ...held press SINGLE to measure data only once at the set data update interval and then update and hold the displayed values General Purpose Keys and Keys Select features and set values SHIFT Key Moves t...

Страница 30: ...ime SHIFT STOP Key RESET Resets the integrated value and the elapsed integration time Communication Interface INTERFACE Key Displays the communication interface setting menu and connection information...

Страница 31: ...D A output settings SHIFT SAVE LOAD HARMONICS Key Displays a setting menu for turning the harmonic measurement display on and off setting the PLL source etc SHIFT Key When you press the SHIFT key onc...

Страница 32: ...eanings of Auto Range Monitor Indicators Color Description Red Peak overrange Magenta Greater than 140 1 280 3 of the rated range overrange Yellow Greater than 130 2 260 3 of the rated range and not m...

Страница 33: ...the measurement range function or element is switched and the displayed contents change or when there is no data to display the following dashes are displayed temporarily Error Displayed in cases suc...

Страница 34: ...memory Numeric data storage Recorder Numeric data Setup parameters PC Printer Integration start Integration stop Hold single USB interface GP IB interface RS 232 interface Ethernet interface optional...

Страница 35: ...ord Pull from the plug If the power cord is damaged or if you are using the instrument in a location where the power supply specifications are different purchase a power cord that matches the specific...

Страница 36: ...hand caught between the wall installation surface or other objects and the instrument French AVERTISSEMENT Lorsque vous attrapez ou rabattez la poign e veillez ne pas vous coincer la main entre la po...

Страница 37: ...eets the following conditions Flat Even Surface Use the instrument on a stable surface that is level in all directions If you use the instrument on an unstable or tilted surface the accuracy of its me...

Страница 38: ...mbient humidity is 30 or less take measures to prevent static electricity such as using an anti static mat Condensation may occur if the instrument is moved to another place where the ambient temperat...

Страница 39: ...ay the handle or movable legs be careful not to get your hand caught between the handle or movable legs and the instrument Handling the movable legs or handle without firmly supporting the instrument...

Страница 40: ...ent WT310E WT310EH Rotate the handle to position 8 see the figure on the previous page and then pull out the rotating base of the handle by approximately 10 mm on both sides WT332E WT333E Remove the h...

Страница 41: ...here is no AC outlet that is compatible with the power cord that you will be using and you cannot ground the instrument do not use the instrument French AVERTISSEMENT Assurez vous que la tension d ali...

Страница 42: ...ermitted supply voltage range 90 VAC to 132 VAC 180 VAC to 264 VAC Rated power supply frequency 50 60 Hz Permitted supply frequency range 48 Hz to 63 Hz Maximum power consumption WT310E WT310EH 50 VA...

Страница 43: ...seconds before you turn it on again When the Power on Operation Does Not Finish Normally If the instrument does not operate as described above when the power switch is turned on turn the power switch...

Страница 44: ...attery When the lithium battery voltage falls below a specified value you will no longer be able to store setup parameters and error code 901 will appear on the screen when you turn on the power see s...

Страница 45: ...minals are electrically connected inside the instrument When connecting a measurement cable from an external current sensor to an external current sensor input terminal remove the cables connected to...

Страница 46: ...actor is 3 5 mA to 200 mA range When the crest factor is 6 or 6A 2 5 mA to 100 mA range Peak value of 150 A or rms value of 100 A whichever is less WT310EH When the crest factor is 3 1 A to 40 A range...

Страница 47: ...20 A whichever is less WT310EH When the crest factor is 3 1 A to 40 A range When the crest factor is 6 or 6A 0 5 A to 20 A range Peak value of 100 A or rms value of 44 A whichever is less External cu...

Страница 48: ...n c ble de mesure d un capteur de courant externe sur un connecteur d entr e de capteur de courant externe retirer les c bles branch s sur les bornes d entr e de courant De plus lorsque la tension du...

Страница 49: ...eur de cr te est de 3 de 5 mA 200 mA gamme Lorsque le facteur de cr te est de 6 de 2 5 mA 100 mA gamme Valeur cr te de 150 A ou valeur efficace de 100 A selon la valeur la plus basse WT310EH Lorsque l...

Страница 50: ...nt de 20 A utiliser des fils en cuivre section transversale conductrice de 4 mm2 Le branchement d un c ble de mesure sur ce produit peut entra ner une interf rence radio que l utilisateur sera tenu de...

Страница 51: ...Remove approximately 10 mm of the covering from the end of the cable and pass the cable through the internal insulator Cable Internal insulator Attachable cable Covering max diameter 3 9 mm Core wire...

Страница 52: ...minal Use the clamp on probes sold separately as shown below 96030 96031 96001 voltage output type 751552 current output type 758917 758921 758924 Current under measurement Connecting a clamp on probe...

Страница 53: ...u can minimize the effects of stray capacitance on measurement accuracy by connecting the instrument s current input terminal to the side that is closest to the earth potential of the power supply SOU...

Страница 54: ...section 2 11 Direct input Voltage transformer VT Current Measurement Methods When the Voltage Is 600 V or Less When the Current Is 20 A or Less When the Current Exceeds 20 A When the Current Is 40 A...

Страница 55: ...put Terminals Voltage Input Terminals The terminals are safety banana jacks female that are 4 mm in diameter Only insert a safety terminal whose conductive parts are not exposed into a voltage input t...

Страница 56: ...een the current input terminal and crimp on lugs French AVERTISSEMENT Lorsque la tension du circuit mesurer est appliqu e aux bornes d entr e de courant ne pas toucher les bornes d entr e de capteur d...

Страница 57: ...o insert the new stopper into the terminal base and hold it in place Hold the stopper with tweezers and insert it into the terminal base Wrap adhesive tape around a flathead screwdriver so that the ad...

Страница 58: ...urrent input terminals are labeled as U and I respectively Voltage input terminals Current input terminals V VOLTAGE terminal C CURRENT terminal CAUTION The thick lines on the wiring diagrams are the...

Страница 59: ...of terminal wiring positions shown in the following figures for wiring the voltage input and current input terminals To select which pattern to use see section 2 7 SOURCE LOAD U I C V LOAD U V I C SO...

Страница 60: ...the wiring diagram if you wire to the current input terminals first and then to the voltage input terminals In this example as well we will wire to the WT310E current input terminals first and then to...

Страница 61: ...olarities C Current input terminals C CURRENT terminal Round crimped terminal Power supply DUT The wiring for current measurement is complete SOURCE LOAD I C Wiring to the Voltage Input Terminals Conn...

Страница 62: ...ty terminal adapters to the WT310E voltage input terminals Red adapter Connect to the VOLTAGE voltage input terminal Black adapter Connect to the voltage input terminal Pay attention to the terminal p...

Страница 63: ...7 App Index You can also connect to the circuit under measurement by placing a terminal block near the WT310E and connecting the power cables and voltage measurement cables to the terminal block Term...

Страница 64: ...E Note The thick lines on the wiring diagrams are the parts where the current flows Use wires that are suitable for the current levels Wiring Examples of Single Phase Two Wire Systems 1P2W The followi...

Страница 65: ...3W The wiring is connected to input elements 1 and 3 Measure the line voltage using S phase power as the reference SOURCE LOAD I1 C I3 C U1 V U3 V R S T SOURCE LOAD Element 1 V1 A1 R S T Element 3 V3...

Страница 66: ...LOAD I1 C I3 C U1 V U3 V R N S T SOURCE Element 1 V1 A1 R S T Element 2 V2 A2 LOAD Element 3 V3 A3 U2 V I2 C C V C V C V Note For details about the relationship between the wiring system and how meas...

Страница 67: ...iring procedure for a single phase two wire DUT on page 2 26 is a useful reference for thinking about the voltage of each phase and the current wiring Order of Connection Generally it is easier to fol...

Страница 68: ...th the wrong polarities T S R C Current input terminals C CURRENT terminal R T 1 3 R S T Power supply DUT The wiring for current measurement is complete T S R SOURCE LOAD I1 C I3 C R S T 1 3 R S T Not...

Страница 69: ...ions Sufficient dielectric strength for the voltage of the circuit under measurement Of a size to which the 758931 Safety Terminal Adapter can be attached Covering max diameter 3 9 mm Core wire max di...

Страница 70: ...ut terminals of elements 1 and 3 Pay attention to the terminal polarities so that you don t attach the cables to terminals VOLTAGE and with the wrong polarities T S R V Voltage input terminals V VOLTA...

Страница 71: ...wiring for a three phase three wire system Wiring to the Current Input Terminals In the aforementioned steps 1 and 2 connect the current input terminals of element 2 to the S phase power cable Wiring...

Страница 72: ...that are 4 mm in diameter Only insert a safety terminal whose conductive parts are not exposed into a voltage input terminal If you are using the included 758931 Safety Terminal Adapter see section 2...

Страница 73: ...that you have the polarities correct when you make connections If the polarity is reversed the polarity of the measurement current will be reversed and you will not be able to make correct measuremen...

Страница 74: ...l current sensor cables LOAD Shunt type current sensor External current sensor input terminal V Voltage input terminals This instrument Ungrounded Measurement Circuits When the circuit under measureme...

Страница 75: ...The following figures show how to connect to the WT310E WT310EH SOURCE LOAD Earth side OUT L OUT H Shunt type current sensor SOURCE LOAD Earth side Clamp type current sensor that outputs voltage C V...

Страница 76: ...age substitute the shunt type current sensor with the clamp type current sensor Shunt type current sensor I OUT L OUT H Input element Input element Clamp type current sensor that outputs voltage EXT C...

Страница 77: ...t Type Current Sensors The wiring is connected to input elements 1 and 3 Measure the line voltage using S phase power as the reference SOURCE LOAD R S T OUT L OUT H OUT L OUT H Element 3 Element 1 EXT...

Страница 78: ...ements 1 2 and 3 SOURCE LOAD R S T OUT L OUT H OUT L OUT H Element 3 Element 1 Element 2 OUT L OUT H EXT EXT EXT C V C V C V Note For details about the relationship between the wiring system and how m...

Страница 79: ...onnecting to the Input Terminals Voltage Input Terminals The terminals are safety banana jacks female that are 4 mm in diameter Only insert a safety terminal whose conductive parts are not exposed int...

Страница 80: ...ch s sur les bornes d entr e de courant De plus lorsque la tension du circuit mesurer est appliqu e aux bornes d entr e de capteur de courant externe ne pas toucher les bornes d entr e de courant car...

Страница 81: ...sy to reverse the connection Note that the frequency and phase characteristics of the VT or CT affect the measured data For safety reasons the common terminals of the secondary side of the VT and CT a...

Страница 82: ...nals Wiring Example The following figures show how to connect to the WT310E WT310EH SOURCE LOAD L CT VT V v SOURCE LOAD VT V v C V Pass through CT C V VT and pass through CT VT and CT SOURCE LOAD VT V...

Страница 83: ...Input element C V Voltage input terminals Current input terminals WT332E WT333E Also the wiring examples are for when a CT is connected When connecting a pass through CT or a clamp type current sensor...

Страница 84: ...lement 1 Element 1 C V C V Wiring Example of a Single Phase Three Wire System 1P3W with VTs and CTs The wiring is connected to input elements 1 and 3 SOURCE L CT VT V v LOAD L CT VT V v N Element 1 El...

Страница 85: ...V Wiring Example With the Three Voltage Three Current Method 3V3A and VTs and CTs Model Applies to the WT333E The wiring is connected to input elements 1 2 and 3 SOURCE LOAD S T R L CT VT V v L CT VT...

Страница 86: ...al communication control programs WT310E WT310EH WT332E WT333E PC monitor Saved data Setting changes This instrument can be connected to a PC using the following communication interfaces USB GP IB RS...

Страница 87: ...Follow the instructions on the screen to install the software The following two items will be installed one after the other WTViewerFreePlus YKMUSB USB driver 6 On Windows Vista or Windows 7 the User...

Страница 88: ...erFreePlus User s Manual IM 760121 02E Example of a Window for Configuring This Instrument You can change the settings of this instrument from a PC Example of a Window Showing the Measured Data of Thi...

Страница 89: ...wice The first time is for the positive measurements and the second time is for the negative measurements MATH and THD are displayed on the left side of the 7 segment LED display Press SHIFT before pr...

Страница 90: ...T The SHIFT key illuminates to indicate that the keys are shifted Now you can select the setup menus and functions written in purple below the keys 2 Press the desired setup or execution key Using the...

Страница 91: ...SHIFT when the digit that is being set is the digit that is furthest to the right the digit that is being set will switch to the leftmost digit that can be set Moving the Decimal Point Press SHIFT to...

Страница 92: ...that you have entered or when you want to redo measurement from scratch Procedure Follow the procedure indicated by the thick lines in the following menu 3 Display C 4 5 End the operation and if YES...

Страница 93: ...nge blinks in display C If you previously set the voltage range to the AUTO indicator for the voltage range is lit the voltage range that has been automatically selected on the basis of the measured v...

Страница 94: ...n automatically selected on the basis of the measured current blinks 2 Press or to display the current range that you want to select in display C 3 Press The current range is confirmed and each of the...

Страница 95: ...ual IM WT310E 01EN WT332E WT333E Current Ranges Display C 1 3 Confirm the setting Display C 1 3 Confirm the setting When the Crest Factor Is Set to 6 or 6A When the Crest Factor Is Set to 3 The unit i...

Страница 96: ...ut element the average current and voltage of each of the wired input elements and the total power of each of the input elements are displayed in accordance with the selected wiring system The current...

Страница 97: ...A on the WT310E WT310EH Function keys Press the key for display A and select V When you press the function and unit indicators for display A light in the following order To display the voltage on dis...

Страница 98: ...the decimal point so that the measured value can be displayed using the number of digits available in display A The unit prefix changes in accordance with the position of the decimal point m 10 3 k 10...

Страница 99: ...quer de tension hors de la plage 0 5 V aux broches d entr e de la t l commande Ne pas court circuiter non plus les broches de sortie ni y appliquer de tension externe Le cas ch ant un dysfonctionnemen...

Страница 100: ...e Black 2 Yellow Red 2 Yellow Black 2 Pink Red 2 Pink Black 2 Orange Red 3 Gray Red 3 Gray Black 3 White Red 3 White Black 3 Core Wire Color No Connection No Connection No Connection No Connection D A...

Страница 101: ...al I 0 Option Remote Control I O Circuit 0 01 F 0 01 F 5 V 5 V 10 k 10 k 100 L level 0 V to 1 V H level 4 V to 5 V Input circuit Output circuit L level 0 V to 1 5 V 8 mA H level 2 8 V to 5 V 8 mA 5 1...

Страница 102: ...Use this signal when you are observing integration Approx 25 ms or more Approx 25 ms or more Holding the Updating of Displayed Data This produces the same effect as pressing HOLD Apply an EXT HOLD sig...

Страница 103: ...WT333E A B 3 8 9 10 Press and to set area A the output function Press to move to area B Press and to select an element you cannot select an element for On the WT332E WT333E select the element in the f...

Страница 104: ...d integrated values using a 5 V FS DC voltage Number of Channels The number of channels varies depending on the specific option that is installed DA4 option on the WT310E WT310EH 4 channels DA12 optio...

Страница 105: ...edural explanation for setting the D A output format You can select from the following options u voltage U i current I P active power P VA apparent power S VAr reactive power Q PF power factor dEG pha...

Страница 106: ...for all math functions except for those indicated below is 0 V Efficiency average active power during integration D A Output Range Mode Range Mode You can select the D A output range mode from the fo...

Страница 107: ...ator function provide your own relay and relay driving circuit Below the lower limit 5 V output Greater than or equal to the lower limit and less than the upper limit 0 V output Greater than or equal...

Страница 108: ...Approx 7 0 V 5 0 V 0 5 0V 100 100 140 140 Approx 7 0 V Approx 7 5 V Displayed value Displayed Value 140 100 0 100 140 Output Approx 7 0 V 5 0 V 0 V 5 0 V pprox 7 0 V The range between 5 to 7 V and 5 t...

Страница 109: ...ue is 600 W the output is 600 W 1500 W 5V 2 0 V 1 For information about the power range of wiring unit see the table of function expressions on the second page of the appendix in the User s Manual IM...

Страница 110: ...eck the measurement cable wiring 2 8 to 2 11 Check the wiring system Applies to the WT332E WT333E 2 8 to 2 11 2 21 Confirm that the line filter is off 2 91 Check the measurement period settings 2 81 C...

Страница 111: ...ntegration during an integration operation 5 32 843 The integrated value overflowed during integration or ended abnormally because of power failure or some other reason Reset the integration operation...

Страница 112: ...ble below as a general guideline For part replacement and purchase contact your nearest YOKOGAWA dealer Part Name Recommended Replacement Interval Current input relay only for the WT310E A relay for s...

Страница 113: ...6 4 IM WT310E 02EN 6 4 Calibration and Adjustment For calibration and adjustment contact your nearest YOKOGAWA dealer...

Страница 114: ...tance Approx 2 M input capacitance Approx 13 pF in parallel with the resistance Current Direct input WT332E WT333E Crest factor 3 0 5 A 1 A 2 A 5 A 10 A 20 A Crest factor 6 or 6A 0 25 A 0 5 A 1 A 2 5...

Страница 115: ...RMS value of 40 A whichever is less WT310E Crest factor 3 5 mA 10 mA 20 mA 50 mA 100 mA 200 mA Crest factor 6 or 6A 2 5 mA 5 mA 10 mA 25 mA 50 mA 100 mA Peak value of 30 A or RMS value of 20 A whichev...

Страница 116: ...WT310EH and external current sensor input EX2 Option Within 0 001 f of range Maximum rated range Rated range The maximum rated range is 600 V for the voltage input terminal and 20 A for the current i...

Страница 117: ...Hz A Hz THD V THD A D D D D voltage frequency current frequency total harmonic distortion of voltage total harmonic distortion of current During harmonic measurement Item Indicator Displayed On Meanin...

Страница 118: ...1 of reading 0 2 of range 1 kHz f 10 kHz 0 07 f of reading 0 3 of range 0 07 f of reading 0 3 of range 0 13 f of reading 0 3 of range 10 kHz f 20 kHz 0 13 f of reading 0 5 of range 10 kHz f 100 kHz 0...

Страница 119: ...en the current exceeds 20 A are reference values WT310E only The maximum current input is 6 A when the frequency is over 30 kHz up to 100 kHz Input range 1 to 130 with respect to the rated range of vo...

Страница 120: ...xternal current sensor input EX2 50 V C Influence of self generated heat caused by voltage input Add 0 0000001 U2 of reading to the AC power accuracies Add 0 0000001 U2 of reading 0 0000001 U2 of rang...

Страница 121: ...e as the temperature coefficient for voltage and current Accuracy when the crest factor is set to 6 or 6A Accuracy obtained by doubling the measurement range error for the accuracy when the crest fact...

Страница 122: ...red value is updated Range decrease The range is decreased when all of the following conditions are met Crest factor 3 Urms or Irms is less than or equal to 30 of the measurement range Urms or Irms is...

Страница 123: ...imeout setting Timeout lower limit frequency 1 s 2 0 Hz 5 s 0 5 Hz 10 s 0 2 Hz 20 s 0 1 Hz Only for the direct current input of the WT310EH the maximum measurement range is 20 kHz Measurement range Au...

Страница 124: ...factor peak value RMS value of voltage and current Four arithmetic operation Six types of four arithmetic operations possible A B A B A B A B A2 B and A B2 Average active power during integration Com...

Страница 125: ...Voltage Current Power 10 Hz f 45 Hz 0 15 of reading 0 35 of range 0 15 of reading 0 35 of range 0 35 of reading 0 50 of range 45 Hz f 440 Hz 0 15 of reading 0 35 of range 0 15 of reading 0 35 of rang...

Страница 126: ...9 9 Crest factor 99999 9999 Four arithmetic operation 99999 9999 Average active power 99999 9999 Voltage peak 99999 9999 Current peak 99999 9999 Power peak 99999 9999 The computation accuracy the valu...

Страница 127: ...function for stored measurement data In the case of Auto Update Rate cannot store the measurement data Setup information Saves Loads four patterns of setup information Number of blocks which can be st...

Страница 128: ...1992 Code ISO ASCII codes Mode Addressable mode Addresses 0 to 30 Clear remote mode Press LOCAL to clear remote mode except during Local Lockout 7 9 Serial RS 232 Interface Standard on C2 Item Specifi...

Страница 129: ...10BASE T Transfer rate 100 Mbps max Communication protocol TCP IP Supported services DHCP remote control VXI 11 Modbus TCP 7 12 Safety Terminal Adapter Item Specifications Maximum allowable current 36...

Страница 130: ...12 options Current input protection cover 1 piece that matches the main unit Hind feet rubber 1 set User s manual 1 piece this manual Safety terminal adapter WT310E WT310EH Red Black 1 set WT332E Red...

Страница 131: ...ll outlet wired to a distribution board 3 This instrument is measurement category II product Do not use for Measurement Categories III and IV Measurement category O applies to measurement of other cir...

Страница 132: ...unting surface Mounting surface Mounting surface 20 20 20 250 213 88 179 19 480 460 99 50 24 5 99 50 24 5 480 460 482 6 460 482 6 463 88 76 2 5 9 88 76 2 5 9 Mounting surface 20 11 6 11 6 7 1 7 1 Unle...

Страница 133: ...e 20 20 20 213 13 132 20 480 460 24 5 149 100 24 5 480 460 482 6 460 482 6 463 37 4 132 57 2 37 4 Mounting surface 20 6 17 6 7 1 7 1 Unless otherwise specified tolerances are 3 however tolerances are...

Страница 134: ...fect of iV on the measurement accuracy is 0 01 or less If the input voltage is 100 V and the current is 5 A iV 0 05 mA 100 V 2 M so the effect of iV on the measurement accuracy is 0 001 0 05 mA 5 A SO...

Страница 135: ...nt circuit Outer case Grounding Shielded case of the current measurement circuit As an example we will consider the case when the outer case and one side of the power supply are grounded In this case...

Страница 136: ...t be ignored If you connect the current input terminal of this instrument to the side of the power supply SOURCE that is close to its earth potential the current measurement circuit of this instrument...

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