Kyoritsu Electrical Instruments Works KEW6315 Instruction Manual
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Kyoritsu Electrical Instruments Works KEW6315 Instruction Manual

Power quality analyzer
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Instruction Manual
Power Quality Analyzer
KEW6315

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Summary of Contents for Kyoritsu Electrical Instruments Works KEW6315

  • Page 1 Instruction Manual Power Quality Analyzer KEW6315...

  • Page 3: Table Of Contents

    Contents KEW6315 Contents···················································································································· 1 Unpacking Procedure ······························································································· 5 Safety warnings ········································································································ 8 Chap. 1 Instrument overview ·················································································· 11 1.1 Functional overview ················································································· 11 1.2 Features ··································································································· 13 1.3 Constructional drawing ············································································· 14 1.4 Steps for measurement ············································································ 15 Chap.2 Instrument layout ························································································ 16 2.1 Display (LCD)/ Keys ·················································································...
  • Page 4 4.3 Placing / removing SD card ······································································ 33 Inserting SD card ··············································································· 34 Removing SD card ············································································· 34 4.4 Voltage test leads and Clamp sensor connection ······························ 35 4.5 Start KEW6315 ·················································································· 36 Start-up Screen ·················································································· 36 Cautionary message ·········································································· 36 4.6 Recording procedures ········································································ 37 Start of recording ···············································································...
  • Page 5 5.6 Saved data ······························································································· 82 To delete, transfer or format the recorded data ·································· 82 Type of the saved data ······································································· 87 KEW6315 settings and Data loading ················································· 89 Chap. 6 Displayed items ························································································· 92 6.1 Instantaneous value “W” ·········································································· 92 List display of the measured values ···················································...
  • Page 6 KEW6315 Contents 6.7 Power quality ·························································································· 114 Factors impair power quality and symptoms ···································· 114 Displaying recorded events ······························································ 116 Displaying measured flicker values in list form ································· 120 Displaying trend graph of Pst, 1min ················································· 121 Displaying changes of Plt ································································· 122 Chap.7 Other functions ·························································································...

  • Page 7: Unpacking Procedure

    Unpacking Procedure KEW6315 Unpacking procedure We thank you for purchasing our Power Quality Analyzer “KEW6315”. Please check the contents and instrument before use. ● Items listed below are included with the standard set: Main unit KEW6315 :1 pce MODEL7255 :1 set...
  • Page 8 KEW6315 Unpacking Procedure 1. Main unit 2. Voltage test lead 3. Power cord 4.USB cord 5. Quick manual 6.CD-ROM 7. Battery 8. SD card 9. Carrying case M-8326-02 10. Input terminal plate 11. Cable marker KEW6315 - 6 -...
  • Page 9 Unpacking Procedure KEW6315 12. Clamp sensor (depending on model purchased) 50A Type(ø24mm) M-8128 100A Type(ø24mm) M-8127 200A Type(ø40mm) M-8126 500A Type(ø40mm) M-8125 1000A Type(ø68/110mm） M-8124/KEW8130 13. Instruction manual for Clamp sensor 3000A Type(ø150/170mm） KEW8129/8133 10A Type(ø24mm) M-8146 10A Type(ø40mm) M-8147 10A Type(ø68mm)

  • Page 10: Safety Warnings

    KEW6315 Safety warnings Safety warnings This instrument has been designed, manufactured and tested according to IEC 61010-1: Safety requirements for Electronic Measuring apparatus, and delivered in the best condition after passing quality control tests. This instruction manual contains warnings and safety procedures which have to be observed by the user to ensure safe operation of the instrument and to maintain it in safe condition.
  • Page 11 Safety warnings KEW6315 DANGER ● The instrument is to be used only in its intended applications or conditions. Otherwise, safety functions equipped with the instrument will not work, and instrument damage or serious personal injury may occur. Verify proper operation on a known source before taking action as a result of the indication of the instrument.
  • Page 12 KEW6315 Safety warnings ● Never disconnect sensors from the connectors of the instrument while the instrument is in use. ● Connect to the downstream side of a circuit breaker since a current capacity at the upstream side is large. ● Do not touch two lines under test with the metal tips of the test leads.

  • Page 13: Functional Overview

    1.1 Fu nctional overvie KEW6315 ap. 1 Ins strumen nt overv view Function nal overview Start/ Stop Choose either “Q Quick start guide e” or “Start now” ” to start recording. Can d do simple and fa ast start-up settin ng by selecting “Quick...
  • Page 14 KEW63 1.1 Function al overview Wavef form Waveform ms of voltage and d current per CH H are displayed on a graph. See “6.5 W 07) for further de etails. Waveform” (P.1 armonic An nalysis Harm monic compone nts of voltage an nd current per C CH are disp...

  • Page 15: Features

    Voltage and current can be displayed by waveform or vector. Saving data KEW6315 is endowed with a logging function with the preset recording interval. Data can be saved by manual operation or by specifying date & time. Screen data can be saved by using the Print Screen function.
  • Page 16 KEW63 1.3 Construction al overview Construc ctional draw wing Current in nput AC Voltage input Power c cord Digital output (1 ch) to recorder r or alarm Analog input (2 c from therm mometer or illuminom meter Size e AA alkaline dry y-cell batt tery (LR6) or...

  • Page 17: Steps For Measurement

    Chap. 4: Getting started (P.27) Cord and Sensor Connection Clause 4.4: Voltage test leads and Clamp sensor connection (P.35) Turning on the instrument. Clause 4.5: Start KEW6315 (P.36) Making basic settings. Reading the setup data Clause 5.2: Basic setting (P.48) Clause 5.6: Saved data (P.82)

  • Page 18: Chap.2 Instrument Layout

    KEW6315 2.1 Display (LCD)/ Keys Chap.2 Instrument layout Display (LCD)/ Keys Display (LCD) Keys KEW6315 - 16 -...

  • Page 19: Connector

    2.2 Connector KEW6315 2.2 Connector AC Voltage Input Terminal (VN, V1, V2, V3) Current Input Terminal (A1, A2, A3, A4) Terminal Cover Power Connector AC Voltage Input Current Input Wiring configuration Terminal Terminal* Single-phase 2-wire (1-system) 1P2W×1 VN, V1 Single-phase 2-wire (2-system) 1P2W×2...

  • Page 20: Side Face

    KEW6315 2.3 Side face Side face < When the Connector cover is closed. > USB port cover SD slot cover Analog input/ Digital output cover < When the Connector cover is opened. > SD card slot USB port Analog input/ Digital output terminals...

  • Page 21: Voltage Test Lead And Clamp Sensor

    Voltage test lead and Clamp sensor <Alligator clip> * Attached to the top part of voltage test lead Protective fingerguard <Clamp sensor> Barrier Protective fingerguard and barrier is a mechanical safety part and provides protection against electrical shock and ensuring the minimum required air and creepage distances. Keep your fingers and hands behind the protective fingerguard and barrier during a measurement.

  • Page 22: Key Operation

    KEW6315 3.1 Key operation Basic operations 3.1 Key operation PRINT SCREEN Function Save the displayed screen as BMP file. Execute the displayed function. DATA HOLD Key/ KEY LOCK Hold the readings on the display. * Measurement continues while the readings are being held on the display.

  • Page 23: Icons On The Lcd

    3.2 Icons on the LCD KEW6315 Icons on the LCD Icon Status KEW6315 is operating with battery. This icon varies in 4 steps according to the battery power condition. KEW6315 is operating with AC power. Holding the display update. Keys are locked.

  • Page 24: Symbols On The Lcd

    KEW6315 3.3 Symbols on the LCD Symbols on the LCD Phase voltage Line voltage Current Active Reactive Apparent consumption lagging power power power regenerating leading Power lagging Frequency factor leading Analog input Analog input voltage at 1ch voltage at 2ch...

  • Page 25: Screens

    Inst/ Int tegration/ Dema KEW6315 Screens nst/ Integra ation/ Dem Switching g screens Press t to toggle the scr reens. W (Inst v value) Wh (Inte gration value Demand Customize Select and cha nge the items to o be displayed.

  • Page 26: Vector

    KEW63 Vector ector Switchi ng screens Wiring check ecked results wi ll be displayed. Wiring diagram Diag gram of the selec cted wiring is displ ayed. Waveform Switchin ng screens KEW63 - 24 4 -...
  • Page 27 Harmon nics KEW6315 armonics Switchin ng screens oltage, Linear, O Overall display Current Power ogarithm Zoom List, Rate of content RMS value hase angle Power Current - 25 - KEW6315...

  • Page 28: Power Quality

    KEW63 wer quality ower quali Switchin ng displayed i items Flicker Even ettings Switching displayed items Toggle t he screens wit th the Cursor Key. (rig ght or left KEW63 - 26...

  • Page 29: Preparation

    Putting Input terminal plate on the Input terminal KEW6315 Getting started Preparation Putting Input terminal plate on the Input terminal Six Input terminal plates are supplied with this instrument. Choose one Plate which matches the standard cord colors where the instrument is used. Put the Plate to the Input terminal observing the orientation.

  • Page 30: Attaching Markers To Voltage Test Leads And Clamp Sensors

    KEW6315 Attaching Markers to Voltage test leads and Clamp sensors Attaching Markers to Voltage test leads and Clamp sensors Attach Markers to the both ends of the Voltage test leads and Clamp sensors harmonized with the Input terminals. * Supplied Markers are 32 pcs in total : 4pcs each color (red, blue, yellow, green, brown, gray, black, white).

  • Page 31: Power Supply

    Power Supply Battery KEW6315 operates with either an AC power supply or batteries. Capable of performing measurements in the event of AC power interruption, power to the instrument is automatically restored by the batteries installed in the instrument. Size AA alkaline dry-cell batteries (LR6) or size AA Ni-MH batteries can both be used.

  • Page 32: Battery Mark On The Lcd/ Battery Level

    KEW6315 Battery Mark on the LCD/ Battery level Battery Mark on the LCD/ Battery level Power supply icon changes as follows, and the battery icon varies according to the battery condition. Powered by AC 4-level Possible continuous measurement hours: - approx 3 hours with size AA alkaline batteries, and Powered by - approx 4.5 hours with size AA Ni-MH (1900mA/h)

  • Page 33: How To Install Batteries

    How to install batteries KEW6315 How to install batteries: Follow the steps below and install batteries. Battery compartment Screw cover LR6: Size AA Alkaline battery Disconnect the power cord, voltage test leads and clamp sensors from the instrument, and power off the instrument.
  • Page 34 KEW63 Power su upply rating Follow the proced dure below, and connect the Po ower cord. Confirm th hat the instrume ent is powered of Connect t he Power cord t to the Power con nnector on the in nstrument. * Connect t another end of the Power cord...

  • Page 35: Placing / Removing Sd Card

    “Stop recording.” disappears. Notes: ● Newly purchased SD cards must be formatted with KEW6315 before use. Data might not be successfully saved on SD cards that are formatted with a PC. For the details, please refer to “Format” (P.86) in this manual.

  • Page 36: Inserting Sd Card

    KEW6315 Inserting SD card Inserting SD card: Open the Connector cover. Insert the SD card into the SD card slot with the topside turned up. Then close the cover. Please use the instrument with the Connector cover closed unless it is not necessary.

  • Page 37: Voltage Test Leads And Clamp Sensor Connection

    4.4 Voltage test leads and Clamp sensor connection Check the following before connecting the test leads and sensors. DANGER ● Use only the Voltage test leads supplied with this instrument. ● Use the dedicated Clamp sensors for this instrument, and confirm that the measurement current rating of the Clamp sensor is not exceeded.

  • Page 38: Start Kew6315

    KEW63 Start t-up Screen Start KE W6315 Start-up Sc reen Hold down the OWER key until the following sc creen is displaye ed on the LCD. T To power off the nstrument, hold d down the POWE key at least 2 2 seconds.
  • Page 39 Start o of recording KEW6315 Recordin ng procedu ures Start of rec cording ress the Key. Choos e either “Quick s start guide” or “S Start now” to sta art recording. On ne can do the sim mple and fast sta...

  • Page 40: End Of Recording

    KEW6315 End of recording End of recording Press the Key. Data no. Recording method Items to be recorded Check the information about recording, or stop the recording. Items displayed on the LCD Data no. Data no. of the recorded data. It is also used as a folder name at data saving.
  • Page 41 Start m measurement wit th “Quick start g guide” KEW6315 Start me easuremen t with “Qui ick start gu uide” Select the Sele ect the Confirm t Check the te recording ite ring system connec ctions environment (1) Select t...
  • Page 42 KEW63 Start measurem ent with “Quick start guide” Star Select th Select the eck the rec. interv rec. method select ted method record ding (6) Sele ect a recordin ng interval. * Selec cting a short inte erval gets the file e size large.
  • Page 43 “ ” e (2) Wiring system Any of the following can be selected. Load Load 1P2W×1 1P3W×1 1P2W 1P3W Load 1P2W×2 1P2W 1P3W×2 Load Load 1P2W×3 1P2W 1P3W Load 1P2W×4 1P2W L1(R) L1(R) L1(R) L1(R) Load Load L2(S) L2(S) 3P3W×1 L2(S) L2(S) 3P3W...
  • Page 44 KEW63 Start measurem ent with “Quick start guide” )(5) Test Envi ronment Che witching scree Test e environment c check Select “ Start test ”and d press the “ENT TER” Wirin ng check button to start the test. . The test result will be display yed on the scree...
  • Page 45 Start m measurement wit th “Quick start g guide” KEW6315 G judgment iring check Close the e result display. Then, the blinkin ng vectors and t values of f NG items will b be displayed. If e everything is OK...
  • Page 46 KEW63 Start measurem ent with “Quick start guide” elf-diagnosis If “N NG” judgment is s given frequentl y, there might be e something wro ong with the inst trument. Stop us sing the inst trument and refe er to “Chap.11 T Troubleshooting g”...
  • Page 47 Start m measurement wit th “Quick start g guide” KEW6315 (8)( (9) Setting fo r recording m method following explai ins how to set re ecording start da ate and time. Specify the e recording st tart date and time.
  • Page 48 KEW63 Start measurem ent with “Quick start guide” witching of dis splayed param meters sically, the Curs is used for selec cting an item, th ENTER is for confi rming the sele ection, and the s for canceling th he alternation. T Taking the proce dures in “Quick Start...

  • Page 49: List Of Setting Items

    Configure the environmental setting. Each setting Saved data Measurement Recording Others Basic (REC data) (Demand) (REC item) (Environment) (Wiring) (KEW6315 setting) (Harmonics) (REC method) (KEW6315 setting) (Voltage) (Power quality) (Manual/ (Current) Constant rec./ Time period rec.） (Flicker) (External input DC)

  • Page 50: Basic Setting

    KEW6315 Basic setting Basic setting Press the Key. Use the Key to display the Basic setting screen. KEW6315 - 48 -...

  • Page 51: Settings Of Wiring System

    Settings of wiring system KEW6315 Settings of wiring system ”Basic wiring” Choose one according to the wiring system to be measured. Selection (1) 1P2W×1 (5) 1P3W×1 (7) 3P3W×1 (2) 1P2W×2 (6) 1P3W×2 (8) 3P3W×2 (3) 1P2W×3 (9) 3P3W3A (4) 1P2W×4...
  • Page 52 KEW6315 Settings of wiring system Wiring diagrams When the blue highlight is located at “Wiring”, you can check the wiring diagram of the selected wiring system with the key. The displayed diagram can be switched with key. Confirm. Cancel. KEW6315...

  • Page 53: Wiring Connection

    Wiring connection KEW6315 Wiring connection Read the following precautions prior to wiring connection. DANGER ● With attention to the measurement category to which the object under test belongs, do not make measurements on a circuit in which the electrical potential exceeds the following values.
  • Page 54 KEW6315 Wiring connection Clamp sensor direction for correct measurement: ● Confirm that the wiring system selected with the instrument and of the measured line are harmonized. ● Ensure that the arrow mark on the clamp sensor points towards to load side.

  • Page 55: Settings Of Voltage Measurement

    Settings of voltage measurement KEW6315 Settings of voltage measurement “Voltage range” Choose a desired voltage range. * For measurements according to IEC61000-4-30 Class S, set the range to “600V”. Selection 600V/1000V * Default setting is highlighted in gray. Move the blue highlight to “V Range”.

  • Page 56: Vt/Ct

    KEW6315 VT/ CT VT/CT* * This setting belongs to Current measurement setting. DANGER ● With attention to the measurement category to which the object under test belongs, do not make measurements on a circuit in which the electrical potential exceeds the following values.
  • Page 57 Settings of voltage measurement KEW6315 ”Nominal voltage” Set the nominal voltage values applied from the measured object. Selection 50V - 600V(100V) * Default value is highlighted in gray. Move the blue highlight to “Nominal V”. Show the value entry window.* * A pop-up appears and show the effective range.

  • Page 58: Settings Of Current Measurement

    Settings of current measurement “Clamp” : Clamp sensors for current measurement Select the model names of the connected sensors. Types of the current sensors used for measurements should be the same. If an optional sensor is used and set for “+Clamp”, an exceptional sensor can be set for 4ch.
  • Page 59 Settings of voltage measurement KEW6315 ”Current range” Choose a desired current range. While “Record” is set at the “Recording Tab” to record the power quality events, “AUTO”* is not selectable. To enable auto-ranging at current range, select “Do not record” for “Event”...

  • Page 60: Settings Of External Input Terminal/ Reference Frequency

    Cancel. ”Frequency” Choose the nominal frequency of the system to be measured. If it is difficult to specify the voltage frequency, for example, in the event of power interruption, KEW6315 performs measurements based on the preset nominal frequency. Selection 50Hz/ 60Hz * Default setting is highlighted in gray.

  • Page 61: Measurement Setting

    5.3 Measurement setting KEW6315 5.3 Measurement setting Press the Key. Change the tabs to “Measurement”. Settings of demand measurement “Measurement cycle” Disable the demand measurement or set the demand measurement cycle in the preset recording period. When a demand measurement start, the measured demand values will be recorded at the selected measurement cycle.
  • Page 62 KEW6315 Settings of demand measurement ”Target value” Set the demand target value. Selection 0.001mW - 999.9TW(100.0kW) * Default setting is highlighted in gray. Move the blue highlight to “Target”. Show the value entry window.* * A pop-up appears and show the effective range.
  • Page 63 Settings of demand measurement KEW6315 ”Inspection cycle” The buzzer sounds when the predicted value exceeds the target value within the selected inspection cycle. The inspection cycle should be shorter than the demand measurement cycle. The relations between the measurement and inspection cycles are as follows.

  • Page 64: Outline Of Demand Measurement Concept

    KEW6315 Outline of demand measurement concept Outline of demand measurement concept In such a contract the electricity tariff rates (i.e. for kWhr units) are based upon the consumer’s maximum power demand. The maximum demand is the maximum of average powers recorded over a 30min interval.

  • Page 65: Settings For Harmonic Analysis

    Settings for Harmonic analysis KEW6315 Settings for Harmonic analysis “THD calculation” THD stands for ”Total Harmonic Distortion”. Select “THD-F” to calculate the total harmonics distortion based on the basic wave and “THD-R” to do the calculation based on all rms values.
  • Page 66 KEW6315 Settings for Harmonic analysis ”Edit allowable range” Set the EMC allowable range (rate of content) for harmonics per order. The edited ranges are displayed as bar graph on the graph of harmonics. Selection Default/ can be customized (V/ A) * Default setting is highlighted in gray.

  • Page 67: Threshold Setting For Power Quality (Event)

    Threshold setting for Power quality (Event) KEW6315 Threshold setting for Power quality (Event) Press the (OFF/ ON) to disable or enable the “threshold value” entry. If “OFF” is selected, the item will not be recorded even the threshold value is set for it. The threshold value used during the previous measurement is displayed by pressing the (ON) key.
  • Page 68 KEW6315 Threshold setting for Power quality (Event) “Transient”: Over-voltage (Impulse) Set an instantaneous voltage value as a threshold for the transient event. The following selection range varies depending on the selected VT ratio. Selection ±50 to ±2200Vpeak against the nominal voltage (300%) * Default setting is highlighted in gray.
  • Page 69 Threshold setting for Power quality (Event) KEW6315 “SWELL”: Instantaneous voltage rise Set the threshold value (rms voltage in one cycle) for swell in percentage of the nominal voltage. The following selection range varies depending on the selected VT ratio. The preset hysteresis has an effect on this threshold value.
  • Page 70 KEW6315 Threshold setting for Power quality (Event) “DIP”: Instantaneous voltage drop Set the threshold value (rms voltage in one cycle) for dip in percentage of the nominal voltage. The following selection range varies depending on the selected VT ratio. The preset hysteresis has an effect on this threshold value.

  • Page 71: Filter Setting For Flicker Measurement

    Filter setting for Flicker measurement KEW6315 Filter setting for Flicker measurement “Filter coefficient” Set a proper filter coefficient according to the nominal voltage for accurate flicker measurements. Select the values of nominal voltage, nominal frequency and filter coefficient values appropriate to the actual measured object.

  • Page 72: Target Power Factor For Capacitance Calculation

    KEW6315 Target power factor for Capacitance calculation Target power factor for Capacitance calculation “Target power factor” Set a target power factor for capacitance calculation. The power factor gets influenced badly if inductive loads, such as motors, are connected to the power supply because current phases lag behind the voltage phases in this case.

  • Page 73: Recording Setting

    5.4 Recording setting KEW6315 5.4 Recording setting Press the Key. Change the tabs to “Recording”. - 71 - KEW6315...

  • Page 74: Settings For Recording Items

    KEW6315 Settings for recording items Settings for recording items The possible recording time on SD cards or the internal memory varies depending on the number of the recorded items and the preset intervals. Select “Do not record” for the items which are not necessary to be recorded to secure a longer recording time.

  • Page 75: Saved Items

    Saved items KEW6315 Saved items The following data measured on each CH will be saved according to the selected recording method. Saved items are depending on the selected recording method and wiring system. Meas./ Rec. setting REC file REC item...

  • Page 76: Recording Method

    KEW6315 Recording method Recording method “Interval” Set the interval to record the measured data on the SD or internal memory. Seventeen different intervals are available, but it cannot be set to a longer time than the demand measurement cycle. The preset recording interval may be changed automatically according to the selected demand measurement cycle.
  • Page 77 Recording method KEW6315 “Start” Select the method to start recording. Selection Manual/ Constant rec./ Time period rec. * Default setting is highlighted in gray. Move the blue highlight to “Start”. Show the pull-down menu. Select a desired recording start method.

  • Page 78: Possible Recording Time

    KEW6315 Possible recording time “Time period recording” Measured data will be recorded at the preset interval for the specified time period of the selected period. When the specified time comes, a recording will start and end automatically; such a recording cycle will be repeated everyday during the specified period.

  • Page 79: Other Settings

    5.5 Other settings KEW6315 5.5 Other settings Press the Key. Change the tabs to “Others”. Settings for system environment “Language” Select the language to be displayed. Selection Japanese/ English * Default setting is highlighted in gray. Changes made by user will remain after system reset.
  • Page 80 KEW6315 Settings for system environment “Date format” Select a desired date display format. The selected date format will be reflected to the date display on the screen and on each setting window. Selection YYYY/ MM/ DD / MM/ DD/ YYYY / DD/ MM/ YYYY * Default setting is highlighted in gray.

  • Page 81: Kew6315 Setting

    KEW6315 Setting KEW6315 KEW6315 Setting “Time” Adjust and set the internal system clock. Selection dd/ mm/ yyyy hh:mm * The selected date format has an effect on this setting. Move the blue highlight to “Time”. Show the value entry window.
  • Page 82 Confirm. Cancel. “Power” Select to enable or disable the auto-power-off function. This setting is for the case KEW6315 operates with an AC power supply. Auto-power-off activates in 5 min after the last operation while KEW6315 is operating with batteries. For:...
  • Page 83 KEW6315 “Backlight” This setting can turn off the backlight automatically when the prescribed time passes after the last key operation. The backlight will be turned off in 2 min after the last operation while KEW6315 is operating with batteries. For:...

  • Page 84: Saved Data

    KEW6315 5.6 Saved data 5.6 Saved data Press the Key. Change the tabs to “Saved data”. Save the “ ”: Measurement data, “ ”: Print screen” and “ ”: Setting data” on the “ ”SD card or in the “...
  • Page 85 To delete, transfer or format the recorded data KEW6315 “Delete data” Show the list of the recorded data, and then select unnecessary data. Icons on the screen means: : SD card, : Internal memory, Measured data, : Print screen, : Setting data Data are not listed in time sequence.
  • Page 86 Number of measurement data files saved in the memory Max number of Measurement data * Max number of files: 3 saved data Settings/ Number of KEW6315 setting and print screen data files * Internal memory Print screen * Max number of files: 8 only “BACK”...
  • Page 87 To delete, transfer or format the recorded data KEW6315 “Transfer data” Select the data you want to transfer from the “ ”: internal memory to the SD card “ ”. Data files which can be transferred are: “ ”: Measurement data, “...
  • Page 88 KEW6315 To delete, transfer or format the recorded data “BACK” To return to the “Saved data” screen, press the Key. “Format” Format the “ ”: SD card or “ ”: Internal memory. Data are not listed in time sequence. The recorded date and time are displayed to the right of file name.

  • Page 89: Type Of The Saved Data

    Dest. code File No. Extension SD:SD card (000-999) (BMP file) ME:Internal memory * Dest. = Destination “KEW6315 Setting” Press the key and move to “Saved data” tab, and then select “Save Settings”. File name: SUP 0000 .PRE Dest. code File No.
  • Page 90 New folder will be created per measurement to save the interval and power quality data. Folder / KEW 0000 name: Dest. code Data No. S:SD card (0000-9999) M:Internal memory “Interval data” KEW6315 setting File name 0000 .KEW Measurement setting 0000 .KEW Power measurement 0000 .KEW Harmonics measurement 0000 .KEW...

  • Page 91: Kew6315 Settings And Data Loading

    KEW6315 settings and Data loading KEW6315 KEW6315 settings and Data loading Select a desired operation. Confirm. “Save settings” Save the “ ”: Setting data on the “ ”: SD card or in the “ ”: internal memory. Data are not listed in time sequence.
  • Page 92 Key to close the information window. Please refer to “Space” (P. 84) for further details. “BACK” To return to the “Saved data” screen, press the Key. The following settings for KEW6315 can be saved. Basic setting Measurement setting Setting item Setting item...
  • Page 93 KEW6315 settings and Data loading KEW6315 “Read settings” Read the “ ”: Setting data from the “ ”: SD card or from the “ ”: internal memory. Data are not listed in time sequence. The recorded date and time are displayed to the right of file name. As for the data which are previously transferred from the internal memory to an SD card, the displayed time means when the data were transferred.

  • Page 94: Chap. 6 Displayed Items

    KEW6315 Instantaneous value “W” Chap. 6 Displayed Items 6.1 Instantaneous value “W” Press the Key. Display the screen for “W”: Instantaneous value. List display of the measured values “List” (/Zoom) e.g.) Instantaneous values measured under 3P3W3A+1A (Three-phase Three-wire + Current...
  • Page 95 List display of the measured values KEW6315 Symbol displayed on the LCD Phase voltage Line voltage Current Active consumption Reactive Lagging Apparent power power power regenerating leading Power Lagging Frequency factor leading Analog input Analog input Voltage at 1ch Voltage at 2ch...
  • Page 96 KEW6315 List display of the measured values “Switching the displayed systems” Press the key and switch the displayed systems. Items displayed in a screen depend on the selected wiring configuration and the number of systems. The dotted lines represent the space of each display area.
  • Page 97 List display of the measured values KEW6315 3P3W3A (Three-phase 3-wire) 3P4W (Three-phase 4-wire) Measured Measured Measured Measured Measured Measured values on values on values on values on values on values on (V12/A1) (V23/A2) (V31/A3) (V1/A1) (V2/A2) (V3/A3) Sum of 1, 2 and 3ch Sum of 1, 2 and 3ch “Switching the type of displayed values”...

  • Page 98: Zoom Display

    KEW6315 Zoom display Zoom display Example: 8-split screen Displayed item Type of value: Inst/ AVG…. Select 4 or 8 values and display the values on one screen. The displayed text will be enlarged so it is easy to see. ”Displayed items”...

  • Page 99: Displaying Trend Graph

    Displaying Trend graph KEW6315 ”Type of value” Any of the following values can be displayed in each column. Inst: Instantaneous value, or AVG: Average value, MAX: Maximum value or MIN: Minimum value within the selected interval. If the selected interval is “1 sec”, Inst, Avg, Max and Min values will be the same since the display update is also “1 sec”.
  • Page 100 KEW6315 Displaying Trend graph The following example shows 1P3W-2 (Single-phase 3-wire, 2-system). ”Change the items displayed on Trend graph” Press the key and change the items displayed on the trend graph. “Σ/CH” Press the (Σ/CH) key to switch the graphs: one is to display the sum and total values per system and another is to display the values per ch.

  • Page 101: Changing Displayed Items And Display Position

    Changing displayed items and display position KEW6315 Changing displayed items and display position Present displayed items After the change The displayed items can be changed to any desired ones. Move the blue highlight to the item you want to change.

  • Page 102: Integration Value "Wh

    KEW6315 6.2 Integration value “Wh” 6.2 Integration value “Wh” Press the Key. Display the screen for “Wh”: Integration value. e.g.) 1P3W-2 (Single-phase Three-wire, 2-system) Elapsed time Σ: Total amount Σ:sum per system Power used in the certain period is displayed as integral power consumption. Integral power consumption is used to calculate electricity tariffs or to control the power consumption.
  • Page 103 6.2 Integration value “Wh” KEW6315 e.g.) 1P3W-2 (Single-phase Three-wire, 2-system) “Change the displayed systems” Press the Key to switch the displayed systems. Please refer to “Setting of wiring system” (P. 49) in this manual. ”Change the displayed chs” Press the Key to switch the displayed channels.

  • Page 104: Demand

    KEW6315 6.3 Demand 6.3 ”Demand” Press the Key. Display the screen for demand value. Change the screens to display the demand measurement results in various forms. Showing the measured values Move the blue highlight to “Meas.”. The demand is the average powers recorded over a certain period. When the estimated value exceeds the target value during demand measurements, the warning buzzer sounds at the inspection cycles.
  • Page 105 Shifts in n specific period KEW6315 hifts in spe ecific perio Items displa ayed on the LCD emaining time Demand interval l is counted dow (time left) Percentage of th he present value e against the targ get value. DEM P...

  • Page 106: Demand Change

    KEW6315 Demand change Demand change Cursor Scroll bar Press the Key to move the cursor and to scroll the graph to right and left. The white bar shows the percentage of hidden pages and the dark orange bar shows the percentage of the present displayed page.

  • Page 107: Vector

    6.4 Vector KEW6315 6.4 Vector Press the Key. e.g.) 3P4W Vector display Measured values V: rms voltage* /Phase angle* A: rms current / Phase angle* For 3P3W3A, rms line voltages are displayed. Phase angled is displayed: using Phase of V1...
  • Page 108 KEW6315 6.4 Vector e.g.) Vector of 3P4W: ”V x desired magnification” : toggle the line lengths of voltage vector. *time(s) ”A x desired magnification” : toggle the line lengths of current vector. *time(s) “Diagram” Press the (Diagram) Key to show the wiring diagram for the selected wiring configuration. Please refer to “Wiring diagram”...

  • Page 109: Waveform

    6.5 Waveform KEW6315 6.5 Waveform Press the Key. e.g.) Waveform of 1P3W-2 (Single-phase 3-wire, 2-system): Measured values V: rms voltage* A: rms current Colored waveforms For 3P3W3A, rms line per ch voltages are displayed. Voltage and current waveforms are displayed: for 10 cycles max. at 50Hz, for 12 cycles max. at 60Hz.

  • Page 110: Harmonics

    KEW6315 6.6 harmonics ”A x desired magnification” : toggle the magnifications of current waveform (vertical). *time(s) ”t x desired magnification” : toggle the magnifications of time axis (horizontal). *time(s) “full scale” : Restore all the changed magnification settings and automatically select the appropriate magnification.
  • Page 111 Display ying harmonics o on the bar graph KEW6315 ar graph display g.) “Linearity” is displayed in “Fu ull-scale”. ate of content Harmonics an nalysis: up to 50 order the above exam mple, “Linear” an d “full-scale” are e selected. In thi...
  • Page 112 KEW63 Displaying h harmonics on th he bar graph g.) 3P4W (Three e-phase 4-wire) : with “LOG” and d “Zoom”. Exceeding the axis value Max value Exceedin ng the threshold Graph color Allowable range Items display yed on the grap Displayed whe en the rate of ha armonics conten...
  • Page 113 Displaying harmonics on the bar graph KEW6315 “Change the displayed chs” Press the Key to change the displayed chs. The details about the relation between the wiring configuration and ch are described in “Settings of wiring system” (P.49). “List”/”Graph” Press the...

  • Page 114: Displaying The List Of Harmonics

    KEW6315 Displaying the list of harmonics Displaying the list of harmonics Press the (List) Key to display the list of harmonics. e.g.) “P: Power harmonics” and “Power” of 1P3W-2 (Single-phase 2-wire, 2-system) are listed. Rms values, rate of content and phase angle of voltage/ current/ power harmonics, from 1...
  • Page 115 Displaying the list of harmonics KEW6315 ”Change the displayed harmonics orders” Press the Key to scroll the page vertically. ”Graph”/ ”List” Press the Key to display voltage/ current/ power harmonics, from 1 to 50 order, in list or graphic form. Only the rate of harmonics content can be checked on graph display screen, ”Rate of content”/”Phase angle”/ RMS value (Power)”...

  • Page 116: Power Quality

    KEW6315 6.7 Power quality 6.7 Power quality Press the Key to display Power quality screen. Factors impair power quality and symptoms Power quality Waveform Symptom Adverse effect Burnout of capacitors and Inverter and Thyristor circuits reactors, buzzes from (phase-control circuit) are used...
  • Page 117 Factors impair power quality and symptoms KEW6315 Power quality Waveform Symptom Adverse effect Damage to a power source Transient, Contact failure at a circuit or reset of the device may Over-voltage breaker, magnet or relay. occur due to a drastic (impulse) voltage fluctuation (spike).

  • Page 118: Displaying Recorded Events

    To record power quality events, short interval is useful in analysis. Occurred time Time and date when KEW6315 detect the start and end of the event. and date Event detection on poly-phase systems.
  • Page 119 Displaying recorded events KEW6315 Measurement of Swell/ Dip/ INT/ Inrush current Each event will be detected with the r.m.s. values in one gapless waveform and with a half-wave over- lapping. The beginning of the waveform where the first event is detected is regarded as the start of the event.
  • Page 120 KEW6315 Displaying recorded events Detection of Transient Voltage waveforms will be monitored at approx 40ksps, gapless, to calculate and check for transient event every 200ms. The beginning of the 200ms period where the first transient is detected is regarded as the start of the event.
  • Page 121 Displaying recorded events KEW6315 ”Change the displayed area” Press the Key to scroll the page vertically. “Flicker” Press the (Flicker) Key to display the recorded flicker values. Details are described in “Displaying measured flicker values in list form” (P. 120).

  • Page 122: Displaying Measured Flicker Values In List Form

    KEW6315 Displaying measured flicker values in list form Displaying measured flicker values in list form Press the (Flicker) Key. Press the Key to change the displays: V: List display/ Pst(1min): Trend graph/ Plt: Transitional change. Time left If variable loads, such as arc furnace, are connected, voltages may vary and cause changes in illumination levels.

  • Page 123: Displaying Trend Graph Of Pst, 1Min

    Displaying trend graph of Pst, 1min KEW6315 Displaying trend graph of Pst, 1min Latest Pst,1min Pst,1min Max values Elapsed time The “Pst, 1min” measured in the recent 120 min is displayed on the trend graph. Items displayed on the LCD...

  • Page 124: Displaying Changes Of Plt

    KEW6315 Displaying changes of Plt Displaying changes of Plt Cursor Scroll bar Press the Key to move the cursor or to scroll the page to right and left. The black bar shows the percentage of hidden pages and the dark orange bar shows the percentage of the present displayed page.

  • Page 125: Chap.7 Other Functions

    “Backlight Auto-off” While KEW6315 is connected to an AC power source: The LCD backlight is turned off automatically 5 min after the last key operation. Press any key except for the Power key to turn on the light again. To disable the Backlight auto-off function, select “Disable auto-off”...
  • Page 126 * Max file size: approx. 77KB “Retain settings” Settings used during the previous test will not be cleared after powering off the instrument. KEW6315 retains and adopts the previous settings. * Default values will be displayed for the first time after purchase.

  • Page 127: Chap.8 Device Connection

    8.1 Data transfer to PC KEW6315 Chap. 8 Device connection 8.1 Data transfer to PC Data in the SD card or the internal memory can be transferred to PC via USB or SD card reader. Transfer to PC via: Card reader SD card data (file) Δ...

  • Page 128: Using Bluetooth ® Function

    KEW6315 8.2 Using Bluetooth® function ® Using Bluetooth function ® Measuring data can be checked on android devices in real-time via Bluetooth communication. It is necessary ® ® to enable Bluetooth function prior to using Bluetooth communication. (Setting No. 26: Bluetooth) ®...
  • Page 129 Connection to input/ output terminals KEW6315 Open the Connector cover. Press the rectangular protrusion above a terminal with a flat-blade screw driver, and insert a signal wire. Remove the driver and fix the wire. Flat-blade screwdriver Signal wire ”Input terminal”...

  • Page 130: Getting Power From Measured Lines

    8.4 Getting power from measured lines If it is difficult to get power from an outlet, KEW6315 operates with power from the measured line by using Power supply adapter MODEL8312 and voltage test leads. DANGER ● When the instrument and the test lead are combined and used together, whichever lower category either of them belongs to will be applied.

  • Page 131: Chap. 9 Pc Software For Setting And Data Analysis

    Data can be expressed in crude oil and CO2 equivalent values in the report. Please refer to the installation manual for “KEW Windows for KEW6315” and install the application and USB driver in your PC.

  • Page 132: Chap.10 Specification

    KEW6315 10.1 Safety requirements Chap. 10 Specification 10.1 Safety requirements Location for use : In door use, Altitude up to 2000m Temperature & humidity range : 23ºC±5ºC, Relative humidity 85% or less (no condensation) (guaranteed accuracy) Operating Temperature & : 0ºC to 45ºC, Relative humidity 85% or less (no condensation) humidity range Storage Temperature &...
  • Page 133 Quick manual ·································································· 1 pce CD-ROM ········································································ 1 pce PC software for setting and data and data analysis (KEW Windows for KEW6315) Instruction manual data (PDF file) Alkaline size AA battery (LR6) ············································ 6 pcs SD card M-8326-02 ························································· 1 pce Carrying case MODEL9125 ···············································...
  • Page 134 KEW6315 10.2 General specification Real-time OS This Product uses the Source Code of T-Kernel under T-License granted by the T-Engine Forum (www.t-engine.org) Portions of this software are copyright (c) 2010 The FreeType Project (www.freetype.org). All rights reserved. External communication function : USB * USB cable length: 2m max.

  • Page 135: Measurement Specification

    10.2 General specification KEW6315 Data storage location : Internal FLASH memory Storage capacity 4MB (Data storage capacity: 3,437,500byte) Max data size 14,623byte/data (max: 234 data) 3P3W-2/1P3W-2 (Power + Harmonics) Max number of saved file 3 * Number of times that you can start a measurement.

  • Page 136: Items Measured At Instantaneous Measurement

    KEW6315 Items measured at Instantaneous measurement Items measured at Instantaneous measurement Frequency f [Hz] Displayed digit 4-digit Accuracy ±2dgt (40.00Hz - 70.00Hz, V1 Range 10% - 110%, sine wave) Display range 10.00 - 99.99Hz Input source (fix) 10-sec average frequency f10 [Hz] Displayed digit 4-digit * e.g.
  • Page 137 R.M.S. Current A [Arms] Range MODEL8128 (50A) :5000m/50.00A/AUTO MODEL8127 (100A) :10.00/100.0A/AUTO MODEL8126 (200A) :20.00/200.0A/AUTO MODEL8125 (500A) :50.00/500.0A/AUTO MODEL8124/KEW8130 (1000A) :100.0/1000A/AUTO MODEL8141/8142/8143 (1A) :500.0mA MODEL8146/8147/8148 (10A) :1000m/10.00A/AUTO KEW8129 (3000A) :300.0/1000/3000A KEW8133 (3000A)　 :300.0/3000A/AUTO Displayed digit 4-digit Effective input 1% - 110% of each Range (rms) and 200% of Range (peak) range Display area 0.15% - 130% of each range (“0”...
  • Page 138 Active power P [W] Range Current Voltage 50.00A 5000mA 100.0A 10.00A 200.0A 20.00A 1000V 50.00k 5000 100.0k 10.00k 200.0k 20.00k 600.0V 30.00k 3000 60.00k 6000 120.0k 12.00k Current Voltage 500.0A 50.00A 1000A 100.0A 10.00A 1000mA 1000V 500.0k 50.00k 1000k 100.0k 10.00k 1000 600.0V...

  • Page 139: 1P2W-1 To

    Items to be calculated KEW6315 Items to be calculated Apparent power S [VA] Range Same as active power. Displayed digit Same as active power. Accuracy ±1dgt against each calculated value (for sum : ±3dgt) Sign No polarity indication Equation ×A when P >S...
  • Page 140 KEW6315 Items to be calculated Power factor: PF Display range -1.000 to 0.000 to 1.000 Accuracy ±1dgt against each calculated value (for sum : ±3dgt) : leading phase － Sign ＋ (no sign) : lagging phase Harmonics reactive power is calculated per ch, and the polarity sign of the reversed basic waveform is displayed.
  • Page 141 Items to be calculated KEW6315 Current unbalance ratio Aunb [%] Displayed digit 5-digit Display range 0.00% to100.00% Wiring 3P3W, 3P4W Equation ⎛ ⎞ β − − ⎜ ⎟ Iumb × β ⎜ ⎟ β − ⎝ ⎠ * The 1st order components of harmonic current are used.

  • Page 142: Items Measured At Integration Measurement

    KEW6315 Items measured at Integration measurement Items measured at Integration measurement Power consumption (if P>0） Active power energy +WP [Wh] Displayed digit 6-digit, Unit: m, k, M, G, T (harmonized with Display area 0.00000mWh - 9999.99TWh (harmonized with * “OL” is displayed when the display area is exceeded.
  • Page 143 Items measured at Integration measurement KEW6315 Reactive power energy +WQ [Varh] Displayed digit 6-digit, Unit: m, k, M, G, T (harmonized with Display area 0.00000mvarh - 9999.99Tvarh (harmonized with * “OL” is displayed when the display area is exceeded. Equation Leading ⎛...
  • Page 144 KEW6315 Items measured at Integration measurement Apparent power energy -WS[VAh] Displayed digit 6-digit, Unit: m, k, M, G, T (harmonized with Display area 0.00000mVAh - 9999.99TVAh (harmonized with * “OL” is displayed when the display area is exceeded. Equation ⎛...

  • Page 145: Items Measured At Demand Measurement

    Items measured at Demand measurement KEW6315 Items measured at Demand measurement Target value (DEM Target Displayed digit 4-digit Unit m, k, M, G, T Display range 0.000mW(VA) - 999.9TW(VA) *according to the selected values Predicted value (DEM Guess Displayed digit...

  • Page 146: 1P3W-1 To 2

    KEW6315 Items measured at Harmonics measurement Items measured at Harmonics measurement Meas. system : Digital PLL synchronization Meas. method : Analyze harmonics, and then add and display the inter-harmonics components adjacent to the integral order of the analyzed harmonics Effective frequency range...
  • Page 147 Items measured at Harmonics measurement KEW6315 R.m.s. harmonics current Ak [Arms] Range Same as r.m.s. current Displayed digit Same as r.m.s. current Same as r.m.s. current Display range * Rate of content: 0.0% - 100.0% (percentages to the basic wave) Complied with IEC61000-4-7, IEC61000-2-4 Meas.
  • Page 148 KEW6315 Items measured at Harmonics measurement Harmonics reactive power Qk [var] (used for internal calculation only) Equation ×A ×A c(10k)r c(10k)i c(10k)i c(10k)r c: Measurement channel: A , k: Harmonics of each order r: Real number after FFT conversion, i: Imaginary number after FFT conversion Measurement cycle in this equation is 10-cycle.
  • Page 149 Items measured at Harmonics measurement KEW6315 Harmonics voltage total distortion factor THDVR [%] Displayed digit 4-digit Display range 0.0% - 100.0% Equation c: Meas. channel ∑ × V: Harmonics voltage THDVR k: Harmonics of each order ∑ 1P2W-1 to 4...
  • Page 150 KEW6315 Items measured at Harmonics measurement Total harmonics current phase angle θAk [deg] Displayed digit 4-digit Display range 0.0º to ±180.0º Equation ⎧ ⎫ c: Measurement channel θA θA θA θA 1k , 2k , 3k , θ − ⎨...

  • Page 151: Items Measured At Power Quality Measurement

    y t i Items measured at Power quality measurement Voltage transient Meas. system Approx. 40.96ksps (every 24μs) gapless event detection (50Hz/60Hz) Displayed digit 4-digit Effective 50V - 2200V (DC) input range Display range 50V - 2200V (DC) Accuracy 0.5%rdg * at 1000V (DC) Input impedance Approx.
  • Page 152 KEW6315 Items measured at Power quality measurement Inrush current Range Same as r.m.s. current Displayed digit Same as r.m.s. current Effective Same as r.m.s. current input range Display range Same as r.m.s. current Crest factor Same as r.m.s. current Input impedance Same as r.m.s.

  • Page 153: Line Voltage

    Items measured at Power quality measurement KEW6315 Flicker Displayed Time left: Counted down time until a Pst calculation completes. items r.m.s. voltage per half-wave, 1 sec average Pst(1min): Flicker value for 1 min (Pst ref. value) Pst: Severity of short term flicker (10 min)

  • Page 154: Specification Of Clamp Sensor

    KEW6315 10.4 Specification of Clamp sensor 10.4 Specification of Clamp sensor <MODEL8128 > <MODEL8127 > <MODEL8126 > AC 5Arms AC 100Arms AC 200Arms Rated current [Max. AC50Arms(70.7Apeak)] (141Apeak) (283Apeak) 0 - 50mV (AC 50mV/AC 5A) AC0 - 500mV AC0 - 500mV Output voltage [Max.AC 500mV/AC50A]:10mV/A...
  • Page 155 10.4 Specification of Clamp sensor KEW6315 <MODEL8125 > <MODEL8124 > Rated current AC 500Arms (707Apeak) AC 1000Arms (1414Apeak) AC0 - 500mV AC0 - 500mV Output voltage (AC500mV/500A):AC 1mV/A (AC500mV/1000A):0.5mV/A Measuring range AC0 - 500Arms AC0 - 1000Arms Accuracy ±0.5%rdg±0.1mV (50/60Hz) ±0.5%rdg±0.2mV (50/60Hz)

  • Page 156: K E W

    c i f ＜KEW8129＞ ＜KEW8130＞ ＜KEW8133＞ 300A Range : AC300Arms (424Apeak) 1000A Range : AC1000Arms (1414Apeak) AC 1000 Arms(1850Apeak) AC 3000 Arms(5515Apeak) 3000A Range : AC3000Arms (4243Apeak) 300A Range : AC0～AC500mV (AC500mV/AC300A) 1.67mV/A AC0～500mV AC0～500mV 1000A Range : AC0～AC500mV (AC500mV/AC1000A) 0.5mV/A (AC500mV/AC1000A)：0.5mV/A (AC500mV/AC3000A)：0.167mV/A 3000A Range :...
  • Page 157 10.4 Specification of Clamp sensor KEW6315 <MODEL8141 > <MODEL8142 > <MODEL8143 > Rated current AC1000mArms Output voltage AC0 - 100mV(AC100mV/AC1000mA) Measuring range AC0 - 1000mArms Accuracy ±1.0%rdg±0.1mV (50/60Hz) (sine wave input) ±2.0%rdg±0.1mV (40Hz - 1kHz) Phase ------------- characteristics Temp. & humidity range (guaranteed 23±5ºC, relative humidity 85% or less (no condensation)
  • Page 158 KEW6315 10.4 Specification of Clamp sensor <KEW8146 > <KEW8147 > <KEW8148 > AC 30Arms (42.4Apeak) AC 70Arms (99.0Apeak) AC 100Arms (141.4Apeak) AC0 - 1500mV(AC50mV/A) AC0 - 3500mV(AC50mV/A) AC0 - 5000mV(AC50mV/A) AC0 - 30Arms AC0 - 70Arms AC0 - 100Arms 0 - 15A...

  • Page 159: General Troubleshooting

    11.1 General troubleshooting KEW6315 Troubleshooting 11.1 General troubleshooting When defect or breakdown of the instrument is suspected, check the following points first. If your problem is not listed in this section, contact your local Kyoritsu distributor. Symptom Check When operating with an AC power supply: Instrument cannot be powered on.

  • Page 160: Error Messages And Actions

    Check the amount of free space in delete unnecessary files, format the card or use another card. The SD card should be formatted on KEW6315, not on the PC. the SD card. See “To delete, transfer or format the recorded data” ( 82).
  • Page 161 See “To delete, transfer or format the recorded data” 82). ● Try again. If still the setting files are not read; * problems with SD card or KEW6315 are suspected, if the setting files are on the SD card, Cannot read the setting file. The file * problems with KEW6315 are suspected, if the setting files may be damaged.
  • Page 162 Out of SD card space. other medias, and then delete files or format. When using another Recording will be stopped. SD card, it should be formatted on KEW6315, not on the PC. See “To delete, transfer or format the recorded data” ( 82).
  • Page 163 DISTORIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations. www.kew-ltd.co.jp 1-19 92-2162C...

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