INSTRUCTION MANUAL DIGITAL POWER METER KEW 6305 Kyoritsu Electrical Instruments Works, Ltd.
● Unpacking procedure We thank you for purchasing our digital Power Meter KEW6305. Please check the contents and instrument before use. ● Items listed below are included with the standard set: 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 Optional parts 10 Clamp sensor Instruction manual for 11 Clamp sensor 12 SD Card 13 Carrying case for Main unit 14 Power supply adapter 1. Main unit 5. Quick 2. Voltage test lead 6.
10. Clamp sensor (depending on model purchased) 50A type (Φ24mm) M-8128 100A type (Φ24mm) M-8127 200A type (Φ40mm) M-8126 500A type (Φ40mm) M-8125 1000A type (Φ68mm) M-8124 3000A type M-8129 (Φ150mm) 13. Carrying case for main unit (with magnet) 11. Instruction manual for Clamp sensor 12. SD Card 2GB M-8326-02 14. Power supply adapter ● Storage Store the items as shown below after use.
● 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. Therefore, read through these operating instructions before using the instrument.
O Measurement Category To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as O to CAT.IV, and called measurement categories. Higher-numbered categories correspond to electrical environments with greater momentary energy, so a measuring instrument designed for CAT.III environments can endure greater momentary energy than one designed for CAT.II. O : Circuits which are not directly connected to the mains power supply. CAT.
DANGER ● Verify proper operation on a known source before use. ● Verify proper operation on a known source before taking action as a result of the indication of the instrument. ● Never make measurement on a circuit in which the electrical potential exceeds 600VAC. ● Do not attempt to make measurement in the presence of flammable gasses. Otherwise, the use of the instrument may cause sparking, which can lead to an explosion. ● Never attempt to use the instrument if its surface or your hand is wet.
WARNING - Connection ● Confirm that the instrument is off, and then connect the Power cord. ● Connect the Power cord, Voltage test leads and Clamp sensors to the instrument first. Cord to be firmly inserted. ● Never attempt to make any measurement if any abnormal conditions, such as a broken cover or exposed metal parts are present on the Instrument, Voltage test leads, Power cord and Clamp sensor.
CAUTION ● Caution should be taken since conductors under test may be hot. ● Never apply currents or voltages exceeding the maximum allowable input for the instrument for a long time. ● Do not apply currents or voltages for the Voltage test leads or Clamp sensors while the instrument is off. ● Don’t use the instrument at dusty places or to be spattered. ● Don’t use the instrument under a strong electric storm or in the vicinity of energized object. ● Never give strong vibrations or drop shocks.
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1. Instrument Overview 1.1 Functional Overview SET UP Make settings for KEW6305 or for measurements. See “Setting (Section 4)” for further details. 1.1 WIRING CHECK Check the connections and display the results. See “Wiring check (Section 10)” for further details.
_W_ Instantaneous value measurement Measure/ display the instantaneous values of current, voltage and electric power. See “Instantaneous value Measurement (Section 6)” for further details. _Wh_ Integration value measurement Display/ record active/ apparent/ reactive energies, and record the average/ max/ min values of measured instantaneous values. See “Integration value Measurement (Section 7)” for further details.
1.2 Features This is a digital Power Clamp Meter that can be used for various wiring systems. Measured data can be saved either in the internal memory or SD card, and can be transmitted to PC via USB connection or by using SD card reader. Safety Construction Designed to meet the international safety standard IEC 61010-1 CAT.III 600V. Wiring configuration KEW6305 supports: Single-phase 2-wire, Single-phase 3-wire, Three-phase 3-wire, Three-phase 4-wire.
1.3 Measuring Procedure ● Steps for measurement Ensuring your safety See “Safety warnings”. Preparation See “Section 3: Getting started”. Basic / Measurement / Save Settings See “Section 4: Setting”. Wiring See “Section 5: Wiring”. * Measuring instantaneous values : “Section 6: Instantaneous value Measurement” * Measuring integration values: “Section 7: Integration value Measurement” * Measuring demand values: “Section 8: Demand Measurement” KEW6305 1.
1.4 Outline of max demand measurement concept In some countries, large consumers of electricity will usually have a maximum demand contract with the power company. Such contract varies from country to country. The following is an explanation of a typical Japanese maximum demand contract. ● Maximum Demand contract In such a contract the electricity tariff rates (i.e. for kWhr units) are based upon the consumer’s maximum power demand.
KEW6305 1.
2. Instrument Layout 2.1 Front view Display (LCD) / Keys Display (LCD) Keys LED status indicator Green lights up : Recording & measuring Green blinks : Stand-by mode (lights up when preset rec. start time comes) Red blinks : Charging batteries 2.
Key functions LED status indicator Green lights up : Recording & measuring Green blinks : Stand-by mode Red lights up : Recording error Function switch: Power on KEW6305. (Rotate to any position other than “OFF”.) Keys KEW6305 Details START/STOP Key Start/ stop integration and demand measurement. Backlight Key Turn on/ off the LCD backlight. Cursor Key On measurement screen: switch screens, and on setting screen: select setting items or change values or digits ENTER Key Confirm entries.
2.2 LCD indications < All symbols to be displayed on the LCD > Voltage range Current range Wiring system Phase number 2.
< Symbols indicate the functions or status during measurement > Symbols Functions and status during measurement Lights up when the keys are locked. Lights up when voltage exceeds a certain condition. Lights up when current exceeds a certain condition. Lights up when instruments is working by AC power supply. Lights up when instruments is working by batteries. Lights up when data hold function is activated. Lights up when selecting SET UP Range. Lights up when selecting WIRING CHECK Range.
2.
2.4 Side face Descriptions < When the Connector cover is closed. > SD Card Cover USB Port Cover < When the Connector cover is opened. > SD Card Slot USB Port KEW6305 2.
3. Getting started 3.1 Power Supply 3.1.1 Battery KEW6305 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. Dry-cell batteries (alkaline) and rechargeable batteries (Ni-MH) can be both used. * Dry-cell batteries (alkaline) are supplied as accessories. DANGER ● Never open the Battery Cover during a measurement.
Power supply indicator Symbol of power supply changes as follows. AC power supply-operated Battery-operated Battery condition Battery symbol varies as follows according to the battery condition. Battery operating time For approx. 15 hours, with new alkaline batteries. * It is reference time and will be shortened if using the backlight or Bluetooth function. (blink) Batteries are exhausted. (Accuracy of readings cannot be guaranteed.
3.1.2 AC Power supply Check the followings before connecting the Power cord. DANGER ● Use only the Power cord supplied with this instrument. ● Connect the Power cord mains plug to a mains socket outlet. The mains supply voltage must not exceed AC240V. (max rated voltage of supplied Power cord MODEL7169 : AC125V) WARNING ● Confirm that the instrument is powered off, and then connect the Power cord. ● Connect the Power cord to the instrument first. Cord to be firmly inserted.
3.2 Voltage test leads and Clamp sensor connection Check the followings before connecting the test leads and sensors. DANGER ● Use only the Voltage test leads supplied with this instrument. ● Use the dedicated Clamp sensor for this instrument, and confirm that the measured current rating of the Clamp sensor is not exceeded. ● Do not connect all the Voltage test leads or Clamp sensors unless required for measuring the parameters desired.
3.3 Start KEW6305 3.3.1 Start-up Screen KEW6305 gets started when rotating and setting the Function switch to any position other than “OFF” position. Then, the Start-up screen will be displayed. 1 All the segments will be displayed for about 1 sec., and then MODEL/VERSION info will be displayed for about 1 sec.. All segments to be displayed 2 3.5 Model name/ Version info. A screen corresponded to the selected range will be displayed.
3.3.2 Error message This instrument automatically checks the internal circuit immediately after it is turned on. When a failure in the internal circuit is suspected, the error screen below will be displayed for about 2 sec. prior to the start-up screen. In case that following screen appears, stop using the instrument immediately and refer to “Section12: When defect or breakdown is suspected” in this manual. Error number (001 - 063） ～ Error No.
4. Setting 4.1 List of setting items This section deals with settings for measurement and data saving. Set the Function switch to SET UP range as follows. Setting no./ item 01 Wiring system 02 03 Voltage range Clamp sensor 04 Current range 05 06 07 08 VT ratio CT ratio Date and time Buzzer Recording interval 09 10 11*1 4.1 Symbol 50A 100A 200A 500A 1000A 3000A - 1/5/10/25/50A/AUTO 2/10/20/50/100A/AUTO 4/20/40/100/200A/AUTO 10/50/100/250/500A/AUTO 20/100/200/500/1000A/AUTO 300/1000/3000A 0.
12*1 Time period setting Date setting 13*2 Start of continuous measurement End of continuous measurement 14*2 15 Target demand Year:Month:Day:Hour:Minute:Second + + Year:Month:Day:Hour:Minute:Second + Year:Month:Day:Hour:Minute:Second Value : 0.1 - 999.9 Unit: W/kW/MW/GW/VA/kVA/MVA/GVA NO/ 10/ 15/ 30 min * Demand measurement will not be performed when “NO” has been selected. 1/2/5 min. when measurement cycle is 10or15 min., 1/2/5/10/15 min. when measurement cycle is 30 min.
4.2 Setting procedure of each setting item “ Setting 01” Wiring system Following explains how to make settings for wiring system. Select the appropriate wiring system according to the environment to be measured.
“Setting 02” Voltage rang Selecting a measurement range so that the estimated inputs will be close to the full scale value is recommended to obtain accurate results. Recommended range selections are: 150V range for rated voltages between 100 - 120V, 300V range for 200 - 240V and 600V range for 400 – 440V. Setting item 150V / 300V / 600V Default value (or after system reset) 300V 1 Use the Cursor key on the selection screen, and select “Setting 02”.
“Setting 03” Clamp sensor Selectable Current range (“Setting 04”) differs by the selected Clamp sensors.
“Setting 04” Current range Selectable Current range differs by clamp sensor selected at “Setting 03”.
“Setting 05” VT ratio For the detailed information about VT ratio, please refer to “5-3 VT/CT ratio” in this manual. Setting range Default value (or after system reset) 0.01 - 9999.99 (can be set by 0.01) 1.00 1 Use the Cursor key on the selection screen, and select “Setting 05”. 2 Press the ENTER key to get the instrument into setting change mode. 3 The rightmost digit of previous setting (or default value: 1.00) blinks.
“Setting 06” CT ratio For the detailed information about CT ratio, please refer to “5-3 VT/CT ratio” in this manual. Setting range 0.01 - 9999.99 (can be set by 0.01) 1.00 Default value (or after system reset) 1 Use the Cursor key on the selection screen, and select “Setting 06”. 2 Press the ENTER key to get the instrument into setting change mode. 3 The rightmost digit of previous setting (or default value: 1.00) blinks.
“Setting 07” Time setting 1 Use the Cursor key on the selection screen, and select “Setting 07”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Then second is forcefully changed to “00” and starts blinking. Select the time parameter to be changed with Left & Right Cursor key and change it with Up & Down Cursor Key. 4 Then press the ENTER key after making necessary change.
“Setting 08” Buzzer setting 1 Use the Cursor key on the selection screen, and select “Setting 08”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Present setting (or default value: on) blinks. Press the Cursor key to select “on” (sound) or “oFF” (not sound), then press the ENTER key after making necessary change.
“Setting 09” Recording interval Following explains how to set the recording interval for integration/ demand measurement. The recording interval is a time distance to record each measurement data into SD Card or internal memory. 1 / 2 / 5 / 10 / 15 / 20 / 30 sec., 1 / 2 / 5 / 10 / 15 / 20 / 30 min., 1 hour Default value (or after system reset) 30 min. Setting time 1 Use the Cursor key on the selection screen, and select “Setting 09”. 2 Press the ENTER key to get the instrument into setting change mode.
“Setting 10” Specific time period rec. or endless rec. 1 Use the Cursor key on the selection screen, and select “Setting 10”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Present setting (or default value: OFF) blinks. Press the Cursor key to select “ON” or “OFF”. ON : Specify the recording start / stop time (repeatedly recorded). OFF : Record the data continuously. 4 Press the ENTER key after making necessary change.
“Setting 11” Time period setting (Time setting) Following explains how to set recording start / stop time. 1 Use the Cursor key on the selection screen, and select “Setting 11”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Then second for recording stop time will blink. 4 Select the time parameter to be changed and change it with Cursor Key. 5 Then press the ENTER key after making necessary change. * Start time is displayed on the upper line and stop time is on the lower line.
“Setting 12” Time period setting (Date setting) Following explains how to set recording start / stop date. 1 Use the Cursor key on the selection screen, and select “Setting 12”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Then day for recording stop date will blink. 4 Press the Cursor Key and select any desired date. 5 Then press the ENTER key after making necessary change. * Start date is displayed on the upper line and stop date is on the lower line.
“Setting 13” Start of continuous measurement 1 Use the Cursor key on the selection screen, and select “Setting 13”. 2 Press the ENTER key to get the instrument into setting change mode. On the LCD, time (Setting. 07);1 min. put forward on, is displayed and second will blink. 3 Change the time and date with Cursor Key. 4 Then press the ENTER key after making necessary change.
“Setting 14” Stop of continuous measurement 1 Use the Cursor key on the selection screen, and select “Setting 14”. 2 Press the ENTER key to get the instrument into setting change mode. On the LCD, measurement start time (Setting 13) + 1 hour, is displayed and second will blink. 3 Change the time and date with Cursor Key. 4 Then press the ENTER key after making necessary change. Example: When start / stop time and date have been set as follows, Setting 13 (start) = 12.08.
“Setting 15” Target demand For details about demand target value, please refer to “Section 8”: Demand measurement. Target value can be selected between 0.1W and 999.9GW. Value Demand target value Default value (or after system reset) Unit 0.1 - 999.9 W / kW / MW / GW (can be set by 0.1) VA / k VA / M VA / G VA 100.0kW 1 Use the Cursor key on the selection screen, and select “Setting 15”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Present setting (or default value: 100.
“Setting 16” Demand measurement cycle Demand measurement cycle is to be used for calculating demand values. Setting time NO / 10 / 15 / 30 min Default value (or after system reset) 30 min * Demand measurement will not be performed when “NO” has been selected. 1 Use the Cursor key on the selection screen, and select “Setting 16”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Present setting (or default value: 30 min.) blinks. Press the Cursor key and set any desired time.
“Setting 17” Demand warning cycle The buzzer will sound when a predicted demand value exceeds a target demand value during demand measurement. For further details, please refer to “Section 8”: Demand measurement. According to the demand measurement interval, which has been set at Setting 16, warning cycle can be set to as follows. Demand measurement cycle “Setting 16” 10 / 15 min. Warning cycle 1 / 2 / 5 min. 1 / 2 / 5 / 10 / 15 30 min. min. Default value (or after system reset) 10 min.
“Setting 18” Available space in SD card Following explains how to check the available space in SD card. 1 Use the Cursor key on the selection screen, and select “Setting 18”. 2 Then the available space in the SD card in KEW6305 will be displayed. (0 – 100%, displayed by 1%) * Bars (“----“) will be displayed if SD card is not inserted. NOTE: When using a 2GB SD card, 511 files (max) can be saved in.
“Setting 19” SD card Format Newly purchased SD Card must be formatted before use. For details about SD Card, please refer to “Section 9: SD Card / Internal memory” in this manual. CAUTION Ensure that the Function switch is set to “OFF” position before placing / removing an SD Card. If an SD Card is placed / removed while the instrument is on, stored data or instrument may be damaged. 1 Confirm the Function switch is at “OFF” position, and then place an SD Card into the SD Card slot of the instrument.
“Setting 20” Available space in Internal memory Following explains how to check the available space in the internal memory. 1 Use the Cursor key on the selection screen, and select “Setting 20”. 2 Then the available space in the internal memory of KEW6305 will be displayed. (0 – 100%, displayed by 25%) NOTE: The max number of files that can be saved in the internal memory is four. If any of file size exceeds 2.25MB, no more file can be saved in the memory. KEW6305 4.
“Setting 21” Internal memory Format 1 Use the Cursor key on the selection screen, and select “Setting 21”. 2 Then press the ENTER key to get the instrument in setting change mode. 3 The message “OFF”(not format) will blink. Change it to “ON”(format) with Cursor key. 4 When pressing the ENTER key, format will start. (Formatting takes a few seconds.) 5 After formatting, a message “FINISH” is displayed on the LCD. NOTE: * All the data in the internal memory will be deleted after formatting. 4.
“Setting 22” System reset Following explains how to perform system reset to restore all the settings to the default. For further details about system reset, please refer to “Section 11: Additional functions” in this manual. 1 Use the Cursor key on the selection screen, and select “Setting 22”. 2 Then press the ENTER key to get the instrument in setting change mode. 3 The message “OFF”(not reset) will blink. Change it to “ON”(reset) with Cursor key. 4 When pressing the ENTER key, system reset will start.
“Setting 23” ID number Setting range Default value (or after system reset) 00-001 - 99-999 00 - 001 1 Use the Cursor key on the selection screen, and select “Setting 23”. 2 Press the ENTER key to get the instrument into setting change mode. 3 The rightmost digit of present setting (or default value: 1.00) blinks. Change number with the Cursor key, and then press the ENTER key after making necessary change. Function of Cursor keys: To select the digit subject to change.
“Setting 24” Setting read Following explains how to load the settings saved at “Setting 25”. Please refer to “Setting 25” in which shows how to save the setting. 1 Use the Cursor key on the selection screen, and select “Setting 24”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Chose the Setting save number from 01 to 20 with the Cursor key, and then press the ENTER key after making necessary change.
“Setting 25” Setting save Following explains how to save the settings items. Seven items below can be saved. Making necessary settings on following 7 items, and saving them. Then it can be loaded from Setting 24 from the next time. Selectable number: 01 - 20 Setting no.
“Setting 26” Bluetooth 1 Use the Cursor key on the selection screen, and select “Setting 26”. 2 Press the ENTER key to get the instrument into setting change mode. 3 Present setting (or default value: OFF) blinks. Press the Cursor key to select “ON” or “OFF”, and then press the ENTER key after making necessary change. NOTE: z To conserve battery life, it is recommended to turn off the Bluetooth function when you are not using it. z The LED (blue) lights up when “ON” is selected. KEW6305 4.
“Setting 27” V / A range Auto-setting Following explains how to activate auto-setting for Voltage range (Setting 02), Clamp meter (Setting 03), Current range (Setting 04). 1 Select the appropriate wiring configuration at Setting 01. 2 Connect the instrument to the circuit under test. 3 Use the Cursor key on the selection screen, and select “Setting 27”. 4 Press the ENTER key to get the instrument into setting change mode. 5 Press the Cursor key to select “ON”, and then press the ENTER key.
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5. Wiring configurations 5.1 Important Preliminary checks DANGER ● Do not make measurements on a circuit in which the electrical potential exceeds AC600V. ● Connect the Power cord to a socket outlet. Never connect it to the socket outlet of AC240V or more. ● The Clamp sensor, Voltage test leads and Power cord are to be connected to the instrument first. ● The Voltage test leads or Clamp sensors should not be connected to the input terminals of the instrument if not required for measurement.
5.2 Basic wiring configurations ● Wiring method for single-phase 2-wire (1ch) “1P2W (1ch)” L Source Load N VN V1 A1 ● Wiring method for single-phase 2-wire (2ch) “1P2W (2ch)” L Source Load１ N Load２ VN V1 A1 A2 ● Wiring method for single-phase 2-wire (3ch) “1P2W (3ch)” L Source Load１ N Load２ Load 3 VN KEW6305 V1 A1 A2 A3 5.
● Wiring method for single-phase 3-wire “1P3W” L1 Source Load N L2 VN V1 V2 A1 A2 ● Wiring method for three-phase 3-wire “3P3W” L1 Source Load L2 L3 VN V1 V2 A1 A2 ● Wiring method for three-phase 3-wire “3P3W3A” L1 Source Load L2 L3 VN V1 V2 V3 A1 A2 A3 ● Wiring method for three-phase 4-wire “3P4W” L1 Source Load L2 L3 N VN 5.
5.3 Using supplementary VT/ CT’s (not supplied with the instrument) DANGER ● Never make measurement on a circuit in which electrical potential exceeds AC600V. ● Connect the Power cord to a socket outlet. Never connect it to the socket outlet of AC240V or more. ● This instrument must be used on the secondary side of VT(transformer) and CT(current transformer).
5.4 Wiring check This instrument has Wiring check function to check the connections in order to prevent incorrect connections. 5.4.1 Check procedure 1 Rotate the Function switch to “WIRING CHECK” position. (Ensure that necessary Voltage test leads/ Clamp sensors are connected to the instrument/ circuit under test.) 2 Press the ENTER Key. (Check will start.) 3 Check result will be displayed about 5 sec. later. Top: Frequency f Middle: Voltage Bottom: Current A _ Everything is OK._ 5.5 _ Error is found.
Move the cursor on the line showing an error, and press the ENTER Key. Then the suspected error value will be displayed on the LCD. In this case, orientation of sensor (A3) may be incorrect. 5.4.2 Displayed contents Selectable display screens at WIRING CHECK range are as follows. Press the Cursor keys to switch following screens.
5.4.3 Criteria of judgment System to be checked Check item Criteria of Judgment Error 3P3W3 3P4W 3P3W 1P3W 1P2W-31P2W-21P2W-1 message A Frequency Voltage input Should be 45Hz or more. Should be 65Hz or less. Should be 60% or more of (V range x VT ratio). Should be 110% or less of (V range x VT ratio). Voltage balance Voltage phase Should be within ±10º of reference phase. Should within ±20% against V1. Current Should be 10% or more of (A range input x CT ratio). Err.Lo_Hz f Err.
5.4.
6. Instantaneous value measurement Set the Function switch to W range.
● Prior to making a measurement Ensuring your safety Turning on the instrument Basic settings Wiring See “Safety warnings”. See “Section 3: Preparation for measurement”. See “Section 4: Settings”. See “Section 5: Wiring”. Instantaneous value measurement ● Basic settings “Setting 01” “Setting 02” “Setting 03” “Setting 04” “Setting 05” “Setting 06” KEW6305 Wiring Voltage range Current range Clamp sensor VT ratio (if necessary) CT ratio (if necessary) 6.
● Keys Key Description START/STOP key No use BACKLIGHT key Switches on/off the backlight of the LCD. UP cursor key Changes the display contents. Selects the row to be changed while in custom display mode. DOWN cursor key LEFT cursor key RIGHT cursor key Changes the display contents. Selects the parameter (V, A etc.) to be displayed while in custom display mode ENTER key Selects/ Enters custom display mode. Confirms the deletion of a file in the internal memory.
6.1 Wiring Configuration display screen The start-up screens (or the screen after system reset) corresponding to each wiring configuration are listed below. When turning the Function switch from “OFF” to W range, the following measurement screen appears. e.g. Three-phase 4-wire (Screen 1-A) Screen 1-A (*) Screen A Screen 1 Upper Middle Lower Upper : V V A P Middle : A Lower : P * For further details about Screen 1-A, refer to “6-2 Switching the display screen” in this manual.
● Single-phase 3-wire “1P3W”, Three-phase 3-wire “3P3W” (13 screens) Screen A Screen B Screen C Screen D Screen E Screen F Screen G Screen 1 Upper Middle Lower Screen 2 Upper Middle Lower Screen 3 Upper Middle Lower V A P P S PF V1 V2 － V1 A1 P1 P1 S1 PF1 A1 A2 － V2 A2 P2 P2 S2 PF2 P1 P2 － － － － － － － － － PF1 PF2 － S1 S2 － Q1 Q2 － f － － ● Single-phase 2-wire (3ch) “1P2W (3ch)”(15 screens) Screen A Screen B Screen C Screen D Screen E Screen F Screen G Screen 1 Upper Middle Lower Screen
6.2 Selecting/changing the display screen The display screens are classified as follows. Following table is also used in section “6-3 Customizing the display”.
● Selecting display screens Screen3-A Screen 1-D Screen 1-A Screen 1-B Screen 1-C Screen 1-D Screen 1-A Screen 2-D Screen 2-A Screen 2-B Screen 2-C Screen 2-D Screen 2-A Screen 3-G Screen 3-A Screen 3-B Screen 3-G Screen 3-A Screen 3-C ••• Screen 3-F Screen 1-A 6.
● Display examples The following are examples of displays with three-phase 4-wire configuration. _１-Ａ_ _１-Ｂ_ _１-Ｃ_ 1ch 2ch _２-Ａ_ _２-Ｂ_ _２-Ｃ_ _３-Ａ_ _３-Ｂ_ _３-Ｃ_ V A V A P P S PF KEW6305 P 6.
6.3 Customizing the display The displayed parameters in the upper/middle/lower rows of Screen 1 and 2 can be customized. Screen 3 cannot be customized.
● Customizing 1 Press the ENTER key either on Screen 1 or 2, to enter into custom display mode. 2Parameter displayed in upper row {eg. initial value: Screen1/ V(Voltage), Screen 2/P(Active power) } will flicker. 3 Select the row to be customized using the UP or DOWN cursor key and the parameter to be selected with LEFT or RIGHT cursor key. 4 When customizing other rows, select the row and parameters in same way. 5 Select any parameter you want to display it at each row, and press the ENTER key.
6.4 Saving data (instantaneous values) Pressing the SAVE key on W range during a measurement saves all the measured parameters at the instant of saving. This is a manual single step operation. Data can be saved to either below two locations: * SD card : Max. 511 files can be saved. * Internal memory : Max. 4 files can be saved. Data is saved to a SD card automatically when a SD card has been inserted. If a SD card has not been inserted, data is automatically saved to internal memory. 6.4.
Each time the SAVE key is pressed; the measured data is saved in the same file. To save the data into an other file (only when SD card is used), press the SAVEkey again on W range. Then repeat the saving procedure. NOTE * When the Function switch is set to OFF position before closing a file, the file remains open and is not saved. Be sure to set it to any position other than OFF and W , thus closing the file. * If the SAVE key is pressed continuously (2 times or more in 1sec.
6-4-3 Parameters recorded ● Parameters saved (depending on each wiring configuration) Following parameters are saved.
● Example After downloading the file (SD card or internal memory), if the file is opened with a spreadsheet application software( using KEW format, eg Microsoft Excel), the spreadsheet will be as follows: FILE ID 6305 model”6305” VERSION 1_01 Software version SERIAL NUMBER 01234567 s/n MAC ADDRESS 00_11_22_33_44_55 Bleutooth address ID NUMBER 00-001 Setting 23 CONDITION ---- No WIRING 3P4W Setting 01 VOLT RANGE 300V Setting 02 VT RATIO 1.
6-5 Ranges and Over-range indication 6-5-1 Ranges The settings determine the range for each measurement parameter, namely: Voltage range (“Setting 02”), Current range (“Setting04), VT ratio (“Setting 05”) and CT ratio (“Setting 06”). (Fixed range) ● Voltage V: V(average of each phase), V1/V2/V3 (each phase), max 4 digits 150 / 300 / 600V range Voltage range x VT ratio x 120% Digit & Decimal point position 0.3600 - 0.9999 V 0.9999 V 1.000 - 9.999 V 9.999 V 10.00 - 99.99 V 99.99 V 100.0 - 999.9 V 999.
● Active power P/ Reactive power Q/ Apparent power S : P1 / P2 / P3, Q1 / Q2 / Q3, S1 / S2 / S3 , max 4 digits : P, Q, S (total), max 5 digits Power (*) x VT ratio x CT ratio x 120% Digit & Decimal point position 0.0030 ～ 0.0099 W / Var / VA 0.0099 W / Var / VA 0.0100 - 0.0999 W / Var / VA 0.0999 W / Var / VA 0.1000 - 0.9999 W / Var / VA 0.9999 W / Var / VA 1.000 - 9.999 W / Var / VA 9.999 W / Var / VA 10.00 - 99.99 W / Var / VA 99.99 W / Var / VA 100.0 - 999.9 W / Var / VA 999.
6-5-2 Over-range indication/ Bar indication WARNING ● When the over-range indication appears on the maximum chosen range, this means that the input exceeds the maximum allowable input for the instrument. Never apply such an input to the instrument. ● When a measured value exceeds the maximum allowable input, the use of VT/CT’s is recommended. Refer to “5-3 VT/ CT” and follow the instruction manual. CAUTION ● When over-range indication appears on the screen, calculations are still performed.
● Bar indication The calculations and measurements performed by this instrument are based on the voltage and frequency of V1. If the value of V1 is less than 5% of the chosen range or if the frequency is not within 20 - 70Hz, all the parameters (except for current ) cannot be computed and thus displayed. In such a case, the numerical digits will be replaced by a bar indication (“- - - -”) as shown: NOTE: * or mark is displayed every measurement screen while a measurement is performed on Wh or DEMAND range.
7. Integration value measurement Set the Function switch to Wh range. LED status indicator If the Function switch is set to the any other position during integration measurement or stand-by mode, the following happens; W range : Confirms instantaneous values. (see “Section 6: Instantaneous value measurement”) DEMAND range: No effect SET UP range: Confirms the settings.
● Prior to making a measurement Ensuring your safety Turning on the instrument See “Safety warnings”. See “Section 3: Preparation for measurement”. Basic setting See “Section 4: Setting”. Wiring See “Section 5: Wiring”. Confirm the instantaneous value Setting for integration measurement See “Section 6: Instantaneous value measurement”. See “Section 4: Setting”.
● Keys Key Description START/STOP key Pressing this key starts/stops integration measurement manually or automatically. BACKLIGHT key Switches on / off the backlight of the LCD. UP cursor key Changes the display contents. DOWN cursor key LEFT cursor key Changes the display contents. RIGHT cursor key ENTER key Resets the integration value. Confirms the deletion of a file in the internal memory. ESC key Resets the integration value. Holds the indicated value on the LCD.
7-1 Survey initiation There are two ways of starting a survey. (1) Manual operation Pressing START/STOP key on Wh range for 2 sec. or more starts measurement. (2) Automatic operation (presetting the time and date) Set the start time and date on the SET UP range (“Setting 10”), and then press START/STOP key on Wh range. The instrument goes into stand-by mode, and the measurement starts at the preset time and date. ● Manual measurement 1 Press the START/STOP key on Wh range for 2 secs. or more.
● Automatic measurement at a preset time and date 1 Preset the start time and date on SET UP range. 2 Set the Function switch to Wh range, and press the START/STOP key. 3 The file number screen is displayed for about 1 sec. (a file is opened), followed by the measurement screen. The instrument goes into stand-by mode. LED status indicator flicker while the instrument is in stand-by mode. File number screen (displayed for about 1 sec.
7.2 Survey closure There are two ways of closing a survey. (1) Manual operation Pressing START/STOP key on Wh range for 2 sec. or more closes the survey. This action also closes a survey started automatically at a preset time and date. LED status indicator goes off. The survey is then closed. (2) Automatic operation (presetting the time and date) This can be done by presetting the stop time and date on SET UP range. LED status indicator goes off. The survey is then closed.
7-4 Changing displays Displays can be changed as follows with the Cursor keys. The parameters displayed vary depending on each wiring configuration chosen. Each calculated parameter, although not displayed on the screen, is actually being computed. ● Changing the display (Three-phase 4-wire configuration) Upper：TIME Screen1 Middle：WP Lower：WS Upper：TIME Screen2 Middle：WP1 Lower：WS1 Screen3 Upper：TIME Middle：WP2 Lower：WS2 Screen4 Upper：TIME Middle：WP3 Lower：WS3 7.
● Indications on each wiring configuration The following messages are displayed on the screen according to each wiring configuration.
NOTE * Never set the Function switch to OFF position during a survey otherwise the survey may be lost. * The file number becomes “001” when; (1) when the file number has exceeded 999 (2) after system reset * If the same file no. exists, the old one will be overwritten. 7.5.2 Limitations of saving ● Limitation of saving (before starting a survey) In the following cases, a survey cannot be started (manually or automatically) by pressing the START/STOP key.
7.5.
● File format and name Measured data is saved in KEW format, and the file name is assigned automatically. File name ：5 O – Fixed no. 0 0 1 . KEW File no. (001 – 999) SD: SD card ME: Internal memory 1: Manual saving 2: Auto-saving (using Timer function) 7.
● Example of measured data FILE ID 6305 Model”6305” VERSION 1_01 Software version SERIAL NUMBER 01234567 s/n MAC ADDRESS 00_11_22_33_44_55 Bluetooth address ID NUMBER 00-001 Setting 23 CONDITION SELF No WIRING 3P4W Setting 01 VOLT RANGE 300V Setting 02 VT RATIO 1.00 Setting 05 SENSOR TYPE 8125 Setting 03 CURRENT RANGE 500A Setting 04 CT RATIO 1.00 Setting 06 INTERVAL '30M Setting 09 START yyy/mm/dd hh:mm:ss Setting 11 or 13 DEMAND TARGET 100.
7.6 Displayed Digits/ Over-range indication ● Digits * Active electrical energy WP, Apparent electrical energy WS (auto-range) : WP1/WP2/WP3, WS1/WS2/WS3 (each phase), max 6 digits : WP, WS (total), max 6 digits The range is automatically assigned depending on the measured value. The decimal point and unit are changed automatically. Unit: Wh/ VAh When the value exceeds 999999G, segment becomes “ “. However the saved data is not lost. 0.0000 100.000 1000.00 10.0000 k 100.000 k 1000.00 k 10000.
KEW6305 7.
8. Demand value measurement Set the Function switch to DEMAND range. LED status indicator If the Function switch is set in the following positions during Demand measurement or Demand stand-by mode; W range : The instantaneous values are displayed. (see “Section 6: Instantaneous value measurement”) Wh range : The instantaneous values are displayed. (see “Section 7: Integration value measurement”) SET UP range : The settings are displayed.
● Before making a measurement Ensuring your safety Turning on the instrument See “Safety warnings”. See “Section 3: Preparation for measurement”. Basic setting See “Section 4: Setting”. Wiring See “Section 5: Wiring”. Confirm the instantaneous value See “Section 6: Instantaneous value measurement”. Setting for demand measurement See “Section 4: Setting”. Demand value measurement ● Settings only for demand measurement Basic setting and following settings are required for demand measurement.
● Keys Key Description START/STOP key Pressing this key starts/stops demand measurement manually or automatically. BACKLIGHT key Switches on/off the backlight of the LCD. UP cursor key DOWN cursor key LEFT cursor key RIGHT cursor key Changes the display contents. Changes the display contents. ENTER key Resets the demand value. Confirms the deletion of a file in the internal memory. ESC key Resets the demand value. Holds the indicated values on the LCD.
8-1 Demand measurement The following is an example of power management by monitoring the demand. ● Reducing the average power during a specific interval Assume the interval to be 30mins. In the figure below, the average power during Interval 1 is assumed to be 500kW and during Interval 2 is assumed to be 600kW. (kW) 600kW 500kW 500kW Average power 500kW 0 600kW 15 Average power 600kW 30 Interval 1 15 30(min.) Interval 2 Now, assume that the average power during the first 15 min.
● Demand measurement with this instrument By measuring loads, the KEW6305 can display the present and predicted average power(demand value). These values are continuously updated as time elapses during a particular interval. The buzzer will sound when a predicted demand value exceeds a target demand value after the elapse of the preset inspection cycle. The value which is displayed at the end of an interval (in this case, 30 min.) is the average power (Demand value) for the interval.
● Saving Demand values Demand values will be saved at the preset interval (Setting 09). Final demand value is determined at the end of every demand measurement cycle (Setting 16), and will be reset automatically. The maximum demand value measured during every demand cycle will be held and displayed on the LCD together with the time and date information.
8-2 Changing displayed items There are 3 display screens on DEMAND range, and the screens are common to each wiring configuration. ● Screens can be changed with Cursor keys as follows. Screen 1 Upper row: Target demand value Middle row: Predicted demand value Lower row: Present demand value Screen 2 Upper row: Remaining time for demand interval elapse Middle row: Load factor Lower row: Present demand value Screen 3 Upper row: Date when the max.
● Displayed items It is set at “Setting 15”. Set the desired value. Predicted values of average electrical power (demand values) which will be after the elapse of demand measurement interval with present loads are displayed right after starting a measurement. The predicted values are calculated successively when loads vary.
8-3 Survey initiation There are two methods to start a survey. (1) Manual operation Pressing the START/STOP key on DEMAND range for at least 2 sec. starts measurement. (2) Automatic operation (preset time and date) Set the start time and date on SET UP range, and then press the START/STOP key on DEMAND range. The instrument goes into stand-by mode, and the measurement starts at the preset time and date. ● To start measurement manually 1 Press the START/STOP key on DEMAND range at least 2 sec.
● To start measurement automatically at the preset time and date 1 Set the start time and date on SET UP range. 2 Then set the Function switch to DEMAND range, and press the START/STOP key. 3 File number screen is displayed for about 1 sec., followed by the measurement screen. The instrument goes into stand-by mode for measurement. LED status indicator while the instrument is in stand-by mode. File number screen (displayed for about 1 sec.
8-4 Survey closure There are two methods for closing a survey. (1) Manual operation Pressing START/STOP key on DEMAND range for at least 2 sec. stops measurement. This action also stops the measurement started automatically at a preset date and time. (2) Automatic operation (specifying the time and date) Preset the stop time and date on SET UP range . ● To stop measurement manually * Pressing START/STOP key on DEMAND range for at least 2 sec. stops the measurement.
8-6 Saving data When integration or demand measurement starts, the measured data will be saved automatically. There are two locations where data can be saved. * SD card : Max. 511 files can be saved. * Internal memory : Max. 4 files can be saved. Data is saved to a SD card automatically when a SD card has been inserted before turning on the instrument. If the SD card has not been inserted, data is saved automatically to the internal memory 8.6.
8.6.2 Limitation of saving ● Limitation of saving (before starting a survey) In the following cases, a survey cannot be started (manually or automatically) by pressing the START/STOP key. < In case data is saved to SD card > * When 511 files have been saved to the SD card; saved. mark appears and further data cannot be Some files can to be deleted via the PC, otherwise all the saved files in the SD card can be deleted using “Setting 19” of Section 4 in this manual.
8-6-3 Parameters recorded ● Parameters to be saved Voltage (RMS) Current (RMS) Active power Reactive power Apparent power Power factor Frequency Active energy (consumption) (regenerating) (overall) Apparent energy (consumption) (regenerating) (overall) Reactive energy Vi Vi max Vi min Vi avg Ai Ai max Ai min Ai avg P P max P min P avg Q Q max Q min Q avg S S max S min S avg PF PF max PF min PF avg f f max f min f avg +WP +WPi -WP -WPi #WP #WPi +WS +WSi -WS -WSi #WS #WSi Parameters to be saved : volt
● Example of measured data FILE ID 6305 Model”6305” VERSION 1_01 Software version SERIAL NUMBER 01234567 s/n MAC ADDRESS 00_11_22_33_44_55 Bluetooth address ID NUMBER 00-001 Setting 23 CONDITION SELF No WIRING 3P4W Setting 01 VOLT RANGE 300V Setting 02 VT RATIO 1.00 Setting 05 SENSOR TYPE 8125 Setting 03 CURRENT RANGE 500A Setting 04 CT RATIO 1.00 Setting 06 INTERVAL '30M Setting 09 START yyy/mm/dd hh:mm:ss Setting 11 or 13 DEMAND TARGET 100.
8-7 Displayed Digits/ Over-range indication ●Digits *Predicted demand value (Guess), Present demand value (Present): max 6 digits The digits of the predicted and present demand values are corresponding to the target demand values listed in the table below. Target demand value (“Setting 16”) 0.1～999.9 W／VA Digit and decimal point 0.0～99999.9 W／VA 0.1～999.9 kW／kVA 0.0～99999.9 kW／kVA 0.1～999.9 MW／MVA 0.0～99999.9 MW／MVA 0.1～999.9 GW／GVA 0.0～99999.9 GW／GVA * Load factor (%):max 6 digits 9999.
9. SD card/ Internal memory 9-1 Instrument and SD Card/ Internal memory This instrument supports 1/ 2Gbyte SD cards. ● Max number of saved data Destination to save data SD card Internal memory Capacity 1GB 2GB 3MB Manual saving ( W ) approx. 3.3 million results approx. 6.7 million results approx. 10,000 results 1 sec approx. 8 days approx. 17 days approx. 33 min. 1 min approx. 16 months approx. 33 months approx. 33 hours Auto-saving at preset interval 30 min 3 years or more approx.
Data transfer 1. SD card and USB Data in SD card or internal memory can be transferred to PC using USB connection or SD card slot/ reader. Method of transfer SD card data (file) Internal memory data (file) USB Card reader 9 *1 9 9 -------- *1: It is reccomended to transfer the data with big size by use of SD card since trasfer of such data via USB takes time. (transfer time : approx 320MB/ hour) * As to the manipulation of SD cards, please refer to the instruction manual attached to the card.
9.2 Placing / removing SD card △DANGER ● Do not open the SD card Cover during a measurement. △WARNING ● Ensure that Voltage test leads and Clamp sensors are removed from the instrument, and that the Function switch is set at the “OFF” position when placing/ removing SD card. △CAUTION ● Ensure that the Function switch is set at the “OFF” position when placing/ removing SD card. Otherwise, the stored data may be lost or the instrument may be damaged.
KEW6305 9.
10. Communication function/ Interface software 1. Introduction ● Interface This instrument is equipped with USB and Bluetooth interfaces. Communication method : USB Ver2.0 Bluetooth : Bluetooth Ver2.1+EDR (Class2) Compliant profile: SPP Following can be done by USB/ Bluetooth communication.
2. Installing the “KEW Windows for KEW6305” (1) Followings shall be checked before installing the software. * To prepare your system to install this software, please close all open programs. * Be sure NOT to connect the instrument with a USB until installation completes. * Installation shall be done with Administrative right. (2) Insert the CD-ROM in your PC's CD-ROM Drive. Click the “Run KEWSetupLauncher2.exe” when the “AutoPlay” pop-up window appears on Windows Vista or Windows 7.
(6) Click “Finish” when “InstallShield Wizard Complete” dialogue box appears. (7) When above installation wizard completes, subsequent installation initiates automatically. If you rebooted your PC at step (5), double click CD drive at My computer to show the following window. (8) Repeat above step (3) through (6) and completes the installation.
3. Installing the USB driver How to install the USB driver (for Windows 7/ Vista) (1) When the KEW Windows for KEW6305 has been successfully installed in your computer, following dialogue box appears to start installing the USB driver. Click “Next”. (2) Read through and understand the End User License Agreement and click“ I accept….”, and then click“ Next”. KEW6305 10.
(3) If the Security Warning message appears, click on the “Install this driver anyway”. (It is no problem to continue installing because operation has already been verified.) (4) Installation completes when the following window appears. Click “Finish”. The USB driver been successfully installed. Power on KEW6305 first, and then connect to you PC. To restart the interrupted USB driver installation process, right click on the CD drive and click “Open”. Click and start “kewusb100_setup.
How to install the USB driver (for Windows XP) (1) When the KEW Windows for KEW6305 has been successfully installed in your computer, following dialogue box appears to start installing the USB driver. Click “Next”. (2) Read through and understand the End User License Agreement and click“ I accept….”, and then click“ Next”. (3) If the Warning message appears, click “Continue Anyway”. (It is no problem to continue installing because operation has already been verified.
click “Next”. (7) If the Warning message appears, click “Continue Anyway”. (It is no problem to continue installing because operation has already been verified.) (8) When the installation completes, the Completing the Found New Hardware Wizard screen appears. Click “Finish”. To restart the interrupted USB driver installation process, right click on the CD drive and click “Open”. Click and start “kewusb100_setup.exe” in the “DRIVER” folder. 10.
4. Starting the “KEW Windows for KEW6305” Click the “KEW WindowsV2“ icon on your desktop, or click “Start”-> “Program”-> “KEW”-> “KEW WindowsV2”. Ensure that KEW6305 gets started before connecting KEW6305 to your PC. Then start KEW WindowsV2. The main window for “KEW WindowsV2” appears. Select “KEW6305” and click “Start” or double click on the “KEW6305” to get the KEW6305 started. Click “Close” or close button (x) on the right-top to end the program.
11. Other functions 11.1 Getting power from measured lines When there is difficulties in getting power from an outlet, KEW6305 operates with powers on the measured line by using Voltage test leads with Power supply adapter MODEL8312. Connect the Adapter according to following procedure. 1 2 3 4 5 6 Confirm that the Adapter is off. Connect the Plug of the Adapter to VN and V1 terminals on KEW6305 and Power Plug to the Power connector respectively.
11.2 Auto-ranging Auto-ranging function is available at W, Wh, DEMAND and WAVE Ranges. Current values in wide range can be measured with this function; it is helpful when load capacitances vary dramatically according to day and time. ●Range: 2-range-auto/ max and min range of each Clamp sensor ●Range shift to upper one when crest values equal to twice as much as F.S (sine wave) at min range is detected. Accurate values may not be obtained when substantial fluctuations in 1 sec. 11.
12. Troubleshooting When defect or breakdown of the instrument is suspected, check the following points first. If your problem isn’t listed in this section, contact your local Kyoritsu distributor. Symptom (1) Instrument cannot be powered on.
Symptom (6) Data cannot be saved in a CF card. Check ● CF card is inserted correctly? ● CF card has been formatted? ● Is there available space in a CF card? ● Destination for saving data is set to “CF card”? ● Check the max number of files or capacity of CF card. ● Confirm that the operation of CF card to be used is checked. ● Verify the proper operation of CF card on other hardware. (7) Download and setting cannot be done via USB communication.
13.Specification 13.1 General specification Location for use Temperature & humidity range (guaranteed accuracy) Operating Temperature & humidity range Storage Temperature & humidity range Measured line Insulation resistance Indication renewal Applicable standards Dimension Weight Accessories Optional parts 13.
13.2 Inst measurement ( W Range) (1) Voltage V(i) [V] Range 150/ 300/ 600V Displayed digit 4 digits Allowable input 10 to 110% of each range Display range 5 to 130% of each range Crest factor 2.5 or less Accuracy ±0.2%rdg±0.2%f.s. (sine wave, 45 - 65Hz) Input impedance approx. 8.
(5) Calculation items Apparent power S [VA] Displayed digit Same as active power. Equation 1P2W ×1 ×2 ×3 1P3W 3P3W 3P3W3A 3P4W S =V × A S _ i = V 1× Ai(i = 1,2) ， S = S _ 1 + S _ 2 S _ i = V 1× Ai(i = 1,2,3) ， S = S _ 1 + S _ 2 + S _ 3 Si = Vi × Ai(i = 1,2) ， S = S1 + S 2 Si = Vi × Ai(i = 1,2) ， S = 3 (S1 + S 2 ) 2 Si = Vi × Ai (i = 1,2,3) ， S = S1 + S 2 + S 3 Si = Vi × Ai (i = 1,2,3) ， S = S1 + S 2 + S 3 Reactive power Q [Var Displayed digit Same as active power.
Neutral current In [A] *only when “WIRING = 3P4W” An = A1 + A2 cosθ 2+ A3 cosθ 3 Calculation *θ2 ： Phase difference between A1and A2 *θ3 ： Phase difference between A1and A3 13.3 Integration measurement ( Wh Range) Active energy WP [Wh] Displayed item Consumption (Overall: + WP , each phase: + WPi ) Display range 0.00Wh to 999999GWh (digit and unit will be adjusted according to Equation Consumption Each phase: (+WP) Overall: Regeneration Each phase: (-WP) Overall: + WS .
Duration of integration Displayed item 00:00:00 (hour: minute: second) Display range 00:00:00 (0 sec.) - 99:59:59 to 000100 - 999999 (99-hour 59-min 59-sec) (999999-hour) *Display changes as above. 13.4 Demand measurement ( DEMAND Range) (1) Target value (TDEM) Display range Preset value will be displayed and not vary. (0.1W - 999.9GW) (2) Predicted value (GDEM) Display range Decimal position and unit are the same as TDEM. 0 to 999999dgt (“OL” will be displayed if exceeding this range.
(4) Battery check function Power supply Mark Battery voltage [V] (±0.1V) AC power supply － Effective DC power supply (battery) ～ 10.5 ～ 5.5V range ( blink) Warning 5.5V or less * KEW6305 operates with an AC power supply if it is connected to.
13.6 Specification of Clamp sensor Rated current Output voltage < MODEL8128 > < MODEL8127 > < MODEL8126 > AC 5Arms (max rating: AC50Armns) AC 100Arms (141Apeak) AC 200Arms (283Apeak) 0 ~ 50Arms (AC 50mV/AC 5A) (AC 500mV/AC50A) AC0 ~ 500mV (AC500mV/AC100A) : 5mV/A AC0 ~ 500mV (AC 500mV/AC200A) : 2.5mV/A AC0 ~ 50Arms(70.7Apeak) AC0 ~ 100A AC0 ~ 200A Measuring range Accuracy (sine input) Phase characteristics Temp. & humidity range (guaranteed accuracy) Operating temp. range Storage temp.
< MODEL8125 > < MODEL8124 > < KEW8129 > AC 500Arms (707Apeak) AC 1000Arms (1414Apeak) AC 300/1000/3000 Arms AC0 ~ 500mV (AC500mV/500A) : AC 1mV/A AC0 ~ 500mV (AC500mV/1000A) : 0.5mV/A AC0 ~ 500Arms AC0 ~ 1000Arms ±0.5%rdg±0.1mV (50/60Hz) ±1.0%rdg±0.2mV (40Hz ~ 1kHz) ±0.5%rdg±0.2mV (50/60Hz) ±1.5%rdg±0.4mV (40Hz ~ 1kHz) within ±1.0° (5 ~ 500A/ 45 ~ 65Hz) within ±1.0° (10 ~ 1000A/ 45 ~ 65Hz) 300A Range : AC500mV/AC300A(1.67mV/A) 1000A Range : AC500mV/AC1000A(0.
DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations.
