Instruction Manual
Contents
1. 5000V range 5000 s 4000 5 3000 gt 2500V range 8 g 2000 1000 1000V range 500V range 0 250V range 0 1 1 10 100 1000 0 100 1000 MQ MQ MQ MQ MQ GQ GQ GQ Insulation Resistance for 10sec after a start of test 6 10 Use of Guard terminal When measuring the insulation resistance of a cable leakage current flowing on the surface of cable jacket and the current flowing inside the insulator are mixed and may cause error in insulation resistance value In order to prevent such error wind a conductive wire around the point where leakage current flows Then connect it to the Guard terminal as shown in the figure on the next page This is to move out the surface leakage resistance of the cable insulation to measure only the volume resistance of insulator Make sure to use the Guard cord supplied with this instrument to connect the instrument to Guard terminal Conductor Power supply Leakage current Insulation G d Protective wire 2 ividicater Insulation resistance tester 6 11 Filter function KEW3127 has Filter function Filter Mode is effective to reduce the variations in readings due to external influences during high resistance measurements The filter type is Low pass filter with cut off frequency of 0 3Hz Press the FILTER button to enable the Filter function The Filter mark then appears on the LCD To check sudden variations in res2. 27 6 7 DD Measurement Dielectric Discharge iii mi ime m mimea 28 6 8 Ramp Measurement mimi mim l mzimu znz eee e een eee 30 6 9 Voltage characteristics of measuring terminal 222222222222 teres 32 6 10 Use of Guard terminal scr c ttt tte 32 6 11 Filter function src ttt ttt nen eee eee ee 33 6 12 Backlight function sot t ttn eee eee eee 33 6 13 Auto power off function imei mmi manna 33 Memory function 00 mm il ee 34 7 1 Function details cc ctr c rt ttt teen eee 34 7 2 Howto save data ccc t ttt ttt tte eee ee eee eee eee ees 35 7 3 How to recall saved data crt ct ttt ttre eee 36 7 4 How to delete data 37 8 Clock Setting 38 9 Communication Function Software 39 9 1 KEW3127 Settings 39 9 2 How to install the Software ccrctt rt ttt mmama 42 9 3 How to start KEW Windows for KEW3127 12000 be meme meme 45 9 4 Features of KEW Smart ccc tt crc t ttre 47 10 Battery Charging and Replacement 48 10 1 How to charge battery WA WAA 48 10 2 How to replace battery IA KA EIA 49 11 Accessories ttt eee 51 11 1 Metal part for Line Probe and replacement rssrrrsers 51 11 2 How to use the adaptor for recorder mimi mimi mimi mi meme 52 11 3 Line probe with alligator clip
3. 52 12 Disposing the Product 53 1 Safety warnings This instrument has been designed manufactured and tested according to IEC 61010 Safety reguirements for Electronic measuring apparatus and delivered in the best condition after passed the inspection This instruction manual contains warnings and safety rules which must be observed by the user to ensure safe operation of the instrument and retain it in safe condition Therefore read through these operating instructions before using the instrument A WARNING Read through and understand instructions contained in this manual before starting to use the instrument Save and keep the manual at hand to enable quick reference whenever necessary The instrument is to be used only in its intended applications Understand and follow all safety instructions contained in the manual It is essential that the above instructions are adhered to Failure to follow the above instructions may cause injury instrument damage and or damage to equipment under test The symbol A indicated on the instrument means that the user must refer to related parts in the manual for safe operation of the instrument It is essential to read the instructions wherever the A symbol appears in the manual A DANGER is reserved for conditions and actions that are likely to cause serious or fatal injury A WARNING is reserved for conditions and action
4. To check the insulation of electric eguipments or electric circuits measure their insulation resistances by using this instrument Ensure to check the appropriate voltages to be applied to the equipment under test before starting a measurement Note KEW3127 may show unstable readings when the insulation resistance of the equipment under test is not stable Beep sound may be heard during insulation resistance measurement But it is not malfunction lt takes time to measure a capacitive load At insulation resistance measurement positive voltage is outputted from the Earth terminal and negative voltage is outputted from the Line terminal Connect the Earth cord to the Earth ground terminal It is recommended to connect the positive pole to the earth side when measuring insulation resistance against the ground or when a part of the equipment under test is earthed With this connection smaller measured value can be obtained comparing with other way round 1 Check the appropriate voltages to be applied to the circuit under test and set the Range switch to any desired insulation resistance range 2 Press the MODE button wre and select any of the following modes Mode Details IR pvoar Performs normal insulation resistance measurements consistent measurements Auto measurement and display of PI and DAR SV Increases the set voltage by 20 every time when pre set time comes DD Calculates
5. 30 1200V 30 3000V 30 6000V 10 rdg 20V range resolution 10V This monitor is used to check whether electrical charge stored on the equipment under test is discharged or not The measured voltage value displayed on the LCD is a reference value Please be noted that the indicated value when external AC voltage is applied to the instrument is not the correct value lt Volt meter gt Measuring range Resolution Accuracy Volt DC voltage 30 600V AC voltage 30 600V 1V 2 rdg 3dgt 50 60Hz Frequency 45 0 65 0Hz 1 0 1Hz 0 2Hz 1 When the measured voltage is less than 30V or DCV is measured the frequency is displayed as Hz on the LCD lt Ammeter Output Current gt Measuring range Accuracy 0 00nA 5 50mA 10 rdg 1 1 If result of resistance measurement is 10MQ or more output current is determined by resistance and voltage Accuracy is derived from measured resistance specification and measured voltage specification lt Capacity meter gt Rated voltage Measuring range Accuracy a V range OnF 50 0 uF vene _ S O0nF 250uF ssrhrdgtSdat Calculated Value PI DAR DD Measurement Mode Display range Computational error Pl 0 00 9 99 2dgt DAR 0 00 9 99 2dgt DD 0 00 9 99 2dgt 7 Display Low battery warning Overrange indication Auto ranging Au
6. Do the same to set minute and press Minute Hour O the ENTER button rer 5 Now clock setting completes 4 Clock setting Power off the instrument is finished 9 Communication Function Software 9 1 KEW3127 Settings The PC software application enables analysis of the saved data from PC KEW3127 has following two kinds of communication methods 1 Bluetooth 2 MODEL8212USB Following can be done via PC communication use software KEW Windows for KEW3127 Downloading a file in the internal memory of the instrument to a PC Making settings for the instrument via PC Displaying the measured results as a graph and saving them in realtime Communications with a PC cannot be established while operating KEW3127 e g while setting measurement time output voltage or saving data When the instrument is out of the range of Bluetooth or MODEL8212 USB is disconnected and the data download is failed power off the instrument and on again and retry the download Instrument setting Follow the procedure below and select the communication method on KEW3127 before starting PC communication 1 Power off state 1 Hold down the ENTER button and power on the instrument II Power on 2 LCDshows BTon Use the UP DOWN button 2I157 and select a desirable 2 ehg communication method and press the 5 ENTER button r bt on Selecting Bluetooth set to bt on bE la 3 Setting is
7. 1 Stand by state mr o Data save in the MEMORY mode shall HULU be done after finishing a measurement 3000 8 108m while the result is being displayed on the LCD Ja zi 2 Press the MEMORY button 3 Selecteither MEMORY or LOGGING m f with the UP DOWN button 4 Blink 4 Press the ENTER button When selecting When selecting LOGGING MEMORY 5 Saving completes and back to stand by state 5 Stand by state 3400 108 DBs 6 Press the TEST button 7 Measurement and logging start LOGGING mark appears 7 3 How to recall saved data Follow the procedures below to recall the saved data Pressing the ESC button 9 during operation returns to the previous screen 1 Stand by state 3000 i08 IBO JIL 1s or longer iia 2 Press the MEMORY button for 1 sec or longer 3 Selecteither MEMORY or LOGGING with the UP DOWN button AN Blink iji m mo a 4 Press the ENTER button mtb LA Memory oT 5 Select a memory number with the UP No DOWN button 2157 Litgy mA 6 Press the ENTER button mL 00 WA es 7 Saved data will be displayed If the recalled data is logging data the latest data will be displayed Press the UP DOWN button A 7 to switch the display of current value and capacitance value 7 4 How to delete data Follow the procedures below to delet
8. Power Adapter from the instrument before replacing battery After replacing batteries make sure to tighten up the screw for battery compartment cover A WARNING Always use 12V5Ah Lead acid battery PXL12050 or equivalent A CAUTION Install battery with correct polarity Followings may cause battery liquid leak heating explosion or damage to Case resulting injury short circuiting the positive and negative terminals putting close to fire or disassembly or modification 1 Set the Range switch to OFF position and remove the test leads and power adapter from the instrument 2 Unscrew and slide to remove the battery compartment cover on the side face of the instrument Match the arrow mark on the battery compartment cover with the engraved OPEN on the instrument case Attention should be paid not to lose screws CLOSE Ls co OPEN 3 Pull up the battery as below and disconnect the red and black cables Pull the positive and negative connectors upwards and disconnect them from the battery Pull the connector upwards 4 Replace the old battery with the new one lead storage battery PKL 12050 12V5Ah Ensure that the connectors are properly attached and the metal terminals of battery are not deformed and then install the battery observing the correct polarities oo 5 Slide and attach the battery compartment cover and
9. appears Click Data Download or Instrument Setting Kikyorirsu aa wanaona Receive deta in real time display Aas graph and save it 9 4 Features of KEW Smart Remote checking of measurements is possible without accessing KEW3127 using the special Android application KEW Smart The application KEW Smart is available on download site for free An Internet access is required Please note that communication charge is incurred separately for downloading applications and using special features of them For your information KEW Smart is provided on line only Main features Checking of measurement Measurements can be displayed in graphic or numeric forms on Android devices in real time Checking of KEW3127 setting Settings of KEW3127 can be checked Saving measured results Results can be converted and saved in PDF Transmitting measurement data Saved data can be transmitted to a PC Details can be found in the HELP for KEW Smart Cautions Battery level of KEW3127 is not shown on Android devices Ensure that the battery level of KEW3127 is sufficient before starting to perform measurements using these features Charge battery if necessary Remote control such as switching ranges of KEW3127 from Android devices is not possible 10 Battery Charging and Replacement 10 1 How to charge battery A DANGER Use only the Power adapter supplied with this instrument Connect the Power adap
10. measure currents up to 2mA 11 3 Line probe with alligator clip optional accessory 1 MODEL7168A Line probe with alligator clip N O ie 2 MODEL7253 Long Line probe with alligator clip 15m 12 Disposing the Product Waste Electrical and Electronic Eguipment WEEE Directive 2002 96 EC This Product complies with the WEEE Directive 2002 96 EC marking requirement The affixed product label see below indicates that you must not discard this electrical electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE directive Annex 1 this product is classified as a Monitoring and Control instrumentation product Disposing lead storage batteries When you throw away the batteries be sure to cover their positive and negative terminals and always observe local laws and regulations Insufficient insulation of the terminals may cause explosion or fire because electrical energies remain in lead storage batteries after use MEMO MEMO DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations KYORITSU ELECTRICAL INSTRUMENTS gt WORKS LTD 2 5 20 Nakane Meguro ku Tokyo 152 0031 Japan Phone 81 3 3723 0131 Fax 81 3 3723 0152 Factory Ehime Japan www kew ltd co jp 13 07 92 2156
11. recommended to charge the battery with reference to 10 1 How to charge battery described in the manual before stating to use with the instrument since the battery voltage may be low due to self discharge 5 1 Checking the battery voltage 1 Set the Range switch to any position other than OFF 2 When the battery mark shown at the upper left on the LCD is last 1 level 1 the batteries are almost exhausted Charge battery to perform further measurements The instrument operates properly even in such a low battery power condition and it may not affect the accuracy When battery mark is empty the battery voltage is below the lower limit of the operating voltage In such a condition the accuracy isn t guaranteed Refer to 10 1 How to charge battery and charge battery 5 2 Connecting test leads Insert the test lead firmly to the connector terminal on the instrument Connect the Line Probe red to the Line terminal the Earth Cord black to the Earth terminal and the Guard Cord green to the Guard terminal To establish guard is not necessary you do not have to connect the Guard cord A DANGER Do not press the TEST button when the Range switch is at any position other than OFF High voltages are applied to the test leads and you may get electrical shocks 6 Measurement 6 1 Mains disconnection check Voltage measurement A DANGER Do not make measurement on a circuit in which the elect
12. tighten it with screw Ensure that the arrow mark on the battery compartment cover matches with the CLOSE mark on the instrument case CLOSE uN OPEN 11 Accessories 11 1 Metal parts for Line Probe and replacement A DANGER In the electrical environment of CAT II or higher MODEL8255 should be attached and used with the test lead With the large exposed metal parts of MODEL8254 and 8019 the equipment under test may be shorted It may result in failure of the equipment under test and cause fire or lead to fatal or serious injury 1 Tip metal parts MODEL8255 Standard Prod straight type with molded parts MODEL8254 Straight Type Prod MODEL8019 Pickel Type Prod To be used to hook the instrument 2 How to replace it Turn the Line probe counterclockwise to remove the attached tip metal Put the tip metal you want to use to the hexagon socket and turn it to clockwise together with the tip of probe and tight up screws MODEL8255 jah Hexagon Socket Male Screw MODEL8254 baa 11 2 How to use the adaptor for recorder MODEL8302 is the adaptor for recorder option for output current measurement Connect it as shown in the below figure Output is DC1mA when current of 1 u A is flowing To recorder To shield or Earth IKYORITSU ZIKYORITS S model 6302 1mV 14A Kikvoritsu MODEL8302 can
13. 5 Hard case Measurement CAT IV 600V Pollution degree2 Measuring range and accuracy Temperature humidity 23 5C 45 75 RH lt Insulation resistance tester gt Rated A voltage 250V 1 500V 1000V 2500V 5000V Accuracy 0 0 99 9MQ 0 0 99 9MQ 0 0 99 9Mo _ 020 99 9Ma STATA 100 999M0 100 999M0 45 rdg fete 100 999M Q 1 00 9 99G Q 1 00 9 99GQ 3dgt peal 1 00 1 996 2 19 0 99 96 10 0 99 96Q range 2 00 9 99G Q 100 999MQ 1 00 9 99GQ 100 999G Q 1 00 9 9960 10 0 99 969 10 0 99 960 100 89962 1 no g9TQ 20 rdg 100 199GQ Display range 0 0M 12 00GQ 0 0M 120 0GQ 0 0M 240GQ 0 0M 1200G 0 0M 12 00TQ Open circuit DC 250V DC 500V DC 1000V DC 2500V DC 5000V voltage 10 10 20 10 20 0 20 0 20 0 Rated mA or more 1mAor more 1mA or more current 1 2mA or less 1 2mA or less 1 2mA or less at IMO load at 2 5MQ load at 5M Q load Short circuit For 10 sec after a test is started max 5mA current after that 1 4mA 1 250V Range is for IRevoak measurement only 2 Measuring range goes to one lower range when the applied input drops to 80 or lower of the rating of the lower range Measurement accuracy to be applied is changed when the range goes to the lower range 6 lt Voltage monitor for insulation resistance range gt Rated voltage 250V 500V 1000V 2500V 5000V Accuracy Measuring 30 330V 30 650V
14. Bad 6 5 2DAR Dielectric Absorption Ratio DAR measurement is almost same to PI measurement in a sense that they test the time course of insulation The only difference is that DAR measurement can get result faster than the other Insulation resistance 1 min after a start of test DAR Insulation resistance ji 15 or 30 sec min after a start of test DAR 1 4 or more 1 25 1 0 1 0 or less Criteria Best Good Bad Note1 DAR time is selectable 15 or 30 sec How to select Keep the MODE button m pressed down and rotate the Range switch to power on KEW3127 DAR mark starts blinking 2 Press the UP DOWN button AW to switch 15 sec and 30 sec displayed at the lower left on the LCD Select the desirable one 3 Press the ENTER button em and confirm the selection Selected DAR time is saved and kept after the instrument is powered off To check the time currently selected follow the step described as above 6 5 3 How to measure DAR PI DAR and PI are measured automatically at continuous measurement of Revoar mode Set the Range switch to any range and measure the test object continuously 1 min after a start of continuous measurement LCD shows DAR value 10 min after a start of continuous measurement LCD shows PI value When DAR PI values are displayed as DAR and PI values are determined by the methods 1 and 2 as described above
15. INSTRUCTION MANUAL Kikyorirsu oS EE 23 20 gt a Obe Tin wile a 1 Di 50 r aa a D c gt Ez 5 m r PRESS TO TEST N am HIGH VOLTAGE INSULATION TESTER KEW 3127 sio SEHA va KYORITSU ELECTRICAL J INSTRUMENTS WORKS LTD PON gt 5 6 7 Contents Safety warnings 1 Feature 5 Specification 6 Instrument layout 10 4 1 Instrument layout niu aca IA a a a 10 4 2 LGD display 11 4 3 Opening and closing Hard case ttt t ttt ttt ttt tet e mnanaa 12 4 4 Taking out KEW3127 from the Hard case s r rrrrrrt meme me 12 Preparation for measurement ccc t ttc ee 13 5 1 Checking the battery voltage 13 5 2 Connecting testleads ccc ct ttt teen nunu na nanenane 13 Measurement iii imei eee 14 6 1 Mains disconnection check Voltage measurement 2 meme 14 6 2 Insulation resistance measurement iii ttt ttt tert 15 6 3 About BREAKDOWN mode and BURN mode 555sssssrrrsrresens 19 6 4 Continuous measurement 000000000000 eee ee 20 6 5 IRevoar Measurement ccc t ttt ttre eee enna 21 6 6 SV Measurement Step Voltage
16. bration Do not try to replace the battery if the surface of the instrument is wet Firmly insert the plug into the terminal when using test leads Ensure that the instrument is powered off when opening the battery compartment cover for battery replacement A CAUTION Always make sure to set the Range switch to the appropriate position before making a measurement Set the Range Switch to OFF position after use and disconnect the test leads from the instrument Remove the battery if the instrument is to be stored and will not be used for a long period Do not expose the instrument to the direct sun high temperature and humidity or dewfall Use a cloth dipped in alcohol for cleaning the test leads and the part around the measuring terminals Do not store the instrument if it is wet The Voltage warning mark is being displayed during a measurement and it flashes when voltages 30V DC AC or more exist on the circuit under test Symbols Danger of possible electric shock Instrument with double or reinforced insulation DC AC Earth terminal Crossed out wheel bin symbol according to WEEE Directive 2002 96 EC indicating that this electrical product may not be treated as household waste but that it must be collected and treated separately red Ee O Measurement categories Over voltage categories To ensure safe operation of measuring instruments IEC 61010 es
17. ck the circuit under test again and turn off the circuit breaker 6 2 Insulation resistance measurement A DANGER Confirm that no electrical charge exists on the circuit under test before measuring by using a high voltage detector Put on a pair of insulated gloves for high voltage In case the Range switch is set to Insulation resistance range high voltage is being applied to the tips of test leads and to the circuit under test continuously while the Test button is kept pressed down Be extremely careful not to get electric shock Do not start measurement with the battery cover removed Never start measurement when thunder rumbling Connect the Earth Cord black to the earth terminal of the circuit under test When any mode other than VOLT mode is selected live circuit warning symbol appears on the LCD and the audible warning activates when a voltage of 30V or higher is measured KEW3127 doesn t start a test even the Test button is pressed down if the measuring voltage is 160V or higher it starts a test if the measuring voltage is under 160V upon a press of the Test button Prior to testing ensure that the equipment under test is disconnected from the mains supply and not energized in order to avoid possible electrical hazards This instrument may start a measurement for energized electrical circuits Be extremely careful not to get electrical shock
18. dielectric discharge based on the measured capacitance of the measured object and residual current values after testing RAMP Increases the preset voltage gradually to detect insulation failures 3 Connect the Earth cord black to the Earth terminal of the circuit under test 4 Put the tip of the Line probe red to the circuit under test Then press the Test button The buzzer sounds intermittently during measurement when a range other than 500V 250V range is selected 5 The measured value will be displayed on the LCD and it remains displayed on the LCD after a measurement A CAUTION Turn off the breaker of the circuit under test 6 This instrument has Auto discharge function Keep the test leads connected to the circuit under test and release the Test button when measurements end The auto discharge function operates to discharge the electrical charges on the circuit under test Confirm that the voltage monitor shows OV A DANGER Do not touch the circuit under test immediately after testing Capacitance stored in the circuit may cause electric shock Leave test leads connected to the circuit and never touch the circuit until the discharge completes Auto discharge function This is a function to discharge capacitance stored in the circuit under test automatically after testing Discharge condition can be checked on the voltage monitor This function will be canceled when removing the test
19. e the saved data Pressing the ESC button 9 during operation returns to the previous screen Recall and display the data which one wishes to delete See clause 7 3 How to recall the saved data yanu Ww TI as 1 Recall and display the saved data IU LI 390p ID Dhat iji eso 18 oF longer 2 Press the ESC button for 1 sec or longer LTT C 3 Confirmation screen is displayed LIL L i 4 Press the ENTER button to delete the data m LI I 5 Return to Memory No selection screen 8 Clock Setting Follow the procedures below and adjust the internal clock of KEW3127 To confirm the clock time use the PC application KEW Windows or repeat the following steps Power off state 1 Hold down the ESC button and power on the instrument Hl E Power on 1 Adjust year 2 At the lower left on the LCD Y starts blinking Adjust the year with the UP DOWN button 4 7 and then press the ENTER button rn 2 Adjust Month amp day 3 Then M D starts blinking Adjust the month with the UP DOWN button A J and then press the ENTER button cen Likewise adjust day with the UP DOWN button AJ and then press the ENTER button amr Month JL 3 Adjust Hour amp Minute 4 The last parameter h m starts blinking Adjust hour with the UP Ymon Blink DOWN button A and then PTT press the ENTER button ame ew
20. eement I do not accept the terms in the icense agreement Instalishield Enter the user information and specify the location to where install the software Then click Next Confirm the information on install and click Install to start installing Ready to Instali the Program The wizard is ready to begin installation An installation of KEW Windows for KEW3127 is followed by the installation of KEW Windows a KEW Windows for KEW3127 InstallShield Wizard Welcome to the InstallShield Wizard for KEW Windows for KEW3127 The InstaliShield R Wizard will install KEW Windows for KEW3127 on your computer To continue dick Next WARNING This program is protected by copyright law and international treaties To install the KEW Windows for KEW3127 you can follow the same installation procedure described for KEW Windows If you need to remove this software use the Add Remove Programs tool in the Control Panel 9 3 How to start KEW Windows for KEW3127 Start and Quit Start the software by 1 clicking the icon for KEW Windows on the desktop or 2 clicking Start gt Program gt KEW KEW Windows Then the KEW products which have been installed in the KEW Windows are listed up Select the KEW3127 on the list and then click Next Then a main menu for KEW Windows for KEW3127
21. finished Selecting MODEL8212USB set to bt off a g bE oFF When KEW3127 communicates via Bluetooth Bluetooth mark 8 is displayed on the LCD When KEW3127 communicates via MODEL8212USB USB mark G33 is displayed on the LCD Using optional MODEL 8212 USB 1 Connect MODEL 8212 USB to the USB port on a PC Refer to the instruction manual for MODEL 8212 USB and install the special driver 2 Connect MODEL 8212 USB and KEW3127 as illustrated below Further instructions for use are in the HELP for KEW Windows for 3127 Kikyoritsu Connect MODEL 8212 USB here After connecting MODEL 8212 USB side view Interface 1 Bluetooth Bluetooth Ver2 1 EDR Class2 Compliant profile SPP 2 MODEL8212USB Communication method USB Ver1 1 Software KEW Windows for KEW3127 Download this software from our homepage Refer to 9 2 How to install the Software System Requirements OS Operation System Windows7 VISTA XP_ CPU Pentium 4 1 6GHz or more Memory 512Mbyte or more for Windows XP 1Gbyte or more for Windows 7 Vista Display 1024 x 768 dots 65536 colors or more HDD Hard disk space required 1Gbyte or more including Framework NET Framework 3 5 or later Trademarks Windows is a registered trademark of Microsoft in the United States Pentium is a registered trademark of Intel in the United States Bluetooth is a registe
22. istances ensure that the Filter mode is turned off 6 12 Backlight function This function to facilitate working at dimly illuminated location or at nighttime work The backlight doesn t work when the Range switch is set to OFF It automatically turns off 1 min after the last key operation this feature is disabled while a measurement is processed 6 13 Auto power off function The instrument automatically turns off approx 10 min after the last switch operation To restore from the auto power off status set the Range switch to OFF position once and then set it to any desirable range 7 Memory Function 7 1 Function Details Measurement data of insulation resistance can be saved in the internal memory of KEW3127 Following data can be saved 1 LOGGING Measuring data is saved every second 2 MEMORY Data is saved at the end of measurement 1 Max number of file 1 LOGGING Max 10 files Up to 100min in total Max recording time per file 90min 2 MEMORY Max 32 files 2 Parameters to be saved Following parameters will be saved common for LOGGING and MEMORY 1 In all modes Saved time amp date measured values resistance current voltage capacitance 2 Revoar mode PI DAR value DD mode DD value Ramp mode Breakdown voltage 7 2 How to save data Follow the procedures below to save the measured data Pressing the ESC button EX during operation returns to the previous screen w S a a HH Aa
23. items for IRpipar are as follows Measurement duration Measurement automatically stops when the preset time period passes Output voltage For 2500V 5000V Range voltage value is adjustable to 20 of rated voltage can be set by 5 For 500V 250V Range either 500V or 250V is selectable Breakdown Burn Either Breakdown or Burn mode is selectable For 250V Burn mode only 2 Setting procedures Follow the procedures below Stand by state J ENTER button as Setting of Measurement duration with UP DOWN button 4 7 4 ENTER button amea Setting of Output voltage 1 with UP DOWN button 2IF7 J ENTER button ama Setting of Breakdown Burn with UP DOWN button A 7 ENTER button ama Setting is finished 1 500V 2500V 5000V Range only 6 5 1 PI Polarization index This is to check a temporal increase of leakage currents flowing on insulations and to confirm leakage currents aren t increased as time passes PI is usually determined by the insulation resistances measured 1 min and 10 min after a measurement is started PI is dependent on the shape of insulations and influenced by moisture absorption therefore a check of PI is important to diagnosis the insulation of cables Insulation resistance 10 min after a start of test Pl Insulation resistance 1 min after a start of test Pl 4 or more 4 2 2 0 1 0 1 0 or less Criteria Best Good Warning
24. l 14 Communication port for MODEL8212USB 15 Shutter 16 Power adapter terminal 17 Earth cord black 18 Guard cord green 19 Line probe red 20 Power adapter 0 0 OPTICAL ADAPTER e e_ ADAPTER 4 2 LCD display 1 10 2 Tii Nea RS 7 Oe 15 i TAA A BBB 16 mm i nnn 5 ____ gy miei A 47 6 ee EICILI LS wmo STEP STOP sv 0D CPL DAR 8 S889 all 59652 BBB 5 l N as 1 Battery mark 2 Overheat warning mark 3 AC DC mark 4 LOGGING mark 5 MEMORY mark 6 FILTER mark 7 Date and time mark 8 Time 9 DAR PI DD Break down Frequency value 10 Voltage warning mark 11 Bar graph 12 MODE mark 13 USB mark for MODEL8212USB 14 Bluetooth mark 15 Output voltage 16 Insulation resistance 17 Unit 18 Capacitance Output current value 4 3 Opening and closing Hard case The Latching device has two features the larger portion which is the latch itself and the small latch release tab at the bottom of the latch 1 To open pull up the latch release tab 2 in the direction of the arrow 2 To close lower the latch and press until it snaps Never press the latch release tab 2 to close the latch as damage may result 4 4 Taking out KEW3127 from the Hard case Grip the handles and pull upward to take out KEW3127 from the Hard case Ra N Kaa 3 i ma La N 5 Preparation for measurement It is
25. leads 2 sec or more before discharge completes 7 Set the Range switch to OFF position and remove test leads from the instrument Note The voltage warning mark stays on during a measurement and it blinks when voltages of AC DC 30V or higher exist on the circuit under test When measuring low resistances if currents larger than the rated current are output over a long period of time KEW3127 consumes large power and will overheat When this happens further tests are automatically inhibited and the over temperature symbol WA appears on the display The instrument must then be left cool down Testing shall be resumed when WA symbol disappears Short circuit currents at a start of measurement may get lower when the Pa symbol appears Depending on the ambient temperature or measured resistances the EF symbol may appear and interrupt a PI measurement Principle of Insulation Resistance Measurement Resistance value can be obtained by applying a certain high voltage to the resistance insulation resistance and measuring the flowing current Resistance value Voltage Current RX V I LINE VOLTAGE V RESISTANCE VALUE RX CURRENT EARTH 6 3 About BREAKDOWN mode and BURN mode Either Breakdown mode or Burn mode can be set for each measurement IRpv dar SV DD RAMP 1 Breakdown mode When applied voltage decreases drastically due to breakdown or current sudden increase caused by insulatio
26. lows For SV measurement 250V cannot be set at 500V 250V Range Step time Measurement duration per step Breakdown Burn Either Breakdown or Burn mode is selectable During test Output current Setting procedures Follow the procedures below Stand by state J ENTER button ama Setting of Step time with UP DOWN button 2 7J ENTER button swen Setting of Breakdown Burn with UP DOWN button A J ENTER button arex Setting is finished 6 7 DD Measurement Dielectric Discharge This measurement method is usually used to diagnosis multi layer insulations which requires the instrument to measure the discharge current and capacitance of the measured object 1 min after the removal of the test voltage This is a very good diagnostic insulation test that allows deterioration and other problems voids in the multiple insulations to be assessed Current value 1 min after completing Dielectric measurement mA Discharge g Voltage value when a measurement Complete V x Capacitance F DD 2 0 or less 2 0 4 0 4 0 7 0 7 0 or more Criteria Good Warning Poor Very Poor This criteria is a guide and could be slightly changed and be adapted to particular objects under test based on practical experience of the users This method has been established to test high voltage generators installed in electric power plants in the Europe countries DD Measurement Res
27. n degradation KEW3127 stops measurement automatically so as not to develop further damage KEW3127 continues measurement until an event of breakdown or current sudden increase is detected 2 Burn mode When Buren mode is selected KEW3127 continues measurement even if breakdown or current sudden increase event occurs Keep checking the damage degree of the breakdown point and find the insulation failure point Testing performed in Burn mode is destructive When breakdown occurs and measurement stops breakdown mark blinks When 250V Range has been selected it is unable to select the Breakdown mode 6 4 Continuous measurement Press down and turn the Test button clockwise to lock it to perform a continuous measurement of insulation resistance After testing turn the button counterclockwise and set it to the initial position A DANGER Be extremely careful not to get electric shock as high voltage is present on the tip of test leads continuously 6 5 IRPDar Measurement At IRPDaR measurement PI DAR values are automatically calculated and displayed During a measurement values of current being measured and capacitances measured at discharging after measurement are displayed IReypar Measurement Result Output voltage Resistance value During measurement Output current End of measurement Capacitance Time when a test ends DAR or PI value 1 Setting items Setting
28. oltage monitor Backlight function to facilitate working at dimly illuminated location or at nighttime work Bar graph to display measured result LIVE circuit warning symbols plus audible warning With Auto power off function To prevent the instrument being left powered on and conserve battery power the instrument automatically turns off approx 10 min after the last switch operation Auto measurement and display of PI Polarization Index DAR Dielectric Absorption Ratio and DD Dielectric discharge Step Voltage SV leakage current and capacitance measurements and Ramp measurement for breakdown voltage check Filter function to reduce the variations in readings due to external influences With a short current of max 5mA quick measurement is possible even if the object under test has capacitive components Internal saved data and real time measuring data can be transferred to a PC via Bluetooth communication or by using special USB adapter MODEL8212 USB Easy settings for KEW3127 and data analysis via PC are possible with the application software 3 Specification Applicable standards IEC 61010 1 IEC 61010 031 Standard for hand held probes MODEL7165A CAT IV 600V MODEL7224A CAT IV 600V MODEL7225A CAT IV 600V When KEW3127 and the test lead are combined and used together whichever is lower category either of them belong to is applied IEC 61326 2 2 EMC standard IEC 60529 IP40 Instrument IP6
29. own is detected until applying voltage reaches to the preset value Breakdown voltage will be displayed after a measurement Note Ensure that the object under test is completely discharged before performing a Ramp measurement Ramp measurement result Output voltage Resistance value soc End of test AEAN BI Output current Breakdown mark Either following marks blinks when breakdown occurs Time when a test ends Breakdown voltage Voltage value when breakdown occurred Burn mode is set 4 Breakdown mode is set 1 Setting items Setting items for RAMP measurement are as follows For RAMP measurement 250V cannot be set at 500V 250V Range Speed of voltage rise Voltage rise per minute Breakdown Burn Either Breakdown or Burn mode is selectable 2 Setting procedures Follow the procedures below Output voltage rate can be set between 100V min and 9000V min Stand by state J ENTER button ama Setting of Voltage rise speed with UP DOWN button A J ENTER button amer Setting of Breakdown Burn with UP DOWN button A ENTER button swe Setting is finished 6 9 Voltage characteristics of measuring terminal KEW3127 Output characteristics IRppar mode 6000
30. red trademark of Bluetooth SIG 9 2 How to install the Software Followings are the instructions to install the software KEW Windows and KEW Windows for KEW3127 1 Before installing the software followings shall be checked To prepare your system to install this software please close all open programs Be sure NOT to connect the instrument with USB until install is completed Installation shall be done with administrative right 2 Download the file KewWin3127Inst_eng exe from our homepage http www kew ltd co jp 3 Run the KewWin3127Inst_eng exe Then following window appears Click Next The InatalShieid R Wizard nili instal KEW Windows V2 on your computer To continue cick Next WARNING This program is protected by copyright law and international teases Read through and understand the License Agreement and check I accept Then click Next J KEW Windowsv2 InstallShield Wizard License Agreement Please read the following license agreement carefully KEW WindowsV2 License Agreement Aa KYORITSU ELECTRICAL E INSTRUMENTS WORKSLTD You should carefully read the following agreement before using this software If you do not agree to the terms of this agreement do not use the software and destroy all copies of it Your use of this software indicates your acceptance of this license agreement and warranty Laccept the terms in the bcense agr
31. ric potential exceeds 600V voltage to ground in order to avoid getting electrical shock In addition do not use this instrument when the voltage to ground is 600V or higher even the line voltage is 600V or less Ensure that a measurement is performed at the secondary side of the circuit breaker when testing the voltages of power lines which has a large current capacity in order to avoid possible hazard to the user Extra precaution shall be taken to minimize the possibility of shorting the power line with the metal tip of test lead at voltage measurement It may cause personal injury Do not start a measurement with the battery cover removed Connect the Earth cord black to the Earth terminal of the circuit under test Set the Rage switch to any position other than OFF position Press the MODE button and select VOLT mode No need to press the Test button KEW3127 has an AC DC auto detect circuit and can measure DC voltage as well At DC voltage measurement when applying positive voltage to the Line Probe red positive value is displayed on the LCD Ensure that the circuit breaker of the circuit under test is turned off 1 Connect the Earth Cord black to the earth side of the circuit under test and the Line Probe red to the line side respectively 2 Confirm that the voltage displayed onthe LCD is Lo If the display doesn t show Lo voltage is applied on the circuit under test Che
32. s that can cause serious or fatal injury A CAUTION is reserved for conditions and actions that can cause injury or instrument damage A DANGER Never make measurement on the circuit in which electrical potential to ground over 600V exists 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 Be careful not to short circuit the power line with the metal part of the test leads when measuring voltage It may cause personal injury Do not apply inputs exceeding the maximum allowable measuring range Do not press the Test button with test leads connected to the instrument Never open the battery compartment cover while making a measurement Do not touch the circuit under test while measuring insulation resistance or right after a measurement You may get an electric shock by a test voltage A WARNING Never attempt to make any measurement if any abnormal conditions are noted such as broken case and exposed metal parts or when inner jackets are seen through the nicked outer jacket Do not rotate the Range switch with the test leads connected to the equipment under test Do not install substitute parts or make any modification to the instrument Return the instrument to your local Kyoritsu distributor for repair or re cali
33. tablishes 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 I Electrical circuits of equipment connected to an AC electrical outlet by a power cord CAT III Primary electrical circuits of the equipment connected directly to the distribution panel and feeders from the distribution panel to outlets CAT IV The circuit from the service drop to the service entrance and to the power meter and primary overcurrent protection device distribution panel Incoming wire ji za Interior wiring F O Device which is CAT IV not directly connected to the mains power supply Socket 2 Feature KEW3127 is a microcomputer controlled high voltage insulation resistance tester with 5 range for measuring insulation resistance Designed to following safety standards IEC 61010 1 CAT IV 600V Pollution degree 2 IEC 61010 031 Requirements for hand held probes With auto discharge function When insulation resistance like a capacitive load is measured electrical charges stored in capacitive circuits are automatically discharged after measuring Discharge can be checked on the v
34. ter to a mains socket outlet The mains supply voltage must not exceed AC240V Handling and storage instructions specified by the battery manufacturer should be observed A WARNING Never attempt to make any measurement if any abnormal conditions such as a break on the Power adapter or exposed metal parts are present on the instrument When unplugging the Power adapter from the mains socket outlet do so by removing the plug first and not by pulling the cord 1 Set the Range Switch to the OFF position 2 Confirm a battery is installed in the instrument 3 Slide the shutter of the terminal to the measurement terminal side and connect the Power Adapter 4 LED Status Indicator flashes in red and the Battery Mark also flashes on the LCD 5 The indicator lights up in green and the Battery Mark on the LCD stops flashing and lights up Battery charge completes in about 8 hours KEW3127 cannot perform measurement while charging battery Battery life and how many times can be charged are depended on conditions of use and environment Storing rechargeable lead acid batteries ina low charged state could lead to reduced life and or damage When storing the battery for a long period check and charge the battery at regular intervals 10 2 How to replace battery A DANGER Never open the battery compartment cover while making measurement To avoid possible electric shock disconnect the test lead and
35. therefore they are displayedas when the measured insulation resistances fall under any of following cases measured value is 0 0MQ measured value is OL OL is displayed when the measured value exceeds the upper limit of the measuring range at each insulation resistance range Range Upper limit 250V 12GQ 500V 120G Q 1000V 240G Q 2500V 1200G 9 5000V 12TQ 6 5 4 How DAR PI values are displayed LCD shows DAR PI values as shown below during measurements 1 Start of test yani IR poar om om a _ THe No DARYPI value is displayed DAR value is displayed 3 10 min after the start of test E anini A PI value is displayed AS HG Press the UP DOWN button LAX to switch DAR and PI values 6 5 5 How to review the measured DAR PI values Press the UP DOWN button AS when measurements end The measured results are then displayed in following sequence If the measurement ends earlier than the intervals described in below 2 3 or 4 blank displays aren t shown and returns to 1 1 Start of test an 2 1 min after the start of test 3 10 min after the start of test yai BREAK DOWN 4 Results at 10 min after a start of tes LOTi IRpvoar was a aa Q ble ASR Return to 1 Time when a test ends Value meas
36. tive values at 12V of supply voltage Range 250V 500V 1000V 2500V 5000V VOLT Output at For 10 sec after a test is started 700mA short circuit after that 180mA Hei 380mA 440mA 510mA 670mA 860mA is outputted 0 25MQ 0 5MQ2 AMQ 2 5MQ 5MQ 110mA Cunt ak GOMA 60mA 70mA 90mA 140mA open circuit On stand by 30mA ee backlight Increased by 30mA is on Note Current values in above table are all approximate values Operating time dAccessories approx 10 hours continuous under a load of 100M Q at 5000V Insulation resistance range Line probe MODEL7165A Including MODEL8255 Straight type prod with molded parts Earth cord MODEL7224A Guard cord MODEL7225A Hard Case MODEL9171 Pickel Type Prod MODEL8019 Straight Type Prod MODEL8254 Instruction manual Power Adapter Optional accessories USB Communication set MODEL8258 USB adaptor MODEL8212USB with KEW Windows for 3127 Adaptor for recorder MODEL8302 Line probe with alligator clip MODEL7168A Long Line probe with alligator clip 15m MODEL7253 4 Instrument layout 4 1 Instrument layout 1 LCD display 2 MEMORY button 3 ENTER button 4 MODE button 5 ESC button 6 UP DOWN button 7 FILTER button 8 TEST button 9 Backlight button 10 Range switch 11 Earth terminal 12 Guard terminal 13 Line termina
37. to power off Used location Liquid crystal display Bar graph Max 41points DAR PI value 9 99 Time 99 59 Battery mark display in 4 levels OL mark appears at insulation resistance range and Hi mark at voltage range Range shifts to upper range 1000 counts Range shifts to lower range 80 counts Only at the insulation resistance range Power off function operates in 10 min after the last switch operation altitude 2000 m or less Temperature amp humidity range guaranteed accuracy 23 C 5 C Relative humidity 85 or less no condensation Operating temperature amp humidity range 0 C to 40 C Relative humidity 85 or less no condensation Storage temperature amp humidity range Overload protection Withstand voltage Insulation resistance Dimension Weight Power source Power Adapter for recharging 20 C to 60 C Relative humidity 75 or less no condensation Insulation resistance range AC1200V 10sec Voltage range AC720V 10sec AC6720V 50 60HZz Ssec Between electrical circuit and enclosure 1000M Q or more DC1000V Between electrical circuit and enclosure 208 L x225 W x130 D mm Hard case 380 L x430 W x154 D mm 4kg approx including battery Total 8kg approx including accessories Rechargeable battery 12V5Ah Lead acid batteries PXL12050 or equivalent Output DC15V 15VA Input 100 240V 50 60Hz 8 OG Current consumption representa
38. ult Output voltage Resistance value Time when ont l Discharge current or a test ends Capacitance switchable gt with UP DOWN button LAJ DD or Voltage value switchable with UP DOWN button LAJ 1 Setting items Setting items for DD measurement are as follows For DD measurement 250V cannot be set at 500V 250V Range Step time Measurement duration per step Breakdown Burn Either Breakdown or Burn mode is selectable 2 Setting procedures Follow the procedures below Stand by state ENTER button swex Setting of Step time with UP DOWN button A 7 ENTER button are Setting of Breakdown Burn with UP DOWN button A 7 J ENTER button ama Setting is finished 6 8 Ramp Measurement Voltage used in Step voltage test is raised in steps but that used in Ramp measurement is gradually raised Therefore Ramp measurementis useful to find the points of insulation failure without causing serious damages This enables you to locate a fault such as pinholes in windings by seeing a spark or a wisp of smoke KEW3127 displays the breakdown voltage value when insulation breakdown occurs in load Breakdown mode When a breakdown occurs KEW3127 stops measurement and displays the voltage which caused breakdown When no breakdown is detected voltage is raised till it reaches to the preset voltage value Burn mode KEW3127 continues measurement even if a breakd
39. ured at the end of test resistance value DAR or PI value Capacitance 1 min after the start of test Elapsed time 15 or 30 sec Value measured 15 or 30 sec after a start of test resistance value output voltage DAR value Output Current measured 15 or 30 sec after a start of test Elapsed time 1 min Value measured 1 min after a start of test resistance value output voltage DAR value Output Current measured 1 min after a start of test t Elapsed time 10 min Value measured 10 min after a start of test resistance value output voltage PI value Output Current measured 10 min after a start of test 6 6 SV Measurement Step Voltage This is a test based on the principle that an ideal insulation will produce identical readings at all voltages while an insulation which is being over stressed will show lower insulation values at higher voltages During the test the applied voltage incrementally steps by a certain voltage taking successive 5 time measurement Degradation of insulation may be doubt when insulation resistances become lower at higher applied voltages SV Measurement Result pia Output voltage Resistance value Time when a test ends End of test Capacitance Present step an 1st step a 2nd step alll Sth step 1 Setting items Setting items for SV measurement are as fol
Download Pdf Manuals
Related Search