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KYORITSU KEW 3127, Instruction Manual

The KYORITSU KEW 3127 is a versatile and reliable device that helps users with electrical measurements. To make the most of this product, you can easily access the Instruction Manual for free download from our website. Get detailed guidance on operating your KYORITSU KEW 3127 efficiently and effectively.

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4-2 LCD display 

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

 
 
 
 
 
 
 
 
 
 
 
 

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Summary of Contents for KEW 3127

Page 1: ...INSTRUCTION MANUAL HIGH VOLTAGE INSULATION TESTER KEW 3127 ...

Page 2: ...ltage measurement 14 6 2 Insulation resistance measurement 15 6 3 About BREAKDOWN mode and BURN mode 19 6 4 Continuous measurement 20 6 5 IRPI DAR Measurement 21 6 6 SV Measurement Step Voltage 27 6 7 DD Measurement Dielectric Discharge 28 6 8 Ramp Measurement 30 6 9 Voltage characteristics of measuring terminal 32 6 10 Use of Guard terminal 32 6 11 Filter function 33 6 12 Backlight function 33 6 ...

Page 3: ...KEW Windows for KEW3127 45 9 4 Features of KEW Smart 47 10 Battery Charging and Replacement 48 10 1 How to charge battery 48 10 2 How to replace battery 49 11 Accessories 51 11 1 Metal part for Line Probe and replacement 51 11 2 How to use the adaptor for recorder 52 11 3 Line probe with alligator clip 52 12 Disposing the Product 53 ...

Page 4: ...ed 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 Kyoritsu is by no means liable for any damage resulting from the instrument in contradiction to this cautionary note The...

Page 5: ...be used only in its intended applications or conditions Otherwise safety functions equipped with the instrument do not work and instrument damage or serious personal injury may be caused Keep your fingers and hands behind the protective fingerguard during measurement WARNING Never attempt to make any measurement if any abnormal conditions are noted such as broken case and exposed metal parts or when...

Page 6: ...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...

Page 7: ...can endure greater momentary energy than one designed for CAT II O Circuits which are not directly connected to the mains power supply CAT II 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...

Page 8: ...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...

Page 9: ...0 0 99 9MΩ 100 999MΩ 1 00 9 99GΩ 10 0 99 9GΩ 0 0 99 9MΩ 100 999MΩ 1 00 9 99GΩ 10 0 99 9GΩ 5 rdg 3dgt 100 999MΩ 1 00 9 99GΩ 1 00 9 99GΩ 10 0 99 9GΩ 2 00 9 99GΩ 10 0 99 9GΩ 100 199GΩ 100 999GΩ 100 999GΩ 1 00 9 99TΩ 20 rdg Display range 0 0M 12 00GΩ 0 0M 120 0GΩ 0 0M 240GΩ 0 0M 1200GΩ 0 0M 12 00TΩ Open circuit voltage DC 250V 10 10 DC 500V 20 10 DC 1000V 20 0 DC 2500V 20 0 DC 5000V 20 0 Rated current...

Page 10: ...curacy DC voltage 30 600V AC voltage 30 600V 50 60Hz 1V 2 rdg 3dgt 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 Ammeter Output Current Measuring range Accuracy 0 00nA 5 50mA 10 rdg 1 1 If result of resistance measurement is 10MΩ or more output current is determined by resistance and voltage Accuracy ...

Page 11: ...ty 85 or less no condensation Operating temperature humidity range 0ºC to 40ºC Relative humidity 85 or less no condensation Storage temperature humidity range 20ºC to 60ºC Relative humidity 75 or less no condensation Overload protection Insulation resistance range AC1200V 10sec Voltage range AC720V 10sec Withstand voltage AC6720V 50 60Hz 5sec Between electrical circuit and enclosure Insulation res...

Page 12: ...lues in above table are all approximate values Operating time approx 10 hours continuous under a load of 100MΩ at 5000V Insulation resistance range Accessories 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...

Page 13: ... button 8 TEST button 9 Backlight button 10 Range switch 11 Earth terminal 12 Guard terminal 13 Line terminal 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 21 Protective fingerguard It is a part providing protection against electrical shock and ensuring the minimum required air and creepage dist...

Page 14: ...ILTER 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 16 12 15 17 2 4 5 6 8 9 18 11 3 1 7 10 13 14 ...

Page 15: ... tab at the bottom of the latch 1 To open pull up the latch release tab in the direction of the arrow 2 To close lower the latch and press until it snaps Never press the latch release tab 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 Handles ...

Page 16: ...cy 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...

Page 17: ...t a measurement with the battery cover removed Connect the Earth cord black to the Earth terminal of the circuit under test Keep your fingers and hands behind the protective fingerguard during measurement 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 v...

Page 18: ...h 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 up...

Page 19: ...nal 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 resist...

Page 20: ... operates to discharge the electrical charges on the circuit under test Confirm that the voltage monitor shows 0V 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 Keep your fingers and hands behind the protective fingerguard...

Page 21: ...er tests are automatically inhibited and the over temperature symbol appears on the display The instrument must then be left cool down Testing shall be resumed when symbol disappears Short circuit currents at a start of measurement may get lower when the symbol appears Depending on the ambient temperature or measured resistances the symbol may appear and interrupt a PI measurement Principle of Ins...

Page 22: ...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 250V Range has be...

Page 23: ...easurement of insulation resistance After testing turn the button counterclockwise and set it to the initial position DANGER Be extremely careful not to get electric shock as high voltage is present on the tip of test leads continuously Keep your fingers and hands behind the protective fingerguard during measurement ...

Page 24: ...ws 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 Resistance value During measurement Output current End of measuremen...

Page 25: ... 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 PI Insul...

Page 26: ...nd rotate the Range switch to power on KEW3127 DAR mark starts blinking Press the UP DOWN button to switch 15 sec and 30 sec displayed at the lower left on the LCD Select the desirable one Press the ENTER button 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 measur...

Page 27: ...re displayed as when the measured insulation resistances fall under any of following cases measured value is 0 0MΩ 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 12GΩ 500V 120GΩ 1000V 240GΩ 2500V 1200GΩ 5000V 12TΩ ...

Page 28: ...AR PI values as shown below during measurements 1 Start of test No DAR PI value is displayed 2 1 min after the start of test DAR value is displayed 3 10 min after the start of test PI value is displayed Press the UP DOWN button to switch DAR and PI values ...

Page 29: ... 2 1 min after the start of test A Elapsed time 15 or 30 sec B Value measured 15 or 30 sec after a start of test resistance value output voltage C DAR value D Output Current measured 15 or 30 sec after a start of test 3 10 min after the start of test A Elapsed time 1 min B Value measured 1 min after a start of test resistance value output voltage C DAR value D Output Current measured 1 min after a...

Page 30: ...aking successive 5 time measurement Degradation of insulation may be doubt when insulation resistances become lower at higher applied voltages 1 Setting items Setting items for SV measurement are as follows 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 Resistance value During test Output c...

Page 31: ...moval 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 measurement mA Voltage value when a measurement Complete V x Capacitance F Dielectric Discharge 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 g...

Page 32: ...s selectable 2 Setting procedures Follow the procedures below Stand by state ENTER button Setting of Step time with UP DOWN button ENTER button Setting of Breakdown Burn with UP DOWN button ENTER button Setting is finished Resistance value Discharge current or Capacitance switchable with UP DOWN button DD or Voltage value switchable with UP DOWN button Time when a test ends Output voltage DD Measur...

Page 33: ...ent 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 breakdown 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 perfor...

Page 34: ...ge 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 ENTER button Setting of Voltage rise speed with UP DOWN button ENTER button Setting of Breakdown Burn with UP DOWN button ENTER button Setting is finished ...

Page 35: ...urrent 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 0 1000 2000 3000 4000 5000 6000 Output Voltage V Insulation Resistance 0 1 MΩ 1...

Page 36: ...tion 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 ...

Page 37: ...MORY 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 date measured values resistance current voltage capacitance 2 IRPI DAR mode PI DAR value DD mode DD value Ramp mode Break...

Page 38: ...mode shall be done after finishing a measurement while the result is being displayed on the LCD 2 Press the MEMORY button 3 Selecteither MEMORY or LOGGING with the UP DOWN button 4 Press the ENTER button When selecting When selecting LOGGING MEMORY 5 Saving completes and back to stand by state 5 Stand by state 6 Press the TEST button 7 Measurement and logging start Blink LOGGING mark appears ...

Page 39: ...tton for 1 sec or longer 3 Selecteither MEMORY or LOGGING with the UP DOWN button 4 Press the ENTER button 5 Select a memory number with the UP DOWN button 6 Press the ENTER button 7 Saved data will be displayed If the recalled data is logging data the latest data will be displayed Press the UP DOWN button to switch the display of current value and capacitance value Blink Memory No 1s or longer ...

Page 40: ...to the previous screen Recall and display the data which one wishes to delete See clause 7 3 How to recall the saved data 1 Recall and display the saved data 2 Press the ESC button for 1 sec or longer 3 Confirmation screen is displayed 4 Press the ENTER button to delete the data 5 Return to Memory No selection screen 1s or longer ...

Page 41: ...R button 3 Then M D starts blinking Adjust the month with the UP DOWN button and then press the ENTER button Likewise adjust day with the UP DOWN button and then press the ENTER button 4 The last parameter h m starts blinking Adjust hour with the UP DOWN button and then press the ENTER button Do the same to set minute and press the ENTER button 5 Now clock setting completes Power off the instrumen...

Page 42: ... 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 disconnect...

Page 43: ...oth Bluetooth mark is displayed on the LCD When KEW3127 communicates via MODEL8212USB USB mark 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 f...

Page 44: ...about Windows os CPU Pentium 4 1 6GHz or more Memory 512Mbyte or more for Windows XP 1Gbyte or more for Windows 7 Vista Display 1024 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 Blu...

Page 45: ...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 Read through and understand the License Agreement and check I a...

Page 46: ... 43 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 ...

Page 47: ... 44 Click Finish when install completes An installation of KEW Windows for KEW3127 is followed by the installation of KEW Windows ...

Page 48: ...nel 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 Program 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 appears Click Data Download or Instrument Sett...

Page 49: ... 46 ...

Page 50: ...g 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...

Page 51: ...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 char...

Page 52: ...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...

Page 53: ...d storage battery PXL 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 5 Slide and attach the battery compartment cover and tighten it with screw Ensure that the arrow mark on the battery compartment cover matches with the CLOSE mark on the instrument case Pull the connect...

Page 54: ...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 clock...

Page 55: ...ment Connect it as shown in the below figure Output is DC1mA when current of 1μA is flowing MODEL8302 can measure currents up to 2mA 11 3 Line probe with alligator clip optional accessory 1 MODEL7168A Line probe with alligator clip 2 MODEL7253 Long Line probe with alligator clip 15m To recorder To shield or Earth LINE ...

Page 56: ... 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 ex...

Page 57: ... 54 MEMO ...

Page 58: ... 55 MEMO ...

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Page 60: ...1 19 92 2156A DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations ...

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