Cautionary statement/ Errata sheet Followings are corrections and additional explanations for KEW3128 Instruction manual. The contents of this sheet apply to the instrument with firmware ver.1.12 or later. Specification tale for [Insulation Resistance Tester] on page 10 & 11 of the Instruction manual for KEW3128 is modified as follows. The lower accuracy limit, display range and out-of-range display at each Voltage Range are added.
P.11 Additional graph of “Resistance-Output voltage Characteristic” for each Voltage range [Graph of Resistance-Output voltage Characteristic] 500V/1000V/2500V/5000V Range 10kV/12kV Range 14,000 5000V 12kV 12,000 5,000 4,000 2500V 3,000 2,000 1000V 1,000 0 0.0001 Output Voltage (V) Output Voltage (V) 6,000 500V 0.001 0.01 0.1 1 10 100 10,000 10kV 8,000 6,000 4,000 2,000 0 0.0001 0.001 0.01 0.
P32 Additional explanation to “Setting of Measurement Period” The smallest value of selectable period is 15 seconds. P41 Additional explanation to “6.1.6 Filter Mode” Filter 1 : It uses it to cut the exchange element more than industrial frequency (50/60Hz) when a high electric field has been generated around the circuit under test. Filter 2 : Five measured latest data are averaged. Filter 3 : Filter 1 and Filter 2 are used at the same time. P.41 Additional explanations to “6.1.
P. 49 Additional sentences at “6.4.2 How to measure PI” DAR Simultaneous display DAR value is displayed during PI measurements and the measured results are being displayed. TIME 1 and 2 values for DAR are the ones pre-set in the DAR mode. Refer to 6.5.2 How to measure DAR and set the time for DAR. In case that DAR TIME 2 value is higher than PI TIME 2 value, DAR value isn’t displayed on the LCD. A measurement stop when the PI TIME 2 comes. PI value isn’t displayed in the DAR measurement mode. P.
Instruction Manual High Voltage Digital Insulation Tester KEW 3128
Contents KEW3128 Contents Contents ････････････････････････････････････････････････････････････ 2 1. Safety Warnings ･･･････････････････････････････････････････････････ 4 2. Feature ･･･････････････････････････････････････････････････････････ 7 3. Specification ･･････････････････････････････････････････････････････ 9 4. Instrument Layout ････････････････････････････････････････････････16 4. 1 FRONT VIEW ･････････････････････････････････････････････････16 4.
KEW3128 Contents 6.4.3 Measured Result ･･･････････････････････････････････････････52 6. 5 DAR MEASUREMENT (DIELECTRIC ABSORPTION RATIO) ･53 6.5.1 Dielectric Absorption Ratio ･･･････････････････････････････････53 6.5.2 How to measure DAR ･･･････････････････････････････････････54 6.5.3 Measured Result ･･･････････････････････････････････････････56 6. 6 DD MEASUREMENT (DIELECTRIC DISCHARGE) ･･･････････57 6.6.1 Dielectric Discharge ･････････････････････････････････････････57 6.6.
1. Safety Warnings KEW3128 1. Safety Warnings ○ This instrument has been designed, manufactured and tested according to IEC 61010: Safety requirements for Electronic Measuring apparatus, and delivered in the best condition after passing quality control tests. This instruction manual contains warnings and safety rules which have to be observed by the user to ensure safe operation of the instrument and to maintain it in safe condition.
KEW3128 1. Safety Warnings # DANGER ● Put a pair of insulated gloves and use this instrument. ● Never make measurement on a circuit in which the electrical potential exceeds AC/DC600V. ● 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 are wet.
1. Safety Warnings KEW3128 # CAUTION ● Always make sure to set the Range Switch to the appropriate position before making measurement. ● Be sure to set the Range Switch to the“OFF”position after use and remove the test leads. When the instrument will not be in use for a long period, place it in storage after removing the battery. Instructions how to remove a battery are described at Clause 7. Battery Charging and replacement (=>P.71).
KEW3128 2. Feature 2. Feature KEW3128 is a digital high voltage insulation resistance tester with 6-range: 500V, 1000V, 2500V, 5000V, 10000V and 12000V, and can measure up to 35TΩ. Fine adjustment of voltage setting at each Range is available. Measured results can be saved in the internal memory; they can be transferred to a PC via a special USB cord. Measuring data can also be transferred to a PC in real-time. ● Designed to meet following safety standards: IEC 61010-1 CAT.
2. Feature KEW3128 ● Large Display 5.7-inch (320 x 240 dots) ● Graph Display Variations in insulation resistances and leakage currents under measurements are displayed as graphs. ● Application Data in the internal memory or measuring in real-time can be transferred to a PC via a special USB adapter. The supplied software facilitates setting of the instrument and data analysis.
KEW3128 3. Specification 3. Specification ● Applicable Standards: IEC61010-1 CAT.
3. Specification KEW3128 ● Measuring Range and Accuracy（under 23±5ºC and 45 – 75%RH） 【Insulation Resistance Tester】 Rated Voltage 500V 1000V Max value 500GΩ 1TΩ 0~50GΩ ±5%±3dgt Accuracy * Accuracy is not guaranteed 50G~500GΩ with setting of 250V ±20% or less. Short-circuit current Rated measurement current 100G~1TΩ±20% Max 5.0mA 1mA or more, 1.2mA or less under a load of 0.5MΩ * Should be 500V or more 1mA or more, 1.2mA or less under a load of 1MΩ Rated Voltage 2500V 5000V Max value 2.
KEW3128 Rated Voltage Max value Accuracy Short-circuit current Rated measurement current 【Output Voltage】 Rated Voltage Monitor Accuracy Output Accuracy 3. Specification 10000V 12000V 35TΩ 35TΩ 0~1TΩ 0~1TΩ ±5%±3dgt ±5%±3dgt 1T~10TΩ 1T~10TΩ ±20% ±20% 10T~35T 10T~35T Values are displayed, but Values are displayed, but accuracy isn’ t guaranteed accuracy isn’ t guaranteed Max 5.0mA 0.15mA or more, 0.25mA 0.15mA or more, 0.
3. Specification KEW3128 【Volt Meter】 Range Measuring Range Voltage Test DC Voltage AC Voltage ±30~±600V 30~600V(50/60Hz) Accuracy ±2%rdg±3dgt 【Frequency】 Range Voltage Test Measuring Range 45.0 ~ 65.0Hz Accuracy ±0.2Hz 【Ammeter】 Measuring Range 0.0nA ~ 2.40mA (determined by resistance and voltage values) Depending on the effective range of insulation resistances 500V ~ 5000V Range 10000V / 12000V Range 5.0nF ~ 50.0μF 5.0nF ~ 1.
KEW3128 3. Specification ● Operating system ● Display Dual integration ● Low battery warning ● Response time Battery mark display (in 4 levels) approx 30 sec in a range of ±5% of accuracy approx 60 sec in a range of ±20% of accuracy (Response time becomes slower when output voltage becomes lower.) ● Auto-power-off Power-off function operates when 10 min pass without any key operation.
3. Specification KEW3128 ● Current Consumption (representative values at 12V of battery voltage) Range 500V 1000V Short-circuiting the output 2650mA 2300mA Short-circuiting the output of rated current 1350mA/0.5MΩ 1500mA/1MΩ Opening the output 210mA 220mA Range 2500V 5000V Short-circuiting the output 1700mA 1600mA Short-circuiting the output of rated current 1650mA/2.
KEW3128 3.
4. Instrument Layout KEW3128 4. Instrument Layout 4.
KEW3128 4. Instrument Layout Keys Keys Details Backlight Key Short press : Turn on/ off the LCD Backlight Long press : Save the displayed screen as a (1sec or longer) BMP (bitmap) file. ESC Key Cancel a process, or return to the previous screen. ENTER Key Confirm entries, or move to the next screen. UP/DOWN Key Move a cursor or alter setting values. TEST Button Start measurements. Range Switch Power on/off the instrument, or select a Measurement Range.
4. Instrument Layout KEW3128 Connectors 4.
KEW3128 4. Instrument Layout 4. 3 Test Leads Earth Cord (Black) Guard Cord (Green) Line Probe (red) Line Probe w/Alligator Clip (red) Depending on usage, either Line Probe or Line Probe with Alligator Clip is connected to the Line terminal. 4. 4 Hard Case Regulating valve Regulating valve is to balance the air pressure in the Case hermetically sealed and external atmosphere for easy opening/closing of Case lid. Do not force to turn it or remove it.
5. Preparation for Measurement KEW3128 5. Preparation for Measurement 5. 1 Checking the battery voltage Set the Range Switch to any position other than“OFF”without connecting the Power Cord to the Power Connector. When the Battery Mark shown at the upper right on the LCD is last 1 level ( ), the battery is almost exhausted. Replace or recharge battery to continue measurements. The instrument operates properly even if under such a low battery, and such a low battery status may not affect the accuracy.
KEW3128 6. Measurement 6. Measurement 6. 1 Basic Operation 6.1.1 How to start measurements Start-up Screen Setting the Range Switch to any position other than the OFF position powers on the instrument. Setting the Switch to the OFF position powers off the instrument. Following Start-up Screen with Model name and Version info is displayed when powering on the instrument. Then KEW logo will appear. * Pressing the Enter Key skips the opening screen.
6. Measurement KEW3128 How to select a Measurement Mode A long press (1 sec or more) of the ESC Key displays the Mode Selection Screen. Measurement modes which are selectable on the Model Selection Screen are mentioned at“Insulation Diagnosis test”(=>P.47). Move the cursor with the UP/ DOWN Key or Shuttle Switch, and confirm the mode with the ENTER Key. Then a process from making settings to a start of measurement is displayed at the bottom of the LCD.
KEW3128 6.1.2 6. Measurement Steps for Measurements Insulation Resistance Measurement ① Check the voltage which can be applied to the circuit under test, and set the Range Switch to any desired Voltage Range. ② Select the“IR”(Insulation Resistance) on the Mode Selection Screen, and press the ENTER Key. The instrument gets started with the previously selected mode, and enters into the stand-by mode. ③ Set a voltage value, and confirm it with the ENTER Key. ④ Confirmation Screen is displayed.
6. Measurement KEW3128 ⑤ The instrument enters into stand-by mode when settings are made. Connect the Earth Cord (black) to the Earth Terminal of the circuit under test. LINE ⑥ Put the tip of the Line Probe (red) to the circuit under test. Then press the Test Button. The buzzer sounds intermittently during a measurement. Press and turn the Test Button clockwise to lock the Button for making measurements continuously.
KEW3128 6. Measurement ⑧ The measured value will be displayed on the LCD. ⑨ Release the Button to stop the measurement. Then the measured results will be displayed on the LCD. Turn the locked Test Button counterclockwise and unlock the Button. ⑩ This instrument has an auto-discharge function. With the test leads connected to the circuit under test, release the Test button to discharge capacitance in the circuit after test. Confirm that the readings on the Voltage monitor becomes“0V”.
6. Measurement KEW3128 # DANGER ● Do not touch the circuit under test just after finishing a measurement. The charged potentials may cause electrical shock hazard. ● Do not touch the circuit under test and also not to remove the test leads until a discharge completes. ● Check with a High Voltage Detector that there is no electrical charge exists on the circuit under test. ● Be sure to put on a pair of insulated gloves for high voltage.
KEW3128 6. Measurement Note: * Insulation resistance values of the equipment under test may not be stable, and the readings on the LCD may be unstable. * Oscillation sound may be heard during insulation resistance measurement, but it is not malfunction. * It takes time to measure a capacitive load. * Measurements, right after a measurement complete, may not get started even the Test Button is pressed. In such a case, press the Button in several seconds later.
6. Measurement KEW3128 capacitors or something like this when short-circuiting/ opening the Line – Earth (Guard) of the test lead during an insulation resistance measurement is repeated. In this case,“Noise Error”is displayed on the LCD and further measurement is ceased. Placing the test leads onto the LCD tends to cause this phenomenon (indications may be all cleared) ; so do not place the test leads onto the LCD.
KEW3128 6. Measurement Check of Power Interruption（Voltage Measurements） # DANGER ● Do not make measurement on a circuit above AC/DC600V(voltage to earth) to avoid possible electric shock.Do not make a measurement, even if a line voltage is 600V or less, when a voltage to earth is over 600V. ● When testing installation that has a large current capacity, such as a power line, be sure to make measurements on the secondary side of a circuit breaker in order to avoid possible hazard to the user.
6. Measurement 6.1.3 KEW3128 Setting for Measurement Select a mode at Measurement Mode Selection Screen, and make settings for measurements. Setting items are displayed on the LCD one by one. Use the UP/DOWN Key and Shuttle Switch and alter the values, and press the ENTER Key to confirm the entry and move to the next setting item. Pressing the ESC Key returns to the previous item. All the set items are displayed on the LCD once settings are done.
KEW3128 6. Measurement Setting of Output Voltage Output voltage can be selected with the Range Switch first, and then fine adjusted with the Cursor Keys. Selected voltage values cannot be altered while making measurements or outputting voltages. The table below shows the selectable range of voltages and step values at each Measurement Range.
6. Measurement KEW3128 Setting of Measurement Period TIME1 & 2 for PI/DAR Measurements, TIME for DD Measurements and Step time for SV Measurements can be altered respectively. The table below shows the step values for each selectable period.
KEW3128 6.1.4 6. Measurement Graph Operation Selecting the“ Time Axis ZOOM”or“ Measured Value Axis ZOOM”from the ENTER Menu (=>P.37) on the Graph Display Screen enters into Graph ZOOM Mode. In this mode, zooming and scrolling of graphs are available. A short press (within 1 sec) of the ESC Key in the Graph ZOOM Mode quits the Graph ZOOM Mode and returns to a normal Graph Display Screen. The instrument keeps the zoomed percentage and the scrolled condition.
6. Measurement KEW3128 Switching the axis subject to zoom A short press (within 1 sec) of the ENTER Key switches the Measured Value Axis and the Time Axis to be zoomed.
KEW3128 6. Measurement Scrolling of Graph Turn the Shuttle Switch to scroll a graph. The Voltage Axis at SV measurements is fixed and cannot be scrolled. Switching the displayed graphs A long press (1 sec or longer) of the ENTER Key switches Current and Resistance graphs.
6. Measurement KEW3128 Displaying in Full-scale A long press (1 sec or longer) of the ESC Key displays a graph in fullscale. Displaying a graph in full-scale is also possible from the ENTER Menu (=>P.37). Quit the Graph ZOOM Mode and select “ Full-scale Display” from the ENTER Menu.
KEW3128 6.1.5 6. Measurement Menu The Menu is available when“ middle of the LCD. Pressing the ENTER Key while“ pops up the Menu Window. ”is being displayed on the upper ”is being displayed on the LCD Move the cursor with the UP/DOWN Keys or Shuttle Switch, and confirm the selection with the ENTER Key. Pressing the ESC Key while the Menu is being displayed closes the Menu Window. Items displayed with “ ”mark are accompanied with submenus. Press the ENTER Key to access to the submenus.
6. Measurement KEW3128 Followings are the details of each menu item. Icon Name View Change Switches the screens. (=>P.39 View Change) Graph ZOOM Selects the Graph Zoom Mode. (=>P.39 Graph ZOOM) Filter Record Save Internal Memory Setting Mode Change Others EXIT 38 Function Makes setting for the Filter Mode. (=>P.40 Filter) Records measured results continuously. Saves the measured results only. Recalls or deletes the data in the internal memory. (=>P.
KEW3128 6. Measurement View Change Switches among Measured value, Current Graph and Resistance graph views. Each sub-menu item has following function. Icon Name Function Measured value Displays Measured value View. Current Graph Displays Current Graph View. Resistance Graph Displays Resistance Graph View. Graph ZOOM Enters into the Graph Zoom Mode (=>P.33 Graph Operation), and displays a graph in full-scale. Each sub-menu item has following function.
6. Measurement KEW3128 Filter Switches on/off the Filter Function. (=>P.40 Filter Mode) Each sub-menu item has following function. Icon Name Function Filter OFF Displays the Measured Value View. Filter 1 Enables Filter 1 Filter 2 Enables Filter 2 Filter 3 Enables Filter 3 Other Functions Make settings for the instrument. Each sub-menu item has following function. Icon Name Clock Setting Print Screen Demo Mode 40 Function Set the clock for KEW3128 instrument. (=>P.
KEW3128 6. Measurement 6.1.6 Filter Mode The KEW3128 has following 3 kinds of Filter Functions. Filter Mode is effective to reduce the variations in readings due to external influences during high resistance measurements. Effectiveness of the Filter Mode becomes stronger when values get bigger. To check sudden variations in resistances, the Filter Mode should be disabled. Name Function Filter OFF Disables the Filter (default setting) Filter 1 Low-pass Filter (fc = 0.
6. Measurement KEW3128 List of the Saved data Select the“ ”Internal Memory on the ENTER Menu (=>P.37). Then a list of saved data is displayed as follows. Functions to recall (⇒displays the saved data), delete (⇒deletes the saved data) and format the data (⇒formats the internal memory) are available. Details of each parameter are as follows. The latest data is displayed on the top.
KEW3128 6. Measurement Recall the Saved Data Display a list of the saved data. Then use the UP/DOWN Key or Shuttle Switch and move the cursor onto [LOAD], and press the ENTER Key. The highlighted cursor is displayed, and can be moved on the files. Put the cursor on a desirable file with the UP/ DOWN Key or Shuttle Switch and press the ENTER Key. A Confirmation Screen appears. Press the ENTER Key to load the selected data. Pressing the ESC Key cancels to load the data.
6. Measurement KEW3128 ● Display the Measured Data Only the measured results can be viewed. The Graph Function isn’t available. The available operations against the displayed data are same to that available when finishing measurements. Press the ESC Key to return to the previous screen. Items displayed at the top of the LCD are same to the display for the Logging data. ●Display the Print Screen Display the saved BMP files. A black frame is displayed with flashing around the LCD.
KEW3128 6. Measurement Format of the Internal Memory Display a list of the saved data. Then use the UP/DOWN Key or Shuttle Switch and move the cursor onto [FORMAT], and press the ENTER Key. Then the memory is formatted and the List Display Screen is displayed.Press the ESC Key to cancel a format. Max number of files that can be saved The max number of files that can be saved is 32 files in total; addingup all the Logging, Result and Print Screen data.
6. Measurement 6.1.8 KEW3128 Clock Setting Select “ ” Clock Setting on the ENTER Menu (=>P.37). Adjust the time in a following order: [year], [month], [day], [hour], [minute] and [display format]. Pressing the ENTER Key confirms the entry and proceeds to next step. Press the ESC Key to return to the previous item. Pressing the ENTER Key (1 sec or longer) while [Finish] is highlighted makes the new setting effective. A long press of the ESC Key returns to the previous screen. 6.1.
KEW3128 6. 2 6. Measurement Insulation Diagnosis Tests This instrument can measure and perform following items as a part of Insulation resistance Test.
6. Measurement 6. 3 6.3.1 KEW3128 IR Measurement Setting Item Setting items for IR measurements are as follows. Refer to Setting for Measurement (=>P.30) and change the setting values. Icon Name Output voltage value Details Voltages to be output 6.3.2 Measured Result The result of IR measurement is displayed as follows.
KEW3128 6. 4 6. Measurement PI Measurement (Polarization Index) 6.4.1 Polarization Index PI : Polarization Index This is a test to check a temporal increase of leakage currents flowing on insulations. To determine a Polarization Index, first, measure insulation resistance at 1 min intervals for 10 min. Then, divide the final value by the initial reading and calculate a ratio.
6. Measurement 4. 2. Set Voltage values. 3. Set TIME1. KEW3128 Set TIME2.
KEW3128 6. Measurement The instrument gets into the Stand-by Mode when settings are made. Setting items for PI measurement are as follows. Refer to the Setting for Measurement (=>P.30) and change settings. Icon Name Output Voltage PI Time 1 PI Time 2 KEW3128 Details Voltage to be output. Measurement doesn’t stop when PI Time 1 has been passed. A measurement stops automatically when this set time comes. This value should be bigger than PI TIME 1.
6. Measurement KEW3128 6.4.3 Measured Result The result of PI measurement is displayed as follows.
KEW3128 6. 5 6. Measurement DAR Measurement (Dielectric Absorption Ratio) 6.5.1 Dielectric Absorption Ratio DAR : 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.
6. Measurement 6.5.2 KEW3128 How to measure DAR 1. Select the“DAR（Dielectric Absorption Ratio）”on the Mode Selection Screen. Refer to Basic Operation (=>P.21) and operate the Screen. 2. Set Voltage values. 3. Set TIME1.
KEW3128 4. 6. Measurement Set TIME2. Setting items for DAR measurement are as follows. Refer to the Setting for Measurement (=>P.30) and change settings. Icon KEW3128 Name Details Output Voltage Voltage to be output. DAR Time 1 Measurement doesn’t stop when PI Time 1 has been passed. DAR Time 2 A measurement stops automatically when this set time comes. This value should be bigger than PI TIME 1.
6. Measurement 6.5.3 KEW3128 Measured Result The result of DAR measurement is displayed as follows.
KEW3128 6. Measurement 6. 6 6.6.1 DD Measurement (Dielectric Discharge) Dielectric Discharge DD : 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.
6. Measurement KEW3128 6.6.2 How to measure DD 1. Select the“DD（Dielectric Discharge）”on the Mode Selection Screen. Refer to Basic Operation (=>P.21) and operate the Screen. 2. Set Voltage values. 3. Set TIME.
KEW3128 6. Measurement Setting items for DD measurement are as follows. Refer to the Setting for Measurement (=>P.30) and change settings. Icon KEW3128 Name Details Output Voltage Voltage to be output Measuring Time Measurements stop automatically and DD values are calculated.
6. Measurement KEW3128 6.6.3 Measured Result The result of DD measurement is displayed as follows.
KEW3128 6. 7 6. Measurement SV Measurement (Step Voltage) 6.7.1 Step Voltage SV : 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.
6. Measurement 3. KEW3128 Set Step Time. Setting items for SV measurement are as follows. Refer to the Setting for Measurement (=>P.30) and change settings.
KEW3128 6. Measurement 6.7.3 Measured Result The result of SV measurement is displayed as follows.
6. Measurement 6. 8 KEW3128 Measurement Screen Displayed items at the top of the LCD Displayed Items Details Measurement Mode Mark of the selected Measurement Mode REC mark/ Possible Recording Period Displayed when“REC”is specified. Possible recording time is displayed with a bar graph and numbers. Filter Mode ENTER Menu Accessible to the ENTER Menu when pressing the ENTER Key while this icon is being displayed. Battery Mark Mark indicating the level of battery voltage.
KEW3128 6. Measurement Items displayed at Result Display Screen Following items are displayed on the LCD in stand-by mode and during a measurement. Displayed Items Details Live Voltage Warning Displayed while voltages are being output.Flashing status shows discharge is in progress. Bar Graph Bar graph indicating the measured insulation resistances Measurement Information Supplementary info about each measurement mode.
6. Measurement KEW3128 Items displayed at Graph Display Screen Following items are displayed on the LCD with in stand-by mode and During a measurement. Displayed Items Details Live Voltage Warning Displayed while voltages are being output. Flashing status shows discharge is in progress. Graph Bar graph indicating the measured insulation resistances. Axis for Current/ Resistance values Axis is switched between current and resistance values depending on each graph.
KEW3128 6. Measurement 6. 9 Capacitance Measurement 6.9.1 Measurement Screen Displayed Items Details Capacitance value Displays capacitance values of the measured object after insulation resistance tests. Measuring Time Elapsed time after a start of measurement At capacitance measurements, measured values are displayed when insulation resistance measurements complete.
6. Measurement 6. 10 KEW3128 Voltage Measurement 6.10.1 Measurement Screen The result of Voltage measurement is displayed as follows.
KEW3128 6. 11 6. Measurement Other Functions 6.11.1 Use of Guard Terminal When measuring insulation resistances of a cable, leakage currents flowing on the surface of cable jacket and the currents flowing inside the insulator are mixed and may cause error in readings. In order to prevent such error, wind a conductive wire around the point where leakage currents flow. Then connect it to the Guard terminal as shown in the below figure.
6. Measurement KEW3128 Use of Guard Terminal at high resistance measurements It may take longer time to obtain accurate readings when measuring high resistances of 100GΩ or higher while the instrument is operated with battery instead of an external power supply. In this case, wind the Guard Cord connected to the Guard Terminal to the Earth Cord. Then accuracy of the readings gets better. Guard Cord LINE Earth Cord 6.11.
KEW3128 7. Battery Charging and Replacement 7. Battery Charging and Replacement 7. 1 How to charge battery # DANGER Use the special cord supplied with this instrument only. Firmly connect the Power Cord to an outlet. Never connect it to a device on which electrical potentials higher than AC240V exist. Handling and storage instructions specified by the battery manufacturer should be observed. # WARNING Connect the Power Cord to the instrument first. Cord to be firmly inserted.
7. Battery Charging and Replacement 7. 2 KEW3128 How to Replace Battery # DANGER Never open the Battery Compartment Cover while making a measurement. # WARNING To avoid possible electric shock, remove test leads before opening the Battery Compartment Cover. After replacing battery, be sure to tighten up the screw for Battery Compartment Cover. # CAUTION Install a battery in correct polarity as marked inside. ① Remove the Power Cord from the instrument.
KEW3128 7. Battery Charging and Replacement ④ Pull out the Tray toward, and take the battery out. ⑤ Pull up the Battery Connectors upward as indicated by arrow mark in the below left illustration, and remove them. + (positive) red ⑥ - (negative) black Remove the old battery and install a new one (rechargeable lead storage battery PXL-12050: 12V 5Ah).
8. Communication Function/ Supplied Software KEW3128 8. Communication Function/ Supplied Software ● Interface USB communication is possible by using this instrument with the supplied USB Adapter (M-8212). Communication method: USB Ver1.1 Followings can be done by USB communication: * 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.
KEW3128 8. 1 8. Communication Function/ Supplied Software How to install the Software Followings are the instructions to install the software“KEW Windows”and “KEW Windows for KEW3128”. 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.
8. Communication Function/ Supplied Software KEW3128 ③ Read through and understand the License Agreement, and check“I accept….”. Then click“Next”. ④ Enter the user information and specify the location to where install the software. Then click“Next”.
KEW3128 8. Communication Function/ Supplied Software ⑤ Confirm the information on install, and click“Install”to start installing. ⑥ Click“Finish”when install completes.
8. Communication Function/ Supplied Software ⑦ KEW3128 An installation of“KEW Windows for KEW3128”is followed by the installation of“KEW Windows”. ● To install the“KEW Windows for KEW3128", 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.
KEW3128 8. 2 8. Communication Function/ Supplied Software How to start “KEW Windows for KEW3128” ● 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“KEW3128”on the list, and then click“Next”. Then a main menu for“KEW Windows for KEW3128”appears. Click [Data Download] or [Instrument Setting].
9. Accessories KEW3128 9. Accessories 9. 1 Metal parts for Line Probe, and replacement Metal Parts Standard, Hook Type: To be used to hook the instrument. （Shipped out with being attached to the Line Probe） MODEL 8029: Tip metal, Straight Type（accessory） ① How to replace the metal parts 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.
KEW3128 10.Disposing the Product 10. Disposing the Product Waste Electrical and Electronic Equipment (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.
Contents KEW3128 KEW3128 MEMO 82 KEW3128
KEW3128 MEMO KEW3128 83
DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations.
