Instruction ManualEarth Resistance/ Earth Resistivity TesterKEW 4106
63. FeaturesKEW4106 is a 2/ 3/ 4-Wire Digital Earth Resistance/ Earth Resistivity Tester equipped with a microcomputer and can measur
74. Specification● Applicable Standards IEC 61010-1 Measurement CAT.III 300V, CAT.IV 150V Pollution degree 2 IEC 61010-031 Standard for hand
8● Measuring method for Earth Resistance Fall-of-potential method (currents and voltages measured via the Probes)● Measurement method of Earth Resist
9● Dimension 167(L) x 185(W) x 89(D)mm● Weight approx 900g (including batteries)● Power source DC12V : sizeAA manganese dry battery (R6P) x 8 pcs *
105. Instrument Layout● Instrument body and Connector① LCD② ENTER/SAVE Key ③ ESC Key ④ MENU Key ⑤ Backlight Key ⑤ Cursor Key ⑥ TEST Button⑦
11● LCD Indications● Accessories Precision Measurement Test Leads MODEL7229 (red 40m, yellow 20m, black 20m, green 20m)# DANGER● Do not connect the
12 Auxiliary Earth Spike MODEL8032 x 2 sets (4 spikes in total) Cord Reel MODEL8200-04 x 1set (4reels in total) (for MODEL7229) Optical Adaptor M
136. Marks and Messages displayed on the LCDFollowing marks and messages are displayed while measurements.Marks and Messages DetailsBattery voltage is
147. Measurement Principle7-1 Principle of Earth Resistance MeasurementsThis instrument makes earth resistance measurements with fall-of-potenti
158. Preparation for Measurement8-1 Battery Voltage CheckPower on the instrument. If the display is clear without the Low battery mark " "
16Settings of following parameters can be made on this instrument ● Wire : Measurement method (Wiring System)● Freq : Measurement frequency ● Site
17Selecting a desirable frequency with the Cursor Key, and pressing the “ “ Key returns to the “CONFIG_SETTING” Screen (Fig.12) with the selected fr
188-2-5 Setting for the interval between Auxiliary Earth Spikes at Earth Resistivity (ρ) MeasurementsMaking setting of the intervals between
19Time Setting can be done in following procedure.Select “Date/Time” with the Cursor Key on the CONFIG_SETTING Screen, and press the “ ” Key to
20(2) Date Setting Date is displayed in the following order: Month/ Day/ Year. Put the cursor on “Date” and press the “ ” Key to display the
218-2-7 Setting for the residual resistance (Rk) on the Test LeadsThis instrument can store the residual resistance (Rk) of the Test Leads
22Following message appears and shows that the data cannot be saved when the “ ” Key is pressed with above display.Note) Following message appears
238-5 Series Interference Voltage (Earth Voltage) MeasurementMeasurements are automatically started during a measurement of earth resistances
249. Measurement Method# DANGER● No voltage should be applied between the measuring terminals at earth resistance measurements.9-1 Earth Resistance M
259-1-1 Precise Measurement (3-Wire) * with Earth Test Leads MODEL 7229This is a standard method to measure earth resistances. The measured earth resi
Contents1. Safety Warnings ...12. How to store the Cov
26(4) Earth Resistance Measurement Select a Range (any Range is ok) when the connection is done, and press the TEST Button. A message
27# DANGERThe Re measurement cannot be made when a warning message “Voltage High!!” like shown in Fig.37 appear on the LCD. Voltages more than 15V exi
28(2) Setting of Rk The measured results obtained at 4-Wire system are not be influenced by the Test Leads Connected to the “E” Terminal,
29Note) If a message “ ” or “ ” appear on the LCD, auxiliary earth resistance is too high to make measurements. Recheck the connection
30(1) Setting of Wiring System Select “Wire (2)” with reference to “8-2-2 Setting for Measurement Method” in this manual.(2) Setting of Rk
31(5) Measured resistances at simplified measurements Two-Wire method is used for the simplified measurements. In this method, earth res
32 (e.g. The spike should be stuck in the depth of 25cm or less when the interval of the Auxiliary Earth Spikes is 5m.) If the Spikes stuck
33 Pressing the Cursor Key “ ” displays parameters like shown in Fig.43. Press the “ ” Key to return to the Main Screen. If
3410. Store/ Recall the Measurement ResultsMeasurement conditions and measured results can be saved in the memory of the instrument. (max 800)The sto
3510-2 How to recall the saved dataThe saved data can be displayed on the LCD according to following sequence.Press the “ ” Key on the Ma
9. Measurement Method ... 24 9-1 Earth Resistance Measurement ...
36Pressing the “ ” or “ ” Key while the cursor is on the “Cancel” returns to the Review Screen without deleting data.Put a cursor to “Delete”
37Press the “ ” Key to return to the Review Screen without deleting data. Press the “ ” Key to delete the whole data. Then a following message is d
3811. Battery and Fuse Replacement# DANGER● Never attempt to replace batteries while making measurements. When replacing the Fuse, use the one with s
39SPARE FUSESCREWFUSEBATTERYFig. 61
4012. Case and Shoulder strap AssemblyBy hanging the instrument around the neck, both hands will be let free for testing.Pass the Shoulder strap
4113. Before Sending for ServiceIf this instrument should fail to operate correctly, return it to your nearest Distributor stating the
42● Incapable of measuring earth resistance Voltages of 20V or more are being applied between the “E“ and “S(P)”Terminals. (Fig.68) The upper limit
43● Incapable of saving data The LCD reads as shown in Fig.73.The memory capacity is full. (800 data) To save new data, old data should be deleted fi
1-09 92-1962ADISTRIBUTORKyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligati
11. Safety WarningsThis instrument has been designed, manufactured and tested according to IEC 61010: Safety requirements for Electronic
2# DANGER● Never make measurement on a circuit in which electrical potentials exceeding AC/DC300V exist.● Do not attempt to make measu
3# CAUTION● Set and check the Range switch to the appropriate position before making measurement. ● Set the Range switch to “OFF” pos
4SymbolsCAT.IVThe circuit from the service drop to the service entrance, and to the power meter and primary overcurrent protection d
52. How to store the CoverThis instrument has a dedicated Cover to protect against impacts from the outside and prevent the instrument
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