
• The latest circuit design permits the instrument to operate
with the minimum of influence from earth voltage
and earth resistance of auxiliary earth spikes.
• Dust and drip proof. (designed to IEC 529 IP54)
• Earth resistance value can be read directly from the scale.
• Designed to meet IEC 61010-1 safety standard.
• Capable of measuring earth voltage.
• Small and lightweight. Shock resistant new case material.
• 2mA measuring current permits earth resistance tests
without tripping earth leakage current breakers
in the circuit under test.
• Lead wire connection to C and P terminals and proper
auxiliary earth resistance can be checked by "OK" lamp.
Lead wire connection to C and E terminals is good
when "OK" lamp is illuminated.

• Dust and drip proof.(designed to IEC 529 IP54)
• In addition to the facility for precision measurement, test leads for simplified two wire easuring system also supplied as standard accessories.
(unit can be hung from the neck for simplified measurement)
• Designed to meet IEC 61010-1 safety standard.
• Capable of measuring earth voltage.
• Automatic warning when resistance of auxiliary earth spikes is in excess of tolerance.
• Small and lightweight. Shock resistant new case material.
• 2mA measuring current permits earth resistance tests without tripping earth leakage current breakers in the circuit under test.

KEW 4300 is simplified earth resistance tester
(based on 2-pole method)
• 200/2000Ω (2 ranges): auto-ranging.
• Warning buzzer triggered at 100Ω or less.
• LED lights up when a large earth voltage is detected.
• Live circuit warning when 30V or higher voltage is detected.
(KEW 4300 detects voltage even when measuring resistances.)
• LED light for illuminating measurement points.
(It turns on/off automatically in relation to the ambient brightness.)
• Small test current (max 2mA) not triggering RCD.

Earth Resistance Measurements with 4, 3 and 2 Wires
Earth Resistivity (ρ) Measurement using WENNER method

• The earth resistance from 0.05 to 1500Ω can be measured without the auxiliary earth spikes. (The Multiple Earthing System.)
• True RMS
Accurate true RMS readings of AC current including distorted waveform from 1mA to 30.0A
• Noise Check Function
A function to detect current, which effects on an earth resistance measurement and display "NOISE" mark on the LCD.
• Memory function
Save and display up to 100 measurement data.
• Data hold function / Buzzer function / Back light function
• Compliant with Safety Standards of IEC 61010-1 : CAT IV 300V Pollution degree2

Various useful functions are available on Android devices using Bluetooth communication
• Real time measurements can be transferred, shown and saved on Android device (up to 100 measurements)
• Saved data includes measurement, GPS location and date & time
Easy to check on map "When" and "Where" the measurement was made
• Comparator function on Android device informs when the measured value is lower/higher than the preset value
Earth /Ground resistance and Leakage current measurement functions
• The earth resistance from 0.05 to 1500 Ω can be measured without the auxiliary earth spikes in multi-earthing systems
• True RMS leakage or phase current readings from 0.1mA to 30.0A provides vital additional information in earthing networks
• Filter function offers increased immunity to electrical noise and a Noise mark appears in excessively high noisy environments

| Rated voltage | 500V | 1000V | 2500V | 5000V | 10000V | 12000V |
|---|---|---|---|---|---|---|
| Max measurement value | 500GΩ | 1TΩ | 2.5TΩ | 5TΩ | 35TΩ | |
| Accuracy | 400k~50GΩ ±5%rdg±3dgt (*) |
800k~100GΩ 5%rdg±3dgt | 2M~250GΩ ±5%rdg±3dgt | 4M~500GΩ ±5%rdg±3dgt | 8M~1TΩ ±5%rdg±3dgt | |
| 50G~500GΩ ±20%rdg (*) |
100G~1TΩ ±20%rdg |
250G~2.5TΩ ±20%rdg |
500G~5TΩ ±20%rdg |
1T~10TΩ ±20%rdg |
||
| 10T - 35TΩ Values are displayed, but accuracy isn't guaranteed |
||||||
| Short circuit current | Max 5.0mA | |||||
| Load resistor to output rated voltage | 0.5MΩ or more | 1MΩ or more | 2.5MΩ or more | 5MΩ or more | 20MΩ or more | 24MΩ or more |
| Rated voltage | 500V | 1000V | 2500V | 5000V | 10000V | 12000V |
|---|---|---|---|---|---|---|
| Monitor accuracy | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V |
| Output accuracy | 0 - +20% | 0 - +10% | 0 - +10% | 0 - +10% | -5 - +5% | -5 - +5% |
| Selectable range | 50 - 600V (in steps of 5V) |
610 - 1200V (in steps of 10V) | 1225 - 3000V (in steps of 25V) | 3050 - 6000V (in steps of 50V) | 6100 - 10000V (in steps of 100V) |
10100 - 12000V (in steps of 100V) |
| Measuring range | DCV:±30 ~ ±600V、ACV:30 ~ 600V (50/60Hz) |
|---|---|
| Accuracy | ±2%rdg±3dgt |
| Measuring range | 5.00nA - 2.40mA (Depending on the insulation resistance) |
|---|
| Measuring range | 5.0nF ~ 50.0μF (500V/1000V/2500V/5000V) |
5.0nF - 1.0µF (display range: 5.0nF - 50.0µF) (10000V/12000V) |
|---|---|---|
| Accuracy | ±5%rdg±5dgt | |
| Applicable standards | IEC 61010-1 CAT IV 600V Pollution degree 2, IEC 61010-031, IEC 61326, IEC 60529 (IP64): with the lid closed. |
|---|---|
| Operating temperature & humidity range | -10ºC - Relative humidity 85% or less 50ºC /(when operating with an external power supply, no condensation) 0ºC - 40ºC /Relative humidity 85% or less (when operating with battery, no condensation) |
| Storage temperature & humidity range | -20ºC - 60ºC / Relative humidity 75% or less (no condensation) |
| Power source | Rechargeable Lead storage battery (12V)* Charging time: approx. 8 hours / AC Power supply (100V - 240V, 50/60Hz) * Continuous measuring time: approx. 4 hours (a load of 100MΩ at the Insulation resistance 12000V Range.) approx. 2 hours (Max current consumption in range while rated currents are maintained.) |
| Dimensions | 330 (L) × 410 (W) × 180 (D) mm *Instrument and Hard case |
| Weight | 9kg approx. (including battery) *Instrument and Hard case |
| Included Accessories | 7170 (Main cord), 7224A (Earth cord), 7225A (Guard cord), 7226A (Line probe), 7227A (Line probe with alligator clip), 8029 (Extension prod), 8212-USB-W (USB adaptor with KEW Windows (Software)), Instruction manual |
| Optional Accessories | 7254 (Longer Line probe with alligator clip) |

| Range | 500V | 1000V | 2500V | 5000V | |
|---|---|---|---|---|---|
| Accuracy | 0.0 - 99.9MΩ 100 - 999MΩ |
0.0 - 99.9MΩ 100 - 999MΩ 1.00 - 1.99GΩ |
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 100 - 1000GΩ (1TΩ) |
|
| ±5%rdg±3dgt | ±5%rdg±3dgt | ±5%rdg±3dgt | ±5%rdg±3dgt ±20%rdg (100GΩ or more) |
||
| Short circuit current | Max. 5mA | ||||
| Rated test Current | 1mA to 1.2mA at 0.5MΩ load |
1mA to 1.2mA at 1MΩ load |
1mA to 1.2mA at 2.5MΩ load |
1mA to 1.2mA at 5MΩ load |
|
| Open circuit voltage | 500VDC +30% -0% |
1000VDC +20% -0% |
2500VDC +20% -0% |
5000VDC +20% -0% |
|
| Maximum display | 999 Counts (1000 counts only at 1000GΩ) | ||||
| Current consumption | 1000mA approx. (During measurement) | ||||
| Measuring range | 30 - 600V AC/DC (50/60Hz) |
|---|---|
| Accuracy | ±2%rdg±3dgt |
| Test voltage | 500/1000/2500/5000V |
|---|---|
| Measuring ranges | 0.0 - 99.9MΩ, 100 - 999MΩ (500V) 0.0 - 99.9MΩ, 100 - 999MΩ, 1.00 - 1.99GΩ (1000V) 0.0 - 99.9MΩ, 100 - 999MΩ, 1.00 - 9.99GΩ, 10.0 - 99.9GΩ (2500V) 0.0 - 99.9MΩ, 100 - 999MΩ, 1.00 - 9.99GΩ, 10.0 - 99.9GΩ, 100 - 1000GΩ (1TΩ) (5000V) |
| Accuracy | ±5%rdg±3dgt (500/1000/2500V) ±5%rdg±3dgt, ±20%(100GΩ or more) (5000V) |
| Short circuit current | Max. 5mA |
| Rated test current | 1mA to 1.2mA at 0.5MΩ load (500V) 1mA to 1.2mA at 1MΩ load (1000V) 1mA to 1.2mA at 2.5MΩ load (2500V) 1mA to 1.2mA at 5MΩ load (5000V) |
| Open circuit voltage | 500VDC+30%, -0% (500V) 1000VDC+20%, -0% (1000V) 2500VDC+20%, -0% (2500V) 5000VDC+20%, -0% (5000V) |
| Maximum display | 999 Counts (1000 counts only at 1000GΩ) |
| Current consumption | 1000mA approx. (During measurement) |
| Measuring ranges | 30 - 600V AC/DC (50/60Hz) |
|---|---|
| Accuracy | ±2%rdg ±3dgt |
| Maximum display | 630 Counts |
| Current consumption | 110mA approx. |
| Applicable standards | IEC 61010-1 CAT III 600V Pollution degree 2 IEC 61010-031, IEC 61326 |
|---|---|
| Power source | DC12V : LR14×8 pcs. |
| Dimensions | 205(L) × 152(W) × 94(D)mm |
| Weight | 1.8kg approx. |
| Included Accessories | 7165A (Line probe), 7224A (Earth cord), 7225A (Guard cord) 8019 (Hook type prod), 9159 (Hard case) LR14 (Alkaline battery size C) × 8, Instruction manual |
| Optional Accessories | 7168A (Line probe with alligator clip) 7253 (Longer Line probe with alligator clip) 8302 (Adaptor for recorder) |
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