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Kewtech KEW4200 Digital TRMS Earth Resistance Clamp
  • Kewtech KEW4200 Digital TRMS Earth Resistance Clamp
  • Kewtech KEW4200 Digital TRMS Earth Resistance Clamp
  • Kewtech KEW4200 Digital TRMS Earth Resistance Clamp

Kewtech KEW4200 Digital TRMS Earth Resistance Clamp

Kewtech Approved distributor.

Includes: Resistor for operation check, Batteries, Hard carry case, Instruction manual, Certificate of conformity.

£699.30 Save 30%
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The Kewtech KEW4200 can measure the earth resistance by simply clamping around the earthed wires. This instrument also has a AC current function to measure current up to 30A the same as traditional leakage clamp meters.


True RMS for highly accurate readings.
Measures earth resistance without auxiliary earth spikes.
Measures earth resistance from 0.05 to 1200Ω.
Noise check function.
Memory function saves up to 100 measurements.
Data hold memory function.
Buzzer function.
Back light.

KEW4200 Digital Earth Resistance Clamp Tester

Kewtech KEW4200 Specifications
Function Range Resolution Measuring Range Accuracy
Earth resistance 20 Ω 0.01 Ω* 0.00 ~ 20.00 Ω ±1.5% ±0.05 Ω
Auto Range 200 Ω 0.1 Ω 16.0 ~ 99.9 Ω
100.0 ~ 209.9 Ω
±2% ±0.05 Ω
±3% ±2 Ω
Auto Range 1200 Ω 1 Ω 160 ~ 399 Ω
400 ~ 599 Ω
±5% ±5 Ω
±10% ±10 Ω
Auto Range 1200 Ω 10 Ω 600 ~ 1260 Ω  
AC Current 100 mA 0.1 mA 0.0 ~ 104.9 mA ±2% ±0.7 Ω
[50Hz/60Hz] 1000 mA 1 mA 90 ~ 1049 mA  
Auto Range 10 A 0.01 A 0.80 ~ 10.49 A ±2%
  30 A 0.1 A 8.0 ~ 31.5 A  
Earth resistance function: Constant voltage injection
Current detection (Frequency: approx 2400 Hz)
Dual Integration
AC current function: Successive Approximation
“OL” is displayed when input exceeds the upper limit of a measuring range.
Response time Approx. 7 seconds (Earth resistance) Approx 2 seconds (AC current).
Sample rate Approx. 1 times per second.
Power source DC6VL R6P (size AA manganese battery) x4 or LR6 (size AA alkaline battery) x4.
Approx 12 hours (when R6P is used)
Approx 24 hours (when LR6 is used).
Auto power-off Turns power off about 10 minutes after the last button operation.
Reading Type TRMS Ohms range uses rolling average.
IEC 61010-1: “001 (CAT.IV 300 V Pollution degree 2)
AC5320Vrms / 5 seconds
Between the transformer jaws fitted parts and case enclosure (except for jaws).
Conductor Size Approx. 32 mm.
Dimensions 246(L) x 120(W) x 54(D) mm.
Weight Approx. 780g (including batteries).
Kewtech KEW4200 warranty Two-years.
* 4 counts or less are corrected to 0.


Kewtech KEW4200 Datasheet

PDF Specifications of the Kewtech KEW4200 True RMS Earth Resistance Clamp Meter.

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Kewtech KEW4200 Digital TRMS Earth Resistance Clamp

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