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Kewtech KEW4200 Digital TRMS Earth Resistance Clamp
Includes: Resistor for operation check, Batteries, Hard carry case, Instruction manual, Certificate of conformity.
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.
FEATURES
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 | |||
Operating System |
Earth resistance function: Constant voltage injection Current detection (Frequency: approx 2400 Hz) Dual Integration AC current function: Successive Approximation |
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Over-range indication |
“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. | ||||
Current consumption |
Approx 12 hours (when R6P is used) Approx 24 hours (when LR6 is used). |
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Auto power-off | Turns power off about 10 minutes after the last button operation. | ||||
Reading Type | TRMS Ohms range uses rolling average. | ||||
Applicable Standards |
IEC 61010-1: “001 (CAT.IV 300 V Pollution degree 2) | ||||
Withstand voltage |
AC5320Vrms / 5 seconds Between the transformer jaws fitted parts and case enclosure (except for jaws). |
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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. |
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