Kewtech KEW4200 Digital TRMS Earth Resistance Clamp

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 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). 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). 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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