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Model MET-1 (CE) Simple earth resistance measurements without auxiliary rods and test leads.
FEATURES Test frequencies are selected automatically to minimize erroneous measurements. Earth resistance measurements for secondary side of the extra-high voltage transformer, equipotential bonding conductors and both single and multi-grounded systems. Leakage current and load current measurements with 200mA, 2000mA and 10A ranges. Data hold and auto power off function. 200Ω earth resistance range.
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DETAIL

SPEC SPECIFICATIONS Measuring function : Earth Resistance, AC Current (Load and Leakage) Measuring method : Dual slope integration mode Display : LCD, 16 letters/characters × 2 lines with contrast adjuster Safety standard : IEC 61010-1, IEC61010-2-032 Installation categoryII, 600V or CATⅢ 300V Sampling : Approx. 2 times/sec. for AC current Measuring time : Approx. 30 second for earth resistance Over range indication : "OVER" on LCD Low battery indication : "B" mark on LCD Data hold indication : "DH" mark on LCD Range and Accuracy : (23℃ ± 5℃, 80% or less) Earth resistance : Range Resolution Accuracy 200Ω 0.1Ω 0 ～ 10Ω : ±0.2Ω 10 ～ 50Ω : ±1.0Ω 50 ～200Ω : ±5.0Ω AC current : Range Resolution Accuracy 200mA 0.1mA 2% rdg ± 8dgt 2000mA 1.0mA 2% rdg ± 8dgt 10A 0.01mA 2% rdg ± 8dgt Measurement CT : φ34mm with 2.5m lead Injection CT : φ34mm with 2.5m lead, Auto sweep 4KHz～400KHz Injection signal level : Approx. 160mVp-p Storage temperature : -10℃～60℃, < 80% (without condensation) Operating temperature : 0℃～40℃, < 80%RH ( without condensation) Limitation of circuit voltage : Less than 600V Withstanding voltage : AC 3700V, 1 minute( between CT core and outer case) Insulation resistance : More than 100MΩ (between CT core and outer case) Power supply : Ni-Cad battery (1.2V × 5) Battery charger : AC100V～240V (50/60Hz) Auto power off function : Approx.5 minutes later after the power switch on Battery life : 450 times measurements under full charged condition (Subject to the times of charging and discharging) Size and weight : Measurement CT : 90.5(W)×165(H)×38(D)mm, approx.460g Injection CT : 90.5(W)×165(H)×38(D)mm, approx.440g Main unit : 190(W)×140(H)×42 (D)mm, approx.800g Accessories : Measurement CT : 1 Injection CT : 1 Battery charger : 1 Carrying case : 1 Instruction manual : 1 Optional accessory : Subsidiary lead wire