PRODUCTS

Model MET-2 (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 20A ranges. Data memory and auto power off function. 10Ω and 300Ω earth resistance ranges.
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DETAIL

SPEC SPECIFICATIONS Measuring function : Earth Resistance, AC Current (Load and Leakage) Measuring method : Dual slope integration mode 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 Display : LCD, 16 letters/characters × 2 lines with contrast adjuster Over range indication : "OVER" on LCD Low battery indication : "B" mark on LCD Data hold indication : "DH" mark on LCD Memory function : 40 measuring data can be stored and displayed Accuracy : (23℃ ± 5℃, 80% RH or less) Earth resistance : Range Resolution Accuracy 10Ω 0.01Ω 0.1～1Ω :±0.1Ω 1～10Ω :±0.5Ω 300Ω 0.1Ω 10～50Ω :±2.0Ω 50～150Ω :±5.0Ω 150～200Ω :±20Ω 200～300Ω :±30Ω AC current : Range Resolution Accuracy 200mA 0.1mA 3% rdg ± 8dgt 2000mA 1mA 2% rdg ± 8dgt 20A 0.01A 2% rdg ± 8dgt Measurement CT : φ34mm with 2.5m lead Injection CT : φ34mm with 2.5m lead, Auto sweep 4KHz～200kHz Injection signal level : Approx. 320mVp-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 : AC200V～240V (50/60Hz) Auto power off function : Approx. 5 minutes later after power on Power consumption : Approx. 380mA(Earth resistance measurement) Battery life : Approx.400 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 Subsidiary lead wire : 1 Instruction manual : 1 Optional accessory : Subsidiary lead wire