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MS5209 Earth resistance tester
﹒Measurement range:
Earth resistance:10/100/1000Ω
Earth voltage:30V AC(5KΩ/V approx.)
Earth resistance:Within±5% of full scale
Earth voltage: Within±5% of full scale
﹒Measurement system
Earth resistance by constant current inverter 800Hz approx.2mA
Earth voltage by rectifier type 5KΩ/V approx.40~500Hz
﹒Withstand voltage
1500V AC for one minute between electrical circuit and housing case
﹒Self-check facility
Lead wire connection to C and P terminals and proper auxiliary earth resistance can be checked by 
pressing″BATT.CHECK″button, ″OK″lamp is illuminated.