ERICO EST401 ERITECH Clamp-on Ground Resistance Tester - Manual (Page 7)

5 www.erico.com
Electrical Specifications
Ground Resistance
Measurement Range Resolution Accuracy*
Range
0.1 to 1.00Ω 0.01Ω ± (2% R ± 0.02Ω)
1.0 to 50.0Ω 0.1Ω ± (1.5% R ± 0.1Ω)
Autoranging 50.0 to 100.0Ω 0.5Ω ± (2.0% R ± 0.5Ω)
0.01Ω to 1200Ω 100 to 200Ω 1Ω ± (3.0% R ± 1Ω)
200 to 400Ω 5Ω ± (6.0% R ± 5Ω)
400 to 600Ω 10Ω ± (10% R ± 10Ω)
600 to 1200Ω 50Ω Approx. 25% ± 50Ω
Ground or Leakage Current
Measurement Range Resolution Accuracy*
Range
Autoranging
1 to 299mA 1mA ± (2.5% R + 2mA)
1mA to 30.00A rms
0.300A to 2.999A 0.001A ± (2.5% R + 2mA)
3.00A to 29.99A 0.01A ± (2.5% R + 20mA)
R = Reading
* Reference conditions: 23°C ± 3K, 50% RH ± 10%, battery at 8V ± 0.2V, external
magnetic field < 40A/m, external electrical field < 1V/m, conductor centered, loop
resistance noninductive. Accuracy % of Reading, Frequency: 50/60Hz.
Resistance Measurement Frequency: 2403Hz
Voltage Generated into the Loop: Approx. 60mV rms
Resistance Overload: OL displayed above 1200Ω
Current Measurement Frequency: 47 to 800Hz
Influence of Frequency: Add 7.5% to the reference specification
Current Overload: OL displayed above 29.99A rms
E1154IS06 EST401_5.qxd:E1154IS06 9/25/06 1:46 PM Page 5