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The Ideal 61-920 is a digital clamp-on ground resistance tester. It can measure the ground resistance
by simply clamping around the ground conductor, ground rod or equipment ground conductor. The 61-920 also measures leakage AC current up to 30 AAC. It has a liquid crystal display with a maximum count of 2099.
Specifications.
Earth resistance (Auto-ranging).
Range 20Ω;
Measuring range 0.00 to 20.99Ω: Resolution 0.01Ω, Accuracy ±1.5% ±0.05Ω.
Range 200Ω;
Measuring range 16.0 to 99.9Ω: Resolution 0.1Ω, Accuracy ±2% ±0.5Ω.
Measuring range 100.0 to 209.9Ω: Resolution 0.1Ω, Accuracy ±3% ±2Ω.
Range 1200Ω;
Measuring range 160 to 399Ω: Resolution 1Ω, Accuracy ±5% ±5Ω.
Measuring range 400 to 599Ω: Resolution 1Ω, Accuracy ±10% ±10Ω.
Measuring range 600 to 1260Ω: Resolution 10Ω.
AC current (ACA) (sine wave) (50Hz/60Hz) (Auto ranging).
Range 100 mA;
Measuring range 0.0 to 104.9 mA: Resolution 0.1 mA, Accuracy ±2% ±0.7 mA.
Range 1000 mA;
Measuring range 80 to 1049 mA: Resolution 1 mA, Accuracy ±2%.
Range 10 A;
Measuring range 0.80 to 10.49 A: Resolution 0.01 A, Accuracy ±2%.
Range 30 A;
Measuring range 8.0 to 31.45 A: Resolution 0.1 A, Accuracy ±2%.
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