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The Amprobe AMB-4D 1000V Digital Megohmmeter Insulation Resistance Tester tests insulation of wires, cables, transformers and motors. Insulation resistance with 250 VDC ± 12.5V test voltage ranges: 0 to 200M-ohm, Accuracy: ± 3% Rdg + 2 LSD. Insulation resistance with 500 VDC ± 25V test voltage ranges: 0 to 200M-ohm, Accuracy: ± 3% Rdg + 2 LSD. Insulation resistance with 1000 VDC ± 50V test voltage ranges: 0 to 2000M-ohm, Accuracy: ± 3% Rdg + 2 LSD (0 to 1000 M-ohm), ± 3.5% Rdg + 3 LSD (1000 to 2000 M-ohm). Current Drain: 65 mA maximum on Megohm, 17 mA on ohm. Responce Time: less than 5 seconds.
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