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The Extech 382152 Earth Ground Resistance Tester can measure resistance (in 3 ranges) and AC voltage to 200V. 2mA constant current test signal permits earth resistance tests without tripping current breakers in the circuit under test. Single, momentary tests or automatic 3-minute tests can be selected. This device was designed to meet IEC-1010 (EN 61010) safety standards. Specifications. Measurements: Earth ground resistance (in 3 ranges) and AC voltage to 200V. Display: 3-1/2 digit (1999 count) LCD with LED test status indicator. Data hold: Freezes latest reading on the LCD display. Automatic Test: 3 minute test timer with automatic power down. Measurement triggers: Momentary test or 3 minute test with lock function. Over-range indication: '1' displayed as most significant digit. Earth Ground Resistance 2 mA test current (820 Hz) Range: 20, 200, 2000 ohm. Resolution: 0.01, 0.1, 1 ohm. Accuracy: ± (2% rdg + 2 d) or ± 0.1 ohm whichever is greater. Earth Voltage Frequency: 40 to 500 Hz Range: 0 to 200 VAC. Resolution: 0.1V. Accuracy: ± (1% rdg +2d).
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