The Fluke 1625 is a distinctive earth ground tester that can perform all four types of earth ground measurement. Specifically, the Fluke 1625 testers is able to measure earth ground loop resistances using only clamps – called Stakeless testing. This method doesn't require the use of earth ground stakes or the disconnection of ground rods.
Features:
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3- and 4-pole earth ground measurement
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4-Pole soil resistivity testing
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2-pole resistance measurement AC
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2- and 4-pole resistance measurement DC
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Selective testing, no disconnection of ground conductor (1 clamp)
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Stakeless testing, quick ground loop testing (2 clamps)
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Earth impedance measurement at 55 Hz
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Automatic frequency control (AFC) (94, 105, 111, 128 Hz)
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Measuring voltage switchable 20/48V
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Programmable limits, settings
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Continuity with buzzer