User's Manual
Earth Ground Resistance Tester
Model 382152
Introduction
Congratulations on your purchase of the Extech Earth Ground Resistance Tester. This
device 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.
Earth Ground Resistance Testers are useful for:
• Estimating ground resistance of a proposed substation or transmission tower.
• Computing inductive coupling between neighboring power and communication
circuits.
• Designing cathode protection systems.
• Geological surveys.
Careful use of this meter will provide years of reliable service.
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