Earth ground tester

The Fluke 1625 GEO earth ground testers offer stackless testing to make earth ground loop resistance testing quicker and easier. There is no need for a separate earth ground clamp.

The tester is intended for electrical utility or other high-frequency environments as it has extra versatility for more demanding applications.

It is a distinctive earth ground tester that can perform all four types of earth ground measurement. It not only measures ground resistance, using the ‘fall of potential test, but also enables testing using the ‘selective’ and ‘stakeless’ methods.

Selective testing does not require the electrode under test to be disconnected during the measurement. The stakeless method quickly checks ground connections using two current transformers (probes) clamped around the ground conductor under test.

Features include: automatic frequency control — identifies existing interference and chooses a measurement frequency to minimise its effect, providing a more accurate earth ground value; R* measurement — calculates earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to-earth ground would see; and adjustable limits — for quick test result verification.