Product overview: Fluke 1623-2 GEO earth tester

Clamp-free measurement.

The Fluke 1623-2 earth tester can measure earth loop resistances using only clamps. With this method, two clamps are placed around the earth rod and each is connected to the tester. No earth spikes are used.

One clamp induces a known fixed voltage, while the other measures the current. The tester then automatically determines the earth rod resistance. This measurement method only works if the building or structure where the measurement is taken has an earth system, which most do. If there is only one earth path, as in many residential applications, the clamp-free method will not provide an acceptable value and the fall-of-potential test method should be used.

With the clamp-free method, it is not necessary to disconnect the earth rod, so the existing earth system is not disturbed during measurement. There is no longer a need to spend time placing and connecting spikes for each earth rod in the system, saving a lot of time. You can also perform earth measurements in places you might not have considered before: inside buildings, on high-voltage towers, or anywhere without direct contact with the ground.

The most complete tester

The Fluke 1623-2 model is a unique earth tester capable of performing four types of earth measurements.

Main features:

• Fall-of-potential test with 3 and 4 poles (using spikes).
• Soil resistivity test with 4 poles (using spikes).
• Selective test (using 1 clamp and spikes).
• Clamp-free test (using only 2 clamps).