The Fluke 1625-2 is a unique earth ground tester that can perform all four types of earth ground measurement which are shown in the features section below. The testers are also easy to use. For each test, the testers inform you which stakes or clamps need to be connected and the large rotary switch can be used even with a gloved hand.

Testing with Stakes:
The Fluke 1625-2 supports all of the common ground testing measurement methods using 3-pole and 4-pole earth resistance measurement techniques. It also has R measurement, calculating the earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to-earth ground would see.

Stakeless testing:
The Fluke 1625-2 earth ground testers are able to measure earth ground loop resistances using only clamps. With this test method, two clamps are placed around the earth ground rod and each are connected to the tester. No earth ground stakes are used at all. A known, fixed voltage is induced by one clamp and the current is measured using the second clamp. Then the tester automatically determines the resistance of the earth ground rod.

This test method only works if a bonded earth ground system exists for the building or structure under test, but most are. If there is only one path to ground, like at many residential applications, the Stakeless method will not provide an acceptable value and the Fall of Potential test method must be used.

With Stakeless testing, the earth ground rod does not need to be disconnected—leaving the bonded earth ground system intact during test. Gone are the days of spending time placing and connecting stakes for each earth ground rod on your system—a major time saver. You can also perform earth ground tests in places you’ve not considered before: inside buildings, power pylons, or anywhere you don’t have access to soil.

Features:

• 3-pole and 4-pole Fall of Potential, earth resistance loop testing
• 4-pole Soil Resistivity testing
• Selective earth ground rod testing using 1 clamp
• Stakeless earth ground rod testing using 2 clamps
• IP56 rated for outdoor use
• USB data storage and transfer

Supplied with:

• Software and Documentation on USB stick
• User Manual and Quick Reference Guide
• 1x EI-162AC Inducing Current Transformer
• 1x EI-162X Sensing Current Transformer
• 4x Earth Stakes and Screws
• Red and Black Test Leads 1m
• Red and Black Alligator Clips
• 1623/25 Probe Cable
• 6x AA Batteries (installed)
• C1620 Professional Carrying Bag
• Transit Case