Electrical Power & Protection


Stakeless earth ground loop testing

May 2018 Electrical Power & Protection

Testing the grounding components of equipment in hard to reach spaces, including areas that are indoors or fully paved and do not permit driving auxiliary test stakes, is challenging. Comtest now offers the Fluke 1630-2 FC Stakeless Earth Ground Clamp, a high-quality, heavy-duty clamp jaw that stays in alignment and in calibration even in industrial environments. Identifying ground loop resistance without the need to disconnect and then reconnect the earth electrode from the system, is also now possible.

Stakeless measurement

The 1630-2 FC clamp measures earth ground loop resistances for multi-grounded systems using the dual-clamp jaw. This test technique eliminates the dangerous and time-consuming activity of disconnecting parallel grounds, as well as the process of finding suitable locations for auxiliary test stakes. Users can also perform ground tests in places that were previously difficult: inside buildings, on power pylons or anywhere there is no access to soil to place auxiliary test stakes.

Fluke Connect Wireless System

The 1630-2 FC supports the Fluke Connect Wireless System, which connects the clamp with an app on a smartphone or tablet. The app shows the ground resistance measurement on the smartphone or tablet display. These measurements, GPS location from the phone and images can be saved to Fluke Connect Cloud storage and shared with the project team. Other features include:

• Earth ground AC leakage current measurement: identify AC leakage currents without disconnecting the earth ground stake from the grounding system – ideal for system troubleshooting.

• Rugged: heavy-duty clamp jaw stays in alignment and in calibration even in industrial environments.

• Logging measurements: the earth ground clamp saves time by automatically recording data at pre-set intervals and saves up to 32 760 measurements in memory at the set logging interval. Saves time by recording and storing measured values.

• Alarm threshold: user-defined high/low alarm limits, for rapid measurement evaluation.

• Bandpass filter: selectable bandpass filter function removes unwanted noise from the AC leakage current measurement.

For more information contact Comtest, +27 (0)10 595 1821, [email protected], www.comtest.co.za



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