A Basic Guide To Earth Testing

1. A Basic Guide To Earth Testing Earthing through earth electrodes is a protection valve in most electrical installations. Regular earth resistance testing is essential in these installations, but most testing methods are time-consuming, inconvenient, or prone to inaccurate results. Many different methods work for accurately measuring earth resistance.  Attached Rod Technique (ART)  3 terminal testing ground electrode testing  2 terminal ground electrode testing  Clamp ground electrode testing Let us talk about them in detail - The simplest is to perform a direct measurement that uses an ac test current. Select the frequency of this current but not an integer multiple of the mains supply frequency. A three-terminal or fall-of-potential method is a much better method that uses a link to the electrode under test and two test spikes that must be pushed into the ground before the test is carried out. This method is accurate, and any problems with the measurements are readily apparent, as the resistance graph will exit markedly from the desired shape. The test process is time-consuming and needs much space and careful assistance as the earth electrode under test must be disconnected from all other circuits while the test is underway.

2. Coming to another procedure more convenient one for measuring earth resistance is the clamp-on or stakeless method. We need a tester acclimated to inject a test current into the earth electrode system through a clamp setup and utilize the same clamp head to estimate the resultant current flowing in the electrode under test. While there are no direct connections, and the earth electrode does not need to disconnect from other circuits, you can quickly and easily do the test. More adaptable than the stakeless method and more convenient than the traditional fall-of-potential method is provided by the Attached Rod Technique (ART). The primary process includes a current measuring clamp (ICLAMP) which is put around the earth electrode under test. The tester is designed to bypass system leakage and noise currents streaming through the earth electrode to measure the test current despite extraneous effects correctly. If we want to go ahead with earth resistance testing, the right equipment and awareness of the limitations of the different test methods are imperative. Sometimes ART testing isn't suitable in every case, although it is pretty accepted universally. The entire Earth resistance testing is not very satisfying as the results of the various test methods can vary. Some of the brands that deliver accurate results are Megger. The Earth Tester Megger automatically performs the earth testing calculations and supplies a report. CONTACT US OMNI CONTROLS INC.: https://www.omnicontrols.com/ Commerce Park Professional Center 5309 Technology Dr. Tampa, FL 33647 P: 813.971.5001 Email: sales@omnicontrols.com