People often feel safer when residing in grounded buildings which are installed with the right earthing systems. The systems are essential in giving safety to dwellers and electronic devices by providing a safer path for the colossal current from a lightning strike or even from an over-voltage system. Therefore, the earthing systems necessitate for regular ground testing exercises. They are aimed at affirming that the earth resistance does not increase and also to ensure that the systems are in good condition.
Traditionally, technicians used antique test apparatus and probes. The probes were primarily used to introduce current into the ground between the test electrodes and the control probe used. This was shadowed by the actual measuring of current. Only the drop or rise in voltage was recorded for the soil embedded by the apparatus. After taking the readings, the technician would use Ohm principles to compute the earth resistance proximate to the grounding system.
With the development of new instrumentation, the test procedure was standardized by the use of two modern approaches. They were introduced by making slight modifications so as to deal with special situations that needed fine-tuning. It also aimed at improving the productivity and functionality of earthing systems. However, both methods deploy similar instrumentation which has undergone a steady improvement to enhance safety, convenience, accuracy, and ease of operations.
The first method is the three-point test approach. It is performed by isolating the grounding system under test from the power source. It also obliges the technician to remove all the conducting and neutral connections that are extending past the earthing system. This approach is effective for large earthing systems. It is also appropriate for small electrode connections.
In addition, the other approach is the stake-less method. It is the only approach that can be carried out when the system is connected to a power utility. It thus obliges the technician to connect the test apparatus with a reliable power source. The test is most effective in small electrode regions because it gives the results of frequencies in kilohertz units. It is however not effective in testing long conducting regions.
For purposes of producing the right data for a grounding system, the correct method and equipment should be used. This increases the accuracy of results and makes the test to be faster and easier. Other conditions of the earthing system being tested should be properly calculated for accuracy. For instance, the rainfall can affect the results of the system under test than it would be under normal conditions.
Nevertheless, more advanced testing procedures have been introduced to generate concrete and accurate results. They are computer-aided test procedures that do not require additional analysis and computations. The procedures do not need the technicians to de-energize or isolate any component from the earthing system under the test. They have the capability to detect and remove background disturbances like noises, stray currents, and radio frequency interference.
Therefore, the test procedures have maintained a persistent progression in stages with the ultimate goal of improving test accuracy. This has also been triggered by an improvement in instrumentation used. The testing is helpful in that it improves how the lightning earthing systems will function in conveying the discharged spark current to the ground.
Traditionally, technicians used antique test apparatus and probes. The probes were primarily used to introduce current into the ground between the test electrodes and the control probe used. This was shadowed by the actual measuring of current. Only the drop or rise in voltage was recorded for the soil embedded by the apparatus. After taking the readings, the technician would use Ohm principles to compute the earth resistance proximate to the grounding system.
With the development of new instrumentation, the test procedure was standardized by the use of two modern approaches. They were introduced by making slight modifications so as to deal with special situations that needed fine-tuning. It also aimed at improving the productivity and functionality of earthing systems. However, both methods deploy similar instrumentation which has undergone a steady improvement to enhance safety, convenience, accuracy, and ease of operations.
The first method is the three-point test approach. It is performed by isolating the grounding system under test from the power source. It also obliges the technician to remove all the conducting and neutral connections that are extending past the earthing system. This approach is effective for large earthing systems. It is also appropriate for small electrode connections.
In addition, the other approach is the stake-less method. It is the only approach that can be carried out when the system is connected to a power utility. It thus obliges the technician to connect the test apparatus with a reliable power source. The test is most effective in small electrode regions because it gives the results of frequencies in kilohertz units. It is however not effective in testing long conducting regions.
For purposes of producing the right data for a grounding system, the correct method and equipment should be used. This increases the accuracy of results and makes the test to be faster and easier. Other conditions of the earthing system being tested should be properly calculated for accuracy. For instance, the rainfall can affect the results of the system under test than it would be under normal conditions.
Nevertheless, more advanced testing procedures have been introduced to generate concrete and accurate results. They are computer-aided test procedures that do not require additional analysis and computations. The procedures do not need the technicians to de-energize or isolate any component from the earthing system under the test. They have the capability to detect and remove background disturbances like noises, stray currents, and radio frequency interference.
Therefore, the test procedures have maintained a persistent progression in stages with the ultimate goal of improving test accuracy. This has also been triggered by an improvement in instrumentation used. The testing is helpful in that it improves how the lightning earthing systems will function in conveying the discharged spark current to the ground.
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