By hvhipot 
Before the majority of electric power workers conduct high-voltage power tests outdoors, they generally need to measure the resistivity of the soil on the test site. Therefore, they need to use a grounding resistance tester. This device has a very wide range of applications in the power industry. Here is a brief introduction to the main significance of using a ground resistance tester.
The grounding resistance tester consists of the host, a current clamp (clamp pair), software data, test wires, auxiliary ground rods, communication lines, etc. The host special design toolbox, polypropylene plastic as raw material, add a new composite filler injection molding, density, strength, stiffness, hardness, abrasion resistance, heat resistance, excellent insulation, can withstand about 200 kg in the shell Pressure, various environmental tests to ensure high precision, high stability and high reliability. The main unit is a large LCD display, backlight, and a bar graph indicator, which is clear at a glance. At the same time, it can store up to 2000 sets of data for historical data reading, data access through software, storage, report printing and other functions.
The grounding resistance tester is a standard for testing methods combined with new lightning protection grounding resistance. It is specially designed for on-site construction and measurement of grounding resistance, soil resistivity, ground voltage, ground wire leakage current, AC and current, and DC resistance. It can be carefully organized and designed. It is manufactured with a current of 20mA during the test. It adopts some newly developed digital information processing data technology, precision 4-wire method, 3-wire method and simple 2-wire method, selection method, double clamp method to measure ground resistance, large-diameter current clamp design, It can measure the grounding management system using these large-scale grounding down conductors, and can flexibly analyze and measure various problems such as single-point and mesh grounding. Any grounding resistance value for complex grounding understanding. There is no need to disconnect any of them during parallel grounding measurement. Connecting ground electrodes in parallel can improve the convenience of students’ measurement to the greatest extent. Imported FFT (Fast FHV Hipot Electric Co., Ltd.ier Transform) technology, AFC (Automatic Frequency Reach Control) technology, has its own unique anti-interference ability and the ability to adapt to the environment, and the results of repeated experiments have strong consistency. It is widely used in the measurement of grounding resistance, soil resistivity, grounding voltage, alternating current generated, and leakage current in China’s electric power, telecommunications, meteorology, oil fields, construction, lightning protection and electrical automation equipment of the University of Technology.