## How do Sonel tests transform the accuracy, safety and efficiency of soil system measurements and soil resistance?\r\n\r\n\r\nSonel Poland\'s advanced tests, offered by Retonak Shaya as an exclusive representative in Iran, utilize the latest technologies, diverse measuring methods and ergonomic design, offers a comprehensive and reliable solution for all testing and measuring needs of land systems, soil resistance and consistency. These devices not only guarantee high accuracy and recurrence, but also in accordance with the highest safety standards, protecting the lives of users and equipment.\r\n\r\n\r\n\r\nEnsuring the proper functioning of ground systems (orthing) to protect the lives of people, the safety of electrical and electronic equipment, as well as the proper functioning of lightning protection systems and electromagnetic interactions, are critical. Sonel S.A. As one of the largest European manufacturers of testing and measurement tools in the electricity industry, with over three decades of experience and relying on technical knowledge of electrical and electronics engineering, it has developed a set of MRU series tests that respond to a wide range of applications, from basic tests to complex land systems analysis.\r\n\r\nThese devices allow them to accurately examine the different parameters of the earth system by applying standard and modern measurement methods:\r\n\r\n### Measurement of Ohi Resistance:\r\n** Two electrodes (2p) method: ** for measuring the resistance of conductors and checking the continuity.\r\n** The method of three electrodes (3P) and four electrodes (4p): ** Standard and precise methods for measuring the resistance of the Earth\'s electrode and ground systems. The 4P method eliminates the effect of connecting wires and provides higher accuracy.\r\n** Three electrodes with additional clamp (3P + Clamp): ** Possibility of measuring multiple ground electrodes resistance without having to open connectors (suitable for extensive and parallel land systems).\r\n** Double Clamp / Rloop method: ** Measuring the resistance of the ground loop without the need to crush auxiliary electrodes, ideal for places where the electrode is unable to be crushed or the speed of testing is of great importance.\r\n** Impulse Resistance (in advanced models such as MRU-200): ** This unique feature enables the test system to test the ground system under conditions similar to lightning collision. By injecting standard waveform pulses (10µs, 20µS, 350µs), the actual impedance of the land system at high frequencies is evaluated, which is crucial to lightning protection systems. This procedure allows for testing and telecommunications transmission towers even without the need to open the guard.\r\n** Soil Resistivity (Wenner Method): ** Certain soil resistance measurement at different depths, which provides basic information for the proper and economical design of land systems. The device automatically calculates the amount of special resistance based on the interval of the electrodes.\r\n** Review of P.
Tehran