The characteristics of soil which is treated by salt solution, and water as the basic of grounding diagnostics

The importance factor for calculating and planning of grounding systems is the resistivity of soil. The soil resistivity, permitivity and permeability varies depend on the soil composition, temperature, water content and its chemical content, All these characretistics will be tested by variable frequency from low until high frequency. So for designing a good grounding systems and the diagnostics have to know the variation of resistivity of the soil. In this research we analyse the soil characteristics of the samples from Yogyakarta areas in the Central Java Province by conducting some physical treatments such as water, salt solution, Then these samples are tested using 0 Hz-15 MHz frequency from sinusoidal power supply. Generally, soil impedance has a negative correlation upon addition of water and salt content, that means that the resistivity will reduce by increasing the water or salt content.