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Thursday, 14 May 2015

Soil resistivity test Panipat Haryana India

Soil resistivity test Panipat, Haryana , India
Soil resistivity testing is the process of measuring a volume of soil to determine the conductivity of the soil. The resulting soil resistivity is expressed in ohm-meter or ohm-centimeter.
soil resistivity test

Soil resistivity testing is the single most critical factor in electrical grounding design. This is true when discussing simple electrical design, to dedicated low-resistance grounding systems, or to the far more complex issues involved in Ground Potential Rise Studies (GPR). Good soil models are the basis of all grounding designs and they are developed from accurate soil resistivity testing.
 4-point Method is by far the most used test method to measure the resistivity of soil
Formula- 2πLR
Where, l= distance between spikes in (mtr.)
                R= Resistance measured in (Ω)

Method used- 4 point method

Sr.
Resistance (ohm)
Location
Soil resistivity            (ohm-meter)
Remarks
1
0.25
Hospital
15.7
Average 15 ohm -meter
2
0.23
Susbstation#5
14.44

3
0.24
Substation#7
15.07



Standard value of average soil should be between 10 to 60 Ω-m

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