Digital grounding resistance tester manual and method of use
1, grounding resistance measurement (Figure 1)
• Along the measured grounding electrode E (C2, P2) and the potential probe P1 and the current probe C1, they are 20 meters apart from each other in a straight line, so that the potential probe is in the middle of E and C, and the probe is inserted into the ground as required.
• Connect the grounding resistance terminals E (C2, P2), P1, and C1 to the position of the probe with a dedicated wire.
• Turn on the grounding resistance switch “ONâ€, select the appropriate gear and press the button once. The indicator light is on, and the value displayed on the LCD of the meter is the measured ground resistance.
2. Soil resistivity measurement (Figure 2)
• During the measurement, insert four probes along the straight line in the soil to be measured, and make the distance between the probes equal. The distance between each distance is L. The depth of the probe is required to be L/20cm, and the wires are respectively from C1 and P1. The terminals of P2 and C2 are connected to four probes. If the resistance value measured by the earth resistance meter is R, the soil resistivity is calculated as follows:
Ф=2πRL
Among them, soil-resistance (Ω•cm)
L—the distance between the probe and the probe (cm)
R-resistance meter reading (Ω)
The soil resistivity measured by this method can be approximated as the average soil resistivity in the region between the probes.
• The probe used for geodesic resistance and soil resistivity is generally made of aluminum alloy tube or round steel with a diameter of 25 mm and a length of 0.25 to 1 m.
3, conductor resistance measurement (Figure 3)
4. Ground voltage measurement and measurement wiring is shown in Figure 1. The C1 plug is removed, the plug between E and P1 is reserved, the ground voltage (EV) is activated, the indicator light is on, and the reading head value is the AC ground voltage between E and P1. value.
5. After the measurement is completed, press the “OFF†button of the power supply to turn off the meter.
1, grounding resistance measurement (Figure 1)
• Along the measured grounding electrode E (C2, P2) and the potential probe P1 and the current probe C1, they are 20 meters apart from each other in a straight line, so that the potential probe is in the middle of E and C, and the probe is inserted into the ground as required.
• Connect the grounding resistance terminals E (C2, P2), P1, and C1 to the position of the probe with a dedicated wire.
• Turn on the grounding resistance switch “ONâ€, select the appropriate gear and press the button once. The indicator light is on, and the value displayed on the LCD of the meter is the measured ground resistance.
2. Soil resistivity measurement (Figure 2)
• During the measurement, insert four probes along the straight line in the soil to be measured, and make the distance between the probes equal. The distance between each distance is L. The depth of the probe is required to be L/20cm, and the wires are respectively from C1 and P1. The terminals of P2 and C2 are connected to four probes. If the resistance value measured by the earth resistance meter is R, the soil resistivity is calculated as follows:
Ф=2πRL
Among them, soil-resistance (Ω•cm)
L—the distance between the probe and the probe (cm)
R-resistance meter reading (Ω)
The soil resistivity measured by this method can be approximated as the average soil resistivity in the region between the probes.
• The probe used for geodesic resistance and soil resistivity is generally made of aluminum alloy tube or round steel with a diameter of 25 mm and a length of 0.25 to 1 m.
3, conductor resistance measurement (Figure 3)
4. Ground voltage measurement and measurement wiring is shown in Figure 1. The C1 plug is removed, the plug between E and P1 is reserved, the ground voltage (EV) is activated, the indicator light is on, and the reading head value is the AC ground voltage between E and P1. value.
5. After the measurement is completed, press the “OFF†button of the power supply to turn off the meter.
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