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1. Measurement range: 0～5000Ω（including current pile impedance）
2. Resolution: 0.001mΩ
3. Measurement error: ±（reading×2％+0.005Ω）
4. Anti-power frequency 50 Hz voltage interference ability: 10V
5. Test current waveform: sine wave
6. Test current frequency:
single frequency: 40-70Hz resolution 0.1Hz set at will
Dual frequency: 50±0.1Hz to 50±10.0Hz set at will
60±0.1Hz to 60±10.0Hz set at will
7. Output current: 5A (the output current can reach 30A by using external power supply )
8. Output voltage: 400V (the output voltage can reach 1000V by using external power supply)
9. Requirements for measuring line:
cross sectional area of copper core of current line ≥1.5mm²
Sectional area of copper core of voltage wire ≥1.0mm²
The measuring line is provided by the user
10. Test power supply: built in 2kW variable frequency power supply
11. Power supply: AC220V±10％，50Hz
Product features:
1. The measured power frequency equivalence is good. The test current waveform is sine wave, and the difference between frequency and power frequency is 0.1Hz at least and 10Hz at most. It can be used to measure the frequency of 50 Hz or 60 Hz.
2. Strong anti-interference ability. The instrument adopts the method of different frequency measurement, combined with modern software and hardware filtering technology, so that the instrument has high anti-interference performance, and the test data is stable and reliable.
3. High measurement accuracy. The basic error is only 0.005 Ω, which can be used to measure the earth network with small grounding impedance.
4. Powerful function. It can measure current pile, voltage pile, grounding grid impedance, grounding resistance, grounding conduction, soil resistivity, etc.
5. Full touch liquid crystal display, super large full graphic operation interface, each process is very clear. The operator can use it without additional professional training. You can test the whole process with a little touch.
6. The digital earth resistance meter is equipped with calendar chip and large capacity memory, which can save the results at any time. The history can be viewed at any time and printed out. The current time and storage time can be displayed and printed.
7. Scientific and advanced data management: instrument data can be exported through U disk, and can be viewed and managed on any PC through special software. Able to generate reports and test reports
8. Safe and reliable. The instrument has grounding protection, current and voltage limiting protection, sound and light alarm and other functions to ensure the safety of test personnel and equipment.
9. With vector test function, it can measure the impedance and pure resistance of grounding grid, and can measure the impedance angle.
10. Less wiring labor, no need for high current wire.
11. Integrated type, with standard resistance and constant current source, convenient for field test and less field wiring.
12. The Portable Earth Resistance Meter is easy to operate, and the measurement process is controlled by microprocessor. As long as the appropriate measurement method is selected, the data measurement can be completed automatically under the control of microprocessor.
