KDWS-10A type large ground network grounding resistance tester, can measure the substation ground network (4Ω), water and thermal power plant, microwave station (10Ω), lightning rod (10Ω) multi-purpose model, the use of new frequency conversion AC power supply, and the use of microcomputer processing control and signal processing measures, a good solution to the anti-interference problem in the test process, simplify the test operation process. The precision and accuracy of test results are improved, and the labor intensity and test cost of test personnel are greatly reduced.

1. Good power frequency equivalence of measurement. The test current waveform is sine wave, and the frequency is only 5Hz different from the power frequency, and two frequencies of 45Hz and 55Hz are used for measurement.
2, strong anti-interference ability. The instrument adopts different frequency method and modern software and hardware filtering technology, which makes the instrument have high anti-interference performance, and the test data is stable and reliable.
3, high precision. The basic error is only 0.005Ω, which can be used to measure large ground grids with small ground impedance.
4, powerful. Can measure current pile, voltage pile, ground resistance, step voltage, contact voltage.

1, impedance measurement range: 1MΩ ~ 200Ω
2, resolution: 0.001Ω
3, measurement error: ±(reading ×2%+0.005Ω)
4, anti-interference ability: power frequency :50Hz voltage :10V error :0.001Ω
5, test current waveform: sine wave
6, test current frequency: 45Hz, 55Hz dual frequency
7, maximum output current: 5A, (optional：45Hz, 55Hz）