Discussion on performance characteristics and technology of variable frequency earth grounding resistance tester

Frequency conversion earth grounding resistance tester performance characteristics and technology frequency conversion earth grounding resistance tester performance characteristics
1. The measured power frequency equivalence is good. The test current waveform is a sine wave, and the frequency is only 5 Hz from the power frequency, and is measured using two frequencies of 45 Hz and 55 Hz.
2. Strong anti-interference ability. The instrument adopts the different frequency method to measure, and with the modern software and hardware filtering technology, the instrument has high anti-interference performance, and the test data is stable and reliable.
3. High precision. The basic error is only 0.005 Ω and can be used to measure the earth's network with a small ground impedance.
4, powerful. It can measure current pile, voltage pile, grounding resistance, step voltage and contact voltage.
5, the operation is simple. Full Chinese menu operation, directly showing the measurement results.
6, wiring labor is small, no need for large current lines.
Frequency conversion earth grounding resistance tester technical indicators
1, measuring range: 0 ~ 150Ω (including current pile impedance)
2, resolution: 0.001 Ω
3. Measurement error: ± (reading × 2% + 0.002 Ω)
4, the maximum output voltage: AC 400V (45Hz, 55Hz, dual frequency, sine wave)
5, the maximum output current: AC 5A (45Hz, 55Hz, dual frequency, sine wave)
6. Current output gear: 5/4.5/4/3.5/3/2.5/2/1.5/1A, for every 0.5A, a total of 9 files.
7, anti-interference ability: anti-work frequency 50Hz voltage 10V
8. Soil resistivity measurement range: 0-999.9 Ω/M, accuracy: ±2%, resolution: 0.01 Ω/M
8, measuring line requirements: current line copper core cross-sectional area ≥ 1.5mm2 voltage line copper core cross-sectional area ≥ 1.0mm2
9, power supply: AC 220V ± 10%, 50Hz
10, external dimensions: 440 × 350 × 210mm3
11, instrument weight: 30kg
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