Product name: HCJD-I Different-frequency Earth Grid Ground Resistance Tester
Category: High-voltage Equipment Comprehensive Test Series

Detailed introduction

Product introduction

This instrument is suitable for testing the power frequency grounding impedance, contact voltage, step voltage and other power frequency characteristic parameters and soil resistivity of various grounding devices.

Functional features

※ The measured power frequency equivalence is good. The test current waveform is a sine wave, and the frequency is only 5Hz different from the power frequency. The measurement is carried out at two frequencies of 45Hz and 55Hz;

※ Strong anti-interference ability. This instrument adopts the different-frequency method for measurement, combined with modern software and hardware filtering technology,

※ The instrument has high anti-interference performance and the test data is stable and reliable;

※ High accuracy. The basic error is only 0.005Ω, which can be used to measure large ground grids with very small ground impedance;

※ Powerful functions. It can measure current piles, voltage piles, ground resistance, step voltage, and contact voltage;

※ Simple operation. Full Chinese menu operation, directly display the measurement results;

※ Small wiring labor, no need for large current wires.

Technical parameters

Impedance measurement range 0～150Ω

Resolution 0.001Ω

Measurement error ±(2% reading + 0.005Ω)

Power frequency voltage 10V

Test current waveform Sine wave

Test current frequency 45Hz, 55Hz dual frequency

Maximum output current 5A

Maximum output voltage 420V

Measurement line requirements Current line copper core cross-sectional area ≥1.5mm2

Voltage line copper core cross-sectional area ≥1.0mm2

Dimensions 440mm×350mm×210mm

Use conditions

Ambient temperature -10℃～50℃

Ambient humidity ≤85%RH

Working power AC220V±10%

Power frequency 50±1Hz