Manufacturers supply 3A5A earth network grounding resistance tester / large network grounding device

Manufacturers supply 3A5A earth network grounding resistance tester / large network grounding device

1+
11000 CNY (1601.63USD)
2+
10900 CNY (1587.07USD)

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Product parameters:

  • Customization: Yes
  • Type: digital resistance measuring instrument
  • Brand: Yu De
  • Model: YD
  • Measuring range: 0-15Ω
  • Power supply: 220
  • Test voltage: 200
  • Accuracy: 3%
  • Repeat error: 0.01
  • Ambient temperature: 2
  • Relative humidity: 3
  • Calibration cycle: 4
  • Weight: 10
  • Size: 440 × 350 × 210




Instrument Overview

At present, in the power system, the grounding resistance test of the large-scale ground network is mainly measured by the three-pole method of the high frequency of the power frequency.In order to prevent the frequency interference caused by the operation of the power grid and improve the accuracy of the measurement results, the insulation preventive test procedure stipulates : The frequency of the large current method of the test current shall not be less than 30So that there have been many problems such as the heavy equipment of the test equipment, the complicated process of the test, the work intensity of the test personnel, the long test time and so on.

YDW-5A Type large-scale grounding resistance tester can be measured substation ground network4Ω), Water and thermal power plant, microwave station (10Ω), Lightning rod (10Ω) Multi-purpose models, using a new frequency AC power supply, and the use of computer processing control and signal processing and other measures to solve the test process of anti-jamming problem, simplifying the test operation process to improve the accuracy of test results and Accuracy, greatly reducing the labor intensity of labor and test costs.

The instrument is suitable for testing all kinds of grounding device power frequency grounding impedance, contact voltage, step voltage, frequency characteristics such as parameters and soil resistivity.This instrument uses different frequency anti-jamming technology, can be accurately measured in strong interference environment Frequency 50Hz The data under test is the largest 3A, Does not cause the test when the grounding device is too high, and it also has a strong anti-interference ability, it can be no power in the case of measurement.

Performance characteristics

1, The measurement of the frequency of the equivalent of good. Test current waveform for the sine wave, the frequency difference only with the frequency 5Hz , Use 45Hz with 55Hz Two frequencies are measured.

2, Anti-interference ability.This instrument uses different frequency measurement, with modern hardware and software filtering technology, making the instrument has a high anti-jamming performance, test data is stable and reliable.

3, The accuracy is high 0.005Ω, can be used to measure the ground impedance is very small large-scale network.

4, Powerful, measurable current piles, voltage piles, grounding resistance, step voltage, contact voltage.

5, Simple operation. Full Chinese menu operation, direct display of measurement results.

6, Wiring a small amount of labor, no large current line.

Technical specifications

1, Impedance measurement range: 1MΩ ~ 200Ω

2, Resolution: 0.001Ω

3, Measurement error: ± (reading ×2% +0.005Ω)

4, Resistance to power frequency 50Hz Voltage interference capability: 10V

5, Test current waveform: sine wave

6, Test current frequency: 45Hz , 55Hz Dual frequency

7, Maximum output current: 5A

8, The maximum output voltage: 200V

9, Measuring line requirements: current line copper core cross-sectional area ≥1.5mm2

Voltage line copper core cross-sectional area ≥1.0mm2

10, Power supply: AC220V ±10% , 50Hz

11, Dimensions: 440X350X210

12, The instrument weight: 10kg