SXDW-5A Lightning Protection Earth Network Tester

SXDW-5A Lightning Protection Earth Network TesterProduct Introduction:

At present, in the power system, the grounding resistance of the earth grid is mainly measured using the power frequency high current three pole method. In order to prevent power frequency interference during the operation of the power grid and improve the accuracy of measurement results, the insulation preventive test regulations stipulate that the test current of the power frequency high current method shall not be less than 30A. As a result, many problems have arisen, such as bulky test equipment, complex test processes, high workload of test personnel, and long test times.

The KDW-3A large-scale grounding resistance tester adopts a new type of variable frequency AC power supply and measures such as microcomputer processing control and signal processing, which effectively solves the anti-interference problem during the testing process, simplifies the experimental operation process, improves the accuracy and precision of the test results, and greatly reduces the labor intensity and testing cost of the testing personnel.
This instrument is suitable for testing the power frequency grounding impedance, contact voltage, step voltage, and other power frequency characteristic parameters of various grounding devices, as well as soil resistivity. Multi purpose models for measuring substation grounding (4 Ω), hydro thermal power plants, microwave stations (10 Ω), and lightning rods (10 Ω),
This instrument adopts cross frequency anti-interference technology, which can accurately measure data at the power frequency of 50Hz in strong interference environments. The test current is 3A, which will not cause the potential of the grounding device to be too high during testing. At the same time, it also has * resistance, so it can be measured without power outage.

Features:

1. The measured power frequency equivalence is good. The test current waveform is a sine wave, with a frequency difference of only 5Hz from the power frequency. Two frequencies, 45Hz and 55Hz, are used for measurement.

2. This instrument adopts the frequency difference method for measurement, combined with modern software and hardware filtering technology, making the instrument have high anti-interference performance and stable and reliable test data.
3. High precision. The basic error is only 0.005 Ω, which can be used to measure the earth network with very small grounding impedance.
4. Powerful functionality. Can measure current pile, voltage pile, grounding resistance, step voltage, and contact voltage.
5. Easy to operate. Fully Chinese menu style operation, directly displaying measurement results.
6. Low wiring workload, no need for high current wires.

SXDW-5A Lightning Protection Earth Network TesterMain performance requirements

1. Laser rangefinder: Range: 0-150m

2. Thickness gauge: Metal thickness measurement, ultrasonic

3. Theodolite: Range: 0-360 °, Resolution: 2 ″

4. Tensile strength gauge: Range: 0-40kgf

5. Combustible gas tester: Applicable gas: Combustible gas

6. Grounding resistance tester: Test current:>20mA (sine wave), resolution: 0.01 Ω

7. Earth Network Tester: Test current:>3A, resolution: 0.001-99.999 Ω, frequency optional

8. Soil resistivity tester: four wire method measurement, test current:>20mA (sine wave), resolution: 0.01 Ω

9. Equipotential tester: Test current: ≥ 1A, four wire method test, resolution: 0.001 Ω, equipped with large capacity lithium battery

10. Loop resistance tester: Resistance measurement resolution: 0.001 Ω, current measurement resolution: 1 μ A

11. Lightning protection component tester: Testing device: MOV, equipped with large capacity lithium battery

12. Insulation resistance tester: 0-1000M Ω

13. Electromagnetic shielding testing equipment: shielding generator, shielding receiver

14. Spectrum analyzer: 9 kHz~6.2 GHz frequency range, -160 dBm~+20 dBm dynamic range

15. Surface impedance tester: Measurement range: 103-1010 Ω

16. Electrostatic potential tester: Measurement range: ± 20kv

17. Residual magnetism tester: static magnetic field strength measurement, range: 0-200mT

18. Gauss meter: Range: 0-100mT

19. Infrared thermometer: -60 ℃~860 ℃

20. Digital multimeter: voltage, current, resistance measurement, resolution: 3 and a half digits

21. High performance digital multimeter: voltage, current, resistance measurement, resolution: 6.5 digits

22. Intelligent intercom terminal: including GPS positioning, intercom, voice call, trajectory positioning, image acquisition, transmission and other functions

23. GPS: GPS positioning

24. Explosion proof intercom: Explosion proof intercom

25. Standard resistance: 10-3-105 ohms, power 1/2w, wire wound type

26. Steel tape measure: Resolution: 0.01m

27. Vernier caliper: Range: 0-150mm