SXDW-3A Variable Frequency Ground Network Tester Testing Equipment

Product 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.

SXDW-3A Variable Frequency Ground Network TesterA new type of variable frequency AC power supply has been adopted, and measures such as microcomputer processing control and signal processing have been taken to effectively solve the anti-interference problem during the testing process, simplify the experimental operation process, improve the accuracy and precision of the testing results, and greatly reduce 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),
SXDW-3A Variable Frequency Ground Network TesterBy adopting cross frequency anti-interference technology, it is possible to accurately measure data at 50Hz power frequency 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.

Product 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.