Product name: Earth network grounding resistance tester
Product specification: XSN-DW3A
Xsn-dw3a uses a new type of frequency conversion AC power supply, and the use of microcomputer processing control and signal processing measures, a good solution to the anti-interference problem in the test process, simplify the test operation process, improve the accuracy and accuracy of the test results, greatly reduce the labor intensity and test cost of the test personnel. The instrument adopts different frequency anti-interference technology, which can accurately measure the data under 50Hz power frequency in strong interference environment. The maximum test current is 3A, which will not cause the potential of the grounding device to be too high during the test. At the same time, it also has a strong anti-interference ability, so it can be measured without power failure. Suitable for testing power frequency grounding impedance, contact voltage, step voltage, and other power frequency characteristic parameters of various grounding devices and soil resistivity. Can test substation network (4Ω), water fire power plant, microwave station (10 Ω), lightning rod (10 Ω) multi-purpose models.
Product features:
1. The power frequency equivalence of measurement is good. The test current waveform is sinusoidal, and the difference between frequency and power frequency is only 5Hz. Two frequencies of 45Hz and 55Hz are used for measurement.
2, earth network grounding resistance tester
3, high precision. The basic error is only 0.005 Ω, which can be used to measure the earth network with small grounding impedance.
4. Powerful functions. Measuring current pile, voltage pile, grounding resistance, step voltage, contact voltage;
5, simple operation. Full Chinese menu operation, directly display the measurement results;
6, wiring labor is small, no need for large current line.
Product name: earth network grounding resistance tester, earth network grounding resistance tester, large ground network grounding resistance tester.
Test subjects:
It is suitable for testing and testing the grounding resistance of large power grid of electric power department, substation and other institutions.
Technical specifications of grounding impedance:
1, measurement range: 0 ~ 200Ω (including current pile impedance)
2, separation rate: 0.001Ω
3, measurement error: ± (reading ×1%+0.005 Ω)
4, the maximum output voltage: AC 400V (45Hz, 55Hz, dual-frequency, sine wave)
5, the maximum output current: AC 3A (load for 5Ω ~ 133Ωoutput 3A, less than 5 ω output 2A)
6, current output gear: 3/2.5/2/1.5/1A, each 0.5A one gear, A total of 5 levels
7, anti-interference ability: anti-power frequency 50Hz voltage 10V
8, the measurement line requirements: current line copper core cross-sectional area ≥1.5mm2, electrical pressure line copper core cross-sectional area ≥1.0mm2
9, power supply: AC 220V±10%, 50Hz
10, overall size: 295×340×310mm3
11, instrument weight: 28KG
Technical index of soil resistivity:
1, measurement range: 0~1000 Ω·m（欧姆·米)
2, the measurement accuracy: ±2%
3, resolution: 0.01Ω·m
