Product overview
Currently in the power system, it is mainly used frequency large current three-pole measurements to test the ground network earth resistance. In order to prevent frequency interference generated by the power grid operation, to improve the accuracy of the measurement results, insulation preventive test code states: the test current of frequency large current method shall not be less than 30A. Thus, the test equipment is too heavy; the test process is complex; large work strength, long test time and many other issues.
Ground Network Earth Resistance Tester adopts the new variable frequency AC power, and take advantage of computer processing control and signal processing, to solve the interference problem of testing process, simplifying the test operation process, improve the precision and accuracy of test results, greatly reduce the labor intensity and testing costs. This device applies to test frequency ground resistance, contact voltage, pace voltage and earth electric resistivity. Can test substation grounding grid (4Ω), fire and water electric power plants, microwave stations (10Ω), lightning rod multi-purpose model (10Ω). It adopts different frequency anti-jamming technique, can get the data under 50Hz in strong interference circumstance. The maximum measured current is 5A , which will not cause the electric potential of the grounding device too high, it with strong anti-interference ability at the mean time, so it does not need power off during the test .
Products features
1. Good frequency equivalence. The measured current waveform is sine wave, the difference between frequency and power frequency is 5Hz, use 45Hz and 55Hz two frequency to test.
2. Strong anti-jamming ability, use different frequency method , assorted with modern hardware and software filtering techniques, make the device with strong anti-jamming ability, test results stable and reliable.
3. High precision, intrinsic error 0.005Ω, can test the ground network of small impedance.
4. Powerful . can test current pile, voltage pile, ground resistance, pace voltage, contact voltage.
5. Easy to operate, menu operated, directly display the test results. 6. Do not need high current wire.
Technique parameters
| power supply |
6VDC(4 no.5 alkaline dry batteries) |
| operating temperature |
-10ºC-55ºC |
| Relative humidity |
10%-90% |
| LCD |
4-digit LCD digital display, length and width 47×28.5mm |
| clamp table weight (including battery) |
1130g |
| clamp table size |
length 275mm, width 85mm, thickness 56mm |
| protection level |
double insulation |
| structure characteristics |
clamping mode |
| range shift |
Automatic |
| external magnetic field |
<40A/m |
| External electric field |
<1V/m |
| single measurement time |
1 SEC |
| resistance measurement frequency |
>1KHz |
| highest resolution resistance measurement |
0.001Ω |
| Resistance measurement range |
0.01-1000Ω |
| * current measurement range |
0-30A(type C) |
| measured current frequency |
50/60Hz |
| stored measurement data |
99units |
| setting range of resistance alarm critical value |
1-199Ω |
| * setting range of current alarm critical value |
1-499mA(type C) |
FAQ
1. Is your company a sales company or a manufacturer?
Wuhan UHV Power Technology Co.,Ltd. is an industrial and trade enterprise, with its own factory, self-produced and self-sold. We were founded in 2004 and have fifteen years of production experience. Our company has reliable production lines, test rooms and R&D centers.
2. Whether the goods are in stock, whether they can be customized, and how long the delivery time is.
After the goods have been ordered, it takes about 7 working days for production if there are no accidents.
3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is uniformly packed in non-fumigation wooden boxes.
4. What are the after-sales terms?
We offer free consulting service, one year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.
5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.
Contact us
Wuhan UHV Power Technology Co.,Ltd.
Address:Building 6, Optics Valley Optical-Mechanical Industrial Park, No.83, Gaoxin 5th Road,
East Lake High-tech Zone, Wuhan city .China 430223
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