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 .
Product Feature
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.
0-999.9Ω / M, Accuracy : ± 2%, Resolution : 0.01Ω / M
Measured wire required value
Section surface of current wire copper core≥1.5 mm2
Power supply
Section surface of voltage wire copper core≥1.0 mm2
Power supply
AC220V±10%,50Hz
Dimension
440×350×210mm3
Weight
Weight
Details Images
Company Profile
Wuhan UHV Electric Power Technology CO., LTD Which is the branchs of Wuhan Huatian Electric Power Automation Co.,Ltd. Established in 2021. we are located in Wuhan East Lake High-Tech Development Zone, which is also named Wuhan Optical Valley with convenient transportation access. Ultra High Voltage Electric Power Technology is a well-experienced OEM/ODM factory engaged in the research, development, manufacture, sale and service of electric power testing equipment or systems.Including AC Series Resonant Test System, AC/DC/VLF Hipot Test Set, Transformer Tester, Secondary Injection Relay Tester, Cable/Line Tester, Insulation Oil Tester, Circuit Breaker/Switch Tester and SF6 Test Equipment etc. They are widely used in electric power,energy, transportation,metallurgical,chemical,mining and water conservancy project. We have obtained the ISO 9001 quality system certification, OHSAS 18001:2007 Occupational Health and Safety Management System certification and all products conform to the international CE or Chinese state standards. Our products are widely exported to all over the world and our service are recognized and highly appreciated by world scale customers, we will always right be here take the customer as first priority and provide you the best solution. Looking forward to building a thrust-worthy and long-term relationship with you.
Hubei,China
