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Help CenterSFJ044 Variable Frequency High-Current Multifunctional Ground Impedance Test System
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Email:coco@launch-electric.com
Introduction
The system complies with DL/T621-1997 standards of Grounding of AC Electrical Equipment , used to test grounding system, connected resistance and soil resistivity of large power plants and substations. It makes up for the defect of traditional measuring approaches, offering complete test items and reliable test for large grounding system
Multifunction: the system could test ground impedance of grounding system, as well as soil resistivity and connected resistance.
Strong anti-interference ability: the system used variable frequency, avoiding interference of 50Hz power frequency. The anti-interference ability is very strong
Flow injection frequency is adjustable, thus the system can acquire the frequency characteristics of the grounding system
Output waveform is sine wave, waveform distortion<1%
Large screen display of test data, test status, with real-time prompts
The flexibility to set the test current, frequency range, auto / manual switch of voltage and current regulation
High resolution, especially for large grounding grid (0.5Ω), the measurement accuracy is higher than similar products
With over current, overheat protection function
Technical Parameters
Input voltage；AC 220V 50Hz
Resolution：0.001Ω
Output test voltage：0～1000V
measuring accuracy：Grade 1.0
Output test current ：0～10A
Ambient temperature：-25℃～+50℃
Frequency adjustment range：30～120 Hz
Humidity:≤90％
Waveform deviation: 1％
Altitude: ≤2000M
Voltage stage test voltage：0～50V（or 0～100V）
Output high current：0～100A（connected resistance measurement）
measuring range：0.1～99.999Ω
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