Automatic Anti-Interference Ground Grid Earth Resistance Tester - Yangzhou Darui
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Automatic Anti-Interference Ground Grid EarthResistance Tester is a high-precision testing instrument used in various field applications such as substations for measuring ground resistance and related parameters. This instrument features small size, light weight, portability, strong anti-interference performance, and high accuracy. It adopts an integrated structure with a built-in variable frequency power supply module, and the output power supply is continuously variable and adjustable. The frequency can be changed to 45Hz or 55Hz. With a built-in high-speed processor core and advanced digital filtering technology, it effectively avoids the interference of power frequency electric fields on testing, fundamentally solving the problem of accurate measurement under strong electric field interference. A large number of field tests and user applications show that when conducting ground grid tests in the harsh electromagnetic environment of operating substations, the measurement data is accurate, stable, and repeatable, making it an ideal instrument for measuring the characteristic parameters of large and medium-sized ground grids.
Automatic Anti-Interference Ground Grid Earth Resistance Tester
Main features are as follows:
l Full touch ultra-large LCD display
Simple operation. The instrument is equipped with a high-end full touch LCD screen and a super large full graphic operation interface. Every process is very clear and understandable, and operators can use it without additional professional training. A gentle touch can complete the entire measurement process, making it a very ideal intelligent measurement device at present.
l Variable frequency technology, precise measurement
Strong anti-interference capability. The built-in variable frequency power supply module provides the measurement output power for the instrument. The frequency can be changed to 45Hz or 55Hz, and digital filtering technology is adopted to effectively avoid various power frequency interference signals on site, enabling the instrument to achieve high-precision, accurate, and reliable measurement.
l DSP high-speed processor
Accurate and fast. Internally, a professional DSP fast digital signal processor is used as the processing core, which greatly enhances the instrument's computing and processing capability while ensuring the accuracy of measurement data.
l Intelligent measurement and control throughout the process
With the strong support of the internal high-performance processing core, the instrument quickly and automatically completes a series of complex calculation steps such as current output, voltage acquisition, and frequency conversion during the entire measurement process. The instrument can automatically judge the impedance of the current loop and automatically adjust the output current value of the different-frequency power supply accordingly (rated output current is 5A), and automatically complete the test task without manual intervention. The measurement content of the instrument includes the ground impedance Z, pure resistance component R, and pure inductive reactance component X of the ground grid.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
