Automatic Anti-Interference Ground Grid Earth Resistance Tester
Darui Electric recommends:
Automatic Anti-Interference Ground Grid Earth Resistance Testeris a high-precision testing instrument used for measuring ground resistance and related parameters in various field applications such as substations. It features small size, light weight, easy portability, strong anti-interference performance, and high accuracy. The instrument has an integrated structure, built-in variable frequency power supply module, and the output power supply is continuously adjustable with variable frequency. The frequency can be changed to 45Hz or 55Hz. It is equipped with a high-speed processor core and uses advanced digital filtering technology, effectively avoiding interference from power frequency electric fields during testing, fundamentally solving the problem of accurate measurement under strong electric field interference. A large number of field tests and user usage conditions 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 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 display, ultra-large full graphic operation interface, every process is very clear and understandable, 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 instrument's built-in variable frequency power supply module provides the measurement output power supply. 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
Precise and fast. Internally uses a professional DSP fast digital signal processor as the processing core, which greatly improves the instrument's own computing and processing capability while ensuring the accuracy of measurement data.
l Full-process intelligent measurement and control
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 variable frequency power supply accordingly (rated output current is 5A), without human intervention, automatically completing the test task. The measurement content of the instrument includes the ground grid's grounding impedance Z, pure resistance component R, and pure inductive reactance component X.
l Massive data storage
The instrument is equipped with a calendar chip and large-capacity memory, which can save test results in chronological order, view historical records at any time, and print output.
l PC data processing
The data measured by the instrument can be exported via U disk, and then viewed and managed on a PC using the software provided with the instrument.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
