SGDW-5A Ground Grid Tester|Class A lightning protection testing equipment|Class A lightning protection testing instrument is a high-precision testing instrument used for measuring grounding resistance and related parameters. The instrument has the characteristics of small size, light weight, easy portability, strong anti-interference performance, and high accuracy. The instrument adopts an integrated structure, with a built-in variable frequency power supply module, and the output power supply can be continuously adjusted with variable frequency. The frequency can be changed to 45Hz or 55Hz, with a built-in high-speed processor core, using high-end digital filtering technology, effectively avoiding the interference of power frequency electric fields on testing, fundamentally solving the problem of accurate measurement under strong electric field interference. The 5A variable frequency ground grid impedance tester is referred to as the ground grid tester; the instrument is suitable for testing the power frequency grounding impedance, contact voltage, step voltage, and other power frequency characteristic parameters of various grounding devices, as well as soil resistivity. It can test substation ground grids (4Ω), thermal and hydro power plants, microwave stations (10Ω), lightning rods (10Ω), and various other sites;
SGDW-5A Ground Grid Tester|Class A lightning protection testing equipment A large number of field tests and user usage conditions show that when the lightning protection device instrument is used for grounding grid testing in the harsh electromagnetic environment of operating substations, the measurement data of the variable frequency ground grid impedance tester is accurate and stable, with good repeatability, making it an ideal instrument for measuring the characteristic parameters of large and medium-sized grounding grids.
