KDDQ 2571Y-5A Large grounding grid ground impedance tester

　　KDDQ2571Y earth grid grounding resistance test system consists of: variable frequency power source, earth grid grounding resistance tester and its accessories. The measurement system fully complies with the requirements of "DLT475-2017" "Grounding Device Characteristic Parameter Measurement Guidelines", and can be widely used for power frequency grounding impedance, step potential difference, contact potential difference, potential gradient and other parameters of various large-scale ground grids Measurement.

　　Features

• 　　The system adopts digital filter frequency selection measurement technology, which has super anti-interference ability, and completely eliminates the errors caused by the interference of power frequency induction, zero sequence current, harmonics and spurious signals;
• 　　The variable frequency power source outputs a sine wave high-power signal as a test power source, with an output power of 2kW, with multiple protections for overvoltage, overcurrent, overload, input undervoltage, overtemperature, and short circuit;
• 　　The tester can collect data at multiple frequency points, the measurement data is accurate and stable, the attenuation rejection ratio is better than 70dB (the attenuation rejection ratio is greater than 3162 times), the anti-interference ability is strong, and the data repeatability is good;
• 　　Adopt unique digital filter frequency selection technology, with super anti-interference ability, completely eliminate the error caused by interference group measurement such as power frequency induction, zero sequence current, harmonics and spurious signals; effectively eliminate grounding The influence of environmental electromagnetic interference in the process of network parameter testing can complete the test of the grounding impedance, step voltage, contact voltage, field surface potential gradient and other parameters of the ground network;
• 　　6.5 inch LCD color touch screen, can input test current 1m, ground resistance RO, ground resistance ZO, automatic display test current, simple and intuitive operation.