KDDQ 2571Y Large-scale grounding grid grounding parameter measurement system

　　The KDDQ2571Y variable frequency high current grounding parameter measurement system consists of: variable frequency power source, variable frequency voltage and current tester, variable frequency shunt vector tester and its accessories. The measurement system conforms to and is better than "DL/T 475-2017" "grounding device characteristic parameters" The requirements of "Measurement Guidelines" can be widely used in the measurement of power frequency grounding impedance, ground grid shunt coefficient, step potential difference, contact potential difference, potential gradient and other parameters of various large-scale ground grids.

　　Features

• 　　The system adopts digital filtering and frequency selection measurement technology, which has super anti-interference ability and can eliminate 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 10kW, 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 suppression ratio is better than 66dB (more than 2000 times), the anti-interference ability is strong, and the data repeatability is good;
• 　　Using unique signal processing technology, it can effectively eliminate the influence of environmental electromagnetic interference in the process of grounding network parameter testing, and can complete the test of grounding impedance, shunt coefficient, step voltage, contact voltage, field surface potential gradient and other parameters;
• 　　6.5 inch LCD color touch screen, automatically display the test current and shunt vector current, the operation is simple and intuitive.