The working principle and core technology of the capacitance and inductance tester

The working principle of the capacitance and inductance tester is mainly based on the principle of digital bridges, used to measure the parameters of impedance components, especially the values of capacitance C and inductance L. Its working principle can be roughly divided into two stages: charging and discharging.

During the charging process, the tester introduces current into the circuit through the power supply. When the current passes through the capacitor, it gradually charges and the voltage increases with time. Similarly, when current passes through an inductor, the inductor gradually stores energy and forms a magnetic field, while the voltage decreases over time.

During the discharge process, the tester will disconnect the power supply and calculate the capacitance and inductance values by measuring the voltage changes on the capacitors and inductors. Specifically, the tester will monitor the rate of voltage drop of the capacitor during discharge, which depends on the magnitude of the capacitance value. Therefore, by measuring the rate of voltage change, the tester can calculate the capacitance value. Similarly, the tester will also monitor the voltage changes of the inductor during discharge to calculate the inductance value.

The core technology of the capacitance and inductance tester mainly includes the following aspects:

① High current and high-precision current clamp: This current clamp eliminates the need to remove connecting wires when measuring capacitors on site, simplifying the testing process, improving work efficiency, and avoiding damage to power equipment.

② Highly intelligent: The tester can automatically calculate the capacitance value of each phase, total capacitance value, reactive power and other parameters, which is simple and intuitive, reducing the burden on testers.

③ Four terminal measurement technology: This technology makes measurements more accurate and has good test repeatability.

④ Automatic compensation: The tester can automatically perform current segmentation compensation and linearize the full range of current, thereby improving measurement accuracy.

In summary, the working principle of the capacitance and inductance tester is based on the digital bridge principle, which calculates the capacitance and inductance values by measuring the voltage changes of capacitors and inductors during the charging and discharging process. And its core technologies include high current high-precision current clamp, high intelligence, four terminal measurement technology, and automatic compensation, which make the measurement of the tester more accurate, convenient, and efficient.

ZC-800C Capacitance and inductance tester instrument adopts high-speed microprocessor to synchronously collect the voltage signal and current signal of the tested object, and automatically calculate the capacitance value and inductance value. The on-site measurement capacitor does not need to remove the connecting wire, which simplifies the test process and effectively improves the work efficiency. After the test, the capacitor capacity and other parameters of each phase are automatically calculated, and it is very easy to identify the quality change of the capacitor and the fault of the connecting conductor between devices.

Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com