Handheld Capacitance and Inductance Tester

With the development of China's power industry, capacitor compensation devices have experienced unprecedented growth. However, this has also led to a significant increase in capacitor accident rates, including serious mass casualty incidents. To prevent parallel capacitor accidents and ensure the safe and reliable operation of the power grid, the State Grid Corporation of China has formulated the "Measures for Preventing High-Voltage Parallel Capacitor Accidents." This document explicitly states that "regular measurement of the capacitance of individual capacitors in capacitor banks is required, and the use of measurement methods without disconnecting the connecting wires is recommended to avoid bushing oil leakage caused by stress from disconnecting the wires."

This instrument is designed to address the problems encountered in measuring high-voltage parallel capacitor banks in substations. It has been specifically developed with reference to national standards such as GB3983.2-1989 "High-Voltage Parallel Capacitors," DL/T840-2003 "Technical Conditions for the Use of High-Voltage Parallel Capacitors," and JB5346-1998 "Series Reactors." It is primarily used for measuring high-voltage parallel capacitor banks and reactors in reactive power compensation devices.

This instrument employs a high-speed microprocessor to simultaneously acquire voltage and current signals from the test sample, automatically calculating capacitance, inductance, and reactive power values. On-site capacitor measurements do not require disconnecting the connecting wires, simplifying the testing process, effectively improving work efficiency, and avoiding damage to electrical equipment. After testing, it automatically calculates the capacitance and other parameters of each phase capacitor, making it easy to identify quality changes in capacitors and faults in the connecting conductors between components.

1.This instrument can measure the individual capacitance of parallel-connected capacitor groups (both single-phase and three-phase capacitors can be measured) without disconnecting wires. It can also measure the inductance of various reactors, meeting diverse on-site needs.

2.During measurement, the instrument displays the measured capacitance or inductance value, as well as the measured voltage, current, power, frequency, impedance, phase angle, and other data.

3.The instrument uses a variable frequency power supply output for testing, greatly improving its anti-interference capability on-site. It can be tested in high-intensity magnetic fields without affecting accuracy.

4.The instrument features a 7.0-inch 1024×600 high-definition touchscreen, providing clear visibility day and night. It includes Chinese menu prompts and is easy to operate.

5.The instrument has a built-in large-capacity non-volatile memory capable of storing 200 sets of measurement data.

The instrument is equipped with a USB flash drive interface, which can store any number of measurement data sets (limited only by the USB drive's capacity).

6.The instrument has a built-in high-precision real-time clock function, allowing for date and time calibration.

7.The instrument can be connected to an external printer to print measurement data and historical records.