The series resonant test device (Frequency series resonance device) utilizes a tuning inductor and load capacitance to produce power frequency series resonance, thereby obtaining a power frequency test voltage. The series resonance consists of an isolation transformer, a frequency conversion and voltage regulation power supply, an excitation transformer, a reactor, and a capacitive voltage divider. The capacitance of the test object and the reactor form a series resonance connection; the voltage divider is connected in parallel with the test object to measure the resonant voltage on the test object and serve as an overvoltage protection signal; the frequency conversion power output is coupled to the series resonance circuit through the excitation transformer, providing the excitation power for series resonance.

Main Technical Features


* It is one of the few products in the country that has passed the strict type test appraisal by the national department - Electric Power Industry Electrical Equipment Quality Inspection and Testing Center (Wuhan High Voltage Research Institute), ensuring reliable quality and the safety of test personnel, test objects, and test equipment itself;
* Small size, light weight, especially suitable for on-site use;
* Complies with national standard requirements: has the function of monitoring peak value/√2, can monitor the test waveform in real time; * Overvoltage, overcurrent, discharge, overheating, and zero-start protection are comprehensive and reliable, with an action time of 1 microsecond;
* The device comes with a built-in micro printer, which can print and save test data in a timely manner;
* Designed with military standard anti-vibration and dustproof features, resistant to long-distance transportation and harsh usage environments;
* One-key mouse-style knob "foolproof" operation, with a large screen LCD display;
* Unique software calibration function, convenient for users to calibrate meters, ensuring the accuracy of high voltage values;
* German Rittal design all-aluminum alloy chassis, dual-use for vertical and horizontal placement, lightweight and beautiful, greatly facilitating on-site use;
* All main components are imported from world-renowned enterprises, including Texas Instruments and Intel from the United States, Siemens and Schneider from Germany, and Toshiba and Fuji from Japan;