Series Resonance Test Equipment Product Introduction



Capacitive equipment such as transformers, GIS systems, SF6 circuit breakers, CT/PT, insulators, busbars, cables, and bushings are the most common primary electrical equipment in substations. According to the test regulations for withstand voltage of primary electrical equipment in substations at 220V and below, the corresponding AC/DC withstand test equipment must not only meet the test conditions of high voltage and low current but also meet the test conditions of low voltage and high current, requiring a wide range of applications. Using the principle of series resonance, the main equipment consists of a variable frequency power supply control box (operating console), an excitation transformer, reactors, and a capacitive voltage divider. By connecting a rectifier silicon stack and a microammeter to the capacitive voltage divider, DC withstand voltage tests can be completed. Due to the excellent filtering characteristics after system resonance, the DC voltage produced is comparable to the DC voltage obtained from rectification by ordinary test transformers. It is an ideal withstand voltage equipment for high-voltage test departments at the prefecture, city, and county levels, as well as for power installation, repair, and testing engineering units.



◆ Reference selection schemes for resonance test devices:  

A. Reference selection scheme for cable resonance test devices

B. Reference selection scheme for generator resonance test devices

C. Reference selection scheme for resonance devices for substation electrical equipment

D. Reference selection scheme for resonance step-up devices for CVT calibration

Series Resonance Test Equipment Product Aliases

AC withstand voltage resonance device, variable frequency resonance, variable frequency series resonance, series resonance, series resonance transformer,