The AC withstand voltage resonance device is mainly designed and manufactured for the AC withstand voltage tests of primary electrical equipment in substations below 220kV. It can meet the AC withstand voltage tests of capacitive equipment such as transformers, GIS systems, SF6 switches, cables, and bushings as per the regulations. It can not only meet the requirements of high voltage and small current equipment test conditions, but also the requirements of low voltage and large current equipment test conditions. It has a wide range of applications and is an ideal withstand voltage equipment for prefecture, city, and county-level high-voltage testing departments as well as power installation, maintenance, and testing engineering units.
List of configuration for the AC withstand voltage resonance device:

The AC withstand voltage resonance device is mainly composed of a frequency conversion control power supply, an excitation transformer, an inductor, and a capacitor divider. Among them, the frequency conversion control power supply adopts an imported special SPWM digital waveform generation chip, with a frequency resolution of 16 bits. The frequency accuracy can reach 0.1Hz within the range of 20 to 300Hz. At the same time, it adopts an orthogonal asynchronous fixed carrier modulation method to ensure a good output waveform throughout the frequency range. The power part uses an advanced IPM module to ensure the stability and safety of the instrument.
Product features of the AC withstand voltage resonance device:

1.For reactors of the same voltage level and capacity, they have a smaller volume and lighter weight; their temperature rise is lower under rated load; they are made of dry epoxy casting, with high mechanical strength, excellent electrical insulation performance, and are both aesthetically pleasing and reliable.

2. The variable frequency control source has a large capacity margin; strong protection function; excellent output waveform; good stability; multiple working modes available, easy to operate; uses 220V or 380V single-phase power supply, facilitating power acquisition at the site.

3. Flexible configuration. Various types of reactors can be selected to meet the requirements of different test samples, enabling multi-purpose use with one machine, and offering high cost-effectiveness.