HYG series of substation frequency conversion series resonance test device, this series of voltage withstanding device is mainly designed and manufactured for 220 kV and below substation primary electrical equipment AC voltage withstanding test. HYG series frequency conversion series resonance test device for substation can meet AC withstand voltage test of capacitive equipment such as transformer, GIS system, SF6 switch, cable, bushing and so on. HYG series frequency conversion series resonance test device for substation can not only meet the requirements of equipment test conditions of high voltage and small current, but also meet the requirements of equipment test conditions of low voltage and large current. It has a wide scope of application. It is an ideal voltage-withstanding equipment for high voltage test departments at prefecture, city and county levels, as well as for power loading and repairing engineering units.

Output frequency: 20-300 Hz

Resonant voltage waveform: pure sine wave, waveform distortion rate less than 1.0%.

Maximum test capacity: 3000 kVA and below

Working system: 15 minutes continuous working time at full power output

Quality factor: 30-90

Frequency regulation sensitivity: 0.1Hz, instability < 0.05%.

Operating power supply: 380/220V+15%/50Hz+5%

HYG series substation frequency conversion series resonance test device is mainly composed of frequency conversion control power supply, excitation transformer, reactor and capacitor voltage divider. The frequency conversion control power supply adopts imported SPWM digital waveform generator chip with 16 bits frequency resolution and 0.1 Hz frequency fineness at 20-300 Hz. At the same time, it adopts orthogonal asynchronous fixed carrier modulation mode to ensure good waveform output in the whole frequency range. The power part adopts advanced IPM module to ensure the stability and safety of the instrument.