High voltage capacitors have inner-fuse and outer-fuse structures, indoor pattern and outdoor pattern, single phase and three phases. Multiple new technologies, including SAS-40E solution and M/DBT impregnant, are adopted for strict vacuum treatment and manufacturing. The new generation of high voltage capacitor products has the advantages of high electrical performances, low losses, no pollution and long service life.

• Over-voltage：1.1Un long-time running
• Over-current capacity：1.3ln long-time running
• Capacity range：-5%～+10%
• Average medium losses：≤0.1W/kvar
• Shell material：flexible stainless steel
• Discharge capacity：built-in discharge resistor, 5min after the capacitor is disconnected from the power source, residual voltage is discharged to lower than 50V

• Temperature range：-40℃～+45℃ （or higher）
• Elevation：1000m
• Standards：IEC 60871

• Al foil edge-fold process

Because electric field at edge is rather high, electric corrosion may occur to aluminum foil edge of capacitors and early damage may be caused to the edge. Edge-fold process may improve local discharge performance by about 20%. As shown in the following figure：

Local discharge vs medium temperature

• Pole plate protrusion design

Resistance losses of pole plates may be eliminated essentially by protrusion design of pole plates. Transient over-current capacity is improved and reliability of large capacity capacitors are improved in particular. As shown in the following figure：

Losses vs temperature

• Independent impregnation system assurance

Sufficient removal of gases in shells of capacitors, and enough impregnation of insulation impregnant are paramount to ensure quality of capacitors. Independent oil impregnant treatment system adopts single treatment for capacitor, with direct and reliable effects. Injection of impregnant is completed by an independent system, so better performances of vacuum treatment and impregnation for capacitor is ensured.

• Unique internal fuse technology

Novel and unique internal fuse with notch （by breakpoint design）, provides better ampere-second features, and more reliable action.