Features: 1) Small volume and light weight: only 1/4 and 1/5 of the weight and volume of outdated products respectively 2) Low loss: with the actual loss less than 0.1%, capacitor itself has low consumption of energy, little radiation, low temperature rise, long service life, and good energy conservation effect 3) Excellent self-healing performance: when a part of isolation is fed through due to the overvoltage, it is capable of self healing, so as to continue the normal operation, where the reliability is improved greatly 4) Safety: equipped with self-discharging resistant and safety devices inside, it is safe and reliable 5) Without leakage: in order to avoid oil leakage during operation, so as to protect the environment, it employs the microcrystal line wax as impregnant, which remains solid temperature, and has a drip melting point higher than 70oC