A mute power
capacitor of the present invention comprises a shell, a core and a core encapsulating film which are arranged in the shell, outgoing line terminals fixed outside the shell, and core leading-out wires. The encapsulating film is wrapped on the exterior of the core and is composed of two
layers of
basement films, a netted skeleton layer clamped between the two
layers of
basement films and the plastic damping
grease filled in the gaps between the two
layers of
basement films and the netted skeleton layer. By
compositing the two layers of basement films and the plastic damping
grease, a practical and convenient core external encapsulating structure is provided, so that the core can be fastened very well, a lead wire structure can be protected, the insulation between the core and the shell can be satisfied, and the structure characteristic and the effect of the mute power
capacitor can be enhanced by the arrangement of the two layers of basement films, and the product technological process is simplified. By utilizing the plastic damping
grease as the
receptor, the operation
noise of the power
capacitor can be reduced effectively, thereby realizing a mute effect. Meanwhile, the damping grease is formed by
compositing the special high-
molecular materials of good electrical insulating property, so that the insulation effect is enhanced, and the suitable range and the
voltage resistant grade of a product are improved.