Mute power capacitor

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of power capacitors, in particular to a silent power capacitor. Background technique [0002] With the development of the electric power industry, the application scale of power capacitors is getting larger and larger, especially in the complete sets of power capacitors used in large quantities in ultra-high voltage transmission systems, each capacitor set is often hundreds or even thousands of high-voltage power capacitors. Capacitors are combined in series and parallel, and this capacitor device plays an important role in improving the power factor and transmission capacity of the power system. [0003] However, a new problem that troubled everyone also appeared, which is noise. People usually think that power capacitors belong to static power equipment, and will not produce large noise during work. In fact, large power capacitors are in operation due to factors such as harmonics and strong electromotive ...

AI Technical Summary

Problems solved by technology

However, this noise reduction board does not achieve the desired effect, and at the same time increases the volume and oil consumption of the capacitor, thereby increasing the cost

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