A medium-voltage terminal lead wire structure of a capacitive voltage divider

Abstract

The invention discloses a lead structure for a medium-voltage terminal of a capacitive voltage divider and can be widely applied to the medium-voltage terminal of the capacitive voltage divider. The lead structure comprises a thread copper rod of which the surface is coated with an insulation layer; the thread copper rod is provided with a terminal which is exposed out of the insulation layer; a gasket is sleeved on the terminal; a lead is connected with the gasket which is clamped and fixed on the thread copper rod through a first nut and a copper-sphere-shaped nut cap; the copper-sphere-shaped nut cap is arranged outside the terminal and a head of the terminal is wrapped in the copper-sphere-shaped nut cap; and compared with the conventional lead structure for the medium-voltage terminal of the capacitive voltage divider, the lead structure reduces local discharge capacity, prevents insulation layer damage and aging, and guarantees that the medium-voltage terminal of the capacitive voltage divider works normally.

Description

technical field [0001] The invention relates to a medium-voltage terminal of a capacitor voltage divider, in particular to a lead wire structure of a medium-voltage terminal of a capacitor voltage divider. Background technique [0002] At present, the capacitive voltage divider is widely used in power equipment as a voltage transformer. It obtains an intermediate voltage proportional to the primary voltage through the medium voltage terminal. With the advancement of technology and the continuous improvement of product voltage levels, The user's performance of electrical products is getting higher and higher. Partial discharge level is one of the important indicators. Partial discharge refers to the discharge that occurs at the weak point in the insulation of the product under the action of a certain external voltage. see figure 1 as shown, figure 1 It is a schematic diagram of the lead structure of the medium-voltage terminal of a traditional capacitor voltage divider. The...

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Problems solved by technology

[0003] The object of the present invention is to provide a lead wire structure for medium-voltage terminals of a capacitor voltage divider, which solves the problems of many burrs and sharp corners on the thread on the copper rod and the edge of the bottom surface and large partial discharge in the prior art, and prevents Insulation damage and aging

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