Disc-type insulator with a cast-in electrode and process for its

Details Disc-type insulator with a cast-in electrode and process for its Disc-type insulator with a cast-in electrode and process for its

1984-03-02

1985-12-31

Askin, Laramie E.

Electricity: conductors and insulators

Insulators

Combined

174 28, 2642791, H01B 1742, H01B 1718, H02G 506

Patent

active

045623031

ABSTRACT:
A disc-type insulator for enclosed high-voltage equipment includes a cast-in electrode which is segmented and which extends peripherally and concentrically with respect to the edge surface of the disc. The cast-in electrode is connected to contact electrodes by means of contact tongues, the contact electrodes bearing against a metal mounting ring. To avoid damage to the disc-type insulator, to the contact tongues, or to the cast-in electrode during shrinkage of the disc-type insulator, following its casting, or damage resulting from thermal stresses during operation, the cast-in electrode is divided into a plurality of electrode segments which follow one another in the peripheral direction. The contact tongues are formed of bent-over extensions of the electrode segments and are "S" shaped. The electrode segments are composed of aluminum sheet which may have a smooth surface. The contact electrodes are fastened to the mounting ring by means of bolts. During the manufacture of the disc-type insulator, the electrode segments are fixed in the casting mold, before the casting operation begins. The segments are fixed by fastening the contact electrodes to a portion of the casting mold. Each of the electrode segments, with the associated contact tongues and contact electrodes, may be manufactured from a single part which is appropriately bent into the desired final shape.

REFERENCES:
patent: 3652778 (1972-03-01), Sakai

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