PURPOSE: To make it possible to correspond to various kinds of specifications of a current transformer by placing a secondary winding assembly on the external circumference of three cylindrical vessels forming one part of a wall of a sealed vessel of a line, and further outside a lead sleeve and a vessel assembly requiring to be sealed.
CONSTITUTION: A vessel body 20 units in a body a barrel 21, a flange 22 able to couple airtightly with a spacer 12 on a breaker 4 side, an end plate 24 having three holes 23 placed in geometry a triangular shape for separately receiving three-phase conductors 14 respectively and a cylindrical vessel 26 having a flange 25 positioned on an axis of a bore 23 in the end plate 24, and a connecting tube 30 incorporates in one a barrel 31, a flange 32 able to couple airtightly with the spacer 12 on the disconnecting switch 2 side and an endplate 34 having three bores 33 facing the flange 25. After a secondary winding assembly 17 is mounted on the external circumference of the cylindrical vessel 26, the vessel assembly 20 and the connecting tube 30 are joined airtightly to allow insulating gas to be filled within said vessel. Hereby, various kinds of secondary winding assembly provided according to current transformer specifications can be mounted without changing longitudinal dimensions of the whole of the device providing the constant insulating gas to be filled in the inside.
KODAMA KOUSUKE
KOSAKA YOSHIO
SHINOHARA CHIKAHIRO
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