JPS5996812U

JPS5996812U - Winding structure of gas insulated induction appliances

Info

Publication number: JPS5996812U
Application number: JP19376082U
Authority: JP
Inventors: 春雄小野
Original assignee: 富士電機株式会社
Priority date: 1982-12-21
Filing date: 1982-12-21
Publication date: 1984-06-30

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のガス絶縁変圧器巻線の断面図、第２図は
従来の樹脂モールドコイルの要部の断面図と温度勾配、
第３図はこの考案の実施例を示すガス絶縁変圧器巻線の
断面図、第４図は端部モー　　゛ルドの考え方を示す模
式図である。１：、鉄心脚、２ツレーム、３．２３：低圧巻線、４．
２４：高圧巻線、４ａ〜４ｄ：樹脂モールドフィル、５
．６：軸方向スペーサ、７．８：絶縁物、９ニブレスリ
ング、１０：押しねじ、１１，１２：樹　　′脂モール
ド、１３．　３９．　４０：高圧端子、１４：低圧リー
ド線、１５：渡り線、１６：帯状導体、１７：層間絶縁
材、２４３〜２４ｄ：端部モールドコイル、３１ａ〜３
１ｂ：端部モ・−ルド、３２ａ〜３−２ｄ：端部モール
ド、３６〜３８：渡り線である。Figure 1 is a cross-sectional view of a conventional gas-insulated transformer winding, Figure 2 is a cross-sectional view of the main parts of a conventional resin molded coil, and temperature gradients.
FIG. 3 is a sectional view of a gas insulated transformer winding showing an embodiment of this invention, and FIG. 4 is a schematic diagram showing the concept of the end mold. 1: Iron core leg, 2 threads, 3.23: Low voltage winding, 4.
24: High voltage winding, 4a to 4d: Resin mold fill, 5
．． 6: Axial spacer, 7.8: Insulator, 9 nib ring, 10: Push screw, 11, 12: Resin mold, 13. 39. 40: High voltage terminal, 14: Low voltage lead wire, 15: Crossover wire, 16: Strip conductor, 17: Interlayer insulation material, 243-24d: End molded coil, 31a-3
1b: end mold, 32a to 3-2d: end mold, 36 to 38: crossover wires.

Claims

[Scope of utility model registration request]

(1) A gas-insulated induction electric appliance in which a low-voltage winding and a high-voltage winding each formed by overlapping a band-shaped conductor and an interlayer insulating material are inserted coaxially into a core leg with an axial spacer interposed between them. The high-voltage winding is composed of a plurality of coils divided in the axial direction, and each of the coils and the low-voltage winding is composed of an end-molded coil whose axial end portion is covered with resin over the entire circumference, and The molded resin at the end of each coil of the high voltage winding is formed so as to protrude laterally from the inner circumferential surface or outer circumferential surface of each coil so as to cover a part of the circumferential surface of each coil over the entire circumference. A winding structure for gas insulated induction appliances characterized by:

(2) Utility Model Registration Scope of Claims In the item described in claim 1, the molded resin at the end of the high-voltage winding is on the coil side at each coil corner except for the connecting wire lead-out portion that conductively connects the connected coils. What is claimed is: 1. A winding structure for a gas-insulated induction electric appliance, characterized in that the winding structure is formed so as to protrude from the coil and cover the corner portion of the coil.

(3) In the utility model registration claim described in claim 1, a plurality of axial spacers interposed radially between the low-voltage winding and the high-voltage winding are divided in the axial direction, and each spacer is separated from the high-voltage coil. A winding structure for a gas insulated induction electric appliance, characterized in that the winding structure is formed so as to be engaged with and supported by a protrusion of an end molded resin.

(4) Utility model registration Scope of Claim 1 In the product described in claim 1, the corner of the end mold resin in contact with the insulating gas is formed to have a rounded shape, and the corner of the end mold resin in contact with the insulating gas is The winding structure of gas-insulated induction electric appliances is characterized by its ability to alleviate local electric field concentration.
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