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Capacitive bushing, transformer and method for producing capacitive bushing

A capacitive and transformer technology, which is applied in the field of casting capacitive bushings, can solve problems such as filling capacitor cores with epoxy resin

Active Publication Date: 2021-09-24
HITACHI ENERGY SWITZERLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing capacitive bushings have various deficiencies, drawbacks and disadvantages with respect to certain applications
For example, in some cast capacitor bushings, it can be difficult to fill the capacitor core with epoxy before some epoxies become viscous and potentially harden prematurely

Method used

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  • Capacitive bushing, transformer and method for producing capacitive bushing
  • Capacitive bushing, transformer and method for producing capacitive bushing
  • Capacitive bushing, transformer and method for producing capacitive bushing

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Embodiment Construction

[0010] To promote an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings, and specific language will be used to describe the same. It should however be understood that no limitation of the scope of the invention is thereby intended. Any alterations and further modifications of the described embodiments and any further applications of the principles of the invention described herein may be contemplated as would normally occur to one skilled in the art to which the invention pertains.

[0011] refer to figure 1 , schematically illustrates some aspects of a non-limiting example of a transformer system 10 according to an embodiment of the present invention. The transformer system 10 includes a transformer 12 disposed in an oil bath 14 in a transformer tank 16, and the transformer system 10 includes a plurality of capacitive bushings 18, such as at least three capacitive bushings for a three-phase transformer ...

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PUM

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Abstract

A cast capacitive bushing comprising an electrical conductor; a plurality of capacitive layers disposed about the conductor, each capacitive layer comprising a grooved corrugated electrical insulator and a conductive sheet; and an epoxy resin encapsulating the a plurality of capacitive layers and form an epoxy cast, wherein the epoxy is disposed within and between each capacitive layer.

Description

technical field [0001] This invention relates generally to bushings and more particularly, but not exclusively, to cast capacitive bushings. Background technique [0002] Capacitive bushings remain an area of ​​concern. Some existing capacitive bushings have various deficiencies, drawbacks and disadvantages with respect to certain applications. For example, in some cast capacitor bushings, it may be difficult to fill the capacitor core with epoxy before some epoxy resins become viscous and potentially harden prematurely. Therefore, further contributions are still needed in this technical field. Contents of the invention [0003] One embodiment of the present invention is a unique cast capacitive bushing. Another embodiment is a unique transformer system. Another embodiment is a unique method for producing capacitive bushings. Other embodiments include devices, systems, apparatus, hardware, methods and combinations for capacitive bushings and other devices such as cabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/58H01F27/28H01F27/02
CPCC09D163/00H01B17/28H01F27/04H01B17/583H01F27/022H01F27/2847
Inventor L·埃尔德
Owner HITACHI ENERGY SWITZERLAND AG