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Extensible electrical ring main unit

A technology for ring network cabinets and extended cables, which is applied to electrical components, power distribution substations, gas-insulated closed substations, etc., and can solve problems such as non-extensible ring network cabinets that cannot be converted to expandable ring network cabinets, and structural changes.

Inactive Publication Date: 2015-01-14
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, in some cases, often most cases, non-expandable RMUs cannot be converted to expandable RMUs due to major obstacles to structural changes or their limitations

Method used

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  • Extensible electrical ring main unit
  • Extensible electrical ring main unit
  • Extensible electrical ring main unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention is described hereinafter with reference to non-exhaustive exemplary embodiments.

[0018] figure 1 A hermetically sealed electrical ring main unit filled with an insulating gas such as SF6 is shown. This electrical ring main unit is of the expandable type, therefore, it can be connected to other electrical ring main units. The electrical ring network cabinet has at least one expandable cable bushing assembly (100) and a common bus bar assembly (101).

[0019] The expandable cable sleeve assembly (100) has an expandable cable sleeve (104), and the expandable cable sleeve (104) is arranged in a corresponding / corresponding opening in the electrical ring network cabinet, so that the electrical ring network cabinet Provides the necessary extensions to connect it to other electrical ring main units. Said opening for accommodating the expandable cable gland (104) and the expandable cable gland assembly (100) in which it is located for internal coupling between...

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PUM

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Abstract

The invention provides an electrical ring main unit having circuit breaker unit or fuse unit or load break switch or suitable combination thereof and common bus bar assembly. The electrical ring main unit is hermetically sealed and comprises at least one opening suitably located in therein. The opening is provided in the electrical ring main unit to interchangeably accommodate an insulating plug of an insulating plug assembly or an extensible cable bushing of extensible cable bushing assembly.

Description

technical field [0001] The present invention relates to electrical ring main units, and more particularly, to electrical ring main units that can be expanded when the need arises. Background technique [0002] In general, ring main units are classified as extended or non-expandable types based on their ability to expand to connect to other ring main units. This extension is provided by means of extendable cable glands properly positioned on the RMU. [0003] Indeed, at the time of manufacturing the ring main unit, the need for an expandable ring main unit for current use or future use has to be correspondingly pre-considered so that expandable cable bushings are provided during manufacture of the ring main unit. In such cases, extendable cable glands need to be provided, whether or not this is a current need. In addition to this, various other considerations and anticipations must be made when fabricating an expandable RMU, such as the need to provide (i.e. on one or each ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B7/06H02B7/01
CPCH02B13/005H02B7/06H02B7/01
Inventor S·T·杜克凯亚潘P·A·富塔内S·R·奇尔拉G·D·哈特高恩卡
Owner ABB TECH AG