Gas-insulated switchgear
US-10069285-B2 · Sep 4, 2018 · US
Gas-insulated electrical equipment
US10965106B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10965106-B2 |
| Application number | US-201616063742-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 15, 2016 |
| Priority date | Feb 17, 2016 |
| Publication date | Mar 30, 2021 |
| Grant date | Mar 30, 2021 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A gas-insulated electrical equipment includes: a grounded tank filled with an insulating gas; a central conductor which is disposed inside the grounded tank and to which to apply a voltage; a high-resistance insulating portion which is disposed on an inner surface of the grounded tank and which is configured of an insulating material of high resistivity; a low-resistance insulating portion which is disposed on at least a partial front surface of the high-resistance insulating portion and which has a resistivity lower than that of the high-resistance insulating portion, and a non-linear resistance insulating portion which is disposed on at least a partial front surface of the low-resistance insulating portion and which is configured of a non-linear resistance material, which exhibits a non-linear resistivity relative to a change in electric field, and an insulating material of high resistivity, wherein the low-resistance insulating portion has a floating potential.
First claim
Opening claim text (preview).
The invention claimed is: 1. A gas-insulated electrical equipment, comprising: a grounded tank filled with an insulating gas; a central conductor which is disposed inside the grounded tank and to which to apply a voltage; a high-resistance insulating portion which is disposed on an inner surface of the grounded tank and which is configured of an insulating material of high resistivity; a low-resistance insulating portion which is disposed on at least a partial front surface of the high-resistance insulating portion and which has a resistivity lower than that of the high-resistance insulating portion; and a non-linear resistance insulating portion which is disposed on at least a partial front surface of the low-resistance insulating portion and which is configured of a non-linear resistance material, which exhibits a non-linear resistivity relative to a change in electric field, and an insulating material of high resistivity, wherein the low-resistance insulating portion has a floating potential, wherein the electrical resistivity of the low-resistance insulating portion is smaller than the lowest value of the electrical resistivity of the non-linear resistance material of the non-linear resistance insulating portion. 2. The gas-insulated electrical equipment according to claim 1 , wherein the high-resistance insulating portion has an electrical resistivity of 10 9 Ωm or more. 3. The gas-insulated electrical equipment according to claim 1 , wherein the non-linear resistance insulating portion is such that the non-linear resistance material is disposed therein in such a state as to be linked so as to connect the interface between the low-resistance insulating portion and the non-linear resistance insulating portion and the interface between the non-linear resistance insulating portion and the insulating gas. 4. The gas-insulated electrical equipment according to claim 1 , wherein a time constant of the non-linear resistance insulating portion is smaller than a discharge delay time. 5. The gas-insulated electrical equipment according to claim 1 , wherein the low-resistance insulating portion is configured of a low-resistivity material of conductive polymer.
Assignees
Inventors
Classifications
- H02G5/065Primary
Particle traps (gettering in vacuum switches H01H33/6683; in discharge or vacuum tubes H01J7/18, H01J19/70) · CPC title
- H02B13/045Primary
Details of casing, e.g. gas tightness · CPC title
Gas-insulated switchgear · CPC title
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Frequently asked questions
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- What does patent US10965106B2 cover?
- A gas-insulated electrical equipment includes: a grounded tank filled with an insulating gas; a central conductor which is disposed inside the grounded tank and to which to apply a voltage; a high-resistance insulating portion which is disposed on an inner surface of the grounded tank and which is configured of an insulating material of high resistivity; a low-resistance insulating portion whic…
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H02G5/065. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 30 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).