Self-blast circuit breaker using the two-phase state of a gas to improve the cut-off properties
US-2017162349-A1 · Jun 8, 2017 · US
Switchgear with a gas-tight insulating space
US10373785B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10373785-B2 |
| Application number | US-201615752684-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2016 |
| Priority date | Sep 18, 2015 |
| Publication date | Aug 6, 2019 |
| Grant date | Aug 6, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
The present disclosure relates to switchgear. Various embodiments may include medium- or high-voltage switchgear with a gas-tight insulating space. For example, a switchgear may include: a gas-tight insulating space where an insulating gas is kept above atmospheric pressure and two switching contacts in the space. At least one of the contacts may movable with respect to a nozzle. The insulating gas may include a mixture of at least 90% by mass of nitrogen and oxygen or nitrogen and carbon dioxide. The nozzle may include a plastic with at least 65% by mass in total of the elements carbon, nitrogen, and oxygen.
First claim
Opening claim text (preview).
What is claimed is: 1. A switchgear comprising: a gas-tight insulating space where an insulating gas is kept above atmospheric pressure; and two switching contacts arranged in the gas-tight insulating space; wherein at least one of the two switching contacts is mounted movably with respect to a nozzle; wherein the insulating gas comprises at least 90% by mass of nitrogen and oxygen or at least 90% by mass of nitrogen and carbon dioxide; and wherein the nozzle comprises a material made up of at least 65% by mass in total of carbon, nitrogen, and oxygen. 2. The switchgear as claimed in claim 1 , wherein the nozzle comprises less than 1% by mass of fluorine. 3. The switchgear as claimed in claim 1 , wherein the nozzle comprises at least one plastic chosen from the group consisting of: polyamide and polyimide. 4. The switchgear as claimed in claim 1 , wherein the nozzle and the at least one of the two switching contacts are arranged symmetrically in relation to one another with respect to an axis of rotation.
Assignees
Inventors
Classifications
the arc-extinguishing fluid being air or gas · CPC title
Use of solid insulating compounds resistant to the contacting fluid dielectrics and their decomposition products, e.g. to SF6 · CPC title
- H01H33/22Primary
Selection of fluids for arc-extinguishing · CPC title
Means for extinguishing or suppressing arc (by powder filling H01H85/18; by mechanical tension applied to fusible member H01H85/36) · CPC title
characterised by an insulating tubular gas flow enhancing nozzle (H01H33/7038 takes precedence) · CPC title
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Frequently asked questions
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- What does patent US10373785B2 cover?
- The present disclosure relates to switchgear. Various embodiments may include medium- or high-voltage switchgear with a gas-tight insulating space. For example, a switchgear may include: a gas-tight insulating space where an insulating gas is kept above atmospheric pressure and two switching contacts in the space. At least one of the contacts may movable with respect to a nozzle. The insulating…
- Who is the assignee on this patent?
- Siemens Ag
- What technology area does this patent fall under?
- Primary CPC classification H01H33/22. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 06 2019 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).