EP0917171A3 - Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof - Google Patents
Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof Download PDFInfo
- Publication number
- EP0917171A3 EP0917171A3 EP98121200A EP98121200A EP0917171A3 EP 0917171 A3 EP0917171 A3 EP 0917171A3 EP 98121200 A EP98121200 A EP 98121200A EP 98121200 A EP98121200 A EP 98121200A EP 0917171 A3 EP0917171 A3 EP 0917171A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrodes
- vacuum
- breaker
- bulb
- vacuum bulb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP313105/97 | 1997-11-14 | ||
JP31310597 | 1997-11-14 | ||
JP31310597 | 1997-11-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0917171A2 EP0917171A2 (en) | 1999-05-19 |
EP0917171A3 true EP0917171A3 (en) | 1999-07-28 |
Family
ID=18037221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98121200A Withdrawn EP0917171A3 (en) | 1997-11-14 | 1998-11-13 | Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0917171A3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6248969B1 (en) * | 1997-09-19 | 2001-06-19 | Hitachi, Ltd. | Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor |
JP4197702B2 (en) * | 2006-01-31 | 2008-12-17 | 株式会社日立製作所 | Vacuum insulated switchgear |
JP5409739B2 (en) * | 2011-09-27 | 2014-02-05 | 株式会社日立製作所 | Junction structure, electrical contact, and manufacturing method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828428A (en) * | 1972-09-25 | 1974-08-13 | Westinghouse Electric Corp | Matrix-type electrodes having braze-penetration barrier |
US4743718A (en) * | 1987-07-13 | 1988-05-10 | Westinghouse Electric Corp. | Electrical contacts for vacuum interrupter devices |
DE19513790A1 (en) * | 1994-04-11 | 1995-10-19 | Hitachi Ltd | Vacuum switching stage with low pressure valve |
RU2063087C1 (en) * | 1994-03-25 | 1996-06-27 | Товарищество с ограниченной ответственностью "КАНПАК" | Contact manufacturing process for vacuum arc-control chambers |
-
1998
- 1998-11-13 EP EP98121200A patent/EP0917171A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828428A (en) * | 1972-09-25 | 1974-08-13 | Westinghouse Electric Corp | Matrix-type electrodes having braze-penetration barrier |
US4743718A (en) * | 1987-07-13 | 1988-05-10 | Westinghouse Electric Corp. | Electrical contacts for vacuum interrupter devices |
RU2063087C1 (en) * | 1994-03-25 | 1996-06-27 | Товарищество с ограниченной ответственностью "КАНПАК" | Contact manufacturing process for vacuum arc-control chambers |
DE19513790A1 (en) * | 1994-04-11 | 1995-10-19 | Hitachi Ltd | Vacuum switching stage with low pressure valve |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section EI Week 9710, Derwent World Patents Index; Class X13, AN 97-107019, XP002104631 * |
Also Published As
Publication number | Publication date |
---|---|
EP0917171A2 (en) | 1999-05-19 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19990811 |
|
AKX | Designation fees paid |
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|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20040430 |