ATE399385T1 - IMPROVED GAS STORAGE BUCHWOOD RELAY - Google Patents
IMPROVED GAS STORAGE BUCHWOOD RELAYInfo
- Publication number
- ATE399385T1 ATE399385T1 AT99104056T AT99104056T ATE399385T1 AT E399385 T1 ATE399385 T1 AT E399385T1 AT 99104056 T AT99104056 T AT 99104056T AT 99104056 T AT99104056 T AT 99104056T AT E399385 T1 ATE399385 T1 AT E399385T1
- Authority
- AT
- Austria
- Prior art keywords
- relay
- buchwood
- float
- gas storage
- improved gas
- Prior art date
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
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/55—Oil reservoirs or tanks; Lowering means therefor
- H01H33/555—Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/40—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Level Indicators Using A Float (AREA)
- Organic Insulating Materials (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
A gas-accumulation Buchholz relay, which comprises, to be immersed in an oil bath, a supporting frame (23) for magnetic switches (27) for closing circuits and at least one movable device (28,29) of the float type for actuating the switches. The relay is characterized in that the float (30) is of the lever type with a rotation axis which is fixed to the frame (23) and is operatively connected to a magnet holder which acts as a counterweight. The float (30) is articulated in its rotation with respect to the magnet holder through a given angle. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT98PD000061A ITPD980061A1 (en) | 1998-03-24 | 1998-03-24 | BUCHHOLZ TYPE IMPROVED GAS STORAGE RELAY |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE399385T1 true ATE399385T1 (en) | 2008-07-15 |
Family
ID=11392112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT99104056T ATE399385T1 (en) | 1998-03-24 | 1999-03-17 | IMPROVED GAS STORAGE BUCHWOOD RELAY |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0945951B1 (en) |
AT (1) | ATE399385T1 (en) |
DE (1) | DE69938948D1 (en) |
ES (1) | ES2310021T3 (en) |
IT (1) | ITPD980061A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103620719B (en) * | 2011-06-22 | 2016-07-13 | 赖茵豪森机械制造公司 | Buchholz relay |
PL2688081T3 (en) * | 2012-07-20 | 2016-06-30 | Abb Schweiz Ag | Safety device for a power transformer, and related power transformer using such a safety device |
CN103681099B (en) * | 2013-12-11 | 2015-10-14 | 国家电网公司 | A kind of Buchholz relay with Long-distance Control |
CN105826128B (en) * | 2015-01-07 | 2018-06-19 | 国家电网公司 | Multi-functional double float gas relays |
CN112038172B (en) * | 2020-07-15 | 2023-03-10 | 国网山东省电力公司青岛供电公司 | Gas relay automatic exhaust device, exhaust method and gas relay |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1012247A (en) * | 1949-07-15 | 1952-07-07 | Trist & Co Ltd Ronald | Improvements to float-controlled magnetic devices |
BE678625A (en) * | 1965-03-30 | 1966-09-01 | ||
US5426271A (en) * | 1994-01-18 | 1995-06-20 | Honeywell Inc. | Liquid level sensor |
-
1998
- 1998-03-24 IT IT98PD000061A patent/ITPD980061A1/en unknown
-
1999
- 1999-03-17 DE DE69938948T patent/DE69938948D1/en not_active Expired - Lifetime
- 1999-03-17 EP EP99104056A patent/EP0945951B1/en not_active Expired - Lifetime
- 1999-03-17 ES ES99104056T patent/ES2310021T3/en not_active Expired - Lifetime
- 1999-03-17 AT AT99104056T patent/ATE399385T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0945951A2 (en) | 1999-09-29 |
EP0945951A3 (en) | 2000-06-07 |
ES2310021T3 (en) | 2008-12-16 |
DE69938948D1 (en) | 2008-08-07 |
EP0945951B1 (en) | 2008-06-25 |
ITPD980061A1 (en) | 1999-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |