ATE399384T1 - IMPROVED BUCHHOLZ RELAY - Google Patents
IMPROVED BUCHHOLZ RELAYInfo
- Publication number
- ATE399384T1 ATE399384T1 AT99104014T AT99104014T ATE399384T1 AT E399384 T1 ATE399384 T1 AT E399384T1 AT 99104014 T AT99104014 T AT 99104014T AT 99104014 T AT99104014 T AT 99104014T AT E399384 T1 ATE399384 T1 AT E399384T1
- Authority
- AT
- Austria
- Prior art keywords
- buchholz relay
- improved
- type
- flap
- frame
- Prior art date
Links
Classifications
-
- 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
- H01H35/405—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 the switch being of the reed switch type
-
- 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)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Organic Insulating Materials (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
A Buchholz relay comprising, to be immersed in an oil bath, a supporting frame (25) for magnetic switches (29) for closing circuits which are operated by movable devices (32,33), of which at least one (32) is of the floater type and at least one (33) is of the type with a flap rotatably associated with the frame (25). The flap device, which has a surface which is sensitive to the presence of oil currents, is independent of the floaters (32). <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT98PD000059A ITPD980059A1 (en) | 1998-03-19 | 1998-03-19 | BUCHHOLZ TYPE PERFECTED RELAY |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE399384T1 true ATE399384T1 (en) | 2008-07-15 |
Family
ID=11392109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT99104014T ATE399384T1 (en) | 1998-03-19 | 1999-03-12 | IMPROVED BUCHHOLZ RELAY |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0944150B1 (en) |
AT (1) | ATE399384T1 (en) |
DE (1) | DE69938946D1 (en) |
ES (1) | ES2310020T3 (en) |
IT (1) | ITPD980059A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002100385B4 (en) * | 2002-05-15 | 2002-06-20 | John Owen Williams | Modified buchholz relay for continuous monitoring of gas generated by transformer internal faults |
ITVI20070223A1 (en) * | 2007-08-07 | 2009-02-08 | Comem Spa | BUCHHOLZ RELAY FOR THE PROTECTION OF ELECTRIC POWER EQUIPMENT INSULATED IN OIL. |
EP2737499A1 (en) * | 2011-07-25 | 2014-06-04 | ABB Technology AG | Safety apparatus and monitoring method for a power transformer, and related power transformer |
EP2669910B1 (en) * | 2012-05-31 | 2015-07-01 | ABB Technology AG | Safety device for electrical transformers and related electrical transformer |
CN104134576A (en) * | 2014-07-16 | 2014-11-05 | 国家电网公司 | Three-pin reed switch type double-circuit trip node gas relay |
EP3098827B1 (en) * | 2015-05-26 | 2018-10-17 | ABB Schweiz AG | Flow vent adjustable system for buchholz relay |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2952753A (en) * | 1958-06-27 | 1960-09-13 | Mcdonnell & Miller Inc | Flow switch |
BE678625A (en) * | 1965-03-30 | 1966-09-01 | ||
US4282413A (en) * | 1979-07-02 | 1981-08-04 | Grunau Company, Inc. | Liquid flow indicator |
DD207645A3 (en) * | 1982-02-04 | 1984-03-07 | Dietrich Kroll | STORAGE FLAP FOR PROTECTIVE EQUIPMENT |
-
1998
- 1998-03-19 IT IT98PD000059A patent/ITPD980059A1/en unknown
-
1999
- 1999-03-12 ES ES99104014T patent/ES2310020T3/en not_active Expired - Lifetime
- 1999-03-12 AT AT99104014T patent/ATE399384T1/en not_active IP Right Cessation
- 1999-03-12 EP EP99104014A patent/EP0944150B1/en not_active Expired - Lifetime
- 1999-03-12 DE DE69938946T patent/DE69938946D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0944150A2 (en) | 1999-09-22 |
ES2310020T3 (en) | 2008-12-16 |
ITPD980059A1 (en) | 1999-09-19 |
EP0944150B1 (en) | 2008-06-25 |
DE69938946D1 (en) | 2008-08-07 |
EP0944150A3 (en) | 2000-06-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |