GB1123200A - Detection of faults in electrical induction furnaces - Google Patents
Detection of faults in electrical induction furnacesInfo
- Publication number
- GB1123200A GB1123200A GB53172/65A GB5317265A GB1123200A GB 1123200 A GB1123200 A GB 1123200A GB 53172/65 A GB53172/65 A GB 53172/65A GB 5317265 A GB5317265 A GB 5317265A GB 1123200 A GB1123200 A GB 1123200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- cover
- relay
- turns
- indicator
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
- H05B6/28—Protective systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- General Induction Heating (AREA)
- Furnace Details (AREA)
Abstract
1,123,200. Protective arrangements. ALLMANNA SVENSKA ELEKTRISKA A.B. 15 Dec., 1965 [16 Dec., 1964], No. 53172/65. Heading H2K. To protect against short circuits between the turns 12 . . . 15 of a coil of an induction furnace 11, the coil turns are wholly or partly surrounded by a conducting sheath or cover 17 which is insulated from the coil between its ends. At one end the sheath or cover is directly connected by 18 to the corresponding end of the coil and at the other end is connected through a relay 20 and/or a fault indicator 19 to the other end of the coil. Normally there is substantially no potential across the relay and/or the indicator, but when a fault occurs, short circuiting of turns of the cover results in unbalance between the voltages across the coil and cover and the relay and/or indicator are energized.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE15196/64A SE313129B (en) | 1964-12-16 | 1964-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1123200A true GB1123200A (en) | 1968-08-14 |
Family
ID=20300294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB53172/65A Expired GB1123200A (en) | 1964-12-16 | 1965-12-15 | Detection of faults in electrical induction furnaces |
Country Status (5)
Country | Link |
---|---|
US (1) | US3414660A (en) |
DE (1) | DE1565284B2 (en) |
FR (1) | FR1469037A (en) |
GB (1) | GB1123200A (en) |
SE (1) | SE313129B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3780250A (en) * | 1971-11-02 | 1973-12-18 | Chisso Corp | Apparatus for heating the surface of constructions |
SE372870B (en) * | 1973-05-18 | 1975-01-13 | Asea Ab | |
US4486641A (en) * | 1981-12-21 | 1984-12-04 | Ruffini Robert S | Inductor, coating and method |
US5418811A (en) * | 1992-04-08 | 1995-05-23 | Fluxtrol Manufacturing, Inc. | High performance induction melting coil |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1801791A (en) * | 1930-03-05 | 1931-04-21 | Westinghouse Electric & Mfg Co | Induction-furnace protective circuits |
US2614200A (en) * | 1950-08-11 | 1952-10-14 | Western Electric Co | Leak detector for immersion heaters |
US2990542A (en) * | 1958-04-11 | 1961-06-27 | Ajax Magnethermic Corp | Protective device for induction furnaces |
US3185894A (en) * | 1960-08-17 | 1965-05-25 | Asea Ab | Means for indicating faults in the crucible of induction melting furnaces |
GB1031932A (en) * | 1962-04-09 | 1966-06-02 | Asea Ab | A protective device for a super-conductor |
-
1964
- 1964-12-16 SE SE15196/64A patent/SE313129B/xx unknown
-
1965
- 1965-11-29 US US510245A patent/US3414660A/en not_active Expired - Lifetime
- 1965-12-02 DE DE19651565284 patent/DE1565284B2/en active Pending
- 1965-12-15 FR FR42345A patent/FR1469037A/en not_active Expired
- 1965-12-15 GB GB53172/65A patent/GB1123200A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3414660A (en) | 1968-12-03 |
FR1469037A (en) | 1967-02-10 |
DE1565284A1 (en) | 1970-01-15 |
SE313129B (en) | 1969-08-04 |
DE1565284B2 (en) | 1971-10-07 |
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