GB726498A - Improvements relating to electric arc furnace control systems - Google Patents
Improvements relating to electric arc furnace control systemsInfo
- Publication number
- GB726498A GB726498A GB20776/53A GB2077653A GB726498A GB 726498 A GB726498 A GB 726498A GB 20776/53 A GB20776/53 A GB 20776/53A GB 2077653 A GB2077653 A GB 2077653A GB 726498 A GB726498 A GB 726498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- tap changer
- rheostat
- ganged
- responsive circuit
- 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
-
- 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
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
- H05B7/148—Automatic control of power
- H05B7/152—Automatic control of power by electromechanical means for positioning of electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Discharge Heating (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
726,498. Automatic control systems for arcs, BRITISH THOMSON-HOUSTON CO., Ltd. July 27, 1953, No. 20776/53. Drawings to Specification. Class 38 (4). The invention is applied to electric arc furnace control systems in which direct voltages, produced through copper-oxide rectifiers in dependence on A.C. are voltage or current, are arranged in opposition to control a D.C. servomotor, e.g. through a magnetic amplifier as in Specification 694,745, moving a furnace electrode to maintain a constant arc current, a tap changer associated with a transformer supplying the electrode being ganged to a rheostat in the voltage responsive circuit so that the voltage dependent on arc voltage is independent of the tap chosen. The following arrangements to produce an arc current dependent on the setting of the tap changer are described: (a) a further rheostat ganged to the tap changer may be substituted for that in the voltage responsive circuit at will by the operation of a change-over switch; (b) an additional rheostat ganged to the tap changer may -be introduced in shunt to the arc current responsive circuit at will by the operation of a change-over switch; (c) an additional rheostat ganged to the tap changer may be introduced in shunt to the arc voltage responsive circuit at will by the operation of a change-over switch; (d) the rheostat in the voltage responsive circuit may be arranged to produce a voltage dependent on the setting of the tap changer. Specification 640,633 also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20776/53A GB726498A (en) | 1953-07-27 | 1953-07-27 | Improvements relating to electric arc furnace control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20776/53A GB726498A (en) | 1953-07-27 | 1953-07-27 | Improvements relating to electric arc furnace control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB726498A true GB726498A (en) | 1955-03-16 |
Family
ID=10151497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20776/53A Expired GB726498A (en) | 1953-07-27 | 1953-07-27 | Improvements relating to electric arc furnace control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB726498A (en) |
-
1953
- 1953-07-27 GB GB20776/53A patent/GB726498A/en not_active Expired
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