JPS5454348A - Maintaining furnace apparatus making use of a power source transformer in common to other heating furnaces - Google Patents
Maintaining furnace apparatus making use of a power source transformer in common to other heating furnacesInfo
- Publication number
- JPS5454348A JPS5454348A JP12086877A JP12086877A JPS5454348A JP S5454348 A JPS5454348 A JP S5454348A JP 12086877 A JP12086877 A JP 12086877A JP 12086877 A JP12086877 A JP 12086877A JP S5454348 A JPS5454348 A JP S5454348A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- furnace
- source transformer
- transformer
- common
- 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.)
- Pending
Links
Abstract
PURPOSE: To improve the efficiency of operation by connecting heating circuits of a melting furnace and a maintaining furnace each in parallel to a secondary winding of a power source transformer by means of a switch.
CONSTITUTION: A heating circuit 3 of a melting furnace and a heating circuit 4 of a maintaining furnace each are connected in parallel to a secondary winding of a power source transformer 1 by means of primary electromagnetic switches 7, 8 having advancing contacts 7a, 8a. Also, electromagnetic coils of a primary electromagnetic switches 7, 8, power source 16, 18 for exciting circuits, a tertiary electromagnetic switches 13, 14 having ordinarily closed contacts 13a, 14a, and hand contacts 10, 11 are connected in series. A primary winding of the power source transformer 1 and a power source 15 for use in the heating circuits are connected to a secondary electromagnetic switch 9 having an ordinarily open contact. The efficiency of operation may be improved by connecting the maintainng furnace of small rate of operation to the secondary winding of the power source transformer 1 in the melting furnace while carrying out switching of the furnace power source in such conditions as no voltage is applied to the source transformer
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12086877A JPS5454348A (en) | 1977-10-11 | 1977-10-11 | Maintaining furnace apparatus making use of a power source transformer in common to other heating furnaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12086877A JPS5454348A (en) | 1977-10-11 | 1977-10-11 | Maintaining furnace apparatus making use of a power source transformer in common to other heating furnaces |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5454348A true JPS5454348A (en) | 1979-04-28 |
Family
ID=14796935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12086877A Pending JPS5454348A (en) | 1977-10-11 | 1977-10-11 | Maintaining furnace apparatus making use of a power source transformer in common to other heating furnaces |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5454348A (en) |
-
1977
- 1977-10-11 JP JP12086877A patent/JPS5454348A/en active Pending
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