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 furnaces

Info

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
Application number
JP12086877A
Other languages
Japanese (ja)
Inventor
Shoichi Kano
Noboru Hiraoka
Yasuo Otake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP12086877A priority Critical patent/JPS5454348A/en
Publication of JPS5454348A publication Critical patent/JPS5454348A/en
Pending legal-status Critical Current

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
JP12086877A 1977-10-11 1977-10-11 Maintaining furnace apparatus making use of a power source transformer in common to other heating furnaces Pending JPS5454348A (en)

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)

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