JPS56148470A - Arc welding equipment - Google Patents

Arc welding equipment

Info

Publication number
JPS56148470A
JPS56148470A JP5119980A JP5119980A JPS56148470A JP S56148470 A JPS56148470 A JP S56148470A JP 5119980 A JP5119980 A JP 5119980A JP 5119980 A JP5119980 A JP 5119980A JP S56148470 A JPS56148470 A JP S56148470A
Authority
JP
Japan
Prior art keywords
windings
crater
hence
main transformer
controlling
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
JP5119980A
Other languages
Japanese (ja)
Inventor
Yoshimichi Yasuhara
Akira Kanzaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5119980A priority Critical patent/JPS56148470A/en
Publication of JPS56148470A publication Critical patent/JPS56148470A/en
Pending legal-status Critical Current

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: To perform crater operation at the end of welding easily by dividing at least one winding of a main transformer to two windings of the same number of windings, and connecting these in parallel by way of a switch.
CONSTITUTION: During steady welding, the contacts 11 of an electromagnetic contactor are held closed; hence, the primary windings 10a, 10a' of a main transformer 10 are connected in parallel with the input and therefore the magnetical coupling of the primary windings 10a, 10a' and the secondary windings 10b, 10b' is closer and the leakage reactance is smaller. During crater controlling, the contacts 11 of the electromagnetic contactor are held opened; hence, only the primary winding 10a of the main transformer 10 is connected to the input and therefore the magnetical coupling between the primary windings 10a, 10a'; and the secondary windings 10b, 10b'; is coarser and the leakage reactance is greater. Hence, crater controlling takes place. Consequently, the crater controlling is accomplished easily without inserting any reactor to the AC side, unlike in the prior art.
COPYRIGHT: (C)1981,JPO&Japio
JP5119980A 1980-04-17 1980-04-17 Arc welding equipment Pending JPS56148470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5119980A JPS56148470A (en) 1980-04-17 1980-04-17 Arc welding equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5119980A JPS56148470A (en) 1980-04-17 1980-04-17 Arc welding equipment

Publications (1)

Publication Number Publication Date
JPS56148470A true JPS56148470A (en) 1981-11-17

Family

ID=12880214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5119980A Pending JPS56148470A (en) 1980-04-17 1980-04-17 Arc welding equipment

Country Status (1)

Country Link
JP (1) JPS56148470A (en)

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