GB750372A - Improvements in or relating to alternating current arc welding equipment - Google Patents
Improvements in or relating to alternating current arc welding equipmentInfo
- Publication number
- GB750372A GB750372A GB3527653A GB3527653A GB750372A GB 750372 A GB750372 A GB 750372A GB 3527653 A GB3527653 A GB 3527653A GB 3527653 A GB3527653 A GB 3527653A GB 750372 A GB750372 A GB 750372A
- Authority
- GB
- United Kingdom
- Prior art keywords
- choke
- reactor
- relay
- voltage drop
- contacts
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1012—Power supply characterised by parts of the process
- B23K9/1031—Reduction of the arc voltage beneath the arc striking value, e.g. to zero voltage, during non-welding periods
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
750,372. Supply systems for welding arcs. LINCOLN ELECTRIC CO., Ltd., and HATTY, W. P. H. June 28, 1954 [Dec. 18, 1953], No. 35276/53. Class 38 (4). To permit the employment of a transformer 1 of relatively low open circuit voltage in an A.C. arc welding system having a choke 7 in the welding circuit 5, 8, the voltage drop across the choke during striking of the arc is reduced by shunting the choke with an impedance (preferably of lower value than that of the choke), such as a tapped reactor 24, under the control of a relay 10, 11 responsive to the voltage drop across the choke. As shown, the relay 10, 11 controls the connection of the reactor to the choke through a D.C. contactor 17, 25 supplied over a rectifier 15 from an auxiliary winding of transformer 1. In operation, when the welding circuit is open, there is no voltage drop across the choke so that relay coil 10 is not energized and its contacts 11, which are normally closed, complete an energizing circuit for contactor coil 17. Contacts 25 are consequently closed and connect the reactor across the choke. On striking an arc, relay 10, 11 is operated by the voltage drop across the choke and contacts 11, 25 consequently open to disconnect the reactor. The contactor 17, 25 is preferably made slow to release.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3527653A GB750372A (en) | 1953-12-18 | 1953-12-18 | Improvements in or relating to alternating current arc welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3527653A GB750372A (en) | 1953-12-18 | 1953-12-18 | Improvements in or relating to alternating current arc welding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB750372A true GB750372A (en) | 1956-06-13 |
Family
ID=10375889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3527653A Expired GB750372A (en) | 1953-12-18 | 1953-12-18 | Improvements in or relating to alternating current arc welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB750372A (en) |
-
1953
- 1953-12-18 GB GB3527653A patent/GB750372A/en not_active Expired
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