JPS5677069A - Method of preventing electric shock from welding power source in start switch operation - Google Patents
Method of preventing electric shock from welding power source in start switch operationInfo
- Publication number
- JPS5677069A JPS5677069A JP15290179A JP15290179A JPS5677069A JP S5677069 A JPS5677069 A JP S5677069A JP 15290179 A JP15290179 A JP 15290179A JP 15290179 A JP15290179 A JP 15290179A JP S5677069 A JPS5677069 A JP S5677069A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- electric shock
- welding power
- welding
- start switch
- 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
Landscapes
- Arc Welding Control (AREA)
Abstract
PURPOSE: To prevent electric shock accident even under the adverse condition of the degradation in insulation by incorporating a start switch into the conventional electric shock preventing device and applying a no-load voltage across the output terminals of the welding power source by the start signal.
CONSTITUTION: The welder and diver who entered the chamber 2 inside from an underwater elevator hold a torch 19 and turn ON a start switch 20 while making communication with a supporting ship 1. Thereupon, a no-load voltage of ≤25V is applied by this start signal control to the output terminals of the electric shock preventing device of a power source 7 via control cables 17', 17 and a repeater box 15. When the welder abuts the torch 19 on the weld zone 5, said contact voltage or the change amount in current is detected via a control unit 9 which in turn starts welding power source 7 to apply arc voltage to the terminals, whereby the welding is accomplished. When the welding is finished, the welding power source is turned OFF with a delay of a predetermined time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15290179A JPS5677069A (en) | 1979-11-28 | 1979-11-28 | Method of preventing electric shock from welding power source in start switch operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15290179A JPS5677069A (en) | 1979-11-28 | 1979-11-28 | Method of preventing electric shock from welding power source in start switch operation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5677069A true JPS5677069A (en) | 1981-06-25 |
Family
ID=15550603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15290179A Pending JPS5677069A (en) | 1979-11-28 | 1979-11-28 | Method of preventing electric shock from welding power source in start switch operation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5677069A (en) |
-
1979
- 1979-11-28 JP JP15290179A patent/JPS5677069A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU582557B2 (en) | Process for the control of the welding time of an electrical welded union | |
SE7501230L (en) | ||
DE3561135D1 (en) | Very low power plasma-cutting equipment | |
IT1191365B (en) | Control circuit for plasma arc cutting and welding torch | |
JPS5677069A (en) | Method of preventing electric shock from welding power source in start switch operation | |
ES8500109A1 (en) | Automatic electric welding system for maintaining uniform heat in a welding operation | |
JPS5717381A (en) | Arc welding method | |
JPS54124850A (en) | Position correction of torch for automatic arc welder | |
JPS5732450A (en) | Copying machine | |
JPS5516721A (en) | Non-consumable electrode type multiple electrode arc welding process and apparatus | |
JPS56134078A (en) | Consumable electrode type gas shielded arc welding method | |
JPS55156673A (en) | Automatic welding equipment | |
JPS53104549A (en) | Arc welder | |
JPS57202974A (en) | Controlling method for arc welding machine using consumable electrode | |
JPS5639181A (en) | Quality assurance of resistance welded part and its check method | |
JPS5650784A (en) | Arc welder | |
JPS57181771A (en) | Controlling method for automatic arc welding | |
JPS57121878A (en) | Controller for arc welding robot | |
JPS641425A (en) | Inverter protection circuit | |
JPS5577976A (en) | Pulse arc welding method | |
JPS536255A (en) | Arc starting method for pulsed mig welder | |
RO102802A2 (en) | Source of current for welding and electric cutting under water | |
JPS56131067A (en) | Arc welding | |
JPS5611179A (en) | Arc voltage control unit | |
JPS6415285A (en) | Pulse arc welding machine |