Methods and devices for responding to high primary supply voltages of welding systems
US8796585B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2010 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Dec 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Methods and devices for controlling a welding power source based on a primary supply voltage level are provided. One method may include sensing activation of the welding power source and sensing a primary supply voltage established on a control transformer of the welding power source. The method may also include establishing a substantial current draw from a primary power supply that exceeds a predefined current threshold when the sensed primary supply voltage exceeds a predefined voltage threshold. The substantial current draw may be adapted to trip a circuit breaker of the welding power source to disallow current through the welding power source when the sensed primary supply voltage exceeds the predefined voltage threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.