Method for generating a trip current for triggering an electrical protection element
US10581236B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2017 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of generating a trip current by a power supply device has electrical components and for the purpose of tripping a protection element connected between a load and the power supply device. In response to detecting an electrical fault situation in the power supply device, in order to eliminate the short-circuit fault with shortened tripping time, an AC trip current is generated having: for a first period of the signal, a current amplitude equal to the maximum current amplitude that can be withstood by the electrical components of the power supply device; and for the following periods, a current amplitude that decreases as a function of the thermal inertia of the electrical components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.