Method for generating a short-circuit current for triggering an electrical protection element
AssigneeSocomec
InventorPascal BOOS
Life of this patent
Estimating the term…
Abstract
A method of generating a short-circuit 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 short-circuit 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.
Claims11
-10. (canceled)
A method of generating a short-circuit current by a power supply device having electrical components and for the purpose of tripping a protection element connected between a load and said power supply device,
- wherein, in response to detecting an electrical fault situation in the power supply device, an AC short-circuit current is generated having:
- for a first period of said signal, a current amplitude equal to the maximum current amplitude that can be withstood by the electrical components of said power supply device;
- and
- for the following periods, a current amplitude that decreases as a function of the thermal inertia of said electrical components.
A power supply device comprising terminals for connection to a load, terminals for connection to an electricity power supply network, electrical components, and a protection control unit configured to generate a short-circuit current for causing a protection element that is connected between said load and said power supply device to trip,
- wherein the protection control unit is configured to respond to an electrical fault situation being detected in the power supply device by delivering an AC short-circuit signal having:
- for a first period of said signal, a current amplitude equal to the maximum current amplitude that can be withstood by the electrical components of said power supply device;
- and
- for the following periods, a current amplitude that decreases as a function of the thermal inertia of said electrical components.
Dependencies are inferred from the claim text.