Mersen France Sb Sas

Franck Sarrus

Jean-François De Palma

Dominique Tournier

Laurent Milliere

Philippe Godignon

Florent Balboni

Thierry Rambaud

Fuse, including at least one fuse blade, formed in a sheet having two opposite main faces extending along a longitudinal axis of the fuse blade, each fuse blade comprising a portion having a reduced section defining a plane transverse to the fuse blade. The fuse also includes arc guards made of a preformed elastic material and associated in pairs, the arc guards of the same pair being each located opposite one another on a respective main face of the same fuse blade. For at least a first pair of arc guards, a layer of adhesive is interposed between the fuse blade and an internal face of each arc guard of this pair, the internal face being oriented towards one of the main faces of the fuse blade, so as to fix each arc guard on the fuse blade.

Fuse and associated manufacturing process

Fuse, comprising at least one fuse blade in which is formed a reduced section (A) defining a plane (P) transverse to the fuse blade. The fuse also comprises arc guards, which are made of an elastic material and which are associated in pairs, the arc guards of the same pair being each disposed opposite one another on one respective main side of the same fuse blade. Each arc guard comprises an internal face, oriented towards the fuse blade, a front face, oriented towards the reduced section, and a rear face, oriented away from the reduced section. At least one perforation is made in the fuse blade in the vicinity of the reduced section, each perforation being at least partially closed by the internal faces of the two arc guards of the same pair, each perforation leaving a cavity between the two arc guards of the same pair.

The invention pertains to a DC current interruption system able to open a DC line with inductive behavior, comprising a primary mechanical breaker (S), a secondary mechanical breaker (S) and an electronic overvoltage protection circuit (B, B) comprising at least one transistor. The DC current interruption system of the invention furthermore comprises an electronic opening system () comprising a passive circuit able to auto-bias the electronic protection circuit (B, B) upon the opening of said primary mechanical breaker (S), so as to trigger a switching of said at least one transistor (M, M, IG) making it possible to limit the voltage and the current in the DC line, total interruption of said DC line being obtained by subsequent opening of said secondary mechanical breaker (S).

DC current interruption system able to open a DC line with inductive behaviour

A system for supplying direct current and DC voltage is provided. The system comprise a first supply branch having a first DC voltage source and a power field-effect transistor of a current limiter which are connected in series, and a second supply branch having a second DC voltage source. The power transistor has a current/voltage characteristic with a first inverse polarization area without current limitation, and a second conduction area with current limitation based on a current threshold. The power field-effect transistor is connected to the first voltage source with an inverse polarization when the voltage source of the first branch is operating normally.

Growing community of inventors

Saint Laurent de Mure, France

Franck Sarrus