High-voltage dc cut-off device

A high-voltage direct current cut-off device, comprising:

• a first terminal and a second terminal;
• a main conduction line which extends between the first and second terminals and which comprises, in series, a main current cut-off apparatus, having a first terminal and a second terminal, and a current limiter configured to limit any current passing through it of which the intensity exceeds a value called the threshold intensity to a value called limited intensity;
• an accumulation line, connected at its two ends to the main conduction line, electrically in parallel with the current limiter, and comprising at least one accumulation capacitor;
• an oscillation line, electrically in parallel with the main cut-off apparatus with respect to the main conduction line, comprising an oscillation control switch and having an inductance;
• wherein all or part of the main conduction line, of the accumulation line and of the oscillation line form, at the terminals of the main cut-off apparatus, an oscillating circuit when the oscillation control switch is brought to a closed state;
• and
• wherein the device has a first operating mode in which the main cut-off apparatus is in a closed state and the oscillation control switch is in an open state, and at least one second operating mode wherein the main cut-off apparatus is commanded to an open state and the oscillation control switch is commanded to a closed state,
• wherein the accumulation line includes at least one first accumulation capacitor and one second accumulation capacitor, and in that the oscillation line extends from a branch connection point of the accumulation line situated between the two accumulation capacitors, determining a primary segment and a secondary segment of the accumulation line, the secondary segment being connected to the main conduction line between the current limiter and the main cut-off apparatus so as to form part of the oscillation circuit.