Two-electric-pole circuit breaker actuated by a common pyrotechnic device
AssigneeSafran Electrical & Power
InventorsCecil Beltan, Kévin Enouf, Guillaume Prieur, Arnaud Badault
Life of this patent
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Abstract
Two electric poles are controlled in one and the same circuit breaker by an undivided opening mechanism controlled by a pyrotechnic actuator. The opening of the circuit that is brought about by this actuator, which is fast for a large opening travel of the mobile contacts, makes it possible to extinguish electric arcs under good conditions. The poles may be placed in series on one and the same electrical circuit in order to reduce the potential difference across the terminals of each of them, thereby further increasing the effectiveness of the circuit breaker in terms of arc extinguishing.
Claims9
Electric cutoff device, comprising:
- two electric poles, each of the poles comprising at least a fixed contact and a mobile contact, which is mobile between a closing state in which the mobile contact touches the fixed contact, and an opening state in which the mobile contact is separated from the fixed contact;
- a pyrotechnic actuator for switching the mobile contacts from the closing state to the opening state;
- characterised by:
- a linking part for linking the mobile contacts, said linking part being connected to the pyrotechnic actuator by a transmission;
- stops carried by the linking part, distant from the mobile contacts in the closing state and respectively engaged with the mobile contacts in the opening state;
- wherein the stops being placed on the linking part so as to be engaged simultaneously with the mobile contacts, and wherein the linking part is a rectilinear rod, the stops are spread out on the rod, and the mobile contacts are aligned in a direction of the rod.
Dependencies are inferred from the claim text.