Arc chamber for a DC circuit breaker
AssigneeABB Schweiz AG
InventorsRudolf Gati, Matthias Bator, Osvaldo Prestini, Pierluigi Cisana, Thorsten Strassel
Life of this patent
Estimating the term…
Abstract
An arc chamber for a DC circuit breaker includes an entry side adapted to receive an electric arc, which was generated outside of the arc chamber and which propagates in a forward direction, a plurality of stacked splitter plates, and at least one inhibitor barrier. The at least one inhibitor barrier is arranged on the entry side to inhibit a reverse propagation of the electric arc out of the arc chamber in a reverse direction. DC circuit breaker comprising an arc chamber. Use of an arc chamber with a circuit breaker in a DC electrical system.
Claims17
A DC circuit breaker comprising:
- an arc chamber,
- wherein the arc chamber comprises:
- an entry side adapted to receive an electric arc which was generated outside of the arc chamber and which propagates in a forward direction;
- a plurality of stacked splitter plates;
- and
- at least two inhibitor barriers arranged on the entry side to inhibit a reverse propagation of the electric arc out of the arc chamber in a reverse direction;
- wherein the at least two inhibitor barriers are arranged, in a top view of the arc chamber, in opposite corner parts on the entry side of the arc chamber, and
- wherein the at least two inhibitor barriers at the corner parts on the entry side of the arc chamber are configured such that a flow of gas cannot pass in the reverse direction beyond an entry area of the arc chamber in a region where the at least two inhibitor barriers are provided,
- an inlet of an exhaust channel in a region of each of the at least two inhibitor barriers,
- wherein the exhaust channel extends to a gas outlet formed on a side of the arc chamber different from the entry side.
Dependencies are inferred from the claim text.