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发明公开
CN103824736A 一种具有磁吹灭弧装置的直流断路器 有权

一种具有磁吹灭弧装置的直流断路器
摘要：
本发明公开了一种具有磁吹灭弧装置的直流断路器，包括：主开关、灭弧室(11)和磁吹灭弧装置，所述磁吹灭弧装置包括励磁线圈(7)，其特征在于：所述主开关包括静触头(2)和动触头(4)；所述磁吹灭弧装置位于主开关和灭弧室(11)之间；所述静触头(2)与动触头(4)分离时产生电弧(12)；在所述静触头(2)与动触头(4)分离时，电弧电压作用于励磁线圈(7)两端，磁吹灭弧装置会产生驱动所述电弧(12)至所述灭弧室(11)的磁场。本发明的断路器可以即使在开断小电流时具有安全性，并可实现较大的可靠性以及较长的寿命。
摘要（英）：

The invention discloses a direct current breaker with a magnetic quenching device. The direct current breaker with the magnetic quenching device comprises a main switch, an arc quenching chamber (11) and the magnetic quenching device. The magnetic quenching device comprises a magnet exciting coil (7). The direct current breaker with the magnetic quenching device is characterized in that the main switch comprises a static contact (2) and a movable contact (4); the magnetic quenching device is located between the main switch and the arc quenching chamber (11); an electric arc is generated when the static contact (2) and the movable contact (4) are separated from each other; when the static contact (2) and the movable contact (4) are separated from each other, the electric arc voltage acts on the two ends of the magnet exciting coil (7), and the magnetic quenching device can generate a magnetic field driving the electric arc (12) to move to the arc quenching chamber (11). The direct current breaker can still be safe even when breaking a low current and is high in reliability and long in service life.

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