Electrical switching device with blow-out channels for arc gases
    1.
    发明授权
    Electrical switching device with blow-out channels for arc gases 失效
    具有电弧气体吹出通道的电气开关装置

    公开(公告)号:US5811749A

    公开(公告)日:1998-09-22

    申请号:US734628

    申请日:1996-10-18

    摘要: An electrical switch is intended to prevent hot arc gases from contacting the terminal screw units. The arc gases are to flow off in an already deionized manner so that no damage is caused even when they flow out towards the electric cable terminals without the need for additional shielding for the terminals. A terminal cover section is designed with blow-out channels which are fully encapsulated with respect to the terminal screws and to the terminal chambers and have an outlet aperture each. To fully encapsulate and provide access to each of the terminal screws, a location dome passes through each blow-out channel. At the points where the through apertures join the quench chambers, the inserted terminal cover section is sealed against the separating wall of the housing in the region of the blow-out channel inlet apertures. The arc gases flow from arc quenching chambers through a partition by way of passage openings. The passage openings open into the blow-out channels, which blow-out channels are wider than the passage openings. Then the arc gases flow through a portion of the blow-out channels narrowed by the presence of the location domes passing through the blow-out channels. As the arc gases pass beyond the location domes, the blow-out channels widen as a result of the absence of the location domes.

    摘要翻译: 电气开关旨在防止热电弧气体接触端子螺丝单元。 电弧气体以已经去离子的方式流出,使得即使当它们向电缆端子流出时也不会造成损坏,而不需要对端子进行额外的屏蔽。 端子盖部分设计有吹出通道,其相对于端子螺钉和端子室完全密封并且具有各自的出口孔。 为了完全封装并提供对每个端子螺钉的访问,位置圆顶通过每个吹出通道。 在通孔接合骤冷室的点处,插入的端子盖部分在吹出通道入口孔的区域中被密封抵靠壳体的分隔壁。 电弧气体通过通过开口的弧形灭弧室流过隔板。 通道开口通向吹出通道,吹出通道比通道开口宽。 然后,电弧气体流过通过穿过吹出通道的定位圆顶的存在而变窄的吹出通道的一部分。 由于电弧气体超过定位圆顶,因为不存在定位圆顶,所以吹出通道变宽。

    Contact system for a current limiting unit
    2.
    发明授权
    Contact system for a current limiting unit 失效
    用于限流单元的接触系统

    公开(公告)号:US5510761A

    公开(公告)日:1996-04-23

    申请号:US322018

    申请日:1994-10-11

    IPC分类号: H01H1/58 H01H77/10 H01H9/00

    摘要: A contact system for current limiting units which are combined with power circuit breakers or motor circuit breakers. The object of the invention is to improve the reliability of the current limiting unit equipped with such a contact system, while reducing the time and effort required to assemble and install such a contact system. The invention teaches that the contact systems can be assembled from a contact carrier with a stationary contact tip and a subsystem preassembled with little force, which can be installed in the arcing chambers in a stable condition and under the force of contact compression springs. The subsystem contains the wiper provided with the moving contact tip, which wiper is mounted with a direct electrical connection to a supply lead. Supports in the subsystem limit the movement of the wiper in both directions. A support block provided with a holding groove and auxiliary groove for the non-positive assembly of the parts connected to the contact compression springs makes it possible to preassemble the subsystem by means of an intermediate state which is also stable.

    摘要翻译: 与电力断路器或电动机断路器组合的限流单元的接触系统。 本发明的目的是提高配备有这种接触系统的限流单元的可靠性,同时减少组装和安装这种接触系统所需的时间和精力。 本发明教导了接触系统可以从具有固定接触尖端的接触载体和预先组装有很小力的子系统组装,其可以在稳定的状态下和在接触压缩弹簧的作用力下安装在电弧室中。 该子系统包含具有可移动接触尖端的擦拭器,该刮水器安装有与电源线直接电连接。 子系统中的支撑限制了雨刷在两个方向上的移动。 具有用于连接到接触压缩弹簧的部件的非正向组件的保持槽和辅助槽的支撑块使得可以通过也是稳定的中间状态来预先组装子系统。