Undervoltage release and circuit breaker incorporating same
    1.
    发明授权
    Undervoltage release and circuit breaker incorporating same 有权
    欠压脱扣器和合闸相结合的断路器

    公开(公告)号:US07369021B2

    公开(公告)日:2008-05-06

    申请号:US11219113

    申请日:2005-09-02

    IPC分类号: H01F83/00

    CPC分类号: H01H83/12 H01H71/0228

    摘要: The reset lever on a circuit breaker undervoltage relay is actuated by translating arcuate movement of a handle arm pin as the circuit breaker handle is moved to the off position into rotation of the reset lever through a complaint interface lever that is stiff enough to actuate the reset lever, but flexible enough to accommodate for overtravel of the handle arm pin when the circuit breaker is reset and for the stackup of tolerances in the operating mechanism.

    摘要翻译: 断路器欠压继电器上的复位杆通过转动手柄臂销的弓形运动来致动,因为断路器手柄通过刚性足以致动复位的抱死接口杆移动到关闭位置,使复位杆转动 杠杆,但足够灵活以适应当断路器复位时手柄臂销的超程,并且用于操作机构中的容差叠加。

    Circuit breaker with dial indicator for magnetic trip level adjustment
    3.
    发明授权
    Circuit breaker with dial indicator for magnetic trip level adjustment 有权
    断路器带拨号指示器,用于磁跳闸电平调节

    公开(公告)号:US06747534B1

    公开(公告)日:2004-06-08

    申请号:US09376254

    申请日:1999-08-18

    IPC分类号: H01H7510

    CPC分类号: H01H71/74 H01H21/50

    摘要: This concerns a molded case circuit breaker having separable main contacts and an operating mechanism utilized to cause the separable main contacts to open and close. A trip unit is provided to actuate the operating mechanism in desirable circumstances. The trip unit has a magnetic trip level adjustment dial, which has an adjustment face with a series of detents therein. The dial has a cam service, which interacts with internal portions of the trip unit to set or calibrate the level at which a magnetic trip actuation occurs. The aforementioned detent interacts with a spring loaded L-shaped member which fits into the casing of the trip unit along with the dial as a single unit.

    摘要翻译: 这涉及具有可分离的主触头的模制外壳断路器和用于使可分离的主触头打开和关闭的操作机构。 提供跳闸单元以在期望的情况下致动操作机构。 跳闸单元具有磁跳闸电平调节表盘,其具有在其中具有一系列制动器的调节面。 表盘具有凸轮服务,其与脱扣单元的内部部分相互作用,以设置或校准发生磁脱扣致动的水平。 上述制动器与弹簧加载的L形构件相互作用,该L形构件作为单个单元与表盘一起装配到脱扣单元的壳体中。

    Three phase throttle current technique
    4.
    发明授权
    Three phase throttle current technique 失效
    三相节流电流技术

    公开(公告)号:US5519558A

    公开(公告)日:1996-05-21

    申请号:US176157

    申请日:1993-12-30

    CPC分类号: H02H9/026 H02H3/025

    摘要: A current throttle resistor external to a contactor device protects an electrical power distribution circuit coupling a load to a power line. The contactor has electrical switching contacts in series with the load and the line, and for example, an electromagnetically controllable switch for opening the contacts. A current sensor is coupled to the controllable switch for opening of the contacts upon occurrence of a high current fault in the power distribution circuit exceeding a predetermined threshold. A resistive element in series with the power distribution circuit between the line and the load, provides a voltage drop for limiting current during the high current fault. The resistive element can be a nichrome strip or similar positive temperature coefficient resistance having a low cool resistance, and is thermally isolated from the controllable switch by mounting in a resistor housing external to the contactor. To maximize resistance and minimize space, the nichrome strip is bent in an elliptical arc between two leads that protrude from the resistor housing, for coupling into the circuit on the load side of the contactor.

    摘要翻译: 接触器装置外部的电流节流电阻保护将负载耦合到电力线的电力分配电路。 接触器具有与负载和线路串联的电开关触点,例如用于打开触点的电磁可控开关。 电流传感器耦合到可控开关,用于在功率分配电路中发生超过预定阈值的高电流故障时触发触点。 与线路和负载之间的配电电路串联的电阻元件在高电流故障期间提供用于限制电流的电压降。 电阻元件可以是具有低冷电阻的镍铬合金带或类似的正温度系数电阻,并且通过安装在接触器外部的电阻器壳体中而与可控开关热隔离。 为了最大限度地发挥电阻并使空间最小化,镍铬合金带在从电阻器壳体突出的两个引线之间的椭圆弧中弯曲,用于耦合到接触器的负载侧的电路中。