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    • 4. 发明授权
    • Current limiting circuit breaker
    • 限流断路器
    • US4255732A
    • 1981-03-10
    • US951941
    • 1978-10-16
    • John A. WaferWalter V. BratkowskiWalter W. Lang
    • John A. WaferWalter V. BratkowskiWalter W. Lang
    • H01H73/38H01H71/24H01H71/43H01H71/50H01H73/48H01H75/00H01H77/00
    • H01H71/2418H01H2071/2427H01H71/2472H01H71/501
    • A molded case current limiting circuit interrupter includes a pair of pivoting contact arms each supporting a contact and being connected to wiring terminals such that current flows through the contact arms in opposite directions. One of the contact arms has a movable pivot point. A magnetic drive slot motor device is provided to generate electrodynamic contact opening force upon the contact arms during short circuit conditions. A high-speed magnetic trip device releases the operating mechanism under short circuit conditions to move the arm pivot point before the contact arms reclose. A spring latch may be provided to latch the upper contact arm in a contact-separated position during short circuit conditions until such time as the overcurrent flow through the breaker operates a thermal and magnetic trip mechanism to move an operating mechanism to the tripped position. Alternatively, a cam may be provided which is connected by a link to the upper contact arm and positioned such that upon short circuit conditions the contact opening motion of the upper contact arm caused by electrodynamic repulsion forces will cause the connecting link to rotate the cam and move the armature of the magnetic trip device to actuate the trip mechanism and release the operating mechanism to the tripped position, thereby preventing reclosing of the contact arms before the operating mechanism is able to trip. The operating mechanism includes a bracket to allow normal contact reset yet provide a positive closed contact indication if the contacts are welded together. An anti-rebound contact arm shock absorber is provided which is made of material having a high mechanical hysteresis loop to provide maximum energy dissipation.
    • 模制外壳限流电路断路器包括一对枢转接触臂,每个支撑接触件并连接到接线端子,使得电流沿相反方向流过接触臂。 一个接触臂具有可移动的枢轴点。 提供磁驱动槽电动机装置以在短路条件下产生接触臂上的电动接触开启力。 高速磁力跳闸装置在短路条件下释放操作机构,以在接触臂重新闭合之前移动臂枢轴点。 可以提供弹簧闩锁,以在短路状态下将接触分离的位置锁定在上接触臂上,直到通过断路器的过电流流过热和跳闸机构以将操作机构移动到跳闸位置。 或者,可以设置凸轮,其通过连杆连接到上接触臂并且定位成使得在短路条件下,由电动力排斥力引起的上接触臂的接触开启运动将导致连接杆旋转凸轮, 移动磁力脱扣装置的电枢以致动脱扣机构并将操作机构释放到脱扣位置,从而防止在操作机构能够跳闸之前接触臂的重新闭合。 操作机构包括支架以允许正常的接触复位,但是如果触点被焊接在一起,则提供正的闭合接触指示。 提供了一种抗回弹接触臂减震器,其由具有高机械磁滞回线的材料制成,以提供最大的能量耗散。
    • 8. 发明授权
    • Current limiting circuit interrupter with insulating wedge
    • 带绝缘楔的限流电路断路器
    • US4801772A
    • 1989-01-31
    • US163354
    • 1988-03-02
    • Walter V. BratkowskiJames P. Ellsworth
    • Walter V. BratkowskiJames P. Ellsworth
    • H01H9/32H01H77/10H01H33/06
    • H01H9/32H01H77/10
    • A current limiting circuit interrupter with insulating wedge characterized by a circuit interrupter structure within an insulating housing and having a mechanism for opening and closing separable contacts, the contacts being separately mounted on contact mounting arms that extend in substantially parallel spaced locations to effect current limiting relationship between the arms to cause any arc forming between the opening contacts to blow out of the contacts in a direction away from the spaced contact arms, a dielectric plate-like shutter in the plane extending between the contacts and in the direction opposite the contact arms, the shutter being movable into a gap formed between the separating contacts when the contacts separate, moving mechanism for moving the shutter when the contacts open and reset structure for retracting the shutter when the contacts close.
    • 一种具有绝缘楔形物的限流电路断路器,其特征在于绝缘壳体内具有断路器结构,并且具有用于打开和关闭可分离触点的机构,所述触头分别安装在基本上平行间隔开的​​位置上延伸的接触安装臂上,以实现电流限制关系 在所述臂之间,使得所述开口触点之间的任何电弧形成在远离所述间隔开的接触臂的方向上从所述触头吹出;在所述平面中延伸的所述平面中的电介质板状挡板,并且沿与所述触点臂相反的方向延伸, 当触头分开时,挡板可移动到形成在分离触头之间的间隙中,当触头打开时移动快门的移动机构以及当触点闭合时使快门收回的复位结构。
    • 10. 发明授权
    • Circuit breaker contact operating structure
    • 断路器触点操作结构
    • US5023583A
    • 1991-06-11
    • US260767
    • 1988-10-21
    • Walter V. BratkowskiDaun BhasavanichNorman Davies
    • Walter V. BratkowskiDaun BhasavanichNorman Davies
    • H01H71/10H01H77/10
    • H01H71/1081H01H77/101
    • A circuit breaker contact operating structure characterized by a circuit breaker operating mechanism having separable contacts of which one is mounted on a contact carrying arm. The arm being mounted on a one leg of a U-shaped flexible conductor. A guide link is pivotally mounted and connected to the arm to maintain the contacts in alignment during their separation. The operating mechanism having a latch for latching the arm in the closed-contact position of the arm and having a trip device for unlatching the latch in response to an overcurrent condition. The mechanism link is so placed on the contact arm structure as to effect a blow-on force on the contact structure during the duration of high overcurrent. At a preset current level, the mechanism link is prevented from applying the balancing force to the contact structure, thus allowing the blow-off forces due to the current in the contact structure to separate the contacts rapidly, and to effect current limitation and subsequent circuit interruption.
    • 一种断路器触点操作结构,其特征在于具有可分离触点的断路器操作机构,其中一个触点安装在触点承载臂上。 臂安装在U形柔性导体的一条腿上。 引导连杆可枢转地安装并连接到臂上,以便在分离过程中保持接触对齐。 操作机构具有用于将臂锁定在臂的闭合接触位置中的闩锁,并具有用于响应于过电流条件解锁闩锁的跳闸装置。 机构连杆被放置在接触臂结构上,以在高过电流持续时间内对接触结构产生吹胀力。 在预设的电流水平下,防止机构连杆对接触结构施加平衡力,从而允许由接触结构中的电流引起的吹出力快速分离触点,并实现电流限制和后续电路 中断