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    • 2. 发明授权
    • Circuit breaker having shock-proof trip-actuating assembly
    • 断路器具有防震跳闸驱动组件
    • US4710739A
    • 1987-12-01
    • US885633
    • 1986-07-15
    • Carl J. HeyneNicholas A. Tomasic
    • Carl J. HeyneNicholas A. Tomasic
    • H01H50/32H01H71/10H01H9/00
    • H01H71/1054H01H50/321
    • The trip mechanism of a molded case type circuit breaker is actuated by a plunger that is integral with and axially extends from the end of a reciprocally-movable core member of a solenoid mounted within the breaker housing. The free end of the plunger strikes the trip bar of the breaker when the solenoid is energized in response to a current overload condition in the circuit being protected. The solenoid core member and plunger are mechanically locked in NO-TRIP position by spring-biased keeper means that is automatically released from its "lock" position by the magnetic field generated by the solenoid coil when it is energized. A spring automatically resets the trip-actuating assembly when the current-overload condition has been corrected and the solenoid coil is deenergized. The trip-actuating assembly is not only compact, reliable and inexpensive but is inherently adapted to withstand severe mechanical shocks and impacts, such as those encountered aboard naval vessels, and is thus especially suited for use in circuit breakers that will be employed to protect electrical circuits and equipment subjected to such rough service conditions.
    • 模制箱式断路器的跳闸机构由与安装在断路器壳体内的螺线管的可往复运动的铁芯构件的一端成一体且从其轴向延伸的柱塞致动。 当螺线管响应于被保护的电路中的电流过载状况而被激励时,柱塞的自由端撞击断路器的跳闸杆。 电磁铁芯部件和柱塞通过弹簧偏置的保持器机构机械地锁定在NO-TRIP位置,该保持装置在通电时由螺线管线圈产生的磁场自动从其“锁定”位置释放。 当电流过载条件已经被校正并且螺线管线圈被断电时,弹簧自动复位跳闸致动组件。 跳闸致动组件不仅紧凑,可靠和廉价,而且固有地适应于承受严重的机械冲击和冲击,例如在海军船上遇到的冲击和冲击,因此特别适用于将用于保护电气的断路器 电路和设备遭受这种粗暴的使用条件。
    • 3. 发明授权
    • Magnetic flux shifting ground fault trip indicator
    • 磁通换档接地故障跳闸指示器
    • US4157520A
    • 1979-06-05
    • US628674
    • 1975-11-04
    • Roger D. MoatesNicholas A. TomasicCharles W. Leah
    • Roger D. MoatesNicholas A. TomasicCharles W. Leah
    • H02H3/347G01R31/02H01F7/122H01F7/16H01H71/32H01H83/02H02H3/04H02H3/34H01F7/08
    • H02H3/04H01F7/1615H02H3/34G01R31/025H01F7/122H01H71/322
    • A low energy mechanically driven and electromagnetically actuated ground fault trip indicator is taught. The ground fault trip indicator utilizes the magnetic flux of a permanent magnet in a first flux path to maintain a movable armature biased against a spring. An electromagnet is disposed to provide magnetic flux in opposition to the magnetic flux of the permanent magnet. The electromagnet is not energized for providing the opposing flux until a pulse is received from an appropriate ground fault trip detecting circuit. When the appropriate pulse of energy is applied to the electromagnet, a portion of the flux of the permanent magnet is cancelled allowing the spring to force the armature into a new position. In this position the flux of the permanent magnet is reestablished in a second flux path. When the indicator is in the latter position indication of the occurrence of a ground fault is given.
    • 教授了一种低能量机械驱动和电磁驱动的接地故障跳闸指示器。 接地故障跳闸指示器利用第一磁通路径中的永磁体的磁通量来保持可靠的电枢偏压弹簧。 设置电磁体以提供与永磁体的磁通相反的磁通量。 在从适当的接地故障跳闸检测电路接收到脉冲之前,电磁体不通电以提供相对的磁通。 当适当的能量脉冲施加到电磁体时,永磁体的磁通量的一部分被消除,使得弹簧能够迫使电枢进入新的位置。 在该位置,永久磁铁的通量在第二磁通路径中重新建立。 当指示器处于后一位置时,给出了发生接地故障的指示。
    • 6. 发明授权
    • Circuit interrupter having an insulated bridging contact
    • 具有绝缘桥接触点的断路器
    • US4006439A
    • 1977-02-01
    • US612608
    • 1975-09-11
    • Raymond E. WienEugene H. SeidlingNicholas A. Tomasic
    • Raymond E. WienEugene H. SeidlingNicholas A. Tomasic
    • H01H3/46H01H71/10H01H73/04H01H83/00
    • H01H73/045
    • A circuit interrupter particularly suitable for use in an oil filled distribution transformer having an elongated contact arm pivotable about one end with a movable contact attached to the other end through suitable insulating members to electrically isolate the movable contact from the elongated contact arm. The movable contact is a bridging contact for completing a series circuit through two stationary contacts. The movable bridging contact is spring biased away from the elongated contact arm. A retainer restricts the movement of the bridging contact away from the insulating members attached to the elongated contact arm. The biasing spring is disposed between the insulating members and the retainer. Grooves formed in the sides of the insulating members restrict rotational movement of the retainer and bridging contact. For larger circuit interrupters, a bridging contact assembly can be utilized having a plurality of parallel bridging contacts and a plurality of biasing springs. The elongated contact arm is biased towards an open position when the bridging contact is separate from the stationary contacts, but with the circuit interrupter in the normally closed position is held in a closed position wherein the bridging contact is in engagement with the stationary contact. A latching mechanism which is responsive to a bimetal or magnetic trip to allow the circuit breaker to trip open during overload conditions, holds the elongated contact arm in the closed position.
    • 一种特别适合用于装油配电变压器的电路断路器,其具有可绕一端枢转的细长接触臂,可动接触件通过适当的绝缘构件连接到另一端,以将活动接触件与细长接触臂电隔离。 可移动触点是用于通过两个固定触点完成串联电路的桥接触点。 可移动桥接触头被弹簧偏压远离细长接触臂。 保持器限制桥接接触件远离附接到细长接触臂的绝缘构件的移动。 偏置弹簧设置在绝缘构件和保持器之间。 在绝缘构件的侧面形成的沟槽限制保持器的旋转运动和桥接接触。 对于较大的电路断路器,可以使用具有多个平行桥接触点和多个偏置弹簧的桥接触头组件。 当桥接触头与固定触点分开时,细长的接触臂被偏置到打开位置,而处于常闭位置的电路​​断路器保持在关闭位置,其中桥接触头与固定触点接合。 响应于双金属或磁性跳闸以允许断路器在过载状态下跳闸打开的闭锁机构将细长接触臂保持在关闭位置。