Capacitive signal coupler
    1.
    发明授权
    Capacitive signal coupler 失效
    电容信号耦合器

    公开(公告)号:US4451870A

    公开(公告)日:1984-05-29

    申请号:US443565

    申请日:1982-11-22

    CPC classification number: G01R31/343 H02K11/20

    Abstract: A capacitive signal coupler for use with a large dynamoelectric machine for coupling signals indicative of corona discharge from the stator bars to a monitor system is combined with an end cap made to fit over the connector extending between two stator bars. The end cap has a high voltage capacitor encapsulated in its walls. One lead from the capacitor is fastened to the connector with a screw before the end cap is installed. The other lead projects from the end cap and is connected to one terminal of a high voltage fuse. The fuse is secured to the end cap. The other terminal of the fuse is adapted to be connected to a cable leading to a monitor system. The coupler is preferably fastened to the lower end of the conductors of a vertical dynamoelectric machine where there is a full range of choice of location in the circuit voltages from line to neutral in two bar steps. The end cap is epoxy sealed in place to make an installation requiring little more space than the installation of a normal end cap.

    Abstract translation: 用于与指示从定子线圈到监视器系统的电晕放电的信号耦合的用于大型电动机的电容式信号耦合器与制造成配合在两个定子条之间延伸的连接器上的端盖组合。 端盖具有封装在其壁中的高压电容器。 在安装端盖之前,使用螺丝将电容器的一根导线固定在连接器上。 另一个引线从端盖突出,并连接到高压保险丝的一个端子。 保险丝固定在端盖上。 保险丝的另一个端子适于连接到通向监视器系统的电缆。 耦合器优选地紧固到垂直电动机的导体的下端,其中在两个步骤中线路到中性的电路电压中存在全部选择的位置。 端盖是环氧树脂密封在适当位置,以安装需要比安装正常端盖更多的空间。

    Grounding of outer winding insulation to cores in dynamoelectric machines
    2.
    发明授权
    Grounding of outer winding insulation to cores in dynamoelectric machines 失效
    外接绝缘导线在电动机中的接地

    公开(公告)号:US4001616A

    公开(公告)日:1977-01-04

    申请号:US548835

    申请日:1975-02-10

    CPC classification number: H02K3/40 Y10S174/20 Y10S174/28 Y10S174/30 Y10T428/25

    Abstract: According to the invention electrically conductive paths are provided between the coil armor and the core laminations of dynamoelectric machines by placing a semiconducting elastomeric material between the coil sides and the walls of the core slots. The elastomeric material is of a type which has a controlled resistance and will deform sufficiently under pressure to flow into the irregularities between the coil side and the slot walls, and in so doing provide conductive paths for electric charge to flow from the armor to the core laminations. This material must be capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibration, coolant flow, electric stresses, repeated temperature changes, etc., for the operating life of the machine. Preferably, these paths will be heat conductors as well.

    Corona inhibition in dynamoelectric machines
    3.
    发明授权
    Corona inhibition in dynamoelectric machines 失效
    电动机中的电晕抑制

    公开(公告)号:US4095627A

    公开(公告)日:1978-06-20

    申请号:US656791

    申请日:1976-02-10

    CPC classification number: H02K3/40 H02K15/12

    Abstract: According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semiconducting, elastomeric material between the coil sides and slot walls through the use of an injector tool inserted between them, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure into these spaces, and when cured it has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.

    Abstract translation: 根据本发明,在线圈护套和用于抑制电晕的电动机的铁芯叠片之间形成导电路径。 这通过使用插入它们之间的注射器工具在线圈侧和槽壁之间注入未固化的半导体弹性体材料,然后固化材料来实现。 未固化的材料具有使其能够在压力下被压在这些空间中的粘度,并且当其固化时,其具有足够高的电阻,不能在叠片之间形成涡流路径,并且仍然足够低以将电荷从线圈装甲传导到芯。 在机器的正常使用寿命期间,它还能够保持其强度,弹性,导电性等,并且在振动,冷却剂流动,电应力,重复的温度变化等下保持在线圈和芯之间的适当位置。

    Method for reducing corona in dynamoelectric machines
    4.
    发明授权
    Method for reducing corona in dynamoelectric machines 失效
    减少电动机电晕的方法

    公开(公告)号:US4112041A

    公开(公告)日:1978-09-05

    申请号:US791663

    申请日:1977-04-28

    CPC classification number: H01T19/02 H02K15/12 H02K3/40 Y10T29/49009

    Abstract: According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semi-conducting, elastomeric material between the coil sides and the walls of the core slots by way of the air ducts in the core, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure between the coil sides and slot walls by means of a pneumatically actuated gun assembly whose construction and operation are described in detail. The cured material has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.

    Abstract translation: 根据本发明,在线圈护套和用于抑制电晕的电动机的铁芯叠片之间形成导电路径。 这是通过在线圈侧和芯槽的壁之间通过芯中的空气管道注入未固化的,半导电的弹性体材料,然后固化材料来实现的。 未固化的材料具有使其能够通过气动致动的枪组件在线圈侧和槽壁之间的压力下被强制施加的粘度,其结构和操作被详细描述。 固化的材料具有足够高的电阻,不能在叠片之间形成涡流路径,并且足够低以将电荷从线圈护套传导到芯。 在机器的正常使用寿命期间,它还能够保持其强度,弹性,导电性等,并且在振动,冷却剂流动,电应力,重复的温度变化等下保持在线圈和芯之间的适当位置。

    Corona inhibition in dynamoelectric machines
    5.
    发明授权
    Corona inhibition in dynamoelectric machines 失效
    动力电机中的CORONA抑制

    公开(公告)号:US4110900A

    公开(公告)日:1978-09-05

    申请号:US842757

    申请日:1977-10-17

    CPC classification number: H02K15/12 H02K3/40 Y10T29/49009

    Abstract: According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semiconducting, elastomeric material between the coil sides and slot walls through the use of an injector tool inserted between them, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure into these spaces, and when cured it has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.

    Apparatus for injecting elastomeric material
    6.
    发明授权
    Apparatus for injecting elastomeric material 失效
    用于注射弹性材料的装置

    公开(公告)号:US4068691A

    公开(公告)日:1978-01-17

    申请号:US656865

    申请日:1976-02-10

    CPC classification number: H02K15/12 H02K3/40

    Abstract: According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semi-conducting, elastomeric material between the coil sides and the walls of the core slots by way of the air ducts in the core, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure between the coil sides and slot walls. The cured material has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.

Patent Agency Ranking