Partial discharge charge amount measuring method and device

    公开(公告)号:US09645189B2

    公开(公告)日:2017-05-09

    申请号:US14088209

    申请日:2013-11-22

    IPC分类号: G01R31/12 G01R31/14

    摘要: A partial discharge charge amount measuring method includes generating a partial discharge in a sample by applying a voltage from a voltage impressing device connected to the sample, the voltage being higher than a partial discharge inception voltage, continuously measuring and recording terminal voltages of a capacitor connected in series between the sample and a ground at least until a breakdown of the sample occurs by alternately operating at least two data loggers connected to the capacitor at intervals of a predetermined time, calculating an amount of electric charge discharged from the sample and remaining in the capacitor by multiplying a difference in the recorded terminal voltages of the capacitor by a capacitance of the capacitor, and calculating an accumulated discharge amount by accumulating the discharged amount of electric charge at earliest until the breakdown of the sample occurs.

    Noise reduction cable
    3.
    发明授权

    公开(公告)号:US09659687B2

    公开(公告)日:2017-05-23

    申请号:US15094839

    申请日:2016-04-08

    IPC分类号: H01B11/10

    摘要: A noise reduction cable includes an insulated wire including an insulator and a wire conductor, an outer circumference of which is coated with the insulator, a magnetic-material layer including a magnetic-material-containing member wound around an outer circumference of the insulated wire, a shield layer with which an outer circumference of the magnetic-material layer is coated, a magnetic-material-fixing-and-insulating tape layer that is disposed between the magnetic-material layer and the shield layer. The magnetic-material-fixing-and-insulating tape layer fixes the magnetic-material layer and insulates the magnetic-material layer and the shield layer from each other.

    Shielded Cable
    6.
    发明申请
    Shielded Cable 有权
    屏蔽电缆

    公开(公告)号:US20150228377A1

    公开(公告)日:2015-08-13

    申请号:US14618793

    申请日:2015-02-10

    IPC分类号: H01B11/10 H01B3/30 H01B7/02

    摘要: A shielded cable includes an insulated wire including a conductor wire and an insulation formed around the conductor wire, and a shield layer formed around the insulated wire and including a shield wire. The shield wire includes a tubular member including a conductive material and defining a gap therein, and a magnetic powder is filled in the gap.

    摘要翻译: 屏蔽电缆包括绝缘线,其包括导线和围绕导线形成的绝缘体,以及围绕绝缘电线形成并包括屏蔽线的屏蔽层。 屏蔽线包括包括导电材料并在其中限定间隙的管状构件,并且磁性粉末填充在间隙中。

    Shielded cable
    7.
    发明授权
    Shielded cable 有权
    屏蔽电缆

    公开(公告)号:US09530542B2

    公开(公告)日:2016-12-27

    申请号:US14618793

    申请日:2015-02-10

    IPC分类号: H01B11/06 H01B11/10 H01B3/30

    摘要: A shielded cable includes an insulated wire including a conductor wire and an insulation formed around the conductor wire, and a shield layer formed around the insulated wire and including a shield wire. The shield wire includes a tubular member including a conductive material and defining a gap therein, and a magnetic powder is filled in the gap.

    摘要翻译: 屏蔽电缆包括绝缘线,其包括导线和围绕导线形成的绝缘体,以及围绕绝缘电线形成并包括屏蔽线的屏蔽层。 屏蔽线包括包括导电材料并在其中限定间隙的管状构件,并且磁性粉末填充在间隙中。

    METHOD AND APPARATUS FOR EVALUATING ELECTRICAL WIRE
    10.
    发明申请
    METHOD AND APPARATUS FOR EVALUATING ELECTRICAL WIRE 审中-公开
    用于评估电线的方法和装置

    公开(公告)号:US20150260776A1

    公开(公告)日:2015-09-17

    申请号:US14638976

    申请日:2015-03-04

    IPC分类号: G01R31/02 G01R31/12

    CPC分类号: G01R31/1272

    摘要: A method for evaluating an electrical wire having a conductor and an insulating layer includes: a partial-discharge amount-of-charge determining step of applying, by a voltage application unit, a voltage to the electrical wire to cause partial discharge in the electrical wire and determining an amount of charge owing to the partial discharge; and an evaluation step of evaluating the insulating layer by using a change over time in the amount of charge owing to the partial discharge.

    摘要翻译: 一种用于评估具有导体和绝缘层的电线的方法包括:部分放电量的确定步骤,通过电压施加单元向电线施加电压以在电线中引起局部放电 并确定由于局部放电引起的电荷量; 以及通过使用由于局部放电而导致的电荷量随时间的变化来评估绝缘层的评估步骤。