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    • 1. 发明专利
    • 絶縁電線
    • 绝缘线
    • JP2014238927A
    • 2014-12-18
    • JP2013119728
    • 2013-06-06
    • 日立金属株式会社Hitachi Metals Ltd
    • HONDA YUKIFUNAYAMA YASUHIROKIKUCHI HIDEYUKI
    • H01B7/02C09D5/25C09D179/08C09D201/00H01B7/00H01F5/06H01F27/28
    • H01B3/308H01B3/306H01B13/065H02K3/32H02K2213/03
    • 【課題】捻じり等の加工が施されても絶縁被膜にクラックが発生しにくい絶縁電線を提供する。【解決手段】角部が円弧状に形成された略矩形の断面形状を有する平角導体と、平角導体の外周を被覆するように塗布された絶縁塗料が加熱されて形成され、外周方向に最厚部および最薄部を有する絶縁被膜と、を備え、平角導体は、断面形状において、角部の曲率半径が0.6mm以下、かつ幅方向の短辺L1と長手方向の長辺L2との比率L2/L1が2.0以下であり、絶縁被膜の外周方向における最厚部の膜厚をd1、最薄部の膜厚をd2としたとき、その比率d1/d2が1.3以下の絶縁電線である。【選択図】図1
    • 要解决的问题:提供一种绝缘线,即使在经受加工时也导致绝缘膜的破裂较少。 扭绞。绝缘线包括直角导体,其角部分为弧形并且具有近似矩形的横截面形状,以及绝缘膜,该绝缘膜通过加热覆盖外部的外围的绝缘涂层而形成 直角导体,在外周方向具有最厚部分和最薄部分。 直角导体的角部的曲率半径为0.6mm以下,长边方向的相对于短边方向的Lin /宽度方向的长宽比L / L的宽度方向为2.0以下。 将最薄部分的最厚部分的膜厚度作为绝缘膜的外周方向,将最薄部分的膜厚设为d,比率d / dis为1.3以下。
    • 5. 发明专利
    • Discharge charge amount measuring method and discharge charge amount measuring apparatus
    • 放电收费标准测量方法和放电费用金额测量装置
    • JP2014115237A
    • 2014-06-26
    • JP2012270994
    • 2012-12-12
    • Hitachi Metals Ltd日立金属株式会社
    • SUMI YOSUKECHIWATA NAOFUMIKIKUCHI HIDEYUKI
    • G01R31/12
    • G01R31/14G01R31/12G01R31/1227G01R31/1263G01R31/1272
    • PROBLEM TO BE SOLVED: To provide a discharge charge amount measuring method and a discharge charge amount measuring apparatus, which are capable of evaluating the life of an electric wires more accurately.SOLUTION: The discharge charge amount measuring method includes: a partial discharge generation step of applying to a sample a voltage higher than a partial discharge start voltage of the sample from a voltage application device connected to the sample, and thereby generating a partial discharge on the sample; a voltage recording step of consecutively measuring and recording a terminal voltage of a capacitor series-connected between the sample and the ground by alternately operating at least two data loggers connected to both terminals of the capacitor for each predetermined time until the sample falls at least into insulation breakdown; a discharge charge amount calculation step of multiplying a difference between the terminal voltages of the capacitor recorded in the voltage recording step by electrostatic capacitance of the capacitor to calculate a discharge charge amount that is discharged from the sample and remains in the capacitor; and an accumulated discharge charge amount calculation step of accumulating the discharge charge amount at least until the sample falls into insulation breakdown to calculate an accumulated discharge charge amount.
    • 要解决的问题:提供一种能够更精确地评​​估电线寿命的放电电荷量测量方法和放电电荷量测量装置。解决方案:放电电荷量测量方法包括:局部放电产生步骤 从连接到样品的电压施加装置向样品施加高于样品的局部放电开始电压的电压,从而在样品上产生局部放电; 电压记录步骤,通过交替地操作连接到电容器两端的至少两个数据记录器,连续地测量和记录串联连接在样品和地之间的电容器的端电压,直到样品至少进入 绝缘击穿; 放电电荷量计算步骤,将记录在电压记录步骤中的电容器的端电压之间的差乘以电容器的静电电容,以计算从样品放电并保留在电容器中的放电电荷量; 以及累积放电电荷量计算步骤,至少在样品进入绝缘击穿之前累积放电电荷量,以计算累积的放电电荷量。
    • 7. 发明专利
    • Insulated wire and coil using the same
    • 使用绝缘线和线圈
    • JP2014049377A
    • 2014-03-17
    • JP2012193046
    • 2012-09-03
    • Hitachi Metals Ltd日立金属株式会社
    • USHIWATA TAKAMIHONDA YUKINABESHIMA SHUTAKIKUCHI HIDEYUKI
    • H01B7/02C08G73/10C09D179/08H01B3/30H01F5/06
    • H01B3/306Y10T428/2969
    • PROBLEM TO BE SOLVED: To provide an insulated wire and a coil using the same which have excellent partial discharge resistance and excellent workability at high temperatures.SOLUTION: An insulated wire consists of a conductor and a polyimide which has a repeating unit represented by a formula (1) given and a repeating unit represented by a formula (2) given. A first acid component in the repeating unit represented by the formula (1) and a second acid component in the repeating unit represented by the formula (2) are, when expressed in mole ratio (first acid component:second acid component), composed in a range of mole ratio of 85:15 to 40:60, R, which is a residue of the diamine component in the formula (1) and the formula (2), consists of a residue of 4,4'-diamino diphenyl ether and a residue of diamine selected from a group of diamine represented by formulae (3) to (8) given, and the constitution is adjusted so that a storage elastic modulus of the polyimide at 325°C is 50 MPa or more.
    • 要解决的问题:提供一种绝缘线和使用该绝缘线的线圈,其具有优异的耐放电性和在高温下的优异的可加工性。解决方案:绝缘线由导体和聚酰亚胺组成,该导体和聚酰亚胺具有由式 (1)和由式(2)表示的重复单元。 由式(1)表示的重复单元中的第一种酸组分和由式(2)表示的重复单元中的第二种酸组分以摩尔比(第一酸组分:第二酸组分)表示时,以 摩尔比为85:15〜40:60的范围,作为式(1)和式(2)中的二胺成分的残基的R,由4,4'-二氨基二苯基醚 和选自由式(3)〜(8)表示的一组二胺的二胺的残基,并调整其结构,使得聚酰亚胺在325℃下的储能弹性模量为50MPa以上。
    • 9. 发明专利
    • Device and method for inspecting insulation characteristic, and method for manufacturing insulated electric wire
    • 用于检查绝缘特性的装置和方法以及制造绝缘电线的方法
    • JP2014182053A
    • 2014-09-29
    • JP2013057684
    • 2013-03-21
    • Hitachi Metals Ltd日立金属株式会社
    • XIE PENGKIKUCHI HIDEYUKIHINO DAISUKE
    • G01R31/12H01B13/00H01B13/16
    • G01R31/1272G01R31/022
    • PROBLEM TO BE SOLVED: To provide an insulation characteristic inspection device and an insulation characteristic inspection method, capable of accurately inspecting insulation characteristics over the entire length of an insulated electric wire, and to provide a method for manufacturing the insulated electric wire.SOLUTION: An insulation characteristic inspection device includes: a guarantee voltage application unit for applying a guarantee voltage to a traveling insulated electric wire; a grounding unit that is disposed at the downstream side of the guarantee voltage application unit and removes electrical charge taken in the traveling insulated electric wire by grounding the traveling insulated electric wire; and an inspection voltage application unit that is disposed at the downstream side of the grounding unit, applies an inspection voltage lower than the guarantee voltage to the traveling insulated electric wire and detects a leakage current value.
    • 要解决的问题:提供一种绝缘特性检查装置和绝缘特性检查方法,能够精确地检查绝缘电线的整个长度上的绝缘特性,并提供一种绝缘电线的制造方法。解决方案: 绝缘特性检查装置包括:向行驶绝缘电线施加保证电压的保证电压施加单元; 布置在所述保护电压施加单元的下游侧的接地单元,通过使所述行驶绝缘电线接地而去除所述行驶绝缘电线中的电荷; 以及检查电压施加单元,其设置在所述接地单元的下游侧,对所述行驶用绝缘电线施加低于所述保证电压的检查电压,并检测泄漏电流值。