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    • 4. 发明专利
    • Direct current high-voltage grounding relay and circuit for preventing malfunction of relay
    • 用于防止继电器故障的直流电流高压接地继电器和电路
    • JP2010042784A
    • 2010-02-25
    • JP2008209822
    • 2008-08-18
    • Tsuda Denki Keiki KkWest Japan Railway Co津田電気計器株式会社西日本旅客鉄道株式会社
    • KAWAHARA TAKAHARUFUJISAWA KEIJUTOGIISHI DAISUKEMAEDA HIROSHINISHIKAWA TOSHIAKINAGAMORI MASAKI
    • B60M3/00H02H3/16
    • PROBLEM TO BE SOLVED: To provide a direct current high-voltage grounding relay without having an adverse influence on travel of a train, preventing the occurrence of malfunction due to a disturbance such as a lightening strike, and to provide a circuit for preventing the malfunction of the relay. SOLUTION: This invention relates to the direct current high-voltage grounding relay 1 with a potential difference detecting section 10 operated by the potential difference between a ground mat 7 and a return line 4, arranged between the ground mat 7 and the return line 4 of a direct current substation 2 for an electric railroad. It is provided with an electric discharge circuit 15 discharging electric charge charged between the ground mat and the return line with stray capacitance C due to application of an impulse voltage so that the potential difference becomes below the operating voltage within the operating time of the potential difference detecting section. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种直流高压接地继电器,而不会对列车的行驶产生不利影响,防止由于诸如减轻雷击的干扰引起的故障的发生,并且提供用于 防止继电器故障。 解决方案:本发明涉及具有电位差检测部分10的直流高压接地继电器1,其由接地垫7和返回线路4之间的电位差操作,布置在接地垫7和返回线 用于电力铁路的直流变电站2的线路4。 设置有放电电路15,其由于施加脉冲电压而使接地垫和返回线之间的充电电荷与杂散电容C放电,使得电位差在电位差的运行时间内变得低于工作电压 检测部分。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Device and method for preventing wear of trolley cable
    • 用于防止拉杆电缆磨损的装置和方法
    • JP2009083581A
    • 2009-04-23
    • JP2007253531
    • 2007-09-28
    • Tsuda Denki Keiki KkWest Japan Railway Co津田電気計器株式会社西日本旅客鉄道株式会社
    • NOBUHARA TAKAYOSHIMORITA KENKOYASU AKIRAYAMANOI TAKASHIMORINO SHOHEI
    • B60M1/28B60M1/12
    • PROBLEM TO BE SOLVED: To provide a device and a method for preventing wear of a trolley cable capable of reliably preventing wear of the trolley cable by the necessary minimum operation, and minimizing damages even when an accident such as ground fault occurs.
      SOLUTION: The device comprises first and second current measuring instruments 4A, 4B which are fitted to overhead trolley contact wires 2A, 2B located at both ends of an air section 3 for changing the first overhead trolley contact wire 2A and the second overhead trolley contact wire 2B to measure the currents Ia, Ib running in the air section 3; a making switch 6 which is connected to the overhead trolley contact wires 2A, 2B to change the open state and the short-circuit state between the overhead trolley contact wires 2A, 2B; and a control unit 7 which inputs the measurement values of the currents Ia, Ib and the potential difference V, and changes the making switch 6 in the short-circuit state when satisfying the wear caring conditions D1-D9 in which the wear of trolley cables 2At, 2Bt is cared in the air section 3.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够防止滑车电缆的磨损的装置和方法,其能够通过必要的最小操作可靠地防止滑车电缆的磨损,并且即使在诸如接地故障的事故发生时也最小化损坏。 解决方案:该装置包括第一和第二电流测量仪器4A,4B,其安装在位于空气部分3两端的架空电车线路2A,2B上,用于改变第一架空架线电线2A和第二架空线 台车接触线2B以测量在空气部分3中运行的电流Ia,Ib; 连接到架空台车接触线2A,2B以改变开启状态和架空电车线路2A,2B之间的短路状态的制动开关6; 以及控制单元7,其输入电流Ia,Ib和电位差V的测量值,并且在满足摩托车电缆的磨损的磨损条件D1-D9时将制动开关6改变为短路状态 2At,2Bt在空气部分3处理。版权所有(C)2009,JPO&INPIT