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    • 4. 发明专利
    • Verifying method of small leading current breaking performance of circuit breaker
    • 小电流断路器电流断路性能的验证方法
    • JPS58182569A
    • 1983-10-25
    • JP6696582
    • 1982-04-20
    • Hitachi Ltd
    • OZAWA ATSUSHIISHIKAWA RIKIZOUYOSHIOKA YOSHIO
    • G01R31/327G01R31/333G01R31/32
    • G01R31/3333
    • PURPOSE:To obtain an interelectrode dielectric breakdown voltage of a circuit breaker under operation in opening state at plural points, by applying one shot of impulse voltage with a >=10ms long trailing edge once after the breaker is opened. CONSTITUTION:To obtain a >10ms long trailing edge, at an impulse voltage generating device 10, the values of a neutral point resistance 17 and a trail edge adjusting resistance 19 are made large, and the device 10 is provided with a charging switch 15, and after an capacitor 16 is charged up to a specific voltage, the opening point of the switch 15 is made different. When electrodes start parting at time T1 and a impulse voltage with a >=10ms long trailing edge is applied at time T2, an interelectrode dielectric breakdown occurs at point P1. If a discharging circuit is oscillatory, a discharging current is oscillatory and a current zero point is obtained. Then, a circuit breaker 3 obtains dielectric recovery and the voltage is applied again from the generating device for the impulse voltage with the long trailing edge to apply a voltage shown by point S2 to the breaker, causing a dielectric breakdown shown by point P2. Then, dielectric breakdowns occur similarly as shown by points P3-P6 to obtain plural measurement points by applying one shot of the impulse voltage.
    • 目的:通过在断路器断开一次后施加一次≥10ms长的后沿一次脉冲电压,以获得多点断路器工作中的断路器的电极间绝缘击穿电压。 构成:为了获得> 10ms长的后沿,在脉冲电压产生装置10处,使中性点电阻17和轨迹边缘调整电阻19的值变大,并且装置10设置有充电开关15, 并且在电容器16充电到特定电压之后,使开关15的开口点不同。 当电极在时间T1开始分离,并且在时间T2施加具有> = 10ms长后沿的脉冲电压时,在点P1处发生电极间电介质击穿。 如果放电电路振荡,则放电电流振荡并获得电流零点。 然后,断路器3获得电介质恢复,并且从具有长后沿的脉冲电压的发生装置再次施加电压,以将点S2所示的电压施加到断路器,导致点P2所示的介电击穿。 然后,如点P3-P6所示类似地发生电介质击穿,通过施加一脉冲电压来获得多个测量点。
    • 5. 发明专利
    • Three-phase throwing capacitance composite tester for three-phase breaker
    • 三相断路器的三相电容式复合材料试验机
    • JPS5735770A
    • 1982-02-26
    • JP11128780
    • 1980-08-13
    • Toshiba Corp
    • MIYAKE NOBUYUKINAKAMURA EISAKUSAIGOU TOSHINOBUYAMASHITA SHIYOUJI
    • G01R31/327G01R31/333G01R31/32
    • G01R31/3333
    • PURPOSE:To obtain a three-phase throwing capacitance composite tester than enables tests equivalent to direct tests by installing a voltage source transformer that supplies specified three-phase voltage and current and a short-circuit transformer. CONSTITUTION:A current source circuit in which a short-circuit generator 1, a short-circuit transformer 4 and a trigger gap switch 6 are conected in series, a voltage source transformer 8 that supplies high voltage branching from the connecting point of a protective breaker 2 and a current limiting reactor, and a voltage source circuit in which high impedance 9 is connected in series, are connected in parallel to a breaker to be tested, and a detector 7 that detects minute current is installed in the voltage circuit. After generation of pre-arc in the breaker 5, specified current is supplied by the trigger gap switch without delay. Thus, by using the power source separately for voltage and current by time using the trigger gap, testing capacity equivalent to enlargement by several times existing short-circuit testing equipment can be obtained.
    • 目的:为了获得三相投掷电容复合测试仪,可以通过安装提供特定三相电压和电流的电压源变压器和短路变压器来实现相当于直接测试的测试。 构成:将短路发生器1,短路变压器4和触发间隙开关6串联连接的电流源电路,从保护用断路器的连接点供给高压分支的电压源变压器8 2和限流电抗器以及其中高阻抗9串联连接的电压源电路并联连接到要测试的断路器,并且在电压电路中安装检测微小电流的检测器7。 在断路器5中产生预电弧之后,指定电流由触发间隙开关无延迟地提供。 因此,通过使用触发间隙分别对电压和电流进行电压和电流的单独使用,可以获得等效于现有短路测试设备的放大倍数的测试能力。
    • 8. 发明专利
    • Anti-ground insulation inspection testing method in case when charging current of disconnecting switch is cut off
    • 当断开断路电流切断时,反接地绝缘检查方法
    • JPS5934170A
    • 1984-02-24
    • JP14341782
    • 1982-08-20
    • Hitachi Ltd
    • YAMAGIWA TOKIOISHIKAWA TOSHIOOZAWA ATSUSHIENDOU KAORUHOSOKAWA MASAO
    • G01R3/00G01R31/12G01R31/327G01R31/333H01H31/00H01H33/26
    • H01H33/26G01R31/3333
    • PURPOSE: To execute a test by applying the voltage from only one side of a disconnecting switch, without using a DC voltage generator, by charging a gas insulated bus by interpole discharge, and making DC voltage remain behind.
      CONSTITUTION: A gas bus is connected as a load to one side of a disconnecting switch 1 contained in a ground tank. A bushing 10 is fitted to the other side of the disconnecting switch 1, and it is connected to an electric power source 20 by a lead wire 26. In this state, when voltage of the first time is supplied from the electric power source 20, a gas bus 3 is charged by interpole discharge, and DC voltage remains behind. Thereafter, voltage of the second time, whose polarity is opposite to the voltage of the first time is applid from the electric power source 20. As a result, electric discharge is generated between electrodes of the disconnecting switch 1, and anti-ground insulation can be inspected.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:通过从断路开关的一侧施加电压,不使用直流电压发生器,通过间歇放电对气体绝缘母线进行充电,并使直流电压保持在后面,进行测试。 构成:气体总线作为负载连接到容纳在接地箱中的断路开关1的一侧。 衬套10安装在断开开关1的另一侧,并且通过引线26连接到电源20.在这种状态下,当从电源20提供第一次的电压时, 气体总线3通过极间放电来充电,并且直流电压保持在后面。 此后,从电源20施加极性与第一次的电压相反的第二次的电压。结果,在断路开关1的电极之间产生放电,并且防地绝缘可以 被检查。