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1. 发明专利

JPS59170777A Measuring method of sheath loss of electric power cable 失效
标题翻译：电力电缆损伤测量方法
公开(公告)号：JPS59170777A
公开(公告)日：1984-09-27
申请号：JP4372183
申请日：1983-03-16
申请人： Hitachi Cable Ltd
发明人： SUGIYAMA KOUICHI , TSUTSUI TERUAKI , SHIGA SHIYOUICHI , YAMAZAKI KAORU
IPC分类号： G01R31/02 , G01R27/02
摘要： PURPOSE: To take a high-precision measurement of sheath loss by constituting a three-phase closed circuit by using an auxiliary line for measuring the sheath loss of each phases of asymmetrically arranged cables arranged in parallel, and conducting the circuit by a ring transformer.
CONSTITUTION: Two cables 4 and the auxiliary line 10 arranged at distance from them are laid in parallel to constitute the three-phase closed circuit by using a lead wire 11 for feeding, and this circuit is fed with a three-phase current by the ring transformer 7. Then, a voltage lead wire 6 is wound around the cables 4 and auxiliary wire 10, and one-side terminals of them are short-circuited while the other-side terminals are connected to voltage terminals of a power meter 9. Then, the circuit is powered on by the ring transformer 7. Consequently, the loss P
1 in the feeding circuit is measured by the power meter 9. Then, a sample 5 is installed at a desired position near the cables 4 in said state, and the loss of the sample 5 is expressed P=P
2 -P
1 , where P
2 is the loss found by the power meter 9.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过使用并联布置的不对称布置的电缆各相的护套损耗的辅助线构成三相闭路，并通过环形变压器导通电路，对鞘损耗进行高精度测量。构成：通过使用用于进给的引线11将两根电缆4和与之隔开的辅助线路10并联放置以构成三相闭路电路，该电路通过环路馈送三相电流变压器7.然后，将电压引线6卷绕在电缆4和辅助线10上，并且它们的一侧端子短路，而另一侧端子连接到功率计9的电压端子。然后电路通过环形变压器7通电。因此，馈电电路中的损耗P1由功率计9测量。然后，样品5安装在所述状态下靠近电缆4的期望位置，并且样品5的损失表示为P = P2-P1，其中P2是功率计9发现的损耗。

2. 发明专利

JPS59116069A Measuring method of iron loss 失效
标题翻译：铁损测量方法
公开(公告)号：JPS59116069A
公开(公告)日：1984-07-04
申请号：JP23409382
申请日：1982-12-23
申请人： Hitachi Cable Ltd
发明人： SHIGA SHIYOUICHI , SUGIYAMA KOUICHI , TSUTSUI TERUAKI , YAMAZAKI KAORU
IPC分类号： G01R33/02 , G01N27/72 , G01R33/12
CPC分类号： G01R33/123
摘要： PURPOSE:To measure the iron loss of a telephone-tunnel by providing search coils in juxtaposed main and auxiliary current conducting circuits, and disposing a simulated sample of the telephone-tunnel near the search coils in the state of making induced voltage zero. CONSTITUTION:Current I is supplied, via a transformer 5, to juxtaposed conductors 1c, 1d forming respectively main and auxiliary current conducting circuits 1a, 1b. A variable resistor 7a and variable resistor 7b connected to a mutual rectance 6 are adjusted while a power meter 8 is in observation so that the voltage induced by search coils 3a, 3b for detecting the magnetic flux formed by a voltage lead wire 2 wound on the conductors 1c, 1d is made zero. Then the resistance components and reactance components of the circuits 1a, 1b, the voltage dividing ratio of the resistors 7a, 7b, the inductance of the reactance 6, etc. satisfy required conditions and if a simulated sample 4 of a telephone-tunnel is disposed near the coil 3a, the input voltage to the power meter 8 is the voltage value corresponding to the loss by the sample 4 alone and the iron loss of the telephone-tunnel is measured with high accuracy.
摘要翻译：目的：通过在主和辅助导通电路中并列提供搜索线圈来测量电话隧道的铁损，并在感应电压为零的状态下将电话隧道的模拟样本放置在搜索线圈附近。构成：电流I通过变压器5供给到分别形成主电流导体1a和电流导体1a的导体1c，1d。在功率计8进行观察的同时，调整与可变电阻器7a和可变电阻器7b连接的可变电阻器7a，使得由检测线圈3a，3b感应的电压，用于检测由缠绕在其上的电压引线2形成的磁通量导体1c，1d为零。然后，电路1a，1b的电阻分量和电抗分量，电阻7a，7b的分压比，电抗6的电感等满足所需条件，并且如果设置电话隧道的模拟样本4 在线圈3a附近，对功率计8的输入电压是与单独的样本4的损耗对应的电压值，并以高精度测量电话隧道的铁损。

3. 发明专利

JPS5739362A Short-circuit testing circuit of power cable 失效
标题翻译：短路电力电缆测试电路
公开(公告)号：JPS5739362A
公开(公告)日：1982-03-04
申请号：JP11452980
申请日：1980-08-20
申请人： Hitachi Cable Ltd
发明人： SUGIYAMA KOUICHI , ANDOU YORIO , SHIGA SHIYOUICHI , KANAMARU KIMIHARU , SATOU HIDEO , MINAFUJI JIYUNICHI
IPC分类号： G01R31/12 , G01R31/02 , H01B13/00
CPC分类号： G01R31/025
摘要： PURPOSE:To record a short-circuit start time together with information of ignition and explosion of a power cable by use of a high-speed camera or a video camera, by using a stroboscopic lamp which emits light, synchronizing with a short-circuit current. CONSTITUTION:A video camera 7 is set at a position where a sample 1 can be observed well, and a video body 8 is operated before short-circuit is started. Subsequently, when a hort-circuit current is made to flow to the sample 1, the current flows to a secondary circuit of a current transformer 4, too, a stroboscopic lamp 6 emits light, and it is caught by the video camera 7. After that, ignition or explosion occurs in the sample, but such a state is picture-recorded one after another through the video camera 7. Accordingly, after a short-circuit test has been executed, when a video film is changed to a video through television, etc., the short-circuit start time and also the subsequent status change of the sample 1 are grasped in detail.
摘要翻译：目的：使用高速摄像机或摄像机，通过使用发光的频闪灯，与短路电流同步，记录短路开始时间以及电源线的点火和爆炸信息。构成：将摄像机7设定在能够良好地观察样本1的位置，在短路开始之前动作视频体8。随后，当使电流流向样品1时，电流也流过电流互感器4的次级电路，频闪灯6发光，并被摄像机7捕获。之后在样品中发生点火或爆炸，但是这样的状态通过摄像机7一个接一个地被图像记录。因此，在执行了短路测试之后，当通过电视机将视频电影改变为视频等等，详细地了解了样品1的短路开始时间和随后的状态变化。

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