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11. 发明专利

JPH02312132A LOAD PROTECTOR 失效
公开(公告)号：JPH02312132A
公开(公告)日：1990-12-27
申请号：JP13380189
申请日：1989-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO , MATSUDA JUNICHI
IPC分类号： H01H71/24 , H01H77/06 , H01H79/00
摘要： PURPOSE:To effectively protect a load having a low over-current resistance and simplify a release the load by providing a plurality of electromagnetic devices respectively disposed in a plurality of cable ways and actuated when each current flowing the cable ways exceeds a predetermined value, and a short-circuit means for shorting the cable ways in association with the operation of the electromagnetic devices. CONSTITUTION:There are provided a plurality of electromagnetic devices 1-3 respectively disposed in a plurality of cable ways 5-7 and actuated when each current flowing the cable ways 5-7 exceeds a predetermined value and a short- circuit means 4 for shorting the cable ways 5-7 in association with the operation of the electromagnetic devices 1-3. Accordingly, when the current above the predetermined value flows through arbitrary one of the cable ways 5-7, the electromagnetic devices 1-3 of the cable ways 5-7 is actuated and the short- circuit means 4 shorts the cable ways 5-7 in association with the operation of the electromagnetic devices 1-3, to protect a load. Therefore, the load having a low over-current resistance can be effectively protected with a simple constitution, and moreover, the electromagnetic devices 1-3 can be released easily.

12. 发明专利

JPH0249322A CIRCUIT BREAKER 失效
公开(公告)号：JPH0249322A
公开(公告)日：1990-02-19
申请号：JP32653688
申请日：1988-12-23
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUDA JUNICHI , AOYAMA YOICHI
IPC分类号： H01H9/36 , H01H9/46 , H01H73/18 , H01H79/00
摘要： PURPOSE:To shorten the time in which an abnormal current flows in a load incl. semiconductor element through an arc by furnishing a connector to connect polar arc runners of circuit breakers having a plurality of poles with each other. CONSTITUTION:Fixed contacts 3, 4 are connected with load terminals 2a, 2b, and movable contacts 5, 6 of movable contact pieces 7, 8 to be connected with power terminals 12, 13 are put in contact with these fixed contacts 3, 4. An arc extinguishing device 17 to extinguish arc generated between the fixed contacts 3, 4 and movable contacts 5, 6 is installed between an arc horn 14 connected on the power terminals 12, 13 side and an arc runner 16 having an arc hop-over part 15 arranged near the fixed contacts 3, 4. The arc runners 16 of the poles are connected by respective connectors 18. The connectors 18 are formed from a conductive plate and coupled together by a screw 22 so as to shortcircuit the arc runners 16 between. This can shorten the time in which an abnormal current flows through the load 1 incl. semiconductor element through an arc.

13. 发明专利

JPH01298622A CIRCUIT BREAKER 失效
公开(公告)号：JPH01298622A
公开(公告)日：1989-12-01
申请号：JP12876388
申请日：1988-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUDA JUNICHI
IPC分类号： H01H71/14 , H01H9/46 , H01H71/12 , H01H73/18
摘要： PURPOSE:To shorten a time required for commutation so as to attempt protection of elements by connecting an overcurrent detecting element and a shortcircuit current detecting element to the fixed contact of a circuit breaker and to a movable contact respectively and installing the commutation part of an arc running plate in the vicinity of the fixed contact. CONSTITUTION:When shortcircuit current or over current flows with contacts in the state of contact, a movable contactor 3 starts its separation and simultaneously an arc A is generated a fixed contact 1 and a movable contact 2. The arc A is prolonged by receiving driving power from an arc-extinguisher 6 and commutated in a commutation part 7 close to the contact 1. When the arc is commutated, an over current detecting unit 4 comes in its shortcircuited state. Further, when the movable contactor 3 is displaced to approach an arc running plate 8, arc A of the movable contact 2 is also commutated to the running plate 8 and a shortcircuit current detecting element 5 also comes in a shortcircuited state. Thus, and arc is commutated in a short time to enhance the protection of element.

14. 发明专利

JPH01206522A ARC-EXTINGUISHING DEVICE 失效
公开(公告)号：JPH01206522A
公开(公告)日：1989-08-18
申请号：JP3143188
申请日：1988-02-12
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： OKADA TAKEHIKO , AOYAMA YOICHI , MATSUDA JUNICHI , OMURO MASARU , HIRAO AKIHIKO , SAWADA TOMOYUKI
IPC分类号： H01H9/44 , H01H73/18
摘要： PURPOSE:To improve current limiting property with a small size by providing a magnetic substance formed in U-shape and coating the inner surface of the magnetic substance with an insulator generating a pyrolytic gas by the heat of an arc. CONSTITUTION:A magnetic substance 9 has cut-out parts 15 formed on side plates 7, which cut-out parts 15 are engaged with a driving coil 6. The magnetic flux generated around the arc 5 nearing an arc-extinguishing part 11 is collected in the magnetic substance 9, causing an interlinkage of the arc 5 with a magnetic flux passing between the side plates 7 of the magnetic substance 9, so that the arc 5 is magnetically attracted to the back plate 8 side and thus extended, whereby the arc voltage is increased. The arc 5 is pressed to an insulator 10 in the inside of the back plate 8, to which the heat of the arc 5 is transferred, and thus cooled. Further, by the use of melamine resins as the insulator 10, the heat conductivity of hydrogen gas which is a pyrolytic gas generated by heating with the arc increased, so that the arc 5 is rapidly cooled.

15. 发明专利

JPS63294635A ARC-SUPPRESSING DEVICE 失效
公开(公告)号：JPS63294635A
公开(公告)日：1988-12-01
申请号：JP13025287
申请日：1987-05-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUDA JUNICHI
IPC分类号： H01H73/18
摘要： PURPOSE:To promote the extension of an arc and prevent the insulation around a contact part from deteriorating by cooling a part of arc gas which returns through a reflux passage when it passes through the reflux space of a heat absorber while absorbing carbon and molton metal powder with the heat absorber. CONSTITUTION:When an arc is generated between a movable contact 13 and fix contact 11, a magnetic flux generated around the arc is concentrated to a magnetic body 8 so as to generate a magnetic flux interlinked to the arc between side plates 5. Thus, the arc is moved to the side of an exhaust hole 2 and extended in order to be suppressed. In this case, the generated arc gas is exhausted to the exhaust hole 2 as shown in the arrow mark while the part of arc gas is refluxed as shown in the narrow mark to the side of a contact part 1 having a negative pressure through a refluxing passage 7 so as to be in negative pressure, thus the extension of the arc being promoted. When, the part of the arc gas is refluxed in the refluxing passage 7, it is cooled at the reflux space 9 of a heat absorber 10 while carbon and molton metal powder are absorbed to the heat absorber 10. Therefore, it is possible to promote the extension of the arc and prevent the insulation around the contact part 1 from deteriorating.

16. 发明专利

JP2003344475A Earth detector 审中-公开
标题翻译：地震探测器
公开(公告)号：JP2003344475A
公开(公告)日：2003-12-03
申请号：JP2002154779
申请日：2002-05-28
申请人： Matsushita Electric Works Ltd , 松下電工株式会社
发明人： MATSUDA JUNICHI
IPC分类号： G01R31/02 , G01R15/18 , G01R31/08 , H01F38/28 , H02H3/16
CPC分类号： Y04S10/522
摘要： PROBLEM TO BE SOLVED: To provide a earth detector for easily detecting a earth spot and having a simple structure and high measurement flexibility. SOLUTION: This earth detector is equipped with annular detection cores 1ab, 1bb, and 1cb mounted on the respective wires of transmission/distribution lines a, b, and c for detecting magnetic flux generated from the respective wires, bobbin coils 1ac, 1bc, and 1cc wound around the cores 1ab, 1bb, and 1cb, respectively, conductor wires 5a, 5b, and 5c electrically connected to the bobbin coils 1ac, 1bc, and 1cc, respectively, an annular merging core 21 for merging magnetic flux generated from the respective wires 5a, 5b, and 5c, a coil 22 for generating an electric current corresponding to the merged magnetic flux, a current detection part 3 for monitoring the electric current from the coil 22 to determine the generation of a earth, and a display part 4 for displaying the generation of a earth as the result of the determination. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种容易检测地球点并具有简单结构和高测量灵活性的地球探测器。解决方案：该地球探测器配备有安装在传输/分配线a，b和c的各个线上的环形检测芯1ab，1bb和1cb，用于检测从各个线，线圈线圈1ac， 1bc和1cc分别缠绕在芯1ab，1bb和1cb周围，分别与线圈线圈1ac，1bc和1cc电连接的导体线5a，5b和5c，用于合并产生的磁通的环形合并芯21 从各导线5a，5b，5c分别产生用于产生与合并磁通相对应的电流的线圈22，用于监测来自线圈22的电流以确定地球的产生的电流检测部3，以及作为确定结果显示地球的产生的显示部分4。版权所有（C）2004，JPO

17. 发明专利

JPH06308165A CURRENT INTEGRATION METER 失效
公开(公告)号：JPH06308165A
公开(公告)日：1994-11-04
申请号：JP9630793
申请日：1993-04-22
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUDA JUNICHI , AOYAMA YOICHI
IPC分类号： G01R11/02 , G01R11/34 , G01R11/38 , G01R22/00
摘要： PURPOSE:To obtain an integration current value of a single-phase three-wire electric circuit only based on an AC current of the circuit by a method wherein the AC currents of a two-wire circuits, which are selected from the single-phase three wire electric circuit by removing the central wire, are added with each other to be inputted to a current-voltage convertor. CONSTITUTION:A voltage of an electric circuit is applied to an electric power source circuit 18 from input terminals via a power transformer 17 to be supplied to each circuit as an operation power source. On the other hand, each of current transformers CTs outputs current signal in proportion with a current of the circuit to be inputted to a current-voltage converter 11 via current input terminals in a relationship of reversed polarity with each other. The current- voltage converter 11 converts the current signals from the current transformer CTs into an AC voltage in the additional condition by means of a signal conversion resistor. From the AC voltage, an effective voltage value is calculated by an effective value calculation circuit 12 to be outputted as a DC voltage by being amplified. Consequently, a pulse signal having a frequency corresponding to the DC voltage is outputted from a voltage-frequency convertor 13.

18. 发明专利

JPH06139905A ELECTRONIC PROTECTIVE RELAY DEVICE 失效
公开(公告)号：JPH06139905A
公开(公告)日：1994-05-20
申请号：JP28793992
申请日：1992-10-26
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIGASHIHAMA HIROTADA , MATSUDA JUNICHI
IPC分类号： H01H73/12 , H02H3/04
摘要： PURPOSE:To transmit wiring information securely to the outside by delaying trip action till transmission of the information to a wiring information transmitting part is completed in the case of performing the trip action. CONSTITUTION:A wiring information monitoring part 5 has a function of delaying output of a trip signal till transmission of wiring information to a wiring way information transmitting part 6 is completed when a condition of outputting the trip signal to a trip circuit 4 occurs, that is a so-called delay timer function. This means that the part 5 starts when power is supplied or when a reset circuit is actuated to perform an initializing process, and signals from current transformers 12, 12, 12 and a zero-phase current transformer 13 are taken to compute a current value. In this case, an overcurrent value, a leak current value, etc., are preliminarily set, and if the trip signal is to be outputted or not (if trip action is to be performed or not) is determined by comparison with these. The trip action is delayed till transmission of a result to the part 6 is completed, thereby trip information can be transmitted to the external securely.

19. 发明专利

JPH0624086B2 失效
公开(公告)号：JPH0624086B2
公开(公告)日：1994-03-30
申请号：JP3143188
申请日：1988-02-12
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： OKADA TAKEHIKO , AOYAMA YOICHI , MATSUDA JUNICHI , OOMURO MASARU , HIRAO AKIHIKO , SAWADA TOMOYUKI
IPC分类号： H01H9/44 , H01H73/18

20. 发明专利

JPH0666848A INTEGRATOR 失效
公开(公告)号：JPH0666848A
公开(公告)日：1994-03-11
申请号：JP21918692
申请日：1992-08-18
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIGASHIHAMA HIROTADA , MATSUDA JUNICHI , AOYAMA YOICHI
IPC分类号： G01R11/00 , G01R22/00
摘要： PURPOSE:To provide an integrator capable of easily managing electric energy used without requiring the consideration of polarity and phase of input as in the past. CONSTITUTION:By using, as input, an AC current 1a outputted from a CT1 for detecting a current carried to a cable run 32, a pulse 4a having a frequency proportional to the current carried to the cable run 32 is formed by the signal processing by a current-voltage converter 2, an effective value arithmetic circuit 3 and a V/F converter 4. This pulse 4a is divided in a determined dividing ratio by a frequency demultiplier 5, whereby pulses 5a, 5b corresponding to a determined increase of current integrated value in the cable run 32 are provided. The pulse number is counted by a display counter 6, whereby, the current integrated value is determined and displayed as an electric energy used.

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