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1. 发明专利

JPH07222334A STRUCTURE FOR FIXING COATED WIRE TO INSULATOR 失效
公开(公告)号：JPH07222334A
公开(公告)日：1995-08-18
申请号：JP3099494
申请日：1994-02-01
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , IRIE TAKASHI , NODA YOSHINOBU
IPC分类号： H01B17/20 , H02G7/00
摘要： PURPOSE:To provide a structure for fixing a coated wire to an insulator while protecting the insulation coating and enhancing the dielectric strength of line. CONSTITUTION:A coated wire 2 is fixed to an insulator 1 using a conductive bind wire 3 hooked to the neck part 1c of the insulator 1. The bind wire is fixed, at the end thereof, with a wire clip 4. The conductor 2a of the coated wire 2 is conducted with the bind wire 3 through the wire clip 4 thus bringing the bind wire 3 to same potential as the coated wire. Consequently, the current does not leak from the coated wire 2 but leaks from the linear contact part 3e hooked to the neck part 1c.

2. 发明专利

JPH0737472A VACUUM VALVE 失效
公开(公告)号：JPH0737472A
公开(公告)日：1995-02-07
申请号：JP20271793
申请日：1993-07-22
申请人： CHUBU ELECTRIC POWER , NGK INSULATORS LTD
发明人： MURAKI SHIGEHARU , SATOU AKIYOSHI , KATO KAZUAKI , IRIE TAKASHI , KOSAKA SETSUO
IPC分类号： H01H33/66
摘要： PURPOSE:To maintain external insulation, and to strengthen the longitudinal magnetic field between both electrodes so as to improve circuit breaking performance. CONSTITUTION:Storage parts 5a, 9a are formed into recesses on the front end parts of a moving electrode 4 and a fixed electrode 8. A metal spacer 11 consisting of ferromagnetic substance and a permanent magnet 10 are laminated on and sealed into the storage parts 5a, 9a. A cylindrical barrier 14 consisting of ferromagnetic substance for surrounding between the both electrodes is provided on the inner surface of an insulated container. A magnetic circuit R of small magnetic resistance passing from one permanent magnet 10 to a metal spacer, the barrier 14, the other metal spacer 11, and the other permanent magnet 10, is thus formed. The strength of the longitudinal magnetic field between the both electrode 4 and 8 is improved, and the generated arc is dispersed equally, to improve circuit breaking performance.

3. 发明专利

JPH06223952A SEMICONDUCTOR DEVICE FOR ELECTRIC POWER 失效
公开(公告)号：JPH06223952A
公开(公告)日：1994-08-12
申请号：JP1174393
申请日：1993-01-27
申请人： NGK INSULATORS LTD
发明人： OSHIMA TOKUO , KATO KAZUAKI
IPC分类号： H01T2/00 , H01L25/065 , H01L25/07 , H01L25/10 , H01L25/11 , H01L25/18
摘要： PURPOSE:To provide a semiconductor device for electric power capable of surely preventing the movement or rotation of an internal element in a package without impairing the conductivity between a pin and the internal element. CONSTITUTION:A multi-stage lamination type semiconductor device is laminated with an internal element into many stages, and it is stored in a package 1. A pin 10 penetrating the package 1 and an auxiliary pin 12 for preventing the release of the pin 10 are both inserted into a pin hole 9 formed on the side face of the internal element, and the release of the pin 10 is prevented by a wedge effect.

4. 发明专利

JPH05325742A SUPPORT DEVICE OF VACUUM VALVE 失效
公开(公告)号：JPH05325742A
公开(公告)日：1993-12-10
申请号：JP10886391
申请日：1991-04-12
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , NAGASAKA HIROMI , HATTORI TAKASHI
IPC分类号： H01H33/66
摘要： PURPOSE:To miniaturize an insulator for supporting a vacuum valve while preventing the breakage of the insulator by the impact at the time of closing the vacuum valve. CONSTITUTION:A support device 55 is formed by mutually facing two U-shaped sectional spring plates 55b1, 55b2 in reversed directions and mutually superposing their plate parts. A spring member 55b for supporting the fixed lead 52a of a vacuum valve 52 and a conductor 51 in opposition to each other with a determined distance, and a plurality of band copper thin plates 55c1 are superposed and formed into a ring. A stainless plate 55c2 is wound once in two mutually opposed positions to electrically connect the fixed lead 52a to the conductor 51. The impact at the time of closing the vacuum valve forms the force for compressing the support device 55, but it is immediately absorbed by the spring member 55b in the support device 55.

5. 发明专利

JPH0570794B2 失效
公开(公告)号：JPH0570794B2
公开(公告)日：1993-10-05
申请号：JP6957387
申请日：1987-03-23
申请人： CHUBU ELECTRIC POWER , NGK INSULATORS LTD , ENERGY SUPPORT CORP
发明人： NAKAMURA AKIHIKO , FURUKAWA YOSHINARI , KATO KAZUAKI , TAKAOKA NAOTOSHI , AIDA MITSUAKI , TANAHASHI YASUHIRO
IPC分类号： G01R31/02 , G01R19/00 , G01R29/16 , G01R31/08 , H02H3/02

6. 发明专利

JPH05235220A 失效
公开(公告)号：JPH05235220A
公开(公告)日：1993-09-10
申请号：JP3547492
申请日：1992-02-24
申请人： NGK INSULATORS LTD , NICHIGAI CERAMICS KK
发明人： ISHIBASHI CHIHIRO , MATSUOKA SUSUMU , KATO KAZUAKI , KONDO TSUTOMU , OGURA TAKEHISA
IPC分类号： H01L23/40
摘要： PURPOSE:To provide a multi-step laminated layer semiconductor device in which the rotation of internal elements inside a package is prevented. CONSTITUTION:An engaging part 11 for stopping rotating is formed in an outer peripheral part of internal element like an electrode part 8 of a multi-step laminated semiconductor device, and the part 11 is engaged with an engaging part 12 for stopping rotating which is provided in an inner peripheral part of a package 1. Furthermore, a pin 13 for stopping rotating can be provided between the electrode part 8 and a heat buffer part 7, and a pin projects in the outer periphery of the electrode part 8 and penetrates into the package 1 to stop rotation of the elements.

7. 发明专利

JPH0556558A FAILURE PROCESSING APPARATUS FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH0556558A
公开(公告)日：1993-03-05
申请号：JP23547491
申请日：1991-08-21
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , OKIMOTO AKEMICHI , KUNIEDA TOSHIHITO , NIWA ATSUHIKO
IPC分类号： H02H7/26
摘要： PURPOSE:To isolate the location where a failure occurs from the others quickly following the operation of a breaker and to avoid any complicated recovery operations for the momentary failures. CONSTITUTION:An occurrence of a failure is noticed to a command controlling unit 60 on the basis of the detection results of detection units 32b1 and 32b2 arranged in a location where a failure occurs. An operating circuit notifies a substation of the open and contact conditions of the respective switchgears in the location to be isolated. On the other hand, a control relay 23b detects the occurrence of the failure on the basis of the detection results of a zero phase current transformer 21b and a ground transformer 22b to break off a breaker 20b. If the failure still exists when the breaker 20b is connected after a given period of time, the breaker 10b is again cut off while an actuating circuit causes the substations 40b1 and 40b2 to open and contact the switchgears 31b1 and 31b2 to keep them in the previously notified conditions. If the failure does not exist, a counter does not count up any longer, and no open and contact commands are outputted to the switchgears.

8. 发明专利

JPH04289769A THYRISTOR SWITCH 失效
公开(公告)号：JPH04289769A
公开(公告)日：1992-10-14
申请号：JP7863391
申请日：1991-03-18
申请人： CHUO SEISAKUSHO , NGK INSULATORS LTD
发明人： ISHIBASHI CHIHIRO , MATSUOKA SUSUMU , KATO KAZUAKI , KITAGAWA MASATO , YONENAGA YUJI
IPC分类号： H02M1/08
摘要： PURPOSE:To provide a thyristor unit wherein a firing capacitor can be charged even if there is no potential difference across a thyristor arm. CONSTITUTION:A thyristor arm 1 comprising a plurality of series connected main thyristors for feeding firing energy from a main circuit is provided for each phase. Firing circuit 5 for each main thyristor 1 is provided with a bilateral charging circuit 4 and an inter-phase capacitor 8 is connected to the way of the plurality of thyristors for each phase. Consequently, a potential difference is produced between the opposite ends of the thyristor arm 1 and the way thereof by means of the inter-phase capacitor 8 even if there is no potential difference across the thyristor arm 1 and thereby the firing circuit 5 can be charged. Furthermore, firing lag due to charging lag can be prevented through bilateral charging.

9. 发明专利

JPH04289722A PROTECTIVE DEVICE FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH04289722A
公开(公告)日：1992-10-14
申请号：JP7862991
申请日：1991-03-18
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , OKIMOTO AKEMICHI , NAKAMURA TOSHIHIKO
IPC分类号： H02H7/22 , H02H3/08 , H02H3/10 , H02H9/04
摘要： PURPOSE:To provide a protective device which prevents the fushion of a distrubution line by detecting the shortcircuit fault by a thunderbolt and forcedly shorting the distribution line. CONSTITUTION:This is provided with a thyristor type high-speed switch 5 which operates at high speed to forcedly short the distribution line when a shortcircuit fault current or a ground fault current flows through the distribution line 3 on the secondary side of the breaker 2 of a substation. This thyristor type high-speed switch 5, when the current of the distribution line 3 gets over the specified value, is started, neglecting the operation property of the OCR of breaker 4 of a consumer, to protect the system. Moreover, this device has an influence upon the other consumer, so it shall be used only at the thunderbolt.

10. 发明专利

JPH04289721A PROTECTIVE DEVICE FOR DISTRIBUTION LINE 失效
公开(公告)号：JPH04289721A
公开(公告)日：1992-10-14
申请号：JP7862891
申请日：1991-03-18
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , OKIMOTO AKEMICHI , NAKAMURA TOSHIHIKO
IPC分类号： H02H7/22 , H02H9/02 , H03K17/08
摘要： PURPOSE:To protect a distribution line from the wire breaking by arc when an fault current is detected, without using a thyristor of large capacity. CONSTITUTION:A thyristor device 3 for compulsorily grounding a distribution line 2 is provided in advance in the position separate from a distribution substation 1, and when an accident current is detected, the thyristor device 3 is operated. Hereby, the system voltage drops, and the wire breaking by arc can be prevented. Moreover, because of the impedance of the distribution line 2, the current flowing in the thyristor device 3 can be made small, and the capacity of the thyristor can be miniaturized.

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