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1. 发明专利

JP2003203547A GAS-BLAST CIRCUIT BREAKER 审中-公开
公开(公告)号：JP2003203547A
公开(公告)日：2003-07-18
申请号：JP2002001948
申请日：2002-01-09
申请人： HITACHI LTD
发明人： IWABUCHI KENJI , TAKAMOTO MANABU , YAMAMOTO NAOYUKI , YAEGASHI MASAHIRO
IPC分类号： H01H33/915 , H01H33/91
摘要： PROBLEM TO BE SOLVED: To provide a gas-blast circuit breaker capable of securing the hot gas straightening action, cooling, and insulating performance in a fixed side conduct upon which hot gas is blown. SOLUTION: This gas-blast circuit breaker injects insulating gas into an arc generated at electric current breaking time by injecting the insulating gas between oppositely arranged movable arc contact and fixed arc contact, an insulating nozzle arranged on the fixed arc contact side in the movable arc contact, a puffer cylinder arranged on the opposite side of the insulating nozzle, a hollow conduct for fixing the fixed arc contactor to the opposite side to the insulating nozzle, an insulating rod connected to the puffer cylinder, and a fixed piston arranged in the puffer cylinder by driving of the insulating rod. The hollow conduct has a cylindrical shape smaller on the downstream side of the insulating gas in a cross section parallel to the axis, and closing the downstream side tip, and has a plurality of opening parts in a cylindrical body part. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003164024A CURRENT TRANSFORMER FIXING APPARATUS 审中-公开
公开(公告)号：JP2003164024A
公开(公告)日：2003-06-06
申请号：JP2001360982
申请日：2001-11-27
申请人： HITACHI LTD
发明人： TSUNODA NOBUYUKI , KOYAMA KOICHI , TAKAMOTO MANABU , SHIMOKAWA MASAHIRO
IPC分类号： H02B13/02 , H01F27/06 , H01F38/30 , H02B13/065 , H02G5/06
摘要： PROBLEM TO BE SOLVED: To reduce a containing space for containing a current transformer. SOLUTION: The current transformer 16 is disposed on an outer circumference of a current transformer attaching pipe 12 disposed around a central conductor 10 through an insulation packing 14. A cylindrical container 18 is disposed on an outer circumference of the current transformer 16. A current transformer attaching plate 20 supports the bottom of the current transformer 16. A fixing bolt 34 is fastened to an air-tight flange 24 coupled to an upper part of the container 18. An upper part of the current transformer 16 is pressed by the fixing bolt 34 through a current transformer pressing plate 36 and an insulation packing 38. The movement of the current transformer 16 in the axial direction is regulated, a rotational shift is prevented, and the space in the axial and radial directions of the container 18 is reduced. COPYRIGHT: (C)2003,JPO

3. 发明专利

JPH11234823A GAS-INSULATED SWITCHGEAR 失效
公开(公告)号：JPH11234823A
公开(公告)日：1999-08-27
申请号：JP2855598
申请日：1998-02-10
申请人： HITACHI LTD
发明人： HATSUTA KAZUYUKI , HACHITSUKA HIROHIKO , TAKAMOTO MANABU
IPC分类号： H02B13/02
摘要： PROBLEM TO BE SOLVED: To obtain a gas-insulated switchgear which realizes miniaturization, reduction in installation area and improvement in installation work, maintenance and inspection services. SOLUTION: This gas insulated switchgear is provided with at least double main buses 100A to 200B, having bus sectionalizing switching device units 7, 8, transmission lines L11 to L32 comprising a plurality of circuits, and transmission line switch device units 3 to 14, each connected between the double main buses connected to the one of the circuits and the one end of the bus sectionalizing switching device units and to the other end of the circuits and the other end of the bus sectionalizing switching device units and then provided with gas-blast circuit breakers 1A to 15C structured vertically. In this case, the transmission lines are arranged in many directions against the double main buses, and gas-blast circuit breakers 1A to 15C are each arranged along the one side part of the double main buses.

4. 发明专利

JPH11215670A GAS-INSULATED BUS-BAR UNIT AND ITS ASSEMBLING METHOD 失效
公开(公告)号：JPH11215670A
公开(公告)日：1999-08-06
申请号：JP31564098
申请日：1998-11-06
申请人： HITACHI LTD
发明人： HATSUTA KAZUYUKI , FUJIWARA FUKUO , HISHINUMA MASAO , HACHITSUKA HIROHIKO , TAKAMOTO MANABU
IPC分类号： H02G5/06
摘要： PROBLEM TO BE SOLVED: To facilitate work to be performed in a bus-bar tank by a worker, and to enable a smooth assembling process by connecting a plate to be connected to the opening to a bus-bar tank with one end of an insulating supporter, and connecting the plate with the opening of the bus-bar tank, from outside the bus-bar tank. SOLUTION: A bus-bar conductor 103 is connected to one end of a mailbox- shaped spacer 106 with screws 107, and the other end of the mailbox-shaped spacer 106 is connected to a plate 109 with screws 111 and the plate 109 is connected and fixed to the bus-bar tank 101 with the screws 110 of a connecting member. The plate 109 causes the bus-bar tank 101 to support and fix the mailbox-shaped spacer 106 and the bus-bar conductor 103 with screws 110, and along with it seals the mailbox-shaped spacer 106 fitting opening of the bus-bar tank 101. Consequently, it becomes possible to enhance the workability of assembling, since a worker doe not need to enter the bus-bar tank 101 for assembling work.

5. 发明专利

JPH10304542A GAS-INSULATED SWITCHGEAR 失效
公开(公告)号：JPH10304542A
公开(公告)日：1998-11-13
申请号：JP10951297
申请日：1997-04-25
申请人： HITACHI LTD
发明人： TANAKA SHIGERU , OSHITA YOICHI , YAMADA SEIICHI , TAKAHASHI KEN , OISHI KAZUYA , OZAWA ATSUSHI , TAKAMOTO MANABU
IPC分类号： H02B13/02 , H02G5/06
摘要： PROBLEM TO BE SOLVED: To provide a gas-insulated switchgear fitted with a surge-suppressing means compact and capable of suppressing surges effectively as well. SOLUTION: In a gas-insulated switchgear, a voltage nonlinear component 14 being in contact with the flange 5 surface of a metal sheath 3 is made of a ceramic which contains 85%-98% of zinc oxide, is in the shape of a disk-like substance having a through-hole in the center part. Electrodes are formed on both surfaces having the through-hole, and glass layers are formed on the external and internal peripheral surfaces of the disk-like substance. Moreover, a metal plate having a through-hole similar to the through-hole is formed integrally and fixed to at least one of the electrodes. Consequently, it becomes possible to make a surge suppressing means compact and insulatable from the voltage with respect to commercial frequencies, and to effectively suppress high-frequency surges.

6. 发明专利

JPH07320611A GAS INSULATED SWITCHING DEVICE 失效
公开(公告)号：JPH07320611A
公开(公告)日：1995-12-08
申请号：JP10808694
申请日：1994-05-23
申请人： HITACHI LTD
发明人： YAMADA HITOSHI , OONO MASATOMO , TAKAMOTO MANABU , KAWAMOTO HIDEO
IPC分类号： H01H33/70 , H01H33/16
摘要： PURPOSE:To prevent energy over an allowable value from being supplied in a resistor by forming a means for delaying the operating time of a resistance contact by means of a mechanical delay part and an electrical delay part. CONSTITUTION:A drive mechanism of a pilot valve 17b for a resistance breaking part and an electrical mechanism for obtaining a desired delay time are arranged in parallel. Although a control mechanism of a resistance breaking part operation mechanism is not operated by drive force of the drive piston of a main breaking part operation mechanism at tripping operation of a breaker when a rotary link 21 is damaged, an electromagnetic coil 23 is magnetized by an electric indication and a hook mechanism of the resistance breaking part operation device is tripped because a mechanical delay action mechanism and a delay action mechanism operated by electric instruction are excessively provided. Thereby, a resistance breaking contact is interrupted. Electric current flows continuously through a resistor and damage to the resistor can be prevented.

7. 发明专利

JPH05219615A GAS INSULATED SWITCHGEAR 失效
公开(公告)号：JPH05219615A
公开(公告)日：1993-08-27
申请号：JP1776492
申请日：1992-02-03
申请人： HITACHI LTD
发明人： TANAKA TOYOICHI , TAKAMOTO MANABU , TETSU NORIYUKI , MIWATA SATOSHI , MAEDA HIROSHI
IPC分类号： H02B13/02
摘要： PURPOSE:To provide a gas insulated switchgear for reducing the installation area by employing a bypass disconnector. CONSTITUTION:A closed loop section comprising an instrument potential current transformer 13 and a bypass disconnector 22 connected electrically in parallel therewith is constituted on a plane substantially orthogonal to an installation surface. A connecting bus circuit 23 is provided perpendicularly to the orthogonal plane while extending substantially in parallel with the installation surface so that the connecting bus conduit 23 connects the closed loop section between power receiving units LU1, LU2 and transformer side units TU1, TU2.

8. 发明专利

JPS58150232A GAS BREAKER 失效
公开(公告)号：JPS58150232A
公开(公告)日：1983-09-06
申请号：JP3237482
申请日：1982-03-03
申请人： HITACHI LTD
发明人： TAKAMOTO MANABU , NAKANO SEIZOU , SASAKI KOUJI
IPC分类号： H01H31/32 , H01H33/64

9. 发明专利

JP2010192305A Commutation type direct current breaker 有权
标题翻译：传感型直流电流断路器
公开(公告)号：JP2010192305A
公开(公告)日：2010-09-02
申请号：JP2009036637
申请日：2009-02-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MUNAKATA NORIAKI , SUZUKI SANETOSHI , MATSUDA YOSHIHIKO , KAWAMURA NAOTERU , TAKAMOTO MANABU
IPC分类号： H01H33/59
CPC分类号： H01H33/596 , H01H33/161
摘要： PROBLEM TO BE SOLVED: To reduce a burden required for design and manufacture of a switchboard for a DC circuit which builds in a commutation type direct current breaker by constituting integrally a commutation type DC breaker body and equipment necessary for commutation. SOLUTION: The commutation type direct current breaker is provided with a main switch 3 which is inserted in series into a main circuit for connecting a DC power supply and a load, a commutating capacitor 8, a reactor 10, and a commutating switch 2, and cuts off the main switch by flowing electric charges accumulated in the commutating capacitor to the main switch in reverse direction to the main circuit current to form a current zero point. The commutating capacitor, the reactor, and the commutating switch which constitute a commutating circuit and a control circuit which carries out On-Off control of the main switch and the commutation switch are mounted on a pedestal 17 to mount the main switch. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过构成整流换向型DC断路器主体和换向所需的设备，减少用于形成换向型直流断路器的直流电路的配电板设计和制造所需的负担。解决方案：换向型直流断路器设置有主开关3，其串联插入用于连接直流电源和负载的主电路，换向电容器8，电抗器10和换向开关如图2所示，通过使积分在整流电容器中的电荷向主开关逆向主电路电流而切断主开关，形成电流零点。构成换向电路的整流电容器，电抗器和整流开关以及执行主开关和换向开关的开关控制的控制电路安装在基座17上以安装主开关。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2004247179A Fluid-pressure drive device of circuit breaker 审中-公开
公开(公告)号：JP2004247179A
公开(公告)日：2004-09-02
申请号：JP2003035930
申请日：2003-02-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SETO SHINJI , TAKAMOTO MANABU
IPC分类号： F15B1/02 , H01H33/30 , H01H33/40
CPC分类号： F15B11/006 , F15B1/024 , F15B13/044 , H01H33/30 , H01H33/40
摘要： PROBLEM TO BE SOLVED: To miniaturize a fluid-pressure drive device of a circuit breaker and to improve reliability thereof.
SOLUTION: This fluid-pressure drive device 3 of a circuit breaker has: a fluid-pressure cylinder 4 for switching a contact 2; an opening control valve 20 for operationally opening the fluid-pressure cylinder; a closing control valve 40 for operationally closing it; and solenoids 60 and 80 installed in the respective control valves for driving the control valves, respectively. The solenoids have plungers 32 and 52. In the opening operation and in the closing operation, the operation starting times of the opening control valve and the closing control valve are made different from each other.
COPYRIGHT: (C)2004,JPO&NCIPI

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