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21. 发明专利

JPH08249964A INSULATOR WITH BUILT-IN ARRESTER 失效
公开(公告)号：JPH08249964A
公开(公告)日：1996-09-27
申请号：JP5080495
申请日：1995-03-10
申请人： NGK INSULATORS LTD
发明人： ISHIBASHI CHIHIRO , MATSUMOTO JUNICHI
IPC分类号： H01B17/42 , H01T1/16
摘要： PURPOSE: To prevent damage to an insulating covering body caused by arc jet during discharge and prevent drop in dynamic current cut-off function of a non-linear resistance element caused by effective shunt current of surge current caused by contamination of the surface of the insulating covering body. CONSTITUTION: A discharge end part 35a of an arrester 30 embedded in an insulating covering body 20 covering an insulator main body 10 is positioned within a circular groove 23b in the bottom of a cylinder 23 arranged in the insulating covering body 20, and a discharge arc is diffused in the circular groove 23b to make temporarily stay. Discharge arc released to the outside is reduced, damage and contamination of the surface of the insulating covering body 20 caused by exposure to the arc are prevented.

22. 发明专利

JPH087996A CONNECTING BODY OF TRANSFORMER FOR POWER DISTRIBUTION 失效
公开(公告)号：JPH087996A
公开(公告)日：1996-01-12
申请号：JP14368794
申请日：1994-06-24
申请人： CHUBU ELECTRIC POWER , NGK INSULATORS LTD
发明人： MURAKI SHIGEHARU , KAWAMURA MASAHIRO , NAGASAKA HIROMI , MATSUMOTO JUNICHI , HONDA MITSUHIRO
IPC分类号： H01R4/00 , H01R17/04
摘要： PURPOSE:To simply perform the installation work of an arrester and to facilitate its mounting and demounting and to minimize a damaged scale even if the arrester is destructed. CONSTITUTION:A side inserting hole 40c is provided in the intermediate part of a connector 39 having an upper and a lower inserting hole 40a, 40b at both upper and lower terminals, respectively. One end of a junction line connected to a transformer 4 is connected to a cutout 2 each other through the upper and the lower inserting hole 40a, 40b of the connector 39. Under this state, an arreseter 42 is installed in an engaging hole 39c of the connector 39. The pin terminal 46a of the arrester 42 is engaged with the side inserting hole 40c of the connector 39. The arrester 42 is provided between the cutout 2 and the transformer 4. Or the arrester 42 is removed from the engaging hole 39c of the connector 39; and an adapter 61 at one end of a branch line 60 may be installed in the engaging hole 39c, instead.

23. 发明专利

JPH0654615B2 失效
公开(公告)号：JPH0654615B2
公开(公告)日：1994-07-20
申请号：JP13247686
申请日：1986-06-07
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , MATSUMOTO JUNICHI
IPC分类号： H01B17/00 , G01R15/22 , G02B6/00 , G02B6/25 , G02B6/46 , H01B17/14

24. 发明专利

JPH01319281A LIGHTNING PROTECTION DEVICE 失效
公开(公告)号：JPH01319281A
公开(公告)日：1989-12-25
申请号：JP15266188
申请日：1988-06-21
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , MATSUMOTO JUNICHI
IPC分类号： H01C7/12 , H01T1/14
摘要： PURPOSE:To enable the prevention of damage of a non-linear resistor or an insulating wrap body even if excessive lighting surge current is supplied by housing the non-linear resistor and a current limiting fuse connected in serial, in the insulating wrap body. CONSTITUTION:When a lightning surge current is generated in a line, this light ning surge current is discharged to the earth via a current limiting fuse 20 and non-linear resistor 13 connected in serial and housed in a glass 1. At this stage, if the lightning surge current is as small as as rated current of the non- linear resistor 13 or more smaller than it, the current limiting fuse 20 is not fused and the lightning surge current is discharged to the earth by the non-linear resistor 13 and a dynamic current is broken in a moment. When the lightning surge current is large than a discharge withstand current rating of the non-linear resistor 13, though a dynamic current breaking function of the non-linear resistor is lost but a fuse element 26 of the current limiting fuse 20 is melted in a moment so as to prevent the destruction of the non-linear resistor 13.

25. 发明专利

JPH01319211A COMPOSITE LIGHTNING RESISTIVE INSULATOR 失效
公开(公告)号：JPH01319211A
公开(公告)日：1989-12-25
申请号：JP15266088
申请日：1988-06-21
申请人： NGK INSULATORS LTD
发明人： MATSUMOTO JUNICHI
IPC分类号： H01C7/12 , H01B17/42 , H01T1/16
摘要： PURPOSE:To prevent the surface flash over through the surface dirt of a nonlinear resistor due to a lightning surge by joining and fixing a column, formed from a material having a non-linear voltage-current characteristic and having its one end abutting the voltage applied side and the other end abutting earth side, and insulating creases formed of porcelain with an inorganic material. CONSTITUTION:When a lightning surge current enters an electric wire 5, the lightning surge current flows through an insulator column 1 formed of a nonlinear resistor to base fittings 8, and is discharged to the earth side of an arm 11, etc. The continued current in the line following to the lightning surge is interrupted by the non-linear resistor constituting the column 1 so that an earthing accident, etc., are prevented. In addition, an undue lightning surge current unable to be discharged by the column 1 discharged to the base fittings 8 via an electrically conductive layer 14 on the insulator surface. As a result, the damage to the insulator owing to the arc of the non-linear resistor is reduced. Further, the non-linear resistor can be mechanically strengthened by providing a through-hole 1a in the column 1 and inserting a reinforcing member 16 such as FRP into the hollow part thereof and fixing it therein, and fixing the lower end of the reinforcing member 16 together with the column 1 to the base fittings 8.

26. 发明专利

JPS63294680A GAP UNIT FOR LIGHTING PROTECTOR 失效
公开(公告)号：JPS63294680A
公开(公告)日：1988-12-01
申请号：JP13095687
申请日：1987-05-27
申请人： NGK INSULATORS LTD
发明人： ISHIBASHI CHIHIRO , MATSUMOTO JUNICHI , OKA YUKIO
IPC分类号： H01T4/12
摘要： PURPOSE:To regulate an exhaust direction of discharged gas due to a dynamic current arc as well as to prevent the arc and damage to a line electric wire and a transformer or the like by connecting and fixing a conductive ceramics electrode, closing the bore, to one end of an insulative ceramics cylinder and a metallic plate electrode to the other end, respectively. CONSTITUTION:A conductive ceramics electrode 3 consisting of conductive ceramics is welded to the upper end face of a gap unit U1 and a metallic plate electrode 5 to the lower end face, respectively, thereby hermetically sealing a bore 2a of a ceramics cylinder 2. In an interval between semispherical discharge ends 3b and 7b of both electrodes 3 and 7, there is provided with the specified discharge gap G. A unit U2 is provided with the metallic plate electrode 5 and the discharge electrode 7 at both vertical ends. If both units U1 and U2 are hermetically sealed in a ceramic vessel 9, when the dynamic current due to lighting surge flows, the ceramics electrode 3 being high in a melting point is hard to be damaged even if high temperature, high pressure gas of an arc occurs in the discharge gap G, and these hot and high pressure gases fuse and break down these electrodes 5 and 7 and are exhausted downward. With this constitution, a gas discharge pressure direction is regulable and, what is more, arc damage to a line electric wire and peripheral equipment is preventable.

27. 发明专利

JPS6380493A ARRESTOR GAP UNIT 失效
公开(公告)号：JPS6380493A
公开(公告)日：1988-04-11
申请号：JP22640086
申请日：1986-09-25
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , ISHIBASHI CHIHIRO , MATSUMOTO JUNICHI
IPC分类号： H01T4/12

28. 发明专利

JPS6376289A ARRESTOR 失效
公开(公告)号：JPS6376289A
公开(公告)日：1988-04-06
申请号：JP21889486
申请日：1986-09-16
申请人： CHUBU ELECTRIC POWER , NGK INSULATORS LTD
发明人： SAKAKIBARA HIROMI , FUJIKI TOSHISADA , KATO KAZUAKI , ISHIBASHI CHIHIRO , MATSUMOTO JUNICHI
IPC分类号： H01T1/16 , H01T4/04

29. 发明专利

JPS62290017A CERAMIC INSULATOR WITH LIGHT TRANSMITTING BODY 失效
公开(公告)号：JPS62290017A
公开(公告)日：1987-12-16
申请号：JP13247686
申请日：1986-06-07
申请人： NGK INSULATORS LTD
发明人： KATO KAZUAKI , MATSUMOTO JUNICHI
IPC分类号： H01B17/00 , G01R15/22 , G02B6/00 , G02B6/25 , G02B6/46 , H01B17/14

30. 发明专利

JP2004200092A Arrestor with gap 有权
公开(公告)号：JP2004200092A
公开(公告)日：2004-07-15
申请号：JP2002369308
申请日：2002-12-20
申请人： Ngk Insulators Ltd , 日本碍子株式会社
发明人： MATSUMOTO JUNICHI , ASUKAI TETSUYA
IPC分类号： H01T1/16 , H01T4/04 , H01T4/10
摘要： PROBLEM TO BE SOLVED: To provide an arrestor with a gap that can provide a stable lightening function same as the conventional arrestor without damaging the peripheral equipment even when a zinc oxide element is destroyed.
SOLUTION: An electrode block 5 is fixed by a central insulating rod 3 on the upper end face of a zinc oxide element 1 of which the outer circumference is protected by a heat contraction tube 4. The whole part is integrated by arranging a gap spacer 14 having upper and lower discharge electrodes 12, 13 at their inside on the upper end surface of the electrode block 5, arranging a cap 16 thereon, and making the lower end part 19 of the cap engage with the electrode block 5. There are variety of cap 16 structure and engagement method to the electrode block 5.
COPYRIGHT: (C)2004,JPO&NCIPI

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