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11. 发明专利

JPH056330B2 失效
公开(公告)号：JPH056330B2
公开(公告)日：1993-01-26
申请号：JP4681883
申请日：1983-03-18
申请人： NISSIN ELECTRIC CO LTD
发明人： NOGAWA SHUICHI , KUWATA MINORU
IPC分类号： H01F27/36 , H01F30/08

12. 发明专利

JPS6083312A NEUTRAL POINT GROUNDING REACTOR APPARATUS 失效
公开(公告)号：JPS6083312A
公开(公告)日：1985-05-11
申请号：JP19224083
申请日：1983-10-13
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： KURODA YUTAKA , HASEGAWA KIYOSHI , KUSUMOTO TOSHIO , MISAWA KAZUTAKA , KUWATA MINORU
IPC分类号： H01F30/08 , H01F39/00
摘要： PURPOSE:To generate a required resistance element and miniaturize an apparatus by enveloping an air-core coil with a metal enclosure made of stainless steel and providing a shield iron core outside of the enclosure. CONSTITUTION:An air-core coil 7 is enveloped with a metal enclosure 8 made of stainless steel. Outside of the enclosure 8, a shield iron core 9 is provided. The total construction is housed in a container 10. The leaking magnetic flux heats the container 10 but the iron core 9 is provided between the enclosure 8 and the container 10 against the leaking magnetic flux and overheating of the container 10 is prevented. This miniaturizes the apparatus.

13. 发明专利

JP2002329616A GAS-INSULATED WINDING EQUIPMENT 失效
公开(公告)号：JP2002329616A
公开(公告)日：2002-11-15
申请号：JP2001132412
申请日：2001-04-27
申请人： NISSIN ELECTRIC CO LTD
发明人： TAKEUCHI SHOICHI , MATSUBARA KATSUO , KUWATA MINORU , KONDO TOSHINARI
IPC分类号： H01F27/20 , H01F27/00 , H01F27/32
摘要： PROBLEM TO BE SOLVED: To take a sufficient measure against the global warming effect by not using SD6 gas in the insulating gases of gas-insulated winding equipment and, in addition, to prevent the lowering of the dielectric breakdown voltages of the insulating gases caused by the diffusion of electrons generated by microdischarge which occurs in wedge-shaped gaps existing between the contacting sections, etc., of insulating members in the atmospheres of the insulating of the insulating gases. SOLUTION: The gas-insulated wiring equipment as the wedge-shaped gaps G between the contacting sections of the insulating members (an electric field shield 14 and a coil retainer 15) in the atmospheres of the insulating gases 12 and 17 or between the contacting sections of charging-section conductors and the insulating members in the atmospheres of the gases 12 and 17. The insulating gases 12 and 17 are composed of mixed gases of N2 gas and electrically negative gases excluding the SF6 gas.

14. 发明专利

JP2000308260A ALTERNATE CURRENT FILTER 失效
公开(公告)号：JP2000308260A
公开(公告)日：2000-11-02
申请号：JP10759199
申请日：1999-04-15
申请人： NISSIN ELECTRIC CO LTD
发明人： KUWATA MINORU
IPC分类号： H02J3/01 , H02M1/12
摘要： PROBLEM TO BE SOLVED: To accurately perform correction by connecting a series resonance circuit of a main capacitor and a reactor to an AC power line, connecting a variable capacitor in parallel with the reactor, and continuously varying the capacitance of the variable capacitor for correcting the deviation of the resonance frequency. SOLUTION: A series resonance circuit 7 of a main capacitor 5 with a constant capacity and a reactor 6 with a constant inductance is connected to an AC power line 4, and a variable capacitor 8 for adjusting the resonance frequency is connected in parallel with the reactor 6. The main capacitor 5 and the reactor 6 set capacitance and inductance so that the series resonance frequency reaches the 11-th harmonic frequency. The capacitance of the variable capacitor 8 is varied continuously, and the deviation of the resonance frequency of the series resonance circuit 7 is automatically corrected, thus continuously varying the resonance frequency and accurately correcting the deviation of the resonance frequency.

15. 发明专利

JPH11144980A REACTOR 失效
公开(公告)号：JPH11144980A
公开(公告)日：1999-05-28
申请号：JP32217897
申请日：1997-11-07
申请人： NISSIN ELECTRIC CO LTD
发明人： KUWATA MINORU , MATSUI OSAMU
IPC分类号： H01F27/32 , H01F27/36 , H01F30/08 , H01F37/00
摘要： PROBLEM TO BE SOLVED: To allow temperature characteristics and the like of total losses of a reactor to be obtained correctly by setting the thickness of an electromagnetic shield to a value substantially equal to or smaller than the thickness of the skin defined at a predetermined frequency. SOLUTION: The thickness of an electromagnetic shield 2 is set to a value substantially equal to or smaller than the thickness of the skin defined at a predetermined frequency, such as the upper frequency of an AC filter to be applied. It is so designed that few frequency changes should occur due to the heat generated by the shield 2 at frequencies lower than that frequency, i.e., the dependency on frequency of the resistance of the shield 2 is eliminated. Further, the upper-end edge portion of the shield 2 is curved outwardly at an appropriate curvature over its entire circumference, thereby forming a reinforcing curved surface. As a result of this construction, the resistance of the shield 2 can be measured separately from other resistances of the reactor, and hence the temperature characteristics and the like of the total losses of the reactor can be obtained with a high degree of accuracy.

16. 发明专利

JPH1169615A NEUTRAL-POINT GROUNDING APPARATUS 失效
公开(公告)号：JPH1169615A
公开(公告)日：1999-03-09
申请号：JP27184997
申请日：1997-08-27
申请人： NISSIN ELECTRIC CO LTD
发明人： KUWATA MINORU , NOGAWA SHUICHI
IPC分类号： H01F29/02 , H02H3/34 , H02H9/08
摘要： PROBLEM TO BE SOLVED: To miniaturize a neutral-point grounding apparatus in which a reactor and a resistor are installed side by side. SOLUTION: A neutral-point grounding apparatus is constituted in such a way that a liquid resistor 5 or a ceramic resistor, which is connected in parallel with an air-core coil 2, is housed inside a container 1 for an air-core reactor device which is constituted so as to house the air-core 2 having a prescribed resistance and an electromagnetic shielding tube 3 inside the container 1, such that a conductor which forms the air-core coil 2 is used also as a liquid resistor 4 and that a reactance, a resistance which is connected in series with the reactance, and a resistance which is connected in parallel with a series circuit formed by the reactance and the resistance are provided.

17. 发明专利

JPH10177921A BLOCK IRON CORE FOR REACTOR 失效
公开(公告)号：JPH10177921A
公开(公告)日：1998-06-30
申请号：JP35965596
申请日：1996-12-18
申请人： NISSIN ELECTRIC CO LTD
发明人： GOTO AKIRA , MATSUI OSAMU , KUWATA MINORU , YAMAMOTO ISOO , NOGAWA SHUICHI
IPC分类号： H01F27/24
摘要： PROBLEM TO BE SOLVED: To protect the edge of a block iron core against separation and delamitation by a method wherein a gap plate slightly larger in size than the base of the block iron core composed of laminated magnetic steel plates of self-adhesive properties is bonded to the base, and cutouts deeper than the thickness of the bent part of suspending metal fittings are provided to the opposed peripheral sides of the gap plate. SOLUTION: A large number of magnetic steel plates 2 each coated with a self-adhesive film are laminated into a block iron core body 1 polygonal or nearly circular in cross section, and the laminated block iron core body 1 is formed into one piece by thermocompression bonding. A gap plate 3 is bonded to the base of the block iron core body 1, and a cutout 4 is provided to the opposed peripheral sides of the gap plate 3 respectively so as to make the edge face of the core body 1 exposed. The external shape of the gap plate 3 is equal to or slightly larger is size than that of the block iron core body 1, and the block iron core body 1 is suspended by an L-shaped suspending piece, wherein the bent part of the L-shaped suspending netal fittings is inserted into the cutouts 4 and engaged with the gap late 3. The gap plate is bonded to the base of L-shaped suspending metal fittings, so that the edge of the laminated magnetic steel plates can be protected against separation and delamitation.

18. 发明专利

JPH1092678A MANUFACTURE OF CUT CORE 失效
公开(公告)号：JPH1092678A
公开(公告)日：1998-04-10
申请号：JP27851996
申请日：1996-09-11
申请人： NISSIN ELECTRIC CO LTD
发明人： YAMAMOTO ISOO , MATSUI OSAMU , KUWATA MINORU , YAMANAKA HIDEKI
IPC分类号： C09J5/06 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To prevent winding of a wound core from loosening even in a cutting process by surely bonding grain oriented silicon steel plates of the wound core mutually. SOLUTION: A wound core 3 is constituted by winding a grain oriented silicon steel plate 2 which is formed by applying a self-fusing film to the surface. The shape of the wound core 3 is fixed and is fastened to be pressurized. Heating is carried out to generate fusing in the film applied to the grain oriented silicon steel plate 2 and the grain oriented silicon steel plates 2 are bonded mutually by fusing to be made integral. Thereafter, a fastening metallic part 4 is removed and the wound core 3 is cut.

19. 发明专利

JP2551107B2 失效
公开(公告)号：JP2551107B2
公开(公告)日：1996-11-06
申请号：JP13815988
申请日：1988-06-03
申请人： NISSIN ELECTRIC CO LTD
发明人： KUWATA MINORU , FUKUDA YOJI
IPC分类号： H01F27/34 , H01F27/40 , H01F29/02 , H02J3/18

20. 发明专利

JP2550663B2 失效
公开(公告)号：JP2550663B2
公开(公告)日：1996-11-06
申请号：JP13816088
申请日：1988-06-03
申请人： NISSIN ELECTRIC CO LTD
发明人： KUWATA MINORU
IPC分类号： H01F27/40 , H01F29/02 , H02J3/18

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