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31. 发明专利

JPS63240303A ENCLOSED SWITCHBOARD AND METHOD OF COOLING THE SAME 失效
公开(公告)号：JPS63240303A
公开(公告)日：1988-10-06
申请号：JP28335187
申请日：1987-11-11
申请人： HITACHI LTD
发明人： MATSUZAKI ATSUHIDE , IDA MITSUYOSHI
IPC分类号： H02B1/56

32. 发明专利

JPS6327921B2 失效
公开(公告)号：JPS6327921B2
公开(公告)日：1988-06-06
申请号：JP7083381
申请日：1981-05-13
申请人： HITACHI LTD
发明人： IDA MITSUYOSHI
IPC分类号： H02B11/00 , H02B1/16 , H02B11/12

33. 发明专利

JPS6055809A ENCLOSED SWITCHBOARD 失效
公开(公告)号：JPS6055809A
公开(公告)日：1985-04-01
申请号：JP16186883
申请日：1983-09-05
申请人： HITACHI LTD
发明人： IDA MITSUYOSHI , OOTANI YUKIO
IPC分类号： H02B1/28

34. 发明专利

JPS5858805A BUS DISPOSING STRUCTURE FOR SWITCHBOARD 失效
公开(公告)号：JPS5858805A
公开(公告)日：1983-04-07
申请号：JP15768281
申请日：1981-10-02
申请人： HITACHI LTD
发明人： MATSUZAKI ATSUHIDE , IDA MITSUYOSHI
IPC分类号： H02B1/20

35. 发明专利

JPS57177515A CURRENT TRANSFORMER 失效
公开(公告)号：JPS57177515A
公开(公告)日：1982-11-01
申请号：JP6133881
申请日：1981-04-24
申请人： HITACHI LTD
发明人： IDA MITSUYOSHI
IPC分类号： H01F27/06 , H01F38/28 , H01F38/30
摘要： PURPOSE:To make omission of a core from supporting metal fittings to nil and to contrive to enhance fixing work of the supporting metal fittings of a current transformer by a method wherein the second insulating layer consisting of a thermally contractive insulating resin member is provided on a part of the first insulating layer, and the supporting metal fittings are fixed being unified in one body between both the layers thereof. CONSTITUTION:The first insulating layer 6 consisting of the thermally contractive insulating member is provided on the loop type core 2 wound around with the secondary winding 5, the second insulating layer 7 consisting of the thermally contractive insulating member is provided on the outside thereof, and the supporting metal fittings 9 are fixed between the first and the second insulating layers 6, 7 interposing a packing 8 between them. To fix the supporting metal fittings 9, the first thermally contractive insulating tape is wound around between the inside and the outside of the loop type core 2, and after the second thermally contractive insulating tape is wound around in condition that the supporting metal fittings 9 are made to come in contact with the outside of a part thereof interposing the packing 8 between them, the heat treatment is performed to enable to fix the supporting metal fittings 9 being unified in one body between the first and the second layers 6, 7.

36. 发明专利

JPS57153502A SHUTTER UNIT FOR ENCLOSED SWITCHBOARD 失效
公开(公告)号：JPS57153502A
公开(公告)日：1982-09-22
申请号：JP3794881
申请日：1981-03-18
申请人： HITACHI LTD
发明人： MATSUZAKI ATSUHIDE , IDA MITSUYOSHI
IPC分类号： H02B11/24

37. 发明专利

JPS56133905A ENCLOSED SWITCHBOARD 失效
公开(公告)号：JPS56133905A
公开(公告)日：1981-10-20
申请号：JP3615680
申请日：1980-03-24
申请人： HITACHI LTD
发明人： KURODA NAGAHARU , IDA MITSUYOSHI
IPC分类号： H02B11/04 , H02B1/20 , H02B11/12

38. 发明专利

JPS53146146A PRESSURE RELEASE FOR METALLCLAD SWITCHGEAR 失效
公开(公告)号：JPS53146146A
公开(公告)日：1978-12-19
申请号：JP5980077
申请日：1977-05-25
申请人： HITACHI LTD
发明人： IDA MITSUYOSHI
IPC分类号： H02B1/28
摘要： PURPOSE:To prevent fracture of metal-clad switchgear due to increase of gas pressure, by providing movable slitboard where pressure release port is presented due to increase of inner pressure.

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