专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明专利

JPS5439861A REACTOR 失效
公开(公告)号：JPS5439861A
公开(公告)日：1979-03-27
申请号：JP10745477
申请日：1977-09-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： HIRAI MASAYOSHI , TAKECHI MORIAKI , MORITSU KAZUKI , MIURA YOSHIKAZU , SHIONO KATSUMI
IPC分类号： H01F30/08 , H01F27/245 , H01F27/36

3. 发明专利

JPS57184209A CONNECTION EQUIPMENT FOR INSULATION LEAD 失效
公开(公告)号：JPS57184209A
公开(公告)日：1982-11-12
申请号：JP6960181
申请日：1981-05-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： HARA KEIJI , HIRAI MASAYOSHI
IPC分类号： H01R4/58 , H01F27/04
摘要： PURPOSE:To establish easy disconnection of connection portion and reconnection by a method wherein a slipin contact is provided in the connection portion at the top end of an insulation lead and a movable connection conductor is mounted along the axial direction therein. CONSTITUTION:In tanks 1A,1B, flange portions 2A,2B of connection cylinder and coils 4A,4B, the male side 11 and female side 12 of a slipin contact are provided at the top end of insulation leads 5A, 5B and a connection conductor 10 is provided therein, which is inserted into the female side 12 and connectable to the male side 11. The connection conductor 10 has the coupling portion for coupling the male side 11 with the female side 12 and is withdrawn to the hollow interior of the insulation leads 5A, 5B in transporting the equipment and is taken out in achieving the connection through the coupling portion.

4. 发明专利

JPS57116266A INSULATION TESTOR 失效
公开(公告)号：JPS57116266A
公开(公告)日：1982-07-20
申请号：JP347781
申请日：1981-01-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUGA TOSHIROU , HIRAI MASAYOSHI
IPC分类号： G01R31/12
摘要： PURPOSE:To shorten the time required for the preparation and the test of various tests, by providing a bushing, a tank connected to said bushing, and a circuit breaker which is incorporated in said tank and can be operated from the outside of the tank, and a fluid insulating material contained in the tank. CONSTITUTION:The tester is constituted by the main body of the tank 11, the bushing 12 which is provided on one side of said tank 11, and the circuit breaker 13 which is incorporated in the main body of the tank 11. Said circuit breaker 13 and the bushing 12 are electrically connected by a lead 14. The circuit breaker 13 is operated by an operating shaft 15. Said operating shaft 15 is driven by an operating cabinet provided at the outside of the main body of the tank 11. The fluid insulating material such as insulating oil and insulating gas SF6 are contained in said main body of the tank 11. In this constitution, since the switching of the test circuit can be accomplished by operating only the circuit breaker 13, the tet time can be shortened, and the availability of the expensive test equipment can be improved.

5. 发明专利

JPS53120129A METHOD OF TESTING TRANSFORMER INSULATION 失效
公开(公告)号：JPS53120129A
公开(公告)日：1978-10-20
申请号：JP3587277
申请日：1977-03-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： HIRAI MASAYOSHI , TAMAOKI EIICHI , ISHII KOUICHI
IPC分类号： G01R31/06 , G01R31/00 , H01F30/00
摘要： PURPOSE:To facilitate measurement of the quantity of true local discharge within a test transformer by covering a high voltage terminal section with an insulator having a superior insulation permormance to air.

6. 发明专利

JPS5316827A PRESSURE RELEASER FOR OILLIMMERSED ELECTRIC MACHINERY 失效
公开(公告)号：JPS5316827A
公开(公告)日：1978-02-16
申请号：JP9097776
申请日：1976-07-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： SUGA TOSHIROU , HIRAI MASAYOSHI , MIURA YOSHIKAZU
IPC分类号： H01F27/02
摘要： PURPOSE:To guarantee operation and to improve reliability by installing pressure release film supporting mesh and cutter respectively on the inside and outside of pressure release film.

7. 发明专利

JPS52140845A VOLTAGE TRANSFORMER PROTECTION RELAY SYSTEM 失效
公开(公告)号：JPS52140845A
公开(公告)日：1977-11-24
申请号：JP5855476
申请日：1976-05-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： HIRAI MASAYOSHI , TAMAOKI EIICHI , ISHII KOUICHI , HATADA MINORU
IPC分类号： H02H7/045 , H02H7/04
摘要： PURPOSE:To reduce errors due to the current transformer by permitting use of entirely the same current transformer of such a structure as to take the difference between parallel symmetrical coils.

9. 发明专利

JPS6372105A INSULATING STRUCTURE OF LEAD WIRE 失效
公开(公告)号：JPS6372105A
公开(公告)日：1988-04-01
申请号：JP22590187
申请日：1987-09-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： TOBA YASUO , ISHIKAWA KIYOYUKI , HIRAI MASAYOSHI , TAMAOKI EIICHI
IPC分类号： H01F27/28
摘要： PURPOSE:To improve the dielectric strength of a lead wire by a method wherein a part of the insulation at the middle part of a lead wire, i.e. the connection part or bending part, is composed of an insulating layer which is continuous with the insulating layers of the other parts. CONSTITUTION:After a transformer is installed, connecting conductors 5a and 5b are connected. After 1st insulation 7c is applied by taping to the part between 2nd insulation 7a and 3rd insulation 7b, a continuous insulating layer 9a is formed by taping over the connected middle part B and the other parts of a lead wire 3. With this construction, the insulations are mutually bound mechanically and oil gaps are not created between the insulations even if a little external force is applied. Moreover, with this construction, as the surface part of the conductor, where an electric field is highest, is covered with an insulating layer 9b, even if a fine oil gap is created between the insulations, partial discharge is suppressed. With this constitution, the dielectric strength and the mechanical strength of the lead wire can be improved.

10. 发明专利

JPS6250049B2 失效
公开(公告)号：JPS6250049B2
公开(公告)日：1987-10-22
申请号：JP6961181
申请日：1981-05-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： ADACHI YASUHEI , HIRAI MASAYOSHI , TAMAOKI EIICHI , TOBA YASUO , ISHIKAWA KYOYUKI , AIDA TSUNETO
IPC分类号： H01F27/32 , H01B19/00 , H01F41/10 , H01F41/12

你已经成功收藏专利！

检索式保存成功!

IPRDB