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1. 发明专利

JPS5113927A 失效
公开(公告)号：JPS5113927A
公开(公告)日：1976-02-03
申请号：JP8533374
申请日：1974-07-25
申请人： TOKYO ELECTRIC POWER CO , NIPPON KOEI CO LTD , NGK INSULATORS LTD
发明人： IWASAKI MINORU , NOGUCHI KOICHI , MORITA KENJI , NAKAYAMA TETSUYA
IPC分类号： G01R15/18 , H01F38/20

2. 发明专利

JPS5123620A 失效
公开(公告)号：JPS5123620A
公开(公告)日：1976-02-25
申请号：JP9654174
申请日：1974-08-21
申请人： NIPPON KOEI CO LTD , NGK INSULATORS LTD
发明人： NOGUCHI KOICHI , MORITA KENJI , NAKAYAMA TETSUYA
IPC分类号： H01F38/20 , H01F38/24 , H01F38/34

3. 发明专利

JPS5110328A 失效
公开(公告)号：JPS5110328A
公开(公告)日：1976-01-27
申请号：JP5848274
申请日：1974-05-24
申请人： NIPPON KOEI CO LTD , TOKYO ELECTRIC POWER CO
发明人： NOGUCHI KOICHI
IPC分类号： H01F38/20 , G01R15/06 , G01R15/20 , H01B17/28 , H01F27/42 , H01F38/28 , H01F38/34

4. 发明专利

JPH0634564B2 失效
公开(公告)号：JPH0634564B2
公开(公告)日：1994-05-02
申请号：JP22028886
申请日：1986-09-18
申请人： NIPPON KOEI CO LTD
发明人： NOGUCHI KOICHI , HAYAKAWA TADAAKI
IPC分类号： H02K11/00 , G01R31/06 , H02K19/36

5. 发明专利

JPS6377359A GROUND-FAULT DETECTOR FOR GENERATOR 失效
公开(公告)号：JPS6377359A
公开(公告)日：1988-04-07
申请号：JP22028886
申请日：1986-09-18
申请人： NIPPON KOEI CO LTD
发明人： NOGUCHI KOICHI , HAYAKAWA TADAAKI
IPC分类号： H02K11/00 , G01R31/06 , H02K19/36
摘要： PURPOSE:To simplify structure, and to miniaturize the title detector by detecting the change of the magnetic flux of a power coil for detecting ground-fault incorporated into a rotor core by a ground-fault detecting coil built in a stator core. CONSTITUTION:When a ground-fault takes place, a closed circuit returning to a power coil 15 for detecting grounding through the power coil 15, a rectifier 18, a field coil 6, a spider 17 or a shaft 16 and a current-limiting resistor 5 is formed, and currents from several dozen mA to several hundred mA flow. Induced voltage by the magnetic flux of an armature coil 8 and the power coil 15 is generated in a ground-fault detecting coil 20. Voltages induced in ground-fault detecting coils A and B by the magnetic flux of the armature coil 8 are mutually canceled, but voltages by the magnetic flux of the power coil 15 are not canceled, and voltage is induced in a synthesizing section 21 by the ground-fault detecting coils A, B respectively once during their one revolution. The voltage is compared with a set value by a comparison detecting section 23 through an amplifying section 22, and a relay 25 is operated, thus interrupting a circuit.

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