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公开(公告)号：JP2000106037A
公开(公告)日：2000-04-11
申请号：JP14417199
申请日：1999-05-25
Applicant: GEN ELECTRIC
Inventor： MINNICK MICHAEL GERALD , PATRICIA CHAPMAN IRWIN , REED CLIVE W
IPC: H01G4/22 , C08K3/34 , C08L91/00 , C10M101/04 , C10M103/06 , C10M105/02 , C10M107/06 , C10M107/34 , C10M111/02 , C10M111/04 , C10N30/02 , C10N40/16 , C10N50/00 , H01B3/20 , H01G4/04
Abstract: PROBLEM TO BE SOLVED: To provide a thixotropic insulating fluid that easily flows into a capacitor to fill the voids of a capacitor roll part, shows high viscosity when it has once flowed into the capacitor and consequently reduce the possibility of its leak from the capacitor by containing a vegetable oil, a transformer oil and a clay material and by showing a thixotropy index exceeding a specific value. SOLUTION: A vegetable oil is a low-viscosity hydrocarbon-based oil, one having high stability against temperature and pressure is selected, and preferably, a soybean oil is used for it. The concentration of the vegetable oil in a mixture is around 40-85 wt.%. A transformer oil is preferably a mineral oil-based insulating oil, is selected from ones having high stability against temperature and pressure, and the concentration of the transformer oil in the mixture is about 15-60 wt.%. A clay material is mixed in order to enhance the viscosity of the mixture. A suitable clay material is a montmorillonite clay, and the concentration of the clay material in the mixture is approximately 6 wt.% or less. An insulating fluid formed of the mixture shows a thixotropy index equal to or more than 20.
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公开(公告)号：JP2000055832A
公开(公告)日：2000-02-25
申请号：JP12085299
申请日：1999-04-28
Applicant: GEN ELECTRIC
Inventor： KRAHN JOHN RAYMOND , REED CLIVE W
Abstract: PROBLEM TO BE SOLVED: To provide a method for judging whether water exists in material or not. SOLUTION: A set of electrodes 36 and 38 is arranged on a surface 31 of the layer of material 32 to be monitored, and an electric field is established between both the electrodes. A phase angle for the electric field is measured with a frequency that is selected in advance and is compared with a phase angle that is measured in advance for the dry part of the material. When there is a significant difference between a phase angle regarding the material being monitored and a phase angle that has been measured in advance it indicates the presence of water in the material. The material to be monitored can be an electrically insulated material, for example that used for the conductive part of a watercool-type generator.
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公开(公告)号：CA2426530A1
公开(公告)日：2003-11-03
申请号：CA2426530
申请日：2003-04-24
Applicant: GEN ELECTRIC
Inventor： GAO GUANZHONG , HERD KENNETH G , REED CLIVE W , KORMAN CHARLES S
Abstract: A monitoring system (100) includes at least one partial discharge (pd) sens or (10). The pd sensor is configured to monitor a component (22) of an aircraft wiring system (130) and to acquire a monitoring signal. A method embodiment for monitoring an aircraft wiring system includes acquiring a number of monitori ng signals for a number of components of the aircraft wiring system using a number of partial discharge pd sensors. The method further includes conveying the monitoring signals from at least one of the pd sensors to a data acquisition system (40 ).
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公开(公告)号：BR0301047A
公开(公告)日：2004-08-17
申请号：BR0301047
申请日：2003-05-02
Applicant: GEN ELECTRIC
Inventor： GAO GUANZHONG , REED CLIVE W , KORMAN CHARLES STEVEN , HERD KENNETH G
Abstract: A monitoring system includes at least one partial discharge (PD) sensor. The PD sensor is configured to monitor a component of an aircraft wiring system and to acquire a monitoring signal. A method embodiment for monitoring an aircraft wiring system includes acquiring a number of monitoring signals for a number of components of the aircraft wiring system using a number of partial discharge PD sensors. The method further includes conveying the monitoring signals from at least one of the PD sensors to a data acquisition system.
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