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公开(公告)号：US4052668A
公开(公告)日：1977-10-04
申请号：US558175
申请日：1975-03-13
CPC分类号： G01R15/16
摘要： In an apparatus comprising a high-voltage measuring capacitor and, in particular, comprising a high-voltage measuring capacitor formed by a high-voltage conductor of a fully insulated, metal-encapsulated high-voltage switch-gear installation and by a surface electrode associated with the former, an auxiliary capacitor is associated with and located adjacent to said high-voltage capacitor. The auxiliary capacitor is part of an evaluation device which generates a signal corresponding to capacitance changes of the auxiliary capacitor resulting from external influences. Following the evaluation device is an indicating device for signaling the occurrence of such capacitance changes and/or a control or regulating device for compensating for capacitance changes of the high-voltage measuring capacitor caused by the same external influences.
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公开(公告)号：US4363062A
公开(公告)日：1982-12-07
申请号：US268162
申请日：1981-05-29
CPC分类号： H01F38/24 , H02H1/0007 , H02H7/04
摘要： Disclosed are an inductive voltage transformer having a primary winding connected to a network line and a protective circuit therefor. In order to prevent a large thermal and mechanical stress in such a transformer, the protective circuit comprises a control unit which controls a switching device for connecting a circuit arrangement to a secondary winding of the voltage transformer. The circuit arrangement includes a current generating circuit with a charging capacitor. The protective circuit operates to generate a current causing a counter excitation in the transformer to that caused when the capacitance of the network line is discharged via the primary winding of the transformer. The voltage transformer and the protective circuit are suited particularly for connection to network lines having a large internal capacitance.
摘要翻译： 公开了具有连接到网络线路的初级绕组和其保护电路的感应式电压互感器。 为了防止这种变压器中的大的热和机械应力，保护电路包括控制单元，该控制单元控制用于将电路装置连接到电压互感器的次级绕组的开关装置。 该电路装置包括具有充电电容器的电流产生电路。 保护电路用于产生导致变压器中的反激励的电流，使得当网线的电容经由变压器的初级绕组放电时引起。 电压互感器和保护电路特别适用于连接到具有大内部电容的网线。
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3.发明授权Voltage transformer for an insulated high-voltage switching installation containing several conductors 失效用于绝缘高压开关设备的电压互感器包含多个导体
公开(公告)号：US3988684A
公开(公告)日：1976-10-26
申请号：US450432
申请日：1974-03-12
IPC分类号： H01F38/20 , G01R15/16 , H01F27/42 , H01F38/24 , H01F38/38 , H02B13/02 , H02M11/00 , G01R15/06
摘要： A voltage transformer for a fully insulated high-voltage installation containing several conductors includes a plurality of electrodes corresponding to respective ones of the conductors. The electrodes are disposed outside of the arrangement of the conductors in such a manner that each one of the electrodes is disposed directly adjacent a corresponding one of the conductors. Each of the electrodes and the conductor directly adjacent thereto conjointly define a high-voltage capacitor. A plurality of low-voltage capacitors are disposed outside of the region occupied by the electrodes and are connected to corresponding ones of the high-voltage capacitors so as to conjointly define therewith respective capacitive voltage dividers.
摘要翻译： 用于具有多个导体的完全绝缘的高压设备的变压器包括对应于各个导体的多个电极。 电极以这样的方式设置在导体的布置之外，使得每个电极直接邻近相应的一个导体设置。 每个电极和与其直接相邻的导体共同限定高压电容器。 多个低电压电容器设置在由电极占据的区域的外部，并且连接到相应的高压电容器，以便与其相应地限定各自的电容分压器。
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公开(公告)号：US3942099A
公开(公告)日：1976-03-02
申请号：US470907
申请日：1974-05-17
CPC分类号： H01G2/00 , G01R15/14 , H01B17/28 , H02B13/0356 , H02G5/068 , Y10S174/10
摘要： A measuring transformer arrangement with a capacitor bushing and devices for measuring voltage and current associated with the capacitor bushing is suitable for use in a high-voltage installation with metal encapsulation carrying several high-voltage conductors. The capacitor bushing provided for each high-voltage conductor is arranged in a bulkhead partition of the metal encapsulation and carries a current measuring device which includes at the periphery of the bushing at least one current transformer core with a secondary winding system mounted thereon.
摘要翻译： 具有电容器衬套的测量变压器装置和用于测量与电容器套管相关的电压和电流的装置适用于具有承载几个高压导体的金属封装的高压安装。 为每个高电压导体提供的电容器衬套被布置在金属封装的隔板分隔件中并且承载电流测量装置，该电流测量装置在衬套的外围包括至少一个电流互感器芯，其上安装有次级绕组系统。
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