-
公开(公告)号：US07558032B2
公开(公告)日：2009-07-07
申请号：US10564574
申请日：2004-07-08
IPC分类号： H02H7/04
摘要： A protection system for a transformer system that includes three single phase transformers with auxiliary secondary windings, respectively. The auxiliary secondary windings are connected to form an open delta configuration. The protection system is connected into the open delta configuration, between the auxiliary secondary windings of two of the transformers. The protection system includes a circuit having an element with a threshold voltage and current characteristic connected in series with a thermal protection device and a resistor.
摘要翻译： 一种用于变压器系统的保护系统，分别包括具有辅助次级绕组的三个单相变压器。 辅助次级绕组连接形成开放的三角形构造。 保护系统连接在两个变压器的辅助次级绕组之间的开放式三角形配置中。 保护系统包括具有与热保护装置和电阻器串联连接的阈值电压和电流特性的元件的电路。
-
公开(公告)号：US20070103823A1
公开(公告)日：2007-05-10
申请号：US10564574
申请日：2004-07-08
IPC分类号： H02H7/04
摘要： The subject of the invention is a protecting system for medium-voltage potential transformers, finding application in the attenuation of ferroresonant states occurring in at least one of three potential transformers in a three-phase medium-voltage network. The system according to the invention features an element with a threshold voltage and current characteristic (1) and a thermal fuse (2), which are connected in series between an attenuating resistor (R1) and the output of the auxiliary secondary winding of one of the single-phase transformers.
摘要翻译： 本发明的主题是用于中压电压互感器的保护系统，其用于在三相中压网络中的三个电压变压器中的至少一个中发生的铁分散状态的衰减。 根据本发明的系统具有阈值电压和电流特性（1）和热熔丝（2）的元件，其串联连接在衰减电阻器（R 1）和辅助次级绕组的输出之间 的单相变压器。
-
3.发明申请公开(公告)号：US20090323240A1
公开(公告)日：2009-12-31
申请号：US12438788
申请日：2007-07-27
IPC分类号： H02H9/00
CPC分类号： H01F37/00 , H01B17/005 , H01F3/10 , H01F2017/065 , H03H2001/0092
摘要： The subject of the invention is a device for suppressing high frequency current or/and voltage components, applicable in protecting electrical equipment, especially against the effects of overvoltage in electrical power networks and stations. The inventive device is characterised in that it contains a series impedance element which is at least one magnetic core reactor (1, 2) whose magnetic circuit comprises at least two active parts on which the reactor windings (3, 4) are wound, which are connected with each other in series and anti-parallel.
摘要翻译： 本发明的主题是用于抑制高频电流或/和电压分量的装置，可用于保护电气设备，特别是防止电力网络和电站中的过电压的影响。 本发明的装置的特征在于，其包含串联阻抗元件，其是至少一个磁芯反应器（1,2），其磁路包括至少两个有效部分，电抗器绕组（3,4）被缠绕在其上 串联和反并联相互连接。
-
公开(公告)号：US20100200039A1
公开(公告)日：2010-08-12
申请号：US12662170
申请日：2010-04-02
IPC分类号： H01L35/30
摘要： An arrangement is disclosed for supplying power to a field device used to monitor an industrial process in a plant, having an enclosure and a wireless communications interface for data communications with a central data-processing device, and having a thermoelectric converter, which converts an existing heat flow between two points at different temperatures into electrical power and supplies this power to the field device. The thermoelectric converter is arranged in a separate enclosure from the field device, and transfers the electrical power to the field device by means of electrical wires or wireless transmission.
摘要翻译： 公开了一种用于向用于监测工厂中的工业过程的现场设备供电的装置，具有用于与中央数据处理设备的数据通信的外壳和无线通信接口，并且具有热电转换器，其转换现有的 将不同温度的两点之间的热流转换为电力，并将该电力提供给现场设备。 热电转换器布置在与现场设备分离的外壳中，并且通过电线或无线传输将电力传送到现场设备。
-
公开(公告)号：US20070227572A1
公开(公告)日：2007-10-04
申请号：US11723944
申请日：2007-03-22
IPC分类号： H01L35/30
摘要： An arrangement is disclosed for supplying power to a field device used to monitor an industrial process in a plant, having an enclosure and a wireless communications interface for data communications with a central data-processing device, and having a thermoelectric converter, which converts an existing heat flow between two points at different temperatures into electrical power and supplies this power to the field device. The thermoelectric converter is arranged in a separate enclosure from the field device, and transfers the electrical power to the field device by means of electrical wires or wireless transmission.
摘要翻译： 公开了一种用于向用于监测工厂中的工业过程的现场设备供电的装置，具有用于与中央数据处理设备的数据通信的外壳和无线通信接口，并且具有热电转换器，其转换现有的 将不同温度的两点之间的热流转换为电力，并将该电力提供给现场设备。 热电转换器布置在与现场设备分离的外壳中，并且通过电线或无线传输将电力传送到现场设备。
-
-
-
-
搜索结果
5 条记录 (耗时 0.017 秒)
