公开(公告)号：US20020030958A1

公开(公告)日：2002-03-14

申请号：US09953392

申请日：2001-09-12

Applicant: Nokia Networks Oy

Inventor： Gosta Baarman ,  Kai Kiiskila ,  Veikko Virpioja

IPC: H02H009/06

CPC classification number: H04M3/18 ,  H02H3/33 ,  H02H9/06

Abstract: This invention relates to the protection against over-voltage situations in a telecommunications network. Especially, the invention relates to fault situations that are generated by a power distribution network. The idea of the invention is to protect the telecommunication equipment against any overvoltage caused by an external source. The invention uses a detector core around cables through which a common mode fault current goes. The subscriber line cables or the power & ground cables form a primary coil in a transformer. The transformer's secondary coil forms an output current, preferably for converting equipment that converts the fault current information into a suitable form for operational devices that perform a desired protection action.

Abstract translation: 本发明涉及电信网络中针对过电压情况的保护。 特别地，本发明涉及由配电网络产生的故障情况。 本发明的思想是保护电信设备免受由外部源引起的任何过电压。 本发明使用围绕电缆的检测器芯，共模故障电流通过该检测器芯。 用户线电缆或电源和接地电缆在变压器中形成初级线圈。 变压器的次级线圈形成输出电流，优选地用于转换将故障电流信息转换成用于执行期望的保护动作的操作装置的合适形式的设备。