公开(公告)号：EP1142280A1

公开(公告)日：2001-10-10

申请号：EP99955619.4

申请日：1999-11-18

Applicant: Nortel Networks Limited

Inventor： HANDFORTH, Martin, R. ,  HUPE, Gerard, J. ,  McGINN, Donald S. ,  MEIER, Rolf, G. ,  PLANTHARA, Canute ,  WONG, Raymond, K.

IPC: H04M3/18 ,  H04M3/00 ,  H04M19/00

CPC classification number: H04M3/18 ,  H04M3/005 ,  H04M19/001 ,  H04M2201/80

Abstract: A protection arrangement for a telephone subscriber line interface circuit is disclosed. The arrangement is particularly useful for protecting an electronic telephone set from over-voltage and over-current fault conditions. The arrangement provides a FET (34) that operates in saturation mode to connect an office battery (22) to the subscriber line under normal operation. The FET (34) also provides isolation capabilities for protecting the line circuit from an over-current condition on the subscriber line. Over-voltage protection is provided by way of an isolation relay (12) between the line circuit and the subscriber line. Both the FET and isolation relay are operated by a controller (16) that uses timers in the methods of over-voltage and over-current protection that it performs. A further capability of the arrangement is that is resets itself after the fault condition has ended. This feature is particularly useful in the case of fault conditions of short duration.

公开(公告)号：EP0571109A2

公开(公告)日：1993-11-24

申请号：EP93303518.0

申请日：1993-05-06

Applicant: AT&T Corp.

Inventor： Elder, Joseph Marcus, Jr.

IPC: H04M3/18 ,  H04M3/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: By opening switches (14,15) coupling a subscriber loop to circuits in a SLIC (10) when an overvoltage condition occurs, the SLIC is protected from damage. The overvoltage is detected by a overvoltage protector (16) behind the switches. The overvoltage condition is latched (26) and the common control is notified of the condition. The common control may then clear the latch, reclosing the switches. If the overvoltage still exists, the switches are re-opened and maintenance personnel is notified of the fault.

Abstract translation: 当发生过电压状况时，通过打开将用户回路耦合到SLIC（10）中的电路的开关（14,15），可防止SLIC免受损坏。 过电压由开关后面的过电压保护器（16）检测。 过电压状态被锁存（26），并通知通用控制条件。 然后，公共控制可以清除闩锁，重新闭合开关。 如果过电压仍然存在，则重新打开开关，并向维护人员通知故障。

公开(公告)号：US20130070383A1

公开(公告)日：2013-03-21

申请号：US13621321

申请日：2012-09-17

Applicant: Raymond Pepe

Inventor： Raymond Pepe

IPC: H02H3/20

CPC classification number: H02H3/20 ,  H04M1/745 ,  H04M2201/80

Abstract: A protector module for use with a communication system, such as a telephone system having a tip line and a ring line, includes a base member and a plurality of electrically conductive pins mounted on the base member. A first electrical contact is fixedly mounted on the top surface of the base member and is in electrical communication with one of the tip line and the ring line. A movable second electrical contact is connected to a ground pin mounted on the base member and is situated in alignment with the first electrical contact. A solder pellet, which may melt in high current, long duration power surges, and a solid state device, are positioned between the first and second electrical contacts.

Abstract translation: 用于通信系统的保护器模块，例如具有尖端线和环形线的电话系统，包括基座部件和安装在基座部件上的多个导电销。 第一电触点固定地安装在基底构件的顶表面上并与尖端线和环线之一电连通。 可移动的第二电触头连接到安装在基座构件上的接地销，并且与第一电触头对准。 可以在高电流，长时间的功率浪涌中熔化的焊料颗粒和固态设备位于第一和第二电触点之间。

公开(公告)号：US20050099755A1

公开(公告)日：2005-05-12

申请号：US10705415

申请日：2003-11-10

Applicant: David Martin ,  Curtis Dietzsch

Inventor： David Martin ,  Curtis Dietzsch

IPC: H01T1/14 ,  H02H9/06 ,  H04M3/18

CPC classification number: H01T1/14 ,  H02H9/06 ,  H04M3/18 ,  H04M2201/80 ,  Y02A30/50

Abstract: A surge protection device includes a gas discharge tube surge protector connected between a Tip line and a Ring line, and further includes solid state heat-generating resistive elements in the Tip and Ring lines, and thermally-responsive sneak current grounding switches in the Tip and Ring lines that have an untripped position connecting Tip and Ring line terminals of the surge protector respectively to the Tip and Ring line resistive elements, and a tripped position in which they ground the Tip and Ring line terminals. The switches are switched to their tripped position in response to the heat generated in the resistive elements as a consequence of current passing through them that exceeds a predetermined current level. A surge suppression element is connected in parallel with each of the resistive elements. The resistive elements are preferably carbon film resistors, and the surge suppression elements are preferably transient voltage suppression diodes.

Abstract translation: 浪涌保护装置包括连接在尖端线和环线之间的气体放电管浪涌保护器，并且还包括尖端和环形线中的固态发热电阻元件，以及尖端中的热响应潜行电流接地开关 具有将电涌保护器的尖端和环线端子分别连接到尖端和环线电阻元件的脱扣位置的环形线以及它们将尖端和环形线路端子接地的跳闸位置。 响应于电流元件中产生的热量，开关切换到跳闸位置，这是由于电流通过它们而超过预定电流水平的结果。 浪涌抑制元件与每个电阻元件并联连接。 电阻元件优选为碳膜电阻器，浪涌抑制元件优选为瞬态电压抑制二极管。

公开(公告)号：US20050073793A1

公开(公告)日：2005-04-07

申请号：US10679196

申请日：2003-10-03

Applicant: Mohammad Masghati

Inventor： Mohammad Masghati

IPC: H02H9/02 ,  H02H9/04 ,  H04M3/18 ,  H02H9/06

CPC classification number: H02H9/042 ,  H02H9/026 ,  H04M3/18 ,  H04M2201/80

Abstract: A dual stage current limiting surge protector system for protecting telecommunications equipment from power and surge transients is provided. The surge protector system includes a voltage suppressor having first and second ends operatively coupled between input tip and ring terminal pins. The first and second ends of the voltage suppressor are also operatively coupled between output tip and ring terminal pins. First and second current limiting devices are interconnected between the input tip and ring terminal pins and the respective first and second ends of the voltage suppressor. Third and fourth current limiting devices are interconnected between the output tip and ring terminal pins and the respective first and second ends of the voltage suppressor.

Abstract translation: 提供了一种用于保护电信设备免受电力和浪涌瞬变的双级限流浪涌保护器系统。 浪涌保护器系统包括电压抑制器，其具有可操作地耦合在输入尖端和环形端子引脚之间的第一和第二端。 电压抑制器的第一端和第二端也可操作地耦合在输出尖端和环形端子引脚之间。 第一和第二限流装置在输入尖端和环形端子引脚与电压抑制器的相应的第一和第二端之间互连。 第三和第四限流器件在输出尖端和环形端子引脚与电压抑制器的相应的第一和第二端之间互连。

公开(公告)号：US20040027754A1

公开(公告)日：2004-02-12

申请号：US10214838

申请日：2002-08-08

Applicant: General Instrument Corporation

Inventor： Phillip Kent Freyman

IPC: H02H003/20

CPC classification number: H04M3/18 ,  H02H9/026 ,  H02H9/041 ,  H04M2201/80

Abstract: A method and/or device that may be used in locations where equipotential bonding is not practiced can be installed on a customer premises equipment device basis that provides over-voltage protection between the AC main and HFC ground planes. According to one aspect of the present invention, a bonding link is established between the AC main and the HFC coaxial braid that allows energy surges to bypass the CPE equipment and to be passed on to the AC mains, which are traditionally more equipped to deal with these large energy surges. According to another aspect of the present invention, an apparatus is disclosed that may be incorporated into any premises powered HFC CPE device for protection. The apparatus provides a surge energy bypass path around the CPE device being protected and allow voltage differentials to be normalized between systems.

Abstract translation: 可以在不实施等电位连接的位置使用的方法和/或设备可以安装在基于客户驻地设备设备的基础上，在AC主站和HFC接地层之间提供过电压保护。 根据本发明的一个方面，在AC主体和HFC同轴编织物之间建立了一个接合链路，其允许能量浪涌绕过CPE设备并被传递到交流电源，传统上更有能力处理 这些大的能量激增。 根据本发明的另一方面，公开了可以并入到用于保护的任何房屋供电的HFC CPE装置中的装置。 该设备提供围绕被保护的CPE设备的浪涌能量旁路路径，并允许电压差在系统之间被归一化。

公开(公告)号：US06563926B1

公开(公告)日：2003-05-13

申请号：US09361854

申请日：1999-07-27

Applicant: Anthony A. Pistilli

Inventor： Anthony A. Pistilli

IPC: H04M100

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A surge reset circuit used to automatically reset a surge protection circuit within a telephone line interface circuit. A sensor (e.g., a zenering device) advantageously generates a voltage level representing current draining out of the transient voltage suppression portion of the surge protection circuit after a transient energy surge. If the current is draining, which may indicate a potential lockup situation, feedback circuitry generates a reset feedback signal that is provided to a cutoff device. The cutoff device, in response to receiving the feedback signal, disables a current limiter portion of the surge protection circuit to reduce the current draining from the transient voltage suppression portion. As the current level is reduced, the transient voltage suppression portion will reset when the current drops below a threshold value or is substantially eliminated. As a result, the feedback circuitry removes the reset feedback signal from the cutoff device to re-enable the current limiter.

Abstract translation: 浪涌复位电路，用于自动复位电话线接口电路内的浪涌保护电路。 传感器（例如，齐纳装置）有利地在瞬态能量浪涌之后产生表示从浪涌保护电路的瞬态电压抑制部分排出的电流的电压电平。 如果电流正在排水，这可能表示潜在的锁定情况，反馈电路产生提供给切断装置的复位反馈信号。 截止装置响应于接收到反馈信号而禁用浪涌保护电路的限流器部分，以减小从瞬态电压抑制部分流出的电流。 当电流电平降低时，当电流下降到阈值以下或基本上消除时，瞬态电压抑制部分将复位。 结果，反馈电路从切断装置去除复位反馈信号以重新启用限流器。

公开(公告)号：US6108183A

公开(公告)日：2000-08-22

申请号：US237984

申请日：1999-01-25

Applicant: Gerald W. Beene

Inventor： Gerald W. Beene

IPC: H04M3/18 ,  H02H3/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: A current limiter is provided that includes a power switch for receiving input power from a power source and passing at least a portion of the input power to an output, a current sense mechanism coupled to the power switch for sensing current flowing through the current limiter and for providing a current flow signal related to the current flow through the current limiter, and a control mechanism coupled to the power switch that causes the power switch to reduce the current flow when the current flow signal indicates that the current flow exceeds a first current flow level. In one embodiment the current limiter may include a voltage sense mechanism that senses the voltage drop across the input to output of the device and use a reference voltage and a control loop to maintain the voltage drop relatively constant at all load currents. In another embodiment the current limiter may include a timing mechanism that provides a timing signal that is used by the control mechanism to cause the power switch to block power transmission to the load. In yet another embodiment the current limiter may include a temperature sensing mechanism that provides a first temperature signal that is used by the control mechanism to cause the power switch to block power transmission when the temperature signal indicates that a monitored temperature exceeds a reference temperature. Optionally, the current limiter may include a surge voltage protection mechanism that blocks high voltage power surges from the output. Also, the current limiter may include short circuit protection means.

Abstract translation: 提供了限流器，其包括用于从电源接收输入功率并将至少一部分输入功率传递到输出的电源开关，耦合到电源开关的电流感测机构，用于感测流过限流器的电流;以及 用于提供与通过限流器的电流相关的电流流动信号;以及耦合到电源开关的控制机构，当电流流动信号指示电流超过第一电流时，电流开关减小电流 水平。 在一个实施例中，电流限制器可以包括电压感测机构，其感测输入到设备的输出端的电压降，并且使用参考电压和控制回路来在所有负载电流下保持电压降相对恒定。 在另一个实施例中，电流限制器可以包括定时机构，其提供由控制机构用于使电源开关阻断向负载的电力传输的定时信号。 在又一个实施例中，限流器可以包括温度感测机构，其提供当温度信号指示所监视的温度超过参考温度时由控制机构使用的第一温度信号以使功率开关阻止功率传输。 可选地，电流限制器可以包括阻止来自输出端的高压功率浪涌的浪涌电压保护机构。 此外，限流器可以包括短路保护装置。

公开(公告)号：US5490215A

公开(公告)日：1996-02-06

申请号：US241868

申请日：1994-05-12

Applicant: Dimitris J. Pelegris

Inventor： Dimitris J. Pelegris

IPC: H02H9/04 ,  H04M3/18

CPC classification number: H04M3/18 ,  H02H9/048 ,  H04M2201/80

Abstract: A fiber to curb and telecommunications T1 carrier overvoltage protection apparatus includes a pair of semiconductor junction breakdown crowbar devices connected in series between TIP and RING telephone lines, and a reverse standoff voltage breakdown zener-type device connected between ground potential and a junction connection of the series connected semiconductor junction breakdown crowbar devices.

Abstract translation: 光纤到路缘和电信T1载波过电压保护装置包括在TIP和RING电话线之间串联连接的一对半导体结击穿撬棒装置，以及连接在地电位和地电位之间的反向隔离电压击穿齐纳型装置 串联连接半导体结击穿撬棒器件。

公开(公告)号：US5392349A

公开(公告)日：1995-02-21

申请号：US885098

申请日：1992-05-18

Applicant: Joseph M. Elder, Jr.

Inventor： Joseph M. Elder, Jr.

IPC: H02H3/20 ,  H04M3/18 ,  H04Q3/42 ,  H04M7/00

CPC classification number: H04M3/18 ,  H04M2201/80

Abstract: By opening switches coupling a subscriber loop to circuits in a SLIC when an overvoltage condition occurs, the SLIC is protected from damage. The overvoltage is detected by a overvoltage protector behind the switches. The overvoltage condition is latched and the common control is notified of the condition. The common control may then clear the latch, reclosing the switches. If the overvoltage still exists, the switches are re-opened and maintenance personnel is notified of the fault.

Abstract translation: 当发生过电压状态时，通过打开将用户环路耦合到SLIC中的电路的开关，可以保护SLIC免受损坏。 过压由开关后面的过电压保护器检测。 锁存过压状态，通知通用控制条件。 然后，公共控制可以清除闩锁，重新闭合开关。 如果过电压仍然存在，则重新打开开关，并通知维护人员故障。