-
公开(公告)号：US20230395288A1
公开(公告)日：2023-12-07
申请号：US17954596
申请日：2022-09-28
Applicant: POLYTRONICS TECHNOLOGY CORP.
Inventor： Hsiu-Che YEN , Yung-Hsien CHANG , Cheng-Yu TUNG , Chen-Nan LIU , Chia-Yuan LEE , Yu-Chieh FU , Yao-Te CHANG , Fu-Hua CHU
CPC classification number: H01C7/027 , H01C7/021 , H01C1/1406 , H02H9/026
Abstract: An over-current protection device includes first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler, and a titanium-containing dielectric filler. The polymer matrix has a fluoropolymer. The titanium-containing dielectric filler has a compound represented by a general formula of MTiO3, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing dielectric filler accounts to for 5-15% by volume of the PTC material layer.
-
公开(公告)号：US20180212418A1
公开(公告)日：2018-07-26
申请号：US15925252
申请日：2018-03-19
Applicant: Littelfuse, Inc.
Inventor： Boris Golubovic , Kunghao Yu
Abstract: A cable including a power conductor configured to transmit electrical power between a first device and a second device, a first data conductor configured to transmit data between the first device and the second device, and a first protection circuit coupled to the first data conductor and associated with a first temperature sensing element, the first protection circuit configured to mitigate current flowing through the first data conductor if a temperature detected by the first temperature sensing element rises above a predefined first trip temperature, wherein the opening of the first data line indicates a fault condition to a device to which the cable is connected, whereby electrical power flowing through the power conductor is resultantly mitigated.
-
公开(公告)号：US09997906B1
公开(公告)日：2018-06-12
申请号：US15711546
申请日：2017-09-21
Applicant: POLYTRONICS TECHNOLOGY CORP.
Inventor： Hsiu Che Yen , Yung Hsien Chang , Zhen Yu Dong , Yao Te Chang , David Shau Chew Wang
CPC classification number: H02H9/026 , C08L23/06 , C08L27/16 , C08L2207/062 , C09K5/14 , H01C7/02 , H01C7/021 , H01C7/027 , H01C7/028 , H01C7/10 , H02H9/02
Abstract: An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer has a resistivity less than 0.05 Ω·cm and comprises a polymer matrix, a conductive ceramic filler and a carbon-containing conductive filler. The polymer matrix comprises a fluoropolymer having a melting point higher than 150° C. and comprises 50-60% by volume of the PTC material layer. The conductive ceramic filler having a resistivity less than 500μΩ·cm is dispersed in the polymer matrix and comprises 40-45% by volume of the PTC material layer. The carbon-containing conductive filler is dispersed in the polymer matrix and comprises 0.5-5% by volume of the PTC material layer. At 25° C., a ratio of a hold current to an area of the over-current protection device is 0.21-0.3 A/mm2, and a ratio of an endurable power to the area of the over-current protection device is 4.8-7.2 W/mm2.
-
公开(公告)号：US20170264187A1
公开(公告)日：2017-09-14
申请号：US15510398
申请日：2015-08-26
Applicant: ALSTOM TECHNOLOGY LTD
Inventor： Bartosz LUKASIK , Francisco Jose MORENO MUNOZ , David Reginald , Jonathan STURGESS , Colin OATES
CPC classification number: H02M1/32 , H02H3/087 , H02H7/1206 , H02H9/021 , H02H9/023 , H02H9/026 , H02M7/217 , H02M7/537 , H02M2007/4835 , Y02E40/69
Abstract: A voltage source converter, for interconnecting electrical networks, comprises a converter structure which includes a terminal for connection to the first electrical network and a terminal for connection to the second electrical network. The converter structure also includes at least one module that is connected between the terminals. The module includes at least one energy storage device and at least one switching element. The energy storage element and switching element are operable to selectively provide a voltage source. The converter structure still further includes an integrated passive fault current limiter that is configured to present a first impedance to a normal current flowing in the voltage source converter during normal operation of the voltage source converter, and is configured to present a second impedance to a fault current flowing in the voltage source converter during a fault condition. The first impedance is lower than the second impedance.
-
公开(公告)号：US20170141565A1
公开(公告)日：2017-05-18
申请号：US15039257
申请日：2014-11-25
Inventor： William John White
IPC: H02H9/02
Abstract: A device for limiting the inrush current component of a current provided by a supply to a load, the device including an impedance arranged between the supply and the load, a switch arranged to divert the current from the impedance, an inrush period timer connected to the supply and arranged to activate the switch after expiry of an inrush time period, the inrush time period being a time period beginning upon the supply becoming active such that current is available to be provided by the supply to the load and a reset circuit connected to the supply and the inrush period timer, the reset circuit arranged to deactivate the switch and reset the inrush period timer in response to the supply becoming inactive such that no current is available to be provided by the supply to the load.
-
Patent Agency Ranking
公开(公告)号：US20170126024A1
公开(公告)日：2017-05-04
申请号：US15316819
申请日：2015-06-05
Applicant: Kevin Stephen Davies , Alexander Philip Davies
Inventor： Kevin Stephen Davies , Alexander Philip Davies
IPC: H02J7/00
CPC classification number: H02M7/483 , H02H9/026 , H02M2007/4835
Abstract: A system (10) for converting power comprising a plurality of modules (14) connected in series and having each at least one DC power source. Storage devices (18) are provided with each module (14) to store power from the power source and voltage control circuitry (19) in each module (14) connects the storage device between a maximum module voltage, a minimum module voltage to create a stepwise approximation of a mains signal. A compensator unit (20) is provided in series with the modules (14) including a storage device charged by the power sources. While each of the modules (14) is supplying either its maximum or minimum voltage to the system a control unit ramps up or down the voltage between the input and output of the compensator unit (20) to follow the desired AC signal. When the control unit operates a module (14) to vary the supplied voltage from either zero to the maximum or minimum values, or vice versa, the control unit applies via compensator voltage control circuitry a corresponding but opposed change in the voltage supplied by the compensator unit (20).
-
公开(公告)号：US09490628B2
公开(公告)日：2016-11-08
申请号：US14528949
申请日：2014-10-30
Applicant: LSIS CO., LTD.
Inventor： Jung Wook Sim , Gyeong Ho Lee , Hae Yong Park
Abstract: A fault current limiter is provided. According to an embodiment of the present disclosure, the fault current limiter includes a switch whose contact point is opened when a fault current occurs; a current limiting element configured to limit the fault current when the fault current occurs; and a diode being serial-connected to the current limiting element, wherein a breakdown voltage of the diode is higher than a voltage drop by an impedance of the switch when a normal current flows.
Abstract translation: 提供故障电流限制器。 根据本公开的实施例，故障限流器包括开关，其在故障电流发生时接触点断开; 限流元件，用于限制故障电流发生时的故障电流; 以及串联连接到限流元件的二极管，其中当正常电流流动时，二极管的击穿电压高于开关阻抗的电压降。
-
公开(公告)号：US20160189897A1
公开(公告)日：2016-06-30
申请号：US14907809
申请日：2014-07-17
Applicant: TYCO ELECTRONICS JAPAN G.K.
Inventor： Takashi Hasunuma , Arata Tanaka , Toshikazu Yamaoka
IPC: H01H37/76
CPC classification number: H01H37/761 , H01H85/048 , H01H2085/025 , H01H2085/0483 , H02H9/026
Abstract: An object of the present invention is to provide a protection device which is able to provide suitable protection against excessive current and the abnormal high temperature, has large holding current and does not have mechanical contact. The present invention provides a protection device including (i) at least one PTC component and (ii) a thermal fuse component, wherein each PTC component and the thermal fuse component are connected to each other electrically in parallel; the thermal fuse component is under the influence of heat of at least one PTC component; and in a normal state, a current flows substantially through each PTC component and the thermal fuse component.
Abstract translation: 本发明的目的是提供一种保护装置，其能够提供适合的过电流和异常高温保护，具有大的保持电流并且不具有机械接触。 本发明提供了一种保护装置，包括：（i）至少一个PTC部件和（ii）热熔丝部件，其中每个PTC部件和热熔丝部件彼此电连接; 热熔丝部件受到至少一个PTC部件的热的影响; 并且在正常状态下，电流基本上流过每个PTC部件和热熔丝部件。
-
公开(公告)号：US09300127B2
公开(公告)日：2016-03-29
申请号：US13916698
申请日：2013-06-13
Applicant: Samsung Electronics Co., Ltd
Inventor： Jin Ha Kim
Abstract: An interface unit that interrupts overcurrent or overvoltage resulting from a ground voltage difference between electronic products interconnected through interface devices, so as to prevent damage to the products and risk of fire. The interface unit, which connects a first electronic product and a second electronic product to each other, includes a first interface device provided in the first electronic product and connected with the second electronic product, a second interface device provided in the second electronic product and connected with the first interface device through a VCC line and a ground line, and a ground overcurrent interrupter installed on the ground line, the ground overcurrent interrupter interrupting overcurrent flowing in the ground line.
Abstract translation: 一个接口单元，其中断由通过接口装置互连的电子产品之间的接地电压差导致的过电流或过电压，以防止产品损坏和发生火灾。 将第一电子产品和第二电子产品彼此连接的接口单元包括设置在第一电子产品中并与第二电子产品连接的第一接口装置，设置在第二电子产品中并连接到第二电子产品的第二接口装置 第一接口设备通过VCC线和接地线，接地过流断路器安装在地线上，接地过流断路器中断地线中的过流。
-
公开(公告)号：US20150333506A1
公开(公告)日：2015-11-19
申请号：US14708076
申请日：2015-05-08
Applicant: LSIS CO., LTD.
Inventor： Seung Hyun BANG , Won Joon CHOE , MIN Jee KIM , Kil Young AHN
IPC: H02H9/02
Abstract: This specification relates to fault current limiter (FCL). More particularly, to solve problems of protecting and designing current limiting impedance in a protective coordination system, as limitations of the related art, the fault current limiter may measure heat capacity of a current limiting impedance unit by detecting fault current flowing to the current limiting impedance unit and limiting the fault current flowing to the current limiting impedance unit according to the measured heat capacity, which may result in preventing the current limiting impedance unit from being damaged due to the fault current, preventing an extended accident due to the damaged current limiting impedance unit and enabling a stabilized system and line protection.
Abstract translation: 本规范涉及故障限流器（FCL）。 更具体地，为了解决在保护性协调系统中保护和设计电流限制阻抗的问题，作为现有技术的限制，故障限流器可以通过检测流到限流阻抗的故障电流来测量限流阻抗单元的热容量 单元，并根据测量的热容量限制流向限流阻抗单元的故障电流，这可能导致阻止电流限制阻抗单元由于故障电流而损坏，从而防止由于损坏的电流限制阻抗引起的延长事故 并实现了稳定的系统和线路保护。
-
-
-
-
-
-
-
-
-
Search Results
267
records
(took 0.019 seconds)
