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We are specialized in manufacturing and export of CCTV security products and lightning arrester in China. Our products are Qualified Mini DVR,remote control DVR, DVR, CCTV Camera:IP Cameras, High Speed Dome Cameras,Day/Night IR IP camera,PTZ Dome Cameras, Dummy Camera,Video Distributor, Twisted-Pair Video Transceiver,Video Balun,Wireless Alarm, Wireless Doorbell, siren,solder,mould,surge protective device ( lightning arrester ),etc.
1 # 大 中 小 发表于 2004-3-8 17:55 只看该作者 全球ESD标准大全-2 IEC 60236:1974—Methods for the designation of electrostatic deflecting electrodes of cathode-ray tubes. IEC 60255-22-2:1996—Electrical relays—Part 22: Electrical disturbance tests for measuring relays and protection equipment—Section 2: Electrostatic discharge tests.
We are specialized in manufacturing and export of CCTV security products and lightning arrester in China. Our products are Qualified Mini DVR,remote control DVR, DVR, CCTV Camera:IP Cameras, High Speed Dome Cameras,Day/Night IR IP camera,PTZ Dome Cameras, Dummy Camera,Video Distributor, Twisted-Pair Video Transceiver,Video Balun,Wireless Alarm, Wireless Doorbell, siren,solder,mould,surge protective device ( lightning arrester ),etc.
A complete range of Surge Protective Devices (SPD) for protection against ligthning and overvoltages. Lightning strikes create surge currents which generate overvoltages in the power distribution and data transmission networks.
论文标题:二次设备防雷保护研究 Research on Lightning Protection of Secondary Devices 论文作者 论文导师 陈俊武,论文学位 硕士,论文专业 高电压与绝缘技术 论文单位 华中科技大学,点击次数 5,论文页数 73页File Size783K 2006-04-01 论文网 http://www.lw23.com/lunwen_967276287/ surge;; surge suppression;; varistor;; over-voltage ;;electromagnetic compatibility (EMC) 近年来二次设备遭受过电压危害已引起人们的广泛关注。 目前二次设备的浪涌保护器(如气体放电管、压敏电阻、瞬态抑制二极管等涌流保护器)是能够抑制涌流的简单有效的措施。 但是这种方法难以抑制涌流中的高频分量。 浪涌保护器在实际应用中存在分布电感和分布电容的影响,使得对浪涌信号中高频分量的抑制变得有限。
2. 喘振防护装置冲击电压保 surge propagation 喘振扩展...
查看完整版本: [-- IEC 61643-12 Low-voltage surge protective devices – Part 12: Surge protective devices connected to l --] [-- top --] Powered by PHPWind v7.3. 2 Code © 2003-08 PHPWind Time 0.076315 second(s),query:4 Gzip enabled You can contact us
For many years, lightning current and combined arresters based on creepage discharge spark-gap technology have been used for the integration of the low-voltage supply into the lightning equipotential bonding system, and spark-gap devices now safely protect hundreds of thousands of electrical systems throughout the world. Varistor based arresters, however, almost exclusively use metal oxide varistors (MOVs).
- 电涌保护技术讲座第六讲电源电涌保护器的布局 Lecture on Surge Protection Technology VI. Arrangement of Surge Protection Devices on Power Side in Building 作者:叶蜚誉, 期刊-核心期刊 低压电器LOW VOLTAGE APPARATUS 2004年 第07期
Surge Protective Device (Spd, Surge Protector, Surge Arrest, Surge Arrestor, Surge Arrester) 1. It is modularization design and can be replaced without cutting off power 2.
These are surge protective device discs (SPD disc) which are especially used in surge protective device. They are coated with insulative lacquer on the four edges. The copper leads can be produced according to customers’ requirements and specifications.
T3/E3/STS-1 LIU Secondary Surge Protection Design 作者：佚名 来源：本站整理 发布时间：2009-4-20 9:19:47 Abstract: Application note 398 is a design guide that has all the information necessary for a designer to build a network interface circuit for a piece of telecommunications equipment using Dallas Semiconductor T3, E3, or STS-1 line interface units (LIUs). The network interface is the part of the system that connects to other telecommunications equipment through coaxial cable.
One Step LH Ovulation Test 2009年06月10日 One Step LH Ovulation Test is fast and easy-to-use. It is a qualitative test that can predict when there is a LH (luteinizing hormone) surge, and in turn, when you are likely to ovulate.
Name： BY20 Surge protective device Model： BY20 Accessories： Content： Application BY20 type surge protective device (short name "SPD") is suitable for AC 50/60 Hz,380V and the following electric power systems,such as TT, IT, TN-S, TN-C, TN-C-S. It protects the electric network shocked by the thunder or over voltage.
An Overview of ESD Protection Devices Benny Lee Protecting circuits from harmful ESD requires understanding and selecting the right type of protection device. As electrostatic discharge (ESD) problems become more common in electronic circuits, devices based on various technologies have also become readily available to protect circuits from ESD.
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Sell Surge Protective Device 2009-2-21 Specifications 1) Protection class provides B 2) Composite type 1P, 2P, 3P, 4P 3) Max. continuous operating voltage (UC) 255V - 440V 4) Nominal discharge current (8/20μs) (In) 40kA, 50kA, 80kA 5) Max.
免责声明 ：以上信息 半导体放电管Thyristor Surge Protector Devices 由企业自行提供，内容的真实性和合法性由发布企业负责。 产品网对此不承担任何保证责任。 举报投诉：如发现违法和不良资讯，请联系我们。
Product Name： SVU5-RJ11/RJ45 Series Surge Protective Device Time：2008-9-9 10:10:27 Browse：528 SI系列导轨式信号保护器 SI系列产品是专门用于双绞线传输线路中的过电压信号保护器。 产品广泛适用于通信系统和工业自动化控制回路系统（如RS232、RS422、RS485、RS423…）的过电压保护、保护电路由三级保护元件组成，具有放电流大、输出残压低、使用寿命长等特点。
我的财讯 电子报订阅 首页 宏观经济 国际财经 股票 基金 期货 外汇 行业 个人理财 财讯社区 财讯服务 品味生活 模拟交易 你现在的位置: 首页 > > 机构专区 > > 内文页 L-Com Releases Panel Mount USB Surge Protector Coupler 发邮件 打印 2009年08月18日 North Andover, MA - July 23, 2009 - L-com, a global leader in the manufacture of wired and wireless connectivity products today announced the release of a new panel mount USB surge protector. The new product, AL-ECF504-AB, is a commercial quality device designed to protect a computer's sensitive USB ports from surges and spikes from attached devices.
A complete range of Surge Protective Devices (SPD) for protection against ligthning and overvoltages. Lightning strikes create surge currents which generate overvoltages in the power distribution and data transmission networks.
Surge Protection Devices Tianjin Yitong Electric Tec... Machinery & Electronics
Abstract: Application note 398 is a design guide that has all the information necessary for a designer to build a network interface circuit for a piece of telecommunications equipment using Dallas Semiconductor T3, E3, or STS-1 line interface units (LIUs). The network interface is the part of the system that connects to other telecommunications equipment through coaxial cable.
简 介： 1 General 1.1 Scope This part of IEC 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz a. c. and d. c.
JVS1 Surge Protective Device series(referred as SPD)provides protection against surge current resulted from direct or indirect lightning strike or other instantaneous overvoltage. Standard: GB18802.1-2002, IEC61643-1:1998 Main technical parameters: Type JVS1-A JVS1-B JVS1-C JVS1-D JVS1-E Max.
>2002年 第23卷 第02期 作者: 潘家利, 周茂华, 期刊 ISSN : 1001-5191(2002)02-0061-03 介绍在设备电源线路上安装的低压配电系统浪涌保护器(Surge protective Device 简称SPD)的基本要求及电涌保护系统最常见的元件及浪涌保护器主要的技术参数. 为微电子设备及信息系统减少雷电浪涌的危害找出相应的防护措施. 关键词: 浪涌保护器, 雷电浪涌防护, 多级保护, | 全部关键词
Surge Protector/Surge Suppressor/Power Supply/Surge Protection/Surge Arrester 公司: Chnze Electric Equipment Co. , Ltd. Surge Protector/Surge Suppressor/Power Supply/Surge Protection/Surge Arrester 公司: Chnze Electric Equipment Co. , Ltd.
Improved from OBO Germany, used in the filed of power distribution system, telecommunication and communication system. Main feature as below: 1.
Established in 1937 in France, Citel is a worldwide leader in design and manufacturing of surge protection devices. Headquarters in Issy les Moulineaux, Paris; 2 factories in Reims, France and Shanghai, China; Global coverage with 5 subsidiaries in USA, Germany, Holland, Brazil, China and more than 50 distributors; First Gas Discharge Tube (GDT) in 1944 – 60 years in surge protection; One of the largest GDT manufacturer in the world, 30 million per year; Full range of products for surge protection: Gas Discharge Tube (GDT); AC surge protection modules; AC surge protection panels; Data and telecom surge protection device; Surge Protection device for coaxial transmission.
Surge arresters. Part 3: Artificial pollution testing of surge arresters
The simplified lumped-parameter circuit model and the circuit method were used to study the protection distance problem of SPDs. The analytical solutions of the load voltage and generale quations of the protection distance of SPDs under different load conditions were given.
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