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cellspacing="1"> <tr> <td width="85" align="center" class="bule">提供商：</td> <td width="185" align="left">东莞市广联自动化科技有限公司 </td> <td width="74" align="center" class="bule">资料大?。?/td> <td width="167" align="left">PNG</td> </tr> <tr> <td align="center" class="bule">图片类型：</td> <td align="left" >PNG</td> <td align="center" class="bule">下载次数：</td> <td align="left" >327 次 </td> </tr> <tr> <td align="center" class="bule">资料类型：</td> <td align="left">PDF</td> <td align="center" class="bule">浏览次数：</td> <td align="left">1087次</td> </tr> <tr> <td align="center" class="bule">下载链接：</td> <td colspan="3" align="left" ><a href = /DownLoadFile_446345_F.html target=_blank>文件下载</a> <a href = /DownLoadFile_446345_I.html target=_blank>图片下载</a> </td> </tr> </table></td> </tr> <tr> <td class="f14"> 详细介绍</td> </tr> <tr> <td class="downc"><p>东莞广联工业自动化设备有限公司供应的<a >SEL-751馈线?；ぜ痰缙?/a>质量可靠、规格齐全，*。东莞广联不仅具有*的技术水平，还有良好的售后服务团队，凭着多年经营经验，熟悉并了解市场行情，赢得了国内外厂商的信任与支持*！</p><p>美国<a >SEL-751馈线保护继电器</a>，是方向过电流、故障定位、弧光检测、以及高阻抗故障检测应用的理想选择。具有灵活的I/O选项、方便的安装以及快捷的定值，使得SEL-751成为工业和电力公用领域馈线?；さ恼方饩龇桨?。SEL-751可提供完整的馈线保护，包括过电流、过电压、低电压、方向功率、IEC 电缆/线路的热?；?、矢量偏移、灵敏接地故障 (SEF)、负荷入侵以及频率元件。选择5英寸，800×480彩色触摸屏显示选项，直接设置，监控和控制您的系统?？梢苑奖闵侗；ぃ扌柙谠锌谏锨懈罨蜃昕?，具有紧凑的箱体以及多种安装适配器。拥有IEC 61850（第 2 版）、IEC 60870-5-103、IEC 62439 并行冗余协议 (PRP)、Mirrored Bits镜像位通讯、Modbus、DNP3、以及其他规约，能够与基于串行或以太网的通讯实现快速集成。<br />美国SEL-751馈线?；ぜ痰缙鞯墓δ苡τ?br />馈线?；?- 具备包括反时限过电流、方向过电流、自动重合闸、过压/低压、频率、第二和第五谐波闭锁、可选低能耗模拟 (LEA) 电压输入、IEC 电缆/线路热敏元件、孤岛效应检测及其它综合性?；すδ?，可?；し湫我约盎沸闻涞缁芈?。</p><p>灵敏的中性点输入 - 采用200mA中性点电流输入选项，利用方向控制功能，?；じ咦杞拥?、不接地和消弧线圈接地系统?；箍山?00mA中性点电流输入选项，用于无方向SER?；すδ?。</p><p>弧光检测 - 具备可选的弧光检测能力，改善人员安全性。SEL-751对于弧光事件，可提供光强和高速过电流检测的组合，提供快速和安全的理想解决方案。</p><p>高阻抗故障检测 - 采用弧光感测技术（AST）, 可检测断线，即使是对于接触不良的表面。AST算法可检测由于一些高阻抗故障引起的弧闪，可用于告警或者跳开断路器。该项技术为传统的馈线?；し椒?，提供了更多一层的?；?。<br />自动化和控制 - SEL-751可应用于馈线并同时提供?；ぷ远约翱刂乒δ堋?/p><p>事件分析 - SEL-751提供详细的事件记录，更有效地进行事后分析。有效组合了波形和数字量信息，有利于找出根本原因。通过增加卫星同步时钟源，如SEL-2401、SEL-2407、或SEL-2488卫星同步时钟，可方便对齐多个设备的事件信息。</p><p>状态认知 - 利用IEEE C37.118同步相量测量，可增进状态认知和资产利用。</p><p>恶劣环境可靠性 - 即使恶劣和危险环境，SEL-751也可提供可靠的?；ず涂刂朴τ谩EL-751 的设计和测试，达到并超出公用事业和工业标准。–40° 至 +85°C（–40° 至 +185°F）的运行温度范围；1 级、2 区许可；可选的保形涂层，意味着该继电器可提供数年的可靠服务。</p><p>故障定位 - 故障定位算法，可快速发现故障并恢复服务。采用串行口或以太网通讯以及SCADA规约，可自动发送故障定位信息到控制中心。<br />完整的馈线?；?br />采用反时限和瞬时过电流、过电压、低电压、方向功率、以及频率元件，zui大化控制方案的灵活性，具有断路器失灵?；?，适用于一个三相断路器。第二和第五谐波闭锁提高了由线路重新通电，或在区外故障后由电压恢复引起的励磁涌流条件期间的保护安全。</p><p>可选的方向控制<br />利用带有方向控制的过电流元件，优化线路和设备的辐射和环形网络?；ぁ?选择接地方向元件逻辑，优化方向元件性能，免除众多方向设定。继电器还通过 200 mA 中性点电流互感器 (CT) 选件，支持高阻接地、不接地和消弧线圈接地系统?；箍山?200 mA CT 选件用于无方向的SEF ?；?。</p><p>可选的?；ぬ匦?br />应用带有电压输入和孤光检测选项的SEL-751，可提供同期检测、直流监视以及弧光检测。SEL-751 支持具有 4 路或 8 路弧光保护输入的选件卡?？裳〉湍芎哪Ｄ?(LEA) 电压输入（用于相电压和同步电压的 8 Vrms）支持基座安装式电压传感器和其它紧凑型装置。</p><p>热敏元件<br />使用 IEC 线路/电缆热敏 (49) 元件?；さ缋潞偷缋戮狄苑廊人鸹怠?/p><p>可选矢量偏移<br />在出现大容量发电损失时，通过检测电压角度偏移来检测孤岛效应并防止对本地发电造成损坏。</p><p>可选的高阻抗故障检测<br />应用带有AST功能的SEL-751，可检测众多高阻故障，如断线。对于低故障电流以及常规继电器无法检测的故障进行告警或跳闸。</p><p>可选触摸屏显示<br />触摸显示屏提供了一个单线图模拟显示，用于间隔单元的控制和监控。查看计量数量、相量图、继电器设置、事件摘要、目标状态、顺序事件记录器（SER）数据和更多。广泛的测试表明，坚固的电容式触摸屏显示器符合或超过行业标准以及SEL质量和可靠性要求。</p><p>方便的控制<br />使用前面板三色LED的八个可编程按钮，可作快速及个性化的控制。</p><p>简易的通信<br />从以太网或串行通信和多个协议中选择，其中包括IEC 60870-5-103，镜像位通信和 IEC 61850。从Modbus TCP，串行Modbus，DNP3 LAN / WAN，或DNP3串口等挑选多个会话，为您的应用程序自定义配置。当选择了双以太网端口时，继电器还支持 IEC 62439 并行冗余协议 (PRP) 和快速故障切换。</p><p>IEC 61850 通信协议<br />结合了 IEC 61850 技术、以太网网络的 SEL-751，拥有IEC 61850继电器zui快速的总体性能，用于变电站自动化和控制。利用 acSELerator Architect SEL-5032 软件，精简了启用 IEC 61850 继电器的配置。使用密码验证和会话超时特性提高了安全性。以 COMTRADE 和 CEV 格式传输事件文件以及 CID 文件、设置和报告。</p><p>简单网络时间协议（SNTP）<br />通过已有的以太网络接收时间信号，简化布线和安装。SNTP可作为更精确的IRIG-B时钟同步的后备。5ms精度可作为变电站的基本时钟同步。</p><p>内置的IEEE C37.118同步相量<br />监视配电网络，提前检测可能的电压崩溃。IEEE C37.118同步相量，每秒可达60条报文，允许访问系统量值用作广域监控。IEEE C37.118标准简化了同步相量测量单元之间的通讯和数据配合。</p><p>扩展的SELogic控制方程<br />利用模拟量和数字量的数学与逻辑组合，定制化应用。根据故障前的条件，自适应系统控制。比例化模拟量以及锁存器的暂态输入，用作SCADA检索条件。</p><p>增强重载馈线的安全性<br />带有负荷入侵逻辑，可设定相过电流元件独立于负载水平。</p><p>坚固的设计<br />依据业界宽的环境温度工作范围，-40°至+85°C（-40°C至+185°F）。</p><p>容易的安装<br />利用现有的改装套件及安装适配器，SEL-751轻松地安装到现有的位置，而不需切割或打孔。</p><p>灵活的设计<br />多种安装和集成选项，紧凑的机箱以及推入式扩展插件。</p></td> </tr> </table> </div> </div> </div> </div> <div class="o8eeco0" id="clear"></div> <div class="o8eeco0" id="foot_nav"> <div id="o8eeco0" class="serves"> <dl> <dt>网站栏目</dt> <dd style=" width:74px; float:left;"><a href="/aboutus.html">公司介绍</a></dd> <dd><a href="/products.html">产品中心</a></dd> <dd><a href="/news.html">新闻动态</a></dd> <dd><a href="/article.html">技术支持</a></dd> <dd style=" width:74px; float:left;" ><a href="/order.html">在线留言</a></dd> <dd><a href="/down.html">资料下载</a></dd> </dl> <dl> <dt>产品中心</dt> <dd><a href="/Products-38834497.html">RV3100现货销售德国IFM编码器</a></dd> <dd><a href="/Products-38823031.html">00001392德国BURKERT角座阀现货销售</a></dd> <dd><a href="/Products-38823008.html">PN7070全国包邮销售德国IFM压力传感器</a></dd> <dd><a href="/Products-38820778.html">R900932137包邮销售德国REXROTH力士乐齿轮泵</a></dd> </dl> 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