- 湖北湖开电力工程有限公司
- 18062398093
产品描述
<p><span style="font-family:宋体">南瑞电力</span><span>NR-602G</span><span style="font-family:宋体">微机综合保护装置</span><span></span></p><p><span style="font-family:宋体"><img src="http://l.b2b168.com/2020/05/15/14/202005151427571650874.jpg"><br></span></p><p style="background:white"><span style="font-size:10.5pt;font-family:"color:#333333"></span></p><p style="background:white"><span style="font-size:10.5pt;font-family:"color:#333333">NR-620</span><span style="font-size:10.5pt;font-family:"color:#333333">微机保护测控装置适用于<span>66kv</span>及以下电压等级的小电流接地系统。本产品基于通用型的设计理念，功能配置合理，做为进线、出线、厂用变压器、电动机、电容器的一般保护均可使用。<span></span></span></p><p align="left" style="text-align:left;background:white"><b><span style="font-family:"color:#333333">装置功能配置</span></b><span style="font-family:"color:#333333"></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">电流速断保护；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">**速断保护；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">过电流保护；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">反时限过流保护<span><br> </span>本装置采用<span>IEC60255-4</span>规定中的较端反时限特性方程（<span>extreme IDMT.</span>）：<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">式中：<span>Ip</span>为电流基准值，即过电流定值；<span>I</span>为输入电流（保护电流大值）；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">tp</span><span style="font-family:"color:#333333">为时间常数，取过电流延时定值，范围为<span>0.1~1</span>秒。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">过负荷保护<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">任意一相保护电流测量值大于过负荷电流定值，则定时器启动，经延时后启动相应的出口继电器动作；保护出口可选择告警或跳闸。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">零序过流保护（接地保护）<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">当零序电流测量值大于零序过流定值时，启动定时器，经延时后启动相应的出口继电器动作；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">保护出口可选择告警或跳闸。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">负序过流保护（反相保护）<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">当负序电流测量值大于零序过流定值时，启动定时器，经延时后启动相应的出口继电器动作；<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">过电压、欠电压保护功能<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">可整定为告警信号或跳闸出口。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">零序过电压保护功能<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">可整定为告警信号或跳闸出口。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">母线绝缘监察功能<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">当母线绝缘下降时发出告警信号。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">非电量保护<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">装置有<span>5</span>个非电量输入：温度异常告警、轻瓦斯告警、**温跳闸、重瓦斯跳闸、防护栏打开跳闸。<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">TA</span><span style="font-family:"color:#333333">断线自检<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">TV</span><span style="font-family:"color:#333333">断线自检<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">装置故障自检<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">故障记录功能：具有<span>8</span>组可掉电保持的故障记录<span></span></span></p><p align="left" style="text-align:left;background:white"><span style="font-family:"color:#333333">RS-485</span><span style="font-family:"color:#333333">通讯功能<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><b><span style="font-family:"color:#333333">工作环境条件</span></b><span style="font-family:"color:#333333"></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">环境温度：<span>-10</span>～<span>+55</span>℃<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">相对湿度<span>:</span>不大于<span>95%</span>，无凝露<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">大气压力<span>:80</span>～<span>110kPa</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">其它条件：装置周围的空气中不应含有带酸、碱腐蚀或爆炸性的物质，且具有防雷、雨、雪设施<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">试验的标准大气条件<span>:</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">环境温度<span>: +15</span>～<span>+35</span>℃<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">相对湿度<span>:45%</span>～<span>75%</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">大气压力<span>:86</span>～<span>106kPa</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">储藏及运输：<span>-25</span>～<span>+70</span>℃<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333"> </span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><b><span style="font-family:"color:#333333">额定电气参数</span></b><span style="font-family:"color:#333333"></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">工作电源：<span>AC/DC 220V</span>，允许偏差<span>-20%</span>，<span>+15%</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">额定电流：<span>5A</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">频 率：<span>50Hz</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><b><span style="font-family:"color:#333333">主要技术指标</span></b><span style="font-family:"color:#333333"></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">整定范围及误差：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">电流保护整定范围：<span>0.5~50A</span>，误差不**过±<span>3%</span>或<span>0.05A </span>整定步长：<span>0.01A</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">零序电流整定范围：<span>0.1~5A</span>，误差不**过±<span>3%</span>或<span>0.02A </span>整定步长：<span>0.01A</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">电压整定范围：<span>5~150V</span>，误差不**过±<span>3% </span>整定步长：<span>0.01V</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">时间整定范围：<span>0.1~99.99s</span>，误差不**过±<span>1%</span>或<span>35ms </span>整定步长：<span>0.01s</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">过流反时**间常数整定范围：<span>0.1-1S</span>，误差不**过±<span>3%</span>或<span>100ms</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">电流速断出口动作时间：≤<span>35ms (1.5</span>倍动作电流<span>)</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">非电量保护出口动作时间：≤<span>35ms</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">装置功耗：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">交流电流回路：不大于<span>1VA/</span>相<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">交流电压回路：不大于<span>1VA/</span>相<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">直流电压回路：正常工作时，不大于<span>10W</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">保护动作时，不大于<span>15W</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">过载能力：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">电流回路：<span>2</span>倍额定电流可长期工作<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">10</span><span style="font-family:"color:#333333">倍额定电流允许<span>10S</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">20</span><span style="font-family:"color:#333333">倍额定电流允许<span>1S</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">电压回路：<span>1.2</span>倍额定电压可长期工作<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">1.5</span><span style="font-family:"color:#333333">倍额定电压允许<span>10S</span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">触点容量：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">在直流感性负荷回路中<span>(C/R=7ms),</span>电压不**过<span>250VDC</span>，且电流不**过<span>2.5A</span>，触头断开容量为<span>50W</span>；<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">在交流回路<span>(COS</span>Φ<span>=0.4</span>，电压不**过<span>250VAC</span>，且电流不**过<span>4A)</span>中，触头断开容量为<span>600VA</span>；<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">在阻性负荷回路中<span>(</span>交直流电压不**过<span>250V</span>，电流不**过<span>10A)</span>中，触点大断开容量<span>1500VA/400W</span>。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">触点允许长期接通不**过<span>5A</span>电流。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">绝缘电阻：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">用开路电压为<span>500V</span>的兆欧表测量其绝缘电阻，装置的各带电端子连在一起，对外露的非带电金属部件或外壳之间大于<span>100M</span>Ω。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">介质强度：<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">产品的开关量采集电路（<span>C01-09</span>）对地（即外壳或外露的非带电金属零件）能承受<span>500V</span>（有效值）、<span>50Hz</span>的交流试验电压，历时<span>1min</span>，而无击穿或闪络现象。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">其余各带电端子连在一起，对外露的非带电金属部分或外壳之间，以及装置中无电气联系的各导电电路之间，应能承受交流有效值<span>2000V/50Hz</span>的试验电压，历时<span>1min</span>无绝缘击穿闪络现象。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">当复查介质强度时，试验电压值应为规定值的<span>75%</span>。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">冲击电压<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">产品的各带电的导电电路对地（即外壳或外露的非带电金属零件）之间，以及产品中电气上无联系的各带电的导电电路之间，能承受冲击电压波形为标准雷电波，峰值为<span>1kV</span>（额定绝缘电压≤<span>63V</span>）或<span>5kV</span>（额定绝缘电压＞<span>63V</span>）的试验电压，此后无绝缘损坏。检验过程中，允许出现不导致绝缘损坏的闪络现象。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">如果出现闪络，则应复查介质强度，此时介质强度试验电压值为规定值的<span>75%</span>。<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">其它抗干扰性能<span></span></span></p><p align="left" style="text-align:left;text-indent:-18.0pt;background:white"><span style="font-size:10.0pt;font-family:symbol;color:#333333"><span>·<span> </span></span></span><span style="font-family:"color:#333333">符合国家标准、行业标准相关规定<span></span></span></p>
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