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href="/SonList-2479705.html" class="eja">隔离开关触头压力测试仪</a></li> </ul> </div> </li> </ul> </div> </div></div> <div id="0o4f7vl" class="inpage_right"> <div id="0o4f7vl" class="mbx2"><a href="/">首页</a> > <a href="/article.html">技术文章</a> > 2025-07-05</div> <div id="0o4f7vl" class="inpage_content"> <div id="0o4f7vl" class="nr_main_box"> <h1 class="inside_rnewtil">测量液体绝缘电阻率的方法</h1> <div id="0o4f7vl" class="inside_rnewtime">点击次数：367 更新更新时间：2025-07-05</div> <div id="0o4f7vl" class="inside_rnewcon"><p><strong>测量液体绝缘电阻率的方法</strong></p><p>测量液体绝缘电阻率是评估绝缘油、变压器油等液体介质绝缘性能的关键指标，主要依据?欧姆定律?（电阻率 ρ = 电阻 R × 横截面积 A / 长度 L），通过专业仪器实现。以下是具体方法及操作要点：</p><p>?一、测量原理与仪器?</p><p>?核心仪器?</p><p>?电阻率测定仪?（或专用绝缘油测试仪）是主要设备，其核心为?三电极系统?：</p><p>?测量电极?：施加测试电压，接触液体样品。</p><p>??；さ缂?：消除边缘漏电流干扰，确保测量精准?。</p><p>?接地电极?：形成闭合回路，与仪器接地端连接。</p><p>?温度传感器?：实时监测样品温度，因电阻率对温度敏感（温度每升10℃，电阻率可能下降约50%）?。</p><p>?工作原理?</p><p>仪器对电极间施加直流高压（通常500V–1000V），测量通过液体的?漏电流?，结合电极几何参数自动计算电阻率（单位：Ω·m）?。</p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 537px; height: 402px;" src="https://img53.chem17.com/9/20250705/638872941329135125158.jpg" title="90F.jpg" alt="90F.jpg" width="537" height="402"/></p><p> </p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 558px; height: 336px;" src="https://img47.chem17.com/9/20250705/638872941551944352987.jpg" title="94EC81F7E981DA3E9E4F5B65EC204891.jpg" alt="94EC81F7E981DA3E9E4F5B65EC204891.jpg" width="558" height="336"/></p><p>?二、标准操作步骤? ?12</p><p>?样品预处理?</p><p>用待测液体冲洗电阻池（电极腔）3次，清除残留杂质。</p><p>注入液体确保无气泡，避免测量失真。</p><p>擦拭电极表面及接触孔，保持干燥清洁。</p><p>?仪器连接与设置?</p><p>将电阻池插入主机电极轴，温度探头插入测温孔。</p><p>开机后设置目标温度（可选1–50℃范围），仪器自动补偿温漂影响。</p><p>?执行测量?</p><p>启动测试，仪器自动施加电压并记录数据。</p><p>稳定后读取屏幕显示的电阻率数值（如显示“5.0×1012 Ω·m"）。</p><p>?结束与维护?</p><p>关闭电源，拆卸电阻池并清洗。</p><p>存放于干燥环境，避免电极氧化。</p><p>三、关键注意事项?</p><p>?环境控制?</p><p>?湿度?：需低于75%，湿度升高会导致表面漏电，电阻率虚低?。</p><p>?温度?：必须在稳定状态下测量，高温环境需启用仪器温度补偿功能?。</p><p>?干扰排除?</p><p>?气泡与杂质?：液体中的气泡或颗?；嵝纬傻嫉缤ǖ?，需清除?。</p><p>?电极清洁?：氧化层或污渍会增大接触电阻，定期用无水乙醇擦拭电极?。</p><p>?结果解读?</p><p>?合格标准?：电力用绝缘油电阻率通常要求 >1×1012 Ω·m（新油），若低于1×101? Ω·m表明绝缘性能严重下降?。</p><p>?对比测试?：建议多次测量取平均值，避免偶然误差?</p><p><br/></p></div> <div id="0o4f7vl" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-4079201.html">绝缘电阻测试仪的使用方法</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-4073945.html">钳形接地电阻测试仪的核心功能与原理</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="0o4f7vl" id="z_Footer"> <div id="0o4f7vl" class="pz_down"> <div id="0o4f7vl" class="w_1200"> <div id="0o4f7vl" class="footT"> <div id="0o4f7vl" class="footAddr"> <div id="0o4f7vl" class="footTit">上海康登电气科技有限公司</div> <div id="0o4f7vl" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot1.png">地址：上海市普陀区金通路1118弄6号</div> <div id="0o4f7vl" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot2.png">电话：86-021-51097529</div> <div id="0o4f7vl" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot3.png">邮箱：3502948309@qq.com</div> <div id="0o4f7vl" class="dAddr"><img class="ico" src="/Skins/341989/images/icon_foot4.png">传真：86-021-51714615</div> </div> <div id="0o4f7vl" class="footNav"> <div id="0o4f7vl" class="footTit">快速链接</div> <div id="0o4f7vl" class="dNav"> <ul> <li><a href="/">首页</a></li> <li><a href="/aboutus.html">关于我们</a></li> <li><a href="/products.html">产品展示</a></li> <li><a href="/news.html">新闻中心</a></li> <li><a href="/article.html">技术文章</a></li>  <li><a href="/order.html">在线留言</a></li> <li><a href="/contact.html">联系我们</a></li> </ul> </div> </div> <div id="0o4f7vl" class="footUs"> <div id="0o4f7vl" class="footTit">关注我们</div> <div id="0o4f7vl" class="ewm1">欢迎您关注我们的微信公众号了解更多信息：</div> <div id="0o4f7vl" class="ewm2"> <div id="0o4f7vl" class="img"><img src="/Skins/341989/images/2wm.jpg" width="100%" alt=""></div> <div id="0o4f7vl" class="info">扫一扫<br>关注我们</div> </div> </div> </div> </div> <div id="0o4f7vl" class="w_1200"> <div id="0o4f7vl" class="footD"> <div id="0o4f7vl" class="Copyright">版权所有 © 2025 上?？档堑缙萍加邢薰? 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