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style="font-size: 14px;">继电?；げ馐砸堑摹肮鞅；?调试浅析</span></strong><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">继电?；げ馐砸堑墓鞅；さ魇愿菟；さ亩韵蟛煌?，现场常采用一段、二段或三段过流?；?，我们以三段式过流?；の蚴鱿殖〉魇灾杏Π盐漳男┮?？</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　1.如果保护不具方向性，则只需给?；ぜ尤牍收系缌?，继电?；げ馐砸侨绻蟹较蛐裕缪乖匆灿尤氡；ぁ５慊鹘缑嫔稀岸搪芳扑?按钮进行相应短路计算，并注意选择故障的方向。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　2.单独给?；な淙牍收系缌魇保羧嗤笔淙?，请将测试仪IA、IB、IC三相电流设为正序相位，即0o、-120o、120o。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　3.采用自动试验方式搜索?；ざㄖ凳?，若拟动作的那段?；さ恼ǘ魇奔湮猼ms，则应将（t+200）ms及以上的数值填入界面中的“间隔时间"框内，以保证测试值的准确性。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　4.一般采用“全自动"或“半自动"方式，通过“递增"或“递减"变量来测试?；さ亩髦?，而采用“手动"方式测试?；さ亩魇奔?。</p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img74.chem17.com/9/20220316/637830177174803440619.png" title=")7)BV`XX25D43W$~NB816%M.png" alt=")7)BV`XX25D43W$~NB816%M.png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　5.由于无论是继电器还是微机保护，在临界动作附近，继电?；げ馐砸瞧涔收狭坑攵魇奔渥苁谴嬖谝欢ǖ摹胺词奔涮匦?，即故障量越大（距离?；な窃叫。?，?；さ亩魇奔渚驮叫　Ｎ耸苟魇奔洳馐缘酶既?，在手动方式下，由继电?；げ馐砸鞘涑龅墓收狭浚ǖ缪?、电流幅值）应为整定值的1.2倍以上。若是距离保护，测试仪输出的故障阻抗应为整定值的0.8倍以下。这样，?；げ拍芸煽慷?，并且动作时间趋于稳定，更接近?；ふǖ亩魇奔洹?/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　6.对三段过流?；?，应先校验动作电流较小的III段动作值，在校验II段时，应退出III段过流保护，在校验I段时，应退出II段和III段过流?；?，以防止其它段误动作而干扰试验。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　7.有时I段，也即速断?；さ恼ǘ鞯缌骱艽螅隽瞬馐砸堑ハ嗍涑龅拇蟮缌髦担耸笨山馐砸堑牧较嗷蛉嗟缌鞑⒘涑?。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　8.被并联的两相或三相电流的相位应设置为相同，这样实际输出的电流大小即为它们的幅值之和。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　9.为方便记录数据，只需选择其中的一相电流作为变量，以增减并联输出的电流大小使保护动作。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: "Microsoft YaHei"; background-color: rgb(255, 255, 255);">　　10.流回测试仪IN的电流往往较大，试验时请尽量采用较粗导线，或将两根导线并接当一根使用，并且，大电流输出的时间应尽可能短，以保证设备安全。</p></div> <div id="2ogipkiq8sut" class="inside_newsthree"> <p id="newsprev">上一篇：<b class="newsprev"><a href="/Article-2956776.html">三相多功能用电检查综合测试仪用途技术</a></b></p> <p id="newsnext">下一篇：<b class="newsnext"><a href="/Article-2951324.html">如何选择继电?；げ馐砸?？</a></b></p> <span><a href="/article.html">返回列表>></a></span> </div> </div> </div> </div> </div>    <div class="2ogipkiq8sut" id="z_Footer"> <div id="2ogipkiq8sut" class="pz_down"> <div id="2ogipkiq8sut" class="w_1200"> <div id="2ogipkiq8sut" class="footT"> <div id="2ogipkiq8sut" class="footAddr"> <div id="2ogipkiq8sut" class="footTit">上?？档堑缙萍加邢薰?/div> <div id="2ogipkiq8sut" class="dAddr"><img class="ico" src="/Skins/329197/images/icon_foot1.png">地址：上海市普陀区金通路1118弄6号</div> <div id="2ogipkiq8sut" class="dAddr"><img class="ico" src="/Skins/329197/images/icon_foot2.png">电话：021-51097529 </div> <div 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