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<p><p>干式变压器的正常工作条件是过载、外部短路引起的过流、外部接地短路引起的中性点过电压、油箱泄漏引起的油位下降或冷却系统故障引起的温升。此外，大容量干式变压器由于其额定工作磁通密度高，与电压频率比成正比，在过电压或低频运行时，可能导致干式变压器过励磁故障。鉴于上述情况，大型干式变压器一般采用以下?；し绞剑?/p><p><img src="/static/upload/image/20231031/1698741275657760.jpg" alt="IMG_1113.jpg"/></p><p>一、气体?；ぃ罕；じ墒奖溲蛊髂诓慷搪泛陀臀唤档?。</p><p>二、差动?；ぁ⒌缌魉俣媳；ぃ罕；じ墒奖溲蛊魅谱榛虺鱿叩南嗉涠搪?、大接地电流系统的接地短路和绕组匝间短路。</p><p>三.过流?；ぃ罕；ね獠肯嗉涠搪罚魑灞；ず筒疃；?或电流速断?；?的后备?；ぁ?/p><p>四.零序电流?；ぃ罕；ご蠼拥氐缌飨低惩獠康ハ嘟拥囟搪?。</p><p>五.过载?；ぃ憾猿乒乇；ぶ蛔饔糜谛藕?。</p><p><br/></p><p><br/></p></p> <div class="1zlx7hpjjv5" id="prevnext"> <span>上一篇：<a href="/cpzs/8940.html">变压器的电流计算方法</a> </span>????? <span>下一篇：<a href="/cpzs/8942.html">干式变压器外壳的作用</a></span> </div> </div> </div>   <div id="1zlx7hpjjv5" class="sub_right"> <div id="1zlx7hpjjv5" class="listcon"> <h3>热点关注</h3> <ul> <li><a href='/cpzs/9552.html' title='PK 系列微机?；げ饪仄粒旱缌ο低车?“精准?；?+ 智能测控” 特种柜'>PK 系列微机保护测控屏：电力系统的 “精准?；?+ 智能测控” 特种柜</a></li> <li><a href='/cpzs/9551.html' title='GCS 低压抽出式开关柜：低压配电的 “高适配” 灵活方案'>GCS 低压抽出式开关柜：低压配电的 “高适配” 灵活方案</a></li> 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