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href="news_160.html">行業知識</a> ? <a>挖泥船發電機的外部短路保護是怎樣的?</a> </div> </div></div> <div style="clear:both"></div> </div></div><div id="mfid7" class="mf" style="margin: 15px; width: 96.8586%;"><div id="_ctl5_box" class="box166_1"> <div class="title"> <h2 class="title1" style="font-size: 20px; color: #333; margin-bottom: 10px; font-weight: normal;">挖泥船發電機的外部短路保護是怎樣的?</h2> <p> <span class="fromF">來源：</span> <span class="timeM">時間：2019-01-03 11:05:17</span> <span class="timeM">瀏覽次數：<label id="_ctl5_ClickRead" class="ClickRead"></label></span> </p> </div> <div class="contMain"> <div class="content"> <div id="_ctl5_nsContentDiv" class="nscontent"><p> 挖泥船低壓發電機的電壓大多在50OV以下，且有定期的絕緣檢查和日常維護，再加上挖泥船發電機內部短路的概率相當小，因此一般不考慮裝設專門的發電機內部保護裝置。 </p> <p> <br /> </p> <p> 挖泥船發電機的外部短路保護是怎樣的? </p> <p> <br /> </p> <p> 挖泥船發電機的外部短路將產生巨大的短路電流，對挖泥船電力系統設備有巨大的破壞作用，將造成電網電壓急劇下降，并使挖泥船電動機停轉，甚至使發電機跳閘引起全船失電。 </p> <p> <br /> </p> <p> 挖泥船發電機的外部短路保護原則是既要保護發電機，又要盡可能不中斷供電。為兼顧保護的快速性和選擇性，通常采用時間原則和電流原則相結合的方法。 </p> <p> <br /> </p> <p> 對于挖泥船發電機的外部短路保護，一般應設有短路短延時保護短路瞬時動作保護。短路短延時保護的啟動電流整定為3～5倍的發電機額定電流，動作時限整定為0.2～0.6s，作用于發電機跳閘;短路瞬時動作保護的啟動電流整定為5～10倍的發電機額定電流，作用于發電機跳閘。 </p> <p> <br /> </p> <p> 因此，挖泥船的發電機的外部短路保護裝置中，一般設有兩套電流保護裝置，它們根據短路電流的大小實行短延時或瞬時動作保護。 </p> <p> 關于挖泥船發電機的外部短路保護是怎樣的相關講解就先簡單的為您介紹到這里，希望通過以上內容的介紹，能對您有所幫助。 </p> <p> <br /> </p> <p> 青州市巨龍環?？萍加邢薰臼且患覍Ｗ⒂谘邪l、設計、生產、銷售異型水上工程船舶及工作平臺，是疏浚設備、水域環保設備、采選礦設備和沙石處理設備的專業制造商，是中小型水上工程設備及礦沙處理設備的可靠服務商。 </p> <p> <br /> </p> <p> 作為一個生產商，巨龍環?？萍脊驹谙M者進行選擇設備的時候，根據消費者的具體需求設計獨特的工藝流程，拒絕“豆腐渣工程”，以確保每個消費者都能順利正常的進行生產。如果您還想進一步了解，可以咨詢廠家熱線：0536-3837236/3836888 </p></div> <div id="nsKey" class="key" >關鍵字：<a href="search.html?sear_key=" target="_blank"></a> </div> <div id="nsKey1" class="key" >本文網址：<a href="http://www.cosanvuongiare.com/news_view_209_160.html">http://www.cosanvuongiare.com/news_view_209_160.html</a></div> <div id="_ctl5_isHidePage" class="change"> <p>上一篇：<a href="news_view_208_160.html">挖泥船的抽沙泵應該如何維護?</a></p> <p>下一篇：<a href="news_view_210_160.html">小型水庫清淤使用什么類型的挖泥船好?</a></p> 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