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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>貴州電子變壓器檢測公司</p><p><span>***更新：</span>2020-06-28 19:26:20</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="800gemm" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市展榮新精密電子有限公司</a></p><p><span>聯(lián)系人：</span>喻孟峨</p><p><span>郵箱: </span>113527410@qq.com</p><p><span>電話: </span>15012892536</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0755-27923475</p><p><span>地址: </span>航城街道黃田社區(qū)崗貝工業(yè)區(qū)綜合樓10棟401</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="oeucaou" class="page-proshow02"><p class="title">詳細說明</p><div id="ukiqm8y" class="box"><p><p style="text-indent:25px">過去在進行電纜耐壓試驗時都采用直流耐壓試驗。在1980年左右，國外電力部門發(fā)現(xiàn)直流耐壓試驗對橡塑絕緣是無效的且具有危害性。我國在九十年代開始研究和實踐交流耐壓試驗技術。經(jīng)過20多年的研究和實踐，世界各國紛紛采用交流耐壓試驗代替直流耐壓試驗。國內(nèi)外有關標準機構(gòu)也對于高壓電纜的試驗方法作出了更改和修訂。1997年CIGRI國際大電網(wǎng)工作會議對目前采用的直流耐壓試驗方法提出疑議，并推薦使用工頻及近似工頻（30-300HZ）的交流試驗方法，貴州電子變壓器檢測公司，在全世界范圍內(nèi)推廣應用。我國很多省份電網(wǎng)已先后頒發(fā)《試驗規(guī)程》，強制規(guī)定用交流耐壓試驗代替直流耐壓試驗，貴州電子變壓器檢測公司。在我國電網(wǎng)相對發(fā)達的省份，貴州電子變壓器檢測公司，交流耐壓試驗已經(jīng)成為強制性標準。其它地區(qū)的試驗規(guī)程也在起草和醞釀中。交流耐壓試驗取代傳統(tǒng)直流耐壓試驗已是大勢所趨。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州電子變壓器檢測公司" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368129267578/9378652.png"></div><p style="text-indent:25px">工作溫度變化時應監(jiān)視變壓器。如果變壓器線圈導線為A級絕緣，則其絕緣主要是紙和棉紗，溫度對絕緣和使用壽命有很大影響，溫度每升高8℃，絕緣壽命將減少約50％。變壓器在常溫（90℃）下工作，使用壽命約20年。如果溫度升至105℃，則使用壽命為7年。如果溫度升至120℃，壽命將只有兩年。因此，當變壓器運行時，必須保持良好的通風和冷卻。必要時可采用強制通風以減少變壓器的溫升。對于儀器相關的內(nèi)容想要了解更多的話可以登錄深圳市展榮新精密電子有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貴州電子變壓器檢測公司" src="https://tyunfile.71360.com/UploadFile/ZRX888/637284368098925781/9464422.png"></div><p style="text-indent:25px">在用電高峰期，加強每個配電變壓器的負荷測量，必要時增加測量次數(shù)，及時調(diào)整三相電流不平衡的配電變壓器，以防止中性線電流過度燒毀引線，造成損壞。用戶的設備和配電變壓器。連接組為Yyn0，不僅要使用一相或兩相電源，而且三相負載應盡可能平衡，中性線電流不應超過低壓側(cè)額定電流的25％，試圖使配電變壓器不過載，不偏向負載運行。定期檢查并更換一兩個保險絲。嚴禁使用鋁線更換保險絲。眾所周知，一次熔斷器保護系統(tǒng)，二次熔斷器保護變壓器。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/427209.html</p></div></div></div></div></div><div id="gom0sgk" class="page-right twoColRt"><div id="gu8ioua" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="owagw02" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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