伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S 杭州浩蘊杭州浩蘊自動化科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="塑殼式斷路器如何選型（九）3)分勵脫扣器是一種遠距離操縱分閘的附件，它的電壓可與主電路電壓無關(guān)，分勵脫扣器是短時工作制，線圈通電時間一般不能超過1s，否則線圈會燒毀。塑殼斷路器為防止線圈燒毀，在分勵脫扣器線圈串聯(lián)一個微動開關(guān)，伊頓穆勒ETA"><meta name="keywords" content="伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S,塑殼斷路器"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S,塑殼斷路器</p><p><span>***更新：</span>2021-01-07 07:07:29</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="iczbdpr" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">杭州浩蘊自動化科技有限公司</a></p><p><span>聯(lián)系人：</span>謝凱浩</p><p><span>郵箱: </span>1017004522@qq.com</p><p><span>電話: </span>13817446397</p><p><span>傳真: </span>0571_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0571-85385963</p><p><span>地址: </span>經(jīng)濟技術(shù)開發(fā)區(qū)18號大街795號1幢11層1109室</p><p>[當(dāng)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="2kw723u" class="page-proshow02"><p class="title">詳細說明</p><div id="sczfhjg" class="box"><p><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <strong>塑殼式斷路器</strong>如何選型（九） </p> <p> 3)分勵脫扣器是一種遠距離操縱分閘的附件，它的電壓可與主電路電壓無關(guān)，分勵脫扣器是短時工作制，線圈通電時間一般不能超過1s，否則線圈會燒毀。塑殼斷路器為防止線圈燒毀，在分勵脫扣器線圈串聯(lián)一個微動開關(guān)，伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S，當(dāng)分勵脫扣器通電，伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S，銜鐵吸合，微動開關(guān)從常閉狀態(tài)轉(zhuǎn)換成常開，由于分勵脫扣器電源的控制線路被切斷，即使人為地按住按鈕，分勵線圈始終不再通電。避免了線圈燒損情況的產(chǎn)生，伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S，當(dāng)斷路器再扣合閘后微動開關(guān)重新處于常閉位置。分勵脫扣器有多種控制電壓和不同電源頻率，可供不同場合，不同電源選用。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 油斷路器的概念是怎樣的？伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S,塑殼斷路器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637360477293173828/6367049.jpg"></div><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <strong>塑殼式斷路器</strong>如何選型（十一） </p> <p> 斷路器在分斷大的短路電流時，其動、靜觸頭分開時產(chǎn)生電弧，有一部分電弧或電離氣體從斷路器電源端噴弧口噴出，電弧本身就是一種巨大的電流，很容易導(dǎo)致裸露的導(dǎo)電體之間和裸露帶電體與"地"(成套設(shè)備的金屬外殼是接地的)的相間短路和接地短路事故。為確保安全，用戶應(yīng)根據(jù)制造廠的產(chǎn)品樣本或使用說明書提供的數(shù)據(jù)留一定距離。如配電箱、柜的高度距離不夠，可選用飛弧距離小或零飛弧的產(chǎn)品，以保證用電安全。 </p> <p> <br /> </p> <p> <br /> 伊頓穆勒 NZM塑殼斷路器NZMB1-S63-E斷路器的分類、選型和保護整定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S,塑殼斷路器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637360477295000000/1123941.jpg"></div><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 空氣斷路器的工作原理 </p> <p> 脫扣方式有熱動、電磁和復(fù)式脫扣3種。 </p> <p> 當(dāng)線路發(fā)生一般性過載時，過載電流雖不能使電磁脫扣器動作，但能使熱元件產(chǎn)生一定熱量，促使雙金屬片受熱向上彎曲，推動杠桿使搭鉤與鎖扣脫開，將主觸頭分斷，切斷電源。當(dāng)線路發(fā)生短路或嚴重過載電流時，短路電流超過瞬時脫扣整定電流值，電磁脫扣器產(chǎn)生足夠大的吸力，將銜鐵吸合并撞擊杠桿，使搭鉤繞轉(zhuǎn)軸座向上轉(zhuǎn)動與鎖扣脫開，鎖扣在反力彈簧的作用下將三副主觸頭分斷，切斷電源。 </p> <p> 開關(guān)的脫扣機構(gòu)是一套連桿裝置。當(dāng)主觸點通過操作機構(gòu)閉合后，就被鎖鉤鎖在合閘的位置。如果電路中發(fā)生故障，則有關(guān)的脫扣器將產(chǎn)生作用使脫扣機構(gòu)中的鎖鉤脫開，于是主觸點在釋放彈簧的作用下迅速分斷。按照保護作用的不同，脫扣器可以分為過電流脫扣器及失壓脫扣器等類型。 </p> <p> <br /> </p> <p> <br /> </p><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <strong>塑殼斷路器</strong>各種分斷能力關(guān)系（三） </p> <p> 斷路器的極限短路分斷能力、運行短路分斷能力和短時耐受電流 </p> <p> 一些大的系統(tǒng)的短路電流往往會很大，現(xiàn)在很多斷路器的Icu都可達100KA以上。 </p> <p> 額定極限短路分斷能力(Icu)，是指在一定的試驗參數(shù)(電壓、短路電流、功率因數(shù))條件下，經(jīng)一定的試驗程序，能夠接通、分斷的短路電流，經(jīng)此通斷后，不再繼續(xù)承載其額定電流的分斷能力。它的試驗程序為0—t(線上)CO(“O”為分斷，t為間歇時間，一般為3min，“CO”表示接通后立即分斷)。試檢后要驗證脫扣特性和工頻耐壓。 </p> <p> <br /> </p> <p> <br /> 塑殼斷路器MCCB介紹及設(shè)計選型。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S,塑殼斷路器" src="https://tyunfile.71360.com/UploadFile/hzhy00290/637360477292841797/5154144.jpg"></div><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <strong>塑殼斷路器</strong>各種分斷能力關(guān)系（五） </p> <p> 運行短路分斷能力的試驗條件極為苛刻(一次分斷、二次通斷)，由于試后它還要繼續(xù)承載額定電流(其次數(shù)為壽命數(shù)的5%)，因此它不單要驗證脫扣特性、工頻耐壓，還要驗證溫升。IEC947_2(以及1997新版IEC60947_2)和我國國家標準GB140482規(guī)定，Ics可以是極限短路分斷能力Icu數(shù)值的25%、50%、75%和**(B類斷路器為50%、75%和**，B類無25%是鑒于它多數(shù)是用于主干線保護之故)。 </p> <p> 上文提到的選擇斷路器的一個重要原則是斷路器的短路分斷能力≥線路的預(yù)期短路電流，這個斷路器的短路分斷能力通常是指它的極限短路分斷能力。 </p> <p> <br /> </p> <p> <br /> 斷路器中抽屜式接線方式的介紹。伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S</p><p style="text-indent:25px">塑殼斷路器的基本介紹。伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S</p><p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> <strong>塑殼式斷路器</strong>如何選型（七） </p> <p> 為了滿足不同用戶需要，現(xiàn)在國內(nèi)許多斷路器生產(chǎn)廠家，對于同一殼架等級額定電流的短路分斷能力分為不同級別，例如常熟開關(guān)廠CM1-100分為C基本型(25～35kA)、L標準型(35～50kA)、M較**斷型(50～75kA)、H**斷型(85～100kA)。用戶在選用時，要符合斷路器的極限短路分斷能力，線路預(yù)期短路電流就能滿足要求，不必人為地加上保險系數(shù)，以免造成浪費。 </p> <p> 額定運行短路分斷能力的值可為額定極限短路分斷能力的25％、50％、75％、100％，大多數(shù)斷路器是50％～75％，極個別的有100％(Ics＝Icu)，如法國施耐德的梅蘭日蘭公司的NS產(chǎn)品。 </p> <p> <br /> </p> <p> <br /> 伊頓穆勒 ETAON 塑殼斷路器NZMN3-A320-S</p></p><br /><p>文章來源地址: 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