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src="https://tyunfile.71360.com/UploadFile/keaton/637255090210488281/9985773.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="sr893lx" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/keaton/637255090210488281/9985773.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8jq3spb" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>數(shù)字化弧光保護(hù)排名,弧光保護(hù)</p><p><span>***更新：</span>2021-01-23 17:16:19</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8gs7iph" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江蘇基頓電氣自動化有限公司</a></p><p><span>聯(lián)系人：</span>高經(jīng)理</p><p><span>郵箱: </span>215741001@qq.com</p><p><span>電話: </span>13328157222</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0510-85027009</p><p><span>地址: </span>長安鎮(zhèn)友誼路28號</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="3acjqsz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vjg3hel" class="box"><p><p> 可以有效防止開關(guān)相間在此位置閃絡(luò)、爬電和飛弧短路。3-3電路問題大廈安裝的低壓無功補(bǔ)償電容器柜，是由國內(nèi)某建筑設(shè)計(jì)院設(shè)計(jì)，由國內(nèi)某儀表廠組裝生產(chǎn)。這種設(shè)備自正式投入運(yùn)行以來，接連發(fā)生電容器組投切接觸器燒毀、分路熔斷器熔斷和串聯(lián)電抗器過熱等異常現(xiàn)象。深入分析表明：這種設(shè)備在設(shè)計(jì)上存在缺陷。這種缺陷成為“”弧光短路事故的主要誘發(fā)因素。一、因設(shè)計(jì)潛伏隱患（一）REGO型自動功率因數(shù)控制器接線方式圖11REGO控制系統(tǒng)圖圖12REGO控制原理圖1．REGO自動控制器不受總電源開關(guān)控制。主輔柜兩個SIWOH1-630開關(guān)控制12組電容器總主回路，REGO自動控制器通過控制12個交流接觸器控制12組電容器分支回路。REGO的工作電源接在SIWOH1-630開關(guān)上口，不受總開關(guān)控制。當(dāng)總開關(guān)斷開后，REGO仍在工作。原設(shè)計(jì)思想是：當(dāng)主輔柜其中一個斷電檢修時，另一個仍然可以在自動補(bǔ)償狀態(tài)工作。2．這種接線方式可以造成智能誤判，使電路出現(xiàn)異常狀態(tài)。即：在總開關(guān)斷開而REGO仍在工作的情況下，造成REGO對補(bǔ)償需求發(fā)生誤判。REGO對補(bǔ)償需求發(fā)生誤判后，立即發(fā)出過補(bǔ)償投入指令，數(shù)字化弧光保護(hù)排名，數(shù)字化弧光保護(hù)排名。誤判發(fā)出的過補(bǔ)償投入指令會一直持續(xù)到將12組600Kvar電容器投切接觸器全部吸合為止，數(shù)字化弧光保護(hù)排名。弧光保護(hù)裝置，弧光保護(hù)傳感器專業(yè)生產(chǎn)，歡迎來電咨詢。數(shù)字化弧光保護(hù)排名</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="數(shù)字化弧光保護(hù)排名,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210488281/9985773.jpg"></div><p> 8倍的額定電流）。基于本開關(guān)的類別和性質(zhì)，“”事故時電工的操作，沒有違反電氣安全工作的基本規(guī)程，沒有違反電工安全作業(yè)的基本常識，是一次正常的操作。二、正常操作與危險狀態(tài)違章操作必然與危險狀態(tài)相聯(lián)系，但正常操作卻并不必然與安全狀態(tài)相聯(lián)系。一次正常的操作可能引發(fā)多種危險的狀態(tài)。這就是電氣行業(yè)工作的特殊性。對于電路分、合操作尤其是這樣。特別是無功補(bǔ)償電容器裝置，每次操作時，回路中各個電器元件的工況都是有差別的，電路中電壓、電流的相位波形都是不相同的，過電壓或過電流可能因各種因素誘導(dǎo)隨機(jī)產(chǎn)生。例如常見的操作過電壓就有：合閘瞬間電源電壓相位角大過電壓；合閘時觸頭彈跳過電壓；分閘時電弧重?fù)舸┻^電壓；合閘時高次諧振過電壓；合閘時殘留電荷過電壓；合閘時過量補(bǔ)償過電壓等。3-2開關(guān)問題一、故障問題（一）瞬間電流在“”弧光短路的一瞬間，SIWOH1-630開關(guān)動靜觸頭接通的電流究竟有多大呢？根據(jù)當(dāng)時開關(guān)負(fù)荷側(cè)3個gG630A熔斷器（總保險）和12個gG160A熔斷器（分保險）一個都沒有熔斷的事實(shí)，可以判定：當(dāng)時開關(guān)在ms級時限內(nèi)接通的電流在630A以內(nèi)。這個數(shù)值遠(yuǎn)遠(yuǎn)低于開關(guān)的通斷能力。在正常條件下是不應(yīng)該產(chǎn)生電弧的。因此。昆明弧光保護(hù)廠家直銷中低壓弧光保護(hù)，專業(yè)提供，歡迎來電咨詢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="數(shù)字化弧光保護(hù)排名,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090210449219/7963429.jpg"></div><p> 2.系統(tǒng)的構(gòu)成 </p> <p> 系統(tǒng)主要由主控單元、電流單元、弧光單元、弧光傳感器、電源模塊、及連接各部件之間的光纖和數(shù)據(jù)線組成。 </p> <p> (1)主控單元用于管理、控制整套電弧光保護(hù)系統(tǒng)。它檢測故障電流和弧光信號，并對收到的兩種信號進(jìn)行處理、判斷，在滿足跳閘的條件時，發(fā)出跳閘指令切除故障。 </p> <p> 主控單元有4個數(shù)據(jù)輸入接口，共可接入24個弧光單元或電流單元；輸出接口包括4路快速跳閘輸出和6路常規(guī)繼電器跳閘輸出共有4+16個弧光檢測口。當(dāng)弧光信號輸入超過16個時。推薦采用弧光單元。主控單元根據(jù)弧光單元或者弧光傳感器輸送的信號，能準(zhǔn)確地判斷故障點(diǎn)位置。 </p> <p> (2)電流單元用于檢測過電流信號，ABC三相電流均可檢測，電流單元檢測到的信號通過光纖和數(shù)據(jù)線傳到主控單元，主控單元依據(jù)設(shè)定的邏輯判斷是否發(fā)出跳閘指令。 </p> <p> (3)每個弧光單元包含10個弧光檢測接口，這些接口均為光纖接口，用于連接弧光傳感器。弧光傳感器的感光強(qiáng)度則可以通過弧光單元面板上的電位計(jì)來調(diào)節(jié)設(shè)定，可以從10KLux調(diào)節(jié)至50Klux?；」鈫卧獧z測到的信號通過光纖和數(shù)據(jù)線傳到主控單元，主控單元依據(jù)設(shè)定的邏輯判斷是否發(fā)出跳閘指令。 </p> <p> (4)弧光傳感器是探測弧光的感應(yīng)原件 </p> <p> (5)電源模塊工作電源為交直流兩用 </p> <p> <br /> </p><p> 電弧光的危害： </p> <p> 開關(guān)設(shè)備內(nèi)部間隔發(fā)生故障而產(chǎn)生的電弧光會造成開關(guān)設(shè)備中的壓力和溫度迅速增加，如不及時切除、將可能造成以下重大危害： </p> <p> 電弧光中心溫度（相當(dāng)于太陽表面溫度的2~4倍，約為10000~20000°C過高導(dǎo)致銅排、鋁排熔毀氣化； </p> <p> 電纜熔毀，電纜護(hù)套著火； </p> <p> 開關(guān)設(shè)備劇烈振動，使固定元件松脫； </p> <p> 使上一級變壓器承受近距離短路沖擊，故障電流產(chǎn)生的電動力可能導(dǎo)致變壓器繞組變形引起匝間短路； </p> <p> 故障產(chǎn)生的弧光沖擊波以300m/s速度爆發(fā)，可摧毀途中的任何物質(zhì)，若波及站內(nèi)直流系統(tǒng)導(dǎo)致全站直流失電，將造成無法彌補(bǔ)的重大損失； </p> <p> 燃燒產(chǎn)生的有害氣體被人吸入會產(chǎn)生生命危險； </p> <p> 高溫灼傷皮膚，強(qiáng)光刺傷眼睛 </p> <p> 爆破音振損傷耳膜，肺臟； </p> <p> 碎片飛射，造成人員傷亡。 </p> <p> 電弧光的監(jiān)測及防護(hù) </p> <p> 當(dāng)?shù)蛪洪_關(guān)柜發(fā)生電弧，可以通過三種不同的設(shè)計(jì)理念保護(hù)操作人員和設(shè)備的安全： </p> <p> 改善設(shè)備的機(jī)械結(jié)構(gòu)，使之能夠承受電弧（被動保護(hù)） </p> <p> 設(shè)備安裝限制內(nèi)部電弧效應(yīng)的裝置（主動保護(hù)）高壓弧光保護(hù)**，廠家直銷，歡迎來電咨詢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="數(shù)字化弧光保護(hù)排名,弧光保護(hù)" src="https://tyunfile.71360.com/UploadFile/keaton/637255090208730469/6645876.jpg"></div><p> 要考慮開關(guān)的接觸機(jī)構(gòu)是否存在故障，導(dǎo)致它在較大電流下形成飛弧短路或熱擊穿短路。（二）可能因素該開關(guān)動靜觸頭接觸方式為橫推插入式指夾雙面接觸，發(fā)生合閘彈跳重?fù)舸┑母怕屎苄?。在這一點(diǎn)上遠(yuǎn)優(yōu)于平面拍合式單面接觸方式。但是該開關(guān)動觸頭為雙斷點(diǎn)橋式壓簧片觸頭結(jié)構(gòu)，有12組動靜接觸點(diǎn)，接觸點(diǎn)多、連接點(diǎn)多，有可能發(fā)生以下故障：動觸頭連接虛；靜觸頭連接虛；加速機(jī)構(gòu)速度不夠；在動靜觸頭間已經(jīng)形成很大的接觸電阻；合閘時12組動靜接觸點(diǎn)不同步。（三）解體檢查我們對事故開關(guān)進(jìn)行了解體檢查。檢查發(fā)現(xiàn)：12組動靜觸頭接觸面光滑干凈，顏色如初，觸頭上的導(dǎo)電膏依然如故。三相觸頭密封空間亦完好干凈。沒有發(fā)生強(qiáng)烈電弧所特有的燒熔、弧坑、炭化、變色、飛濺等痕跡。在動靜觸頭前端接觸面邊沿有微小的電火花灼蝕點(diǎn)，屬于正常現(xiàn)象。前面考慮的五點(diǎn)故障因素，除加速機(jī)構(gòu)速度無法測量外，其余可以排除。圖7開關(guān)靜觸頭上黑色導(dǎo)電膏清晰可見圖8開關(guān)動觸頭光滑干凈顏色如初（四）結(jié)論：1.事故發(fā)生瞬間開關(guān)接通的電流基本在額定工作電流范圍內(nèi)（當(dāng)然更在額定接通電流能力范圍內(nèi)）。定量估算可能為：I＝（80×4）×2＝320×2＝640A2.開關(guān)動靜觸頭的電氣結(jié)構(gòu)未發(fā)現(xiàn)異常。電弧光保護(hù)裝置廠家直銷。襄陽弧光保護(hù)價格</p><p style="text-indent:25px">高精度弧光保護(hù)，廠家直銷。數(shù)字化弧光保護(hù)排名</p><p> 小爬電距離＝40mm。放電的危險是存在的?！?。經(jīng)驗(yàn)證明：當(dāng)開關(guān)在較大電流沖擊下瞬間溫升是該數(shù)值的兩倍以上時，開關(guān)塑料外殼表面電阻會急劇下降，此時加上＞750V的高電壓，附著著灰塵的相間絕緣材料表面發(fā)生放電閃絡(luò)短路是完全可能的。4.根據(jù)以上非常有限技術(shù)條件下的分析，筆者認(rèn)為：開關(guān)的接觸機(jī)構(gòu)和絕緣指標(biāo)基本上沒有嚴(yán)重的問題。開關(guān)短路是由于當(dāng)時電路里出現(xiàn)了超出開關(guān)技術(shù)指標(biāo)的異常狀態(tài)。三、安裝問題本開關(guān)安裝存在明顯問題。（一）使用說明書要求本開關(guān)安裝單位是國內(nèi)某儀表廠。某日，該廠在為大廈更換新開關(guān)時隨機(jī)帶來一份《SIWOH1-63～1250系列隔離開關(guān)熔斷器組使用說明書》。說明書內(nèi)容共分八部分。其中第七部分-使用與維修-第2條要求：“開關(guān)上的接線端子和接線裸母線應(yīng)包扎絕緣物，防止開關(guān)相間短路?！保ǘ┐髲B現(xiàn)場安裝實(shí)況大廈南北變配電室18臺低壓無功補(bǔ)償柜上的18臺SIWOH1-630隔離開關(guān)熔斷器組，都沒有按照該使用說明書第七部分-使用與維修-第2條要求安裝。圖10開關(guān)上的接線端子是裸露導(dǎo)體未包扎絕緣物（三）可以說，這一條是開關(guān)制造廠家根據(jù)SIWOH1系列產(chǎn)品的技術(shù)特點(diǎn)，提出的針對性安全要求。如果按照這一條做了。數(shù)字化弧光保護(hù)排名</p><p 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