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tcPro"><section class="home-main container clearfix"><div id="8y8uyoa" class="twoCol"><div id="00wk8s8" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_csjhsb/">傳輸、交換設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-csjhsb_dhjhj/">電話交換機(jī)</a>?海南電話交換機(jī)總代理南京德世偉業(yè)軟件技術(shù)供應(yīng)</p><div id="ua0wcay" class="leftbox clearfix"><h1>海南電話交換機(jī)總代理南京德世偉業(yè)軟件技術(shù)供應(yīng)</h1><div id="csoi0wu" class="proBig"><div id="emcaym0" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989706097149850_njdswy_3649872.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="w88agwu" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989706097149850_njdswy_3649872.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ssaqg8u" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>海南電話交換機(jī)總代理</p><p><span>***更新：</span>2020-05-30 04:07:10</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="2somkag" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">南京德世偉業(yè)軟件技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>李永亮</p><p><span>郵箱: </span>634765682@qq.com</p><p><span>電話: </span>13276689930</p><p><span>傳真: </span>025_84728227</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>025-84728227</p><p><span>地址: </span>經(jīng)濟(jì)開發(fā)區(qū)恒盛路5號(hào)4號(hào)樓215-D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="owm8m0s" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="o08mcqw" class="box"><p><p style="text-indent:25px">氣體放電管陶瓷氣體放電管是在放電間隙內(nèi)充入適當(dāng)?shù)亩栊詺怏w介質(zhì)。配以高活性的電子發(fā)射材料及放電引燃機(jī)構(gòu)，通過貴金屬焊料高溫封接而成的一種特殊的金屬陶瓷結(jié)構(gòu)的氣體放電器件。它可用于瞬間過電壓防浪涌，也可用作點(diǎn)火。其高阻抗、低極間電容和高耐沖擊電流是其它放電管所不具備的。當(dāng)線路有瞬時(shí)過電壓竄入時(shí)，放電管被擊穿，阻抗迅速下降，幾乎是短路狀態(tài)。放電管將大電流通過線路接地或回路泄放，也將電壓限制在低電位，從而保護(hù)了線路及設(shè)備。當(dāng)過電壓浪涌消失后，又迅速的恢復(fù)到的高阻狀態(tài)，保證線路的正常工作。氣體放電管的特點(diǎn)是：抗高壓、抗高電流沖擊（75-4000V），但在響應(yīng)時(shí)間上會(huì)比低壓防護(hù)電路元件要慢，放電時(shí)間長、動(dòng)作靈敏度不夠理想，對于波頭上升陡度較大的雷電波難以有效地抑制，海南電話交換機(jī)總代理。相對放電時(shí)間越短、耐壓越高的**其性能會(huì)越好當(dāng)然造價(jià)會(huì)越高。在電話交換機(jī)行業(yè)應(yīng)用上把氣體放電管類的產(chǎn)品用做配線部分也就是外部的防雷，海南電話交換機(jī)總代理，海南電話交換機(jī)總代理、防高壓措施。也就是我們建議廣大用戶配該類放雷措施的主要組成器件，銜接于電話交換機(jī)與線路之間。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南電話交換機(jī)總代理" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989706097149850_njdswy_3649872.png"></div><p style="text-indent:25px">電話交換機(jī)內(nèi)部采用壓敏電阻+熱敏電阻+外部氣體放電管構(gòu)建成三級(jí)防雷措施，當(dāng)然也有更高級(jí)別的防護(hù)措施的如：高精斷的昂貴儀器采用四級(jí)、五級(jí)的防護(hù)措施，但由于其造價(jià)也非常昂貴用做電話交換機(jī)行業(yè)顯然不太現(xiàn)實(shí)。雷電很強(qiáng)大，有時(shí)候大的你無法想象，任何一種措施都無法**完全避免雷電的損害。對于集團(tuán)電話交換機(jī)設(shè)備來說有高于5V的電壓就有損壞設(shè)備的可能，所以一般的防雷措施都是盡量的去避免雷電的損壞、減少損壞的程度。根據(jù)我們的經(jīng)驗(yàn)：完全沒有防護(hù)措施的設(shè)備在遭遇中、輕度雷電的損壞的情況損壞程度會(huì)達(dá)到70%以上，擁有內(nèi)部元件級(jí)防護(hù)（壓/熱敏元件）損失程度在50-20%之間，采用質(zhì)量好的三級(jí)防護(hù)損失程度會(huì)在20%--0% 輕微損壞或完全防護(hù)。各級(jí)放護(hù)元件根據(jù)其特性、標(biāo)準(zhǔn)值會(huì)有一個(gè)極限值當(dāng)遭遇強(qiáng)電超出其可耐受范圍時(shí) 就會(huì)出現(xiàn)“魚死網(wǎng)破”的局面…..防護(hù)元件在消耗一部分能量之后會(huì)被擊傳！損壞、甚至炸裂…這種現(xiàn)象會(huì)導(dǎo)致防護(hù)元件無法重復(fù)使用必須更換，但相對于減輕對設(shè)備價(jià)值角度來講這點(diǎn)損失是完全有必要的。所以即使有相關(guān)的防護(hù)措施的用戶應(yīng)當(dāng)在雷雨過后或每年雷雨季節(jié)到來之前檢查是否完好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="海南電話交換機(jī)總代理" src="http://tyunfile.71360.com/UpLoadFile/2019/7/17/14/636989706098401482_njdswy_2381943.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/83048.html</p></div></div></div></div></div><div id="88a0syc" class="page-right twoColRt"><div id="yous82y" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yge0wua" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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