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高頻變壓器應該怎樣保養(yǎng)維護??</h3>
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<span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網責任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span
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<p> 高頻變壓器是現(xiàn)代電路系統(tǒng)中不可缺少的一個電力設??在很多工業(yè)生產中有著廣泛的應??在正常的使用??要想??strong><a href="http://linhang.com.cn/product/product-0001,0015.shtml">高頻變壓??/a></strong>使用的更加安全長??我們該怎樣對其進行保養(yǎng)維護??</p>
<p> 1．防止過載運??如果長期過載運行，會引起線圈發(fā)熱，使絕緣逐漸老化，造成匣間短路、相間短路或對地短路及油的分解； </p>
<p> 2．防止電??電源一般通過架空線而來，而架空線很容易遭受雷擊，變壓器會因擊穿絕緣而燒毀； </p>
<p> 3．防止鐵芯絕緣老化損壞:鐵芯絕緣老化或夾緊螺栓套管損壞，會使鐵芯產生很大的渦流，引起鐵芯長期發(fā)熱造成絕緣老化?? </p>
<p> 4．防止檢修不慎破壞絕??檢修吊芯時，應注意保護線圈或絕緣套管，如果發(fā)現(xiàn)有擦破損傷，應及時處理； </p>
<p> 5．保證導線接觸良??線圈內部接頭接觸不良，線圈之間的連接點、引至高、低壓側套管的接點、以及分接開關上各支點接觸不良，會產生局部過熱，破壞絕緣，發(fā)生短路或斷路。此時所產生的高溫電弧會使絕緣油分解，產生大量氣體，變壓器內壓力加。當壓力超過瓦斯斷電器保護定值而不跳閘時，會發(fā)生爆炸； </p>
<p> 6．保證絕緣油質量:絕緣油在貯存、運輸或運行維護中，若油質量差或雜質、水分過多，會降低絕緣強度。當絕緣強度降低到一定值時，變壓器就會短路而引起電火花、電弧或出現(xiàn)危險溫度。因此，運行中應定期化驗油質，不合格的油應及時更換；</p>
<p> 7．保持良好的接地:對于采用保護接零的低壓系統(tǒng)，低壓側中性點要直接接地當三相負載不平衡時，零線上會出現(xiàn)電流。當這一電流過大而接觸電阻又較大時，接地點就會出現(xiàn)高溫，引燃周圍的可燃物質； <br />
<br />
8．短路保護要可靠:線圈或負載發(fā)生短路，變壓器將承受相當大的短路電流，如果保護系統(tǒng)失靈或保護定值過大，就有可能燒毀變壓器。為此，必須安裝可靠的短路保護裝置； </p>
<p> 9．防止超??運行時應監(jiān)視溫度的變化。如果變壓器線圈導線是A級絕緣，其絕緣體以紙和棉紗為主，溫度的高低對絕緣和使用壽命的影響很大，溫度每升高8℃，絕緣壽命要減??0%左右。變壓器在正常溫??90 ??下運行，壽命??0年；若溫度升??05℃，則壽命為7??溫度升至120℃，壽命僅為兩年。所以高頻變壓器運行時，一定要保持良好的通風和冷卻，必要時可采取強制通風，以達到降低變壓器溫升的目的??br />
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