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</script> <script type="text/javascript"> var OBJ_TITLE = "高频å˜åŽ‹å™¨çš„自我ä¿æŠ¤æ–¹å¼æœ‰å“ªäº?"; var OBJ_ID = "258"; var MARK = "news"; var ARR_AD_MARK = ["news_detail_1", "news_detail_2", "news_detail_3"]; var SID = "0001,0002,0006"; //æƒé™ID var AUTHORITY_ID = ""; </script> <script src="/JS/Cls_jsPage.js"></script> <!--content:start--> <div class="content"> <div class="plc2"> 当å‰ä½ç½®ï¼?a href="/">首页</a> » <a href="/news/">资讯中心</a> » <a href="/News/News-0001,0002,0006.shtml"> 晨飞资讯</a> » <a href="/Article/helps-85981440061_1.html">高频å˜åŽ‹å™¨çš„自我ä¿æŠ¤æ–¹å¼æœ‰å“ªäº?</a></div> <div class="list4nr"> <div class="n_info_con" id="printableview"> <h3> 高频å˜åŽ‹å™¨çš„自我ä¿æŠ¤æ–¹å¼æœ‰å“ªäº?</h3> <div class="info_con_tit"> <div class="info_con_tit"> <div class="n_tit"> <span>文章出处ï¼?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电å­æœ‰é™å…¬å?/a></a></span><span>网责任编辑：<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者：<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气ï¼?span id="cntrHits">-</span></span><span>å‘表时间ï¼?013-10-29 14:39:00</span> <div class="newchang"> <!-- JiaThis Button BEGIN --> <div id="ckepop"> <a href="http://www.jiathis.com/share/?uid=899792" class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到：</a> <a class="jiathis_button_qzone">QQ空间</a> <a class="jiathis_button_tsina"> 新浪微åš</a> <a class="jiathis_button_tqq">腾讯微åš</a> <a class="jiathis_button_tsohu">æœç‹å¾®åš</a> <a class="jiathis_button_t163">网易微åš</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script> <!-- JiaThis Button END --> </div> </div> </div> </div> <div id="cntrBody"> <p>　　å½?strong><a href="http://www.chenfeipower.com/product/product-0001,0015.shtml">高频å˜åŽ‹å™?/a></strong>的工作处于一个比较å±é™©çš„环境下时,一般都会采用自我ä¿æŠ¤æ–¹å¼?高频å˜åŽ‹å™¨çš„ä¸æ­£å¸¸å·¥ä½œçŠ¶æ€ä¸»è¦æœ‰è¿‡è´Ÿè·ã€å¤–部短路引起的过电æµã€å¤–部接地短路引起的中性点过电压ã€æ²¹ç®±æ¼æ²¹å¼•èµ·çš„æ²¹é¢é™ä½Žæˆ–冷å´ç³»ç»Ÿæ•…障引起的温度å‡é«˜ç­‰ã€‚此外，大容é‡é«˜é¢‘å˜åŽ‹å™¨ï¼Œç”±äºŽå…¶é¢å®šå·¥ä½œç£é€šå¯†åº¦è¾ƒé«˜ï¼Œå·¥ä½œç£å¯†ä¸Žç”µåŽ‹é¢‘率比æˆæ­£æ¯”例，在过电压或低频率下è¿è¡Œæ—¶ï¼Œå¯èƒ½å¼•èµ·å˜åŽ‹å™¨çš„过励ç£æ•…障等。针对以上情况，大型高频å˜åŽ‹å™¨ä¸€èˆ¬é‡‡ç”¨ä»¥ä¸‹å‡ ç§ä¿æŠ¤æ–¹å¼ï¼š</p> <p>　　一ã€è¿‡è´Ÿè·ä¿æŠ¤ï¼šä¿æŠ¤å¯¹ç§°è¿‡è´Ÿè·ï¼Œä»…作用于信å·ã€?/p> <p>　　二ã€ç“¦æ–¯ä¿æŠ¤ï¼šä¿æŠ¤é«˜é¢‘å˜åŽ‹å™¨å†…部短路和油é¢é™ä½Žçš„æ•…éšœã€?/p> <p>　　三ã€è¿‡åŠ±ç£ä¿æŠ¤ï¼šä¿æŠ¤é«˜é¢‘å˜åŽ‹å™¨çš„过励ç£ä¸è¶…过å…许的é™åº¦ã€?/p> <p>　　四ã€é›¶åºç”µæµä¿æŠ¤ï¼šä¿æŠ¤å¤§æŽ¥åœ°ç”µæµç³»ç»Ÿçš„外部å•ç›¸æŽ¥åœ°çŸ­è·¯ã€?/p> <p>　　五ã€è¿‡ç”µæµä¿æŠ¤ï¼šä¿æŠ¤å¤–部相间短路，并作为瓦斯ä¿æŠ¤å’Œå·®åŠ¨ä¿æŠ¤ï¼ˆæˆ–电æµé€Ÿæ–­ä¿æŠ¤ï¼‰çš„åŽå¤‡ä¿æŠ¤ã€?/p> <p>　　六ã€å·®åŠ¨ä¿æŠ¤ã€ç”µæµé€Ÿæ–­ä¿æŠ¤ï¼šä¿æŠ¤å˜åŽ‹å™¨ç»•ç»„或引出线å„相的相间短路ã€å¤§æŽ¥åœ°ç”µæµç³»ç»Ÿçš„接地短路以åŠç»•ç»„åŒé—´çŸ­è·¯ã€?/p> <p>　　上述ä¿æŠ¤ä½œç”¨ä¸­å…¶ä¸­ç“¦æ–¯ä¿æŠ¤å应高频å˜åŽ‹å™¨æ²¹ç®±å†…部å„ç§æ•…障和油é¢é™ä½Žã€?.8MVAåŠä»¥ä¸Šæ²¹æµ¸å¼é«˜é¢‘å˜åŽ‹å™¨å’Œ0.4MVAåŠä»¥ä¸Šè½¦é—´å†…油浸å¼å˜åŽ‹å™¨ï¼Œå‡åº”装设瓦斯ä¿æŠ¤ã€‚当油箱内故障产生轻微瓦斯或油é¢ä¸‹é™æ—¶ï¼Œåº”瞬时动作于信å·ï¼›å½“产生大é‡ç“¦æ–¯æ—¶ï¼Œåº”动作于断开å˜åŽ‹å™¨å„侧断路器。带负è·è°ƒåŽ‹çš„油浸å¼å˜åŽ‹å™¨çš„调压装置，亦应装设瓦斯ä¿æŠ¤ã€?br />  </p> </div> <div class="apage" id="showfenye"> <!--资讯分页:start--> <script type="text/javascript"> var pagecont=1; 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