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开关电æºå˜åŽ‹å™¨çƒ§æ¯çš„åŽŸå› æœ‰å“ªäº›</h3>
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<span>æ–‡ç« å‡ºå¤„ï¼?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电å有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?014-06-12 15:26:00</span>
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<p> <span style="font-size: 16px">ä½ çŸ¥é“开关电æºå˜åŽ‹å™¨çƒ§æ¯çš„åŽŸå› å—?å…¶å®žæœ‰å¾ˆå¤šå¾ˆå¤šçš„åŽŸå› ï¼Œä¸€èµ·æ¥çœ‹çœ‹ä¸‹é¢æœ‰å“ªäº›åŽŸå› å§ã€?/span></p>
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<p><span style="font-size: 16px">　　(1)　é…电å˜åŽ‹å™¨çš„高ã€ä½ŽåŽ‹ç†”æ–件é…ç½®ä¸å½“。å˜åŽ‹å™¨ä¸Šçš„熔æ–件普éå˜åœ¨ç€é…置过大的现象，严é‡è¿‡è½½æ—¶ï¼Œçƒ§æ¯å˜åŽ‹å™¨ã€?/span></p>
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<p><span style="font-size: 16px">　　(2)　é…电å˜åŽ‹å™¨é«˜ã€ä½ŽåŽ‹ä¸¤ä¾§æ— 熔æ–器。有的虽然已ç»è£…上跌è½å¼ç†”æ–器和羊角ä¿é™©ï¼Œä½†å…¶ç†”æ–件多是采用é“或铜ä¸ä»£æ›¿ï¼Œè‡´ä½¿ä½ŽåŽ‹çŸè·¯æˆ–过载时，熔æ–ä»¶æ— æ³•æ£å¸¸ç†”æ–而烧æ¯å˜åŽ‹å™¨ã€?/span></p>
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<p><span style="font-size: 16px">　　(3)　分接开关：</span></p>
<p> </p>
<p><span style="font-size: 16px">　　①ç§è‡ªè°ƒèŠ‚åˆ†æŽ¥å¼€å…³ï¼Œé€ æˆé…å˜åˆ†æŽ¥å¼€å…³ä¸åˆ°ä½ï¼ŒæŽ¥è§¦ä¸è‰¯è€Œçƒ§æ¯ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　②分接开关质é‡å·®ï¼Œå¼•èµ·æ˜Ÿå½¢è§¦å¤´ä½ç½®ä¸å®Œå…¨æŽ¥è§¦ï¼Œå‘生çŸè·¯æˆ–对地放电ã€?/span></p>
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<p><span style="font-size: 16px">　　(4)　由于农æ‘照明线路较多，大多数åˆæ˜¯é‡‡ç”¨å•ç›¸ä¾›ç”µï¼Œå†åŠ 上施工ä¸è·³çº¿çš„éšæ„性和管ç†ä¸Šçš„ä¸åˆ°ä½ï¼Œé€ æˆäº†é…å˜è´Ÿè·çš„å相è¿è¡Œã€‚长期的使用，致使æŸç›¸çº¿åœˆç»ç¼˜è€åŒ–而烧æ¯å˜åŽ‹å™¨ã€?/span></p>
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<p><span style="font-size: 16px">　　(5)　é…电å˜åŽ‹å™¨çš„高ã€ä½ŽåŽ‹çº¿è·¯å¤§å¤šæ•°æ˜¯ç”±æž¶ç©ºçº¿è·¯</span><span style="font-size: 16px">引入，由于é¿é›·å™¨æŠ•è¿ä¸åŠæ—¶æˆ–没有安装10kVé¿é›·å™¨ã€‚é€ æˆé›·å‡»æ—¶çƒ§æ¯å˜åŽ‹å™¨ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　(6)　é“芯多点接地ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　(7)　渗油是å˜åŽ‹å™¨æœ€ä¸ºå¸¸è§çš„外表异常现象。由于å˜åŽ‹å™¨æœ¬ä½“内充满了å˜åŽ‹å™¨æ²¹ï¼Œå„连接部ä½éƒ½æœ‰èƒ¶ç ã€èƒ¶åž«é˜²æ¢æ²¹çš„渗æ¼ã€‚ç»è¿‡é•¿æ—¶é—´çš„è¿è¡Œï¼Œä¼šä½¿å˜åŽ‹å™¨ä¸çš„æŸäº›èƒ¶ç ã€èƒ¶åž«è€åŒ–龟裂而引起渗油。从而导致ç»ç¼˜å—æ½®åŽæ€§èƒ½ä¸‹é™ï¼Œæ”¾ç”µçŸè·¯ï¼Œçƒ§æ¯å˜åŽ‹å™¨ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　(8)　人为的æŸå：</span></p>
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<p><span style="font-size: 16px">　　â‘?/span><strong><a href="http://www.chenfeipower.com/product/"><span style="font-size: 16px">开关电æºå˜åŽ‹å™¨</span></a></strong><span style="font-size: 16px">的引出线是铜螺æ†ï¼Œè€Œæž¶ç©ºçº¿ä¸€èˆ¬å¤šé‡‡ç”¨é“芯胶皮线，铜é“之间很容易产生电化è…蚀ã€?/span></p>
<p> </p>
<p><span style="font-size: 16px">　　②套管闪络放电也是å˜åŽ‹å™¨å¸¸è§çš„异常现象ã€?/span></p>
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<p><span style="font-size: 16px">　　(9)　当é…电å˜åŽ‹å™¨ä½ŽåŽ‹ä¾§å‘生接地ã€ç›¸é—´çŸè·¯æ—¶ï¼Œå°†äº§ç”Ÿä¸€ä¸ªé«˜äºŽé¢å®šç”µæµ?0ï½?0å€çš„çŸè·¯ç”µæµï¼Œè¿™ä¹ˆå¤§çš„电æµä½œç”¨åœ¨é«˜åŽ‹ç»•ç»„上，线圈内部将产生很大的机械应力，这ç§æœºæ¢°åº”力将导致线圈压缩。çŸè·¯æ•…障解除åŽåº”力也éšç€æ¶ˆå¤±ï¼Œçº¿åœˆå¦‚æžœé‡å¤å—到机械应力的作用，其ç»ç¼˜èƒ¶ç ã€èƒ¶åž«ç‰å°±ä¼šæ¾åŠ¨è„±è½;é“心夹æ¿èžºæ “也会æ¾åŠ¨ï¼Œé«˜åŽ‹çº¿åœˆç•¸å˜æˆ–崩裂。å¦å¤–，也会产生高温，从而导致å˜åŽ‹å™¨åœ¨æžçŸçš„时间内烧æ¯ã€?/span></p>
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