{"id":7302,"date":"2026-11-07T06:46:47","date_gmt":"2026-11-07T06:46:47","guid":{"rendered":"https:\/\/www.lstransformer.com\/?p=7302"},"modified":"2026-10-26T12:15:44","modified_gmt":"2026-10-26T12:15:44","slug":"a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/ja\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\/","title":{"rendered":"\u30a8\u30fc\u30eb&#8220;\u30d0\u30fc\u30f3&#8221;\u5207\u308a\u66ff\u3048\u6642\u306b\u3001\u30c8\u30e9\u30f3\u30b9\u3068\u305d\u306e\u640d\u50b7?"},"content":{"rendered":"<h1>\u30a8\u30fc\u30eb&#8220;\u30d0\u30fc\u30f3&#8221;\u5207\u308a\u66ff\u3048\u6642\u306b\u3001\u30c8\u30e9\u30f3\u30b9\u3068\u305d\u306e\u640d\u50b7?<\/h1>\n<p>\u30c8\u30e9\u30f3\u30b9\u306f\u91cd\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u5b89\u5b9a\u3057\u305f\u904b\u7528\u304c\u91cd\u8981\u3067\u3042\u308b\u3002 \u6642\u901a\u96fb\u30c8\u30e9\u30f3\u30b9\u8a2d\u7f6e\u5f8c\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u3046\u5927\u304d\u306a\u30cf\u30df\u30f3\u30b0\u30ce\u30a4\u30ba\u3084\u97f3&#8220;\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8-\u30ac\u30d0\u30ca\u30f3\u30b9\u306f&#8221;\u3053\u306e\u73fe\u8c61\u3092\u53ef\u80fd\u306b\u304a\u3051\u308b\u96fb\u529b\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u3001\u4e16\u754c\u306e\u591a\u304f\u304c\u61f8\u5ff5\u4e8b\u306e\u3044\u3092\u793a\u3059\u65ad\u5c64\u306e\u30c8\u30e9\u30f3\u30b9? \u3053\u306e\u8a18\u4e8b\u306b\u8feb\u308b\u6839\u672c\u539f\u56e0\u306f\u3001\u4ee5\u4e0b\u306e\u5f62\u3067\u8cb4\u793e\u3092\u304a\u624b\u4f1d\u3044\u3057\u307e\u533a\u5225\u3059\u308b\u901a\u5e38\u306e\u7269\u7406\u7684\u30a4\u30d9\u30f3\u30c8\u306e\u6f5c\u5728\u7684\u306a\u8b66\u544a\u3002<\/p>\n<p><a href=\"https:\/\/www.lstransformer.com\/ja\/product-category\/transformer\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-7304\" src=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5.jpg\" alt=\"\" width=\"920\" height=\"498\" srcset=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5.jpg 920w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5-300x162.jpg 300w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5-768x416.jpg 768w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5-18x10.jpg 18w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/1-5-600x325.jpg 600w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/a><\/p>\n<h3><em>1. \u4e3b\u306a\u8981\u56e0\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ce\u30a4\u30ba:\u7a81\u5165\u96fb\u6d41<\/em><\/h3>\n<p>\u6700\u5927\u306e\u539f\u56e0\u3067\u3042\u308a\u3001\u5927\u304d\u306a\u97f3\u306f\u3001\u7a81\u5165\u96fb\u6d41\u52b1\u78c1\u7a81\u5165\u96fb\u6d41\u3002 \u3053\u308c\u306f\u4e00\u904e\u6027\u3067\u3001\u9ad8-\u5927\u96fb\u6d41\u30b5\u30fc\u30b8\u3092\u5927\u304d\u304f\u8d85\u3048\u308b\u5b9a\u683c\u96fb\u6d41\u6d41\u308c\u306e\u5dfb\u7dda\u306e\u7dda\u5f84\u306f\u3001\u52d5\u4f5c\u6642\u306e\u30c8\u30e9\u30f3\u30b9\u3092\u5207\u308a\u66ff\u3048\u3092\u96fb\u529b\u30b0\u30ea\u30c3\u30c9\u3001\u7121\u8ca0\u8377\u72b6\u614b\uff08\u63a5\u7d9a\u3067\u3042\u308b\u3002<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>1.1\u3069\u306e\u7a81\u5165\u96fb\u6d41\u304c\u8d77\u3053\u308a<\/b><\/strong><\/h4>\n<p style=\"padding-left: 40px;\">\u30c8\u30e9\u30f3\u30b9\u306e\u539f\u5247\u306e\u96fb\u78c1\u8a98\u5c0e\u3057\u307e\u3059\u3002 \u4e2d\u3067\u5b9a\u5e38\u904b\u8ee2\u306b\u306f\u3001\u78c1\u675f(\u03a6)\u306e\u30b3\u30a2\u306f\u3001\u5370\u52a0\u96fb\u5727(V)\u3067\u3059\u3002 \u3057\u304b\u3057\u3001\u6b63\u78ba\u306b\u4e00\u77ac\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u3001\u3053\u306e\u30d0\u30e9\u30f3\u30b9\u306b\u306f\u30ed\u30b0\u30a4\u30f3\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h5 style=\"padding-left: 80px;\"><strong><b>1.1.1\u306e\u904e\u6e21\u904e\u7a0b\u306e\u675f\u3092\u8a2d\u7acb<\/b><\/strong><\/h5>\n<p style=\"padding-left: 80px;\">AC\u96fb\u5727\u304c\u6b63\u5f26\u6ce2\u3067\u3059\u3002 \u3092\u77ac\u6642\u306b\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0(\u96fb\u5727\u4f4d\u76f8\u89d2\u7684\u306a\u5275\u5efa\u5f53\u521d\u306e\u78c1\u6c17\u30d5\u30e9\u30c3\u30af\u30b9 \u306b\u3088\u308b\u30d5\u30a1\u30e9\u30c7&#8217;s\u6cd5<\/p>\n<p style=\"text-align: center; padding-left: 40px;\"><strong><b>V=N(d\u03a6\/dt)<\/b><\/strong><\/p>\n<p style=\"padding-left: 80px;\">V\u306f\u96fb\u5727\u304c\u77ac\u9593\u7684\u306b<\/p>\n<p style=\"padding-left: 80px;\">\u00a0N\u304c<\/p>\n<p style=\"padding-left: 80px;\">\u00a0d\u03a6\/dt\u304c\u5909\u5316\u7387\u306f\u3001\u6d41\u52d5\u7684\u3067\u3042\u3063\u305f\u3002<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">\u306e\u30dd\u30a4\u30f3\u30c8\uff1a\u00a0<\/span>\u306e\u5834\u5408\u306f\u30b9\u30a4\u30c3\u30c1\u3092\u9589\u3058\u7cbe\u5ea6\u306e\u96fb\u5727\u304c\u30bc\u30ed\u4ea4\u5dee\u70b9\uff08\u77ac\u6642\u96fb\u5727\u304c0\u306e\u8981\u6c42\u306e\u5909\u5316\u7387\u306e\u675f(d\u03a6\/dt)\u3082\u30bc\u30ed\u306b\u306a\u308a\u307e\u3059\u3002 \u3057\u304b\u3057\u3001\u30b3\u30a2\u306e\u78c1\u675f\u306e\u30cb\u30fc\u30ba\u304b\u3089\u30bc\u30ed\u3068\u306a\u308a\u307e\u3059\u3002 \u3059&#8220;\u8ffd&#8221;\u306e\u5b9a\u5e38\u72b6\u614b\u306e\u78c1\u675f\u6ce2\u5f62\u306b\u5bfe\u5fdc\u3059\u308b\u96fb\u5727\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u5927\u304d\u306a\u904e\u6e21\u675f\u3092\u76f8\u6bba\u3059\u308b\u3082\u306e\u3068\u3059\u308b\u3002 \u8a2d\u7acb\u306b\u3053\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u304c\u5fc5\u8981\u3067\u975e\u5e38\u306b\u5927\u304d\u306a\u77ac\u9593\u7684\u306b\u5dfb\u304d\u2014\u3053\u306e\u7a81\u5165\u96fb\u6d41\u3002<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>1.2\u7269\u306e\u5f71\u97ff\u7d50\u679c\u3068\u3057\u3066\u751f\u3058\u305f\u97f3<\/b><\/strong><\/h4>\n<p style=\"padding-left: 40px;\">\u3053\u306e\u77ac\u6642\u96fb\u6d41\u3067\u304d\u308b6-10\u56de\u306e\u5b9a\u683c\u96fb\u6d41\u306f\u3001\u30c8\u30ea\u30ac\u306b\u5f37\u3044\u7269\u7406\u7684\u306a\u52b9\u679c\u3092\u5185\u90e8\u306e\u30c8\u30e9\u30f3\u30b9:<\/p>\n<h6 style=\"padding-left: 80px;\"><strong><b>(1) <\/b><\/strong><strong><b>\u5f37\u3044\u96fb\u78c1\u529b: <\/b><\/strong><\/h6>\n<p style=\"padding-left: 80px;\">\u306e\u9ad8\u96fb\u6d41\u3092\u751f\u6210\u3057\u3001\u5f37\u529b\u306a\u78c1\u5834\u306e\u5468\u308a\u306b\u5dfb\u7dda\u3059\u308b\u3053\u3068\u306b\u5dfb\u7dda\u5c0e\u4f53\u3001\u6838\u69cb\u9020\u90e8\u54c1\u306e\u5927\u5e45\u306a\u6a5f\u68b0\u7684\u30b9\u30c8\u30ec\u30b9\u304c\u3001\u77ac\u6642\u306e\u5909\u4f4d\u3084\u632f\u52d5.<\/p>\n<h6 style=\"padding-left: 80px;\"><strong><b>(2) <\/b><\/strong><strong><b>\u6838\u78c1\u6b6a: <\/b><\/strong><\/h6>\n<p style=\"padding-left: 80px;\">\u30c8\u30e9\u30f3\u30b9\u30b3\u30a2\u306e\u7a4d\u5c64\u30b7\u30ea\u30b3\u30f3\u3067\u3059\u3002 \u4e0b\u306b\u6fc0\u3057\u304f\u3001\u5909\u5316\u3059\u308b\u78c1\u5834\u306e\u4e2d\u6838\u6750\u6599\u306e\u5c55\u793a&#8220;\u78c1\u6b6a,&#8221;\u610f\u5473\u3068\u305d\u306e\u7269\u7406\u7684\u5bf8\u6cd5\u5909\u5316\u3092\u7d30\u5bc6\u306b\u3068\u78c1\u5834\u306e\u5f37\u307f\u3067\u3059\u3002<\/p>\n<h6 style=\"padding-left: 80px;\"><strong><b>(3) <\/b><\/strong><strong><b>\u30b5\u30a6\u30f3\u30c9\u751f\u6210: <\/b><\/strong><\/h6>\n<p style=\"padding-left: 80px;\">\u69cb\u9020\u306e\u632f\u52d5\u304b\u3089\u306e\u96fb\u78c1\u529b\u3068\u7d50\u5408\u632f\u52d5\u304b\u3089\u4e2d\u6838\u78c1\u6b6a. \u3053\u308c\u3089\u306e\u632f\u52d5\u3001\u8c4a\u304b\u306a\u5468\u6ce2\u6570\u30b3\u30f3\u30c6\u30f3\u30c4\u3001\u5897\u5e45\u3055\u308c\u3001\u30bf\u30f3\u30af\u3001\u30e9\u30b8\u30a8\u30fc\u30bf\u30fc\u7b49 \u3068\u3068\u3057\u3066\u767a\u58f2\u3059\u308b\u3053\u3068\u306b\u3088\u308a\"\u805e\u3053\u3048\u308b\"&#8220;\u3001&#8221;&#8220;\u30d6\u30fc\u30e0&#8221;\u307e\u305f\u306f\u30cf\u30df\u30f3\u30b0\u30ce\u30a4\u30ba\u3067\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"292\"><strong>\u7279\u5fb4<\/strong><\/td>\n<td width=\"683\"><strong>\u5178\u578b\u7684\u306a\u5024\u306e\u8aac\u660e<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"292\">\u30d4\u30fc\u30af\u632f\u5e45\u304c<\/td>\n<td width=\"683\">\u67006-10\u56de\u5b9a\u683c\u96fb\u6d41<\/td>\n<\/tr>\n<tr>\n<td width=\"292\">\u671f\u9593<\/td>\n<td width=\"683\">\u4e00\u822c\u7684\u306b\u8907\u6570\u306e\u96fb\u529b\u30b5\u30a4\u30af\u30eb\u306f\u6570\u5341-\u6570\u767e\u30df\u30ea\u79d2\u304b\u3089\u306e\u7d4c\u904e\u30df\u30ea\u79d2\u6570)<\/td>\n<\/tr>\n<tr>\n<td width=\"292\">\u6e1b\u8870\u7387<\/td>\n<td width=\"683\">\u9ad8\u901f\u5d29\u58ca\u5b9a\u5e38\u72b6\u614b\u306e\u7121\u8ca0\u8377\u96fb\u6d41\u306b\u4f9d\u5b58\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9-\u30c8\u30e9\u30f3\u30b9\u30c7\u30b6\u30a4\u30f3)<\/td>\n<\/tr>\n<tr>\n<td width=\"292\">\u4e3b\u306a\u7269\u7406\u7684\u5f71\u97ff<\/td>\n<td width=\"683\">\u96fb\u78c1\u6a5f\u68b0\u7684\u306a\u529b\u306f\u3001\u4e2d\u6838\u78c1\u6b6a<\/td>\n<\/tr>\n<tr>\n<td width=\"292\">\u4ee3\u8868\u7684\u306a\u97f3<\/td>\n<td width=\"683\">\u5358\u4e00\u307e\u305f\u306f\u77ed\u671f\u30b7\u30ea\u30fc\u30ba\u306e&#8220;\u3001&#8221;&#8220;\u30d6\u30fc\u30e0&#8221;\u307e\u305f\u306f&#8220;thud&#8221;\u97f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"table-note\" style=\"text-align: center;\">\u88681:\u5909\u5727\u5668\u306e\u7a81\u5165\u96fb\u6d41\u7279\u6027-\u5f71\u97ff<\/div>\n<h3><em>2. \u7279\u5fb4\u901a\u5e38\u306e\u7a81\u5165\u96fb\u6d41\u30ce\u30a4\u30ba\u304b\u3089\u8aa4\u308a\u306e\u6307\u6a19<\/em><\/h3>\n<p>\u304c\u6700\u3082\u5927\u304d\u306a\u97f3\u306b\u3088\u308b\u901a\u5e38\u5909\u5727\u5668\u306e\u7a81\u5165\u96fb\u6d41\u306f\u3001\u7570\u5e38\u306a\u97f3\u304c\u4fe1\u53f7\u307e\u3059\u3002 \u308b\u304b\u3092\u77e5\u308b\u3053\u3068\u306e\u5dee\u5225\u5316\u304c\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>2.1\u7279\u6027\u901a\u5e38\u6642\u306e\u7a81\u5165\u96fb\u6d41\u30ce\u30a4\u30ba<\/b><\/strong><\/h4>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(1)\u30bf\u30a4\u30df\u30f3\u30b0:<\/span> Occurs\u00a0strictly at the moment of switching on. The sound is brief (usually ends within 1-2 seconds).<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(2)\u81ea\u7136<\/span> \u5358\u4e00\u306e&#8220;\u30d6\u30fc\u30e0&#8221;\u307e\u305f\u306f\u77ed\u671f\u30b7\u30ea\u30fc\u30ba\u306e&#8220;\u524d\u9aea&#8221;\u7d20\u65e9\u304f\u5927\u304d\u304f\u6539\u5584\u3057\u307e\u3059\u3002 \u305d\u306e\u5f8c\u3001\u30c8\u30e9\u30f3\u30b9\u904b\u884c\u5747\u9806\u8abf\u306b\u63a8\u79fb\u3057\u3001\u99c6\u52d5\u97f3\u3092\u7acb\u3066\u7d9a\u3051\u3066\u3044\u308b\u3002<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">\uff083\uff09\u305d\u306e\u4ed6\u306e\u75c7\u72b6<\/span> After the sound, there is\u00a0no persistent abnormal noise,\u00a0no unusual smoke or gas emission, and\u00a0no protective device operation\u00a0(e.g., relays do not trip).<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>2.2\u7279\u6027\u306e\u7570\u5e38\u97f3\u3092\u793a\u3059\u6f5c\u5728\u65ad\u5c64<\/b><\/strong><\/h4>\n<p style=\"padding-left: 40px;\">\u4ee5\u4e0b\u306e\u5834\u5408\u97f3\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u9014\u4e2d\u3067\u5207\u308a\u66ff\u3048\u3068\u8ab2\u984c:<\/p>\n<h5 style=\"padding-left: 80px;\"><strong><b>2.2.1\u97f3\u304b\u3089\u5185\u90e8\u96fb\u6c17\u7684\u6545\u969c\u306e<\/b><\/strong><\/h5>\n<p style=\"padding-left: 80px;\">\u4f8b\u3048\u3070\u3001\u30a4\u30f3\u30bf\u30fc\u756a\u5dfb\u304d\u30b7\u30e7\u30fc\u30c8\u30d1\u30f3\u30c4\u3001\u53b3\u3057\u3044\u793e\u5185\u6392\u51fa\u3057\u307e\u3059\u3002 \u97f3\u304c\u30df\u30c3\u30af\u30b9\u3068\u7a81\u5165\u96fb\u30ce\u30a4\u30ba\u304c\u9055\u3044:<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(1) Sharp cracking or continuous arcing\/discharge sounds: <\/span>\u306b\u542b\u307e\u308c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u5185\u90e8\u306e\u7d76\u7e01\u7834\u58ca\u306b\u81f3\u308b\u3002<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(2) Accompanied by protection trips:<\/span> \u3044\u3053\u3068\u304c\u591a\u3044\u3068\u3044\u3046\u6025\u6fc0\u306a\u52d5\u4f5c\u904e\u96fb\u6d41\u3001\u5fae\u5206\u30ac\u30b9\u30d6\u30e9\u30f3\u30c9)\u30ea\u30ec\u30fc\u3001\u30c8\u30ea\u30c3\u30d7\u306e\u56de\u8def\u3067\u3059\u3002<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(3) Persistence:<\/span> \u65ad\u5c64\u304a\u3088\u3073\u95a2\u9023\u3059\u308b\u97f3-\u632f\u52d5\u306e\u4e00\u822c\u7684\u306a\u7d20\u65e9\u304f\u6e1b\u8870\u306e\u3088\u3046\u306a\u7a81\u5165\u96fb\u6d41\u9632\u6b62\u52b9\u679c\u3002<\/p>\n<h5 style=\"padding-left: 80px;\"><strong><b>2.2.2\u97f3\u304b\u3089\u306e\u6a5f\u68b0\u7684\u554f\u984c<\/b><\/strong><\/h5>\n<p style=\"padding-left: 80px;\">\u4f8b\u3048\u3070\u3001\u8ca7\u56f0\u5c64\u30b3\u30a2\u306e\u63a5\u3001\u3086\u3063\u305f\u308a\u306e\u30af\u30e9\u30f3\u30d7\u69cb\u9020\u306e\u52b1\u8d77\u306b\u3088\u308b\u5927\u304d\u306a\u7a81\u5165\u96fb\u6d41\u9632\u6b62\u3002<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(1)Persistent, rhythmic vibrating or knocking sounds:<\/span> \u7570\u5e38\u306e\u30ea\u30ba\u30e0&#8220;\u523b,&#8221;&#8220;\u30af\u30ea\u30c3\u30af&#8221;\u51f9\u51f8&#8220;\u8cd1\u3084\u304b&#8221;\u304c\u7d9a\u304f\u4e2d\u3067\u5b9a\u5e38\u904b\u8ee2\u30b7\u30ca\u30ea\u30aa\u306e\u5f8c\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u6642\u306e\u5024\u3067\u3059\u3002\u203b<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(2)Localized sound:<\/span> \u6642\u306e\u97f3\u6e90\u304d\u304f\u8fd1\u304f\u306e\u30c8\u30e9\u30f3\u30b9\u3092\u307f\u308b\u3068\u3001\u5730\u5143\u306e\u6a5f\u68b0\u7684\u554f\u984c\u3067\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong><b>\u5074\u9762<\/b><\/strong><\/td>\n<td><strong><b>\u901a\u5e38\u306e\u7a81\u5165\u96fb\u6d41\u97f3<\/b><\/strong><\/td>\n<td width=\"508\"><strong><b>\u7591\u3044\u306e\u3042\u308b\u65ad\u5c64\u306e\u97f3<\/b><\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u30bf\u30a4\u30df\u30f3\u30b0<\/td>\n<td>\u53b3\u30b9\u30a4\u30c3\u30c1\u306e\u77ac\u9593<\/td>\n<td width=\"508\">May occur at switch-on, but\u00a0more often persists or recurs afterward<\/td>\n<\/tr>\n<tr>\n<td>\u97f3\u8cea<\/td>\n<td>\u4f4e\u97f3&#8220;\u30d6\u30fc\u30e0&#8221;\u6982\u8981<\/td>\n<td width=\"508\">\u6025crackle\u3001\u7d99\u7d9a\u7684\u306b\u30a2\u30fc\u30af\u304c\u767a\u97f3\u3001\u30ea\u30ba\u30df\u30ab\u30eb\u306a\u30ce\u30c3\u30af-\u632f\u52d5<\/td>\n<\/tr>\n<tr>\n<td>\u671f\u9593<\/td>\n<td>\u6d88\u5931\u3092\u5b8c\u5168\u306b\u5185\u79d2<\/td>\n<td width=\"508\">\u7d9a\u307e\u305f\u306f\u65ad\u7d9a\u7684\u306b\u767a\u751f<\/td>\n<\/tr>\n<tr>\n<td>\u306b\u4f34\u3046\u96fb\u6c17\u6a19\u8b58<\/td>\n<td>\u306e\u4fdd\u8b77\u306f\u3001\u30e1\u30fc\u30c8\u30eb\u306b\u623b\u308b<\/td>\n<td width=\"508\">\u591a\u304f\u306e\u4fdd\u8b77\u3001\u6301\u7d9a\u7684\u306a\u7570\u5e38\u8a08\u6e2c\u3001\u7a81\u7136\u306e\u5909\u5316\u3092\u30aa\u30f3\u30e9\u30a4\u30f3DGA\u30c7\u30fc\u30bf<\/td>\n<\/tr>\n<tr>\n<td>\u305d\u306e\u5f8c\u306e\u64cd\u4f5c<\/td>\n<td>\u97f3\u304c\u76f4\u3061\u306b\u670d\u3092\u7740hum<\/td>\n<td width=\"508\">\u904b\u7528\u30ce\u30a4\u30ba\u306f\u7570\u5e38\u306a\u97f3\u3084\u4e0d\u5b89\u5b9a\u306a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"table-note\" style=\"text-align: center;\">\u88682\u306e\u3054\u6848\u5185\u306e\u7279\u5b9a\u306e\u30c8\u30e9\u30f3\u30b9\u5207\u308a\u66ff\u3048\u97f3<\/div>\n<h3><em>3. \u3069\u306e\u3088\u3046\u306b\u7ba1\u7406&amp;\u8efd\u6e1b\u3059\u308b\u7a81\u5165\u96fb\u6d41\u3068\u305d\u306e\u5f71\u97ff<\/em><\/h3>\n<p>\u5834\u5408\u306b\u304a\u3044\u3066\u3082\u30ce\u30a4\u30ba\u306f\u901a\u5e38\u3001\u9ad8\u7a81\u5165\u96fb\u6d41\u306e\u30dd\u30fc\u30ba\u53ef\u80fd\u6027\u306e\u30b9\u30c8\u30ec\u30b9\u306b\u30b0\u30ea\u30c3\u30c9\u30c8\u30e9\u30f3\u30b9\u305d\u306e\u3082\u306e\uff08\u4f8b\u3048\u3070\u3001\u96fb\u5727\u30c7\u30a3\u30c3\u30d7\u3001\u30ea\u30b9\u30af\u306e\u30ea\u30ec\u30fc misoperation). \u4ee5\u4e0b\u306e\u56fd\u7b56\u3067\u7ba1\u7406\u3057\u307e\u3059\u3002<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>3.1\u696d\u52d9\u306e\u6e2c\u5b9a:\u5236\u5fa1\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\uff08\u4f4d\u76f8\u5236\u5fa1)<\/b><\/strong><\/h4>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(1)\u539f\u5247\u00a0<\/span>\u3053\u306e\u3088\u3046\u306b\u3001\u7a81\u5165\u96fb\u6d41\u9632\u6b62\u898f\u6a21\u306b\u3088\u308a\u76f4\u63a5\u96fb\u5727\u4f4d\u76f8\u89d2\u5ea6\u3067\u5207\u308a\u66ff\u3048\u307e\u3059\u3002 \u7406\u8ad6\u7684\u306b\u306f\u3001\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u6642\u306e\u96fb\u5727\u306e\u30d4\u30fc\u30af\u7d50\u679c\u306e\u6700\u5c0f\u7a81.<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(2)\u30a2\u30af\u30b7\u30e7\u30f3:<\/span>\u00a0Use\u00a0synchronous (point-on-wave) controllers\u00a0or smart circuit breakers to precisely close the contacts at a specific point on the voltage waveform (near the peak).<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(3)\u52b9\u679c<\/span>\u00a0\u3092\u4f4e\u6e1b\u3067\u304d\u308b\u7a81\u5165\u96fb\u6d41\u30d4\u30fc\u30af\u306e50%\u4ee5\u4e0a\u5927\u304d\u304f\u6e7f\u3057\u3001\u30ce\u30a4\u30ba\u3084\u96fb\u78c1\u6c17\u7684\u30b9\u30c8\u30ec\u30b9\u3068\u306a\u308b\u3002<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>3.2\u30c7\u30d0\u30a4\u30b9\u30ec\u30d9\u30eb\u306e\u5bfe\u7b56Remanence\u7ba1\u7406\u3084\u30b7\u30ea\u30fc\u30ba\u62b5\u6297\u5668<\/b><\/strong><\/h4>\n<h5 style=\"padding-left: 80px;\"><strong><b>3.2.1 <\/b><\/strong><strong><b>Remanence\u7ba1\u7406<\/b><\/strong><\/h5>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(1)\u539f\u5247<\/span> \u8131\u3057\u305f\u5f8c\u3001\u901a\u96fb\u3001\u30b3\u30a2\u3092\u4fdd\u7ba1\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u4e00\u90e8\u306e\u78c1\u675fremanence). \u5834\u5408\u306b\u306f&#8220;\u5bfe\u8c61\u675f&#8221;\u304b\u3089\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u96fb\u5727\u304c\u9006\u306b\u306a\u308b\u306e\u3067remanence\u65b9\u5411\u3063\u3066\u306f\u3001\u306e\u60aa\u5316\u306b\u3088\u3063\u3066\u5438\u53ce\u6392\u51fa\u91cf\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u7a81\u5165\u96fb\u6d41\u9632\u6b62. \u7a4d\u6975\u7684\u306b\u7ba1\u7406remanence\u306a\u3069\u3092\u30bc\u30ed\u306b\u306a\u308b\u3053\u3068\u3092\u77e5\u308a\u306a\u304c\u3089\u3001\u305d\u306e\u72b6\u614b\u3092\u30b9\u30a4\u30c3\u30c1\u3092\u5165\u308c\u308b\u524d\u306b)\u30a8\u30a4\u30ba\u306b\u6700\u9069\u306a\u5207\u308a\u66ff\u3048\u305f\u3002<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(2)\u52b9\u679c<\/span> \u4f4e\u4e88\u6e2c\u4e0d\u53ef\u80fd\u6027\u3068\u3001\u4f4d\u76f8\u306e\u5236\u5fa1\u3001\u6700\u9069\u306a\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u6642\u306e\u5024\u3067\u3059\u3002\u203b<\/p>\n<h5 style=\"padding-left: 80px;\"><strong><b>3.2.2<\/b><\/strong><strong><b>\u4e8b\u524d\u306b\u633f\u5165\u7528\u62b5\u6297\u5668<\/b><\/strong><\/h5>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(1)\u539f\u5247<\/span> \u524d\u306e\u30e1\u30a4\u30f3\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u9023\u7d61\u5148\u306b\u3042\u308a\u3001\u88dc\u52a9\u63a5\u70b9\u30b7\u30ea\u30fc\u30ba\u62b5\u6297\u3042\u308a\u307e\u3059\u3002 \u306e\u62b5\u6297\u3092\u5236\u9650\u3059\u308b\u6642\u306b\u306f\u521d\u671f\u96fb\u6d41\u3092\u6d41\u675f\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002 \u3057\u9045\u308c\u306e\u4e3b\u306a\u9023\u7d61\u5148\u3001\u554f\u5c4b\u3078\u306e\u6ce8\u6587\u6570\u306e\u62b5\u6297\u3067\u3059\u3002<\/p>\n<p style=\"padding-left: 120px;\"><span style=\"color: #4874cb;\">(2)\u52b9\u679c<\/span> \u7269\u7406\u7684\u306b\u5236\u9650\u3059\u308b\u6642\u306b\u306f\u521d\u671f\u96fb\u6d41\u306e\u30d4\u30fc\u30af\u3068\u3001\u975e\u5e38\u306b\u52b9\u679c\u7684\u306a\u65b9\u6cd5\u5927HV\u30c8\u30e9\u30f3\u30b9.<\/p>\n<h4 style=\"padding-left: 40px;\"><strong><b>3.3\u30b7\u30b9\u30c6\u30e0\u30c7\u30b6\u30a4\u30f3\u306b\u306f\u5bfe\u5fdc\u3067\u7a81\u5165\u96fb\u6d41\u30ea\u30df\u30c3\u30bf\u30fc\u30b9\uff06\u4fdd\u8b77\u7406\u8ad6<\/b><\/strong><\/h4>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(1)\u7a81\u5165\u96fb\u6d41\u30ea\u30df\u30c3\u30bf: <\/span>\u7279\u5225\u8a2d\u8a08\u306e\u8a98\u5c0e\u3084\u975e\u7dda\u5f62\u62b5\u6297\u30c7\u30d0\u30a4\u30b9\u3092\u4e00\u6642\u7684\u306b\u63a5\u7d9a\u3055\u308c\u308b\u56de\u8def\u3092\u6291\u5236\u3059\u308b\u3002<\/p>\n<p style=\"padding-left: 80px;\"><span style=\"color: #4874cb;\">(2)\u4fdd\u8b77\u30ea\u30ec\u30fc\u306e\u8a2d\u5b9a\u306e\u6700\u9069\u5316:<\/span> \u3092\u8abf\u6574\u3059\u308b\u9ad8\u8abf\u6ce2\u6291\u5236\u306e\u8a2d\u5b9a\u3092\u5dee\u3084\u904e\u96fb\u6d41\u7d99\u96fb\u5668\u306e\u52a9\u3051\u306b\u3088\u308a\u533a\u5225\u7a81\u5165\u96fb\u6d41(\u8c4a\u304b\u306a2\u6b21\u9ad8\u8abf\u6ce2\uff09\u3068\u7d14\u6b63\u65ad\u5c64\u6d41\u9632\u6b62\u306e\u8ff7\u60d1\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/www.lstransformer.com\/ja\/product-category\/transformer\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-7305\" src=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5.jpg\" alt=\"\" width=\"920\" height=\"498\" srcset=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5.jpg 920w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5-300x162.jpg 300w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5-768x416.jpg 768w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5-18x10.jpg 18w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/2-5-600x325.jpg 600w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/a><\/p>\n<h2><strong><b>\u7d50&amp;\u52e7\u544a<\/b><\/strong><\/h2>\n<p>\u8074\u899a\u3048\u305f\u3068\u304d\u3001\u30d0\u30b9\u3001\u30c8\u30e9\u30f3\u30b9\u306f\u5373\u6642\u306e\u539f\u56e0\u3092\u6df7\u4e71\u306b\u9665\u308c\u305f\u306e\u3067\u3042\u308b\u3002 \u3053\u308c\u306b\u3088\u308a\u7a81\u5165\u96fb\u6d41\u306f\u5f37\u3044\u304c\u3001\u4e00\u822c\u7684\u306b\u901a\u5e38\u306e\u7269\u7406\u7684\u306a\u73fe\u8c61\u3067\u3059\u3002 \u3057\u304b\u3057\u3001\u8cac\u4efb\u3042\u308b\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u53ef\u80fd\u306a\u8b58\u5225. \u30e2\u30cb\u30bf\u30fc\u306b\u8b66\u544a\u6a19\u8b58\u3002 \u5834\u5408\u306b\u306f\u9593\u9055\u3044\u5834\u5408\u3001\u307e\u305f\u306f\u7570\u5e38\u306e\u75c7\u72b6\u304c\u7d9a\u304f\u3068\u3001\u672c\u8cc7\u6599\u306e\u691c\u67fb\u3057\u3066\u3044\u307e\u3059\u3002 \u6b63\u3057\u3044\u7406\u89e3\u3068\u7ba1\u7406\u306e\u30c8\u30e9\u30f3\u30b9\u306e\u901a\u96fb\u306e\u78ba\u4fdd\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3067\u3059\u3002<\/p>\n<h2 style=\"font-weight: bold;\">\u9023\u7d61\u5148<\/h2>\n<p>\u5eec\u5c71,est\u3002 1975\u5e74\u306b\u306f\u4e2d\u56fd\u306e\u5c02\u9580\u8077\u306e\u5c02\u9580\u30e1\u30fc\u30ab\u30fc\u306e\u96fb\u529b\u5909\u5727\u5668\u53ca\u3073\u539f\u5b50\u7089\u306e\u305f\u3081\u306e50+\u308b\u3002 \u4e3b\u88fd\u54c1 <a href=\"https:\/\/www.lstransformer.com\/ja\/\">\u5358\u76f8\u30c8\u30e9\u30f3\u30b9\u3001\u4e09\u76f8\u7d76\u7e01\u5909\u5727\u5668\u3001\u96fb\u6c17\u30c8\u30e9\u30f3\u30b9\u3001\u7269\u6d41\u30c8\u30e9\u30f3\u30b9\u3001\u30b9\u30c6\u30c3\u30d7\u306e\u4e0b\u3001\u4fe1\u7528\u30ea\u30b9\u30af\u4ee5\u5916\u306e\u30ea\u30b9\u30af\u306b\u3064\u304d\u30c8\u30e9\u30f3\u30b9\u3001\u4f4e\u96fb\u5727\u30c8\u30e9\u30f3\u30b9\u3001\u9ad8\u96fb\u5727\u30c8\u30e9\u30f3\u30b9\u3001\u5236\u5fa1\u30c8\u30e9\u30f3\u30b9\u3001\u30c8\u30ed\u30a4\u30c0\u30eb\u30c8\u30e9\u30f3\u30b9\u3001R\u30b3\u30a2\u30c8\u30e9\u30f3\u30b9\u76f4\u6d41\u30a4\u30f3\u30c0\u30af\u30bf\u30fc\u3001AC\u7089\u3067\u306f\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u7089\u3001\u8ca0\u8377\u7089chokes\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u306e\u539f\u5b50\u7089\u306f\u3001\u4e2d\u9593\u4f53\u3001\u9ad8\u5468\u6ce2\u88fd\u54c1<\/a>.<\/p>\n<p>\u5f53\u793e\u306e\u96fb\u529b\u5909\u5727\u5668\u53ca\u3073\u539f\u5b50\u7089\u306b\u5e83\u304f\u4f7f\u7528\u3055\u308c\u306610\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3:\u9ad8\u901f\u9244\u9053\u3001\u5efa\u8a2d\u6a5f\u68b0\u3001\u518d\u751f\u53ef\u80fd\u30a8\u30cd\u30eb\u30ae\u30fc\u3001\u30ed\u30dc\u30c3\u30c8\u3001\u533b\u7642\u6a5f\u5668\u3001\u70ad\u9271\u7206\u767a\u306e\u9632\u6b62\u3001\u52b1\u8d77\u30b7\u30b9\u30c6\u30e0\u3001\u771f\u7a7a\u713c\u7d50(\u7089)\u3001\u4e2d\u592e\u30a8\u30a2\u30b3\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u77e5\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u539f\u5b50\u7089: <a href=\"https:\/\/www.lstransformer.com\/ja\/\">www.lstransformer.com<\/a>.<\/p>\n<p>\u5e0c\u5f97\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u306e\u30c8\u30e9\u30f3\u30b9\u3084\u539f\u5b50\u7089\u3001\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<br \/>\nWhatsApp\uff1a+86 13787095096<br \/>\n\u30e1\u30fc\u30eb:marketing@hnlsdz.com<\/p>","protected":false},"excerpt":{"rendered":"<p>A Loud &#8220;Bang&#8221; When Switching On a Transformer: Is It Damaged? Transformers are vital components in power systems, and their stable operation is crucial. When energizing a transformer after installation or maintenance, you might sometimes hear a significant humming noise or a loud &#8220;bang.&#8221; This phenomenon, possible in power operations worldwide, often raises concerns among operators: does it indicate a fault or damage to the transformer? This article delves into the root causes, helping you distinguish between a normal physical event and a potential warning sign. 1. Main Cause of the Switching Noise: Inrush Current The most common cause of the loud noise is the inrush current or magnetizing inrush [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7303,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[48],"tags":[],"class_list":["post-7302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Loud &quot;Bang&quot; When Switching On a Transformer: Is It Damaged? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD Loud Bang When Switching On a Transformer: Inrush Current, Mechanical Stress &amp; Damage Risk<\/title>\n<meta name=\"description\" content=\"A loud bang when energizing a transformer is usually magnetizing inrush, not evidence of damage. Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. This guide explains when the bang is benign and when cumulative stress matters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lstransformer.com\/ja\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Loud &quot;Bang&quot; When Switching On a Transformer: Is It Damaged? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD Loud Bang When Switching On a Transformer: Inrush Current, Mechanical Stress &amp; Damage Risk\" \/>\n<meta property=\"og:description\" content=\"A loud bang when energizing a transformer is usually magnetizing inrush, not evidence of damage. Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. This guide explains when the bang is benign and when cumulative stress matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lstransformer.com\/ja\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\/\" \/>\n<meta property=\"og:site_name\" content=\"LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-07T06:46:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/10\/\u53d8\u538b\u56681\uff08\u6d77\u5916\uff09-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"644\" \/>\n\t<meta property=\"og:image:height\" content=\"481\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"xiangligougou\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"xiangligougou\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"9\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/\"},\"author\":{\"name\":\"xiangligougou\",\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/#\\\/schema\\\/person\\\/4aa28de58bbcbc630401c966317223d3\"},\"headline\":\"A Loud &#8220;Bang&#8221; When Switching On a Transformer: Is It Damaged?\",\"datePublished\":\"2026-11-07T06:46:47+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/\"},\"wordCount\":1362,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.lstransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/\u53d8\u538b\u56681\uff08\u6d77\u5916\uff09-1.jpg\",\"articleSection\":[\"FAQ\"],\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/\",\"url\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/\",\"name\":\"A Loud \\\"Bang\\\" When Switching On a Transformer: Is It Damaged? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD Loud Bang When Switching On a Transformer: Inrush Current, Mechanical Stress & Damage Risk\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lstransformer.com\\\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.lstransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/\u53d8\u538b\u56681\uff08\u6d77\u5916\uff09-1.jpg\",\"datePublished\":\"2026-11-07T06:46:47+00:00\",\"description\":\"A loud bang when energizing a transformer is usually magnetizing inrush, not evidence of damage. 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Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. 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Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. 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