{"id":50561,"date":"2026-04-01T10:11:02","date_gmt":"2026-04-01T10:11:02","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=50561"},"modified":"2026-04-01T11:11:03","modified_gmt":"2026-04-01T11:11:03","slug":"what-is-a-three-phase-transformer","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/","title":{"rendered":"\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u304b\uff1f\u2015\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"<p>\u73fe\u4ee3\u306e\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u5b89\u5b9a\u3057\u305f\u52b9\u7387\u7684\u306a\u96fb\u5727\u5909\u63db\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u306f\u3001\u96fb\u6c17\u6280\u8853\u8005\u3084\u30b7\u30b9\u30c6\u30e0\u30a4\u30f3\u30c6\u30b0\u30ec\u30fc\u30bf\u30fc\u304c\u4e09\u76f8\u5909\u5727\u5668\u306e\u52d5\u4f5c\u539f\u7406\u3001\u69cb\u6210\u3001\u7a2e\u985e\u3092\u7406\u89e3\u3057\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u610f\u601d\u6c7a\u5b9a\u3092\u884c\u3046\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u76ee\u6b21\u3092\u5207\u308a\u66ff\u3048\u308b\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#What_Is_a_Three-phase_Transformer\" >\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Components_of_a_Three-Phase_Transformer\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u69cb\u6210\u8981\u7d20<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Types_of_Three-phase_Transformer\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u7a2e\u985e<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Core-Type_Three-Phase_Transformer\" >\u30b3\u30a2\u578b\u4e09\u76f8\u5909\u5727\u5668<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Shell-Type_Three-Phase_Transformer\" >\u30b7\u30a7\u30eb\u578b\u4e09\u76f8\u5909\u5727\u5668<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Dry-Type_Transformer\" >\u4e7e\u5f0f\u5909\u5727\u5668<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#How_Does_a_Three-phase_Transformer_Work\" >\u4e09\u76f8\u5909\u5727\u5668\u306f\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u306e\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Advantages_of_Three-Phase_Transformers\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u5229\u70b9<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Higher_Energy_Efficiency\" >\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\u306e\u5411\u4e0a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Continuous_and_Stable_Power_Output\" >\u9023\u7d9a\u7684\u3067\u5b89\u5b9a\u3057\u305f\u96fb\u529b\u51fa\u529b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Higher_Power_Handling_Capacity\" >\u3088\u308a\u9ad8\u3044\u96fb\u529b\u51e6\u7406\u80fd\u529b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Flexibility_in_System_Configuration\" >\u30b7\u30b9\u30c6\u30e0\u69cb\u6210\u306e\u67d4\u8edf\u6027<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Improved_Load_Balance\" >\u8ca0\u8377\u5206\u6563\u306e\u6539\u5584<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Lower_Installation_and_Operation_Cost\" >\u8a2d\u7f6e\u304a\u3088\u3073\u904b\u7528\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Three-Phase_Transformer_Connections\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Star_Connection\" >\u30b9\u30bf\u30fc\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Delta_Connection\" >\u30c7\u30eb\u30bf\u822a\u7a7a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Common_Three-Phase_Transformer_Connection_Types\" >\u4e00\u822c\u7684\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a\u30bf\u30a4\u30d7<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Star-Star_Connection\" >\u30b9\u30bf\u30fc\u30fb\u30b9\u30bf\u30fc\u30fb\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Delta-Delta_Connection\" >\u30c7\u30eb\u30bf\u30c7\u30eb\u30bf\u63a5\u7d9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Star-Delta_Connection\" >\u30b9\u30bf\u30fc\u30c7\u30eb\u30bf\u63a5\u7d9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Delta-Star_Connection\" >\u30c7\u30eb\u30bf\u30fb\u30b9\u30bf\u30fc\u30fb\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Three_Phase_Voltages_and_Currents\" >\u4e09\u76f8\u96fb\u5727\u3068\u96fb\u6d41<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Applications_of_Three-Phase_Transformers\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u5fdc\u7528<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#FAQ\" >\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Can_a_Three-Phase_Transformer_Be_Connected_to_Different_Voltage_Systems\" >\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u7570\u306a\u308b\u96fb\u5727\u30b7\u30b9\u30c6\u30e0\u306b\u63a5\u7d9a\u3067\u304d\u307e\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#What_Is_the_Difference_Between_Oil-filled_and_Dry-type_Transformers\" >\u6cb9\u5165\u5f0f\u5909\u5727\u5668\u3068\u4e7e\u5f0f\u5909\u5727\u5668\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#How_Do_You_Choose_the_Right_Size_Three-Phase_Transformer_for_Your_Project\" >\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u30b5\u30a4\u30ba\u306e\u4e09\u76f8\u5909\u5727\u5668\u306f\u3069\u306e\u3088\u3046\u306b\u9078\u3079\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Is_It_Better_to_Use_One_Three-Phase_Transformer_or_Three_Single-Phase_Units\" >\u4e09\u76f8\u5909\u5727\u5668\u30921\u53f0\u4f7f\u7528\u3059\u308b\u306e\u3068\u3001\u5358\u76f8\u5909\u5727\u5668\u30923\u53f0\u4f7f\u7528\u3059\u308b\u306e\u3068\u3067\u306f\u3001\u3069\u3061\u3089\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/#Final_Thought\" >\u6700\u5f8c\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_a_Three-phase_Transformer\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50564\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/What-Is-a-Three-phase-Transformer.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u304b\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/What-Is-a-Three-phase-Transformer.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/What-Is-a-Three-phase-Transformer-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/What-Is-a-Three-phase-Transformer-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/What-Is-a-Three-phase-Transformer-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u4e09\u76f8\u4ea4\u6d41\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u30662\u3064\u4ee5\u4e0a\u306e\u56de\u8def\u9593\u3067\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u4f1d\u9001\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u96fb\u6c17\u6a5f\u5668\u3067\u3059\u3002\u305d\u306e\u539f\u7406\u306f\u4e3b\u306b\u96fb\u78c1\u8a98\u5c0e\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u78c1\u5834\u3092\u4ecb\u3057\u3066\u4e00\u6b21\u5dfb\u7dda\u304b\u3089\u4e8c\u6b21\u5dfb\u7dda\u3078\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u4f1d\u9054\u3055\u308c\u3001\u96fb\u5727\u304c\u6607\u5727\u307e\u305f\u306f\u964d\u5727\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u4e92\u3044\u306b120\u00b0\u4f4d\u76f8\u304c\u305a\u308c\u305f3\u3064\u306e\u4ea4\u6d41\u96fb\u6d41\u3092\u540c\u6642\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u767a\u96fb\u3001\u9001\u96fb\u3001\u914d\u96fb\u3001\u7523\u696d\u7528\u96fb\u529b\u6d88\u8cbb\u306a\u3069\u3001\u5e45\u5e83\u3044\u5206\u91ce\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Components_of_a_Three-Phase_Transformer\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u69cb\u6210\u8981\u7d20<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50567\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Components-of-a-Three-Phase-Transformer.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306e\u69cb\u6210\u8981\u7d20\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Components-of-a-Three-Phase-Transformer.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Components-of-a-Three-Phase-Transformer-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Components-of-a-Three-Phase-Transformer-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Components-of-a-Three-Phase-Transformer-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><strong>\u7d76\u7e01<\/strong>\u4e3b\u306b\u5dfb\u7dda\u3068\u9244\u5fc3\u3092\u7d76\u7e01\u3057\u3001\u77ed\u7d61\u3092\u9632\u6b62\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u7d76\u7e01\u5a92\u4f53\u3068\u3057\u3066\u306f\u3001\u4e3b\u306b\u6cb9\u3001\u30ac\u30b9\u3001\u7d19\u306a\u3069\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002.<\/p>\n<p><strong>\u30b3\u30a2<\/strong>\u30b3\u30a2\u306f\u901a\u5e38\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u640d\u5931\u3092\u4f4e\u6e1b\u3057\u3001\u78c1\u675f\u306e\u7d4c\u8def\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u7a4d\u5c64\u30b1\u30a4\u7d20\u92fc\u677f\u3067\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30b3\u30a2\u69cb\u9020\u306f\u3001\u30b3\u30a2\u578b\u69cb\u9020\u3068\u30b7\u30a7\u30eb\u578b\u69cb\u9020\u306b\u5206\u3051\u3089\u308c\u307e\u3059\u3002.<\/p>\n<p><strong>\u5dfb\u304d\u4e0a\u3052<\/strong>\u5dfb\u7dda\u306f\u901a\u5e38\u3001\u9285\u307e\u305f\u306f\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3067\u4f5c\u3089\u308c\u3066\u304a\u308a\u3001\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u5165\u51fa\u529b\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5dfb\u6570\u6bd4\u306b\u3088\u3063\u3066\u96fb\u5727\u5909\u63db\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002.<\/p>\n<p><strong>\u30bf\u30f3\u30af<\/strong>\u7d76\u7e01\u6cb9\u3092\u8caf\u8535\u3057\u3001\u5909\u5727\u5668\u306e\u5dfb\u7dda\u3084\u9244\u5fc3\u3092\u5916\u90e8\u304b\u3089\u306e\u5f71\u97ff\u304b\u3089\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p><strong>\u4e00\u606f\u3064\u304f\u6642\u9593\uff1a <\/strong>\u7a7a\u6c17\u306e\u51fa\u5165\u308a\u3092\u53ef\u80fd\u306b\u3057\u3066\u5727\u529b\u3092\u5747\u4e00\u5316\u3059\u308b\u3068\u540c\u6642\u306b\u3001\u30b7\u30ea\u30ab\u30b2\u30eb\u88fd\u306e\u901a\u6c17\u53e3\u304c\u5909\u5727\u5668\u3078\u306e\u6e7f\u6c17\u306e\u4fb5\u5165\u3092\u9632\u304e\u307e\u3059\u3002.<\/p>\n<p><strong>\u51b7\u5374\u30b7\u30b9\u30c6\u30e0<\/strong>\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u51b7\u5374\u6db2\u3092\u6c34\/\u6cb9\u7ba1\u306b\u5faa\u74b0\u3055\u305b\u3066\u6cb9\u304b\u3089\u71b1\u3092\u653e\u6563\u3055\u305b\u3001\u305d\u306e\u71b1\u3092\u7089\u5fc3\u3068\u5dfb\u7dda\u306b\u623b\u3057\u307e\u3059\u3002\u4e3b\u306a\u51b7\u5374\u65b9\u5f0f\u306f\u3001ONAN\u3001ONAF\u3001AN\u3001AF\u3067\u3059\u3002.<\/p>\n<p><strong>\u6e29\u5ea6\u30bb\u30f3\u30b5\u30fc<\/strong>\u3053\u308c\u3089\u306e\u30bb\u30f3\u30b5\u30fc\u306f\u3001\u5dfb\u7dda\u6e29\u5ea6\u3068\u6cb9\u6e29\u3092\u76e3\u8996\u3057\u3001\u5b89\u5168\u306a\u904b\u8ee2\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Three-phase_Transformer\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u7a2e\u985e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50568\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Types-of-Three-phase-Transformer.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306e\u7a2e\u985e\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Types-of-Three-phase-Transformer.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Types-of-Three-phase-Transformer-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Types-of-Three-phase-Transformer-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Types-of-Three-phase-Transformer-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u69cb\u9020\u3001\u5dfb\u7dda\u63a5\u7d9a\u3001\u51b7\u5374\u65b9\u5f0f\u3001\u7528\u9014\u306b\u3088\u3063\u3066\u5206\u985e\u3067\u304d\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u5909\u5727\u5668\u3092\u9078\u629e\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u4e09\u76f8\u5909\u5727\u5668\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Core-Type_Three-Phase_Transformer\"><\/span>\u30b3\u30a2\u578b\u4e09\u76f8\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30b3\u30a2\u306f3\u3064\u306e\u811a\u90e8\u304b\u3089\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u6b21\u5dfb\u7dda\u3068\u4e8c\u6b21\u5dfb\u7dda\u306f\u5404\u811a\u90e8\u306b\u5747\u7b49\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e09\u76f8\u78c1\u675f\u306f\u5916\u5074\u306e\u811a\u90e8\u3092\u901a\u3063\u3066\u5171\u901a\u306e\u5e30\u9084\u7d4c\u8def\u3092\u5171\u6709\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u9ad8\u96fb\u5727\u914d\u96fb\u306b\u304a\u3051\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u8a2d\u8a08\u3067\u3042\u308a\u3001\u653e\u71b1\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306b\u3082\u512a\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Shell-Type_Three-Phase_Transformer\"><\/span>\u30b7\u30a7\u30eb\u578b\u4e09\u76f8\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30b7\u30a7\u30eb\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u5dfb\u7dda\u3092\u56f2\u3080\u30b3\u30a2\u3092\u5099\u3048\u3066\u3044\u308b\u3002\u6a5f\u68b0\u7684\u5f37\u5ea6\u3068\u78c1\u675f\u5206\u5e03\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u3001\u591a\u304f\u306e\u5834\u5408\u30015\u811a\u69cb\u9020\u304c\u63a1\u7528\u3055\u308c\u308b\u3002.<\/p>\n<p>\u3055\u3089\u306b\u3001\u30b3\u30a2\u306e\u5927\u90e8\u5206\u304c\u51b7\u5374\u5668\u306b\u63a5\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u51b7\u5374\u7279\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002\u52a0\u3048\u3066\u3001\u77ed\u7d61\u62b5\u6297\u304c\u9ad8\u304f\u3001\u6f0f\u6d29\u78c1\u675f\u3082\u4f4e\u6e1b\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u9ad8\u8ca0\u8377\u306e\u7523\u696d\u30b7\u30b9\u30c6\u30e0\u3084\u4f4e\u96fb\u5727\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u9069\u7528\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dry-Type_Transformer\"><\/span>\u4e7e\u5f0f\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e7e\u5f0f\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u305d\u306e\u51b7\u5374\u65b9\u6cd5\u3068\u7d76\u7e01\u65b9\u6cd5\u306b\u3088\u3063\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002\u5dfb\u7dda\u306e\u7d76\u7e01\u306b\u306f\u3001\u7a7a\u6c17\u307e\u305f\u306f\u56fa\u4f53\uff08\u6a39\u8102\u307e\u305f\u306f\u30ef\u30cb\u30b9\uff09\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30bf\u30a4\u30d7\u3068\u3057\u3066\u306f\u3001\u92f3\u9020\u6a39\u8102\u5909\u5727\u5668\u3068\u771f\u7a7a\u52a0\u5727\u542b\u6d78\uff08VPI\uff09\u5909\u5727\u5668\u304c\u3042\u308a\u307e\u3059\u3002\u51b7\u5374\u65b9\u6cd5\u306f\u3001\u81ea\u7136\u5bfe\u6d41\u307e\u305f\u306f\u5f37\u5236\u7a7a\u51b7\u306e\u3044\u305a\u308c\u304b\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u4e7e\u5f0f\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u6cb9\u6f0f\u308c\u3084\u706b\u707d\u306e\u5371\u967a\u6027\u304c\u306a\u304f\u3001\u74b0\u5883\u306b\u512a\u3057\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u624b\u9593\u3082\u5c11\u306a\u3044\u305f\u3081\u3001\u5c4b\u5185\u3084\u5b89\u5168\u6027\u304c\u91cd\u8996\u3055\u308c\u308b\u74b0\u5883\u306b\u6700\u9069\u3067\u3059\u3002.<\/p>\n<p>\u6cb9\u5165\u5909\u5727\u5668\u3068\u6bd4\u8f03\u3059\u308b\u3068\u3001\u4e7e\u5f0f\u5909\u5727\u5668\u306f\u51b7\u5374\u52b9\u7387\u304c\u4f4e\u304f\u3001\u8d85\u9ad8\u51fa\u529b\u7528\u9014\u3078\u306e\u5bfe\u5fdc\u80fd\u529b\u304c\u9650\u3089\u308c\u3066\u3044\u308b\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Does_a_Three-phase_Transformer_Work\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u306e\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50569\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/How-Does-a-Three-phase-Transformer-Work.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306f\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u306e\u304b\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/How-Does-a-Three-phase-Transformer-Work.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/How-Does-a-Three-phase-Transformer-Work-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/How-Does-a-Three-phase-Transformer-Work-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/How-Does-a-Three-phase-Transformer-Work-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u96fb\u78c1\u8a98\u5c0e\u306e\u539f\u7406\u306b\u57fa\u3065\u3044\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u4e09\u76f8\u4ea4\u6d41\u304c\u4e00\u6b21\u5dfb\u7dda\u3092\u901a\u904e\u3059\u308b\u3068\u3001\u5404\u76f8\u306b\u4ea4\u6d41\u96fb\u529b\u304c\u6d41\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u96fb\u6d41\u306f\u4e92\u3044\u306b120\u00b0\u4f4d\u76f8\u304c\u305a\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u305d\u3057\u3066\u3001\u96fb\u6d41\u306f\u5909\u5727\u5668\u306e\u30b3\u30a2\u306b\u4ea4\u6d41\u78c1\u675f\u3092\u767a\u751f\u3055\u305b\u307e\u3059\u3002\u3053\u306e\u78c1\u675f\u306f\u4e8c\u6b21\u5dfb\u7dda\u306b\u96fb\u5727\u3092\u8a98\u5c0e\u3057\u3001\u76f4\u63a5\u7684\u306a\u96fb\u6c17\u7684\u63a5\u89e6\u306a\u3057\u306b\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u5165\u529b\u304b\u3089\u51fa\u529b\u3078\u3068\u4f1d\u9054\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u96fb\u5727\u30ec\u30d9\u30eb\u306f\u3001\u4e00\u6b21\u5dfb\u7dda\u3068\u4e8c\u6b21\u5dfb\u7dda\u306e\u5dfb\u6570\u6bd4\u306b\u3088\u3063\u3066\u5909\u5316\u3057\u307e\u3059\u3002\u4e8c\u6b21\u5dfb\u7dda\u306e\u5dfb\u6570\u304c\u591a\u3044\u5834\u5408\u306f\u6607\u5727\u5909\u5727\u5668\u3001\u5c11\u306a\u3044\u5834\u5408\u306f\u964d\u5727\u5909\u5727\u5668\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u56de\u8ee2\u78c1\u754c\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u305d\u306e\u7dcf\u78c1\u675f\u306f\u307b\u307c\u4e00\u5b9a\u3067\u3001120\u00b0\u5909\u5316\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u3088\u308a\u6ed1\u3089\u304b\u3067\u9023\u7d9a\u7684\u306a\u96fb\u529b\u51fa\u529b\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u632f\u52d5\u3068\u640d\u5931\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u5358\u76f8\u5909\u5727\u5668\/\">\u5358\u76f8\u5909\u5727\u5668<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Advantages_of_Three-Phase_Transformers\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u5229\u70b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50572\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Advantages-of-Three-Phase-Transformers.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306e\u5229\u70b9\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Advantages-of-Three-Phase-Transformers.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Advantages-of-Three-Phase-Transformers-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Advantages-of-Three-Phase-Transformers-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Advantages-of-Three-Phase-Transformers-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Higher_Energy_Efficiency\"><\/span>\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\u306e\u5411\u4e0a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u96fb\u529b\u4f1d\u9001\u304c\u3088\u308a\u5b89\u5b9a\u3057\u3066\u304a\u308a\u3001\u76ee\u7acb\u3063\u305f\u5909\u52d5\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u4f1d\u9001\u304c\u3088\u308a\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u52b9\u7387\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u904b\u8ee2\u6642\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u640d\u5931\u3082\u5c11\u306a\u304f\u3001\u5927\u898f\u6a21\u304b\u3064\u9023\u7d9a\u904b\u8ee2\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Continuous_and_Stable_Power_Output\"><\/span>\u9023\u7d9a\u7684\u3067\u5b89\u5b9a\u3057\u305f\u96fb\u529b\u51fa\u529b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>120\u00b0\u306e\u4f4d\u76f8\u30b7\u30d5\u30c8\u306b\u3088\u308a\u3001\u30bc\u30ed\u70b9\u306e\u306a\u3044\u5b89\u5b9a\u3057\u305f\u96fb\u529b\u4f9b\u7d66\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002\u4e09\u76f8\u5909\u5727\u5668\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u96fb\u5727\u5909\u52d5\u3092\u4f4e\u6e1b\u3057\u3001\u9ad8\u611f\u5ea6\u6a5f\u5668\u3084\u91cd\u91cf\u6a5f\u5668\u306e\u6027\u80fd\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u3053\u308c\u306b\u3088\u308a\u904b\u8ee2\u4e2d\u65ad\u306e\u30ea\u30b9\u30af\u3082\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Higher_Power_Handling_Capacity\"><\/span>\u3088\u308a\u9ad8\u3044\u96fb\u529b\u51e6\u7406\u80fd\u529b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u9ad8\u8ca0\u8377\u7528\u9014\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5927\u304d\u306a\u96fb\u6c17\u8ca0\u8377\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u3001\u9023\u7d9a\u8ca0\u8377\u6761\u4ef6\u4e0b\u3067\u3082\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u52d5\u4f5c\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u9ad8\u51fa\u529b\u306e\u7523\u696d\u6a5f\u5668\u306b\u3082\u5bfe\u5fdc\u53ef\u80fd\u3067\u3059\u3002\u88fd\u9020\u696d\u3084\u30a8\u30cd\u30eb\u30ae\u30fc\u7523\u696d\u306b\u3068\u3063\u3066\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u8a2d\u5099\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Flexibility_in_System_Configuration\"><\/span>\u30b7\u30b9\u30c6\u30e0\u69cb\u6210\u306e\u67d4\u8edf\u6027<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u3067\u306f\u3001\u30b9\u30bf\u30fc\u7d50\u7dda\u3001\u30c7\u30eb\u30bf\u7d50\u7dda\u3001\u304a\u3088\u3073\u305d\u308c\u3089\u306e\u7d44\u307f\u5408\u308f\u305b\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u63a5\u7d9a\u65b9\u5f0f\u3092\u63a1\u7528\u3067\u304d\u307e\u3059\u3002\u7570\u306a\u308b\u63a5\u7d9a\u65b9\u6cd5\u306b\u3088\u308a\u3001\u591a\u69d8\u306a\u30b7\u30b9\u30c6\u30e0\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u67d4\u8edf\u306a\u69cb\u6210\u306b\u3088\u308a\u3001\u3055\u307e\u3056\u307e\u306a\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306b\u7d71\u5408\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u96fb\u5727\u304a\u3088\u3073\u63a5\u5730\u8981\u4ef6\u306b\u3082\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Improved_Load_Balance\"><\/span>\u8ca0\u8377\u5206\u6563\u306e\u6539\u5584<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u96fb\u529b\u30923\u3064\u306e\u76f8\u306b\u5747\u7b49\u306b\u5206\u914d\u3059\u308b\u3053\u3068\u3067\u3001\u5358\u76f8\u904e\u8ca0\u8377\u306e\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027\u304c\u5411\u4e0a\u3057\u3001\u6a5f\u5668\u306e\u5bff\u547d\u3082\u5ef6\u3073\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Lower_Installation_and_Operation_Cost\"><\/span>\u8a2d\u7f6e\u304a\u3088\u3073\u904b\u7528\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u9244\u5fc3\u3001\u5dfb\u7dda\u3001\u7b50\u4f53\u306e\u6750\u6599\u4f7f\u7528\u91cf\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002\u5909\u5727\u5668\u30d0\u30f3\u30af\u3068\u6bd4\u8f03\u3057\u3066\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u8a2d\u7f6e\u306e\u8907\u96d1\u3055\u3068\u30b3\u30b9\u30c8\u304c\u4f4e\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3082\u5c11\u306a\u304f\u3066\u6e08\u307f\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Three-Phase_Transformer_Connections\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50570\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Transformer-Connections.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Transformer-Connections.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Transformer-Connections-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Transformer-Connections-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Transformer-Connections-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a\u3068\u306f\u3001\u4e3b\u306b\u4e00\u6b21\u5dfb\u7dda\u3068\u4e8c\u6b21\u5dfb\u7dda\u9593\u306e\u96fb\u6c17\u7684\u306a\u63a5\u7d9a\u3092\u6307\u3057\u307e\u3059\u3002\u63a5\u7d9a\u65b9\u6cd5\u306e\u9055\u3044\u306f\u3001\u96fb\u5727\u3068\u96fb\u6d41\u30ec\u30d9\u30eb\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u63a5\u5730\u4fdd\u8b77\u3001\u304a\u3088\u3073\u95a2\u9023\u30b7\u30b9\u30c6\u30e0\u306b\u76f4\u63a5\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Star_Connection\"><\/span>\u30b9\u30bf\u30fc\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30b9\u30bf\u30fc\u7d50\u7dda\u306f\u30014\u3064\u306e\u7aef\u5b50\u30683\u3064\u306e\u5dfb\u7dda\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059\u30023\u3064\u306e\u5dfb\u7dda\u306f\u4e09\u76f8\u56de\u8def\u3092\u5f62\u6210\u3057\u307e\u3059\u3002\u5404\u4e09\u76f8\u306e\u4e00\u65b9\u306e\u7aef\u5b50\u306f\u30014\u756a\u76ee\u306e\u7aef\u5b50\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u30024\u756a\u76ee\u306e\u7aef\u5b50\u306f\u5171\u901a\u306e\u4e2d\u6027\u70b9\u3067\u3059\u3002\u3053\u306e\u7d50\u7dda\u65b9\u5f0f\u3067\u306f\u5404\u5dfb\u7dda\u306b\u4f4e\u96fb\u5727\u304c\u304b\u304b\u308b\u305f\u3081\u3001\u7d76\u7e01\u8981\u4ef6\u304c\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u63a5\u7d9a\u65b9\u6cd5\u306f\u9ad8\u96fb\u5727\u7528\u9014\u306b\u9069\u3057\u3066\u304a\u308a\u3001\u5358\u76f8\u304a\u3088\u3073\u4e09\u76f8\u8ca0\u8377\u3078\u306e\u96fb\u529b\u4f9b\u7d66\u304c\u53ef\u80fd\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u8ca0\u8377\u306e\u4e0d\u5747\u8861\u306b\u654f\u611f\u3067\u3042\u308b\u305f\u3081\u3001\u5b89\u5b9a\u3057\u305f\u52d5\u4f5c\u306e\u305f\u3081\u306b\u306f\u63a5\u5730\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Delta_Connection\"><\/span>\u30c7\u30eb\u30bf\u822a\u7a7a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30eb\u30bf\u7d50\u7dda\u306f\u30013\u3064\u306e\u5dfb\u7dda\u3092\u7aef\u304b\u3089\u7aef\u307e\u3067\u63a5\u7d9a\u3057\u3066\u5f62\u6210\u3055\u308c\u308b\u9589\u56de\u8def\u3067\u3059\u3002\u3053\u306e\u63a5\u7d9a\u65b9\u6cd5\u3067\u306f\u4e2d\u6027\u70b9\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u4e0d\u5e73\u8861\u8ca0\u8377\u3092\u52b9\u679c\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u3055\u3089\u306b\u30011\u3064\u306e\u76f8\u304c\u6545\u969c\u3057\u3066\u3082\u56de\u8def\u306f\u9023\u7d9a\u904b\u8ee2\u304c\u53ef\u80fd\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u3088\u308a\u9ad8\u3044\u7d76\u7e01\u6027\u80fd\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u6700\u3082\u91cd\u8981\u306a\u306e\u306f\u3001\u56de\u8def\u3092\u6539\u9020\u3057\u306a\u3044\u9650\u308a\u3001\u5358\u76f8\u8ca0\u8377\u306b\u76f4\u63a5\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Common_Three-Phase_Transformer_Connection_Types\"><\/span>\u4e00\u822c\u7684\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u63a5\u7d9a\u30bf\u30a4\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"Star-Star_Connection\"><\/span>\u30b9\u30bf\u30fc\u30fb\u30b9\u30bf\u30fc\u30fb\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e00\u6b21\u5074\u3068\u4e8c\u6b21\u5074\u306f\u3069\u3061\u3089\u3082\u30b9\u30bf\u30fc\u7d50\u7dda\u65b9\u5f0f\u3067\u3059\u3002\u307e\u305f\u3001\u5404\u5074\u306b\u4e2d\u6027\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u63a5\u7d9a\u65b9\u5f0f\u306f\u9ad8\u96fb\u5727\u9001\u96fb\u3067\u4e00\u822c\u7684\u306b\u7528\u3044\u3089\u308c\u307e\u3059\u304c\u3001\u4e0d\u5b89\u5b9a\u6027\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u306f\u4e2d\u6027\u70b9\u306e\u63a5\u5730\u3092\u614e\u91cd\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u65b9\u5f0f\u306f\u9001\u96fb\u30b7\u30b9\u30c6\u30e0\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Delta-Delta_Connection\"><\/span>\u30c7\u30eb\u30bf\u30c7\u30eb\u30bf\u63a5\u7d9a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u3053\u306e\u63a5\u7d9a\u65b9\u6cd5\u306f\u975e\u5e38\u306b\u4fe1\u983c\u6027\u304c\u9ad8\u3044\u3082\u306e\u306e\u3001\u4e2d\u6027\u70b9\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u4e0d\u5e73\u8861\u8ca0\u8377\u306b\u5bfe\u3057\u3066\u3082\u512a\u308c\u305f\u6027\u80fd\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u7523\u696d\u30b7\u30b9\u30c6\u30e0\u306e\u9ad8\u8ca0\u8377\u30e2\u30fc\u30bf\u30fc\u306b\u3082\u9069\u7528\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Star-Delta_Connection\"><\/span>\u30b9\u30bf\u30fc\u30c7\u30eb\u30bf\u63a5\u7d9a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e00\u6b21\u5074\u306f\u30b9\u30bf\u30fc\u7d50\u7dda\u3001\u4e8c\u6b21\u5074\u306f\u30c7\u30eb\u30bf\u7d50\u7dda\u3067\u3059\u3002\u3053\u306e\u7d50\u7dda\u65b9\u5f0f\u306f\u96fb\u5727\u964d\u4e0b\u7528\u9014\u306b\u3088\u304f\u7528\u3044\u3089\u308c\u3001\u91cd\u8ca0\u8377\u306e\u7523\u696d\u7528\u9014\u306b\u3082\u5341\u5206\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u5de5\u5834\u3084\u30e2\u30fc\u30bf\u30fc\u8ca0\u8377\u306a\u3069\u3078\u306e\u9069\u7528\u304c\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Delta-Star_Connection\"><\/span>\u30c7\u30eb\u30bf\u30fb\u30b9\u30bf\u30fc\u30fb\u30b3\u30cd\u30af\u30b7\u30e7\u30f3<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e00\u6b21\u5074\u306f\u30c7\u30eb\u30bf\u7d50\u7dda\u3001\u4e8c\u6b21\u5074\u306f\u30b9\u30bf\u30fc\u7d50\u7dda\u3067\u3059\u3002\u4e8c\u6b21\u5074\u306b\u306f\u4f7f\u7528\u53ef\u80fd\u306a\u4e2d\u6027\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u63a5\u7d9a\u65b9\u6cd5\u306f\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u69cb\u6210\u3067\u3059\u3002\u901a\u5e38\u3001\u96fb\u5727\u3092\u6607\u5727\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u5b89\u5b9a\u3057\u305f\u51fa\u529b\u96fb\u5727\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u914d\u96fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3084\u5546\u696d\/\u7523\u696d\u7528\u96fb\u6e90\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u7528\u3067\u304d\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Three_Phase_Voltages_and_Currents\"><\/span>\u4e09\u76f8\u96fb\u5727\u3068\u96fb\u6d41<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50576\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Voltages-and-Currents.jpg\" alt=\"\u4e09\u76f8\u96fb\u5727\u3068\u96fb\u6d41\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Voltages-and-Currents.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Voltages-and-Currents-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Voltages-and-Currents-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Three-Phase-Voltages-and-Currents-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u3067\u306f\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306f\u4e3b\u306b\u5dfb\u7dda\u306e\u63a5\u7d9a\u65b9\u6cd5\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u3092\u6b63\u3057\u304f\u8a2d\u8a08\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u76f8\u96fb\u5727(VP)\/\u76f8\u96fb\u6d41(IP)\u3068\u7dda\u9593\u96fb\u5727(VL)\/\u7dda\u9593\u96fb\u6d41(IL)\u306e\u95a2\u4fc2\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002.<\/p>\n<p>\u901a\u5e38\u3001\u30b9\u30bf\u30fc\u7d50\u7dda\u3067\u306f\u3001\u7dda\u9593\u96fb\u5727\u306f\u76f8\u96fb\u5727\u306e\u221a3\u500d\u3001\u7dda\u9593\u96fb\u6d41\u306f\u76f8\u96fb\u6d41\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u3002\u5b9f\u7528\u4e0a\u3001\u3053\u306e\u7d50\u7dda\u65b9\u5f0f\u306f\u9ad8\u96fb\u5727\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u4e2d\u6027\u70b9\u304c\u3042\u308b\u305f\u3081\u3001\u63a5\u5730\u3084\u6df7\u5408\u8ca0\u8377\u69cb\u6210\u304c\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<p>\u30c7\u30eb\u30bf\u7d50\u7dda\u3067\u306f\u3001\u7dda\u9593\u96fb\u5727\u306f\u76f8\u96fb\u5727\u3068\u7b49\u3057\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u7dda\u9593\u96fb\u6d41\u306f\u76f8\u96fb\u6d41\u306e\u221a3\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u7d50\u7dda\u65b9\u5f0f\u306f\u3001\u5927\u96fb\u6d41\u304b\u3064\u4f4e\u96fb\u5727\u306e\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Applications_of_Three-Phase_Transformers\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u5fdc\u7528<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50573\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Applications-of-Three-Phase-Transformers.jpg\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\u306e\u5fdc\u7528\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Applications-of-Three-Phase-Transformers.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Applications-of-Three-Phase-Transformers-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Applications-of-Three-Phase-Transformers-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Applications-of-Three-Phase-Transformers-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u73fe\u4ee3\u306e\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u52b9\u7387\u7684\u306a\u96fb\u529b\u4f1d\u9001\u3001\u914d\u96fb\u3001\u5229\u7528\u3092\u5b9f\u73fe\u3059\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u591a\u304f\u306e\u7523\u696d\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u6a5f\u5668\u3068\u306a\u3063\u3066\u3044\u308b\u3002.<\/p>\n<p><strong>\u767a\u96fb\u3068\u9001\u96fb<\/strong>\u767a\u96fb\u6240\u3067\u306f\u3001\u9577\u8ddd\u96e2\u9001\u96fb\u306e\u305f\u3081\u306b\u96fb\u5727\u3092\u6607\u5727\u3059\u308b\u305f\u3081\u306b\u4e09\u76f8\u5909\u5727\u5668\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u30ad\u30aa\u30b9\u30af\u5909\u96fb\u6240\/\">\u5909\u96fb\u6240<\/a> \u5b89\u5168\u306b\u96fb\u5727\u3092\u5206\u914d\u3057\u3001\u964d\u5727\u3059\u308b\u3002.<\/p>\n<p><strong>\u5de5\u696d\u88fd\u9020\u65bd\u8a2d<\/strong>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u30e2\u30fc\u30bf\u30fc\u3001\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u3001\u30dd\u30f3\u30d7\u306a\u3069\u306e\u9ad8\u8ca0\u8377\u6a5f\u5668\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p><strong>\u518d\u751f\u53ef\u80fd\u30a8\u30cd\u30eb\u30ae\u30fc\u30b7\u30b9\u30c6\u30e0<\/strong>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u592a\u967d\u5149\u767a\u96fb\u6240\u3084\u767a\u96fb\u6240\u306b\u9069\u7528\u3067\u304d\u307e\u3059\u3002\u96fb\u5727\u3092\u7cfb\u7d71\u9700\u8981\u306b\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u96fb\u529b\u54c1\u8cea\u3068\u5b89\u5b9a\u6027\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Can_a_Three-Phase_Transformer_Be_Connected_to_Different_Voltage_Systems\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u7570\u306a\u308b\u96fb\u5727\u30b7\u30b9\u30c6\u30e0\u306b\u63a5\u7d9a\u3067\u304d\u307e\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u306f\u3044\u3002\u305f\u3060\u3057\u3001\u7570\u306a\u308b\u96fb\u5727\u306b\u5408\u308f\u305b\u3066\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u5dfb\u6570\u6bd4\u3092\u5229\u7528\u3057\u3066\u96fb\u5727\u30ec\u30d9\u30eb\u3092\u6607\u5727\/\u964d\u5727\u3067\u304d\u307e\u3059\u3002\u7570\u306a\u308b\u63a5\u7d9a\u65b9\u5f0f\u306f\u3001\u7570\u306a\u308b\u30b7\u30b9\u30c6\u30e0\u96fb\u5727\u3084\u63a5\u5730\u8981\u4ef6\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u30cb\u30fc\u30ba\u306b\u5408\u308f\u305b\u3066\u96fb\u5727\u3092\u8abf\u6574\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_Is_the_Difference_Between_Oil-filled_and_Dry-type_Transformers\"><\/span>\u6cb9\u5165\u5f0f\u5909\u5727\u5668\u3068\u4e7e\u5f0f\u5909\u5727\u5668\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6cb9\u5165\u5909\u5727\u5668\u3068\u4e7e\u5f0f\u5909\u5727\u5668\u306e\u4e3b\u306a\u9055\u3044\u306f\u3001\u51b7\u5374\u65b9\u6cd5\u3001\u5b89\u5168\u6027\u3001\u304a\u3088\u3073\u7528\u9014\u306b\u3042\u308b\u3002.<\/p>\n<p>\u6cb9\u5165\u5909\u5727\u5668\u306f\u4e3b\u306b\u7d76\u7e01\u6cb9\u3092\u7528\u3044\u3066\u7d76\u7e01\u3068\u51b7\u5374\u3092\u884c\u3044\u307e\u3059\u304c\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u624b\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u6cb9\u6f0f\u308c\u3084\u706b\u707d\u306e\u30ea\u30b9\u30af\u3082\u3042\u308a\u307e\u3059\u3002\u5c4b\u5916\u3084\u7523\u696d\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u4e7e\u5f0f\u5909\u5727\u5668\u306f\u3001\u7a7a\u6c17\u307e\u305f\u306f\u56fa\u4f53\u7d76\u7e01\u4f53\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u5b89\u5168\u6027\u304c\u9ad8\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u624b\u9593\u3082\u5c11\u306a\u304f\u3066\u6e08\u307f\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u901a\u5e38\u306f\u5c4b\u5185\u3084\u9ad8\u3044\u5b89\u5168\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u74b0\u5883\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_Do_You_Choose_the_Right_Size_Three-Phase_Transformer_for_Your_Project\"><\/span>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u3057\u305f\u30b5\u30a4\u30ba\u306e\u4e09\u76f8\u5909\u5727\u5668\u306f\u3069\u306e\u3088\u3046\u306b\u9078\u3079\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u9069\u5207\u306a\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b\u306b\u306f\u3001\u5909\u5727\u5668\u306e\u5bb9\u91cf\u3092\u8ca0\u8377\u9700\u8981\u306b\u5408\u308f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u6a5f\u5668\u306e\u96fb\u529b\uff08kW\uff09\u3092\u8a08\u7b97\u3057\u3001\u6b21\u306b\u305d\u306e\u96fb\u529b\u3092kVA\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u5c06\u6765\u306e\u62e1\u5f35\u6642\u306b\u904e\u8ca0\u8377\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u300120\uff5e30%\u306e\u4f59\u88d5\u5206\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u6b21\u306b\u3001\u4e00\u6b21\u96fb\u5727\u3068\u4e8c\u6b21\u96fb\u5727\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u5408\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30e2\u30fc\u30bf\u30fc\u3084\u30c9\u30e9\u30a4\u30d6\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u3088\u308a\u9ad8\u3044\u5bb9\u91cf\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u8a2d\u7f6e\u74b0\u5883\u306b\u57fa\u3065\u3044\u3066\u9069\u5207\u306a\u30b5\u30a4\u30ba\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_It_Better_to_Use_One_Three-Phase_Transformer_or_Three_Single-Phase_Units\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u30921\u53f0\u4f7f\u7528\u3059\u308b\u306e\u3068\u3001\u5358\u76f8\u5909\u5727\u5668\u30923\u53f0\u4f7f\u7528\u3059\u308b\u306e\u3068\u3067\u306f\u3001\u3069\u3061\u3089\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u307b\u3068\u3093\u3069\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u3066\u3001\u4e09\u76f8\u5909\u5727\u5668\u306e\u65b9\u304c\u4e00\u822c\u7684\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002\u3088\u308a\u30b3\u30f3\u30d1\u30af\u30c8\u3067\u3001\u30b3\u30b9\u30c8\u52b9\u7387\u304c\u9ad8\u304f\u3001\u52b9\u7387\u3082\u512a\u308c\u3066\u304a\u308a\u3001\u8a2d\u7f6e\u8cbb\u7528\u3068\u904b\u7528\u30b3\u30b9\u30c8\u3082\u4f4e\u304f\u6291\u3048\u3089\u308c\u307e\u3059\u3002.<\/p>\n<p>\u4fe1\u983c\u6027\u3068\u67d4\u8edf\u6027\u3092\u91cd\u8996\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u5909\u5727\u5668\u30d0\u30f3\u30af\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u5909\u5727\u5668\u304c\u6545\u969c\u3057\u3066\u3082\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u7a3c\u50cd\u3092\u7d99\u7d9a\u3067\u304d\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Final_Thought\"><\/span>\u6700\u5f8c\u306b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50571\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Final-Thought.jpg\" alt=\"\u6700\u5f8c\u306b\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Final-Thought.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Final-Thought-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Final-Thought-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/04\/Final-Thought-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p>KDM\u306f\u96fb\u6c17\u7b50\u4f53\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306b\u304a\u3044\u3066\u9577\u5e74\u306e\u7d4c\u9a13\u3092\u6301\u3064\u30e1\u30fc\u30ab\u30fc\u3067\u3059\u3002\u5f53\u793e\u306e\u88fd\u54c1\u306f\u9ad8\u54c1\u8cea\u306e\u539f\u6750\u6599\u3068\u9ad8\u5ea6\u306a\u751f\u7523\u6280\u8853\u3092\u4f7f\u7528\u3057\u3066\u3001\u9ad8\u54c1\u8cea\u306e\u4e09\u76f8\u5909\u5727\u5668\u3068 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u30ab\u30b9\u30bf\u30e0\u96fb\u6c17\u7b50\u4f53\u30e1\u30fc\u30ab\u30fc\/\">\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3<\/a>. \u3055\u3089\u306b\u3001\u5f53\u793e\u306b\u306f\u304a\u5ba2\u69d8\u5bfe\u5fdc\u3092\u62c5\u5f53\u3059\u308b\u5c02\u9580\u30c1\u30fc\u30e0\u304c\u304a\u308a\u307e\u3059\u3002KDM\u306f\u7686\u69d8\u306e\u304a\u5f79\u306b\u7acb\u3066\u308b\u3053\u3068\u3092\u697d\u3057\u307f\u306b\u3057\u3066\u304a\u308a\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>In modern power systems, three-phase transformers play an important role in ensuring stable and efficient voltage conversion. This article helps electrical engineers and system integrators understand how three-phase transformers work, their configurations, and types, helping you make decisions suitable for your projects. What Is a Three-phase Transformer? A three-phase transformer is an electrical device used [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":50574,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is a Three-Phase Transformer?\u2014A Complete Guide - KDM Steel<\/title>\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.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is a Three-Phase Transformer?\u2014A Complete Guide - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"In modern power systems, three-phase transformers play an important role in ensuring stable and efficient voltage conversion. 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