{"id":47590,"date":"2026-01-07T09:29:28","date_gmt":"2026-01-07T09:29:28","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=47590"},"modified":"2026-01-07T09:29:28","modified_gmt":"2026-01-07T09:29:28","slug":"three-phase-transformer-sizes","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/","title":{"rendered":"\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba"},"content":{"rendered":"<p>\u96fb\u529b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u76e4\u3068\u306a\u308b\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u6607\u5727\u9001\u96fb\u3001\u964d\u5727\u914d\u96fb\u3001\u96fb\u6c17\u7684\u7d76\u7e01\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306f\u3001\u521d\u671f\u6295\u8cc7\u3068\u904b\u7528\u6027\u80fd\u306e\u4e21\u65b9\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u96fb\u5727\u8981\u4ef6\u306b\u5408\u3063\u305f\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u3069\u306e\u3088\u3046\u306b\u9078\u629e\u3059\u308c\u3070\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u5909\u5727\u5668\u30b5\u30a4\u30ba\u306e\u91cd\u8981\u6027\u3068\u5f71\u97ff\u8981\u56e0\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3001\u5b89\u5168\u6027\u3001\u52b9\u7387\u6027\u3001\u30b3\u30b9\u30c8\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u53d6\u308c\u305f\u9069\u5207\u306a\u5909\u5727\u5668\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3067\u304d\u308b\u3088\u3046\u304a\u624b\u4f1d\u3044\u3057\u307e\u3059\u3002.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 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\" 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href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Three_Phase_Transformer_Sizes\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Small_Three_Phase_Transformers\" >\u5c0f\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-4\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Medium_Three_Phase_Transformers\" >\u4e2d\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\u306e\u30b5\u30a4\u30ba\/#Large_Three_Phase_Transformers\" >\u5927\u578b\u4e09\u76f8\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-6\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#How_to_Size_a_Three_Phase_Transformer\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u9078\u5b9a\u65b9\u6cd5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Determine_the_Load_Power\" >\u8ca0\u8377\u96fb\u529b\u3092\u6c7a\u5b9a\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Add_Future_Growth_and_Margin\" >\u5c06\u6765\u306e\u6210\u9577\u3068\u5229\u76ca\u7387\u3092\u8ffd\u52a0\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 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\u306e\u30b5\u30a4\u30ba\/#Select_Primary_and_Secondary_Voltages\" >\u4e00\u6b21\u96fb\u5727\u3068\u4e8c\u6b21\u96fb\u5727\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/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\u306e\u30b5\u30a4\u30ba\/#Calculate_Full_Load_Current\" >\u5168\u8ca0\u8377\u96fb\u6d41\u3092\u8a08\u7b97\u3059\u308b<\/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\u306e\u30b5\u30a4\u30ba\/#Choose_Transformer_Connection\" >\u5909\u5727\u5668\u63a5\u7d9a\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/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\u306e\u30b5\u30a4\u30ba\/#Select_Standard_Transformer_Rating\" >\u6a19\u6e96\u5909\u5727\u5668\u5b9a\u683c\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#What_Factors_Affect_the_Size_of_a_Three-phase_Transformer\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u8981\u56e0\u306f\u4f55\u3067\u3059\u304b\uff1f<\/a><ul class='ez-toc-list-level-3' ><li class='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\u306e\u30b5\u30a4\u30ba\/#Total_Load\" >\u7dcf\u8ca0\u8377<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Power_Factor\" >\u529b\u7387<\/a><\/li><li class='ez-toc-page-1 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\u306e\u30b5\u30a4\u30ba\/#Load_Type\" >\u8ca0\u8377\u30bf\u30a4\u30d7<\/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\u306e\u30b5\u30a4\u30ba\/#Voltage_and_Current_Level\" >\u96fb\u5727\u3068\u96fb\u6d41\u30ec\u30d9\u30eb<\/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\u306e\u30b5\u30a4\u30ba\/#Future_Expansion\" >\u5c06\u6765\u306e\u62e1\u5f35<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Design_and_Material\" >\u30c7\u30b6\u30a4\u30f3\u3068\u7d20\u6750<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#How_to_Choose_an_Appropriated_Three_Phase_Transformer_Sizes%EF%BC%9F\" >\u9069\u5207\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u9078\u3076\u306b\u306f\uff1f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Accurate_Calculation_of_Electrical_Capacity\" >\u96fb\u6c17\u5bb9\u91cf\u306e\u6b63\u78ba\u306a\u8a08\u7b97<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Selection_of_Appropriate_Technical_Type_of_Three-phase_Transformer\" >\u9069\u5207\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u6280\u8853\u30bf\u30a4\u30d7\u306e\u9078\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Selection_of_Suitable_Cooling_Method\" >\u9069\u5207\u306a\u51b7\u5374\u65b9\u6cd5\u306e\u9078\u629e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Ensuring_Adequate_Transportation_Routes_and_Installation_Space\" >\u9069\u5207\u306a\u8f38\u9001\u30eb\u30fc\u30c8\u3068\u8a2d\u7f6e\u30b9\u30da\u30fc\u30b9\u306e\u78ba\u4fdd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Comprehensive_Evaluation_and_Analysis\" >\u7dcf\u5408\u8a55\u4fa1\u3068\u5206\u6790<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#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-27\" href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\/#Why_Is_the_Size_of_a_Three_Phase_Transformer_So_Important\" >\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u304c\u306a\u305c\u305d\u308c\u307b\u3069\u91cd\u8981\u306a\u306e\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\u306e\u30b5\u30a4\u30ba\/#Is_A_Larger_Transformer_Size_Necessarily_Safer\" >\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u5fc5\u305a\u3057\u3082\u5b89\u5168\u306b\u306a\u308b\u306e\u3067\u3057\u3087\u3046\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\u306e\u30b5\u30a4\u30ba\/#Why_Are_Amorphous_Alloy_Transformers_Large_and_Expensive\" >\u30a2\u30e2\u30eb\u30d5\u30a1\u30b9\u5408\u91d1\u30c8\u30e9\u30f3\u30b9\u306f\u306a\u305c\u5927\u578b\u3067\u9ad8\u4fa1\u306a\u306e\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\u306e\u30b5\u30a4\u30ba\/#Final_Thought\" >\u6700\u5f8c\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_are_Three_Phase_Transformers\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47595\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformer.png\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformer.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformer-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformer-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformer-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u96fb\u78c1\u8a98\u5c0e\u306e\u539f\u7406\u3092\u5229\u7528\u3057\u3066\u3001\u540c\u3058\u5468\u6ce2\u6570\u3067\u3001\u901a\u5e38\u306f\u7570\u306a\u308b\u96fb\u5727\u30ec\u30d9\u30eb\u306e\u4e09\u76f8\u4ea4\u6d41\u96fb\u529b\u3092\u9001\u96fb\u304a\u3088\u3073\u5206\u914d\u3059\u308b\u9759\u6b62\u578b\u96fb\u6c17\u6a5f\u5668\u3067\u3042\u308b\u3002.<\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u4e3b\u306b\u3044\u304f\u3064\u304b\u306e\u4e3b\u8981\u30b7\u30b9\u30c6\u30e0\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u78c1\u6c17\u56de\u8def\u30b7\u30b9\u30c6\u30e0\u3001\u96fb\u6c17\u56de\u8def\u30b7\u30b9\u30c6\u30e0\u3001\u7d76\u7e01\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u3001\u4fdd\u8b77\u76e3\u8996\u30b7\u30b9\u30c6\u30e0\u3001\u69cb\u9020\u90e8\u54c1\u304a\u3088\u3073\u30b1\u30fc\u30b7\u30f3\u30b0\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u305d\u308c\u305e\u308c\u52b9\u7387\u7684\u306a\u78c1\u6c17\u7d4c\u8def\u3092\u63d0\u4f9b\u3057\u3001\u96fb\u6c17\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u5165\u529b\u3001\u51fa\u529b\u3001\u96fb\u5727\u5909\u63db\u3092\u5b9f\u73fe\u3057\u3001\u96fb\u6c17\u7d76\u7e01\u3068\u653e\u71b1\u3092\u691c\u8a3c\u3057\u3001\u5b89\u5168\u306a\u52d5\u4f5c\u3068\u72b6\u614b\u5236\u5fa1\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u5909\u5727\u5668\u7b50\u4f53\/\">\u5909\u5727\u5668<\/a>, \u6a5f\u68b0\u7684\u652f\u6301\u3001\u4fdd\u8b77\u3001\u304a\u3088\u3073\u96fb\u6c17\u7684\u63a5\u7d9a\u3092\u5b9f\u73fe\u3059\u308b\u3002.<\/p>\n<p>\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u7cbe\u5bc6\u306a\u9023\u643a\u306b\u3088\u308a\u3001\u4e09\u76f8\u5909\u5727\u5668\u306f\u52b9\u7387\u7684\u3067\u4fe1\u983c\u6027\u304c\u9ad8\u304f\u67d4\u8edf\u306a\u96fb\u529b\u5909\u63db\u3068\u9001\u96fb\u3092\u5b9f\u73fe\u3057\u3001\u73fe\u4ee3\u306e\u96fb\u529b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u76e4\u3092\u5f62\u6210\u3057\u3066\u3044\u307e\u3059\u3002\u5171\u901a\u306e\u30b3\u30a2\u78c1\u6c17\u56de\u8def\u3092\u4ecb\u3057\u3066\u3001\u4e09\u76f8\u96fb\u6e90\u304b\u3089\u306e3\u3064\u306e\u96fb\u5727\u3092\u5225\u306e\u4e09\u76f8\u30b7\u30b9\u30c6\u30e0\u306b\u52b9\u7387\u7684\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002\u767a\u96fb\u3001\u9001\u96fb\u3001\u914d\u96fb\u306b\u81f3\u308b\u307e\u3067\u3001\u73fe\u4ee3\u306e\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u91cd\u8981\u306a\u6a5f\u5668\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Three_Phase_Transformer_Sizes\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e00\u822c\u7684\u306b\u3001\u5c0f\u578b\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306f\u3001\u5b9a\u683c\u5bb9\u91cf\uff08KVA\uff09\u306b\u3088\u3063\u3066\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u5206\u985e\u306f\u7d76\u5bfe\u7684\u306a\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f7f\u7528\u65b9\u6cd5\u3084\u51b7\u5374\u65b9\u5f0f\u306b\u3088\u3063\u3066\u3082\u5206\u985e\u304c\u5909\u308f\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u306f\u3001\u4e00\u822c\u7684\u306a\u7406\u89e3\u3068\u5178\u578b\u7684\u306a\u4f7f\u7528\u4f8b\u306b\u57fa\u3065\u304d\u3001\u4e09\u76f8\u5909\u5727\u5668\u306e3\u3064\u306e\u30bf\u30a4\u30d7\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Small_Three_Phase_Transformers\"><\/span>\u5c0f\u578b\u4e09\u76f8\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><b>\u6a19\u6e96\u8a55\u4fa1<\/b><\/strong>\u5c0f\u578b\u4e09\u76f8\u5909\u5727\u5668\u306e\u5b9a\u683c\u5bb9\u91cf\u306f\u901a\u5e3810kVA\u304b\u3089500kVA\u306e\u9593\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a\u5909\u5727\u5668\u306ekVA\u30b5\u30a4\u30ba\u306b\u306f\u300115kVA\u300130kVA\u300150kVA\u3001100kVA\u3001250kVA\u3001500kVA\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong><b>\u7279\u5fb4<\/b><\/strong>\u5c0f\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u5c0f\u578b\u5316\u3068\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u69cb\u9020\u3092\u8ffd\u6c42\u3057\u305f\u8a2d\u8a08\u3067\u3001\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3084\u5c4b\u5185\u914d\u96fb\u5ba4\u3078\u306e\u8a2d\u7f6e\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u6a19\u6e96\u7684\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u8a2d\u8a08\u306b\u3088\u308a\u3001\u88fd\u9020\u30b3\u30b9\u30c8\u3082\u6291\u3048\u3089\u308c\u307e\u3059\u3002\u51b7\u5374\u65b9\u5f0f\u306f\u3001\u4e3b\u306bONAN\uff08\u6cb9\u5165\u5f0f\uff09\u3001AN\u3001\u307e\u305f\u306fAF\uff08\u4e7e\u5f0f\uff09\u3067\u3059\u3002.<\/p>\n<p><strong><b>\u4e00\u822c\u7684\u306a\u7528\u9014<\/b><\/strong>\u3053\u308c\u3089\u306e\u30b5\u30a4\u30ba\u306e\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u4e00\u822c\u7684\u306b\u5c0f\u578b\u7523\u696d\u6a5f\u5668\u3001\u5546\u696d\u65bd\u8a2d\u3001\u304a\u3088\u3073\u5efa\u7269\u306e\u7279\u5b9a\u30a8\u30ea\u30a2\u306b\u72ec\u7acb\u3057\u305f\u5b89\u5168\u306a\u96fb\u529b\u4f9b\u7d66\u3092\u884c\u3046\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47593\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Small-Three-Phase-Transformers.png\" alt=\"\u5c0f\u578b\u4e09\u76f8\u5909\u5727\u5668\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Small-Three-Phase-Transformers.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Small-Three-Phase-Transformers-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Small-Three-Phase-Transformers-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Small-Three-Phase-Transformers-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Medium_Three_Phase_Transformers\"><\/span>\u4e2d\u578b\u4e09\u76f8\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><b>\u6a19\u6e96\u8a55\u4fa1<\/b><\/strong>\u4e2d\u578b\u4e09\u76f8\u5909\u5727\u5668\u306e\u5b9a\u683c\u5bb9\u91cf\u306f\u901a\u5e38500kVA\u304b\u308910MVA\uff0810,000kVA\uff09\u306e\u7bc4\u56f2\u5185\u3067\u3059\u3002\u4e00\u822c\u7684\u306a\u5909\u5727\u5668\u306ekVA\u30b5\u30a4\u30ba\u306f\u3001750kVA\u30011MVA\u30012.5MVA\u30015MVA\u30017.5MVA\u3001\u304a\u3088\u307310MVA\u306e\u307f\u3067\u3059\u3002.<\/p>\n<p><strong><b>\u7279\u5fb4<\/b><\/strong>\u4e2d\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u30b3\u30b9\u30c8\u3001\u52b9\u7387\u3001\u4fe1\u983c\u6027\u306e\u6700\u9069\u306a\u30d0\u30e9\u30f3\u30b9\u3092\u5b9f\u73fe\u3067\u304d\u308b\u305f\u3081\u3001\u6280\u8853\u7684\u306b\u6700\u3082\u6210\u719f\u3057\u3066\u304a\u308a\u3001\u6700\u3082\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30ab\u30c6\u30b4\u30ea\u30fc\u3067\u3082\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u8ca0\u8377\u7387\u3084\u74b0\u5883\u6761\u4ef6\u306b\u5fdc\u3058\u3066\u3001\u4e2d\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u901a\u5e38\u3001ONAN\uff08\u6cb9\u51b7\u5f0f\u81ea\u7136\u7a7a\u51b7\uff09\u3084ONAF\uff08\u6cb9\u51b7\u5f0f\u81ea\u7136\u7a7a\u51b7\u5f37\u5236\uff09\u306a\u3069\u306e\u6cb9\u51b7\u5f0f\u51b7\u5374\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u307e\u3059\u3002\u4e7e\u5f0f\u4e09\u76f8\u5909\u5727\u5668\u3067\u306f\u3001AF\u65b9\u5f0f\u304c\u3088\u304f\u63a1\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30bf\u30a4\u30d7\u306e\u5909\u5727\u5668\u306f\u3001\u30b5\u30a4\u30ba\u306b\u95a2\u3057\u3066\u3082\u9ad8\u5ea6\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u8981\u4ef6\u3092\u6e80\u305f\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p><strong><b>\u4e00\u822c\u7684\u306a\u7528\u9014<\/b><\/strong>: <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u4e2d\u96fb\u5727\u5909\u5727\u5668\/\">\u4e2d\u578b\u5909\u5727\u5668<\/a>\u00a0\u5730\u57df\u914d\u96fb\u30fb\u9001\u96fb\u62e0\u70b9\u3067\u306e\u4f7f\u7528\u306f\u3082\u3061\u308d\u3093\u3001\u5927\u898f\u6a21\u5546\u696d\u65bd\u8a2d\u306e\u914d\u96fb\u5ba4\u3084\u5de5\u696d\u30d7\u30e9\u30f3\u30c8\u306e\u4e3b\u8981\u914d\u96fb\u5909\u96fb\u6240\u3078\u306e\u8a2d\u7f6e\u3082\u53ef\u80fd\u3067\u3059\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47592\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Medium-Three-Phase-Transformers.png\" alt=\"\u4e2d\u578b\u4e09\u76f8\u5909\u5727\u5668\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Medium-Three-Phase-Transformers.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Medium-Three-Phase-Transformers-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Medium-Three-Phase-Transformers-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Medium-Three-Phase-Transformers-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Large_Three_Phase_Transformers\"><\/span>\u5927\u578b\u4e09\u76f8\u5909\u5727\u5668<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><b>\u6a19\u6e96\u8a55\u4fa1<\/b><\/strong>\u5927\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u901a\u5e3810MVA\u4ee5\u4e0a\u3067\u3001\u6700\u5927\u30671000MVA\u3092\u8d85\u3048\u308b\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u5909\u5727\u5668\u306ekVA\u30b5\u30a4\u30ba\u306f\u300120MVA\u300150MVA\u3001100MVA\u3001250MVA\u3067\u3059\u3002.<\/p>\n<p><strong><b>\u7279\u5fb4<\/b><\/strong>\u5927\u578b\u4e09\u76f8\u5909\u5727\u5668\u306e\u88fd\u9020\u6280\u8853\u306f\u3088\u308a\u8907\u96d1\u3067\u3042\u308a\u3001\u307b\u307c\u3059\u3079\u3066\u304c\u7279\u6ce8\u54c1\u3068\u306a\u308b\u3002.<\/p>\n<p>\u4e2d\u3067\u3082\u3001\u7d76\u7e01\u8a2d\u8a08\u306f\u88fd\u9020\u4e0a\u306e\u96e3\u984c\u3067\u3042\u308a\u3001\u5909\u5727\u5668\u306f\u9ad8\u51fa\u529b\u9001\u96fb\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u71b1\u306b\u5bfe\u6297\u3059\u308b\u305f\u3081\u306b\u5f37\u5236\u51b7\u5374\u65b9\u5f0f\u3092\u63a1\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002.<\/p>\n<p>\u8d85\u9ad8\u51fa\u529b\u4f1d\u9001\u3068\u5f37\u529b\u306a\u51b7\u5374\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001\u5fc5\u7136\u7684\u306b\u5de8\u5927\u306a\u7269\u7406\u7684\u5bf8\u6cd5\u3068\u91cd\u91cf\u304c\u5fc5\u8981\u3068\u306a\u308a\u3001\u6975\u3081\u3066\u9ad8\u3044\u52b9\u7387\u3082\u6c42\u3081\u3089\u308c\u308b\u3002.<\/p>\n<p><strong><b>\u4e00\u822c\u7684\u306a\u7528\u9014<\/b><\/strong>\u5927\u578b\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u706b\u529b\u767a\u96fb\u6240\u3001\u6c34\u529b\u767a\u96fb\u6240\u3001\u539f\u5b50\u529b\u767a\u96fb\u6240\u306e\u4e3b\u5909\u5727\u5668\u3068\u3057\u3066\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u8d85\u9ad8\u5727\u5909\u96fb\u6240\u3084\u6975\u8d85\u9ad8\u5727\u5909\u96fb\u6240\u306e\u4e3b\u5909\u5727\u5668\u3068\u3057\u3066\u3001\u3042\u308b\u3044\u306f\u5927\u898f\u6a21\u518d\u751f\u53ef\u80fd\u30a8\u30cd\u30eb\u30ae\u30fc\u57fa\u5730\u306e\u96c6\u96fb\u30fb\u6607\u5727\u5909\u96fb\u6240\u3068\u3057\u3066\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47591\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Large-Three-Phase-Transformers.png\" alt=\"\u5927\u578b\u4e09\u76f8\u5909\u5727\u5668\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Large-Three-Phase-Transformers.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Large-Three-Phase-Transformers-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Large-Three-Phase-Transformers-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Large-Three-Phase-Transformers-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Size_a_Three_Phase_Transformer\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u9078\u5b9a\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u9078\u5b9a\u3068\u306f\u3001\u8ca0\u8377\u306b\u5b89\u5168\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3067\u304d\u308bkVA\/MVA\u5b9a\u683c\u3068\u96fb\u5727\u5b9a\u683c\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Determine_the_Load_Power\"><\/span>\u8ca0\u8377\u96fb\u529b\u3092\u6c7a\u5b9a\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8ca0\u8377\u96fb\u529b\u306e\u6c7a\u5b9a\u306f\u3001\u6700\u3082\u57fa\u672c\u7684\u304b\u3064\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3059\u3002\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u306f\u3001\u6709\u52b9\u96fb\u529b\uff08kW\uff09\u3067\u306f\u306a\u304f\u3001\u3059\u3079\u3066\u306e\u8ca0\u8377\u6a5f\u5668\u304c\u5fc5\u8981\u3068\u3059\u308b\u7dcf\u76ae\u76f8\u96fb\u529b\uff08kVA\uff09\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u307e\u305a\u3001\u5909\u5727\u5668\u304c\u4f9b\u7d66\u3059\u308b\u3059\u3079\u3066\u306e\u8ca0\u8377\u3092\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u8ca0\u8377\u306e\u4e3b\u8981\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u306f\u3001\u5b9a\u683c\u96fb\u529b\uff08kW\uff09\u3068\u529b\u7387\uff08PF\uff09\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u6b21\u306b\u3001\u5404\u8ca0\u8377\u306e\u96fb\u529b\u3092kVA\u306b\u5909\u63db\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e09\u76f8\u8ca0\u8377\u306e\u5834\u5408\u306f\u3001\u8ca0\u8377\uff08kVA\uff09\uff1d\u8ca0\u8377\u306e\u6709\u52b9\u96fb\u529b\uff08kW\uff09\uff0f\u529b\u7387\uff08PF\uff09\u3068\u3044\u3046\u5f0f\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u3059\u3079\u3066\u306e\u6a5f\u5668\u304c\u540c\u6642\u306b\u30d5\u30eb\u7a3c\u50cd\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3053\u3068\u306b\u7559\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u305f\u3081\u3001\u696d\u754c\u6a19\u6e96\u307e\u305f\u306f\u5b9f\u969b\u306e\u904b\u7528\u7d4c\u9a13\u306b\u57fa\u3065\u3044\u30661\u672a\u6e80\u306e\u9700\u8981\u7387\u3092\u9078\u629e\u3057\u3001\u305d\u308c\u3092\u7dcf\u63a5\u7d9a\u8ca0\u8377\u306b\u4e57\u3058\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u3059\u3079\u3066\u306e\u8ca0\u8377\u306ekVA\u5024\u3092\u5408\u8a08\u3057\u3066\u3001\u73fe\u5728\u306e\u904b\u8ee2\u306b\u5fc5\u8981\u306a\u6700\u5c0fkVA\u5024\u3092\u7b97\u51fa\u3057\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Add_Future_Growth_and_Margin\"><\/span>\u5c06\u6765\u306e\u6210\u9577\u3068\u5229\u76ca\u7387\u3092\u8ffd\u52a0\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5909\u5727\u5668\u306f\u9577\u671f\u8cc7\u7523\u3067\u3042\u308b\u305f\u3081\u3001100%\u306e\u5168\u8ca0\u8377\u3067\u9577\u6642\u9593\u904b\u8ee2\u3059\u308b\u3068\u3001\u8010\u7528\u5e74\u6570\u304c\u77ed\u304f\u306a\u308a\u3001\u640d\u5931\u304c\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5b89\u5168\u306a\u904b\u8ee2\u306e\u305f\u3081\u306b\u4e00\u5b9a\u306e\u4f59\u88d5\u3092\u6301\u305f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u901a\u5e38\u306f10%\u304b\u308915%\u306e\u7bc4\u56f2\u3067\u4f59\u88d5\u3092\u6301\u305f\u305b\u307e\u3059\u3002.<\/p>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u9577\u671f\u7684\u306a\u767a\u5c55\u306b\u3064\u3044\u3066\u3082\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4f01\u696d\u8a08\u753b\u3084\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u8a08\u753b\u306b\u57fa\u3065\u304d\u3001\u4eca\u5f8c\u6570\u5e74\u9593\u306e\u8ca0\u8377\u5897\u52a0\u306e\u53ef\u80fd\u6027\u3092\u4e88\u6e2c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u822c\u7684\u306b\u3001\u5c06\u6765\u306e\u4f59\u88d5\u5bb9\u91cf\u306e\u5897\u52a0\u306f\u3001\u7d0420%\u304b\u308930%\u7a0b\u5ea6\u306b\u306a\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u7dcf\u5bb9\u91cf\u8981\u4ef6kVA\u3092\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002kVA = \u73fe\u5728\u306e\u904b\u8ee2\u9700\u8981 * (1 + \u5c06\u6765\u306e\u6210\u9577\u7387 % + \u5b89\u5168\u30de\u30fc\u30b8\u30f3 %)<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Select_Primary_and_Secondary_Voltages\"><\/span>\u4e00\u6b21\u96fb\u5727\u3068\u4e8c\u6b21\u96fb\u5727\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u3053\u306e\u6bb5\u968e\u3067\u306f\u3001\u96fb\u6e90\u3068\u8ca0\u8377\u306b\u5fdc\u3058\u3066\u96fb\u5727\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u6b21\u5074\u306e\u5165\u529b\u9ad8\u96fb\u5727\u306f\u901a\u5e38\u3001\u96fb\u529b\u4f9b\u7d66\u7db2\u306b\u3088\u3063\u3066\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002\u5317\u7c73\u306e\u4e00\u822c\u7684\u306a\u96fb\u5727\u306f12.47kV\u30014.16kV\u306a\u3069\u3001\u4e2d\u56fd\u306e\u4e00\u822c\u7684\u306a\u96fb\u5727\u306f10kV\u300135kV\u3001110kV\u306a\u3069\u3067\u3059\u3002.<\/p>\n<p>\u4e8c\u6b21\u96fb\u5727\u3001\u3064\u307e\u308a\u4f4e\u51fa\u529b\u96fb\u5727\u306f\u3001\u901a\u5e38\u3001\u5de5\u5834\u3084\u5efa\u7269\u5185\u306e\u96fb\u6c17\u6a5f\u5668\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u30e8\u30fc\u30ed\u30c3\u30d1\u3068\u4e2d\u56fd\u306e\u4e00\u822c\u7684\u306a\u898f\u683c\u306f400V\/230V\u3067\u3059\u304c\u3001\u5317\u7c73\u3067\u306f480V\/277V\u3068208V\/120V\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5909\u5727\u5668\u306b\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u304c\u88c5\u5099\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3082\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u304c\u3042\u308c\u3070\u3001\u7cfb\u7d71\u96fb\u5727\u306e\u5909\u52d5\u306b\u9069\u5207\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Calculate_Full_Load_Current\"><\/span>\u5168\u8ca0\u8377\u96fb\u6d41\u3092\u8a08\u7b97\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5168\u8ca0\u8377\u96fb\u6d41\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u30b1\u30fc\u30d6\u30eb\u3001\u6821\u6b63\u6a5f\u5668\u3092\u3088\u308a\u9069\u5207\u306b\u4fdd\u8b77\u3067\u304d\u307e\u3059\u3002\u901a\u5e38\u3001\u6b21\u306e\u5f0f\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5168\u8ca0\u8377\u96fb\u6d41\uff08\u30a2\u30f3\u30da\u30a2\uff09=kVA*1000\/(\u96fb\u5727\uff08\u30dc\u30eb\u30c8\uff09*\u221a3)\u3002.<\/p>\n<p>\u221a3\u306f\u901a\u5e381.732\u306e\u5024\u3092\u3068\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u4e00\u6b21\u5074\u3068\u4e8c\u6b21\u5074\u306e\u96fb\u6d41\u3092\u305d\u308c\u305e\u308c\u8a08\u7b97\u3057\u3001\u8a08\u7b97\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u5404\u5074\u306e\u9069\u5207\u306a\u30c7\u30d0\u30a4\u30b9\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Choose_Transformer_Connection\"><\/span>\u5909\u5727\u5668\u63a5\u7d9a\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47597\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-3.png\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\uff083\uff09\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-3.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-3-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-3-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-3-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u96fb\u5727\u4f9b\u7d66\u91cf\u3068\u9ad8\u8abf\u6ce2\u6291\u5236\u306b\u5f71\u97ff\u3059\u308b\u305f\u3081\u3001\u9069\u5207\u306a\u5dfb\u7dda\u69cb\u6210\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u4e00\u822c\u7684\u306a\u5dfb\u7dda\u69cb\u6210\u3092\u793a\u3057\u307e\u3059\u3002.<\/p>\n<p>&nbsp;<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"248\">\u7e4b\u304c\u308a<\/td>\n<td width=\"266\">\u30d7\u30e9\u30a4\u30de\u30ea\u30fc\/\u30cf\u30a4\u30b5\u30a4\u30c9<\/td>\n<td width=\"296\">\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\/\u30ed\u30fc\u30b5\u30a4\u30c9<\/td>\n<td width=\"406\">\u4e3b\u306a\u7279\u5fb4\u3068\u7528\u9014<\/td>\n<\/tr>\n<tr>\n<td width=\"248\">\u30c7\u30eb\u30bf-Y\uff08\u0394-Y\uff09<\/td>\n<td width=\"266\">\u30c7\u30eb\u30bf<\/td>\n<td width=\"296\">\u30ef\u30a4<\/td>\n<td width=\"406\">\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u63a5\u7d9a\u65b9\u5f0f\u3067\u3059\u3002\u4e8c\u6b21\u5074\u306f\u3001\u5358\u76f8\u8ca0\u8377\u304a\u3088\u3073\u4e09\u76f8\u30e2\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u5b89\u5b9a\u3057\u305f\u4e2d\u6027\u70b9\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u63a5\u7d9a\u65b9\u5f0f\u306f\u3001\u7b2c3\u9ad8\u8abf\u6ce2\u3092\u6291\u5236\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u3001\u73fe\u4ee3\u306e\u914d\u96fb\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/td>\n<\/tr>\n<tr>\n<td width=\"248\">\u30c7\u30eb\u30bf\u30c7\u30eb\u30bf(\u0394-\u0394)<\/td>\n<td width=\"266\">\u30c7\u30eb\u30bf<\/td>\n<td width=\"296\">\u30c7\u30eb\u30bf<\/td>\n<td width=\"406\">\u5927\u578b\u30e2\u30fc\u30bf\u30fc\u3084\u6574\u6d41\u5668\u306a\u3069\u306e\u7d14\u7c8b\u306a\u4e09\u76f8\u7523\u696d\u7528\u8ca0\u8377\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u7b2c3\u9ad8\u8abf\u6ce2\u5faa\u74b0\u96fb\u6d41\u306e\u554f\u984c\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4e2d\u6027\u70b9\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/td>\n<\/tr>\n<tr>\n<td width=\"248\">\u30ef\u30a4\u30ef\u30a4\uff08YY\uff09<\/td>\n<td width=\"266\">\u30ef\u30a4<\/td>\n<td width=\"296\">\u30ef\u30a4<\/td>\n<td width=\"406\">\u53e4\u3044\u7523\u696d\u30b7\u30b9\u30c6\u30e0\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u4e09\u76f8\u4e0d\u5e73\u8861\u8ca0\u8377\u3084\u4e2d\u6027\u70b9\u5909\u52d5\u306b\u654f\u611f\u3067\u3059\u3002\u4e09\u76f8\u96fb\u529b\u8ca0\u8377\u304c\u652f\u914d\u7684\u3067\u3001\u5358\u76f8\u8ca0\u8377\u304c\u5c0f\u3055\u304f\u5e73\u8861\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/td>\n<\/tr>\n<tr>\n<td width=\"248\">\u30b9\u30bf\u30fc\u30c7\u30eb\u30bf\uff08Y-\u0394\uff09<\/td>\n<td width=\"266\">\u30ef\u30a4<\/td>\n<td width=\"296\">\u30c7\u30eb\u30bf<\/td>\n<td width=\"406\">\u5909\u96fb\u6240\u306a\u3069\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u964d\u5727\u5909\u5727\u5668\u306f\u3001\u9ad8\u96fb\u5727\u3092\u4e2d\u96fb\u5727\u306b\u964d\u5727\u3057\u307e\u3059\u3002\u4e8c\u6b21\u5074\u306b\u306f\u4e2d\u6027\u70b9\u304c\u3042\u308a\u307e\u305b\u3093\u3002.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><strong><b>\u6ce8\u8a18<\/b><\/strong>\u7523\u696d\u7528\u304a\u3088\u3073\u5546\u696d\u7528\u5efa\u7269\u306e\u96fb\u529b\u914d\u96fb\u306e\u5927\u90e8\u5206\u306b\u304a\u3044\u3066\u3001\u30c7\u30eb\u30bf-\u30b9\u30bf\u30fc\uff08\u0394-Y\uff09\u63a5\u7d9a\u30b0\u30eb\u30fc\u30d7\u304c\u63a8\u5968\u3055\u308c\u308b\u69cb\u6210\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Select_Standard_Transformer_Rating\"><\/span>\u6a19\u6e96\u5909\u5727\u5668\u5b9a\u683c\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5909\u5727\u5668\u306f\u6a19\u6e96\u5bb9\u91cf\u30b7\u30ea\u30fc\u30ba\u306b\u57fa\u3065\u3044\u3066\u88fd\u9020\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u5bb9\u91cf\u3092\u4efb\u610f\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u4e00\u822c\u7684\u306b\u306f\u3001\u304a\u5ba2\u69d8\u306e\u5bb9\u91cf\u8981\u4ef6\u306b\u6700\u3082\u8fd1\u3044\u6a19\u6e96\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u304a\u9078\u3073\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p>IEC\u898f\u683c\u30b7\u30ea\u30fc\u30ba\uff08kVA\uff09\u306b\u3088\u308b\u3068\u300175 kVA\u3001100 kVA\u3001125 kVA\u3001160 kVA\u3001200 kVA\u3001250 kVA\u3001315 kVA\u3001400 kVA\u3001500 kVA\u3001630 kVA\u3001800 kVA\u30011000 kVA\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5fc5\u8981\u306a\u5bb9\u91cf\u304c145.6 kVA\u306e\u5834\u5408\u3001\u3088\u308a\u5927\u304d\u304f\u3001\u304b\u3064\u8fd1\u3044\u898f\u683c\u306e\u5909\u5727\u5668\u3092\u63a2\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u6700\u7d42\u7684\u306b\u306fIEC\u898f\u683c\u306b\u6e96\u62e0\u3057\u305f160 kVA\u306e\u5909\u5727\u5668\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u96fb\u6c17\u6a5f\u5668\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u3001\u6700\u7d42\u7684\u306b\u9078\u629e\u3057\u305f\u5b9a\u683c\u5bb9\u91cf\u306b\u57fa\u3065\u3044\u3066\u3001\u5909\u5727\u5668\u306e\u5b9a\u683c\u5168\u8ca0\u8377\u96fb\u6d41\u3092\u518d\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u65b9\u6cd5\u306b\u57fa\u3065\u3044\u3066\u3001\u6280\u8853\u7684\u306b\u5408\u7406\u7684\u304b\u3064\u7d4c\u6e08\u7684\u306b\u6700\u9069\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u7b97\u51fa\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u56fd\u304a\u3088\u3073\u5730\u57df\u306e\u96fb\u6c17\u8a2d\u8a08\u57fa\u6e96\u3092\u9075\u5b88\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u7d42\u7684\u306a\u78ba\u8a8d\u3068\u627f\u8a8d\u306f\u3001\u5c02\u9580\u306e\u96fb\u6c17\u6280\u8853\u8005\u306b\u4f9d\u983c\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Factors_Affect_the_Size_of_a_Three-phase_Transformer\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u8981\u56e0\u306f\u4f55\u3067\u3059\u304b\uff1f<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47598\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers.png\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Total_Load\"><\/span>\u7dcf\u8ca0\u8377<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u3053\u308c\u306f\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u6c7a\u5b9a\u3059\u308b\u6700\u3082\u76f4\u63a5\u7684\u306a\u8981\u56e0\u3067\u3059\u3002\u8ca0\u8377\u304c\u5897\u52a0\u3059\u308b\u3068\u3001\u9244\u5fc3\u3068\u5dfb\u7dda\u306e\u65ad\u9762\u7a4d\u3082\u5897\u52a0\u3057\u307e\u3059\u3002\u5bb9\u91cf\uff08kVA\uff09\u304c\u307b\u307c\u500d\u5897\u3059\u308b\u3054\u3068\u306b\u3001\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3068\u91cd\u91cf\u306f\u5143\u306e\u30b5\u30a4\u30ba\u306e\u7d042\u500d\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Power_Factor\"><\/span>\u529b\u7387<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u529b\u7387\u304c\u4f4e\u3044\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u540c\u3058\u6709\u52b9\u96fb\u529b\uff08kW\uff09\u3092\u5f97\u308b\u305f\u3081\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u3088\u308a\u591a\u304f\u306e\u96fb\u6d41\uff08kVA\uff09\u3092\u9001\u96fb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u529b\u7387\u304c\u4f4e\u3044\u5834\u5408\u3001\u3088\u308a\u5927\u304d\u306a\u5bb9\u91cf\u306e\u5909\u5727\u5668\u3068\u3001\u3088\u308a\u5927\u304d\u306a\u5dfb\u7dda\u65ad\u9762\u7a4d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306b\u3082\u5f71\u97ff\u3057\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Load_Type\"><\/span>\u8ca0\u8377\u30bf\u30a4\u30d7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5909\u5727\u5668\u306e\u5b9a\u683c\u5bb9\u91cf\u306f\u3001\u7dda\u5f62\u8ca0\u8377\u306ekVA\u9700\u8981\u306b\u57fa\u3065\u3044\u3066\u76f4\u63a5\u6c7a\u5b9a\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u975e\u7dda\u5f62\u8ca0\u8377\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u9ad8\u8abf\u6ce2\u96fb\u6d41\u306b\u5bfe\u3057\u3066\u306f\u3001\u901a\u5e38\u3001\u5909\u5727\u5668\u306b\u306f\u7279\u5225\u306a\u8a2d\u8a08\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u5bb9\u91cf\u3092\u6e1b\u3089\u3059\u3068\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u640d\u5931\u3092\u4f4e\u6e1b\u3057\u305f\u5dfb\u7dda\u69cb\u9020\u3092\u4f7f\u7528\u3057\u305f\u308a\u3001\u5c02\u7528\u306e\u9ad8\u8abf\u6ce2\u30b7\u30fc\u30eb\u30c9\u7fa4\u3092\u4f7f\u7528\u3057\u305f\u308a\u3059\u308b\u3068\u3001\u7269\u7406\u7684\u306a\u30b5\u30a4\u30ba\u3068\u88fd\u9020\u30b3\u30b9\u30c8\u304c\u5897\u52a0\u3059\u308b\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Voltage_and_Current_Level\"><\/span>\u96fb\u5727\u3068\u96fb\u6d41\u30ec\u30d9\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e00\u6b21\u5074\u306e\u96fb\u5727\u304c\u9ad8\u3044\u307b\u3069\u3001\u7d76\u7e01\u8ddd\u96e2\u306e\u5fc5\u8981\u91cf\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u7d76\u7e01\u5c64\u306e\u539a\u307f\u306e\u5897\u52a0\u3001\u5dfb\u7dda\u306e\u5bf8\u6cd5\u306e\u62e1\u5927\u3001\u6cbf\u9762\u8ddd\u96e2\u306e\u5897\u52a0\u306a\u3069\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u4e8c\u6b21\u5074\u306e\u96fb\u6d41\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u5fc5\u8981\u306a\u5c0e\u4f53\u306e\u65ad\u9762\u7a4d\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Future_Expansion\"><\/span>\u5c06\u6765\u306e\u62e1\u5f35<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5c06\u6765\u306e\u62e1\u5f35\u4f59\u5730\u306b\u3088\u308a\u3001\u9244\u5fc3\u3001\u5dfb\u7dda\u3001\u51b7\u5374\u30b7\u30b9\u30c6\u30e0\u306e\u898f\u6a21\u304c\u62e1\u5927\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5909\u5727\u5668\u306f\u8efd\u8ca0\u8377\u904b\u8ee2\u3068\u306a\u308a\u3001\u904b\u8ee2\u52b9\u7387\u3068\u7d4c\u6e08\u6027\u304c\u4f4e\u4e0b\u3059\u308b\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Design_and_Material\"><\/span>\u30c7\u30b6\u30a4\u30f3\u3068\u7d20\u6750<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30b3\u30a2\u6750\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u3001\u30b3\u30a2\u306e\u65ad\u9762\u7a4d\u3068\u91cd\u91cf\u306f\u5927\u304d\u304f\u5909\u5316\u3057\u307e\u3059\u3002\u30b7\u30ea\u30b3\u30f3\u92fc\u677f\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u540c\u3058\u5bb9\u91cf\u3067\u3082\u30b3\u30a2\u306e\u65ad\u9762\u7a4d\u3068\u91cd\u91cf\u3092\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u5dfb\u7dda\u306e\u6750\u8cea\u306b\u3088\u3063\u3066\u3082\u3001\u5dfb\u7dda\u306e\u30b5\u30a4\u30ba\u3084\u88fd\u9020\u30b3\u30b9\u30c8\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u3001\u9285\u306f\u5c0e\u96fb\u7387\u304c\u9ad8\u304f\u3001\u5dfb\u7dda\u306f\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>\u8010\u71b1\u6027\u304c\u9ad8\u3044\u307b\u3069\u3001\u5909\u5727\u5668\u306f\u3088\u308a\u5927\u304d\u306a\u8ca0\u8377\u96fb\u6d41\u306b\u5bfe\u5fdc\u3067\u304d\u3001\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u8a2d\u8a08\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Choose_an_Appropriated_Three_Phase_Transformer_Sizes%EF%BC%9F\"><\/span>\u9069\u5207\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u9078\u3076\u306b\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u9069\u5207\u306a\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u96fb\u529b\u30b7\u30b9\u30c6\u30e0\u306e\u4fe1\u983c\u6027\u3001\u7d4c\u6e08\u6027\u3001\u305d\u3057\u3066\u9577\u671f\u7684\u306a\u904b\u7528\u52b9\u7387\u3092\u5de6\u53f3\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3042\u306a\u305f\u306b\u3068\u3063\u3066\u4f53\u7cfb\u7684\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47596\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-2.png\" alt=\"\u4e09\u76f8\u5909\u5727\u5668\uff08\uff12\uff09\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-2.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-2-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-2-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Three-Phase-Transformers-2-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Accurate_Calculation_of_Electrical_Capacity\"><\/span>\u96fb\u6c17\u5bb9\u91cf\u306e\u6b63\u78ba\u306a\u8a08\u7b97<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u304c\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u5fc5\u8981\u306e\u3042\u308b\u8ca0\u8377\u6a5f\u5668\u3092\u3059\u3079\u3066\u30ea\u30b9\u30c8\u30a2\u30c3\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5404\u6a5f\u5668\u306e\u5b9a\u683c\u96fb\u529b\u3084\u529b\u7387\u306a\u3069\u306e\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3082\u8a18\u9332\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u9069\u5207\u306a\u5fc5\u8981\u4fc2\u6570\u306f\u3001\u56fd\u5bb6\u898f\u683c\u3092\u53c2\u7167\u3059\u308b\u304b\u3001\u7d4c\u9a13\u8c4a\u5bcc\u306a\u30a8\u30f3\u30b8\u30cb\u30a2\u3084\u696d\u754c\u5c02\u9580\u5bb6\u306b\u76f8\u8ac7\u3057\u3066\u898b\u3064\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u540c\u6642\u4fc2\u6570\u306b\u57fa\u3065\u3044\u3066\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u6700\u5927\u7dcf\u5408\u8ca0\u8377\u3068\u5404\u30b5\u30d6\u30b7\u30b9\u30c6\u30e0\u306e\u6700\u5927\u9700\u8981\u306e\u5408\u8a08\u3068\u306e\u6bd4\u7387\u3092\u8a08\u7b97\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p>\u6700\u5f8c\u306b\u3001\u6709\u52b9\u96fb\u529b\u306f\u3001\u6709\u52b9\u96fb\u529b\uff08kW\uff09=\u03a3\uff08\u6a5f\u5668\u306e\u8a2d\u7f6e\u96fb\u529b\u00d7\u5fc5\u8981\u4fc2\u6570\uff09\u00d7\u540c\u6642\u4fc2\u6570\u3068\u3044\u3046\u5f0f\u306b\u57fa\u3065\u3044\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u6b21\u306b\u3001\u5fc5\u8981\u5bb9\u91cfkVA=kW\/\u5e73\u5747\u529b\u7387\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002.<\/p>\n<p>\u524d\u8ff0\u306e\u3068\u304a\u308a\u3001\u5fc5\u8981\u306a\u5bb9\u91cf\u3092\u8a08\u7b97\u3059\u308b\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002\u6a5f\u5668\u306e\u5b89\u5168\u6027\u3068\u9577\u671f\u7684\u306a\u904b\u7528\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5c06\u6765\u7684\u306a\u4f59\u88d5\u3068\u5909\u5727\u5668\u306e\u6700\u9069\u306a\u8ca0\u8377\u7387\u3082\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u6a5f\u5668\u306e\u6d88\u8cbb\u96fb\u529b\u3092\u5358\u7d14\u306b\u5408\u8a08\u3059\u308b\u306e\u306f\u907f\u3051\u3066\u304f\u3060\u3055\u3044\u3002\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u9078\u5b9a\u3092\u8aa4\u308b\u3068\u3001\u6295\u8cc7\u30b3\u30b9\u30c8\u3001\u7121\u8ca0\u8377\u640d\u5931\u3001\u305d\u3057\u3066\u7d4c\u6e08\u6027\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3057\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Selection_of_Appropriate_Technical_Type_of_Three-phase_Transformer\"><\/span>\u9069\u5207\u306a\u4e09\u76f8\u5909\u5727\u5668\u306e\u6280\u8853\u30bf\u30a4\u30d7\u306e\u9078\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u4e00\u822c\u7684\u306b\u6cb9\u5165\u5f0f\u3068\u4e7e\u5f0f\u306e2\u7a2e\u985e\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u4e7e\u5f0f\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u706b\u707d\u5b89\u5168\u6027\u304c\u9ad8\u304f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u304c\u4e0d\u8981\u3067\u3059\u3002\u4e00\u65b9\u3001\u6cb9\u5165\u5f0f\u4e09\u76f8\u5909\u5727\u5668\u306f\u3001\u904e\u8ca0\u8377\u5bb9\u91cf\u304c\u5927\u304d\u304f\u3001\u9a12\u97f3\u3082\u4f4e\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u9ad8\u5c64\u30d3\u30eb\u3001\u5730\u4e0b\u65bd\u8a2d\u3001\u4eba\u53e3\u5bc6\u96c6\u5730\u57df\u3001\u9632\u706b\u30fb\u9632\u7206\u5bfe\u7b56\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u6240\u306a\u3069\u3067\u306f\u3001\u4e7e\u5f0f\u5909\u5727\u5668\u304c\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u5b89\u5168\u4e0a\u306e\u7406\u7531\u304b\u3089\u3001\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306f\u4e7e\u5f0f\u5909\u5727\u5668\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5c4b\u5916\u5909\u96fb\u6240\u3084\u30b3\u30b9\u30c8\u91cd\u8996\u306e\u7523\u696d\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u6cb9\u5165\u5909\u5727\u5668\u306e\u4f7f\u7528\u3082\u691c\u8a0e\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u7dcf\u3058\u3066\u8a00\u3048\u3070\u3001\u3053\u308c\u306f\u4e3b\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u74b0\u5883\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u57fa\u6e96\u3001\u304a\u3088\u3073\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u8981\u4ef6\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Selection_of_Suitable_Cooling_Method\"><\/span>\u9069\u5207\u306a\u51b7\u5374\u65b9\u6cd5\u306e\u9078\u629e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3068\u52d5\u4f5c\u7279\u6027\u3092\u6700\u9069\u5316\u3057\u305f\u3044\u5834\u5408\u3001\u51b7\u5374\u65b9\u6cd5\u306e\u9078\u629e\u3082\u7279\u306b\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>IEC\u898f\u683c\u306b\u3088\u308c\u3070\u3001\u6cb9\u5165\u5909\u5727\u5668\u306e\u51b7\u5374\u65b9\u6cd5\u306fONAN\u3001ONAF\u3001\u304a\u3088\u3073OFAF\u306b\u5206\u985e\u3055\u308c\u308b\u3002.<\/p>\n<p><strong><b>\u30aa\u30ca\u30f3<\/b><\/strong>\u30b7\u30f3\u30d7\u30eb\u3067\u9759\u97f3\u6027\u306b\u512a\u308c\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3082\u4e0d\u8981\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u653e\u71b1\u52b9\u7387\u304c\u4f4e\u3044\u305f\u3081\u3001\u5c0f\u578b\u304b\u3089\u4e2d\u578b\u306e\u5909\u5727\u5668\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><strong><b>ONAF<\/b><\/strong>\u653e\u71b1\u80fd\u529b\u304c\u9ad8\u304f\u3001\u5909\u5727\u5668\u306e\u8a2d\u8a08\u3082\u3088\u308a\u30b3\u30f3\u30d1\u30af\u30c8\u3067\u3059\u3002\u30b5\u30a4\u30ba\u3001\u5bb9\u91cf\u3001\u30b3\u30b9\u30c8\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u53d6\u308c\u305f\u4e3b\u6d41\u306e\u9078\u629e\u80a2\u3067\u3042\u308a\u3001\u4e2d\u578b\u304b\u3089\u5927\u578b\u306e\u5909\u5727\u5668\u306b\u6700\u9069\u3067\u3059\u3002.<\/p>\n<p><strong><b>OFAF<\/b><\/strong>\u653e\u71b1\u52b9\u7387\u306f\u6700\u9ad8\u30ec\u30d9\u30eb\u3067\u3059\u304c\u3001\u69cb\u9020\u304c\u8907\u96d1\u3067\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u8981\u4ef6\u3082\u9ad8\u3044\u3067\u3059\u3002\u5927\u578b\u304a\u3088\u3073\u8d85\u5927\u578b\u5909\u5727\u5668\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u4e7e\u5f0f\u5909\u5727\u5668\u306e\u51b7\u5374\u65b9\u6cd5\u306f\u3001AN\u65b9\u5f0f\u3068AF\u65b9\u5f0f\u306b\u5206\u985e\u3055\u308c\u308b\u3002.<\/p>\n<p><strong><b>\u30a2\u30f3<\/b><\/strong>\u9759\u97f3\u6027\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u51b7\u5374\u80fd\u529b\u306f\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u4e2d\u898f\u6a21\u5b9a\u683c\u3067\u4f4e\u8ca0\u8377\u306e\u5c4b\u5185\u74b0\u5883\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><strong><b>AF<\/b><\/strong>\u672c\u4f53\u30b5\u30a4\u30ba\u3092\u5c0f\u578b\u5316\u3057\u306a\u304c\u3089\u3001\u3088\u308a\u5927\u304d\u306a\u5909\u5727\u5668\u5bb9\u91cf\uff08kVA\uff09\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u5c4b\u5185\u30b9\u30da\u30fc\u30b9\u306e\u7bc0\u7d04\u306b\u6700\u9069\u306a\u9078\u629e\u80a2\u3067\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ensuring_Adequate_Transportation_Routes_and_Installation_Space\"><\/span>\u9069\u5207\u306a\u8f38\u9001\u30eb\u30fc\u30c8\u3068\u8a2d\u7f6e\u30b9\u30da\u30fc\u30b9\u306e\u78ba\u4fdd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u96fb\u6c17\u4ed5\u69d8\u3092\u9078\u629e\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u8f38\u9001\u30eb\u30fc\u30c8\u3092\u5fb9\u5e95\u7684\u306b\u8abf\u67fb\u3057\u3001\u5c02\u7528\u306e\u8f38\u9001\u8a08\u753b\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306b\u57fa\u3065\u3044\u3066\u3001\u8a2d\u7f6e\u30b9\u30da\u30fc\u30b9\u306e\u9069\u5207\u306a\u8a08\u753b\u3092\u7acb\u3066\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002IEC\u307e\u305f\u306fISO\u898f\u683c\u306b\u5f93\u3063\u3066\u3001\u4fdd\u5b88\u901a\u8def\u3001\u63db\u6c17\u8ddd\u96e2\u3001\u304a\u3088\u3073\u96fb\u6c17\u7684\u5b89\u5168\u8ddd\u96e2\u306e\u305f\u3081\u306e\u5341\u5206\u306a\u30b9\u30da\u30fc\u30b9\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p>\u5efa\u7269\u306e\u69cb\u9020\u304c\u5909\u5727\u5668\u306e\u91cd\u91cf\u306b\u8010\u3048\u3089\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u5f15\u304d\u8fbc\u307f\u30fb\u5f15\u304d\u51fa\u3057\u65b9\u6cd5\u3092\u6c7a\u5b9a\u3057\u3001\u5fc5\u8981\u306a\u30b9\u30da\u30fc\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Comprehensive_Evaluation_and_Analysis\"><\/span>\u7dcf\u5408\u8a55\u4fa1\u3068\u5206\u6790<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6700\u5f8c\u306b\u3001\u521d\u671f\u8cbb\u7528\u3001\u904b\u8ee2\u8cbb\u7528\u3001\u4fdd\u5b88\u8cbb\u7528\u306a\u3069\u3092\u542b\u3081\u305f\u7dcf\u6240\u6709\u30b3\u30b9\u30c8\u5206\u6790\u3092\u81ea\u793e\u306e\u72b6\u6cc1\u306b\u57fa\u3065\u3044\u3066\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u88fd\u9020\u696d\u8005\u306e\u8cc7\u683c\u3084\u5909\u5727\u5668\u30b3\u30a2\u90e8\u54c1\u306e\u54c1\u8cea\u306b\u95a2\u3059\u308b\u4fe1\u983c\u6027\u8a55\u4fa1\u3082\u5b9f\u65bd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u304a\u4f4f\u307e\u3044\u306e\u5730\u57df\u306b\u53b3\u3057\u3044\u74b0\u5883\u898f\u5236\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u88fd\u54c1\u304c\u5730\u57df\u306e\u7fa9\u52d9\u7684\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\u57fa\u6e96\u304a\u3088\u3073\u74b0\u5883\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-47583\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Dry-Type-Transformers-2.jpg\" alt=\"\u4e7e\u5f0f\u5909\u5727\u5668\uff08\uff12\uff09\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Dry-Type-Transformers-2.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Dry-Type-Transformers-2-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Dry-Type-Transformers-2-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/01\/Dry-Type-Transformers-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/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=\"Why_Is_the_Size_of_a_Three_Phase_Transformer_So_Important\"><\/span>\u4e09\u76f8\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u304c\u306a\u305c\u305d\u308c\u307b\u3069\u91cd\u8981\u306a\u306e\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5909\u5727\u5668\u306e\u7269\u7406\u7684\u306a\u30b5\u30a4\u30ba\u306f\u3001\u30b9\u30e0\u30fc\u30ba\u306a\u8a2d\u7f6e\u3092\u5de6\u53f3\u3057\u307e\u3059\u3002\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\uff08kVA\uff09\u306f\u3001\u8abf\u9054\u30b3\u30b9\u30c8\u3068\u904b\u7528\u4e0a\u306e\u5b89\u5168\u6027\u306b\u5927\u304d\u304f\u5f71\u97ff\u3057\u307e\u3059\u3002\u9069\u5207\u306a\u30b5\u30a4\u30ba\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u5909\u5727\u5668\u304c\u6700\u9069\u306a\u8ca0\u8377\u7387\u3067\u52b9\u7387\u7684\u304b\u3064\u78ba\u5b9f\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u4e0a\u6d41\u5074\u304a\u3088\u3073\u4e0b\u6d41\u5074\u306e\u30b1\u30fc\u30d6\u30eb\u3001\u30b9\u30a4\u30c3\u30c1\u3001\u4fdd\u8b77\u88c5\u7f6e\u306e\u9078\u5b9a\u306b\u3082\u5f71\u97ff\u3057\u3001\u96fb\u529b\u4f9b\u7d66\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u5b89\u5b9a\u7a3c\u50cd\u306e\u57fa\u76e4\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_A_Larger_Transformer_Size_Necessarily_Safer\"><\/span>\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u5fc5\u305a\u3057\u3082\u5b89\u5168\u306b\u306a\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5fc5\u305a\u3057\u3082\u305d\u3046\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3059\u304e\u308b\u3068\u77ed\u7d61\u96fb\u6d41\u304c\u5897\u52a0\u3057\u3001 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u56de\u8def\u906e\u65ad\u5668\u306e\u7b50\u4f53\/\">\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\u30fc<\/a>\u00a0\u305d\u3057\u3066\u4fdd\u8b77\u88c5\u7f6e\u3082\u91cd\u8981\u3067\u3059\u3002\u6a5f\u5668\u306e\u6027\u80fd\u304c\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u6545\u969c\u6642\u306b\u96fb\u6d41\u3092\u9069\u6642\u306b\u906e\u65ad\u3067\u304d\u305a\u3001\u3088\u308a\u6df1\u523b\u306a\u4e8b\u6545\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5b89\u5168\u6027\u306f\u7269\u7406\u7684\u306a\u5927\u304d\u3055\u3067\u306f\u306a\u304f\u3001\u5bb9\u91cf\u306e\u9069\u5408\u6027\u3068\u4fdd\u8b77\u306e\u5b8c\u5168\u6027\u306b\u304b\u304b\u3063\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_Are_Amorphous_Alloy_Transformers_Large_and_Expensive\"><\/span>\u30a2\u30e2\u30eb\u30d5\u30a1\u30b9\u5408\u91d1\u30c8\u30e9\u30f3\u30b9\u306f\u306a\u305c\u5927\u578b\u3067\u9ad8\u4fa1\u306a\u306e\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5927\u578b\u5316\u306e\u7406\u7531\u306f\u3001\u78c1\u6c17\u98fd\u548c\u5bc6\u5ea6\u304c\u6bd4\u8f03\u7684\u4f4e\u3044\u3053\u3068\u306b\u3042\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u540c\u3058\u78c1\u675f\u3092\u5f97\u308b\u306b\u306f\u9244\u5fc3\u306e\u65ad\u9762\u7a4d\u3092\u5927\u304d\u304f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u7d50\u679c\u3068\u3057\u3066\u4f53\u7a4d\u3068\u91cd\u91cf\u304c\u5897\u52a0\u3059\u308b\u3002\u9ad8\u4fa1\u683c\u306f\u3001\u6750\u6599\u8cbb\u306e\u9ad8\u3055\u3001\u52a0\u5de5\u306e\u96e3\u3057\u3055\u3001\u305d\u3057\u3066\u7701\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u679c\u306b\u3088\u308b\u4fa1\u683c\u4e0a\u6607\u306b\u8d77\u56e0\u3059\u308b\u3002\u5e74\u9593\u3092\u901a\u3057\u3066\u9023\u7d9a\u904b\u8ee2\u3092\u884c\u3044\u3001\u9577\u671f\u7684\u306a\u7701\u96fb\u529b\u3092\u91cd\u8996\u3059\u308b\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u308b\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>KDM\u306f\u3001\u9ad8\u54c1\u8cea\u306a\u96fb\u6c17\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u3092\u63d0\u4f9b\u3059\u308b\u30ab\u30b9\u30bf\u30e0\u30e1\u30fc\u30ab\u30fc\u3067\u3059\u3002\u5f53\u793e\u306e\u88fd\u54c1\u306f\u3059\u3079\u3066\u3001\u6700\u9ad8\u7d1a\u306e\u7d20\u6750\u3068\u9ad8\u5ea6\u306a\u52a0\u5de5\u6280\u8853\u3092\u7528\u3044\u3066\u88fd\u9020\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u306e\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306b\u3001\u8907\u6570\u306e\u8a8d\u8a3c\u3092\u53d6\u5f97\u3057\u3066\u3044\u307e\u3059\u3002\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306e\u3054\u8981\u671b\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/www.kdmsteel.com\/ja\/\u63a5\u89e6\/\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a>. \u8fc5\u901f\u306b\u5bfe\u5fdc\u3057\u3001\u304a\u5ba2\u69d8\u306b\u3054\u6e80\u8db3\u3044\u305f\u3060\u3051\u308b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u3054\u63d0\u4f9b\u3044\u305f\u3057\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>As the cornerstone of the power network, the three-phase transformer has various uses such as boost transmission, buck distribution, and electrical isolation. The size of a three-phase transformer is crucial for both initial investment and operational performance. How to choose the transformer size that matches your voltage requirements?This article discusses the importance and influence factors [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":47595,"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":"","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-47590","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 v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Three Phase Transformer Sizes - 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\u306e\u30b5\u30a4\u30ba\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Three Phase Transformer Sizes - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"As the cornerstone of the power network, the three-phase transformer has various uses such as boost transmission, buck distribution, and electrical isolation. 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