{"id":10764,"date":"2026-08-29T23:43:18","date_gmt":"2026-08-29T15:43:18","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=10764"},"modified":"2026-08-29T23:43:18","modified_gmt":"2026-08-29T15:43:18","slug":"key-questions-epcs-must-ask-before-finalizing-a-transformer-supplier-complete-guide","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/news\/key-questions-epcs-must-ask-before-finalizing-a-transformer-supplier-complete-guide\/","title":{"rendered":"\u30c8\u30e9\u30f3\u30b9\u4f9b\u7d66\u696d\u8005\u3092\u6700\u7d42\u6c7a\u5b9a\u3059\u308b\u524d\u306bEPC\u304c\u5fc5\u305a\u5c0b\u306d\u308b\u3079\u304d\u91cd\u8981\u306a\u8cea\u554f | \u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"<p>EPC\u4f1a\u793e\u304c\u30d5\u30a3\u30ea\u30d4\u30f3\u3067230 MW\u306e\u30bd\u30fc\u30e9\u30fc\uff0b\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u5951\u7d04\u3092\u7de0\u7d50\u3057\u307e\u3057\u305f\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u300126\u9031\u9593\u4ee5\u5185\u306b\u73fe\u5834\u306b\u30c8\u30e9\u30f3\u30b9\u3092\u7d0d\u54c1\u3059\u308b\u3088\u3046\u8981\u6c42\u3057\u3066\u3044\u307e\u3059\u3002\u8abf\u9054\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306f\u3001\u4fa1\u683c\u304c\u307b\u307c40\uff05\u7570\u306a\u308b2\u3064\u306e\u898b\u7a4d\u3082\u308a\u3068\u30013\u793e\u306e\u5019\u88dc\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30bf\u30a4\u30e0\u30c6\u30fc\u30d6\u30eb\u306f\u53b3\u5b88\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u306b\u7f6e\u304b\u308c\u305f\u3053\u3068\u304c\u3042\u308b\u306a\u3089\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u3092\u9078\u3076\u3053\u3068\u304c\u3001\u5909\u96fb\u6240\u304c\u6642\u9593\u901a\u308a\u306b\u7a3c\u50cd\u3067\u304d\u308b\u304b\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u640d\u5bb3\u8ce0\u511f\u6761\u9805\u306b\u57fa\u3065\u3044\u3066\u7f70\u91d1\u3092\u8acb\u6c42\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3059\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001EPC\u304c\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u3092\u9078\u5b9a\u3059\u308b\u969b\u306b\u8abf\u67fb\u3057\u8003\u616e\u3059\u3079\u304d\u3055\u307e\u3056\u307e\u306a\u5074\u9762\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306e\u305f\u3081\u306e\u52b9\u679c\u7684\u306a\u30b9\u30b3\u30a2\u30ea\u30f3\u30b0\u30de\u30c8\u30ea\u30c3\u30af\u30b9\u3092\u69cb\u7bc9\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u88fd\u9020\u80fd\u529b\u3001\u8a66\u9a13\u306e\u8a3c\u660e\u3001\u8a8d\u8a3c\u3001\u4fa1\u683c\u653f\u7b56\u3001\u5fc5\u8981\u306a\u6587\u66f8\u3001\u30a2\u30d5\u30bf\u30fc\u30b5\u30fc\u30d3\u30b9\u306b\u3064\u3044\u3066\u89e6\u308c\u3001\u9069\u5207\u306a\u6bd4\u8f03\u306e\u305f\u3081\u306b\u5fc5\u8981\u306a\u6570\u5024\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u30ac\u30a4\u30c9\u306e\u6700\u5f8c\u306b\u306f\u3001315kVA\u30c8\u30e9\u30f3\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084120 MVA\u30c8\u30e9\u30f3\u30b9\u3092\u542b\u3080\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u7528\u3067\u304d\u308b\u518d\u5229\u7528\u53ef\u80fd\u306a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u304c\u5f97\u3089\u308c\u307e\u3059\u3002.<\/p>\n<blockquote><p>\u7c21\u6f54\u306b\u8a00\u3048\u3070\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u88fd\u9020\u696d\u8005\u3092\u9078\u5b9a\u3059\u308b\u524d\u306b\u3001EPC\u306f5\u3064\u306e\u61f8\u5ff5\u4e8b\u9805\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a(1) \u88fd\u9020\u80fd\u529b\u3068\u73fe\u5b9f\u7684\u306a\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u3001\u901a\u5e38\u306f\u914d\u96fb\u30c8\u30e9\u30f3\u30b9\u306e\u5834\u54088\u301c16\u9031\u9593\u3001\u5927\u578b\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u306e\u5834\u5408\u306f20\u301c32\u9031\u9593\uff1b(2) \u9069\u5207\u306a\u8a66\u9a13\u65bd\u8a2d\u306e\u6240\u6709\u3068IEC\/IEEE\u6e96\u62e0\u306e\u8a3c\u660e\uff1b(3) \u5e73\u5747\u7684\u306a\u6cb9\u6d78\u914d\u96fb\u30e6\u30cb\u30c3\u30c8\u306e\u30b3\u30b9\u30c8\u304c$3000\u301c$45,000\u3001\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u304c$50,000\u304b\u3089$1.2\u767e\u4e07\u307e\u3067\u306e\u5b8c\u5168\u306a\u4fa1\u683c\u60c5\u5831\uff1b(4) \u6280\u8853\u6587\u66f8\u3001\u56f3\u9762\u3001\u8a66\u9a13\u5831\u544a\u66f8\u3001\u6e96\u62e0\u8a18\u9332\u3092\u63d0\u4f9b\u3059\u308b\u4f1a\u793e\u306e\u80fd\u529b\u306b\u95a2\u3059\u308b\u77e5\u8b58\uff1b(5) \u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306e\u30b5\u30fc\u30d3\u30b9\u30b3\u30df\u30c3\u30c8\u30e1\u30f3\u30c8\u3001\u73fe\u5834\u3067\u306e\u8a66\u904b\u8ee2\u308412\u301c60\u30f6\u6708\u306e\u4fdd\u8a3c\u3092\u542b\u3080\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10765\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Key-Questions-Epcs-Must-Ask-Before-Finalizing-A-Transformer-Supplier-Complete-Guide.webp\" alt=\"Key Questions Epcs Must Ask Before Finalizing A Transformer Supplier Complete Guide\" width=\"1448\" height=\"1086\" \/><\/p>\n<hr \/>\n<h2 id=\"why-supplier-matters\">\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u9078\u5b9a\u304cEPC\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30ea\u30b9\u30af\u3092\u5b9a\u7fa9\u3059\u308b\u7406\u7531<\/h2>\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3001\u8abf\u9054\u3001\u5efa\u8a2d\uff08EPC\uff09\u8acb\u8ca0\u696d\u8005\u306b\u3068\u3063\u3066\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u91cd\u8981\u6027\u306f\u904e\u5c0f\u8a55\u4fa1\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u30d1\u30b9\u3092\u63a8\u9032\u3059\u308b\u8981\u7d20\u306e\u4e00\u3064\u3067\u3042\u308a\u3001\u9577\u3044\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u3092\u6301\u3061\u3001\u5931\u6557\u3059\u308b\u3068\u5909\u96fb\u6240\u5168\u4f53\u304c\u6a5f\u80fd\u3057\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002Cigr\u00e9 A2.37\u8abf\u67fb\u306b\u57fa\u3065\u304f\u3068\u3001\u7d76\u7e01\u72b6\u614b\u3068\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u304c\u65e9\u671f\u6545\u969c\u306e\u4e3b\u306a\u539f\u56e0\u3067\u3042\u308a\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u5de5\u5834\u53d7\u5165\u8a66\u9a13\u3067\u691c\u51fa\u3059\u3079\u304d\u5074\u9762\u306b\u5e30\u7740\u3057\u307e\u3059\u3002.<\/p>\n<p>10 MVA\u306e\u5909\u5727\u5668\u306e\u4fa1\u683c\u306f\u3001\u5e73\u5747\u7684\u306a\u5909\u96fb\u6240\u306e\u4e88\u7b97\u306e5 \u2013 15%\u307e\u3067\u4f4e\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001100 MVA\u306e\u30e6\u30cb\u30c3\u30c8\u306f\u4e3b\u8981\u306a\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u8cc7\u672c\u6295\u8cc7\u306e\u7d0425 \u2013 40%\u3092\u5360\u3081\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002$400,000\u306e\u4fa1\u5024\u306e\u5909\u5727\u5668\u306712%\u306e\u7bc0\u7d04\u304c\u3042\u308c\u3070\u3001$48,000\u306e\u30d7\u30e9\u30b9\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30d5\u30ed\u30fc\u3092\u751f\u307f\u51fa\u3057\u30011\u56de\u306e\u505c\u96fb\u304c$50,000\u304b\u3089$2\u767e\u4e07\u306b\u53ca\u3076\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u306f\u8a00\u3046\u307e\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u5b89\u4fa1\u306a\u4fa1\u683c\u306f\u3001\u3057\u3070\u3057\u3070\u9577\u3044\u30b5\u30d7\u30e9\u30a4\u30c1\u30a7\u30fc\u30f3\u30ea\u30b9\u30af\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<h2 id=\"what-epc-procurement\">EPC\u306b\u3068\u3063\u3066\u5909\u5727\u5668\u8abf\u9054\u304c\u7570\u306a\u308b\u7406\u7531<\/h2>\n<p>EPC\u304c\u30aa\u30d5\u30fb\u30b6\u30fb\u30b7\u30a7\u30eb\u30d5\u3067\u8cfc\u5165\u3059\u308b\u307b\u3068\u3093\u3069\u306e\u6a5f\u5668\u306f\u3001\u6b20\u9665\u304c\u898b\u3064\u304b\u3063\u305f\u5834\u5408\u306b\u4ea4\u63db\u53ef\u80fd\u3067\u3059\u304c\u3001\u5909\u5727\u5668\u306f\u30ab\u30b9\u30bf\u30e0\u30e1\u30a4\u30c9\u3067\u3042\u308a\u3001\u5dfb\u7dda\u69cb\u6210\u3001\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u3001\u51b7\u5374\u57fa\u6e96\u3001\u640d\u5931\u306f\u3059\u3079\u3066\u7279\u5b9a\u306e\u30b0\u30ea\u30c3\u30c9\u30b3\u30fc\u30c9\u3068\u5834\u6240\u306e\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u8abf\u9054\u306f\u4fa1\u683c\u8a2d\u5b9a\u306e\u524d\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a\u4e3b\u8981\u306aEPC\u4f01\u696d\u306f\u3001IEC 60076-1\u304a\u3088\u3073IEC 60076-11\uff08\u5317\u7c73\u5411\u3051\u306eIEEE C57.12.00\uff09\u3092\u53c2\u7167\u3059\u308bRFQ\u3092\u767a\u884c\u3057\u3001\u5404\u30dd\u30a4\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u66f8\u9762\u3067\u306e\u56de\u7b54\u3092\u6c42\u3081\u307e\u3059\u3002.<\/p>\n<h2 id=\"capacity-leadtime\">\u88fd\u9020\u80fd\u529b\u3068\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306b\u95a2\u3059\u308b\u8cea\u554f<\/h2>\n<p>\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306f\u6700\u3082\u91cd\u8981\u306a\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u78ba\u8a8d\u3059\u308b\u306e\u304c\u6700\u3082\u8907\u96d1\u306a\u6570\u5b57\u3067\u3059\u3002\u5019\u88dc\u8005\u306b\u6b21\u306e\u8cea\u554f\u3092\u3057\u3001\u3042\u3044\u307e\u3044\u306a\u56de\u7b54\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n<ul>\n<li>\u73fe\u5728\u306e\u53d7\u6ce8\u6b8b\u306f\u3069\u306e\u304f\u3089\u3044\u3067\u3001\u6bce\u6708\u4f55\u30e6\u30cb\u30c3\u30c8\u51fa\u8377\u3067\u304d\u307e\u3059\u304b\uff1f\u3042\u308b\u30e1\u30fc\u30ab\u30fc\u306f\u6708\u306b500\u30e6\u30cb\u30c3\u30c8\u3092\u7d04\u675f\u3057\u3066\u3044\u307e\u3059\u304c\u300160%\u306e\u80fd\u529b\u3057\u304b\u4f7f\u7528\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u4ed6\u306e\u8ab0\u304b\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/li>\n<li>\u9031\u3054\u3068\u306e\u751f\u7523\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3068\u3001\u6700\u8fd1\u5b8c\u4e86\u3057\u305f\u6ce8\u6587\u306e\u6700\u5f8c\u306e3\u4eba\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u540d\u524d\u3092\u6559\u3048\u3066\u3044\u305f\u3060\u3051\u307e\u3059\u304b\uff1f\u96fb\u8a71\u3067\u306e\u53c2\u7167\u306f\u3001\u30d1\u30f3\u30d5\u30ec\u30c3\u30c8\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u512a\u308c\u3066\u3044\u307e\u3059\u3002.<\/li>\n<li>\u30b3\u30a2\u306e\u30e9\u30df\u30cd\u30fc\u30b7\u30e7\u30f3\u3001\u5dfb\u7dda\u3001\u30bf\u30f3\u30af\u306e\u88fd\u9020\u3092\u793e\u5185\u3067\u884c\u3063\u3066\u3044\u307e\u3059\u304b\uff1f\u793e\u5185\u751f\u7523\u30d7\u30ed\u30bb\u30b9\u306f\u77ed\u3044\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306b\u9069\u3057\u3066\u304a\u308a\u3001\u5b8c\u5168\u306a\u30a2\u30a6\u30c8\u30bd\u30fc\u30b7\u30f3\u30b0\u306f\u8abf\u6574\u306e\u554f\u984c\u306e\u30ea\u30b9\u30af\u3092\u9ad8\u3081\u307e\u3059\u3002.<\/li>\n<li>\u5178\u578b\u7684\u306a10 MVA 33\/11 kV\u5909\u5727\u5668\u306e\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306f\u3069\u306e\u304f\u3089\u3044\u3067\u3059\u304b\uff1f\u73fe\u5b9f\u7684\u306a\u6570\u5b57\u306f\u3001\u6a19\u6e96\u306e\u914d\u96fb\u5909\u5727\u5668\u306710-14\u9031\u9593\u3001\u4e2d\u578b\u96fb\u529b\u306714-20\u9031\u9593\u3001100 MVA\u5909\u5727\u5668\u306722-32\u9031\u9593\u3067\u3059\u3002.<\/li>\n<li>\u914d\u9001\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u30a4\u30f3\u30b3\u30bf\u30fc\u30e0\u30ba\u306f\u4f55\u3067\u3059\u304b\u3001\u305d\u3057\u3066\u6d77\u4e0a\u8f38\u9001\u30ea\u30b9\u30af\u306b\u5bfe\u3057\u3066\u8ab0\u304c\u8cac\u4efb\u3092\u8ca0\u3044\u307e\u3059\u304b\uff1fCIF\u4fa1\u683c\u306f\u9b45\u529b\u7684\u306b\u805e\u3053\u3048\u307e\u3059\u304c\u3001\u4e0d\u9069\u5207\u306a\u68b1\u5305\u304c\u914d\u9054\u6642\u306b\u30d0\u30c3\u30b7\u30f3\u30b0\u306e\u640d\u50b7\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p>\u898b\u7a4d\u3082\u308a\u3055\u308c\u305f\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306b15-20%\u306e\u4e88\u5099\u8cbb\u3092\u8ffd\u52a0\u3057\u3001\u6700\u8fd1\u306e\u6d77\u5916\u9867\u5ba22\u793e\u304b\u3089\u63d0\u4f9b\u3055\u308c\u305f\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3001\u5951\u7d04\u306b\u304a\u3051\u308b\u30de\u30a4\u30eb\u30b9\u30c8\u30fc\u30f3\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u6c42\u3081\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10766\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Testing-Certification-and-Standards-Compliance-Questions.webp\" alt=\"\u30c6\u30b9\u30c8\u3001\u8a8d\u8a3c\u3001\u304a\u3088\u3073\u57fa\u6e96\u9075\u5b88\u306b\u95a2\u3059\u308b\u8cea\u554f\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"testing-certification\">\u30c6\u30b9\u30c8\u3001\u8a8d\u8a3c\u3001\u304a\u3088\u3073\u57fa\u6e96\u9075\u5b88\u306b\u95a2\u3059\u308b\u8cea\u554f<\/h2>\n<p>\u8a8d\u8a3c\u306f\u3001\u8abf\u9054\u30c1\u30fc\u30e0\u304c\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u78ba\u4fdd\u3059\u308b\u304b\u3001\u5c06\u6765\u306e\u6f5c\u5728\u7684\u306a\u8cac\u4efb\u3092\u751f\u3080\u304b\u306e\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u8cea\u554f\u306f\u3001CE\u30de\u30fc\u30ad\u30f3\u30b0\u3092\u8d85\u3048\u3066\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002CE\u30de\u30fc\u30ad\u30f3\u30b0\u306f\u81ea\u5df1\u8a8d\u8a3c\u306e\u5ba3\u8a00\u306b\u904e\u304e\u305a\u3001\u5909\u5727\u5668\u306e\u9ad8\u6027\u80fd\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n<ul>\n<li>\u3042\u306a\u305f\u306e\u5de5\u5834\u306fISO 9001\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u304b\u3001\u305d\u3057\u3066\u79c1\u305f\u3061\u306f\u305d\u308c\u3092\u76e3\u67fb\u3067\u304d\u307e\u3059\u304b\uff1f\u4fe1\u983c\u3067\u304d\u308b\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306e\u307f\u304c\u6301\u3063\u3066\u304a\u308a\u3001\u907f\u3051\u3089\u308c\u306a\u3044\u8cea\u554f\u306f\u3001\u73fe\u5730\u76e3\u67fb\u3092\u5b9f\u65bd\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u3067\u3059\u3002.<\/li>\n<li>IEC 60076\u306b\u5f93\u3063\u305f\u578b\u5f0f\u8a66\u9a13\u5831\u544a\u66f8\u3092\u3001\u8a8d\u5b9a\u6a5f\u95a2\u306b\u3088\u3063\u3066\u7acb\u4f1a\u3044\u306e\u3082\u3068\u3067\u63d0\u4f9b\u3067\u304d\u307e\u3059\u304b\uff1f\u6e29\u5ea6\u4e0a\u6607\u3001\u96f7\u30a4\u30f3\u30d1\u30eb\u30b9\u3001\u77ed\u7d61\u8010\u529b\u8a66\u9a13\u5831\u544a\u66f8\u3092\u78ba\u8a8d\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3088\u3063\u3066\u7f72\u540d\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>\u30c8\u30e9\u30f3\u30b9\u3092\u88fd\u9020\u3059\u308b\u969b\u306b\u9075\u5b88\u3057\u3066\u3044\u308b\u57fa\u6e96\u306f\u4f55\u3067\u3059\u304b\uff1fIEC 60076-1\/-5\/-11\u307e\u305f\u306fIEEE C57.12.00\u3067\u3059\u304b\uff1f\u7570\u306a\u308b\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u304b\u3089\u306e\u898b\u7a4d\u3082\u308a\u3092\u78ba\u8a8d\u3059\u308b\u524d\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>\u3042\u306a\u305f\u306e\u8a66\u9a13\u624b\u9806\u306f\u4f55\u3067\u3059\u304b\uff1f\u5dfb\u7dda\u62b5\u6297\u3001\u30bf\u30fc\u30f3\u6bd4\u3001\u30d9\u30af\u30c8\u30eb\u30b0\u30eb\u30fc\u30d7\u3001\u7121\u8ca0\u8377\/\u8ca0\u8377\u640d\u5931\u3001\u7d76\u7e01\u62b5\u6297\u3001\u8a98\u5c0e\u96fb\u5727\u8a66\u9a13\u3092\u542b\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u5de5\u5834\u8a66\u9a13\u5f8c\u306b\u90e8\u5206\u653e\u96fb\u6e2c\u5b9a\u3084DGA\u306a\u3069\u306e\u8ffd\u52a0\u8a66\u9a13\u3092\u5b9f\u65bd\u3067\u304d\u307e\u3059\u304b\uff1f\u3053\u308c\u3089\u306e\u8a66\u9a13\u306f\u3001\u51fa\u8377\u524d\u306b\u7d76\u7e01\u6b20\u9665\u3092\u691c\u51fa\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p>\u5e02\u5834\u306e\u30ea\u30fc\u30c0\u30fc\u306f\u3001\u88fd\u54c1\u4fa1\u683c\u306e\u7d045\u301c10\uff05\u3092\u8a66\u9a13\u306b\u5272\u308a\u5f53\u3066\u3066\u3044\u307e\u3059\u3002\u898b\u7a4d\u3082\u308a\u304c\u5927\u5e45\u306b\u4f4e\u3044\u5834\u5408\u306f\u3001\u3069\u306e\u8a66\u9a13\u304c\u9664\u5916\u3055\u308c\u305f\u306e\u304b\u3092\u660e\u78ba\u306b\u3059\u308b\u3088\u3046\u306b\u6c42\u3081\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p>\u88fd\u54c1\u3068\u4e00\u7dd2\u306b\u9001\u4ed8\u3055\u308c\u308b\u6587\u66f8\u30d1\u30c3\u30af\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u88fd\u54c1\u306e\u627f\u8a8d\u3001\u4fdd\u967a\u3001\u4fdd\u8a3c\u8acb\u6c42\u3092\u6c7a\u5b9a\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7d0d\u54c1\u7269<\/th>\n<th>\u30bf\u30a4\u30df\u30f3\u30b0<\/th>\n<th>\u306a\u305c\u91cd\u8981\u304b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>GA \/ \u30b3\u30a2\u304a\u3088\u3073\u30b3\u30a4\u30eb\u306e\u56f3\u9762<\/td>\n<td>\u6ce8\u6587\u304b\u30892\u9031\u9593\u4ee5\u5185<\/td>\n<td>\u571f\u6728\u304a\u3088\u3073\u69cb\u9020\u8a2d\u8a08<\/td>\n<\/tr>\n<tr>\n<td>\u578b\u5f0f\u8a66\u9a13\u5831\u544a\u66f8<\/td>\n<td>\u898b\u7a4d\u3082\u308a\u3068\u3068\u3082\u306b<\/td>\n<td>\u57fa\u6e96\u9075\u5b88\u306e\u8a3c\u62e0<\/td>\n<\/tr>\n<tr>\n<td>\u5b9a\u671f\u8a66\u9a13\u5831\u544a\u66f8<\/td>\n<td>\u5404\u51fa\u8377\u6642\u306b<\/td>\n<td>\u53d7\u5165\u308c\u304a\u3088\u3073\u4fdd\u8a3c<\/td>\n<\/tr>\n<tr>\n<td>O&amp;M\u30de\u30cb\u30e5\u30a2\u30eb<\/td>\n<td>\u59cb\u52d5\u524d<\/td>\n<td>\u30aa\u30da\u30ec\u30fc\u30bf\u30fc\u8a13\u7df4<\/td>\n<\/tr>\n<tr>\n<td>\u4fdd\u8a3c\u8a3c\u660e\u66f8<\/td>\n<td>\u6700\u7d42\u8acb\u6c42\u66f8\u3068\u3068\u3082\u306b<\/td>\n<td>\u8acb\u6c42\u306e\u6839\u62e0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"engineering-support\">\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30b5\u30dd\u30fc\u30c8\u304a\u3088\u3073\u5de5\u5834\u53d7\u5165\u8a66\u9a13<\/h2>\n<p>\u30c8\u30e9\u30f3\u30b9\u3068\u4fdd\u8b77\u30ea\u30ec\u30fc\u3001\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u5236\u5fa1\u88c5\u7f6e\u3001SCADA\u3068\u306e\u7d71\u5408\u304c\u975e\u5e38\u306b\u5fc5\u8981\u3067\u3059\u3002\u3053\u306e\u70b9\u306b\u3064\u3044\u3066\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u306b\u76f8\u8ac7\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n<ul>\n<li>\u6ce8\u6587\u53d7\u9818\u5f8c2\u9031\u9593\u4ee5\u5185\u306bGA\u3001\u30b3\u30a2\uff06\u30b3\u30a4\u30eb\u304a\u3088\u3073\u7aef\u5b50\u30ec\u30a4\u30a2\u30a6\u30c8\u56f3\u9762\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u304b\uff1f\u56f3\u9762\u306e\u7d0d\u54c1\u9045\u5ef6\u306f\u3001\u571f\u6728\u5de5\u4e8b\u3084\u69cb\u9020\u8a2d\u8a08\u306e\u9045\u5ef6\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002.<\/li>\n<li>\u9ad8\u9ad8\u5ea6\uff081000m\u4ee5\u4e0a\uff09\u3001\u9ad8\u6e7f\u5ea6\u3001\u5730\u9707\u5e2f\u3001\u307e\u305f\u306f\u5869\u5206\u3092\u542b\u3080\u6cbf\u5cb8\u7a7a\u6c17\u306b\u9069\u3057\u305f\u8a2d\u8a08\u306b\u5909\u66f4\u3067\u304d\u307e\u3059\u304b\uff1fIEC 60076-1\u57fa\u6e96\u304c\u9ad8\u5ea6\u306b\u3088\u308b\u5b9a\u683c\u4f4e\u4e0b\u306b\u3064\u3044\u3066\u8a00\u53ca\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3067\u3059\u3002\u71b1\u5e2f\u6c17\u5019\u3067\u306e\u904b\u8ee2\u304c\u4e0d\u53ef\u80fd\u306a\u88fd\u9020\u696d\u8005\u306f\u3001\u5b9a\u683c\u4ee5\u4e0b\u306e\u30d6\u30c3\u30b7\u30f3\u30b0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002.<\/li>\n<li>\u81ea\u793e\u306e\u30bf\u30c3\u30d7\u30c1\u30a7\u30f3\u30b8\u30e3\u30fc\u304a\u3088\u3073\u30d6\u30b3\u30eb\u30c4\u30ea\u30ec\u30fc\u306e\u8ad6\u7406\u3068\u306e\u30ea\u30ec\u30fc\u8a2d\u5b9a\u306e\u8abf\u6574\u3092\u78ba\u8a8d\u3059\u308b\u6e96\u5099\u306f\u3067\u304d\u3066\u3044\u307e\u3059\u304b\uff1f\u3053\u308c\u306f\u3001\u59cb\u52d5\u6642\u306e\u9045\u5ef6\u306e\u975e\u5e38\u306b\u4e00\u822c\u7684\u306a\u7406\u7531\u3067\u3059\u3002.<\/li>\n<li>\u3042\u306a\u305f\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u59cb\u52d5\u524d\u306b\u5229\u7528\u53ef\u80fd\u3067\u3059\u304b\uff1f\u3053\u308c\u306f\u3001\u59cb\u52d5\u6bb5\u968e\u3067\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u73fe\u5834\u3078\u306e1\u301c2\u56de\u306e\u8a2a\u554f\u3092\u30ab\u30d0\u30fc\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p>\u53d7\u5165\u8a66\u9a13\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u304c\u51fa\u8377\u3055\u308c\u308b\u306e\u3092\u6b62\u3081\u308b\u6700\u5f8c\u306e\u6a5f\u4f1a\u3067\u3059\u3002EPC\u306f\u6b21\u306e\u8cea\u554f\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u5404\u6a5f\u5668\u306eFAT\u3092\u81ea\u793e\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u307e\u305f\u306f\u7b2c\u4e09\u8005\u304c\u7acb\u4f1a\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304b\uff1f\u8907\u6570\u6a5f\u5668\u306e\u5951\u7d04\u306e\u5834\u5408\u3001\u7acb\u4f1a\u3044\u8a66\u9a13\u304c100%\u306e\u30b1\u30fc\u30b9\u3067\u5b8c\u4e86\u3059\u308b\u3088\u3046\u306b\u4ea4\u6e09\u3059\u308b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>FAT\u4e2d\u306b\u4efb\u610f\u306e\u6a5f\u5668\u304c\u5b9a\u671f\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f\u6a5f\u5668\u306e\u518d\u8a66\u9a13\u306b\u95a2\u3059\u308b\u898f\u5247\u3068\u898f\u5236\u306b\u3064\u3044\u3066\u8a71\u3057\u5408\u3046\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>Will you provide test report package for each shipment? It is very important for acceptance, insurance, and warranty reasons.<\/li>\n<li>What does the quality control cover regarding insulation? Ask about drying cycles, vacuum filling, oil humidity below 10-15 ppm, etc.<\/li>\n<li>Is the short-circuit withstand design covered by IEC 60076-5?<\/li>\n<\/ul>\n<h2 id=\"transformer-types\">Transformer Types EPCs Procure (Classification Table)<\/h2>\n<p>In EPC projects carried out in the fields of renewables, utilities, and industry, there is a need to procure several transformer types with different completion times and costs.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u5178\u578b\u7684\u306a\u5b9a\u683c\u7bc4\u56f2<\/th>\n<th>\u51b7\u5374<\/th>\n<th>Typical Lead Time<\/th>\n<th>Price Range (FOB)<\/th>\n<th>Key Procurement Concern<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Distribution transformer (pole\/pad)<\/td>\n<td>25\u20132,500 kVA<\/td>\n<td>Mineral oil \/ dry-type<\/td>\n<td>6\u201312 weeks<\/td>\n<td>$1,200\u2013$25,000<\/td>\n<td>Loss levels, moisture ingress<\/td>\n<\/tr>\n<tr>\n<td>Skid \/ unit substation transformer<\/td>\n<td>315\u20132,500 kVA<\/td>\n<td>Mineral oil \/ cast resin<\/td>\n<td>8\u201314 weeks<\/td>\n<td>$8,000\u2013$45,000<\/td>\n<td>Enclosure rating, cable entry<\/td>\n<\/tr>\n<tr>\n<td>Medium power transformer<\/td>\n<td>5\u201340 MVA<\/td>\n<td>Oil with ONAN\/ONAF<\/td>\n<td>12\u201320 weeks<\/td>\n<td>$45,000\u2013$250,000<\/td>\n<td>On-load tap changer, losses<\/td>\n<\/tr>\n<tr>\n<td>Large power transformer<\/td>\n<td>60\u2013300 MVA<\/td>\n<td>Oil, ODAF\/ODWF<\/td>\n<td>24\u201340 weeks<\/td>\n<td>$300,000\u2013$1.5 million<\/td>\n<td>Type tests, transport weight<\/td>\n<\/tr>\n<tr>\n<td>Dry-type \/ cast-resin transformer<\/td>\n<td>100\u201310,000 kVA<\/td>\n<td>Air, F0\/F1 class<\/td>\n<td>8\u201314 weeks<\/td>\n<td>$6,000\u2013$90,000<\/td>\n<td>Partial discharge, fire safety<\/td>\n<\/tr>\n<tr>\n<td>Specialty (furnace, rectifier, earthing)<\/td>\n<td>\u30ab\u30b9\u30bf\u30e0<\/td>\n<td>Oil \/ dry<\/td>\n<td>16\u201330 weeks<\/td>\n<td>$30,000\u2013$600,000<\/td>\n<td>Custom winding design<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"specifications\">Key Specification Parameters to Verify<\/h2>\n<p>When comparing bids, one needs to perform normalization of the technical requirements between different types of transformers, so the following parameters should be outlined in the RFQ and confirmed in every quotation:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>What It Controls<\/th>\n<th>\u5178\u578b\u7684\u306a\u5024<\/th>\n<th>Relevant Standard<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Rated power (kVA\/MVA)<\/td>\n<td>Capacity and size<\/td>\n<td>100 kVA\u2013300 MVA<\/td>\n<td>IEC 60076-1<\/td>\n<\/tr>\n<tr>\n<td>Voltage ratio and vector group<\/td>\n<td>Grid interface<\/td>\n<td>e.g. 33\/11 kV Dyn11<\/td>\n<td>IEC 60076-1<\/td>\n<\/tr>\n<tr>\n<td>No-load and load losses<\/td>\n<td>Energy cost over life<\/td>\n<td>e.g. 10 MVA: ~11 kW NL \/ ~65 kW LL<\/td>\n<td>IEC 60076-1, IEC 60076-19<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u96fb\u5727<\/td>\n<td>Fault level and voltage drop<\/td>\n<td>4\u201312.5%<\/td>\n<td>IEC 60076-5<\/td>\n<\/tr>\n<tr>\n<td>Cooling class<\/td>\n<td>Continuous loading capability<\/td>\n<td>ONAN, ONAF, OFAF<\/td>\n<td>IEC 60076-2<\/td>\n<\/tr>\n<tr>\n<td>Temperature rise limits<\/td>\n<td>Insulation aging<\/td>\n<td>65 K oil \/ 78 K winding (OA)<\/td>\n<td>IEC 60076-2<\/td>\n<\/tr>\n<tr>\n<td>Insulation level (BIL)<\/td>\n<td>Withstand to lightning<\/td>\n<td>e.g. 33 kV: 170\u2013200 kV BIL<\/td>\n<td>IEC 60076-3<\/td>\n<\/tr>\n<tr>\n<td>Tap changer<\/td>\n<td>Voltage regulation<\/td>\n<td>\u00b15%, \u00b110%, DETC or OLTC<\/td>\n<td>IEC 60214<\/td>\n<\/tr>\n<tr>\n<td>\u9a12\u97f3\u30ec\u30d9\u30eb<\/td>\n<td>Environmental compliance<\/td>\n<td>55\u201385 dB(A)<\/td>\n<td>IEC 60076-10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>If two quotations vary due to loss discrepancies, one has to use the capitalized expense method. The no-load loss should be multiplied by a figure between $2,000\u2013$6,000\/kW and the load loss should be multiplied by a figure between $400\u2013$1,200\/kW. This way, the position of a low-cost transformer with high losses in the rating will change as compared to that of a high-cost transformer with low losses.<\/p>\n<h2 id=\"brands-prices\">Brand Comparison and Price Benchmarks<\/h2>\n<p>The global transformer market includes leading global brands and specific producers; a fair comparison requires standardizing rating, losses, testing range, and Incoterms for all brands. The table shows some typical price ranges for a 10 MVA 33\/11 kV oil-filled transformer as well as a 1000 kVA distribution transformer. Price levels depend on the specifications and location.<\/p>\n<table>\n<thead>\n<tr>\n<th>Brand \/ Manufacturer<\/th>\n<th>\u8d77\u6e90<\/th>\n<th>10 MVA 33\/11 kV Price<\/th>\n<th>1,000 kVA Distrib. Price<\/th>\n<th>Typical Lead Time<\/th>\n<th>Strength<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ABB<\/td>\n<td>Switzerland<\/td>\n<td>$180,000\u2013$320,000<\/td>\n<td>$15,000\u2013$28,000<\/td>\n<td>20\u201332 weeks<\/td>\n<td>Global service network, grid references<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30fc\u30e1\u30f3\u30b9\u30a8\u30ca\u30b8\u30fc<\/td>\n<td>\u30c9\u30a4\u30c4<\/td>\n<td>$200,000\u2013$350,000<\/td>\n<td>$16,000\u2013$30,000<\/td>\n<td>22\u201334 weeks<\/td>\n<td>Digital transformer, R&amp;D depth<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<\/td>\n<td>\u30d5\u30e9\u30f3\u30b9<\/td>\n<td>$170,000\u2013$310,000<\/td>\n<td>$14,000\u2013$26,000<\/td>\n<td>20\u201330 weeks<\/td>\n<td>Package solutions, medium voltage<\/td>\n<\/tr>\n<tr>\n<td>\u65e5\u7acb\u30a8\u30ca\u30b8\u30fc<\/td>\n<td>Switzerland\/Japan<\/td>\n<td>$190,000\u2013$340,000<\/td>\n<td>$15,000\u2013$27,000<\/td>\n<td>22\u201336 weeks<\/td>\n<td>HVDC and large power transformer expertise<\/td>\n<\/tr>\n<tr>\n<td>Hyosung, Hyundai, ILJIN (Korea)<\/td>\n<td>South Korea<\/td>\n<td>$150,000\u2013$280,000<\/td>\n<td>$12,000\u2013$22,000<\/td>\n<td>18\u201328 weeks<\/td>\n<td>Consistent quality, strong test labs<\/td>\n<\/tr>\n<tr>\n<td>Major Chinese OEMs (TBEA, Baoding Tianwei, etc.)<\/td>\n<td>\u4e2d\u56fd<\/td>\n<td>$90,000\u2013$180,000<\/td>\n<td>$7,000\u2013$14,000<\/td>\n<td>12\u201320 weeks<\/td>\n<td>Capacity, cost, IEC certified exports<\/td>\n<\/tr>\n<tr>\n<td>Mid-tier Chinese exporters (e.g. Jiangsu Subian Electric Power)<\/td>\n<td>\u4e2d\u56fd<\/td>\n<td>$80,000\u2013$150,000<\/td>\n<td>$6,000\u2013$12,000<\/td>\n<td>10\u201318 weeks<\/td>\n<td>Custom engineering, fast response, FAT support<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Renowned global brands gain their price advantage due to years of successful projects and extensive network of servicing. Most mid-tier companies compete through engineering capabilities, reduced delivery times, and pricing while providing products according to IEC 60076 standard. Jiangsu Subian Electric Power is one of the Chinese companies manufacturing IEC 60076-compliant transformers up to 110 kV, offering FAT with clients\u2019 engineers, and exporting to Southeast Asia, Middle East, Africa, and Latin America. For EPCs who need to optimize their schedules, budgets, and compliance systems, Subian can provide audited IEC-certified production without waiting in a 20-32 week queue typical for famous brands.<\/p>\n<h2 id=\"hidden-costs\">Pricing Structure and Hidden-Cost Questions<\/h2>\n<p>When the price comparisons arise from different considerations, the valid comparison becomes invalid. One should ask the following questions before making the comparison:<\/p>\n<ul>\n<li>Is the tap changer, bushings, conservator, oil, and accessories included in the price? Differences of 5-15% in the accessories scope is the major reason behind the pricing differences of the quotes.<\/li>\n<li>Are type tests included or charged separately? The witnessing fee may involve $8,000-$30,000.<\/li>\n<li>What does the price include regarding packing and export crating? Tropical packing costs between 1-3% of the price.<\/li>\n<li>Is the price inclusive of installation supervision? Generally accepted price ranges between $150-$450 per engineer-day plus additional travel costs.<\/li>\n<li>What are the payment terms? The common structure is 30\/30\/30\/10 or 30\/40\/20\/10 and it is better not to pay more than 30-40% before FAT.<\/li>\n<\/ul>\n<p>To be sure that the comparison is valid, make sure that the prices are broken down by items and that the scope is the same; if the price is 25% less than the market price, something is missed.<\/p>\n<p>Summarize key points concerning the commercial terms before the signing takes place.<\/p>\n<table>\n<thead>\n<tr>\n<th>Term<\/th>\n<th>Common Practice<\/th>\n<th>EPC Protection<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Payment milestones<\/td>\n<td>30\/30\/30\/10<\/td>\n<td>Max 30\u201340% before FAT<\/td>\n<\/tr>\n<tr>\n<td>\u4fdd\u8a3c<\/td>\n<td>12\u201324 months<\/td>\n<td>Negotiate 24\u201360 months<\/td>\n<\/tr>\n<tr>\n<td>FAT witness<\/td>\n<td>First unit only<\/td>\n<td>100% for multi-unit orders<\/td>\n<\/tr>\n<tr>\n<td>Incoterms<\/td>\n<td>FOB or CIF<\/td>\n<td>Define freight risk clearly<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"aftersales\">After-Sales, Warranty, and Spare Parts Questions<\/h2>\n<p>A transformer has a long lifespan estimated to be around twenty to thirty years after purchase. Ask the vendor the following questions:<\/p>\n<ul>\n<li>What is your warranty, and what is excluded by it? Generally, it is given for a year or two after commissioning, and can be up to five years for core insulation defects.<\/li>\n<li>What is your procedure for warranty claims for transformers used overseas? Indicate the location of the repair, who is paying for delivery, and if compensation for downtime arises.<\/li>\n<li>Do you have service parts in stock (bushings, seals, OLTC elements, etc.)? Delivery of bushings can take 8 \u201316 weeks after the failure.<\/li>\n<li>Can you offer remote service for DGA and OLTC alarms? Negotiating for 24\/7 customer support is a sound investment.<\/li>\n<li>Do you provide maintenance contracts and\/or engineer training?<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10767\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-to-Score-and-Shortlist-Suppliers.webp\" alt=\"How to Score and Shortlist Suppliers\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"scoring\">How to Score and Shortlist Suppliers<\/h2>\n<p>Create a weighted scoring matrix based on the prior questions, enabling the decision to withstand internal scrutiny.Weighting that has been successful in the past is as follows:<\/p>\n<ul>\n<li>Technical compliance and testing capability \u2013 30 %: Compliance with standards, depth of test report, FAT policy<\/li>\n<li>Delivery reliability and capacity \u2013 20 %: Lead time, back orders, reference record<\/li>\n<li>Total cost of ownership \u2013 20 %: Price, share of losses incurred, transport, commissioning<\/li>\n<li>Quality system and audit outcomes \u2013 15 %: ISO 9001, factory audit, defects background<\/li>\n<li>After-sales service \u2013 10 %: Warranty, spare parts, response time<\/li>\n<li>Documentation and communication \u2013 5 %: Completion of drawings, command of technical terms in English<\/li>\n<\/ul>\n<p>Identify three potential suppliers and request bids for the same package from each of them, attend one FAT if the project value allows, and communicate with two reference customers who received shipments during the last 18 months. It will take some time but save EPCs months of delays and disputes worth six figures.<\/p>\n<h2 id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>What is a realistic transformer lead time for an EPC project?<\/h3>\n<p>For regular transformers (about 2,500 kVA), the estimated delivery period is around 6 to 12 weeks for basic designs and 8 to 16 weeks for those accessories. For transformers of moderate size (5-40 MVA), the lead time is between 12 and 20 weeks whereas much larger transformers (60 MVA+) are sent in the span of 24 to 40 weeks. It is wise to include 2 to 6 weeks of delivery time in the final estimate as well.<\/p>\n<h3>Which standards should an EPC specify for transformer procurement?<\/h3>\n<p>Whenever ordering equipment, IEC 60076-1 through IEC 60076-19 should be specified every country over. In America, IEEE C57.12.90 and IEEE C57.12.00 standards are sufficient. You must evaluate the price quote in advance to be on the safer side.<\/p>\n<h3>How much should an EPC budget for a 10 MVA power transformer?<\/h3>\n<p>Expected costs for an average 10 mVA transformer are between $80,000- and $250,000 depending on brand as well as level of loss per unit. Spending 5 to 12 percent of the budget on customs is quite rational in this case, too. Make sure to get the most competitive prices available.<\/p>\n<h3>Is it worth paying more for a transformer with lower losses?<\/h3>\n<p>In most cases the answer would be yes. If the rate of losses in transformers is in the range of $2,000- to $6,000 per kW depending on the version of the transformer, the extra investment made might be covered fully in future savings.<\/p>\n<h3>Should EPCs witness factory acceptance tests for every transformer unit?<\/h3>\n<p>For mass production it would be wise to oversee the entire factory acceptance testing procedure with each unit sent.<\/p>\n<h2 id=\"references\">\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/628\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-1: Power Transformers \u2014 General<\/a> \u2014 The primary international standard defining rating, voltage, and loss requirements for power transformers.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/631\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-5: Power Transformers \u2014 Ability to Withstand Short Circuit<\/a> \u2014 Specifies short-circuit withstand design verification and test procedures.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/629\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-11: Power Transformers \u2014 Dry-type Transformers<\/a> \u2014 The key standard for dry-type and cast-resin transformer procurement.<\/li>\n<li><a href=\"https:\/\/www.ieee.org\/content\/dam\/ieee-org\/ieee\/web\/org\/pes\/psim\/IEEE-C57.12.00-2021.pdf\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.12.00: Standard for Liquid-Immersed Distribution, Power, and Regulating Transformers<\/a> \u2014 North American counterpart used for USA and Canadian projects.<\/li>\n<li><a href=\"https:\/\/www.iso.org\/standard\/62085.html\" rel=\"nofollow noopener\" target=\"_blank\">ISO 9001:2015 Quality Management Systems<\/a> \u2014 The baseline certification expected of any transformer manufacturing plant.<\/li>\n<li><a href=\"https:\/\/www.cigre.org\/\" rel=\"nofollow noopener\" target=\"_blank\">CIGR\u00c9<\/a> \u2014 International council publishing authoritative transformer reliability and maintenance research (A2 technical brochures).<\/li>\n<li><a href=\"https:\/\/subian-electric.com\/ja\/\">\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/a> \u2014 IEC 60076-compliant transformer manufacturer serving EPC and distribution projects worldwide.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p>The choice of transformer vendor constitutes one of the most crucial steps in any EPC project. The inquiries mentioned previously embrace five main aspects that are vital for successful project delivery i.e. capacity and lead-time, testing and certification, engineering support, actual cost, and after-sales service. Make use of the questions laid above to devise a scoring matrix; compare the quotations against the price tables, and confirm the not-too-ambitious promises through factory inspections, examples of test reports, and reference phone calls.<\/p>\n<ul>\n<li>Make sure that compliance with the IEC 60076 or IEEE C57.12 is proved by type test reports.<\/li>\n<li>Check lead times ranging from 6-16 weeks (in case of distribution transformers) to 24-40 weeks (for big capacity electric machines) adding 15-20% of contingency.<\/li>\n<li>Adjust the prices based on the scope of supply and losses capitalization prior to price comparison.<\/li>\n<li>Make sure to be present at factory acceptance tests (FAT) to demand the relevant test report with each shipment.<\/li>\n<li>Plan for 12-60 warranty period and spare part availability in contracts and negotiations.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>An EPC company has clinched a contract for solar-plus-storage of 230 MW in the Philippines. The clients are demanding that transformers be delivered at the site in 26 weeks. The procurement manager has three shortlisted suppliers, two quotations whose prices vary by almost 40 percent, and a project timetable that cannot be breached. If you have been in this position before, you know that choosing the transformer supplier will determine whether your substation can be powered on time or the client will invoke the fines as per the liquidated damages clause This guide discusses various aspects the EPCs must inquire and consider while selecting a transformer supplier, enabling them to [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10765,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-10764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/comments?post=10764"}],"version-history":[{"count":2,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10764\/revisions"}],"predecessor-version":[{"id":10986,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10764\/revisions\/10986"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/10765"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=10764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=10764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=10764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}