{"id":10898,"date":"2026-08-29T23:43:09","date_gmt":"2026-08-29T15:43:09","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=10898"},"modified":"2026-08-29T23:43:09","modified_gmt":"2026-08-29T15:43:09","slug":"scientific-methods-for-selecting-transformers-based-on-the-power-of-electrical-equipment","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/news\/scientific-methods-for-selecting-transformers-based-on-the-power-of-electrical-equipment\/","title":{"rendered":"\u96fb\u6c17\u6a5f\u5668\u306e\u96fb\u529b\u306b\u57fa\u3065\u304f\u30c8\u30e9\u30f3\u30b9\u306e\u9078\u5b9a\u306b\u95a2\u3059\u308b\u79d1\u5b66\u7684\u624b\u6cd5"},"content":{"rendered":"<p>\u30d9\u30c8\u30ca\u30e0\u306e\u7e4a\u7dad\u5de5\u5834\u306f\u3001\u540415 kW\u306e12\u53f0\u306e\u7e54\u6a5f\u3092\u7a3c\u50cd\u3055\u305b\u308b\u6e96\u5099\u3092\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u30aa\u30fc\u30ca\u30fc\u306e\u7d50\u8ad6\u306f\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u3057\u305f\uff1a12\u53f0\u306e\u6a5f\u68b0\u306b15 kW\u3092\u639b\u3051\u308b\u3068180 kW\u306b\u306a\u308a\u3001\u3057\u305f\u304c\u3063\u3066200 kVA\u306e\u5909\u5727\u5668\u304c\u5fc5\u8981\u3067\u3059\u3002\u305d\u306e\u6642\u70b9\u3067\u3001\u96fb\u6c17\u5de5\u4e8b\u696d\u8005\u306f\u6ce8\u6587\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u307e\u3057\u305f\u3002\u5b9f\u969b\u306b\u306f\u3001\u5404\u6a5f\u68b0\u306f\u7d0418 kVA\u3092\u6d88\u8cbb\u3057\u3001\u529b\u7387\u306f0.83\u3067\u3059\uff1b\u305d\u306e\u7a81\u5165\u96fb\u6d41\u306f\u904b\u8ee2\u4e2d\u306e\u96fb\u6d41\u306e\u6700\u59276\u500d\u306b\u9054\u3057\u307e\u3059\uff1b\u3053\u308c\u3089\u306e\u6a5f\u68b0\u306b\u7d66\u96fb\u3059\u308b\u30a8\u30a2\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u306f60 kVA\u3092\u8ffd\u52a0\u3057\u307e\u3059\uff1b\u3055\u3089\u306b\u3001\u5de5\u5834\u306b\u306f\u3059\u3067\u306b2\u3064\u306e\u30e9\u30a4\u30f3\u304c\u8ffd\u52a0\u3055\u308c\u308b\u4e88\u5b9a\u3067\u3059\u3002\u79d1\u5b66\u7684\u306b\u6b63\u5f53\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u8a08\u7b97\u306e\u7d50\u679c\u3001500 kVA\u306e\u5909\u5727\u5668\u304c\u5fc5\u8981\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u5358\u7d14\u306a\u8a08\u7b97\u65b9\u6cd5\u3067\u5f97\u3089\u308c\u305f\u5024\u306e2\u500d\u4ee5\u4e0a\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5909\u5727\u5668\u306e\u9078\u5b9a\u306f\u6a5f\u5668\u306e\u96fb\u529b\u306b\u57fa\u3065\u3044\u3066\u884c\u3046\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u96fb\u6c17\u6a5f\u5668\u306e\u96fb\u529b\u8981\u4ef6\u306b\u57fa\u3065\u3044\u305f\u79d1\u5b66\u7684\u306b\u6b63\u3057\u3044\u5909\u5727\u5668\u306e\u9078\u5b9a\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10899\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Scientific-Transformer-Selection-Based-on-equipment-power.webp\" alt=\"\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u30b5\u30a4\u30ba\u6c7a\u5b9a\u65b9\u6cd5\u3068\u3057\u3066\u306ekW\u52a0\u7b97\u306e\u5931\u6557\u306e\u7406\u7531<\/h2>\n<p>\u5404\u6a5f\u5668\u306e\u540d\u76eekW\u306e\u5408\u8a08\u3092\u4f7f\u7528\u3057\u3066\u3001\u305d\u306ekVA\u5b9a\u683c\u3092\u63d0\u4f9b\u3059\u308b\u5909\u5727\u5668\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306f\u3001\u696d\u754c\u3067\u5b58\u5728\u3059\u308b\u6700\u3082\u4e00\u822c\u7684\u306a\u30b5\u30a4\u30ba\u6c7a\u5b9a\u306e\u8aa4\u308a\u3067\u3059\u3002\u4ee5\u4e0b\u306f\u305d\u306e\u5931\u6557\u306e\u79d1\u5b66\u7684\u7406\u7531\u3067\u3059\uff1a<\/p>\n<p>\u529b\u7387\u304c\u7121\u8996\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u96fb\u529b\u306f\u3001\u30e2\u30fc\u30bf\u30fc\u3001\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u3001\u307e\u305f\u306f\u30e9\u30f3\u30d7\u306e\u898b\u304b\u3051\u306e\u96fb\u529b\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u4f4e\u3044\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u5b9f\u969b\u306e\u96fb\u529b\u304c180 kW\u306e\u30e2\u30fc\u30bf\u30fc\u306f\u3001\u529b\u73870.85\u306e\u5834\u5408\u3001212 kVA\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u306f200 kVA\u306e\u5909\u5727\u5668\u3092\u904e\u8ca0\u8377\u306b\u3059\u308b18\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u5dee\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<br \/>\n\u591a\u69d8\u6027\u304c\u7121\u8996\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u3001\u6a5f\u68b0\u304c\u540c\u6642\u306b\u6700\u5927\u80fd\u529b\u3067\u7a3c\u50cd\u3059\u308b\u3053\u3068\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\u6a5f\u68b0\u306e\u5b9a\u683c\u96fb\u529b\u3092\u52a0\u7b97\u3059\u308b\u3068\u300120-40\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u3001\u5fc5\u8981\u306a\u5024\u3092\u8d85\u3048\u305f\u5909\u5727\u5668\u306b\u7121\u99c4\u306a\u304a\u91d1\u3092\u4f7f\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002.<br \/>\n\u59cb\u52d5\u96fb\u6d41\u304c\u7121\u8996\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5927\u304d\u306a\u96fb\u52d5\u6a5f\u306f\u3001\u59cb\u52d5\u6642\u306b\u901a\u5e38\u306e\u96fb\u6d41\u306e\u6700\u59276\u500d\u3092\u6d88\u8cbb\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u96fb\u5727\u304c\u5d29\u58ca\u3057\u3001\u30ea\u30ec\u30fc\u304c\u30aa\u30d5\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<p>\u5b66\u8853\u7684\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u3059\u3079\u3066\u306e\u5f71\u97ff\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u76f4\u611f\u3067\u306f\u306a\u304f\u7269\u7406\u5b66\u306b\u3088\u3063\u3066\u6c7a\u5b9a\u3055\u308c\u305f\u6700\u7d42\u7684\u306a\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u3092\u5f97\u308b\u65b9\u6cd5\u3067\u3059\u3002.<\/p>\n<h2 id=\"power-conversion\">\u6a5f\u5668\u306ekW\u304b\u3089\u5909\u5727\u5668\u306ekVA\u3078<\/h2>\n<p>\u57fa\u672c\u7684\u306a\u65b9\u7a0b\u5f0f\u306fkVA = kW \u00f7 \u529b\u7387\u3067\u3059\u3002\u4e09\u76f8\u88c5\u7f6e\u3084\u6a5f\u5668\u304c\u95a2\u4e0e\u3059\u308b\u5834\u5408\u3001kVA\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306bkVA = (\u221a3 \u00d7 V \u00d7 I) \u00f7 1000\u306e\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u6a5f\u68b0\u306e\u540d\u677f\u306b\u306f\u3001\u5fc5\u8981\u306a\u3059\u3079\u3066\u306e\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\uff1a\u5b9a\u683ckW\u3001\u96fb\u5727\u3001\u5b9a\u683c\u96fb\u6d41\u3001\u305d\u3057\u3066\u6642\u306b\u306f\u52b9\u7387\u5024\u3082\u3042\u308a\u307e\u3059\u3002\u5e38\u306b\u5909\u5727\u5668\u30d0\u30b9\u304b\u3089\u306ekVA\u3092\u4f7f\u7528\u3057\u3001\u30e2\u30fc\u30bf\u30fc\u7aef\u5b50\u306ekVA\u3067\u306f\u306a\u304f\u3001\u30d5\u30a3\u30fc\u30c0\u30fc\u5168\u4f53\u306e\u640d\u5931\uff08\u9577\u8ddd\u96e2\u3067\u306e2-5%\u640d\u5931\uff09\u3092\u8003\u616e\u306b\u5165\u308c\u308b\u3079\u304d\u3067\u3059\u3002.<\/p>\n<p>\u30e2\u30fc\u30bf\u30fc\u306e\u99ac\u529b\u306e\u307f\u304c\u77e5\u3089\u308c\u3066\u3044\u308b\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u5834\u5408\u30011 hp \u2248 0.746 kW \u306e\u5909\u63db\u3092\u4f7f\u7528\u3057\u3066\u8a08\u7b97\u3057\u3001\u30e2\u30fc\u30bf\u30fc\u52b9\u7387\u5024\uff08\u901a\u5e38\u306f 0.90 \u3068 0.95 \u306e\u9593\uff09\u3067\u5272\u308b\u3079\u304d\u3067\u3059\u3002\u3053\u306e\u5834\u5408\u3001100 hp \u30e2\u30fc\u30bf\u30fc\u306f 100 \u00d7 0.746 \u00f7 0.93 \u00f7 0.85 \u306e\u7d50\u679c\u3068\u3057\u3066\u3001\u904b\u8ee2\u4e2d\u306f\u7d04 94 kVA \u3092\u6d88\u8cbb\u3057\u3001\u8d77\u52d5\u6642\u306b\u306f 5 \u500d\u304b\u3089 8 \u500d\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6a5f\u5668\u306e\u7a2e\u985e<\/th>\n<th>\u5178\u578b\u7684\u306a\u529b\u7387<\/th>\n<th>\u5178\u578b\u7684\u306a\u591a\u69d8\u6027<\/th>\n<th>\u540d\u76ee\u4e0a\u306e 100 kW \u3042\u305f\u308a\u306e kVA<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8a98\u5c0e\u30e2\u30fc\u30bf\u30fc\uff08\u4e00\u822c\uff09<\/td>\n<td>0.80\u20130.88<\/td>\n<td>0.70\u20130.85<\/td>\n<td>114\u2013125<\/td>\n<\/tr>\n<tr>\n<td>VFD \u99c6\u52d5\u30e2\u30fc\u30bf\u30fc<\/td>\n<td>95\uff08\u5165\u529b\uff09<\/td>\n<td>0.70\u20130.80<\/td>\n<td>105<\/td>\n<\/tr>\n<tr>\n<td>\u62b5\u6297\u52a0\u71b1 \/ \u30aa\u30fc\u30d6\u30f3<\/td>\n<td>1.00<\/td>\n<td>0.60\u20130.80<\/td>\n<td>100<\/td>\n<\/tr>\n<tr>\n<td>LED \u7167\u660e<\/td>\n<td>0.95\u20130.99<\/td>\n<td>0.80\u20130.90<\/td>\n<td>101\u2013105<\/td>\n<\/tr>\n<tr>\n<td>\u6eb6\u63a5\u6a5f<\/td>\n<td>0.45\u20130.70<\/td>\n<td>0.30\u20130.50<\/td>\n<td>143\u2013222<\/td>\n<\/tr>\n<tr>\n<td>\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\uff08\u30b9\u30af\u30ea\u30e5\u30fc\uff09<\/td>\n<td>0.82\u20130.90<\/td>\n<td>0.60\u20130.80<\/td>\n<td>111\u2013122<\/td>\n<\/tr>\n<tr>\n<td>HVAC \u30c1\u30e9\u30fc<\/td>\n<td>0.80\u20130.88<\/td>\n<td>0.70\u20130.90<\/td>\n<td>114\u2013125<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6eb6\u63a5\u884c\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\u4f4e\u529b\u7387\u3068\u975e\u5e38\u306b\u4f4e\u3044\u591a\u69d8\u6027\u306f\u3001\u5b9f\u969b\u306e\u540c\u6642\u8ca0\u8377\u304c\u5c0f\u3055\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30c8\u30e9\u30f3\u30b9\u304c\u9ad8\u3044 kVA-per-kW \u6bd4\u3067\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u4e00\u822c\u7684\u306a\u30eb\u30fc\u30eb\u304c\u5931\u6557\u3059\u308b\u7406\u7531\u3067\u3059 \u2014 \u79d1\u5b66\u7684\u65b9\u6cd5\u306f\u5e38\u306b\u6a5f\u5668\u306e\u5b9f\u969b\u306e\u96fb\u6c17\u7279\u6027\u304b\u3089\u4f5c\u696d\u3057\u307e\u3059\u3002.<\/p>\n<h2 id=\"demand-factors\">\u9700\u8981\u3001\u591a\u69d8\u6027\u3001\u304a\u3088\u3073\u4e00\u81f4\u4fc2\u6570<\/h2>\n<p>\u9700\u8981\u3001\u591a\u69d8\u6027\u3001\u304a\u3088\u3073\u4e00\u81f4\u306e\u4fc2\u6570\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u30d0\u30b9\u3067\u306e\u8ca0\u8377\u306e\u52d5\u4f5c\u306b\u95a2\u3059\u308b\u540c\u3058\u95a2\u4fc2\u3092\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<p>\u9700\u8981\u4fc2\u6570\u306f\u3001\u6700\u5927\u9700\u8981\u3092\u30b0\u30eb\u30fc\u30d7\u306e\u63a5\u7d9a\u8ca0\u8377\u3067\u5272\u3063\u305f\u3082\u306e\u3067\u3001\u901a\u5e38\u306f 1 \u672a\u6e80\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u8ca0\u8377\u306f\u30d5\u30eb\u30ad\u30e3\u30d1\u30b7\u30c6\u30a3\u4ee5\u4e0b\u3067\u52d5\u4f5c\u3059\u308b\u50be\u5411\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002.<\/p>\n<p>\u591a\u69d8\u6027\u4fc2\u6570\u306f\u3001\u7dcf\u6700\u5927\u9700\u8981\u3092\u6700\u5927\u4e00\u81f4\u9700\u8981\u3067\u5272\u3063\u305f\u3082\u306e\u3067\u3001\u4e00\u822c\u7684\u306b 1 \u3088\u308a\u5927\u304d\u3044\u3067\u3059\u3002.<\/p>\n<p>\u4e00\u81f4\u4fc2\u6570\u306f\u3001\u591a\u69d8\u6027\u4fc2\u6570\u306b\u4f3c\u3066\u304a\u308a\u3001\u540c\u6642\u306b\u52d5\u4f5c\u3057\u3066\u3044\u308b\u5b9f\u969b\u306e\u8ca0\u8377\u91cf\u3092\u652f\u914d\u3057\u3001\u901a\u5e38\u306f 0.5 \u3068 0.9 \u306e\u9593\u3067\u3059\u3002.<\/p>\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u901a\u5e38\u3001\u3053\u308c\u3089\u306e\u4fc2\u6570\u306e\u3044\u305a\u308c\u304b\u3092 kVA \u306e\u91cf\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u640d\u5931\u306e\u7bc0\u7d04\u3068\u30c8\u30e9\u30f3\u30b9\u8cfc\u5165\u306e\u89b3\u70b9\u304b\u3089\u8a2d\u8a08\u9700\u8981\u306e\u7dcf\u91cf\u3092\u898b\u3064\u3051\u308b\u660e\u78ba\u306a\u4f8b\u3092\u5c0e\u304d\u51fa\u3057\u307e\u3059\u3002.<br \/>\n\u4f8b\u3048\u3070\u3001500 kVA \u306e\u63a5\u7d9a\u8ca0\u8377\u306e\u5834\u5408\u3001\u9700\u8981\u4fc2\u6570\u306e\u5024\u306f 0.9 \u3067\u3001\u4e00\u81f4\u4fc2\u6570\u306e\u5024\u306f 0.8 \u306a\u306e\u3067\u3001\u8a2d\u8a08\u9700\u8981\u306f 500 x 0.9 x 0.8 = 360 kVA \u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2 id=\"starting-current\">\u30e2\u30fc\u30bf\u30fc\u8d77\u52d5\u554f\u984c<\/h2>\n<p>\u8d77\u52d5\u96fb\u6d41\u306f\u3001\u5c0f\u578b\u30c8\u30e9\u30f3\u30b9\u306b\u95a2\u3057\u3066\u306f\u9759\u304b\u306a\u6697\u6bba\u8005\u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002150 kW \u30e2\u30fc\u30bf\u30fc\u306e\u5834\u5408\u3001\u76f4\u63a5\u63a5\u7d9a\u8d77\u52d5\u306b\u306f\u3001\u30d5\u30eb\u30ed\u30fc\u30c9\u96fb\u6d41\u306e 5 \u500d\u304b\u3089 7 \u500d\u306e\u8d77\u52d5\u96fb\u6d41\u304c\u5fc5\u8981\u3067\u3001\u3053\u308c\u304c 3 \u79d2\u304b\u3089 10 \u79d2\u7d9a\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u304c\u8d77\u52d5 kVA \u3068\u305d\u306e\u6b8b\u308a\u306e\u96fb\u6d41\u8ca0\u8377\u3092\u63d0\u4f9b\u3057\u306a\u304c\u3089\u3001\u30e2\u30fc\u30bf\u30fc\u7aef\u5b50\u3067\u306e\u96fb\u5727\u964d\u4e0b\u3092\u7d04 10 \u304b\u3089 15% \u306b\u5236\u9650\u3057\u3088\u3046\u3068\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u3053\u3053\u3067\u8b70\u8ad6\u3055\u308c\u3066\u3044\u308b 3 \u3064\u306e\u89e3\u6c7a\u7b56\u306e\u3046\u3061\u306e 1 \u3064\u304c\u3001\u30b5\u30a4\u30ba\u8a2d\u5b9a\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30bd\u30d5\u30c8\u30b9\u30bf\u30fc\u30bf\u30fc\u306f\u3001\u8d77\u52d5\u96fb\u6d41\u3092\u30d5\u30eb\u30ed\u30fc\u30c9\u96fb\u6d41\u306e 2 \u500d\u304b\u3089 3 \u500d\u306b\u6e1b\u5c11\u3055\u305b\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002VFD \u306f\u3001\u8d77\u52d5\u96fb\u6d41\u3092\u7d04 1.2 \u500d\u304b\u3089 1.5 \u500d\u306b\u6e1b\u5c11\u3055\u305b\u307e\u3059\u3002\u30b9\u30bf\u30fc\u30fb\u30c7\u30eb\u30bf\u8d77\u52d5\u306f\u3001\u76f4\u63a5\u63a5\u7d9a\u8d77\u52d5\u306e 33% \u306b\u524a\u6e1b\u3057\u307e\u3059\u304c\u3001\u3053\u306e\u65b9\u6cd5\u306f\u30c8\u30eb\u30af\u304c\u6e1b\u5c11\u3057\u307e\u3059\u3002\u8d77\u52d5\u96fb\u6d41\u3092\u5236\u5fa1\u3067\u304d\u308b\u5834\u5408\u3001\u6a19\u6e96\u306e\u8a55\u4fa1\u3092 1 \u3064\u4e0b\u3052\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u5236\u5fa1\u304c\u4e0d\u53ef\u80fd\u3067\u3001\u65bd\u8a2d\u306b\u5927\u304d\u306a\u56fa\u5b9a\u901f\u5ea6\u30e2\u30fc\u30bf\u30fc\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30a4\u30ba\u306f\u904b\u8ee2\u8ca0\u8377\u3067\u306f\u306a\u304f\u8d77\u52d5\u96fb\u6d41\u306b\u57fa\u3065\u304f\u3079\u304d\u3067\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u59cb\u52d5\u65b9\u6cd5<\/th>\n<th>\u5178\u578b\u59cb\u52d5\u96fb\u6d41\uff08%\u306eFLC\uff09<\/th>\n<th>\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30a4\u30ba\u306b\u5bfe\u3059\u308b\u5f71\u97ff<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u76f4\u63a5\u63a5\u7d9a\uff08DOL\uff09<\/td>\n<td>500\u2013700%<\/td>\n<td>\u91cd\u8981 \u2014 1\u30e9\u30f3\u30af\u4e0a\u306e\u8a55\u4fa1\u3092\u8ffd\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30bf\u30fc\u30c7\u30eb\u30bf<\/td>\n<td>~170\u2013230%<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>\u30bd\u30d5\u30c8\u30b9\u30bf\u30fc\u30bf<\/td>\n<td>200\u2013300%<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<\/tr>\n<tr>\n<td>VFD<\/td>\n<td>120\u2013150%<\/td>\n<td>\u6700\u5c0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u306e\u7d4c\u9a13\u5247\uff1a\u6700\u5927\u30e2\u30fc\u30bf\u30fc\u304c\u30c8\u30e9\u30f3\u30b9\u306e\u5b9a\u683c\u306e25%\u3092\u8d85\u3048\u308b\u5834\u5408\u3001\u96fb\u5727\u964d\u4e0b\u8a08\u7b97\u3092\u7528\u3044\u3066\u59cb\u52d5\u30b7\u30ca\u30ea\u30aa\u3092\u660e\u793a\u7684\u306b\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u300250%\u3092\u8d85\u3048\u308b\u5834\u5408\u306f\u3001\u5b9a\u683c\u3092\u4e0a\u3052\u308b\u304b\u3001\u59cb\u52d5\u65b9\u6cd5\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u304f\u3060\u3055\u3044 \u2014 \u7b97\u8853\u306fIEC 60076-7\u304a\u3088\u3073IEEE C57.12.00\u306e\u30b5\u30a4\u30af\u30ea\u30c3\u30af\u304a\u3088\u3073\u77ed\u6642\u9593\u8ca0\u8377\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c0\u30f3\u30b9\u306b\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10901\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-to-size-a-transformer-scientifically.webp\" alt=\"\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"worked-examples\">\u696d\u754c\u5225\u306e\u5b9f\u4f8b<\/h2>\n<p>\u4f8bA \u2013 \u7e4a\u7dad\u5de5\u5834\u3002\u63a5\u7d9a\u8ca0\u8377 = 12\u53f0\u306e\u7e54\u6a5f\uff08\u540415 kW\uff08PF = 0.83\uff09\uff09 + 3\u53f0\u306e\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\uff08\u540430 kW\uff08PF = 0.85\uff09\uff09 + 40 kW\u306e\u7167\u660e\uff08PF = 0.95\uff09 + 20 kW\u306eHVAC\u3002\u904b\u8ee2kVA = 12 * 18.1 + 3 * 35.3 + 42 + 21 = ~ 345 kVA\u3002\u9700\u8981\u4fc2\u6570 = 0.9\u304a\u3088\u3073\u4e00\u81f4\uff08CF\uff09 = 0.8 -&gt; 345 * 0.9 * 0.8 = 248 kVA\u300215%\u306e\u6210\u9577\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u5fc5\u8981\u306a\u96fb\u529b\u5b9a\u683c = 285 kVA\u307e\u305f\u306f\u6a19\u6e96\u5b9a\u683c\u306e315 kVA\u3002\u6700\u5927\u5358\u4e00\u8ca0\u8377\u306f35 kVA\uff08\u5b9a\u683c\u306e\u7d0411%\uff09\u3067\u3042\u308b\u305f\u3081\u3001\u5236\u9650\u306a\u3057\u3067\u59cb\u52d5\u53ef\u80fd\u3002.<\/p>\n<p>\u4f8bB \u2013 \u98df\u54c1\u52a0\u5de5\u5de5\u5834\u3002\u51b7\u5374\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\uff08100 kW\uff09\uff086\u00d7\u59cb\u52d5\/PF = 0.85\uff09\u3001\u6a5f\u68b0\uff0860 kW\uff09\u3001CIP\u30dd\u30f3\u30d7\uff0830 kW\uff09\u304a\u3088\u3073\u7167\u660e\uff0825 kW\uff09\u3002\u904b\u8ee2kVA = 118 + 71 + 35 + 26 = 250 kVA\u304a\u3088\u3073\u4e00\u81f4\u4fc2\u6570\uff08CF\uff09 = 0.75 -&gt; \u5fc5\u8981\u306a\u96fb\u529b = 188 kVA\u3002\u59cb\u52d5\u6642\u3001\u51b7\u5374\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u306f\u4e00\u6642\u7684\u306b\u7d046 x 118 = 708 kVA\u306e\u96fb\u529b\u9700\u8981\u304c\u3042\u308a\u307e\u3059\uff085\u79d2\u9593\uff09\u3002\u8a2d\u8a08\u6761\u4ef6\uff1a188 + (708 \u2013 118) = ~ 778 kVA\u4e00\u6642\u7684\u306b\u3002315 kVA\u30e6\u30cb\u30c3\u30c8\u306f\u305d\u308c\u306b\u8010\u3048\u3089\u308c\u306a\u3044\u305f\u3081\u3001\u5b9f\u7528\u7684\u306a\u89e3\u6c7a\u7b56\u306f630 kVA\u30e6\u30cb\u30c3\u30c8\u304a\u3088\u3073\/\u307e\u305f\u306f\u30bd\u30d5\u30c8\u30b9\u30bf\u30fc\u30c8\u3067\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30b7\u30ca\u30ea\u30aa<\/th>\n<th>\u5358\u7d14\u306akW\u5408\u8a08<\/th>\n<th>\u79d1\u5b66\u7684kVA\u7d50\u679c<\/th>\n<th>\u5dee\u7570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7e4a\u7dad\u5de5\u5834 (\u4f8bA)<\/td>\n<td>270 kVA<\/td>\n<td>315 kVA<\/td>\n<td>+17%<\/td>\n<\/tr>\n<tr>\n<td>\u98df\u54c1\u5de5\u5834 (\u4f8bB)<\/td>\n<td>250 kVA<\/td>\n<td>630 kVA<\/td>\n<td>+152%<\/td>\n<\/tr>\n<tr>\n<td>\u5009\u5eab\u7167\u660e + HVAC<\/td>\n<td>150 kVA<\/td>\n<td>160 kVA<\/td>\n<td>+7%<\/td>\n<\/tr>\n<tr>\n<td>50 kW\u306e\u65cb\u76e4\u3092\u6301\u3064\u6a5f\u68b0\u5de5\u5834<\/td>\n<td>300 kVA<\/td>\n<td>400 kVA<\/td>\n<td>+33%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u30d1\u30bf\u30fc\u30f3\u306f\u660e\u78ba\u3067\u3059\uff1a\u30e2\u30fc\u30bf\u30fc\u304c\u591a\u304f\u3001\u6700\u5927\u306e\u30e2\u30fc\u30bf\u30fc\u304c\u5927\u304d\u3044\u307b\u3069\u3001\u7d20\u6734\u306a\u30b5\u30a4\u30ba\u8a08\u7b97\u3068\u79d1\u5b66\u7684\u30b5\u30a4\u30ba\u8a08\u7b97\u306e\u9593\u306e\u30ae\u30e3\u30c3\u30d7\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u79d1\u5b66\u7684\u65b9\u6cd5\u306f\u3001\u3059\u3079\u3066\u306e\u6570\u5024\u3092\u81a8\u3089\u307e\u305b\u308b\u3053\u3068\u3067\u306f\u306a\u304f\u3001\u771f\u306e\u5236\u7d04\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u3067\u3059\u3002\u305d\u308c\u306f\u6642\u306b\u306f\u5bb9\u91cf\u3067\u3042\u308a\u3001\u6642\u306b\u306f\u59cb\u52d5\u96fb\u6d41\u3067\u3059\u3002.<\/p>\n<h2 id=\"standard-ratings\">\u6a19\u6e96\u5b9a\u683c\u3068\u30b5\u30a4\u30ba\u8868<\/h2>\n<p>\u8a2d\u8a08\u9700\u8981\u3092\u8a08\u7b97\u3057\u305f\u5f8c\u3001\u6b21\u306e\u6a19\u6e96IEC 60076-1\u5b9a\u683c\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u6a19\u6e96kVA\u5024\u306b\u306f\u300125\u300150\u3001100\u3001160\u3001250\u3001315\u3001400\u3001500\u3001630\u3001800\u30011000\u30011250\u30011600\u30012000\u30012500\u3001\u304a\u3088\u30733150\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u30ab\u30b9\u30bf\u30e0\u5b9a\u683c\u3082\u5b58\u5728\u3057\u307e\u3059\u304c\u300115\u201330%\u306e\u8ffd\u52a0\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u3001\u30b3\u30a2\u3068\u30bf\u30f3\u30af\u304c\u975e\u6a19\u6e96\u3067\u3042\u308b\u305f\u3081\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u304c\u9577\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u63a5\u7d9a\u3055\u308c\u305f\u6a5f\u5668 (kVA\u3001\u5206\u6563\u578b)<\/th>\n<th>\u6210\u9577\u3092\u8ffd\u52a0 (15%)<\/th>\n<th>\u63a8\u5968\u5b9a\u683c<\/th>\n<th>\u5178\u578b\u7684\u306a\u4fa1\u683c\u7bc4\u56f2<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6700\u592785<\/td>\n<td>98<\/td>\n<td>100<\/td>\n<td>$2,500\u2013$6,000<\/td>\n<\/tr>\n<tr>\n<td>86\u2013135<\/td>\n<td>155<\/td>\n<td>160<\/td>\n<td>$3,500\u2013$8,000<\/td>\n<\/tr>\n<tr>\n<td>136\u2013215<\/td>\n<td>247<\/td>\n<td>250<\/td>\n<td>$4,500\u2013$11,000<\/td>\n<\/tr>\n<tr>\n<td>216\u2013270<\/td>\n<td>310<\/td>\n<td>315<\/td>\n<td>$6,000\u2013$13,000<\/td>\n<\/tr>\n<tr>\n<td>271\u2013430<\/td>\n<td>495<\/td>\n<td>500<\/td>\n<td>$8,000\u2013$16,000<\/td>\n<\/tr>\n<tr>\n<td>431\u2013545<\/td>\n<td>627<\/td>\n<td>630<\/td>\n<td>$10,000\u2013$20,000<\/td>\n<\/tr>\n<tr>\n<td>546\u2013870<\/td>\n<td>1,000<\/td>\n<td>1,000<\/td>\n<td>$15,000\u2013$32,000<\/td>\n<\/tr>\n<tr>\n<td>871\u20131,090<\/td>\n<td>1,254<\/td>\n<td>1,250<\/td>\n<td>$20,000\u2013$40,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4fa1\u683c\u306f\u4e2d\u56fd\u306eFOB\u3067\u306e\u6cb9\u6d78\u30e6\u30cb\u30c3\u30c8\u306e\u6307\u6a19\u3067\u3042\u308a\u3001\u4ed5\u69d8\u3001\u30d6\u30e9\u30f3\u30c9\u3001\u5730\u57df\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u30021\u3064\u306e\u5b9a\u683c\u3092\u4e0a\u3052\u308b\u30b3\u30b9\u30c8 \u2014 \u4f8b\u3048\u3070500\u304b\u3089630 kVA\u306b \u2014 \u306f\u901a\u5e38\u3001\u30e6\u30cb\u30c3\u30c8\u4fa1\u683c\u306e15\u201325%\u3067\u3042\u308a\u3001\u904e\u5c0f\u30b5\u30a4\u30ba\u306e\u5909\u5727\u5668\u306e\u6545\u969c\u30b3\u30b9\u30c8\u306f100%\u306b\u52a0\u3048\u3066\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u4f59\u88d5\u306f\u5b89\u4fa1\u3067\u3059\u3002.<\/p>\n<h2>\u652f\u6301\u4ed5\u69d8\uff1a\u96fb\u5727\u3001\u640d\u5931\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3<\/h2>\n<p>kVA\u304c\u78ba\u5b9a\u3057\u305f\u3089\u3001\u6b8b\u308a\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u6063\u610f\u7684\u306a\u63a8\u6e2c\u3067\u306f\u306a\u304f\u3001\u79d1\u5b66\u7684\u306b\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002\u9867\u5ba2\u306e\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u304b\u3089\u3001\u96fb\u5727\u6bd4\u304c\u6c7a\u5b9a\u3055\u308c\u307e\u3059\uff1a\u4e00\u6b21\u96fb\u5727\u306f11\u300122\u300133\u3001\u307e\u305f\u306f35 kV\uff08\u3059\u306a\u308f\u3061\u3001\u96fb\u6c17\u304c\u9867\u5ba2\u306e\u6577\u5730\u306b\u5165\u308b\u96fb\u5727\uff09\u3067\u3042\u308a\u3001\u4e8c\u6b21\u96fb\u5727\u306f400\u3001415\u3001\u307e\u305f\u306f480 V\uff08\u5229\u7528\u96fb\u5727\uff09\u306b\u7b49\u3057\u3044\u3067\u3059\u3002\u30d9\u30af\u30c8\u30eb\u30b0\u30eb\u30fc\u30d7\u306f\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u57fa\u3065\u304d\u3001\u63a5\u5730\u3055\u308c\u305f\u30b9\u30bf\u30fc\u4f4e\u96fb\u5727\u4f7f\u7528\u306e\u5834\u5408\u306fDyn11\u3067\u3042\u308b\u3079\u304d\u3067\u3042\u308a\u3001\u901a\u5e38\u306fYd11\uff08\u96fb\u5727\u304c\u4e0a\u6607\u3059\u308b\u5834\u6240\u3001\u524d\u8005\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u4f4e\u96fb\u5727\u96fb\u6d41\u304c5%\u672a\u6e80\uff09\u307e\u305f\u306fYd1\u304c\u305d\u308c\u305e\u308c\u306e\u9ad8\u96fb\u5727\u30b1\u30fc\u30b9\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9 (uk%) \u306f\u6545\u969c\u8abf\u6574\u3092\u5f97\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\uff1a4%\uff08\u5c0f\u578b\u914d\u96fb\u5909\u5727\u5668\u7528\uff09\u30015%\u304b\u30896%\uff08\u5b9a\u683c630-1250 kVA\u7528\uff09\u3001\u304a\u3088\u3073\u305d\u308c\u4ee5\u4e0a\u306f\u5b9a\u683c1250 kVA\u3092\u8d85\u3048\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u30b0\u30ea\u30c3\u30c9\u30b3\u30fc\u30c9\u306b\u3088\u3063\u3066\u8981\u6c42\u3055\u308c\u308b\u5834\u5408\u3067\u3059\u3002.<\/p>\n<p>\u640d\u5931\u306f30\u5e74\u9593\u306e\u671f\u9593\u306b\u304a\u3044\u3066\u652f\u914d\u7684\u306a\u30b3\u30b9\u30c8\u3067\u3059\u3002IEC 60076-1\u57fa\u6e96\u306b\u5f93\u3063\u3066\u4fdd\u8a3c\u3055\u308c\u305f\u7121\u8ca0\u8377\u640d\u5931\u3068\u4fdd\u8a3c\u3055\u308c\u305f\u8ca0\u8377\u640d\u5931\u3092\u660e\u8a18\u3057\u3001\u7af6\u5408\u4ed6\u793e\u3068\u306e\u6240\u6709\u30b3\u30b9\u30c8\u306e\u7dcf\u984d\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4f8b\u3048\u3070\u3001600 W\u306e\u7121\u8ca0\u8377\u640d\u5931\u3092\u7bc0\u7d04\u3059\u308b\u30a2\u30e2\u30eb\u30d5\u30a1\u30b9\u30b3\u30a2\u306e1,000 kVA\u306e\u5909\u5727\u5668\u306f\u3001\u304b\u306a\u308a\u306e\u91cf\u306e\u96fb\u529b\u3092\u7bc0\u7d04\u3057\u307e\u3059\uff0815\u5e74\u9593\u30670.1 USD\u306e\u6599\u91d1\u3067\u307b\u307c$2,000\uff09\u306e\u3067\u3001\u5dee\u984d\u3092\u652f\u6255\u3046\u3053\u3068\u304c\u5408\u7406\u7684\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306f\u74b0\u5883\u6761\u4ef6\uff08IP\u7b49\u7d1a\uff09\u306b\u5fdc\u3058\u3066\u9078\u629e\u3059\u308b\u3079\u304d\u3067\u3059\uff1a\u5c4b\u5916\u306e\u6cb9\u6d78\u578b\u306b\u306fIP54\u3001\u5c4b\u5185\u306e\u4e7e\u71e5\u578b\u306b\u306fIP21\u304b\u3089IP44\u3001\u6d17\u6d44\u7528\u9014\u306b\u306fIP56\u3067\u3059\u3002.<\/p>\n<h2 id=\"brands-prices\">\u5b9a\u683c\u5225\u306e\u30d6\u30e9\u30f3\u30c9\u3068\u4fa1\u683c\u5e2f<\/h2>\n<p>\u30d6\u30e9\u30f3\u30c9\u306e\u9078\u629e\u306f\u3001\u6280\u8853\u7684\u8a08\u7b97\u306e\u4e0a\u306b\u3042\u308b\u5546\u696d\u7684\u306a\u5c64\u3067\u3059\u3002\u540c\u3058\u79d1\u5b66\u7684\u4ed5\u69d8\u306e\u5834\u5408\u3001\u4fa1\u683c\u306f\u30d6\u30e9\u30f3\u30c9\u306e\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0\u3068\u6587\u66f8\u306e\u54c1\u8cea\u306b\u5fdc\u3058\u30662\u500d\u304b\u30893\u500d\u306e\u5dee\u304c\u751f\u3058\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d6\u30e9\u30f3\u30c9<\/th>\n<th>\u5f37\u5ea6<\/th>\n<th>250 kVA\u306e\u4fa1\u683c<\/th>\n<th>630 kVA\u306e\u4fa1\u683c<\/th>\n<th>1,250 kVA\u306e\u4fa1\u683c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ABB<\/td>\n<td>\u30b0\u30ed\u30fc\u30d0\u30eb\u30b5\u30fc\u30d3\u30b9\u3001\u30d5\u30eb\u30ec\u30f3\u30b8<\/td>\n<td>$12,000\u2013$20,000<\/td>\n<td>$22,000\u2013$38,000<\/td>\n<td>$38,000\u301c$60,000<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30fc\u30e1\u30f3\u30b9<\/td>\n<td>\u52b9\u7387\u3001\u30c7\u30b8\u30bf\u30eb\u76e3\u8996<\/td>\n<td>$12,000\u2013$22,000<\/td>\n<td>$24,000\u2013$40,000<\/td>\n<td>$40,000\u301c$65,000<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<\/td>\n<td>\u30c9\u30e9\u30a4\u30bf\u30a4\u30d7\u3068\u4f4e\u5727\u7d71\u5408<\/td>\n<td>$11,000\u2013$18,000<\/td>\n<td>$20,000\u2013$34,000<\/td>\n<td>$35,000\u2013$55,000<\/td>\n<\/tr>\n<tr>\n<td>\u65e5\u7acb\u30a8\u30ca\u30b8\u30fc<\/td>\n<td>\u30b0\u30ea\u30c3\u30c9\u8cc7\u7523\u3001\u30d1\u30ef\u30fc\u30c8\u30e9\u30f3\u30b9<\/td>\n<td>$12,000\u2013$21,000<\/td>\n<td>$23,000\u2013$38,000<\/td>\n<td>$39,000\u2013$62,000<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30fc\u30c8\u30f3<\/td>\n<td>\u5317\u7c73\u306e\u9075\u5b88<\/td>\n<td>$10,000\u2013$17,000<\/td>\n<td>$18,000\u2013$32,000<\/td>\n<td>$32,000\u2013$52,000<\/td>\n<\/tr>\n<tr>\n<td>CG\u30d1\u30ef\u30fc \/ TBEA<\/td>\n<td>\u30dc\u30ea\u30e5\u30fc\u30e0\u30d7\u30e9\u30a4\u30b7\u30f3\u30b0<\/td>\n<td>$7,000\u2013$12,000<\/td>\n<td>13,000\u201322,000 USD<\/td>\n<td>$24,000\u2013$40,000<\/td>\n<\/tr>\n<tr>\n<td>\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/td>\n<td>IEC 60076\u3001\u8a66\u9a13\u5831\u544a\u66f8\u3001\u9285<\/td>\n<td>$6,000\u2013$11,000<\/td>\n<td>$11,000\u2013$20,000<\/td>\n<td>$20,000\u2013$36,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0a\u8a18\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u4f01\u696d\u306f\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u30bb\u30af\u30bf\u30fc\u3084\u305d\u306e\u4ed6\u306e\u91cd\u8981\u306a\u5206\u91ce\u3078\u306e\u8ca2\u732e\u3092\u901a\u3058\u3066\u3001\u305d\u306e\u5730\u4f4d\u3092\u78ba\u7acb\u3057\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u540c\u3058\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u3059\u3067\u306b\u79d1\u5b66\u7684\u4ed5\u69d8\u306b\u3088\u3063\u3066\u4fdd\u8b77\u3055\u308c\u3066\u3044\u308b\u5de5\u696d\u30d7\u30e9\u30f3\u30c8\u3001\u5009\u5eab\u3001\u518d\u751f\u53ef\u80fd\u30a8\u30cd\u30eb\u30ae\u30fc\u65bd\u8a2d\u306b\u306f\u9069\u7528\u3067\u304d\u307e\u305b\u3093\u3002\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b\u306f\u300110 kVA\u304b\u3089100 MVA\u306e\u7bc4\u56f2\u3067IEC 60076\u8a8d\u8a3c\u3092\u53d7\u3051\u305f\u30c8\u30e9\u30f3\u30b9\u3092\u88fd\u9020\u3057\u3001\u9285\u5dfb\u304d\u30c8\u30e9\u30f3\u30b9\u3092\u6a19\u6e96\u88fd\u54c1\u3068\u3057\u3066\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u3059\u3079\u3066\u306e\u30a2\u30a4\u30c6\u30e0\u306b\u306f\u3001\u5fc5\u8981\u306a\u640d\u5931\u3068\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u7d0d\u54c1\u3055\u308c\u305f\u30a2\u30a4\u30c6\u30e0\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u5831\u544a\u66f8\u304c\u4ed8\u5c5e\u3057\u3066\u3044\u307e\u3059\u3002\u8a08\u7b97\u304c\u7279\u5b9a\u306e\u5b9a\u683c\u3092\u793a\u3059\u30c8\u30e9\u30f3\u30b9\u306e\u5834\u5408\u3001\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u305f\u4f5c\u696d\u306e\u30ec\u30d9\u30eb\u3092\u8a55\u4fa1\u3059\u308b\u306e\u306f\u5bb9\u6613\u3067\u3059\u3002\u9867\u5ba2\u306b\u30d1\u30f3\u30d5\u30ec\u30c3\u30c8\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u4fe1\u3058\u308b\u3088\u3046\u306b\u6c42\u3081\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u8607\u8fba\u306f\u305d\u306e\u4e3b\u5f35\u306e\u8a3c\u62e0\u3092\u5171\u6709\u3057\u307e\u3059\u3002.<\/p>\n<h2 id=\"selection-formula\">\u5b8c\u5168\u306a\u9078\u629e\u5f0f\u3068\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n<p>\u8981\u7d04\u3059\u308b\u3068\u3001\u6a5f\u5668\u306e\u96fb\u529b\u9078\u629e\u5f0f\u306b\u57fa\u3065\u304f\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30a4\u30ba\u8a08\u7b97\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n<p>\u8a2d\u8a08kVA\u8a2d\u5b9a = \u5408\u8a08\uff08\u8ca0\u8377_kVA \u00d7 \u9700\u8981\u4fc2\u6570\uff09\u00d7 \u4e00\u81f4\u4fc2\u6570 \u00d7 \uff081 + \u6210\u9577\u30de\u30fc\u30b8\u30f3\uff09<\/p>\n<p>\u305d\u3057\u3066\u3001\u9054\u6210\u53ef\u80fd\u306a\u8ca0\u8377\u306e2\u3064\u306e\u57fa\u6e96\uff1a\u6301\u7d9a\u8ca0\u8377 \u2264 \u5b9a\u683c\uff08\u6cb9\/\u4e7e\u71e5\uff09\u306780\u201390%\u3001\u958b\u59cb\u904e\u6e21\u304cIEC 60076-7\u306b\u5f93\u3063\u305f\u30e6\u30cb\u30c3\u30c8\u306e\u77ed\u6642\u9593\u80fd\u529b\u5236\u9650\u5185\u3067\u767a\u751f\u3057\u307e\u3059\u3002\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u306f\u6b21\u306e\u64cd\u4f5c\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>kW\u3001PF\u3001\u304a\u3088\u3073\u30d5\u30eb\u30ed\u30fc\u30c9\u96fb\u6d41\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6301\u3064\u6a5f\u68b0\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002.<br \/>\n\u6a5f\u5668\u3054\u3068\u306bkVA\u306b\u5909\u63db\u3057\u3001\u30d5\u30a3\u30fc\u30c0\u30fc\u3054\u3068\u306b\u5206\u985e\u3057\u307e\u3059\u3002.<br \/>\n\u30b0\u30eb\u30fc\u30d7\u3054\u3068\u306b\u9700\u8981\u304a\u3088\u3073\u4e00\u81f4\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u9069\u7528\u3057\u307e\u3059\u3002.<br \/>\n\u30e2\u30fc\u30bf\u30fc\u306e\u6700\u5927\u59cb\u52d5\u9700\u8981\u3092\u5b9a\u683c\u3068\u7167\u3089\u3057\u5408\u308f\u305b\u3066\u78ba\u8a8d\u3057\u307e\u3059\u3002.<br \/>\n10\u201320%\u306e\u6210\u9577\u30de\u30fc\u30b8\u30f3\u3092\u8ffd\u52a0\u3057\u3001\u6a19\u6e96\u5b9a\u683c\u306b\u4e38\u3081\u307e\u3059\u3002.<br \/>\n\u96fb\u5727\u3001\u30d9\u30af\u30c8\u30eb\u30b0\u30eb\u30fc\u30d7\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u640d\u5931\u3001\u304a\u3088\u3073\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002.<br \/>\n\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068TCO\u8981\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5165\u672d\u8005\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10900\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Load-Types-Starting-current-Buyer-checklist.webp\" alt=\"\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>\u6a5f\u5668\u306ekW\u5b9a\u683c\u304b\u3089\u30c8\u30e9\u30f3\u30b9\u3092\u3069\u306e\u3088\u3046\u306b\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3057\u307e\u3059\u304b\uff1f<\/h3>\n<p>\u5404\u8ca0\u8377\u306ekW\u306f\u3001\u305d\u306e\u529b\u7387\u3067\u5272\u3063\u3066kVA\u306b\u5909\u63db\u3057\u3001\u5408\u8a08\u3057\u3066\u7dcf\u6570\u3092\u5f97\u3066\u304b\u3089\u3001\u9700\u8981\u4fc2\u6570\uff08\u307b\u3068\u3093\u3069\u306e\u6a5f\u68b0\u3067\u7d040.9\uff09\u3068\u4e00\u81f4\u4fc2\u6570\uff080.7\u304b\u30890.85\u306e\u9593\uff09\u3092\u9069\u7528\u3057\u3001\u5408\u8a08\u3067\u7d0410-20\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u6210\u9577\u3092\u8003\u616e\u3057\u3001\u6b21\u306e\u6a19\u6e96\u5b9a\u683c\u306b\u4e38\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001180 kW\u3067PF\u304c0.85\u306e\u5834\u5408\u3001212 kVA\u306b\u76f8\u5f53\u3057\u3001\u4e00\u81f4\u304c0.85\u306715\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u6210\u9577\u3092\u9069\u7528\u3059\u308b\u3068\u3001\u8a2d\u8a08\u9700\u8981\u306f\u7d04207 kVA\u3068\u306a\u308a\u3001250 kVA\u306e\u6a5f\u68b0\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u8ca0\u8377\u304b\u3089\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30a4\u30ba\u8a2d\u5b9a\u306b\u95a2\u3059\u308b\u7d4c\u9a13\u5247\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4e00\u822c\u7684\u306a\u521d\u56de\u30eb\u30fc\u30eb\u306f\u3001\u5909\u5727\u5668\u306f\u4e88\u60f3\u3055\u308c\u308b\u6700\u5927kW\u9700\u8981\u306e1.2\u301c1.5\u500d\u306b\u5b9a\u683c\u3055\u308c\u308b\u3079\u304d\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u529b\u7387\u3084\u5c06\u6765\u306e\u6210\u9577\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3042\u304f\u307e\u3067\u30b9\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u30c4\u30fc\u30eb\u3067\u3059\u3002\u30e2\u30fc\u30bf\u30fc\u304c\u5927\u304d\u3044\u3001\u529b\u7387\u304c\u4f4e\u3044\u3001\u307e\u305f\u306f\u9ad8\u8abf\u6ce2\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u79d1\u5b66\u7684\u65b9\u6cd5\u304c\u5e38\u306b\u52dd\u308a\u307e\u3059 \u2014 \u6700\u7d42\u7684\u306a\u6c7a\u5b9a\u306b\u306f\u4e0a\u8a18\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3001\u30eb\u30fc\u30eb\u3067\u306f\u306a\u304f\u305d\u306e\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h3>\u306a\u305c\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f\u79c1\u306e\u6a5f\u5668\u306e\u5408\u8a08\u3088\u308a\u3082\u5927\u304d\u3044\u306e\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4e09\u3064\u306e\u7406\u7531\u304c\u3042\u308a\u307e\u3059\uff1a\u529b\u7387\uff08kVA &gt; kW\uff09\u3001\u59cb\u52d5\u96fb\u6d41\uff08100 kW\u306e\u30e2\u30fc\u30bf\u30fc\u306f\u6570\u79d2\u9593600\u4ee5\u4e0a\u306ekVA\u3092\u8981\u6c42\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff09\u3001\u304a\u3088\u3073\u5c06\u6765\u306e\u6210\u9577\uff08\u3053\u308c\u306f\u5e38\u306b\u52a0\u7b97\u3055\u308c\u307e\u3059\uff09\u3002\u3042\u306a\u305f\u306e\u6a5f\u5668\u304c\u5927\u304d\u306aDOL\u30e2\u30fc\u30bf\u30fc\u30670.8 PF\u3067\u52d5\u4f5c\u3059\u308b\u5834\u5408\u3001\u5358\u7d14\u306akW\u306e\u5408\u8a08\u3088\u308a\u308225\u301c60%\u4e0a\u306e\u5b9a\u683c\u306f\u901a\u5e38\u3067\u3059 \u2014 \u3053\u306e\u30ac\u30a4\u30c9\u306e\u98df\u54c1\u5de5\u5834\u306e\u4f8b\u3067\u306f152%\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002.<\/p>\n<h3>\u5c06\u6765\u306e\u62e1\u5f35\u306e\u305f\u3081\u306b\u5909\u5727\u5668\u3092\u30aa\u30fc\u30d0\u30fc\u30b5\u30a4\u30ba\u306b\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n<p>\u306f\u3044\u3001\u901a\u5e38\u306f\u8ce2\u660e\u3067\u3059\u304c\u3001\u7406\u306b\u304b\u306a\u3063\u305f\u7bc4\u56f2\u5185\u3067\u306e\u307f\u3067\u3059\u300210\u301c20%\u306e\u30de\u30fc\u30b8\u30f3\u306f\u3001\u30b9\u30c6\u30c3\u30d7\u30a2\u30c3\u30d7\u3054\u3068\u306b15\u301c25%\u306e\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u300124\/7\u7a3c\u50cd\u3059\u308b\u7121\u8ca0\u8377\u640d\u5931\u3092\u308f\u305a\u304b\u306b\u5897\u52a0\u3055\u305b\u307e\u3059\u3002\u7d0440%\u3092\u8d85\u3048\u308b\u30aa\u30fc\u30d0\u30fc\u30b5\u30a4\u30ba\u306f\u3001\u8ca0\u8377\u304c2\u301c3\u5e74\u4ee5\u5185\u306b\u5230\u7740\u3059\u308b\u3053\u3068\u304c\u78ba\u5b9f\u3067\u306a\u3044\u9650\u308a\u3001\u8cc7\u672c\u3068\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u7121\u99c4\u306b\u3057\u307e\u3059\u3002\u79d1\u5b66\u7684\u306a\u7b54\u3048\uff1a\u30de\u30fc\u30b8\u30f3\u3092\u5b9f\u969b\u306e\u62e1\u5f35\u8a08\u753b\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h3>\u5909\u5727\u5668\u306e\u5b9a\u683c\u30921\u30b9\u30c6\u30c3\u30d7\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u306e\u306b\u3069\u308c\u304f\u3089\u3044\u306e\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u307e\u3059\u304b\uff1f<\/h3>\n<p>??\u3089630 kVA\u306b\u79fb\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u901a\u5e38\u306f$2,000\u2013$4,000\uff08\u7d0415\u201325%\uff09\u304c\u30e6\u30cb\u30c3\u30c8\u81ea\u4f53\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3059\u30021,000\u304b\u30891,250 kVA\u306b\u79fb\u884c\u3059\u308b\u3068\u3001$4,000\u2013$8,000\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002\u305d\u308c\u306b\u5bfe\u3057\u3066\u3001\u30b5\u30fc\u30d3\u30b9\u4e2d\u306b\u6545\u969c\u3059\u308b\u904e\u5c0f\u30b5\u30a4\u30ba\u306e\u30c8\u30e9\u30f3\u30b9\u306f\u3001\u4ea4\u63db\u306b$8,000\u2013$30,000\u3068\u751f\u7523\u306e\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306e\u30d7\u30ec\u30df\u30a2\u30e0\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3051\u308b\u6700\u3082\u5b89\u4fa1\u306a\u4fdd\u967a\u3067\u3059\u3002.<\/p>\n<h2 id=\"references\">\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/200\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-1: \u96fb\u529b\u5909\u5727\u5668 \u2014 \u4e00\u822c<\/a> \u2014 \u5b9a\u683c\u3001\u8a31\u5bb9\u5dee\u3001\u304a\u3088\u3073\u5b9a\u671f\u8a66\u9a13\u306e\u6a19\u6e96\u3002.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/57088\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60076-7: \u6cb9\u6d78\u578b\u96fb\u529b\u5909\u5727\u5668\u306e\u8ca0\u8377\u30ac\u30a4\u30c9<\/a> \u2014 \u59cb\u52d5\u904e\u6e21\u306b\u5bfe\u3059\u308b\u77ed\u6642\u9593\u304a\u3088\u3073\u30b5\u30a4\u30af\u30ea\u30c3\u30af\u8ca0\u8377\u306e\u5236\u9650\u3002.<\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/ieee\/C57.12.00\/6735\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.12.00: \u6db2\u4f53\u6d78\u6f2c\u30c8\u30e9\u30f3\u30b9\u306e\u4e00\u822c\u8981\u4ef6<\/a> \u2014 \u5317\u7c73\u306e\u5b9a\u683c\u304a\u3088\u3073\u8a66\u9a13\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3002.<\/li>\n<li><a href=\"https:\/\/www.electrical4u.com\/transformer-sizing\/\" rel=\"nofollow noopener\" target=\"_blank\">Electrical4U \u2014 \u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u8a2d\u5b9a<\/a> \u2014 \u30b5\u30a4\u30ba\u8a2d\u5b9a\u306e\u5b9f\u4f8b\u3068\u9700\u8981\u4fc2\u6570\u306e\u30ac\u30a4\u30c0\u30f3\u30b9\u3002.<\/li>\n<li><a href=\"https:\/\/www.eaton.com\/us\/en-us\/products\/transformers\/transformer-consultant.html\" rel=\"nofollow noopener\" target=\"_blank\">Eaton \u2014 \u30c8\u30e9\u30f3\u30b9\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8<\/a> \u2014 kVA\u8a08\u7b97\u3068\u9078\u629e\u306e\u305f\u3081\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c4\u30fc\u30eb\u3002.<\/li>\n<li><a href=\"https:\/\/www.fluke.com\/en-us\/learn\/blog\/power-quality\/power-factor\" rel=\"nofollow noopener\" target=\"_blank\">Fluke \u2014 \u529b\u7387\u306e\u7406\u89e3<\/a> \u2014 \u529b\u7387\u3068\u9700\u8981\u6e2c\u5b9a\u306e\u305f\u3081\u306e\u5b9f\u7528\u7684\u306a\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3002.<\/li>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Demand_factor\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 \u9700\u8981\u4fc2\u6570<\/a> \u2014 \u9700\u8981\u3001\u591a\u69d8\u6027\u3001\u304a\u3088\u3073\u4e00\u81f4\u4fc2\u6570\u306e\u5b9a\u7fa9\u3068\u9069\u7528\u3002.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p>\u6a5f\u5668\u306e\u96fb\u529b\u306b\u57fa\u3065\u304f\u79d1\u5b66\u7684\u306a\u5909\u5727\u5668\u306e\u9078\u5b9a\u306f\u3001\u5358\u306bkW\u3092\u9069\u5207\u306a\u529b\u7387\u3067kVA\u306b\u5909\u63db\u3057\u3001\u9700\u8981\u3068\u4e00\u81f4\u3092\u8003\u616e\u3057\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u59cb\u52d5\u904e\u6e21\u3092\u5c0a\u91cd\u3057\u3001\u6b63\u76f4\u306a\u6210\u9577\u30de\u30fc\u30b8\u30f3\u3092\u52a0\u3048\u308b\u3068\u3044\u3046\u898f\u5f8b\u3067\u3059\u3002\u7b97\u8853\u306f\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093 \u2014 \u3057\u304b\u3057\u3001\u3044\u305a\u308c\u304b\u306e\u9805\u76ee\u3092\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u3068\u3001\u59cb\u52d5\u8ca0\u8377\u306e\u4e0b\u3067\u6545\u969c\u3059\u308b\u30e6\u30cb\u30c3\u30c8\u304b\u3001\u30a2\u30a4\u30c9\u30eb\u5bb9\u91cf\u306b\u8cc7\u672c\u3092\u7121\u99c4\u306b\u3059\u308b\u30e6\u30cb\u30c3\u30c8\u304c\u751f\u3058\u307e\u3059\u3002\u98df\u54c1\u5de5\u5834\u306e\u4f8b\u306f\u3001\u30b7\u30e7\u30fc\u30c8\u30ab\u30c3\u30c8\u306e\u30b3\u30b9\u30c8\u3092\u8a3c\u660e\u3057\u307e\u3057\u305f\uff1a\u5358\u7d14\u306a250 kVA\u306e\u898b\u7a4d\u3082\u308a\u3068\u6b63\u3057\u3044630 kVA\u306e\u6bd4\u8f03\u3067\u3059\u3002.<\/p>\n<ul>\n<li>\u5e38\u306b\u5b9f\u969b\u306e\u529b\u7387\u3092\u4f7f\u7528\u3057\u3066kW\u3092kVA\u306b\u5909\u63db\u3057\u3066\u304f\u3060\u3055\u3044 \u2014 kW\u3092\u76f4\u63a5\u5408\u8a08\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002.<\/li>\n<li>\u9700\u8981\u3068\u4e00\u81f4\u4fc2\u6570\u3092\u9069\u7528\u3057\u3001\u6700\u5927\u306e\u30e2\u30fc\u30bf\u30fc\u306e\u59cb\u52d5\u9700\u8981\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>10\u201320%\u306e\u6210\u9577\u3092\u8ffd\u52a0\u3057\u3001\u6a19\u6e96\u306eIEC 60076\u8a55\u4fa1\u306b\u5207\u308a\u4e0a\u3052\u307e\u3059\u3002.<\/li>\n<li>\u6307\u5b9a\u3055\u308c\u305f\u640d\u5931\u3068\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u78ba\u8a8d\u3055\u308c\u308b\u3088\u3046\u306b\u3001\u9700\u8981\u5de5\u5834\u306e\u8a66\u9a13\u5831\u544a\u66f8\u3092\u8981\u6c42\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ul>\n<p>\u6a5f\u5668\u306e\u96fb\u529b\u8a08\u7b97\u304c\u5b8c\u4e86\u3057\u3001\u5b9a\u683c\u304c\u8a2d\u5b9a\u3055\u308c\u305f\u3068\u304d\u3001, <a href=\"https:\/\/subian-electric.com\/ja\/\">\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/a> \u3042\u306a\u305f\u306e\u4ed5\u69d8\u306b\u5bfe\u3057\u3066\u300110 kVA\u304b\u3089100 MVA\u307e\u3067\u306eIEC 60076\u8a8d\u8a3c\u30c8\u30e9\u30f3\u30b9\u3092\u898b\u7a4d\u3082\u308a\u307e\u3059 \u2014 \u540d\u672d\u306e\u6570\u5b57\u304c\u3042\u306a\u305f\u304c\u30b5\u30a4\u30ba\u3092\u6c7a\u5b9a\u3057\u305f\u6570\u5b57\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u5de5\u5834\u8a66\u9a13\u5831\u544a\u66f8\u304c\u6dfb\u4ed8\u3055\u308c\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>A textile factory in Vietnam was about to put into operation twelve weaving machines with 15 kW ratting each. The conclusion of the owner was pretty simple: twelve machines multiplied by 15 kW gives 180 kW, consequently, a 200 kVA transformer is needed. At that point, the electrical contractor cancelled the order. In reality, each machine consumes around 18 kVA with 0.83 power factor; their inrush current is up to six times higher than the running one; air-compressors feeding these machines add 60 kVA; moreover, two lines are planned to be added to the factory already. While using a scientifically justified approach, the calculations showed that a 500 kVA transformer [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":10899,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-10898","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\/10898","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\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/comments?post=10898"}],"version-history":[{"count":2,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10898\/revisions"}],"predecessor-version":[{"id":11007,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10898\/revisions\/11007"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/10899"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=10898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=10898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=10898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}