{"id":10559,"date":"2026-08-29T23:43:00","date_gmt":"2026-08-29T15:43:00","guid":{"rendered":"https:\/\/q8bbzjnpm5.wpdns.site\/?p=10559"},"modified":"2026-08-29T23:43:00","modified_gmt":"2026-08-29T15:43:00","slug":"how-to-calculate-kva-for-three-phase-power-subian-electric-has-the-answer","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/news\/how-to-calculate-kva-for-three-phase-power-subian-electric-has-the-answer\/","title":{"rendered":"\u4e09\u76f8\u96fb\u529b\u306ekVA\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u306f\uff1fSubian Electric\u304c\u7b54\u3048\u3092\u6301\u3063\u3066\u3044\u307e\u3059"},"content":{"rendered":"<p>\u30b6\u30f3\u30d3\u30a2\u306e\u91b8\u9020\u4f1a\u793e\u306f\u3001\u65b0\u3057\u3044\u30dc\u30c8\u30ea\u30f3\u30b0\u65bd\u8a2d\u306e\u305f\u3081\u306b630 kVA\u306e\u5909\u5727\u5668\u3092\u8abf\u9054\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u96fb\u6c17\u6280\u5e2b\u304b\u3089\u305d\u306e\u30bf\u30a4\u30d7\u306e\u65bd\u8a2d\u306b\u5bfe\u3057\u3066630\u304c\u6a19\u6e96\u306e\u6570\u5024\u3067\u3042\u308b\u3068\u306e\u60c5\u5831\u3092\u53d7\u3051\u53d6\u3063\u305f\u5f8c\u306e\u3053\u3068\u3067\u3059\u3002\u534a\u5e74\u5f8c\u3001\u30e6\u30cb\u30c3\u30c8\u304c\u6bce\u65e5\u975e\u5e38\u306b\u9ad8\u6e29\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3053\u3068\u3001\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u30d0\u30f3\u30af\u304c\u4f5c\u52d5\u3059\u308b\u3068\u304d\u306b\u96fb\u5727\u304c\u4f4e\u4e0b\u3059\u308b\u3053\u3068\u3001\u305d\u3057\u3066\u96fb\u529b\u4f1a\u793e\u304c\u91b8\u9020\u6240\u306b\u9700\u8981\u30da\u30ca\u30eb\u30c6\u30a3\u3092\u8105\u8feb\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u767a\u899a\u3057\u307e\u3057\u305f\u3002\u5b9f\u969b\u306b\u306f\u3001\u6b63\u78ba\u306b\u6e2c\u5b9a\u3055\u308c\u305f\u5b9f\u969b\u306e\u9700\u8981\u5024\u306f380 kVA\u3067\u3001\u30d4\u30fc\u30af\u306f520 kVA\u3067\u3057\u305f\u3002\u3053\u306e\u5834\u5408\u3001500 kVA\u306e\u30e6\u30cb\u30c3\u30c8\u304c\u7406\u60f3\u7684\u3067\u3057\u305f\u3002\u4f1a\u793e\u304c\u72af\u3057\u305f\u6838\u5fc3\u7684\u306a\u9593\u9055\u3044\u306f\u3001\u4e09\u76f8\u8ca0\u8377\u306e\u5b9f\u969b\u306ekVA\u3092\u8a08\u7b97\u305b\u305a\u306b\u5909\u5727\u5668\u306e\u5b9a\u683c\u3092\u6ce8\u6587\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u5f0f\u3001\u529b\u7387\u3001\u5b9f\u969b\u306e\u4f8b\u3092\u7528\u3044\u3066\u4e09\u76f8\u96fb\u529b\u306ekVA\u3092\u6b63\u78ba\u306b\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3068\u3001\u9069\u5207\u306a\u5909\u5727\u5668\u306e\u5b9a\u683c\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\u3002.<\/p>\n<blockquote><p>\u8981\u3059\u308b\u306b\u3001\u4e09\u76f8\u96fb\u529b\u306ekVA\u306e\u516c\u5f0f\u306fkVA= (\u221a3 \u00d7 \u30dc\u30eb\u30c8 \u00d7 \u30a2\u30f3\u30d7) \u00f7 1000\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001360 A\u306e\u96fb\u6d41\u3092\u5f15\u304f400 V\u306e\u30e9\u30a4\u30f3\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u305d\u308c\u306f(1.732 \u00d7 400 \u00d7 360) \u00f7 1000\u3068\u306a\u308a\u3001249.4 kVA\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001250 kVA\u306e\u5909\u5727\u5668\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u300110-20%\u306e\u8ffd\u52a0\u304c\u5fc5\u8981\u3067\u3059\u3002kW\u304b\u3089kVA\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u3001\u529b\u7387\u3067\u5272\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1akVA = kW \u00f7 PF\u3002PF = 0.85\u306e\u5834\u5408\u3001200 kW = 235 kVA\u3067\u3059\u3002\u5358\u76f8\u5206\u914d\u306e\u5834\u5408\u3001kVA = (\u30dc\u30eb\u30c8 \u00d7 \u30a2\u30f3\u30d7) \u00f7 1000\u3067\u3059\u3002.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10560\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-To-Calculate-Kva-For-Three-Phase-Power-Subian-Electric-Has-The-Answer.webp\" alt=\"\u4e09\u76f8\u96fb\u529b\u306eKva\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\uff1aSubian Electric\u304c\u7b54\u3048\u3092\u63d0\u4f9b\" width=\"1448\" height=\"1086\" \/><\/p>\n<hr \/>\n<h2 id=\"three-phase-formula\">\u4e09\u76f8kVA\u306e\u516c\u5f0f<\/h2>\n<p>\u4e09\u76f8\u306e\u898b\u304b\u3051\u306e\u96fb\u529b\u306e\u65b9\u7a0b\u5f0f\u306f\u3001\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u6c7a\u5b9a\u306b\u304a\u3044\u3066\u91cd\u8981\u3067\u3059\uff1akVA = (\u221a3 \u00d7 V_L-L \u00d7 I_L) \u00f7 1000\u3067\u3059\u3002.<\/p>\n<p>VL-L\u306f\u30dc\u30eb\u30c8\u3067\u306e\u30e9\u30a4\u30f3\u9593\u96fb\u5727\u3092\u6307\u3057\u3001IL\u306f\u30a2\u30f3\u30da\u30a2\u3067\u306e\u30e9\u30a4\u30f3\u96fb\u6d41\u3092\u6307\u3057\u307e\u3059\u3002\u221a3\u306f\u4e09\u76f8\u30b7\u30b9\u30c6\u30e0\u306e\u65b9\u7a0b\u5f0f\u306b\u5fc5\u8981\u306a\u90e8\u5206\u3067\u3042\u308a\u3001\u96fb\u5727\u3068\u4f4d\u76f8\u96fb\u6d41\u306f120\u00b0\u305a\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u96fb\u529b\u306b\u95a2\u3059\u308b\u4eee\u5b9a\u306f\u3001\u5fc5\u8981\u306a\u96fb\u529b\u304c\u4e09\u76f8\u96fb\u529b\u306e\u5408\u8a08\u306b\u7b49\u3057\u3044\u3068\u3044\u3046\u4e8b\u5b9f\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7279\u5b9a\u306e\u96fb\u6d41\u3092\u751f\u6210\u3067\u304d\u308b\u4e09\u76f8\u6a5f\u5668\u306f\u3001\u305d\u306e\u5358\u76f8\u306e\u5bfe\u5fdc\u7269\u306e1.732\u500d\u306e\u96fb\u529b\u3092\u4f1d\u9001\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p>\u4f8b\u3068\u3057\u3066\u3001200\u30a2\u30f3\u30da\u30a2\u306e\u96fb\u6d41\u3092\u6301\u3064480\u30dc\u30eb\u30c8\u306e\u4e09\u76f8\u30d5\u30a3\u30fc\u30c0\u30fc\u306e\u5834\u5408\u3001\u51fa\u529b\u96fb\u529b\u306fkVA = 1.732 \u00d7 480 \u00d7 200 \u00f7 1000 = 166.3 kVA\u306b\u7b49\u3057\u3044\u3067\u3059\u300215%\u306e\u5b89\u5168\u30de\u30fc\u30b8\u30f3\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u7d50\u679c\u3068\u3057\u3066191 kVA\u306e\u9700\u8981\u304c\u5f97\u3089\u308c\u3001\u3053\u308c\u306f200 kVA\u306e\u5909\u5727\u5668\u306b\u4e38\u3081\u3089\u308c\u307e\u3059\u3002\u8a08\u7b97\u306f\u4ed6\u306e\u30b1\u30fc\u30b9\u3001\u4f8b\u3048\u3070\u767a\u96fb\u6a5f\u3084\u30d5\u30a3\u30fc\u30c0\u30fc\u306e\u30b5\u30a4\u30ba\u6c7a\u5b9a\u3067\u3082\u7570\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n<h2 id=\"single-phase\">\u5358\u76f8\u3068\u4e09\u76f8\u306e\u8a08\u7b97<\/h2>\n<p>\u3053\u308c\u3089\u4e8c\u3064\u3092\u6df7\u540c\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5f97\u3089\u308c\u308b\u7d50\u679c\u306f\u30011,732\u306e\u4fc2\u6570\u306b\u3088\u3063\u3066\u9593\u9055\u3063\u3066\u304a\u308a\u3001\u4e8c\u6bb5\u968e\u4f4e\u3044\u5b9a\u683c\u306e\u5909\u5727\u5668\u3092\u8cfc\u5165\u3059\u308b\u306e\u306b\u5341\u5206\u3067\u3059\u3002\u5358\u76f8\u306e\u516c\u5f0f\u306f\u221a3\u306e\u4fc2\u6570\u3092\u7701\u7565\u3057\u307e\u3059\uff1a<\/p>\n<p>kVA\uff08\u5358\u76f8\uff09= (V \u00d7 A) \u00f7 1000<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30b7\u30b9\u30c6\u30e0<\/th>\n<th>\u516c\u5f0f<\/th>\n<th>\u4f8b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5358\u76f8<\/td>\n<td>kVA = (V \u00d7 A) \u00f7 1000<\/td>\n<td>240 V, 100 A \u2192 24.0 kVA<\/td>\n<\/tr>\n<tr>\n<td>\u4e09\u76f8<\/td>\n<td>kVA = (\u221a3 \u00d7 V \u00d7 A) \u00f7 1000<\/td>\n<td>240 V, 100 A \u2192 41.6 kVA<\/td>\n<\/tr>\n<tr>\n<td>\u4e09\u76f8<\/td>\n<td>kVA = (\u221a3 \u00d7 V \u00d7 A) \u00f7 1000<\/td>\n<td>400 V, 200 A \u2192 138.6 kVA<\/td>\n<\/tr>\n<tr>\n<td>\u4e09\u76f8<\/td>\n<td>kVA = (\u221a3 \u00d7 V \u00d7 A) \u00f7 1000<\/td>\n<td>480 V, 200 A \u2192 166.3 kVA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0a\u306e2\u884c\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\uff1a240V\u3001100A\u306e\u540c\u3058\u8ca0\u8377\u306f\u5358\u76f8\u306724kVA\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u4e09\u76f8\u3067\u306f41.6 kVA\u3067\u3059\u3002\u4e09\u76f8\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4e09\u76f8\u306e\u516c\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u305c\u306a\u3089\u3001\u5358\u76f8\u306e\u7d50\u679c\u306f\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u309242%\u904e\u5c0f\u8a55\u4fa1\u3059\u308b\u304b\u3089\u3067\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10563\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/From-kW-to-kVA-The-Power-Factor-Step.webp\" alt=\"kW\u304b\u3089kVA\u3078\uff1a\u529b\u7387\u306e\u30b9\u30c6\u30c3\u30d7\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"power-factor\">kW\u304b\u3089kVA\u3078\uff1a\u529b\u7387\u306e\u30b9\u30c6\u30c3\u30d7<\/h2>\n<p>\u540d\u672d\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u60c5\u5831\u306f\u3001kW\u307e\u305f\u306f\u99ac\u529b\u306e\u3044\u305a\u308c\u304b\u306e\u5f62\u5f0f\u3067\u983b\u7e41\u306b\u63d0\u4f9b\u3055\u308c\u307e\u3059\u304c\u3001kVA\u3068\u3057\u3066\u306f\u307e\u308c\u3067\u3059\u3002\u4e00\u822c\u7684\u306a\u5206\u6bcd\u306f\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306e\u9593\u306e\u89d2\u5ea6\u306e\u30b3\u30b5\u30a4\u30f3\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u529b\u7387\u3067\u3042\u308a\u3001\u30a8\u30f3\u30b8\u30f3\u306e\u5834\u5408\u306f\u901a\u5e380.8\u301c0.9\u3001\u62b5\u6297\u8ca0\u8377\u304a\u3088\u3073VFD\u306e\u5834\u5408\u306f0.95\u301c1.0\u3068\u898b\u7a4d\u3082\u3089\u308c\u307e\u3059\u3002.<\/p>\n<p>kVA = kW \u00f7 \u529b\u7387<\/p>\n<p>85 PF\u306e100 kW\u30a8\u30f3\u30b8\u30f3\u306f117.6 kVA\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002\u53b3\u5bc6\u306a\u62b5\u6297\u30d2\u30fc\u30bf\u30fc\u306e100 kW\u306f\u6b63\u78ba\u306b100 kVA\u3092\u6d88\u8cbb\u3057\u307e\u3059\u3002PF\u3092\u8003\u616e\u305b\u305a\u306bkW\u306e\u30c7\u30fc\u30bf\u306b\u4f9d\u5b58\u3059\u308b\u3068\u3001\u30e2\u30fc\u30bf\u30fc\u306e\u5834\u5408\u3001kVA\u306f15\u301c25%\u904e\u5c0f\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002\u5404\u8ca0\u8377\u3092\u6700\u521d\u306bkVA\u3067\u8868\u73fe\u3057\u3001\u305d\u306e\u5f8c\u5408\u8a08\u3092\u8a08\u7b97\u3057\u3066\u304f\u3060\u3055\u3044\u3002kW\u306e\u5024\u3092\u5358\u7d14\u306b\u5408\u8a08\u3057\u3066\u5272\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u7570\u306a\u308b\u529b\u7387\u3092\u6301\u3064\u8ca0\u8377\u306e\u7570\u306a\u308b\u6319\u52d5\u3092\u8003\u616e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u529b\u7387<\/th>\n<th>100 kW\u3042\u305f\u308a\u306ekVA<\/th>\n<th>\u30b5\u30a4\u30ba\u306b\u5bfe\u3059\u308b\u5f71\u97ff<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>00\uff08\u62b5\u6297\u6027\uff09<\/td>\n<td>100<\/td>\n<td>\u306a\u3057<\/td>\n<\/tr>\n<tr>\n<td>95\uff08VFD \/ LED\uff09<\/td>\n<td>105<\/td>\n<td>+5%<\/td>\n<\/tr>\n<tr>\n<td>0.90<\/td>\n<td>111<\/td>\n<td>+11%<\/td>\n<\/tr>\n<tr>\n<td>85\uff08\u5178\u578b\u7684\u306a\u30e2\u30fc\u30bf\u30fc\uff09<\/td>\n<td>118<\/td>\n<td>+18%<\/td>\n<\/tr>\n<tr>\n<td>0.80<\/td>\n<td>125<\/td>\n<td>+25%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"worked-examples\">\u518d\u5229\u7528\u53ef\u80fd\u306a\u4f5c\u696d\u4f8b<\/h2>\n<p>\u4f8b1 \u2014 \u30e2\u30fc\u30bf\u30fc\u8ca0\u8377\u30020.87\u306e\u529b\u7387\u3067\u52d5\u4f5c\u3059\u308b45 kW\u306e\u30e2\u30fc\u30bf\u30fc\u304c3\u53f0\u30010.82\u306e\u529b\u7387\u3067\u8a2d\u7f6e\u3055\u308c\u305f30 kW\u306e\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u304c\u3042\u308a\u307e\u3059\uff01 3\u53f0\u306e\u30e2\u30fc\u30bf\u30fc\u306ekVA\u5b9a\u683c = 45 \u00f7 0.87 = 51.7 kVA\uff01\u3057\u305f\u304c\u3063\u3066\u30013\u53f0\u306e\u30e2\u30fc\u30bf\u30fc\u306e\u5408\u8a08kVA\u5b9a\u683c = 3 \u00d7 51.7 = 155.2 kVA\uff01\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u306e\u5834\u5408\u3001\u305d\u306ekVA = 30 \u00f7 0.82 = 36.6 kVA\uff01\u5408\u8a08\u904b\u8ee2kVA = 191.8 kVA\uff01\u4eca\u3001\u30c0\u30a4\u30d0\u30fc\u30b7\u30c6\u30a3\u3092\u9069\u7528\u3059\u308b\u3068 = 191.8 \u00d7 0.85 = 163 kVA\uff01\u3055\u3089\u306b\u6210\u9577\u306e\u305f\u3081\u306b15%\u3092\u8ffd\u52a0\u3059\u308b\u3068\uff08\u3064\u307e\u308a\u3001163 + (15%\u306e163) = 187.5 kVA\uff01\u63a8\u5968\u5b9a\u683c = 200 kVA\uff08\u3064\u307e\u308a\u3001\u62e1\u5f35\u306e\u78ba\u5b9f\u6027\u304c\u3042\u308b\u5834\u5408\u306f250 kVA\uff09\uff01<\/p>\n<p>\u4f8b2 \u2014 \u6e2c\u5b9a\u8ca0\u8377\u3002\u4e09\u76f8\u30d5\u30a3\u30fc\u30c0\u30fc\u3067260 A\u306e\u8ca0\u8377\u3092\u6e2c\u5b9a\u3057\u3001415 V\u3067\u52d5\u4f5c\u3057\u3001\u529b\u7387\u304c0.88\u306e\u5834\u5408\u3092\u8003\u3048\u307e\u3059\uff01\u3057\u305f\u304c\u3063\u3066\u3001kVA\u3092\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\uff1akVA = 1.732 \u00d7 415 \u00d7 260 \u00f7 1000 = 186.8\uff01kVA\u3092\u8a08\u7b97\u3057\u305f\u306e\u3067\u3001\u5b9f\u969b\u306e\u96fb\u529b\u3092\u7c21\u5358\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\uff1a\u5b9f\u969b\u306e\u96fb\u529b = 186.8 \u00d7 0.88 = 164.4 kW\uff01\u3057\u305f\u304c\u3063\u3066\u3001\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f186.8 kVA\u4ee5\u4e0a\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0115%\u306e\u30de\u30fc\u30b8\u30f3\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f215 kVA\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u696d\u754c\u6a19\u6e96\u306f250 kVA\u3067\u3059\uff01<\/p>\n<p>\u4f8b3 \u2014 \u7d44\u307f\u5408\u308f\u305b\u8ca0\u8377\u3002\u51b7\u8535\u5eab\u306e\u6d88\u8cbb\u96fb\u529b\u3092\u8abf\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc\u306e60 kVA\u3001\u7167\u660e\u306e20 kVA\u3001\u30aa\u30d5\u30a3\u30b9\u306e15 kVA\u3067\u5408\u8a0895 kVA\u3067\u3059\uff01\u30c0\u30a4\u30d0\u30fc\u30b7\u30c6\u30a3\u3092\u9069\u7528\u3059\u308b\u3068\u30010.85 \u00d7 95 = 80.8 kVA\u306b\u306a\u308a\u3001\u6210\u9577\u306e\u305f\u3081\u306b20%\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f100 kVA\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u30b1\u30fc\u30b9\u3067\u540c\u30583\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u304c\u7e70\u308a\u8fd4\u3055\u308c\u305f\u3068\u8a00\u3048\u307e\u3059\uff1akVA\u306b\u5909\u63db\u3057\u3001\u30c0\u30a4\u30d0\u30fc\u30b7\u30c6\u30a3\u3092\u9069\u7528\u3057\u3001\u30de\u30fc\u30b8\u30f3\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002.<\/p>\n<h2 id=\"measurement\">\u30a2\u30f3\u30d7\u3068\u96fb\u5727\u3092\u6b63\u3057\u304f\u6e2c\u5b9a\u3059\u308b<\/h2>\n<p>\u300c\u30b4\u30df\u304c\u5165\u308c\u3070\u30b4\u30df\u304c\u51fa\u308b\u300d\u3068\u3044\u3046\u539f\u5247\u306f\u5f37\u8abf\u3055\u308c\u308b\u3079\u304d\u3067\u3059\u3002\u7cbe\u5ea6\u306f\u30c7\u30fc\u30bf\u306e\u8cea\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u305d\u306e\u4ee3\u308f\u308a\u306b\u3001\u30e2\u30fc\u30bf\u30fc\u3084\u96fb\u5b50\u8ca0\u8377\u304c\u4fe1\u53f7\u306e\u5f62\u72b6\u3092\u6b6a\u3081\u308b\u305f\u3081\u3001\u5b89\u4fa1\u306a\u5e73\u5747\u5fdc\u7b54\u578b\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u771f\u306eRMS\u30af\u30e9\u30f3\u30d7\u30e1\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6e2c\u5b9a\u306f\u5404\u76f8\u3067\u306f\u306a\u304f\u3001\u4e3b\u30d6\u30ec\u30fc\u30ab\u30fc\u307e\u305f\u306f\u30b9\u30a4\u30c3\u30c1\u30dc\u30fc\u30c9\u3067\u884c\u3044\uff08\u7406\u60f3\u7684\u306b\u306f\u904b\u8ee2\u306e\u30d5\u30eb\u30b5\u30a4\u30af\u30eb\u306e\u5c11\u306a\u304f\u3068\u30821\u56de\u3001\u3067\u304d\u308c\u3070\u5408\u8a08\u30671\u9031\u9593\uff09\u3001\u6b63\u78ba\u306a\u6e2c\u5b9a\u3092\u5f97\u308b\u305f\u3081\u306b\u884c\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u76f8\u306e\u6700\u5927\u30e9\u30a4\u30f3\u96fb\u6d41\u3001\u76f8\u9593\u96fb\u5727\u3001\u304a\u3088\u3073\u3053\u306e\u30c7\u30fc\u30bf\u304c\u30e1\u30fc\u30bf\u30fc\u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u308b\u5834\u5408\u306e\u307f\u529b\u7387\u3092\u8a18\u9332\u3057\u307e\u3059\u3002.<\/p>\n<p>\u91cd\u8981\u306a\u4e8b\u5b9f\uff1a\u30c7\u30d0\u30a4\u30b9\u306e\u540d\u524d\u30d7\u30ec\u30fc\u30c8\u5074\u3067\u306f\u306a\u304f\u3001\u8ca0\u8377\u5074\u3067\u6e2c\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u540d\u524d\u30d7\u30ec\u30fc\u30c8\u306e\u5024\u306f\u6700\u5927\u5024\u3092\u53cd\u6620\u3057\u3066\u304a\u308a\uff08\u5b9f\u969b\u306b\u306f\u307b\u3068\u3093\u3069\u95a2\u9023\u6027\u304c\u3042\u308a\u307e\u305b\u3093\uff09\u3001\u5b9f\u969b\u306e\u30b5\u30fc\u30d3\u30b9\u96fb\u5727\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u3002\u300c400 V\u300d\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u51fa\u529b\u3067\u5b9f\u969b\u306b\u306f420-430 V\u3067\u52d5\u4f5c\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h2 id=\"standard-ratings\">\u3042\u306a\u305f\u306ekVA\u6570\u5024\u3092\u30c8\u30e9\u30f3\u30b9\u306e\u5b9a\u683c\u306b\u5909\u63db\u3059\u308b<\/h2>\n<p>\u8a2d\u8a08\u306b\u5fc5\u8981\u306akVA\u306e\u5024\u304c\u6c7a\u5b9a\u3055\u308c\u305f\u3089\u3001\u6b21\u306e\u6a19\u6e96\u5bb9\u91cf\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002IEC\u306e\u76ee\u7684\u3067\u306f\u3001\u3053\u308c\u306b\u306f25\u300150\u3001100\u3001160\u3001250\u3001315\u3001400\u3001500\u3001630\u3001800\u30011000\u30011250\u30011600\u30012000\u3001\u304a\u3088\u30732500 kVA\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u5317\u7c73\u3067\u306f\u300125\u300137.5\u300150\u300175\u3001100\u3001150\u3001167\u3001250\u3001333\u3001\u304a\u3088\u3073500 kVA\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u9069\u5207\u306a\u6b21\u306e\u5b9a\u683c\u3092\u6c7a\u5b9a\u3059\u308b\u306b\u306f\u30012\u3064\u306e\u30eb\u30fc\u30eb\u306b\u5f93\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u5024\u306f\u5e38\u306b\u5207\u308a\u4e0a\u3052\u308b\u3079\u304d\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u8a08\u7b97\u3055\u308c\u305f\u8ca0\u8377\u304c\u7d04249 kVA\u3067\u3042\u308b\u5834\u5408\u3001200 kVA\u3067\u306f\u306a\u304f250 kVA\u306e\u767a\u96fb\u6a5f\u3092\u4f7f\u7528\u3059\u308b\u3079\u304d\u3067\u3059\u3002.<\/li>\n<li>\u6a5f\u5668\u306e\u59cb\u52d5\u8ca0\u8377\u3092\u9069\u5207\u306b\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u5185\u3067\u6700\u5927\u306e\u30e2\u30fc\u30bf\u30fc\u304c\u7dcf\u5b9a\u683c\u306e\u7d0425%\u3092\u8d85\u3048\u308b\u5834\u5408\u3001\u59cb\u52d5\u8ca0\u8377\u3092\u898b\u3064\u3051\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001100 kW\u306eDOL\u30e2\u30fc\u30bf\u30fc\u306f\u3001\u6700\u521d\u306b\u59cb\u52d5\u3059\u308b\u3068\u304d\u306b600 kVA\u4ee5\u4e0a\u3092\u5fc5\u8981\u3068\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<\/ul>\n<table>\n<thead>\n<tr>\n<th>\u6e2c\u5b9a\/\u8a08\u7b97\u3055\u308c\u305fkVA<\/th>\n<th>15%\u306e\u30de\u30fc\u30b8\u30f3\u3092\u8ffd\u52a0<\/th>\n<th>IEC\u6a19\u6e96\u5b9a\u683c<\/th>\n<th>NA\u6a19\u6e96\u5b9a\u683c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>20<\/td>\n<td>23<\/td>\n<td>25<\/td>\n<td>25<\/td>\n<\/tr>\n<tr>\n<td>85<\/td>\n<td>98<\/td>\n<td>100<\/td>\n<td>100<\/td>\n<\/tr>\n<tr>\n<td>140<\/td>\n<td>161<\/td>\n<td>160<\/td>\n<td>167<\/td>\n<\/tr>\n<tr>\n<td>210<\/td>\n<td>242<\/td>\n<td>250<\/td>\n<td>250<\/td>\n<\/tr>\n<tr>\n<td>270<\/td>\n<td>311<\/td>\n<td>315<\/td>\n<td>333<\/td>\n<\/tr>\n<tr>\n<td>430<\/td>\n<td>495<\/td>\n<td>500<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td>550<\/td>\n<td>633<\/td>\n<td>630<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"common-errors\">\u4e00\u822c\u7684\u306akVA\u8a08\u7b97\u30a8\u30e9\u30fc<\/h2>\n<ul>\n<li>\u5358\u76f8\u65b9\u7a0b\u5f0f\u3092\u9069\u7528\u3057\u3066\u4e09\u76f8\u8ca0\u8377\u3092\u8a08\u7b97\u3059\u308b\u3068\u3001\u221a3\u3092\u7121\u8996\u3059\u308b\u305f\u3081\u306b42%\u306e\u904e\u5c0f\u8a55\u4fa1\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002.<\/li>\n<li>kW\u306b\u57fa\u3065\u3044\u3066\u5024\u3092\u8a08\u7b97\u3057\u3001\u529b\u7387\u3092\u7701\u7565\u3059\u308b\u65b9\u6cd5\u306f\u3001\u30e2\u30fc\u30bf\u30fc\u8ca0\u8377\u306b\u5bfe\u3057\u306615%\u201325%\u306e\u904e\u5c0f\u8a55\u4fa1\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002.<\/li>\n<li>\u540d\u524d\u30d7\u30ec\u30fc\u30c8\u306e\u5b9a\u683c\u7279\u6027\u306b\u57fa\u3065\u3044\u3066\u8a08\u7b97\u3059\u308b\u3068\u3001\u5b9f\u969b\u306e\u6d88\u8cbb\u304c\u30c7\u30fc\u30bf\u3088\u308a\u3082\u5e38\u306b\u4f4e\u3044\u305f\u3081\u3001\u904e\u5927\u8a55\u4fa1\u306b\u306a\u308a\u307e\u3059\u3002\u4ee3\u308f\u308a\u306b\u6b63\u78ba\u306a\u6c7a\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u591a\u69d8\u6027\u4fc2\u6570\u3092\u8003\u616e\u3057\u306a\u3044\u5834\u5408\u3001\u8a08\u7b97\u306f20%\u201340%\u306e\u904e\u5927\u8a2d\u8a08\u306b\u3064\u306a\u304c\u308a\u3001\u8ffd\u52a0\u306e\u7121\u8ca0\u8377\u640d\u5931\u304c\u6c38\u9060\u306b\u7d9a\u304f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002.<\/li>\n<li>\u53ef\u80fd\u306a\u8ca0\u8377\u306e\u6210\u9577\u3092\u8003\u616e\u3057\u306a\u3044\u5834\u5408\u3001\u8a08\u7b97\u306f\u6b21\u5e74\u5ea6\u306e\u8ca0\u8377\u306b\u5bfe\u3057\u306610%\u201320%\u306e\u904e\u5c0f\u8a55\u4fa1\u306b\u306a\u308a\u307e\u3059\u3002.<\/li>\n<li>\u4e09\u76f8\u8ca0\u8377\u3092\u8a08\u7b97\u3059\u308b\u969b\u306b\u7dda\u9593\u96fb\u5727\u3092\u9069\u7528\u3059\u308b\u5834\u5408\u3001\u7dda\u9593\u5024\u3092\u4f7f\u7528\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002.<\/li>\n<li>\u9ad8\u8abf\u6ce2\u96fb\u6d41\u3092\u7121\u8996\u3059\u308b\u3068\u3001VFD\u8ca0\u8377\u306e\u9069\u7528\u306b\u3088\u308a\u71b1\u8ca0\u8377\u304c5%\u201315%\u5897\u52a0\u3057\u307e\u3059\u3002.<\/li>\n<li>\u30ea\u30b9\u30c8\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30a8\u30e9\u30fc\u306f\u3001\u5f8c\u306e\u5f71\u97ff\u306b\u6c17\u3065\u304f\u306e\u304c\u9ad8\u4fa1\u3067\u3042\u308b\u4e00\u65b9\u3067\u3001\u7c21\u5358\u306b\u56de\u907f\u3067\u304d\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10562\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/kVA-Reference-Table-by-Load-Type.webp\" alt=\"\u8ca0\u8377\u30bf\u30a4\u30d7\u5225\u306ekVA\u53c2\u7167\u8868\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2 id=\"kva-table\">\u8ca0\u8377\u30bf\u30a4\u30d7\u5225\u306ekVA\u53c2\u7167\u8868<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u8ca0\u8377\u30bf\u30a4\u30d7<\/th>\n<th>\u5178\u578b\u7684\u306aPF<\/th>\n<th>100 kW\u3042\u305f\u308a\u306ekVA<\/th>\n<th>\u30b5\u30a4\u30ba\u8a2d\u5b9a\u306e\u6ce8\u610f\u4e8b\u9805<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8a98\u5c0e\u30e2\u30fc\u30bf\u30fc<\/td>\n<td>0.80\u20130.88<\/td>\n<td>114\u2013125<\/td>\n<td>\u59cb\u52d5\u7a81\u5165\u96fb\u6d41\u306b\u6ce8\u610f<\/td>\n<\/tr>\n<tr>\n<td>VFD \u99c6\u52d5\u30e2\u30fc\u30bf\u30fc<\/td>\n<td>95\u5165\u529b<\/td>\n<td>105<\/td>\n<td>\u4f4e\u3044\u59cb\u52d5\u9700\u8981\u3001\u9ad8\u8abf\u6ce2\u3092\u78ba\u8a8d<\/td>\n<\/tr>\n<tr>\n<td>\u30b3\u30f3\u30d7\u30ec\u30c3\u30b5\u30fc \/ \u30c1\u30e9\u30fc<\/td>\n<td>0.82\u20130.90<\/td>\n<td>111\u2013122<\/td>\n<td>\u30b5\u30a4\u30af\u30eb\u8ca0\u8377\u3001\u9806\u6b21\u59cb\u52d5<\/td>\n<\/tr>\n<tr>\n<td>\u62b5\u6297\u52a0\u71b1<\/td>\n<td>1.00<\/td>\n<td>100<\/td>\n<td>PF\u88dc\u6b63\u306f\u4e0d\u8981<\/td>\n<\/tr>\n<tr>\n<td>\u7167\u660e\uff08LED\uff09<\/td>\n<td>0.95\u20130.99<\/td>\n<td>101\u2013105<\/td>\n<td>\u7121\u8996\u3067\u304d\u308b\u5f71\u97ff<\/td>\n<\/tr>\n<tr>\n<td>\u6eb6\u63a5<\/td>\n<td>0.45\u20130.70<\/td>\n<td>143\u2013222<\/td>\n<td>\u4f4e\u3044\u591a\u69d8\u6027\u3001\u9ad8\u3044kVA\u3042\u305f\u308a\u306ekW<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3042\u306a\u305f\u306e\u8a08\u7b97\u304c\u6b63\u78ba\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8868\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\u3042\u306a\u305f\u306e\u65bd\u8a2d\u304c\u4e3b\u306b\u30e2\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u7dcfkVA\u306f\u7dcfkW\u306e115-125%\u306e\u7bc4\u56f2\u5185\u3067\u3042\u308b\u3079\u304d\u3067\u3059\u3002\u7d50\u679c\u304c\u7d04100%\u3067\u3042\u308b\u5834\u5408\u3001\u96fb\u529b\u56e0\u5b50\u306e\u8981\u7d20\u3092\u898b\u9003\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002.<\/p>\n<h2 id=\"brands-prices\">\u4e09\u76f8\u30e6\u30cb\u30c3\u30c8\u306e\u30d6\u30e9\u30f3\u30c9\u3068\u4fa1\u683c<\/h2>\n<p>kVA\u304c\u8a08\u7b97\u3055\u308c\u305f\u3089\u3001\u5546\u696d\u7684\u306a\u30b9\u30c6\u30c3\u30d7\u306f\u30bb\u30af\u30bf\u30fc\u5168\u4f53\u3067\u540c\u3058\u3067\u3059\uff1a\u985e\u4f3c\u306e\u4ed5\u69d8\u3067\u898b\u7a4d\u3082\u308a\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u4e16\u754c\u4e2d\u306e\u4f01\u696d\u306f\u30b5\u30dd\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u4fa1\u683c\u3092\u8a2d\u5b9a\u3057\u3001IEC\u8a8d\u8a3c\u3092\u53d7\u3051\u305f\u4e2d\u56fd\u306e\u88fd\u9020\u696d\u8005\u306f\u5546\u54c1\u306b\u4fa1\u683c\u3092\u4ed8\u3051\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d6\u30e9\u30f3\u30c9<\/th>\n<th>\u4f4d\u7f6e<\/th>\n<th>250 kVA<\/th>\n<th>500 kVA<\/th>\n<th>1,000 kVA<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ABB<\/td>\n<td>\u30b0\u30ed\u30fc\u30d0\u30eb\u30b5\u30fc\u30d3\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/td>\n<td>$12,000\u2013$20,000<\/td>\n<td>$18,000\u2013$30,000<\/td>\n<td>$25,000\u2013$42,000<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30fc\u30e1\u30f3\u30b9<\/td>\n<td>\u52b9\u7387\u3068\u76e3\u8996<\/td>\n<td>$12,000\u2013$22,000<\/td>\n<td>$18,000\u2013$32,000<\/td>\n<td>$25,000\u2013$45,000<\/td>\n<\/tr>\n<tr>\n<td>\u30b7\u30e5\u30ca\u30a4\u30c0\u30fc\u30a8\u30ec\u30af\u30c8\u30ea\u30c3\u30af<\/td>\n<td>\u4e7e\u5f0f\u3001LV\u7d71\u5408<\/td>\n<td>$11,000\u2013$18,000<\/td>\n<td>$15,000\u2013$28,000<\/td>\n<td>$22,000\u2013$38,000<\/td>\n<\/tr>\n<tr>\n<td>\u65e5\u7acb\u30a8\u30ca\u30b8\u30fc<\/td>\n<td>\u30b0\u30ea\u30c3\u30c9\u3068\u7523\u696d<\/td>\n<td>$12,000\u2013$21,000<\/td>\n<td>$17,000\u2013$30,000<\/td>\n<td>$24,000\u2013$42,000<\/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>$14,000\u2013$26,000<\/td>\n<td>$20,000\u2013$36,000<\/td>\n<\/tr>\n<tr>\n<td>\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/td>\n<td>IEC 60076\u3001\u9285\u3001\u8a66\u9a13\u5831\u544a\u66f8<\/td>\n<td>$4,500\u2013$11,000<\/td>\n<td>$8,000\u2013$16,000<\/td>\n<td>$12,000\u2013$22,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0a\u8a18\u306e\u4fa1\u683c\u306fFOB\u4e2d\u56fd\u307e\u305f\u306f\u5de5\u5834\u6e21\u3057\u3067\u3042\u308a\u3001\u4ed5\u69d8\u3001\u30d6\u30e9\u30f3\u30c9\u3001\u5834\u6240\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u4e0a\u8a18\u306e\u56fd\u969b\u30d6\u30e9\u30f3\u30c9\u306f\u3001\u305d\u306e\u4fe1\u983c\u6027\u3068\u91cd\u8981\u306a\u8a2d\u7f6e\u306b\u5bfe\u3059\u308b\u9069\u5408\u6027\u3067\u3088\u304f\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u5de5\u696d\u30d7\u30e9\u30f3\u30c8\u3001\u91b8\u9020\u6240\u3001\u51b7\u8535\u65bd\u8a2d\u3001\u5546\u696d\u30d3\u30eb\u306a\u3069\u306e\u307b\u3068\u3093\u3069\u306e\u4e09\u76f8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30b3\u30b9\u30c8\u5bfe\u52b9\u679c\u306e\u6bd4\u7387\u304c\u3053\u306e\u5206\u91ce\u3067\u306e\u5b9f\u7e3e\u306e\u3042\u308b\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u6709\u5229\u3067\u3059\u3002\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b\u306f\u3001IEC 60076\u898f\u683c\u306b\u6e96\u62e0\u3057\u305f\u30c8\u30e9\u30f3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u300110 kVA\u304b\u3089100 MVA\u306e\u5bb9\u91cf\u3092\u6301\u3061\u3001\u6a19\u6e96\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u9285\u5dfb\u7dda\u3092\u7279\u5fb4\u3068\u3057\u3001\u5404\u30e6\u30cb\u30c3\u30c8\u306b\u306f\u8a66\u9a13\u5831\u544a\u66f8\u304c\u4ed8\u5c5e\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u8a08\u7b97\u3055\u308c\u305fkVA\u306f\u9298\u677f\u306b\u793a\u3055\u308c\u305fkVA\u3067\u3059\u3002\u7d50\u679c\u306f\u5e38\u306b\u8a3c\u660e\u3055\u308c\u308b\u305f\u3081\u3001\u4fa1\u683c\u306b\u306f\u5f71\u97ff\u304c\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n<h2 id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>\u4e09\u76f8kVA\u306e\u516c\u5f0f\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>kVA\u3092\u8a08\u7b97\u3059\u308b\u516c\u5f0f\u306f\uff08\u221a3 \u00d7 \u30dc\u30eb\u30c8 \u00d7 \u30a2\u30f3\u30d7\uff09\u00f7 1000\u3067\u3059\u3002\u30dc\u30eb\u30c8\u306b\u306f\u7dda\u9593\u96fb\u5727\u3092\u3001\u30a2\u30f3\u30d7\u306b\u306f\u7dda\u96fb\u6d41\u3092\u4ee3\u5165\u3057\u307e\u3059\u3002\u4e0a\u8a18\u306e\u8a08\u7b97\u3067\u306f\u3001400 V\u306e\u7dda\u9593\u96fb\u5727\u3068300 A\u306e\u7dda\u96fb\u6d41\u304c\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\u306e\u8a08\u7b97\u306f\u30011.732 \u00d7 400 \u00d7 300 \u00f7 1000 = 207.8 kVA\u3067\u3059\u3002\u6e2c\u5b9a\u306b\u306f\u5e38\u306b\u7dda\u9593\u96fb\u5727\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044 \u2014 \u7dda\u9593\u4e2d\u6027\u96fb\u5727\u3092\u4f7f\u7528\u3059\u308b\u3068\u8aa4\u3063\u305f\u8a08\u7b97\u304c\u751f\u3058\u307e\u3059\u3002.<\/p>\n<h3>\u30c8\u30e9\u30f3\u30b9\u306ekW\u3092kVA\u306b\u5909\u63db\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h3>\n<p>kVA\u3092\u5f97\u308b\u306b\u306f\u3001kW\u3092\u529b\u7387\u3067\u5272\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1akVA = kW \u00f7 PF\u30020.85 PF\u3067\u52d5\u4f5c\u3059\u308b200 kW\u306e\u8ca0\u8377\u306f235 kVA\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002\u5909\u5727\u5668\u3092\u53d6\u5f97\u3059\u308b\u969b\u306b\u306f\u3001\u305d\u306e\u91d1\u984d\u306b\u5c11\u3057\u4f59\u88d5\u3092\u52a0\u3048\u307e\u3059 \u2014 \u7d0415-20% \u2014 \u305d\u3057\u3066\u6700\u5bc4\u308a\u306e\u6a19\u6e96\u5b9a\u683c\u306b\u4e38\u3081\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001235 kVA\u306f\u7d04270 kVA\u306b\u306a\u308a\u3001IEC\u898f\u683c\u306b\u5f93\u3063\u3066315 kVA\u307e\u305f\u306fNA\u898f\u5236\u306b\u5f93\u3063\u3066333 kVA\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002.<\/p>\n<h3>415 V\u4e09\u76f8\u3067300\u30a2\u30f3\u30da\u30a2\u306b\u5fc5\u8981\u306a\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u306f\u3069\u308c\u304f\u3089\u3044\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u6570\u5f0f\u3092\u9069\u7528\u3057\u307e\u3059\uff1a1.732 \u00d7 415 \u00d7 300 \u00f7 1000 = 215.6 kVA\u300215%\u306e\u4f59\u88d5\u3092\u52a0\u3048\u308b\u3068248 kVA\u306b\u306a\u308a\u3001250 kVA\u306e\u5909\u5727\u5668\u304c\u6700\u4f4e\u8981\u4ef6\u3068\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u304b\u306a\u308a\u306e\u6210\u9577\u3084\u5927\u304d\u306a\u30e2\u30fc\u30bf\u30fc\u59cb\u52d5\u8ca0\u8377\u304c\u3042\u308b\u5834\u5408\u306f315 kVA\u306e\u5909\u5727\u5668\u304c\u5fc5\u8981\u3067\u3059\u3002.<\/p>\n<h3>\u306a\u305c\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f\u79c1\u306e\u6e2c\u5b9a\u3057\u305fkW\u3088\u308a\u3082\u5927\u304d\u3044\u306e\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4e09\u3064\u306e\u8aac\u660e\u304c\u3042\u308a\u307e\u3059\uff1a\u529b\u7387\uff08\u30e2\u30fc\u30bf\u30fc\u8ca0\u8377\u306fkVA &gt; kW\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\uff09\u3001\u591a\u69d8\u6027\u3068\u4f59\u88d5\uff080.7\u20130.85\u306e\u591a\u69d8\u6027\u306810\u201320%\u306e\u6210\u9577\u304c\u7523\u696d\u6163\u884c\u306b\u542b\u307e\u308c\u307e\u3059\uff09\u3001\u304a\u3088\u3073\u59cb\u52d5\u904e\u6e21\u3002\u4f8b\u3048\u3070\u3001\u5de5\u5834\u306f0.85 PF\u3067150 kW\u306e\u8aad\u307f\u53d6\u308a\u3092\u5831\u544a\u3057\u300120 %\u306e\u4f59\u88d5\u3092\u6301\u3061\u3001\u5927\u304d\u306aDOL\u30e2\u30fc\u30bf\u30fc\u3092\u6301\u3063\u3066\u3044\u308b\u305f\u3081\u3001250 kVA\u306e\u30e6\u30cb\u30c3\u30c8\u304c\u5fc5\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u5909\u5727\u5668\u306ekVA\u3092\u5c02\u9580\u7684\u306b\u8a08\u7b97\u3059\u308b\u306e\u306b\u3069\u308c\u304f\u3089\u3044\u306e\u8cbb\u7528\u304c\u304b\u304b\u308a\u307e\u3059\u304b\uff1f<\/h3>\n<p>\u81ea\u5b85\u3067\u306f\u3001\u6642\u9593\u3068\u771f\u306eRMS\u30af\u30e9\u30f3\u30d7\u30e1\u30fc\u30bf\u30fc\uff08$50\u2013$200\uff09\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u3092\u8a18\u9332\u3059\u308b\u305f\u3081\u306e1\u9031\u9593\u306e\u8cbb\u7528\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u6b63\u5f0f\u306a\u8ca0\u8377\u8abf\u67fb\u306e\u305f\u3081\u306b\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8\u3092\u96c7\u3046\u3068\u3001$500\u304b\u3089$2,000\u306e\u9593\u306e\u8cbb\u7528\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u30eb\u30fc\u30c8\u3082\u3001\u6b63\u3057\u3044\u9078\u629e\u3092\u3059\u308c\u3070\u3001$8,000\u2013$40,000\u306e\u5909\u5727\u5668\u306e\u4fa1\u683c\u306b\u5bfe\u3057\u3066\u3059\u3050\u306b\u5143\u304c\u53d6\u308c\u307e\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 \u6a19\u6e96\u5b9a\u683c\u3001\u8a31\u5bb9\u5dee\u3001\u304a\u3088\u3073\u8a66\u9a13\u8981\u4ef6\u3002.<\/li>\n<li><a href=\"https:\/\/www.electrical4u.com\/transformer-kva-calculator\/\" rel=\"nofollow noopener\" target=\"_blank\">Electrical4U \u2014 \u5909\u5727\u5668kVA\u8a08\u7b97\u6a5f<\/a> \u2014 \u5358\u76f8\u304a\u3088\u3073\u4e09\u76f8kVA\u5909\u63db\u306e\u305f\u3081\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u3002.<\/li>\n<li><a href=\"https:\/\/www.fluke.com\/en-us\/learn\/blog\/power-quality\/true-rms-measurement\" rel=\"nofollow noopener\" target=\"_blank\">Fluke \u2014 \u771f\u306eRMS\u6e2c\u5b9a<\/a> \u2014 \u6b63\u78ba\u306a\u96fb\u6d41\u3068\u96fb\u5727\u306e\u8a18\u9332\u306e\u305f\u3081\u306b\u771f\u306eRMS\u30e1\u30fc\u30bf\u30fc\u304c\u91cd\u8981\u306a\u7406\u7531\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 \u5b9f\u7528\u7684\u306a\u8a2d\u7f6e\u306e\u305f\u3081\u306e\u30b5\u30a4\u30ba\u8a08\u7b97\u6a5f\u3068kVA\u30c6\u30fc\u30d6\u30eb\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:\/\/en.wikipedia.org\/wiki\/Apparent_power\" rel=\"nofollow noopener\" target=\"_blank\">Wikipedia \u2014 \u898b\u304b\u3051\u306e\u96fb\u529b<\/a> \u2014 kVA\u3001kW\u3001\u304a\u3088\u3073\u529b\u7387\u306e\u80cc\u5f8c\u306b\u3042\u308b\u7406\u8ad6\u3002.<\/li>\n<\/ul>\n<h2 id=\"conclusion\">\u7d50\u8ad6<\/h2>\n<p>\u4e09\u76f8\u96fb\u529b\u306ekVA\u5b9a\u683c\u3092\u6c7a\u5b9a\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u306f\u7c21\u5358\u3067\u3001kVA = (\u221a3 \u00d7 V \u00d7 A) \u00f7 1000\u306e\u5358\u7d14\u306a\u8a08\u7b97\u3067\u3059\u3002kW\u3082\u529b\u7387\u3092\u8003\u616e\u3057\u3066\u8a08\u7b97\u3055\u308c\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u95a2\u9023\u3059\u308b\u4f59\u88d5\u3068\u591a\u69d8\u6027\u4fc2\u6570\u306b\u5f93\u3063\u3066\u4fee\u6b63\u3055\u308c\u307e\u3059\u3002\u5b9f\u969b\u306e\u9055\u3044\u306f\u5909\u6570\u306e\u9069\u5207\u306a\u5165\u529b\u306b\u3088\u3063\u3066\u751f\u3058\u307e\u3059\u3002\u91b8\u9020\u6240\u306e\u7d4c\u9a13\u3067\u306f\u3001630 kVA\u306e\u96fb\u529b\u306b\u5bfe\u3057\u3066\u652f\u6255\u3063\u305f\u304c\u3001\u8ca0\u8377\u3092\u6b63\u3057\u304f\u6e2c\u5b9a\u3057\u8a08\u7b97\u3057\u3066\u3044\u308c\u3070500 kVA\u306e\u96fb\u529b\u306b\u5bfe\u3057\u3066\u306e\u307f\u652f\u6255\u3046\u5fc5\u8981\u304c\u3042\u3063\u305f\u3067\u3057\u3087\u3046\u3002.<\/p>\n<ul>\n<li>\u5e38\u306b\u4e09\u76f8\u306e\u6570\u5f0f\u3092\u4f7f\u7528\u3057\u3001\u5358\u76f8\u306e\u6570\u5f0f\u3060\u3051\u3092\u4f7f\u7528\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>\u7570\u306a\u308b\u8ca0\u8377\u30b0\u30eb\u30fc\u30d7\u306e\u305f\u3081\u306b\u5b9f\u969b\u306e\u529b\u7387\u3092\u4f7f\u7528\u3057\u3066kW\u3092kVA\u306b\u5909\u63db\u3057\u307e\u3059\u3002.<\/li>\n<li>7\u20130.85\u306e\u7bc4\u56f2\u306e\u591a\u69d8\u6027\u4fc2\u6570\u306815\u201320%\u306e\u7bc4\u56f2\u306e\u6210\u9577\u4fc2\u6570\u3092\u8003\u616e\u3057\u3001\u305d\u306e\u5f8c\u3001\u6570\u5024\u3092\u6700\u5bc4\u308a\u306e\u6a19\u6e96\u5024\u306b\u4e38\u3081\u307e\u3059\u3002.<\/li>\n<li>\u4f9b\u7d66\u8005\u306e\u5de5\u5834\u8a66\u9a13\u5831\u544a\u66f8\u3092\u78ba\u8a8d\u3057\u3066\u3001\u8a08\u7b97\u3055\u308c\u305f\u5024\u304c\u7d0d\u5165\u3055\u308c\u305f\u5b9a\u683c\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ul>\n<p>\u8a08\u7b97\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001, <a href=\"https:\/\/subian-electric.com\/ja\/\">\u6c5f\u8607\u7701\u8607\u8fba\u96fb\u529b<\/a> IEC 60076\u8a8d\u8a3c\u306e\u4e09\u76f8\u5909\u5727\u5668\u309210 kVA\u304b\u3089100 MVA\u307e\u3067\u5f15\u7528\u3067\u304d\u3001\u53d7\u3051\u53d6\u3063\u305f\u5b9f\u969b\u306e\u30e6\u30cb\u30c3\u30c8\u306ekVA\u3068\u640d\u5931\u3092\u78ba\u8a8d\u3059\u308b\u5de5\u5834\u8a66\u9a13\u5831\u544a\u66f8\u304c\u4ed8\u3044\u3066\u3044\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>A Zambian brewing company procured a transformer rated at 630 kVA for its new bottling facility after receiving information from an electrician stating that 630 is the standard number for that type of facility. Half a year afterward, it was discovered that the unit was running very hot every day, the voltage was dropping when the compressor bank was activated, and the utility company threatened the brewery with a demand penalty. In reality, the real demand figure measured properly was 380 kVA with a peak of 520 kVA \u2013 a 500 kVA unit would have been ideal in this case. The core mistake that the company makes is that it [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":10560,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-10559","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\/10559","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=10559"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10559\/revisions"}],"predecessor-version":[{"id":11096,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/10559\/revisions\/11096"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/10560"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=10559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=10559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=10559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}