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style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-28\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-To-Choose-The-Right-Combined-Transformer-For-Your-Needs.webp\" alt=\"How To Choose The Right Combined Transformer For Your Needs\" width=\"1448\" height=\"1086\" 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<a href=\"https:\/\/subian-electric.com\/ja\/\">\u30b9\u30d3\u30a2\u30f3\u96fb\u6c17<\/a>, \u3001\u3053\u308c\u306b\u306f\u3001\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u3001\u63a5\u5730\u30c8\u30e9\u30f3\u30b9\u3001\u914d\u96fb\u30c8\u30e9\u30f3\u30b9\u3001\u304a\u3088\u3073\u7279\u6b8a\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u304c\u542b\u307e\u308c\u307e\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/How-to-Specify-the-Voltage-the-kVA-and-the-Grounding-Requirements-for-a-Combined-Transformer.webp\" alt=\"\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u306e\u96fb\u5727\u3001kVA\u3001\u304a\u3088\u3073\u63a5\u5730\u8981\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u306e\u96fb\u5727\u3001kVA\u3001\u304a\u3088\u3073\u63a5\u5730\u8981\u4ef6\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f <strong>\u6b63\u3057\u304f\u884c\u3046\u305f\u3081\u306b\u306f\u3001\u30d0\u30a4\u30e4\u30fc\u304c\u30c8\u30e9\u30f3\u30b9\u304c\u5b9f\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3059\u3079\u3066\u306e\u96fb\u6c17\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u3001\u5404\u6a5f\u80fd\u306e\u305f\u3081\u306b\u7279\u5b9a\u306e\u5024\uff08\u96fb\u5727\u3001kVA\u5b9a\u683c\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u63a5\u5730\u65b9\u6cd5\u3001\u6e29\u5ea6\u4e0a\u6607\u3001\u304a\u3088\u3073\u9069\u7528\u3055\u308c\u308b\u6a19\u6e96\uff09\u3092\u30e1\u30fc\u30ab\u30fc\u306b\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ed5\u69d8\u306b\u542b\u3081\u308b\u3079\u304d\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u69cb\u6210\u3067\u3042\u308b\u88dc\u52a9\u96fb\u6e90\u4e8c\u6b21\u3092\u6301\u3064\u30ef\u30a4\u30c7\u30eb\u30bf\u63a5\u5730\u30c8\u30e9\u30f3\u30b9\u306e\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u8981\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/strong> \u6b63\u78ba\u306b\u884c\u3046\u306b\u306f\u3001\u30d0\u30a4\u30e4\u30fc\u304c\u5909\u5727\u5668\u304c\u5b9f\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3059\u3079\u3066\u306e\u96fb\u6c17\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u3001\u5404\u6a5f\u80fd\u306e\u305f\u3081\u306e\u7279\u5b9a\u306e\u5024\u2014\u96fb\u5727\u3001kVA\u5b9a\u683c\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u63a5\u5730\u65b9\u6cd5\u3001\u6e29\u5ea6\u4e0a\u6607\u3001\u304a\u3088\u3073\u9069\u7528\u3055\u308c\u308b\u6a19\u6e96\u2014\u3092\u30e1\u30fc\u30ab\u30fc\u306b\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ed5\u69d8\u306b\u542b\u3081\u308b\u3079\u304d\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u8907\u5408\u5909\u5727\u5668\u69cb\u6210\u3067\u3042\u308b\u3001\u88dc\u52a9\u96fb\u529b\u4e8c\u6b21\u5074\u3092\u6301\u3064\u30ef\u30a4\u30c7\u30eb\u30bf\u63a5\u5730\u5909\u5727\u5668\u306e\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>\u305d\u308c\u304c\u5b9a\u7fa9\u3059\u308b\u3082\u306e<\/th>\n<th>\u305d\u308c\u3092\u6307\u5b9a\u3059\u308b\u65b9\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e3b\u7cfb\u7d71\u96fb\u5727<\/td>\n<td>\u5909\u5727\u5668\u306e\u4e00\u6b21\u5dfb\u7dda\u304c\u63a5\u7d9a\u3055\u308c\u308b\u7cfb\u7d71\u306e\u30e9\u30a4\u30f3\u9593\u96fb\u5727\u3002\u3053\u306e\u5024\u306f\u3001\u5909\u5727\u5668\u306e\u96fb\u5727\u30af\u30e9\u30b9\u3001\u305d\u306eBIL\u5b9a\u683c\u3001\u304a\u3088\u3073\u4e00\u6b21\u5dfb\u7dda\u3068\u30d6\u30c3\u30b7\u30f3\u30b0\u306e\u7d76\u7e01\u30ec\u30d9\u30eb\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/td>\n<td>\u540d\u76ee\u7cfb\u7d71\u96fb\u5727\u3068\u6700\u5927\u7cfb\u7d71\u96fb\u5727\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u30024,160\u30dc\u30eb\u30c8\u306e\u7cfb\u7d71\u306e\u5834\u5408\u3001\u300c\u540d\u76ee4,160 V\u3001\u6700\u59274,800 V\u300d\u3068\u6307\u5b9a\u3057\u307e\u3059\u3002BIL\u306f\u3001\u7cfb\u7d71\u306e\u4e88\u60f3\u3055\u308c\u308b\u96f7\u304a\u3088\u3073\u5207\u66ff\u30b5\u30fc\u30b8\u74b0\u5883\u306b\u57fa\u3065\u3044\u3066\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u2014\u901a\u5e38\u30014,160\u30dc\u30eb\u30c8\u7cfb\u7d71\u306e\u5834\u5408\u306f60 kV BIL\u300113,800\u30dc\u30eb\u30c8\u7cfb\u7d71\u306e\u5834\u5408\u306f95 kV BIL\u3067\u3059\u3002.<\/td>\n<\/tr>\n<tr>\n<td>\u63a5\u5730kVA\u304a\u3088\u3073\u4e2d\u6027\u96fb\u6d41<\/td>\n<td>\u63a5\u5730\uff08\u30ef\u30a4\uff09\u5dfb\u7dda\u306e\u71b1\u5bb9\u91cf\u3002\u3053\u308c\u306f\u88dc\u52a9\u96fb\u529bkVA\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u63a5\u5730kVA\u5b9a\u683c\u306f\u3001\u5909\u5727\u5668\u304c\u3069\u308c\u3060\u3051\u306e\u63a5\u5730\u6545\u969c\u96fb\u6d41\u3092\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3001\u307e\u305f\u305d\u306e\u6301\u7d9a\u6642\u9593\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/td>\n<td>\u9023\u7d9a\u4e2d\u6027\u96fb\u6d41\uff08\u901a\u5e38\u306e\u4e0d\u5e73\u8861\u6761\u4ef6\u4e0b\u3067\u4e2d\u6027\u304c\u9023\u7d9a\u3057\u3066\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u308b\u96fb\u6d41\u2014\u901a\u5e38\u306f\u5c0f\u3055\u306a\u5024\u3001\u7cfb\u7d71\u306e\u5b9a\u683c\u8ca0\u8377\u96fb\u6d41\u306e5\u201310%\uff09\u3068\u77ed\u6642\u9593\u4e2d\u6027\u96fb\u6d41\uff08\u63a5\u5730\u6545\u969c\u306e\u9593\u306b\u4e2d\u6027\u304c\u904b\u3076\u3053\u3068\u304c\u3067\u304d\u308b\u96fb\u6d41\u2014\u901a\u5e38\u306f10\u79d2\u300130\u79d2\u3001\u307e\u305f\u306f1\u5206\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\uff1a\u300c\u9023\u7d9a\u4e2d\u6027\u96fb\u6d41\uff1a10 A\u3002\u77ed\u6642\u9593\u4e2d\u6027\u96fb\u6d41\uff1a10\u79d2\u9593200 A\u3002\u300d\u201c<\/td>\n<\/tr>\n<tr>\n<td>\u88dc\u52a9\u96fb\u529bkVA\u304a\u3088\u3073\u96fb\u5727<\/td>\n<td>\u30c7\u30eb\u30bf\u4e8c\u6b21\u5dfb\u7dda\u304c\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u30b5\u30fc\u30d3\u30b9\u8ca0\u8377\u306b\u4f9b\u7d66\u3059\u308b\u96fb\u529b\u3002\u3053\u308c\u306f\u6a19\u6e96\u7684\u306a\u4e09\u76f8\u4e09\u7dda\u51fa\u529b\u3067\u3059\u3002.<\/td>\n<td>kVA\u5b9a\u683c\u3068\u4e8c\u6b21\u96fb\u5727\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\u3048\u3070\uff1a\u300c\u88dc\u52a9\u96fb\u529b\uff1a150 kVA\u3001480 V\u3001\u4e09\u76f8\u3001\u4e09\u7dda\u3002\u300dkVA\u5b9a\u683c\u306f\u3001\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u30b5\u30fc\u30d3\u30b9\u8ca0\u8377\u306e\u8ca0\u8377\u8a08\u7b97\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3057\u3001\u5c06\u6765\u306e\u6210\u9577\u306e\u305f\u3081\u306e\u4f59\u88d5\u3092\u6301\u305f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9<\/td>\n<td>\u5909\u5727\u5668\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u3001\u8ca0\u8377\u6642\u306e\u96fb\u5727\u964d\u4e0b\u3068\u63a5\u5730\u6545\u969c\u96fb\u6d41\u306e\u5927\u304d\u3055\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u304c\u4f4e\u3044\u307b\u3069\u3001\u63a5\u5730\u6545\u969c\u96fb\u6d41\u304c\u9ad8\u304f\u306a\u308a\u3001\u96fb\u5727\u8abf\u6574\u304c\u826f\u597d\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4e0b\u6d41\u6a5f\u5668\u306b\u5bfe\u3059\u308b\u6545\u969c\u96fb\u6d41\u306e\u8ca0\u62c5\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002.<\/td>\n<td>\u63a5\u5730kVA\u30d9\u30fc\u30b9\u306e\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u3068\u3057\u3066\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u62b5\u6297\u63a5\u5730\u7cfb\u7d71\u306e\u5834\u5408\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u901a\u5e384\u20136%\u3067\u3059\u3002\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u306f\u63a5\u5730\u62b5\u6297\u5668\u304a\u3088\u3073\u4fdd\u8b77\u30ea\u30ec\u30fc\u65b9\u5f0f\u3068\u8abf\u6574\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u7cfb\u7d71\u306b\u8907\u6570\u306e\u96fb\u6e90\u307e\u305f\u306f\u4e26\u5217\u5909\u5727\u5668\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u96fb\u6c17\u6280\u8853\u8005\u306b\u76f8\u8ac7\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n<tr>\n<td>\u63a5\u5730\u65b9\u6cd5<\/td>\n<td>\u30ef\u30a4\u5dfb\u7dda\u306e\u4e2d\u6027\u70b9\u304c\u63a5\u5730\u306b\u3069\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3055\u308c\u308b\u304b\u3002\u63a5\u5730\u65b9\u6cd5\u306f\u3001\u5730\u7d61\u96fb\u6d41\u306e\u5927\u304d\u3055\u3068\u4f7f\u7528\u3055\u308c\u308b\u4fdd\u8b77\u30ea\u30ec\u30fc\u306e\u7a2e\u985e\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/td>\n<td>\u63a5\u5730\u65b9\u6cd5\u3068\u63a5\u5730\u62b5\u6297\u5668\u307e\u305f\u306f\u30ea\u30a2\u30af\u30bf\u306e\u5024\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\u3048\u3070\uff1a\u300c\u62b5\u6297\u63a5\u5730\u300120\u30aa\u30fc\u30e0\u306e\u63a5\u5730\u62b5\u6297\u5668\u30014,160 V\u3067\u5730\u7d61\u96fb\u6d41\u3092200 A\u306b\u5236\u9650\u3002\u300d\u63a5\u5730\u62b5\u6297\u5668\u306f\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3059\u304c\u3001\u8907\u5408\u5909\u5727\u5668\u306f\u305d\u308c\u3068\u9023\u643a\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002.<\/td>\n<\/tr>\n<tr>\n<td>\u9069\u7528\u57fa\u6e96<\/td>\n<td>\u5909\u5727\u5668\u304c\u8a2d\u8a08\u3055\u308c\u3001\u8a66\u9a13\u3055\u308c\u308b\u3079\u304d\u57fa\u6e96\u3002\u3053\u306e\u57fa\u6e96\u306f\u3001\u8a66\u9a13\u624b\u9806\u3001\u53d7\u5165\u57fa\u6e96\u3001\u304a\u3088\u3073\u88fd\u9020\u8005\u304c\u63d0\u4f9b\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u6587\u66f8\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002.<\/td>\n<td>\u4e7e\u5f0f\u5909\u5727\u5668\u306b\u306fIEEE C57.12.01\u3001\u6cb9\u6d78\u5909\u5727\u5668\u306b\u306fIEEE C57.12.00\u3001\u56fd\u969b\u7684\u306a\u7528\u9014\u306b\u306fIEC 60076\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5909\u5727\u5668\u304c\u7279\u5b9a\u306e\u56fd\u306b\u8a2d\u7f6e\u3055\u308c\u308b\u5834\u5408\u306f\u3001\u9069\u7528\u3055\u308c\u308b\u56fd\u5bb6\u57fa\u6e96\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\u3048\u3070\u3001\u30ab\u30ca\u30c0\u3067\u306fCSA C9\u3001\u30aa\u30fc\u30b9\u30c8\u30e9\u30ea\u30a2\u3067\u306fAS 60076\u3067\u3059\u3002.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u8907\u5408\u5909\u5727\u5668\u306e\u305f\u3081\u306e80%\u30eb\u30fc\u30eb\u3068\u305d\u306e\u4ed6\u306e\u8ca0\u8377\u8003\u616e\u4e8b\u9805<\/h2>\n<p>\u5909\u5727\u5668\u306b\u95a2\u3059\u308b80%\u30eb\u30fc\u30eb\u306f\u3001\u5909\u5727\u5668\u306f\u305d\u306eKVA\u5b9a\u683c\u306e80%\u3092\u8d85\u3048\u3066\u9023\u7d9a\u904b\u8ee2\u3057\u3066\u306f\u306a\u3089\u306a\u3044\u3068\u8ff0\u3079\u3066\u304a\u308a\u3001\u3053\u308c\u306f\u901a\u5e38\u306e\u5909\u5727\u5668\u3068\u540c\u69d8\u306b\u8907\u5408\u5909\u5727\u5668\u306b\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u304c\u3001\u5909\u5727\u5668\u306e\u5404\u500b\u5225\u6a5f\u80fd\u3054\u3068\u306b\u5225\u3005\u306b\u9069\u7528\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u63a5\u5730\u5dfb\u7dda\u306f\u3001\u6545\u969c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u904b\u3076\u3053\u3068\u306b\u306a\u308b\u9023\u7d9a\u7684\u304a\u3088\u3073\u77ed\u671f\u7684\u306a\u5730\u7d61\u96fb\u6d41\u306b\u5bfe\u3057\u3066\u8a2d\u8a08\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u300180%\u30eb\u30fc\u30eb\u306f\u63a5\u5730\u5dfb\u7dda\u306b\u306f\u9023\u7d9a\u8ca0\u8377\u306b\u9069\u7528\u3055\u308c\u308b\u306e\u3068\u540c\u3058\u3088\u3046\u306b\u306f\u9069\u7528\u3055\u308c\u307e\u305b\u3093\u3002\u306a\u305c\u306a\u3089\u3001\u3053\u306e\u5dfb\u7dda\u306f\u7570\u5e38\u6761\u4ef6\u4e0b\u3067\u306e\u307f\u52d5\u4f5c\u3057\u3001\u77ed\u671f\u7684\u306a\u5bb9\u91cf\u304c\u9023\u7d9a\u5b9a\u683c\u3088\u308a\u3082\u91cd\u8981\u3060\u304b\u3089\u3067\u3059\u3002\u88dc\u52a9\u5dfb\u7dda\u306f\u3001\u4f9b\u7d66\u3059\u308b\u8ca0\u8377\u306e125%\u3067\u5b9a\u683c\u3055\u308c\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u300180%\u30eb\u30fc\u30eb\u306f\u3001\u5909\u5727\u5668\u304c\u305d\u306e\u88dc\u52a9KVA\u5b9a\u683c\u306e80%\u3092\u8d85\u3048\u3066\u904b\u8ee2\u3055\u308c\u3066\u306f\u306a\u3089\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001120 KVA\u306e\u8ca0\u8377\u306b\u5bfe\u3057\u3066150 KVA\u306e\u88dc\u52a9\u5dfb\u7dda\u3067\u52d5\u4f5c\u3059\u308b\u5909\u5727\u5668\u306f\u8a31\u5bb9\u3055\u308c\u307e\u3059\u304c\u3001150 KVA\u306e\u8ca0\u8377\u306b\u5bfe\u3057\u3066150 KVA\u306e\u88dc\u52a9\u5dfb\u7dda\u3067\u4f7f\u7528\u3055\u308c\u308b\u3068\u3001\u30b5\u30a4\u30ba\u304c\u4e0d\u8db3\u3057\u3001\u71b1\u3092\u6301\u3061\u3001\u7d76\u7e01\u304c\u65e9\u304f\u52a3\u5316\u3057\u3001\u904b\u8ee2\u5bff\u547d\u304c\u77ed\u304f\u306a\u308a\u307e\u3059\u3002IEEE C57.96\u57fa\u6e96\u306f\u3001\u5909\u5727\u5668\u306e\u8ca0\u8377\u3068\u7d76\u7e01\u5bff\u547d\u304a\u3088\u3073\u6e29\u5ea6\u3068\u306e\u95a2\u4fc2\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u8a2d\u8a08\u6bb5\u968e\u3067\u3053\u308c\u3089\u306e\u8981\u4ef6\u306b\u5f93\u3046\u30d0\u30a4\u30e4\u30fc\u306f\u3001\u5b9f\u969b\u306e\u8ca0\u8377\u306b\u5408\u308f\u305b\u3066\u8a2d\u8a08\u3055\u308c\u305f\u5909\u5727\u5668\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-30\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/08\/Efficiency-Losses-and-the-Total-Cost-of-Ownership.webp\" alt=\"\u52b9\u7387\u3001\u640d\u5931\u3001\u304a\u3088\u3073\u7dcf\u6240\u6709\u30b3\u30b9\u30c8\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u52b9\u7387\u3001\u640d\u5931\u3001\u304a\u3088\u3073\u7dcf\u6240\u6709\u30b3\u30b9\u30c8<\/h2>\n<p>A <strong>\u6b63\u3057\u304f\u884c\u3046\u305f\u3081\u306b\u306f\u3001\u30d0\u30a4\u30e4\u30fc\u304c\u30c8\u30e9\u30f3\u30b9\u304c\u5b9f\u884c\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3059\u3079\u3066\u306e\u96fb\u6c17\u6a5f\u80fd\u3092\u5b9a\u7fa9\u3057\u3001\u5404\u6a5f\u80fd\u306e\u305f\u3081\u306b\u7279\u5b9a\u306e\u5024\uff08\u96fb\u5727\u3001kVA\u5b9a\u683c\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u3001\u63a5\u5730\u65b9\u6cd5\u3001\u6e29\u5ea6\u4e0a\u6607\u3001\u304a\u3088\u3073\u9069\u7528\u3055\u308c\u308b\u6a19\u6e96\uff09\u3092\u30e1\u30fc\u30ab\u30fc\u306b\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ed5\u69d8\u306b\u542b\u3081\u308b\u3079\u304d\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u30b3\u30f3\u30d3\u30cd\u30fc\u30b7\u30e7\u30f3\u30c8\u30e9\u30f3\u30b9\u69cb\u6210\u3067\u3042\u308b\u88dc\u52a9\u96fb\u6e90\u4e8c\u6b21\u3092\u6301\u3064\u30ef\u30a4\u30c7\u30eb\u30bf\u63a5\u5730\u30c8\u30e9\u30f3\u30b9\u306e\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u8981\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/strong> \u306f\u7121\u8ca0\u8377\u640d\u5931\uff08\u5909\u5727\u5668\u304c\u901a\u96fb\u3057\u3066\u3044\u308b\u3068\u304d\u306b\u5b58\u5728\u3059\u308b\u30b3\u30a2\u640d\u5931\uff09\u3068\u8ca0\u8377\u640d\u5931\uff08\u96fb\u6d41\u306e\u4e8c\u4e57\u306b\u5fdc\u3058\u3066\u5909\u5316\u3059\u308b\u5dfb\u7dda\u640d\u5931\uff09\u306e\u4e21\u65b9\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u88dc\u52a9\u96fb\u529b\u5dfb\u7dda\u306e\u8ca0\u8377\u640d\u5931\u306f\u3001\u30b9\u30c6\u30fc\u30b7\u30e7\u30f3\u30b5\u30fc\u30d3\u30b9\u8ca0\u8377\u304c\u7a3c\u50cd\u3057\u3066\u3044\u308b\u3068\u304d\u306e\u4e3b\u8981\u306a\u640d\u5931\u6210\u5206\u3067\u3042\u308a\u3001\u63a5\u5730\u5dfb\u7dda\u306e\u640d\u5931\u306f\u901a\u5e38\u306e\u904b\u8ee2\u4e2d\u306b\u306f\u7121\u8996\u3067\u304d\u308b\u307b\u3069\u5c0f\u3055\u304f\u3001\u63a5\u5730\u5dfb\u7dda\u306f\u5c0f\u3055\u306a\u4e0d\u5e73\u8861\u4e2d\u6027\u96fb\u6d41\u306e\u307f\u3092\u904b\u3073\u307e\u3059\u3002\u8907\u5408\u5909\u5727\u5668\u306e\u5165\u672d\u3092\u6bd4\u8f03\u3057\u3066\u3044\u308b\u30d0\u30a4\u30e4\u30fc\u306f\u3001\u5e74\u9593\u30a8\u30cd\u30eb\u30ae\u30fc\u640d\u5931\u3092\u73fe\u5728\u4fa1\u5024\u306e\u8cc7\u672c\u30b3\u30b9\u30c8\u306b\u5909\u63db\u3059\u308b\u640d\u5931\u8cc7\u672c\u5316\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u640d\u5931\u3092\u8a55\u4fa1\u3057\u3001\u8cfc\u5165\u4fa1\u683c\u3060\u3051\u3067\u306a\u304f\u3001\u8cc7\u672c\u5316\u3055\u308c\u305f\u640d\u5931\u306e\u4fa1\u5024\u3092\u52a0\u3048\u305f\u7dcf\u8a55\u4fa1\u30b3\u30b9\u30c8\u3092\u6bd4\u8f03\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\uff1a\u7dcf\u8a55\u4fa1\u30b3\u30b9\u30c8 = \u8cfc\u5165\u4fa1\u683c + (A \u00d7 \u7121\u8ca0\u8377\u640d\u5931\uff08\u30ef\u30c3\u30c8\uff09) + (B \u00d7 \u8ca0\u8377\u640d\u5931\uff08\u30ef\u30c3\u30c8\uff09)\u3001\u3053\u3053\u3067A\u3068B\u306f\u30ef\u30c3\u30c8\u3042\u305f\u308a\u306e\u30c9\u30eb\u3067\u8868\u3055\u308c\u308b\u640d\u5931\u8cc7\u672c\u5316\u4fc2\u6570\u3067\u3059\u3002A\u4fc2\u6570\u306f\u300124\u6642\u9593365\u65e5\u7d99\u7d9a\u7684\u306b\u6d88\u8cbb\u3055\u308c\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u30b3\u30b9\u30c8\u3092\u53cd\u6620\u3057\u3001\u901a\u5e38\u306f\u7523\u696d\u304a\u3088\u3073\u516c\u5171\u4e8b\u696d\u7528\u9014\u3067$5\u304b\u3089$10\u306e\u7bc4\u56f2\u3067\u3059\u3002B\u4fc2\u6570\u306f\u3001\u8ca0\u8377\u306e\u4e0b\u3067\u6d88\u8cbb\u3055\u308c\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u30b3\u30b9\u30c8\u3092\u53cd\u6620\u3057\u3001\u901a\u5e38\u306f$1\u304b\u3089$3\u306e\u7bc4\u56f2\u3067\u3059\u3002 <a href=\"https:\/\/www.energy.gov\" rel=\"nofollow noopener\" target=\"_blank\">\u7c73\u56fd\u30a8\u30cd\u30eb\u30ae\u30fc\u7701<\/a> \u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30bf\u30a4\u30d7\u306e\u65bd\u8a2d\u306b\u5bfe\u3059\u308b\u6a19\u6e96\u640d\u5931\u8cc7\u672c\u5316\u4fc2\u6570\u3092\u516c\u8868\u3057\u3066\u304a\u308a\u3001\u30d0\u30a4\u30e4\u30fc\u306f\u3053\u308c\u3089\u306e\u5024\u3001\u307e\u305f\u306f\u81ea\u5206\u306e\u96fb\u6c17\u6599\u91d1\u304b\u3089\u306e\u7279\u5b9a\u306e\u5024\u3092\u4f7f\u7528\u3057\u3066\u3001\u7dcf\u30b3\u30b9\u30c8\u30d9\u30fc\u30b9\u3067\u5165\u672d\u3092\u6bd4\u8f03\u3067\u304d\u307e\u3059\u3002\u8cfc\u5165\u4fa1\u683c\u304c\u9ad8\u304f\u3001\u640d\u5931\u304c\u4f4e\u3044\u8907\u5408\u5909\u5727\u5668\u306f\u3001\u8cfc\u5165\u4fa1\u683c\u304c\u4f4e\u304f\u3001\u640d\u5931\u304c\u9ad8\u3044\u3082\u306e\u3088\u308a\u3082\u7dcf\u8a55\u4fa1\u30b3\u30b9\u30c8\u304c\u4f4e\u304f\u306a\u308b\u3053\u3068\u304c\u591a\u304f\u300125\u5e74\u304b\u308935\u5e74\u306e\u30b5\u30fc\u30d3\u30b9\u30e9\u30a4\u30d5\u306b\u308f\u305f\u3063\u3066\u305d\u306e\u5dee\u306f\u304b\u306a\u308a\u306e\u3082\u306e\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>\u5909\u5727\u5668\u306e80%\u30eb\u30fc\u30eb\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>80%\u30eb\u30fc\u30eb\u306b\u3088\u308c\u3070\u3001\u5909\u5727\u5668\u306f\u5b9a\u683ckVA\u306e80%\u3092\u8d85\u3048\u3066\u9023\u7d9a\u7684\u306b\u8ca0\u8377\u3092\u304b\u3051\u3066\u306f\u306a\u3089\u305a\u3001\u3053\u308c\u306b\u3088\u308a\u7d76\u7e01\u304c\u6025\u901f\u306b\u52a3\u5316\u3059\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u306e\u71b1\u7684\u4f59\u88d5\u304c\u63d0\u4f9b\u3055\u308c\u3001\u3088\u308a\u5927\u304d\u306a\u5909\u5727\u5668\u3092\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u306a\u304f\u8ca0\u8377\u306e\u5897\u52a0\u3092\u4fc3\u9032\u3057\u3001\u5909\u5727\u5668\u306e\u4fdd\u8b77\u88c5\u7f6e\u3092\u30c8\u30ea\u30c3\u30d7\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u77ed\u671f\u7684\u306a\u904e\u8ca0\u8377\u306b\u5bfe\u5fdc\u3059\u308b\u53ef\u80fd\u6027\u304c\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30eb\u30fc\u30eb\u306f\u3001IEEE C57.96\u8ca0\u8377\u30ac\u30a4\u30c9\u304b\u3089\u5c0e\u304d\u51fa\u3055\u308c\u3001\u5909\u5727\u5668\u306e\u30b5\u30a4\u30ba\u6c7a\u5b9a\u306b\u95a2\u3059\u308b\u696d\u754c\u6a19\u6e96\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002.<\/p>\n<h3>\u3069\u306e\u5909\u5727\u5668\u304c\u5fc5\u8981\u304b\u3069\u3046\u3084\u3063\u3066\u77e5\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4f7f\u7528\u3059\u3079\u304d\u5909\u5727\u5668\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u5909\u5727\u5668\u304c\u6e80\u305f\u3055\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3059\u3079\u3066\u306e\u8981\u6c42\u3092\u30e1\u30e2\u3057\u3001\u6700\u7d42\u7684\u306b\u63a5\u7d9a\u3055\u308c\u308b\u7dcfkVA\u3092\u5c0e\u304d\u51fa\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u4f4d\u7f6e\u306b\u57fa\u3065\u3044\u3066\u5909\u5727\u5668\u3092\u9078\u629e\u3057\u307e\u3059\u2014\u5c4b\u5916\u307e\u305f\u306f\u5c4b\u5185\u3001\u3055\u3089\u306b\u3001\u5909\u5727\u5668\u306e\u30bf\u30a4\u30d7\u304c\u4e7e\u5f0f\u307e\u305f\u306f\u6cb9\u6d78\u5f0f\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5efa\u7bc9\u57fa\u6e96\u6cd5\u306e\u8981\u4ef6\u306b\u5f93\u3063\u3066\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u9078\u629e\u3059\u308b\u5909\u5727\u5668\u306e\u5b9a\u683c\u306f\uff08\u6a19\u6e96\u306e\u3082\u306e\uff09\u4e0a\u9650\u306e\u3082\u306e\u3067\u3042\u308a\u300180%\u30eb\u30fc\u30eb\u306b\u95a2\u3057\u3066\u5909\u5727\u5668\u306e\u9023\u7d9a\u904b\u8ee2\u3092\u8d85\u3048\u306a\u3044\u3088\u3046\u306b\u5b9f\u969b\u306e\u8ca0\u8377\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5468\u6ce2\u6570\u3082\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u9069\u5207\u306a\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u3092\u9078\u3076\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u6b63\u3057\u3044\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\uff08CT\uff09\u3092\u9078\u3076\u306b\u306f\u3001\u4e00\u6b21\u96fb\u6d41\uff08CT\u304c\u6e2c\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u6700\u5927\u8ca0\u8377\u96fb\u6d41\uff09\u3001\u4e8c\u6b21\u96fb\u6d41\uff08CT\u306f\u901a\u5e38\u3001\u8a08\u6e2c\u304a\u3088\u3073\u4fdd\u8b77\u7528\u306b5A\u307e\u305f\u306f1A\u306e\u4e8c\u6b21\u96fb\u6d41\u3092\u6301\u3064\uff09\u3001\u7cbe\u5ea6\u30af\u30e9\u30b9\uff08\u5b9a\u683c\u96fb\u6d41\u304a\u3088\u3073\u8ca0\u8377\u306b\u304a\u3051\u308bCT\u306e\u8aa4\u5dee\u3092\u5b9a\u7fa9\uff09\u3001\u8ca0\u8377\uff08CT\u306b\u63a5\u7d9a\u3055\u308c\u308b\u30ea\u30ec\u30fc\u3001\u30e1\u30fc\u30bf\u30fc\u3001\u30ef\u30a4\u30e4\u306e\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\uff09\u3001\u304a\u3088\u3073CT\u306e\u7269\u7406\u7684\u30b5\u30a4\u30ba\u3068\u53d6\u308a\u4ed8\u3051\u30bf\u30a4\u30d7\u3092\u6c7a\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001CT\u306f\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u96fb\u5727\u304a\u3088\u3073\u5229\u7528\u53ef\u80fd\u306a\u77ed\u7d61\u96fb\u6d41\u306b\u5bfe\u3057\u3066\u5b9a\u683c\u3055\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u8907\u5408\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u3068\u306f\u7570\u306a\u308b\u500b\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3042\u308b\u3053\u3068\u3092\u8a00\u53ca\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>\n<h3>\u3069\u306e\u30b5\u30a4\u30ba\u306e\u30c8\u30e9\u30f3\u30b9\u304c\u5fc5\u8981\u304b\u3092\u3069\u3046\u3084\u3063\u3066\u5224\u65ad\u3057\u307e\u3059\u304b\uff1f<\/h3>\n<p>\u5fc5\u8981\u306a\u30c8\u30e9\u30f3\u30b9\u306e\u30b5\u30a4\u30ba\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3001\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u8ca0\u8377\u306ekVA\u3092\u628a\u63e1\u3057\u3001NEC\u307e\u305f\u306f\u5730\u57df\u306e\u898f\u5247\u306b\u5f93\u3063\u3066\u5404\u30bf\u30a4\u30d7\u306e\u8ca0\u8377\u306b\u95a2\u9023\u3059\u308b\u9700\u8981\u4fc2\u6570\u3092\u9069\u7528\u3057\u3001\u540d\u677f\u5b9a\u683c\u306e125%\u3068\u3057\u3066\u3059\u3079\u3066\u306e\u9023\u7d9a\u8ca0\u8377\u3092\u52a0\u7b97\u3057\u3001\u8a08\u7b97\u3055\u308c\u305f\u5024\u304b\u3089\u6700\u3082\u8fd1\u3044\u9ad8\u3044\u6a19\u6e96kVA\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u8a08\u7b97\u3092\u6b63\u3057\u304f\u884c\u3046\u305f\u3081\u306b\u5fc5\u8981\u306a\u60c5\u5831\u306f\u3001\u8ca0\u8377\u8abf\u67fb\u5831\u544a\u66f8\u3001NEC\u7b2c#220\u6761\u306e\u30b3\u30d4\u30fc\u3001\u304a\u3088\u3073\u30e1\u30fc\u30ab\u30fc\u306ekVA\u5b9a\u683c\u30c1\u30e3\u30fc\u30c8\u3067\u3059\u3002.<\/p>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.ieee.org\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.12.01 \u2014 \u4e7e\u5f0f\u914d\u96fb\u304a\u3088\u3073\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u306e\u4e00\u822c\u8981\u4ef6\u306b\u95a2\u3059\u308b\u6a19\u6e96<\/a>. \u4e7e\u5f0f\u30c8\u30e9\u30f3\u30b9\u306e\u8a2d\u8a08\u3001\u8a66\u9a13\u3001\u304a\u3088\u3073\u6027\u80fd\u306b\u95a2\u3059\u308b\u57fa\u790e\u7684\u306aIEEE\u6a19\u6e96\u3067\u3042\u308a\u3001\u8907\u5408\u6a5f\u80fd\u30c8\u30e9\u30f3\u30b9\u306b\u95a2\u3059\u308b\u8981\u4ef6\u3092\u542b\u307f\u307e\u3059\u3002.<\/li>\n<li><a href=\"https:\/\/www.ieee.org\" rel=\"nofollow noopener\" target=\"_blank\">IEEE C57.96 \u2014 \u4e7e\u5f0f\u914d\u96fb\u304a\u3088\u3073\u96fb\u529b\u5909\u5727\u5668\u306e\u8ca0\u8377\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c9<\/a>. \u8ca0\u8377\u3001\u6e29\u5ea6\u3001\u304a\u3088\u3073\u7d76\u7e01\u5bff\u547d\u306e\u95a2\u4fc2\u3092\u5b9a\u7fa9\u3057\u300180%\u8ca0\u8377\u898f\u5247\u306e\u6e90\u3068\u306a\u308bIEEE\u30ac\u30a4\u30c9\u3067\u3059\u3002.<\/li>\n<li><a href=\"https:\/\/www.energy.gov\" rel=\"nofollow noopener\" target=\"_blank\">\u7c73\u56fd\u30a8\u30cd\u30eb\u30ae\u30fc\u7701 \u2014 \u30c8\u30e9\u30f3\u30b9\u8a55\u4fa1\u306e\u305f\u3081\u306e\u640d\u5931\u8cc7\u672c\u5316\u4fc2\u6570<\/a>. \u30c8\u30e9\u30f3\u30b9\u306e\u5165\u672d\u3092\u7dcf\u6240\u6709\u30b3\u30b9\u30c8\u30d9\u30fc\u30b9\u3067\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u640d\u5931\u8cc7\u672c\u5316\u4fc2\u6570\u3092\u516c\u8868\u3059\u308b\u898f\u5236\u6a5f\u95a2\u3067\u3059\u3002.<\/li>\n<li><a href=\"https:\/\/www.nfpa.org\" rel=\"nofollow noopener\" target=\"_blank\">NFPA 70 (NEC) \u2014 \u7b2c220\u6761\uff08\u8ca0\u8377\u8a08\u7b97\uff09\u304a\u3088\u3073\u7b2c450\u6761\uff08\u30c8\u30e9\u30f3\u30b9\uff09<\/a>. \u7c73\u56fd\u306b\u304a\u3051\u308b\u8ca0\u8377\u8a08\u7b97\u304a\u3088\u3073\u30c8\u30e9\u30f3\u30b9\u306e\u8a2d\u7f6e\u306b\u95a2\u3059\u308b\u56fd\u5bb6\u96fb\u6c17\u898f\u5247\u306e\u8981\u4ef6\u3067\u3059\u3002.<\/li>\n<\/ul>\n<p>In this case, the complication comes with selecting a combined transformer which requires identifying all the roles that the transformer needs to fulfil, including voltage conversion, grounding, auxiliary power supply, and voltage regulation and then determining the specifications of each role in such detail that the manufacturer will be able to achieve all of them at once. With a properly defined combined transformer you reduce the footprint, the cost of installation and the maintenance of the electrical system as opposed to a set of single-function transformers. However, if you fail the specification process, it means your grounding kVA, auxiliary voltage, and impedance are not mentioned, and the manufacturer will use its default product thus failing to meet your requirements. Subian Electric produces combined transformers for the global market. The kVA of these transformers, their voltages, grounding, and required test documentation make them an attractive offer for a professional buyer.<\/p>","protected":false},"excerpt":{"rendered":"<p>While carrying out a mining operation in Western Australia, the electrical engineer had a problem of providing the remote crushing plant with appropriate power supply. The equipment on site needed 415 V three-phase power for powering the motors of the crusher, 240 V single-phase power for the lighting and amenities, as well as a neutral point reliable enough for the ground-fault protection system. In total, three transformers &#8211; step-down, auxiliary, and grounding one &#8211; would represent the solution in terms of electrical performance, but the remote area of operation, space limitation on a skid, as well as high transportation and installation cost of separate transformers did not allow to use [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":28,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-26","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\/26","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=26"}],"version-history":[{"count":2,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/26\/revisions"}],"predecessor-version":[{"id":11087,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/26\/revisions\/11087"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/28"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=26"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=26"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}