{"id":11396,"date":"2026-09-02T00:34:44","date_gmt":"2026-09-01T16:34:44","guid":{"rendered":"https:\/\/subian-electric.com\/?p=11396"},"modified":"2026-09-02T00:36:23","modified_gmt":"2026-09-01T16:36:23","slug":"neutral-earthing-resistor","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/blog\/neutral-earthing-resistor\/","title":{"rendered":"\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668 (NER): \u52d5\u4f5c\u539f\u7406\u3001\u9078\u5b9a"},"content":{"rendered":"<p>\u76f8\u8ac7\u3055\u308c\u305f\u969b\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u30ea\u30ec\u30fc\u3001\u906e\u65ad\u5668\u3001\u307e\u305f\u306f\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\uff08CT\uff09\u3092\u6319\u3052\u3066\u3001\u63a5\u5730\u6545\u969c\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u304c\u3069\u306e\u3088\u3046\u306b\u884c\u308f\u308c\u308b\u304b\u3092\u8b70\u8ad6\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u6545\u969c\u306e\u5f37\u5ea6\u3084\u65bd\u8a2d\u5168\u4f53\u304c\u505c\u6b62\u3059\u308b\u304b\u3001\u307e\u305f\u306f1\u3064\u306e\u30d5\u30a3\u30fc\u30c0\u30fc\u306e\u307f\u304c\u505c\u6b62\u3059\u308b\u304b\u306e\u5b9f\u969b\u306e\u6c7a\u5b9a\u306f\u62b5\u6297\u5668\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\uff08NER\uff09\u306f\u3001\u4e2d\u96fb\u5727\uff08MV\uff09\u30b7\u30b9\u30c6\u30e0\u306b\u95a2\u9023\u3059\u308b\u6700\u3082\u91cd\u8981\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e1\u3064\u3068\u898b\u306a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u96fb\u6c17\u5de5\u5b66\u306e\u5916\u90e8\u306e\u4eba\u3005\u306b\u3068\u3063\u3066\u306f\u305d\u308c\u306b\u95a2\u3059\u308b\u60c5\u5831\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001NER\u3068\u306f\u4f55\u304b\u3001\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3001\u305d\u306e\u90e8\u54c1\u3001NER\u306e\u9078\u3073\u65b9\u3001\u305d\u3057\u3066\u305d\u306e\u30b3\u30b9\u30c8\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<blockquote><p>\u7c21\u5358\u306a\u56de\u7b54\uff1aNER\/NGR\u307e\u305f\u306f\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306f\u3001\u767a\u96fb\u6a5f\u307e\u305f\u306f\u30c8\u30e9\u30f3\u30b9\u306e\u4e2d\u6027\u3092\u63a5\u5730\u306b\u63a5\u7d9a\u3059\u308b\u62b5\u6297\u5668\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u306e\u88c5\u7f6e\u306f\u3001\u5358\u76f8\u77ed\u7d61\u63a5\u5730\u6545\u969c\u96fb\u6d41\u3092\u8a31\u5bb9\u53ef\u80fd\u3067\u7ba1\u7406\u53ef\u80fd\u306a\u7bc4\u56f2\u3001\u3059\u306a\u308f\u3061\u6570\u5341\u307e\u305f\u306f\u6570\u767e\u30a2\u30f3\u30da\u30a2\u306e\u7bc4\u56f2\u5185\u306b\u5236\u9650\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002.<\/p><\/blockquote>\n<h2 style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11397\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/Neutral-Earthing-Resistor-NER.webp\" alt=\"\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668 (NER)\" width=\"1448\" height=\"1086\" \/><\/h2>\n<h2>\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306f\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u3001\u767a\u96fb\u6a5f\u307e\u305f\u306f\u30c8\u30e9\u30f3\u30b9\u306e\u4e2d\u6027\u70b9\u3068\u63a5\u5730\u306e\u9593\u306b\u63a5\u7d9a\u3055\u308c\u305f\u62b5\u6297\u5668\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u4e2d\u6027\u5c0e\u4f53\uff08\u30ef\u30a4\u63a5\u7d9a\u5dfb\u7dda\uff09\u3092\u6301\u3064\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3044\u3066\u30011\u3064\u306e\u76f8\u304c\u63a5\u5730\u306b\u63a5\u89e6\u3057\u305f\u5834\u5408\u306e\u63a5\u5730\u6545\u969c\u96fb\u6d41\u306e\u6d41\u308c\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u56de\u8def\u306b\u633f\u5165\u3055\u308c\u308b\u8981\u7d20\u3067\u3059\u3002\u5236\u9650\u3055\u308c\u305f\u96fb\u6d41\u306e\u91cf\u306f\u3001\u30ea\u30ec\u30fc\u304c\u53cd\u5fdc\u3059\u308b\u306e\u306b\u5341\u5206\u5927\u304d\u304f\u3001\u96fb\u529b\u30b1\u30fc\u30d6\u30eb\u3092\u640d\u50b7\u3055\u305b\u305f\u308a\u3001\u4eba\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u305f\u308a\u3057\u306a\u3044\u307b\u3069\u5c0f\u3055\u3044\u3067\u3059\u3002.<\/p>\n<p>\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306f\u3001\u63a5\u5730\u6545\u969c\u304b\u3089\u306e\u6545\u969c\u96fb\u6d41\u304c\u6570\u5343\u30a2\u30f3\u30da\u30a2\u306b\u9054\u3059\u308b\u56fa\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u3068\u3001\u610f\u56f3\u7684\u306b\u63a5\u5730\u3055\u308c\u305f\u4e2d\u6027\u3092\u6301\u305f\u306a\u3044\u63a5\u5730\u3055\u308c\u3066\u3044\u306a\u3044\u30b7\u30b9\u30c6\u30e0\u3068\u3044\u30462\u3064\u306e\u6975\u7aef\u306a\u4f4d\u7f6e\u306e\u4e2d\u9593\u306b\u4f4d\u7f6e\u3057\u3066\u3044\u307e\u3059\u3002\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306f\u3001\u63a5\u5730\u6545\u969c\u96fb\u6d41\u306e\u6d41\u308c\u3092\u5236\u5fa1\u3057\u3001\u691c\u51fa\u53ef\u80fd\u306a\u6545\u969c\u3084\u904e\u96fb\u5727\u30c8\u30e9\u30f3\u30b8\u30a7\u30f3\u30c8\u3092\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n<p>\u30c8\u30e9\u30f3\u30b9\u306e\u4e2d\u6027\u304c\u3069\u306e\u3088\u3046\u306b\u63a5\u5730\u3055\u308c\u308b\u304b\u3068\u3044\u3046\u5e83\u7bc4\u306a\u63a5\u5730\u306e\u72b6\u6cc1\u306f\u3001\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/transformer-grounding-basics\/\">\u30c8\u30e9\u30f3\u30b9\u63a5\u5730\u306e\u57fa\u672c<\/a> \u8a18\u4e8b\u3067\u53d6\u308a\u4e0a\u3052\u3089\u308c\u3066\u3044\u307e\u3059\u3002NER\u306f\u3001\u7279\u5b9a\u306e\u63a5\u5730\u54f2\u5b66\u3092\u6a5f\u80fd\u3055\u305b\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002.<\/p>\n<h2>\u4ed5\u7d44\u307f<\/h2>\n<p>Y\u5f62\u72b6\u306b\u63a5\u7d9a\u3055\u308c\u305f\u30c8\u30e9\u30f3\u30b9\u306b\u304a\u3044\u3066\u3001\u76f8C\u304b\u3089\u63a5\u5730\u3078\u306e\u6545\u969c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3092\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u6545\u969c\u96fb\u6d41\u306e\u7d4c\u8def\u306f\u3001\u6545\u969c\u70b9\u3001\u63a5\u5730\u3001NER\u3001\u30c8\u30e9\u30f3\u30b9\u306e\u4e2d\u6027\u3001\u76f8C\u5dfb\u7dda\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002NER\u306b\u306f\u62b5\u6297\u5668\u304c\u3042\u308a\u3001\u30aa\u30fc\u30e0\u306e\u6cd5\u5247\u306b\u5f93\u3063\u3066\u3001\u89e3\u6c7a\u7b56\u306f\u660e\u3089\u304b\u3067\u3059\u3002.<\/p>\n<p>\u9069\u5207\u306a\u5f0f\uff08\u5b9f\u969b\u306b\u306fIEEE Std 32\uff09\u306b\u3088\u308b\u3068\uff1aR = Vln \/ (\u221a3 \u00d7 If)\u3001\u3053\u3053\u3067Vln\u306f\u76f8\u9593\u306e\u30b7\u30b9\u30c6\u30e0\u7dda\u9593\u96fb\u5727\u3092\u8868\u3057\u3001If\u306f\u6240\u671b\u306e\u5730\u7d61\u96fb\u6d41\u5024\u3092\u6307\u3057\u307e\u3059\u3002\u8a00\u3044\u63db\u3048\u308c\u3070\u3001\u62b5\u6297\u5024\u304c10\u30aa\u30fc\u30e0\u306e\u62b5\u6297\u6027\u63a5\u7d9a\u5668\u3092\u6301\u30646kV\u30b7\u30b9\u30c6\u30e0\u306e\u5834\u5408\u3092\u8a08\u7b97\u306b\u7528\u3044\u308b\u3068\u3001\u6545\u969c\u96fb\u6d41\u306f1000A\u306e\u52b9\u679c\u7684\u306b\u63a5\u5730\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u7d04346A\u306b\u4f4e\u4e0b\u3057\u3001\u3053\u308c\u306f\u30ea\u30ec\u30fc\u3092\u30c8\u30ea\u30c3\u30d7\u3055\u305b\u308b\u306e\u306b\u5341\u5206\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u30b1\u30fc\u30d6\u30eb\u3001\u958b\u9589\u88c5\u7f6e\u3001\u304a\u3088\u3073\u6545\u969c\u7b87\u6240\u304c\u640d\u50b7\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u56de\u5fa9\u53ef\u80fd\u306a\u30ec\u30d9\u30eb\u306b\u4f4e\u304f\u6291\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u6545\u969c\u6642\u306b\u306f\u540c\u6642\u306b\u4e09\u3064\u306e\u3053\u3068\u304c\u8d77\u3053\u308a\u307e\u3059\u3002\u96fb\u6d41\u306f\u62b5\u6297\u5668\u306b\u3088\u3063\u3066\u5236\u9650\u3055\u308c\u3001\u9069\u5207\u306aNER\u30e6\u30cb\u30c3\u30c8\u306b\u3088\u3063\u3066\u96fb\u5727\u304c\u6c7a\u5b9a\u3055\u308c\u3001\u4fdd\u8b77\u30ea\u30ec\u30fc\u304c\u6545\u969c\u3092\u6b63\u78ba\u306b\u691c\u51fa\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u6545\u969c\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u62b5\u6297\u5668\u5185\u3067\u71b1\u3068\u3057\u3066\u6d88\u6563\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001NER\u306f\u77ed\u6642\u9593\u5b9a\u683c\u306e\u307f\u3067\u9023\u7d9a\u904b\u8ee2\u306b\u306f\u9069\u3055\u306a\u3044\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11398\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/Types-of-NER.webp\" alt=\"NER\u306e\u7a2e\u985e\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>NER\u306e\u7a2e\u985e<\/h2>\n<p>NER\u306f\u8a31\u5bb9\u3059\u308b\u6545\u969c\u96fb\u6d41\u306e\u5927\u304d\u3055\u306b\u5fdc\u3058\u3066\u5206\u985e\u3055\u308c\u3001NER\u306e\u7a2e\u985e\u306e\u9078\u629e\u306f\u30b3\u30b9\u30c8\u3088\u308a\u3082\u4fdd\u8b77\u54f2\u5b66\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u6545\u969c\u96fb\u6d41<\/th>\n<th>\u6545\u969c\u6642\u306e\u6319\u52d5<\/th>\n<th>\u4e00\u822c\u7684\u306a\u7528\u9014<\/th>\n<\/tr>\n<tr>\n<td>\u4f4e\u62b5\u6297NER\uff08LRG\uff09<\/td>\n<td>100\uff5e1,000A\uff08\u4e00\u90e8\u8a2d\u8a08\u306f2,500A\u307e\u3067\uff09<\/td>\n<td>\u30ea\u30ec\u30fc\u304c\u8fc5\u901f\u306b\u30c8\u30ea\u30c3\u30d7\u3057\u3001\u30d5\u30a3\u30fc\u30c0\u30fc\u304c\u9694\u96e2\u3055\u308c\u308b<\/td>\n<td>\u4e2d\u5727\u306e\u516c\u5171\u304a\u3088\u3073\u7523\u696d\u7528\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u767a\u96fb\u6a5f\u63a5\u5730<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8\u62b5\u6297NER\uff08HRG\uff09<\/td>\n<td>\u226410A<\/td>\n<td>\u30c8\u30ea\u30c3\u30d7\u306a\u3057\u3001\u8b66\u5831\u306e\u307f\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u7a3c\u50cd\u7d99\u7d9a<\/td>\n<td>\u505c\u6b62\u304c\u6545\u969c\u3088\u308a\u3082\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u9023\u7d9a\u30d7\u30ed\u30bb\u30b9\u30d7\u30e9\u30f3\u30c8<\/td>\n<\/tr>\n<tr>\n<td>\u5e38\u6642\u63a5\u7d9a\u578b<\/td>\n<td>\u2014<\/td>\n<td>\u5e38\u306b\u56de\u8def\u5185\u306b\u3042\u308b<\/td>\n<td>\u5909\u96fb\u6240\u304a\u3088\u3073\u611f\u5ea6\u306e\u9ad8\u3044\u7523\u696d\u7528\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u6642\u63a5\u7d9a\u578b\uff0f\u643a\u5e2f\u578b<\/td>\n<td>\u2014<\/td>\n<td>\u6545\u969c\u6642\u306b\u6295\u5165\u3055\u308c\u308b\u304b\u3001\u8a66\u9a13\u306b\u4f7f\u7528\u3055\u308c\u308b<\/td>\n<td>\u8a66\u904b\u8ee2\u3001\u4fdd\u5b88\u3001\u73fe\u5834\u4f5c\u696d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>LRG\u3068HRG\u306e\u9078\u629e\u306b\u304a\u3044\u3066\u306f\u3001\u505c\u6b62\u304c\u6545\u969c\u3088\u308a\u3082\u60aa\u3044\u304b\u3069\u3046\u304b\u304c\u5224\u65ad\u57fa\u6e96\u3068\u306a\u308a\u307e\u3059\u3002\u516c\u5171\u306e\u30d5\u30a3\u30fc\u30c0\u30fc\u304c\u77ed\u6642\u9593\u306e\u4e2d\u65ad\u3092\u8a31\u5bb9\u3067\u304d\u308b\u5834\u5408\u306f\u3001\u8fc5\u901f\u304b\u3064\u9078\u629e\u7684\u306aLRG\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u5316\u5b66\u30d7\u30e9\u30f3\u30c8\u306e\u3088\u3046\u306b\u3001\u8a08\u753b\u5916\u306e\u505c\u6b62\u304c\u6750\u6599\u306e\u56fa\u5316\u3092\u62db\u304f\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306f\u3001HRG\u3092\u9078\u629e\u3057\u3066\u6545\u969c\u3092\u8a8d\u8b58\u3057\u3064\u3064\u3001\u65bd\u8a2d\u304c\u79e9\u5e8f\u3042\u308b\u505c\u6b62\u6e96\u5099\u3092\u884c\u3048\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u9078\u629e\u306b\u95a2\u3059\u308b\u4fdd\u8b77\u8abf\u6574\u306b\u3064\u3044\u3066\u306f\u3001\u5f53\u793e\u306e <a href=\"\/ja\/blog\/earth-fault-protection-basics\/\">\u63a5\u5730\u6545\u969c\u4fdd\u8b77\u306e\u57fa\u672c<\/a> \u8a18\u4e8b\u3067\u62b5\u6297\u5024\u3068\u30ea\u30ec\u30fc\u8a2d\u5b9a\u304c\u3069\u306e\u3088\u3046\u306b\u9023\u643a\u3059\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u69cb\u9020<\/h2>\n<p>\u73fe\u4ee3\u306eNER\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u5358\u306b\u62b5\u6297\u7d20\u5b50\u3092\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u306b\u53ce\u3081\u305f\u3082\u306e\u4ee5\u4e0a\u306e\u3082\u306e\u3067\u3059\u3002\u5178\u578b\u7684\u306a\u30e6\u30cb\u30c3\u30c8\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u69cb\u6210\u3067\u3059\uff1a<\/p>\n<ul>\n<li>\u62b5\u6297\u7d20\u5b50\uff1a\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u306f\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\uff08304\/316\/316L\uff09\u30b0\u30ea\u30c3\u30c9\u3001\u904e\u9177\u306a\u74b0\u5883\u306b\u306f\u30cb\u30c3\u30b1\u30eb\u30af\u30ed\u30e0\u5408\u91d1\uff08Cr20Ni80\uff09\u3001\u7d4c\u6e08\u7684\u8a2d\u8a08\u306b\u306f\u9244\u30af\u30ed\u30e0\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\uff08FeCrAl\uff09\u3092\u4f7f\u7528\u3002\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u7d20\u5b50\u306f\u77ed\u6642\u9593\u30e2\u30fc\u30c9\u3067760\u00baC\u4ee5\u4e0b\uff08IEEE 32\uff09\u3001\u9023\u7d9a\u904b\u8ee2\u3067\u306f385\u00baC\u4ee5\u4e0b\u3067\u52d5\u4f5c\u53ef\u80fd\u3067\u3059\u3002.<\/li>\n<li>\u7d76\u7e01\u30b7\u30b9\u30c6\u30e0\uff1a\u30b7\u30b9\u30c6\u30e0\u306f\u96fb\u5727\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7279\u6027\u306b\u5fdc\u3058\u3066\u96fb\u529b\u5468\u6ce2\u6570\u8010\u5727\u304a\u3088\u3073\u57fa\u672c\u30a4\u30f3\u30d1\u30eb\u30b9\u30ec\u30d9\u30eb\uff08BIL\uff09\u306b\u52b9\u679c\u7684\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\uff08\u4f8b\uff1a10 kV\u306eNER\u306f\u96fb\u529b\u5468\u6ce2\u6570\u306742 kV\u3001\u30a4\u30f3\u30d1\u30eb\u30b9\u306775 kV\u306b\u8010\u3048\u3089\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff09\u3002.<\/li>\n<li>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\uff1a\u5c4b\u5185\u7528\u306eIP20\/IP23\u304a\u3088\u3073\u5c4b\u5916\u7528\u306e\u30eb\u30fc\u30d0\u30fc\u901a\u6c17\u4ed8\u304dIP54\/IP55\u3002.<\/li>\n<li>\u76e3\u8996\u30c7\u30d0\u30a4\u30b9\uff1a\u6545\u969c\u96fb\u6d41\u6e2c\u5b9a\u7528\u306e\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u3001NER\u3092\u5207\u308a\u96e2\u3059\u305f\u3081\u306e\u30a2\u30a4\u30bd\u30ec\u30fc\u30bf\u30fc\u307e\u305f\u306f\u771f\u7a7a\u63a5\u89e6\u5668\u3001\u958b\u56de\u8def\u62b5\u6297\u3001\u6e29\u5ea6PT100\u3001\u304a\u3088\u3073\u30a4\u30d9\u30f3\u30c8\u30ec\u30b3\u30fc\u30c0\u30fc\u3092\u5099\u3048\u305fNGR\u76e3\u8996\u30c7\u30d0\u30a4\u30b9\u3092\u542b\u3080\u3002.<\/li>\n<\/ul>\n<p>NER\u3092\u8cfc\u5165\u3059\u308b\u3068\u3001\u5185\u90e8\u306e\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306f\u5c0f\u3055\u3044\u304c\u91cd\u8981\u306a\u90e8\u5206\u3067\u3059 \u2014 \u305d\u308c\u306f\u30ea\u30ec\u30fc\u304c\u8aad\u307f\u53d6\u308b\u3082\u306e\u3067\u3042\u308a\u3001 <a href=\"\/ja\/product\/current-transformer\/\">\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u88fd\u54c1\u7bc4\u56f2<\/a> CT\u30d5\u30a1\u30df\u30ea\u30fc\u3068\u305d\u306e\u5b9a\u683c\u3092\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11399\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/NER-The-Symbol-and-Circuit-Position.webp\" alt=\"NER \u30b7\u30f3\u30dc\u30eb\u3068\u56de\u8def\u4f4d\u7f6e\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u30b7\u30f3\u30dc\u30eb\u3068\u56de\u8def\u4f4d\u7f6e<\/h2>\n<p>\u4e00\u7dda\u56f3\u3067\u306f\u3001\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\uff08NER\uff09\u306f\u3001\u30c8\u30e9\u30f3\u30b9\u307e\u305f\u306f\u767a\u96fb\u6a5f\u306e\u4e2d\u6027\u70b9\u3068\u63a5\u7d9a\u3055\u308c\u305f\u4e00\u7aef\u5b50\u3068\u63a5\u5730\u30b7\u30f3\u30dc\u30eb\uff08\u4e09\u672c\u7dda\u306e\u4e09\u89d2\u5f62\uff09\u3092\u63a5\u7d9a\u3059\u308b\u62b5\u6297\u5668\u306e\u8868\u8a18\uff08\u9577\u65b9\u5f62\u307e\u305f\u306f\u30b8\u30b0\u30b6\u30b0\uff09\u3067\u8868\u3055\u308c\u307e\u3059\u3002\u4e2d\u6027\u70b9\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\uff08\u30c7\u30eb\u30bf\u63a5\u7d9a\uff09\u3001\u63a5\u5730\u30c8\u30e9\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4e2d\u6027\u70b9\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u5f8cNER\u304c\u305d\u306e\u4e2d\u6027\u70b9\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u3002\u3044\u305a\u308c\u306e\u5834\u5408\u3067\u3082\u3001\u62b5\u6297\u5668\u306f\u5e38\u306b\u4e2d\u6027\u70b9\u3068\u63a5\u5730\u306e\u9593\u306b\u63a5\u7d9a\u3055\u308c\u3001\u76f8\u5c0e\u4f53\u3068\u76f4\u5217\u306b\u306f\u63a5\u7d9a\u3055\u308c\u307e\u305b\u3093\u3002.<\/p>\n<p>\u30c8\u30e9\u30f3\u30b9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3084\u767a\u96fb\u6a5f\u306e\u56f3\u9762\u3092\u898b\u308b\u3068\u3001NER\u306f\u4e2d\u6027\u63a5\u5730\u56f3\u3068\u3068\u3082\u306b\u4e2d\u6027\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\uff08CT\uff09\u3001\u63a5\u5730\u30b9\u30a4\u30c3\u30c1\u3001\u304a\u3088\u3073\u4e2d\u6027\u30d0\u30b9\u30d0\u30fc\u4fdd\u8b77\u3068\u5171\u306b\u898b\u3064\u304b\u308a\u3001\u63a5\u5730\u6982\u5ff5\u3092\u4e00\u5ea6\u306b\u8a3c\u660e\u3057\u307e\u3059\u3002.<\/p>\n<h2>NER\u306e\u30b5\u30a4\u30ba\u3068\u9078\u5b9a\u65b9\u6cd5<\/h2>\n<p>\u9069\u5207\u306a\u30e6\u30cb\u30c3\u30c8\u3092\u9078\u3076\u3053\u3068\u306f\u30016\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u306e\u30d7\u30ed\u30bb\u30b9\u3067\u3042\u308a\u3001\u305d\u306e\u3044\u305a\u308c\u304b\u3092\u7701\u7565\u3059\u308b\u3068\u5b89\u5168\u304c\u8105\u304b\u3055\u308c\u308b\u304b\u3001\u5de8\u984d\u306e\u30b3\u30b9\u30c8\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u5b9a\u683c\u96fb\u5727 \u2014 \u30b7\u30b9\u30c6\u30e0\u5185\u306e\u5730\u9762\u304b\u3089\u76f8\u3078\u306e\u96fb\u5727\uff08Vln\uff09\u304a\u3088\u3073\u8a2d\u7f6e\u306e\u8981\u4ef6\u306b\u5408\u3063\u305f\u30a4\u30f3\u30d1\u30eb\u30b9\u8010\u5727\u3002.<\/li>\n<li>\u6545\u969c\u96fb\u6d41\u76ee\u6a19\uff08If\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5bb9\u91cf\u6027\u5145\u96fb\u96fb\u6d41\u3088\u308a\u3082\u9ad8\u304f\uff08\u30a2\u30fc\u30af\u3084\u5171\u632f\u904e\u96fb\u5727\u3092\u907f\u3051\u308b\u305f\u3081\uff09\u3001\u30b1\u30fc\u30d6\u30eb\u304a\u3088\u3073\u6a5f\u5668\u306e\u71b1\u5bb9\u91cf\u306e\u9650\u754c\u3088\u308a\u3082\u4f4e\u304f\u3001\u30ea\u30ec\u30fc\u306e\u4f5c\u52d5\u3092\u5927\u5e45\u306b\u4e0a\u56de\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff0810A\u672a\u6e80\u3067\u306f\u306a\u3044\uff09\u3002.<\/li>\n<li>\u62b5\u6297\u5024 = R = Vln \/ (\u221a3 \u00d7 If)\u3002.<\/li>\n<li>\u6642\u9593\u5b9a\u683c = LRG\u306e\u5834\u5408\u306f10\u79d2\u301c30\u79d2\u3001HRG\u306e\u5834\u5408\u306f\u9023\u7d9a\u3067\u3001\u71b1\u8a2d\u8a08\u304a\u3088\u3073I\u00b2t\u30a8\u30cd\u30eb\u30ae\u30fc\u5b9a\u683c\u306e\u6c7a\u5b9a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\uff08\u4f8b\uff1a10kA\/0.4\u79d2\u3067400 kA\u00b2s\u306b\u8010\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\uff09\u3002.<\/li>\n<li>\u8981\u7d20\u306e\u6750\u6599 = \u4e00\u822c\u7528\u9014\u5411\u3051\u306e\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3001\u6cbf\u5cb8\u5730\u57df\u3067\u306e\u4f7f\u7528\u5411\u3051\u306e\u30cb\u30c3\u30b1\u30eb\u30af\u30ed\u30e0\u5408\u91d1\u3002.<\/li>\n<li>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u3068\u76e3\u8996 = \u5c4b\u5185\u307e\u305f\u306f\u5c4b\u5916\u306e\u3044\u305a\u308c\u306b\u306a\u308b\u304b\u3001CT\u304a\u3088\u3073\u7d71\u5408\u3055\u308c\u305f\u76e3\u8996\u30e6\u30cb\u30c3\u30c8\u306e\u4fa1\u5024\uff08\u4fdd\u8b77\u306eIP\u7b49\u7d1a\uff09\u3002.<\/li>\n<\/ul>\n<p>\u3055\u3089\u306b\u3001IEEE 32\u304b\u3089\u306e\u5b9f\u7528\u7684\u306a\u63a8\u5968\u4e8b\u9805\u304c\u3042\u308a\u3001\u5065\u5168\u306a\u30b7\u30b9\u30c6\u30e0\u306e\u9023\u7d9a\u5b9a\u683c\u306e\u4f7f\u7528\u306b\u95a2\u3059\u308b\u3082\u306e\u3067\u3001\u5e38\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u8a2d\u7f6e\u306e\u305f\u3081\u306e\u30d5\u30eb\u30ed\u30fc\u30c9\u96fb\u6d415%-10%\u3067\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u3092\u9078\u629e\u3059\u308b\u969b\u306f\u3001\u5e38\u306b\u6301\u7d9a\u6642\u9593\u3092\u793a\u3057\u3066\u304f\u3060\u3055\u3044\uff1a\u300c10\u79d2\u5b9a\u683c\u3001400A\u300d\u306f\u300c\u9023\u7d9a\u300110A\u300d\u3068\u306f\u5168\u304f\u7570\u306a\u308b\u88fd\u54c1\u3067\u3042\u308a\u3001\u4ed5\u69d8\u30a8\u30e9\u30fc\u306e\u4f8b\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u30b9\u30bf\u30c7\u30a3\u3092\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u4ed5\u69d8\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u652f\u63f4\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001, <a href=\"\/ja\/contact-us\/\">\u5f53\u793e\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/a> \u96fb\u5727\u3001\u63a5\u5730\u54f2\u5b66\u3001\u304a\u3088\u3073\u4fdd\u8b77\u8a2d\u5b9a\u3092\u304a\u77e5\u3089\u305b\u304f\u3060\u3055\u3044\u3002.<\/p>\n<h2>\u5229\u70b9\u3068\u4ed6\u306e\u63a5\u5730\u3068\u306e\u6bd4\u8f03<\/h2>\n<p>\u56fa\u4f53\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u307e\u305f\u306f\u63a5\u5730\u306a\u3057\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u4ee3\u308f\u308a\u306bNER\u3092\u4f7f\u7528\u3059\u308b\u5229\u70b9\u306f\u4f55\u3067\u3059\u304b\uff1f<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u63a5\u5730\u65b9\u6cd5<\/th>\n<th>\u6545\u969c\u96fb\u6d41<\/th>\n<th>\u6545\u969c\u691c\u51fa<\/th>\n<th>\u904e\u96fb\u5727\u5236\u5fa1<\/th>\n<th>\u9023\u7d9a\u6027<\/th>\n<\/tr>\n<tr>\n<td>\u78ba\u5b9f\u306b\u63a5\u5730\u3055\u308c\u305f<\/td>\n<td>\u975e\u5e38\u306b\u9ad8\u3044\uff081,000s A\uff09<\/td>\n<td>\u512a\u308c\u305f<\/td>\n<td>\u826f\u597d<\/td>\n<td>\u6545\u969c\u6642\u306b\u30c8\u30ea\u30c3\u30d7<\/td>\n<\/tr>\n<tr>\n<td>NER\uff08LRG\uff09<\/td>\n<td>100-1,000A<\/td>\n<td>\u512a\u308c\u305f<\/td>\n<td>\u826f\u597d\uff08\u30a2\u30fc\u30af\u6291\u5236\uff09<\/td>\n<td>\u6545\u969c\u6642\u306b\u9078\u629e\u7684\u306b\u30c8\u30ea\u30c3\u30d7<\/td>\n<\/tr>\n<tr>\n<td>NER\uff08HRG\uff09<\/td>\n<td>\u226410A<\/td>\n<td>\u30a2\u30e9\u30fc\u30e0\u30d9\u30fc\u30b9<\/td>\n<td>\u512a\u308c\u305f<\/td>\n<td>\u52d5\u4f5c\u3057\u7d9a\u3051\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u975e\u63a5\u5730<\/td>\n<td>\u306a\u3057\uff08\u6700\u521d\u306e\u6545\u969c\uff09<\/td>\n<td>\u4e0d\u826f<\/td>\n<td>\u4e0d\u826f \u2014 \u30a2\u30fc\u30af\u904e\u96fb\u5727<\/td>\n<td>\u52d5\u4f5c\u3059\u308b\u304c\u5371\u967a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>NER\u3092\u4f7f\u7528\u3059\u308b\u4e3b\u306a\u5229\u70b9\u306f\u5b89\u5168\u6027\u3067\u3059\uff08\u6700\u5927\u63a5\u89e6\u96fb\u5727\u306fIEC 60479\u306b\u5f93\u304450V\u672a\u6e80\uff09\u3001\u6a5f\u5668\u3078\u306e\u640d\u50b7\u304b\u3089\u306e\u4fdd\u8b77\uff08\u30ad\u30ed\u30dc\u30eb\u30c8\u30aa\u30fc\u30c0\u30fc\u306e\u904e\u96fb\u5727\u306f\u767a\u751f\u3057\u307e\u305b\u3093\uff09\u3001\u6545\u969c\u767a\u751f\u6642\u306e\u640d\u50b7\u306e\u5236\u9650\uff08\u6545\u969c\u96fb\u6d41\u306f\u5236\u9650\u3055\u308c\u307e\u3059\uff09\u3001\u9078\u629e\u7684\u4fdd\u8b77\uff08\u30ea\u30ec\u30fc\u306f\u4e0d\u5fc5\u8981\u306a\u52d5\u4f5c\u306a\u3057\u306b\u4f5c\u52d5\u3057\u307e\u3059\uff09\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5b9a\u6027\uff08\u6545\u969c\u3057\u3066\u3044\u306a\u3044\u76f8\u306f\u6b63\u5e38\u96fb\u5727\u306e10%\u307e\u3067\u7b49\u3057\u3044\u96fb\u5727\u3092\u6301\u3061\u3001\u30b7\u30b9\u30c6\u30e0\u306e90%\u4ee5\u4e0a\u304c\u52d5\u4f5c\u3057\u307e\u3059\uff09\u3002\u30d3\u30b8\u30cd\u30b9\u306b\u3068\u3063\u3066\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u304c\u8a31\u5bb9\u3067\u304d\u306a\u3044\u5834\u5408\u3001NER\u306e\u4f7f\u7528\u306f\u8a08\u753b\u5916\u306e\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3068\u5236\u5fa1\u3055\u308c\u305f\u30a2\u30e9\u30fc\u30e0\u767a\u751f\u306e\u9055\u3044\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2>\u4fa1\u683c\u5e2f<\/h2>\n<p>NER\u306e\u4fa1\u683c\u306f\u96fb\u5727\u306e\u7a0b\u5ea6\u3001\u96fb\u6d41\u5b9a\u683c\u3001\u6642\u9593\u5b9a\u683c\u3001\u304a\u3088\u3073\u5fc5\u8981\u306a\u30a2\u30af\u30bb\u30b5\u30ea\u30fc\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002.<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u69cb\u6210<\/th>\n<th>\u5178\u578b\u7684\u306a\u4fa1\u683c<\/th>\n<\/tr>\n<tr>\n<td>\u4f4e\u96fb\u5727HRG\u30e6\u30cb\u30c3\u30c8\uff08\u5c0f\u578b\u3001\u5c4b\u5185\uff09<\/td>\n<td>$1,500-5,000<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u96fb\u5727NER\u300110\u79d2\u5b9a\u683c\u3001\u57fa\u672c\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc<\/td>\n<td>$3,000-12,000<\/td>\n<\/tr>\n<tr>\n<td>CT + \u76e3\u8996\u30e6\u30cb\u30c3\u30c8\u4ed8\u304d\u4e2d\u96fb\u5727NER<\/td>\n<td>$8,000-20,000<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8\u4ed5\u69d8\u30e6\u30cb\u30c3\u30c8\uff0835kV\u30af\u30e9\u30b9\u3001NiCr\u8981\u7d20\u3001\u5c4b\u5916IP55\u3001\u5b8c\u5168\u76e3\u8996\uff09<\/td>\n<td>$15,000-30,000+<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u307e\u305f\u3001\u30e9\u30a4\u30bb\u30f3\u30b9\u3092\u6301\u3064\u30af\u30eb\u30fc\u306e\u96c7\u7528\u3001\u30b1\u30fc\u30d6\u30eb\u7aef\u672b\u51e6\u7406\u3001\u8a66\u904b\u8ee2\u30c6\u30b9\u30c8\u306a\u3069\u306e\u8a2d\u7f6e\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u3001\u3053\u308c\u3089\u306f\u7dcf\u30b3\u30b9\u30c8\u306b\u7d0410%-25%\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u62b5\u6297\u5668\u3068\u30ea\u30ec\u30fc\u3092\u5358\u4e00\u306e\u30bd\u30fc\u30b9\u304b\u3089\u8cfc\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u90e8\u54c1\u306e\u4e92\u63db\u6027\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002.<\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>\u63a5\u5730\u3068\u4e2d\u6027\u62b5\u6297\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u63a5\u5730\u306f\u3001\u5b89\u5168\u306e\u305f\u3081\u306b\u4e2d\u6027\u70b9\u3001\u30d5\u30ec\u30fc\u30e0\u3001\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u306e\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30e3\u30fc\u3092\u63a5\u7d9a\u3059\u308b\u901a\u5e38\u306e\u6163\u884c\u3092\u8868\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001\u4e2d\u6027\u62b5\u6297\u306f\u3001\u63a5\u5730\u6545\u969c\u96fb\u6d41\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u4e2d\u6027\u3068\u63a5\u5730\u306e\u9593\u306b\u62b5\u6297\u5668\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u62b5\u6297\u63a5\u5730\u306f\u63a5\u5730\u54f2\u5b66\u306e\u4e00\u7a2e\u3067\u3042\u308a\u3001\u4ed6\u306b\u306f\u56fa\u4f53\u63a5\u5730\u3001\u30a4\u30f3\u30d4\u30fc\u30c0\u30f3\u30b9\u63a5\u5730\u3001\u975e\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u304c\u542b\u307e\u308c\u307e\u3059\u3002.<\/p>\n<h3>\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u306f\uff1f<\/h3>\n<p>\u8a08\u7b97\u306f\u6b21\u306e\u5f0f R=Vln\/(\u221a3 \u00d7 If) \u3092\u4f7f\u7528\u3057\u3066\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u3001Vln\u306f\u96fb\u6e90\u306e2\u3064\u306e\u76f8\u9593\u306e\u96fb\u5727\u3067\u3042\u308a\u3001If\u306f\u9078\u629e\u3055\u308c\u305f\u63a5\u5730\u6545\u969c\u96fb\u6d41\u3067\u3059\u3002\u9078\u629e\u3055\u308c\u305f\u63a5\u5730\u6545\u969c\u96fb\u6d41\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u5bb9\u91cf\u6027\u96fb\u6d41\u3088\u308a\u5927\u304d\u304f\u3001\u30b1\u30fc\u30d6\u30eb\u304a\u3088\u3073\u6a5f\u5668\u306e\u9650\u754c\u3092\u8d85\u3048\u305a\u3001\u30ea\u30ec\u30fc\u304c\u691c\u51fa\u3059\u308b\u96fb\u6d41\u3088\u308a\u3082\u5927\u5e45\u306b\u5927\u304d\u3044\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30e6\u30cb\u30c3\u30c8\u306eI\u00b2t\u30a8\u30cd\u30eb\u30ae\u30fc\u5236\u9650\u306f\u6545\u969c\u306e\u9577\u3055\u306b\u5bfe\u5fdc\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h3>\u306a\u305c\u4e2d\u6027\u3068\u63a5\u5730\u306e\u9593\u306b230V\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u9069\u5207\u306a\u4f5c\u696d\u6761\u4ef6\u4e0b\u3067\u306e\u4e2d\u6027\u304b\u3089\u63a5\u5730\u3078\u306e\u96fb\u5727\u306f\u3001\u63a5\u5730\u3078\u306e\u4e2d\u6027\u306e\u63a5\u7d9a\u306b\u3088\u308a\u30bc\u30ed\u3067\u3042\u308b\u3079\u304d\u3067\u3059\u3002\u9577\u6642\u9593\u306b\u308f\u305f\u3063\u3066\u898b\u3089\u308c\u308b230\u30dc\u30eb\u30c8\u306e\u5024\u306f\u3001\u4e2d\u6027\u304b\u3089\u63a5\u5730\u3078\u306e\u63a5\u7d9a\u306e\u55aa\u5931\u307e\u305f\u306f\u9ad8\u62b5\u6297\u3001\u307e\u305f\u306f\u591a\u7dda\u56de\u8def\u306b\u304a\u3051\u308b\u4e2d\u6027\u306e\u6b20\u5982\u3001\u307e\u305f\u306f\u9069\u5207\u306b\u63a5\u5730\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u4e2d\u6027\u306e\u5207\u65ad\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u72b6\u6cc1\u306f\u3059\u3079\u3066\u3001\u8cc7\u683c\u3092\u6301\u3064\u96fb\u6c17\u6280\u5e2b\u307e\u305f\u306f\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3088\u3063\u3066\u78ba\u8a8d\u3055\u308c\u308b\u3079\u304d\u3067\u3059\u3002.<\/p>\n<h3>\u4e2d\u6027\u63a5\u5730\u306e\u76ee\u7684\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u4e2d\u6027\u63a5\u5730\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u96fb\u5727\u3092\u3044\u304f\u3064\u304b\u306e\u57fa\u6e96\u70b9\u306b\u30ea\u30f3\u30af\u3055\u305b\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3057\u3001\u76f8\u9593\u304a\u3088\u3073\u63a5\u5730\u9593\u306e\u96fb\u5727\u3092\u4e88\u6e2c\u3057\u3001\u6545\u969c\u3092\u691c\u51fa\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/p>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.omo-np.com\/blog\/2025-06\/In-Depth-Guide-to-Neutral-Earthing-Resistor-NER-Technology-and-Applications.html\" rel=\"nofollow noopener\" target=\"_blank\">OMO \u2014 \u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u6280\u8853\u306e\u8a73\u7d30\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/www.digi-electronics.uk\/uk\/blogs\/neutral-earthing-resistors-ners-guide-working-principle-design-applications\/152.html\" rel=\"nofollow noopener\" target=\"_blank\">DiGi Electronics \u2014 \u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u30ac\u30a4\u30c9<\/a><\/li>\n<li><a href=\"https:\/\/www.orionresistors.com\/news\/one-minute-calculate-neutral-grounding-resistor.html\" rel=\"nofollow noopener\" target=\"_blank\">Orion Resistors \u2014 \u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306e\u8a08\u7b97 (6kV-35kV)<\/a><\/li>\n<li><a href=\"https:\/\/www.captech.com.au\/wp-content\/uploads\/2015\/12\/What-is-a-Neutral-Earthing-Resistor.pdf\" rel=\"nofollow noopener\" target=\"_blank\">Captech \u2014 \u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u3068\u306f\uff1f<\/a><\/li>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/document\/174537\" rel=\"nofollow noopener\" target=\"_blank\">IEEE Std 32 \u2014 \u4e2d\u6027\u63a5\u5730\u88c5\u7f6e\u306e\u8981\u4ef6\u3001\u7528\u8a9e\u3001\u304a\u3088\u3073\u8a66\u9a13\u624b\u9806<\/a><\/li>\n<\/ul>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306f\u3001\u63a5\u5730\u6545\u969c\u306e\u904b\u547d\u3092\u6c7a\u5b9a\u3059\u308b\u76ee\u7acb\u305f\u306a\u3044\u88c5\u7f6e\u3067\u3042\u308a\u3001\u30a2\u30fc\u30af\u3084\u5168\u4f53\u306e\u30d7\u30e9\u30f3\u30c8\u505c\u6b62\u3068\u306f\u7570\u306a\u308a\u3001\u7ba1\u7406\u53ef\u80fd\u3067\u8a8d\u8b58\u53ef\u80fd\u306a\u767a\u751f\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u307e\u3059\u3002\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306e\u672c\u8cea\u306f\u3001\u30aa\u30fc\u30e0\u306e\u6cd5\u5247\u306b\u57fa\u3065\u3044\u3066\u7c21\u6f54\u306b\u8aac\u660e\u3067\u304d\u307e\u3059 \u2014 R = Vln \/ (\u221a3 \u00d7 If)\u3002\u307e\u305f\u3001\u4e2d\u6027\u63a5\u5730\u306e\u539f\u5247\u306f2\u3064\u306e\u65b9\u6cd5\u3067\u9054\u6210\u3055\u308c\u307e\u3059\u3002\u6700\u521d\u306e\u65b9\u6cd5\u306f\u3001100-1,000 A\u3067\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u4f4e\u62b5\u6297\u63a5\u5730\u30b7\u30b9\u30c6\u30e0\u3067\u3042\u308a\u30012\u756a\u76ee\u306e\u65b9\u6cd5\u306f\u300110 A\u672a\u6e80\u3067\u52d5\u4f5c\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u8b66\u544a\u3092\u767a\u3057\u306a\u304c\u3089\u30d7\u30ed\u30bb\u30b9\u3092\u505c\u6b62\u3057\u306a\u3044\u9ad8\u62b5\u6297\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002\u5168\u4f53\u3068\u3057\u3066\u3001\u5b89\u5168\u3067\u52b9\u7387\u7684\u306a\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u3092\u9078\u5b9a\u3059\u308b\u969b\u306b\u306f\u3001\u96fb\u5727\u3001\u6545\u969c\u96fb\u6d41\u3001\u62b5\u6297\u3001\u6642\u9593\u5b9a\u683c\u3001\u90e8\u54c1\u306e\u6750\u6599\u304a\u3088\u3073\u30b1\u30fc\u30b9\u6750\u6599\u306e6\u3064\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3044\u305a\u308c\u304b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u8aa4\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u5b89\u5168\u88c5\u7f6e\u306f\u706b\u707d\u306e\u5371\u967a\u3068\u306a\u308a\u307e\u3059\u3002\u4e2d\u6027\u63a5\u5730\u62b5\u6297\u5668\u306e\u4fa1\u683c\u306f\u3001\u5c0f\u578bLV\u30c7\u30d0\u30a4\u30b9\u3067\u7d04$1,500\u3001\u5b8c\u5168\u76e3\u8996\u3055\u308c\u305f35kV\u30b7\u30b9\u30c6\u30e0\u3067$30,000\u4ee5\u4e0a\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u96fb\u529b\u30a8\u30cd\u30eb\u30ae\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u4fdd\u967a\u306e\u4e2d\u3067\u6700\u3082\u5b89\u4fa1\u306a\u5f62\u614b\u306e1\u3064\u3067\u3042\u308a\u3001\u8cb4\u91cd\u306a\u767a\u96fb\u6a5f\u3084\u5909\u5727\u5668\u3092\u6551\u3044\u3001\u7834\u58ca\u3055\u308c\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u4e8b\u6545\u306e\u767a\u751f\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>When consulted, engineers could mention relays, circuit breakers, or current transformers (CTs) to discuss how protection against ground fault is carried out. However, the actual decision about the strength of the fault and whether the entire facility shuts down or only one feeder is made by a resistor. Neutral earthing resistor (NER) is considered to be one of the most critical components related to medium voltage (MV) systems, however, there is little information about it for people outside electrical engineering. This article covers what is NER, how it functions, its parts, how to choose NERs, and how much it costs. Quick answer: NER\/NGR or Neutral earthing resistor means a resistor [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11397,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11396","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/11396","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=11396"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/11396\/revisions"}],"predecessor-version":[{"id":11402,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/11396\/revisions\/11402"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/11397"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=11396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=11396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=11396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}