{"id":11533,"date":"2026-09-13T09:17:30","date_gmt":"2026-09-13T01:17:30","guid":{"rendered":"https:\/\/subian-electric.com\/?p=11533"},"modified":"2026-09-13T09:19:38","modified_gmt":"2026-09-13T01:19:38","slug":"current-transformer-connection","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ja\/blog\/current-transformer-connection\/","title":{"rendered":"\u96fb\u6d41\u5909\u5727\u5668\u63a5\u7d9a\uff1a\u914d\u7dda\u56f3"},"content":{"rendered":"<p>\u96fb\u6d41\u5909\u5727\u5668 (CT) \u306f\u3001\u5927\u91cf\u306e\u96fb\u6d41\u3084\u76f4\u63a5\u6e2c\u5b9a\u3067\u304d\u306a\u3044\u30ec\u30d9\u30eb\u3092\u6e2c\u5b9a\u3059\u308b\u305f\u3081\u306e\u8a08\u6e2c\/\u4fdd\u8b77\u30b7\u30b9\u30c6\u30e0\u3068\u5171\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30d0\u30a4\u30b9\u3067\u3059\u3002\u3053\u308c\u306f\u3001400\u30011000\u3001\u304a\u3088\u30733000 A\u306e\u96fb\u6d41\u30925\u307e\u305f\u306f1 A\u306e\u4f7f\u7528\u53ef\u80fd\u306a\u5024\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u3053\u306e\u5909\u5316\u306f\u3001CT\u30c7\u30d0\u30a4\u30b9\u304c\u5f93\u3046\u3079\u304d\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u767a\u751f\u3057\u307e\u3059\uff1a\u6975\u6027\u306f\u6b63\u3057\u304f\u3001\u8ca0\u8377\u306f\u6b63\u78ba\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u96fb\u6d41\u304c\u6d41\u308c\u3066\u3044\u308b\u9593\u306f\u4e8c\u6b21\u914d\u7dda\u304c\u958b\u56de\u8def\u306b\u3055\u3089\u3055\u308c\u308b\u3053\u3068\u306f\u6c7a\u3057\u3066\u3042\u308a\u307e\u305b\u3093\u3002\u30de\u30cb\u30e5\u30a2\u30eb\u306b\u306f\u3001CT\u3068\u8a08\u6e2c\u3001\u30ea\u30ec\u30fc\u3001\u76e3\u8996\u30c7\u30d0\u30a4\u30b9\u3068\u306e\u914d\u7dda\u63a5\u7d9a\u306b\u95a2\u3059\u308b\u4ed5\u69d8\u3001\u914d\u7dda\u306e\u6bb5\u968e\u7684\u306a\u8a2d\u5b9a\u65b9\u6cd5\u3001\u304a\u3088\u3073\u4e09\u76f8\u30e2\u30c7\u30eb\u306e\u914d\u7dda\u65b9\u6cd5\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<blockquote><p>\u30c7\u30d0\u30a4\u30b9\u306b\u63a5\u7d9a\u3055\u308c\u305f\u4e00\u6b21\u96fb\u6d41\u307e\u305f\u306f\u5c0e\u4f53\u304c\u5909\u5727\u5668P1\u304a\u3088\u3073P2\u3092\u901a\u904e\u3059\u308b\u3053\u3068\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u4e8c\u6b21\u7aef\u5b50P1\u304a\u3088\u3073P2\u3067\u8a18\u9332\u3055\u308c\u305f\u8aad\u307f\u53d6\u308a\u5024\u306f\u3001S1\u304c\u3059\u3079\u3066\u306e\u30b1\u30fc\u30b9\u3067P1\u3068\u4e00\u81f4\u3057\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u8aa4\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5358\u4e00\u306e\u5909\u5727\u5668\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001S1\u304a\u3088\u3073S2\u306e\u63a5\u7d9a\u306f\u3059\u3079\u3066\u306e\u4e09\u76f8\u63a5\u7d9a\u306b\u5bfe\u3057\u3066\u672a\u4f7f\u7528\u3067\u3059\u3002\u5358\u4e00\u306eCT\u304c\u4f7f\u7528\u3055\u308c\u308b\u5834\u5408\u3001S1\u304a\u3088\u3073S2\u306e2\u3064\u306e\u76f4\u63a5\u63a5\u7d9a\u304c\u5e38\u306b\u884c\u308f\u308c\u308b\u305f\u3081\u3001\u4ed6\u306e\u63a5\u7d9a\u65b9\u6cd5\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002\u4e09\u76f8\u914d\u7dda\u306e\u5834\u5408\u3001\u5909\u5727\u5668\u306f\u300cY\u300d\u307e\u305f\u306f\u30b9\u30bf\u30fc\u63a5\u7d9a\u65b9\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u63a5\u7d9a\u3055\u308c\u3001S1\u306f\u4e09\u3064\u306e\u8a08\u6e2c\u5165\u529b\u306b\u63a5\u7d9a\u3055\u308c\u3001S2\u63a5\u7d9a\u306f\u4e0a\u8a18\u306e\u3044\u305a\u308c\u304b\u306e\u65b9\u6cd5\u306b\u95a2\u4fc2\u306a\u304f\u5171\u901a\u306e\u30b9\u30bf\u30fc\u70b9\u3067\u63a5\u7d9a\u3055\u308c\u308b\u63a5\u5408\u70b9\u3067\u884c\u308f\u308c\u307e\u3059\u3002.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11534\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/Current-Transformer-Connection.webp\" alt=\"\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u63a5\u7d9a\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u96fb\u6d41\u5909\u5727\u5668\u304c\u4f55\u3092\u3059\u308b\u306e\u304b\u3001\u63a5\u7d9a\u304c\u91cd\u8981\u306a\u7406\u7531<\/h2>\n<p>CT\u306f\u3001\u4e00\u6b21\u96fb\u6d41\u3092\u53d6\u308a\u3001\u6bd4\u4f8b\u3057\u305f\u4e8c\u6b21\u96fb\u6d41\u3092\u751f\u6210\u3057\u3001\u4e00\u6b21\u56de\u8def\u304b\u3089\u306e\u7d76\u7e01\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u7279\u6b8a\u306a\u5909\u5727\u5668\u3067\u3059\u3002400\/5 CT\u306f\u3001\u4e00\u6b21\u306b400\u30a2\u30f3\u30da\u30a2\u306e\u96fb\u6d41\u304c\u6d41\u308c\u3066\u3044\u308b\u3068\u304d\u306b\u4e8c\u6b21\u30675\u30a2\u30f3\u30da\u30a2\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u534a\u8ca0\u8377\u6642\u306b\u306f2.5\u30a2\u30f3\u30da\u30a2\u3092\u63d0\u4f9b\u3057\u3001\u63a5\u7d9a\u3055\u308c\u305f\u30e1\u30fc\u30bf\u30fc\u307e\u305f\u306f\u30ea\u30ec\u30fc\u306f\u3053\u306e\u60c5\u5831\u3092\u89e3\u91c8\u3057\u3001\u4e00\u6b21\u306b\u623b\u3057\u307e\u3059\u3002.<\/p>\n<table>\n<tbody>\n<tr>\n<th>CT\u30bf\u30a4\u30d7<\/th>\n<th>\u69cb\u9020<\/th>\n<th>\u4e00\u822c\u7684\u306a\u4f7f\u7528<\/th>\n<\/tr>\n<tr>\n<td>\u30d0\u30fc\u4e00\u6b21\uff08\u30a6\u30a3\u30f3\u30c9\u30a6\uff09CT<\/td>\n<td>\u4e00\u6b21\u306f\u56fa\u5b9a\u30d0\u30fc\u307e\u305f\u306f\u30d0\u30b9\u30d0\u30fc\u304c\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u901a\u904e\u3057\u307e\u3059<\/td>\n<td>\u30b9\u30a4\u30c3\u30c1\u30ae\u30a2\u3001\u30d1\u30cd\u30eb\u30e1\u30fc\u30bf\u30fc\u3001\u65e2\u5b58\u306e\u30d0\u30fc\u306e\u5468\u308a\u306e\u30ec\u30c8\u30ed\u30d5\u30a3\u30c3\u30c8<\/td>\n<\/tr>\n<tr>\n<td>\u5dfb\u7dda\u4e00\u6b21CT<\/td>\n<td>\u4e00\u6b21\u306f\u7aef\u5b50\uff08P1\/P2\uff09\u306b\u5f15\u304d\u51fa\u3055\u308c\u305f\u5dfb\u7dda\u3067\u3059<\/td>\n<td>\u4f4e\u6bd4\u7387\u304a\u3088\u3073\u7279\u5225\u6bd4\u7387\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30d7\u30ea\u30c3\u30c8\u30b3\u30a2CT<\/td>\n<td>\u65e2\u5b58\u306e\u5c0e\u4f53\u306e\u5468\u308a\u306b\u30af\u30e9\u30f3\u30d7\u3057\u3001\u5207\u65ad\u306a\u3057\u3067\u4f7f\u7528\u3057\u307e\u3059<\/td>\n<td>\u30ec\u30c8\u30ed\u30d5\u30a3\u30c3\u30c8\u30a8\u30cd\u30eb\u30ae\u30fc\u76e3\u8996\u3001\u30b5\u30d6\u30e1\u30fc\u30bf\u30ea\u30f3\u30b0<\/td>\n<\/tr>\n<tr>\n<td>\u30d6\u30c3\u30b7\u30f3\u30b0CT<\/td>\n<td>\u5909\u5727\u5668\u307e\u305f\u306f\u30d6\u30ec\u30fc\u30ab\u30fc\u30d6\u30c3\u30b7\u30f3\u30b0\u306b\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059<\/td>\n<td>\u5909\u5727\u5668\u304a\u3088\u3073\u30b9\u30a4\u30c3\u30c1\u30ae\u30a2\u306e\u4fdd\u8b77<\/td>\n<\/tr>\n<tr>\n<td>\u30b3\u30a2\u30d0\u30e9\u30f3\u30b9\uff08\u30bc\u30ed\u30b7\u30fc\u30b1\u30f3\u30b9\uff09CT<\/td>\n<td>\u3059\u3079\u3066\u306e\u76f8\u5c0e\u4f53\u304c1\u3064\u306e\u30b3\u30a2\u3092\u901a\u904e\u3057\u307e\u3059<\/td>\n<td>\u63a5\u5730\u6545\u969c\u691c\u51fa\u304a\u3088\u3073\u654f\u611f\u306a\u6f0f\u308c\u6e2c\u5b9a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>CT\u3092\u63a5\u7d9a\u3059\u308b\u65b9\u6cd5\u3092\u793a\u30592\u3064\u306e\u91cd\u8981\u306a\u8981\u7d20\u304c\u3042\u308a\u307e\u3059\u3002\u4e8c\u6b21\u96fb\u6d41\u306e\u6bd4\u7387\u306f\u3001\u7279\u5b9a\u306e\u4e00\u6b21\u96fb\u6d41\u306b\u5bfe\u3057\u3066CT\u304c\u63d0\u4f9b\u3059\u308b\u96fb\u6d41\u306e\u91cf\u3092\u610f\u5473\u3057\u307e\u3059\uff08\u4f8b\u3048\u3070\u3001400\/5\u307e\u305f\u306f1,000\/1\uff09\u3002VA\u3067\u793a\u3055\u308c\u308b\u8ca0\u8377\u306f\u3001CT\u306e\u6027\u80fd\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u305a\u306b\u63a5\u7d9a\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u8ca0\u8377\uff08\u8a08\u6e2c\u304a\u3088\u3073\u30ea\u30ec\u30fc\uff09\u3092\u793a\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001CT\u304c\u6b63\u3057\u3044\u6bd4\u7387\u3067\u52d5\u4f5c\u3057\u3066\u3044\u3066\u3082\u3001\u4e0d\u9069\u5207\u306b\u8ca0\u8377\u304c\u304b\u304b\u308b\u3068\u3001\u6e2c\u5b9a\u5024\u306f\u6b63\u78ba\u3067\u306f\u306a\u304f\u306a\u308a\u307e\u3059\u3002.<\/p>\n<h2>\u7aef\u5b50\u3068\u6975\u6027\uff1aP1\u3001P2\u3001S1\u3001S2<\/h2>\n<p>CT\u7aef\u5b50\u306f\u3001\u6587\u5b57\u304c\u7406\u89e3\u3055\u308c\u308b\u3068\u3001\u914d\u7dda\u304c\u5e38\u306b\u660e\u78ba\u3067\u3042\u308b\u3068\u3044\u3046\u78ba\u7acb\u3055\u308c\u305f\u898f\u5247\u306b\u5f93\u3044\u307e\u3059\uff1a<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u7aef\u5b50<\/th>\n<th>\u610f\u5473<\/th>\n<th>\u63a5\u7d9a\u30eb\u30fc\u30eb<\/th>\n<\/tr>\n<tr>\n<td>P1<\/td>\n<td>\u4e00\u6b21\u3001\u6975\u6027\u304c\u30de\u30fc\u30af\u3055\u308c\u305f\u5074<\/td>\n<td>\u901a\u5e38\u3001\u96fb\u6e90\uff08\u5c0e\u4f53\u306e\u5165\u529b\u5074\uff09\u3092\u5411\u3044\u3066\u3044\u307e\u3059<\/td>\n<\/tr>\n<tr>\n<td>P2<\/td>\n<td>\u4e00\u6b21\u3001\u30de\u30fc\u30af\u3055\u308c\u3066\u3044\u306a\u3044\u5074<\/td>\n<td>\u8ca0\u8377\u3092\u5411\u3044\u3066\u3044\u307e\u3059<\/td>\n<\/tr>\n<tr>\n<td>S1<\/td>\n<td>\u4e8c\u6b21\u3001P1\u306b\u5bfe\u5fdc<\/td>\n<td>S1\u3068\u30de\u30fc\u30af\u3055\u308c\u305f\u6a5f\u5668\u5165\u529b\u306b\u63a5\u7d9a\u3057\u307e\u3059\uff08\u307e\u305f\u306f\u300c\u30e9\u30a4\u30f3\u300d\/\u6975\u6027\u5165\u529b\uff09<\/td>\n<\/tr>\n<tr>\n<td>S2<\/td>\n<td>\u4e8c\u6b21\u3001P2\u306b\u5bfe\u5fdc<\/td>\n<td>S2\u3068\u30de\u30fc\u30af\u3055\u308c\u305f\u6a5f\u5668\u5165\u529b\u306b\u63a5\u7d9a\u3059\u308b\u304b\u3001\u4e09\u76f8\u56de\u8def\u306e\u30b9\u30bf\u30fc\/\u5171\u901a\u70b9\u306b\u63a5\u7d9a\u3057\u307e\u3059<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6975\u6027\u30eb\u30fc\u30eb\u306f\u3001 commissioning failures \u306e\u4e3b\u8981\u306a\u539f\u56e0\u3067\u3059\u3002S1\u306f\u5e38\u306b\u6a5f\u5668\u306eS1\u5165\u529b\u3068\u4e00\u81f4\u3057\u3001P1\u306f\u96fb\u6e90\u3068\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u305f\u3081\u3001CT\u306e\u5411\u304d\u307e\u305f\u306fS1\u304b\u3089S2\u3078\u306e\u63a5\u7d9a\u304c\u5909\u66f4\u3055\u308c\u308b\u3068\u3001\u6e2c\u5b9a\u3055\u308c\u308b\u96fb\u6d41\u304c\u9006\u8ee2\u3057\u307e\u3059\u3002\u65b9\u5411\u306b\u654f\u611f\u306a\u4fdd\u8b77\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u8f38\u5165\u304c\u8f38\u51fa\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001K\u304a\u3088\u3073L\u3068\u3044\u3046\u30de\u30fc\u30af\u306f\u4e00\u90e8\u306e\u30e1\u30fc\u30ab\u30fc\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u539f\u5247\u306f\u540c\u3058\u3067\u3059\uff08K\u306fP1\u306b\u5bfe\u5fdc\u3057\u3001L\u306fP2\u306b\u5bfe\u5fdc\u3057\u307e\u3059\uff09\u3002\u3064\u307e\u308a\u3001\u540d\u677f\u304c\u914d\u7dda\u3092\u6307\u793a\u3057\u3001\u751f\u6d3b\u69d8\u5f0f\u3067\u306f\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11535\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/The-three-wiring-configurations-you-will-actually-use.webp\" alt=\"\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b3\u3064\u306e\u914d\u7dda\u69cb\u6210\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308b3\u3064\u306e\u914d\u7dda\u69cb\u6210<\/h2>\n<p>CT\u306e\u307b\u3068\u3093\u3069\u306e\u8a2d\u7f6e\u306f\u30013\u3064\u306e\u30bf\u30a4\u30d7\u306e\u69cb\u6210\u306b\u5206\u304b\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u5358\u4e00\u306e\u6a5f\u5668\u3068\u4f75\u7528\u3055\u308c\u308b1\u3064\u306eCT\u30021\u3064\u306eCT\u304c\u30e1\u30fc\u30bf\u30fc\u307e\u305f\u306f\u30bb\u30f3\u30b5\u30fc\u3068\u63a5\u7d9a\u3055\u308c\u3001S1\u306f\u6a5f\u5668\u306eS1\u306b\u63a5\u7d9a\u3055\u308c\u3001S2\u306f\u6a5f\u5668\u306eS2\u306b\u63a5\u7d9a\u3055\u308c\u3001\u4e8c\u6b21\u5074\u306f1\u304b\u6240\u3067\u63a5\u5730\u3055\u308c\u307e\u3059\uff08\u901a\u5e38\u306f\u6a5f\u5668\u30d1\u30cd\u30eb\u3067\uff09\u3002\u3053\u308c\u306f\u3001\u5c02\u7528\u30d5\u30a3\u30fc\u30c0\u30fc\u30d1\u30cd\u30eb\u307e\u305f\u306f\u30e2\u30fc\u30bf\u30fc\u96fb\u6d41\u76e3\u8996\u306e\u305f\u3081\u306e\u6a19\u6e96\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u3067\u3059\u3002\u4e09\u76f8\u3001\u56db\u7dda\u8a08\u6e2c\u306e\u5834\u5408\u306f\u3001\u540c\u3058\u624b\u9806\u304c3\u56de\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002.<\/li>\n<li>\u4e09\u76f8\u8a08\u6e2c\u304a\u3088\u3073\u4fdd\u8b77\u306e\u305f\u3081\u306eY\u69cb\u6210\u3067\u306e3\u3064\u306eCT\u306e\u4f7f\u7528\u3002\u3053\u3053\u3067\u306f\u3001\u3059\u3079\u3066\u306e3\u3064\u306eS1\u30ef\u30a4\u30e4\u30fc\u304c\u5bfe\u5fdc\u3059\u308b\u6a5f\u5668\u306e\u96fb\u6d41\u5165\u529b\u306b\u63a5\u7d9a\u3055\u308c\u3001\u3059\u3079\u3066\u306e3\u3064\u306eS2\u30ef\u30a4\u30e4\u30fc\u304c\u5358\u4e00\u306e\u30b9\u30bf\u30fc\u70b9\u306b\u63a5\u7d9a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30b9\u30bf\u30fc\u70b9\u306f\u3001\u4e8c\u6b21\u304c\u63a5\u5730\u3055\u308c\u308b\u70b9\u3067\u3059\u3002\u30b9\u30bf\u30fc\u69cb\u6210\u306f\u3001\u4e09\u76f8\u30a8\u30cd\u30eb\u30ae\u30fc\u30e1\u30fc\u30bf\u30fc\u304a\u3088\u3073\u96fb\u529b\u30e1\u30fc\u30bf\u30fc\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u69cb\u6210\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u3001\u76f8\u96fb\u6d41\u306e\u6b63\u78ba\u306a\u30b3\u30d4\u30fc\u3092\u63d0\u4f9b\u3057\u3001\u96fb\u6d41\u306e\u4e0d\u5747\u8861\u306e\u305f\u3081\u306e\u7d4c\u8def\u3082\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/li>\n<li>\u30b3\u30a2\u30d0\u30e9\u30f3\u30b9CT\u306f\u3001\u5730\u7d61\u6545\u969c\u691c\u51fa\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u3059\u3079\u3066\u306e\u4e09\u76f8\u5c0e\u4f53\uff08\u304a\u3088\u3073\u4e2d\u6027\u7dda\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5fdc\u3058\u3066\uff09\u306f\u30011\u3064\u306eCT\u30b3\u30a2\u3092\u901a\u904e\u3057\u307e\u3059\u3002\u901a\u5e38\u306e\u72b6\u614b\u3067\u306f\u3001\u96fb\u6d41\u306e\u30d9\u30af\u30c8\u30eb\u548c\u306f\u30bc\u30ed\u306b\u306a\u308a\u3001CT\u306e\u4e8c\u6b21\u5074\u306f\u30bc\u30ed\u3092\u8aad\u307f\u53d6\u308a\u307e\u3059\u3002\u5730\u7d61\u6545\u969c\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u96fb\u6d41\u306e\u4e00\u90e8\u304c\u4e2d\u6027\u7dda\u3067\u306f\u306a\u304f\u5730\u9762\u3092\u901a\u3063\u3066\u623b\u308a\u3001\u5730\u7d61\u30ea\u30ec\u30fc\u306b\u3088\u3063\u3066\u691c\u51fa\u3055\u308c\u308b\u6b8b\u7559\u4fe1\u53f7\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u306f\u914d\u7dda\u304c\u7c21\u7d20\u5316\u3055\u308c\u307e\u3059\uff08\u4e8c\u6b21\u5074\u306e\u30ef\u30a4\u30e4\u30fc\u306f\u30ea\u30ec\u30fc\u306b2\u672c\u306e\u307f\u63a5\u7d9a\u3055\u308c\u307e\u3059\uff09\u304c\u3001\u7279\u5b9a\u306e\u7269\u7406\u7684\u30eb\u30fc\u30eb\u3092\u9075\u5b88\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1a\u4ed6\u306e\u30ef\u30a4\u30e4\u30fc\u306f\u30b3\u30a2\u3092\u901a\u904e\u3067\u304d\u305a\u3001\u30b1\u30fc\u30d6\u30eb\u30b7\u30fc\u30eb\u30c9\u3084\u30a2\u30fc\u30de\u30fc\u304c\u6b8b\u7559\u96fb\u6d41\u3092\u6253\u3061\u6d88\u3059\u4e26\u884c\u7d4c\u8def\u3092\u4f5c\u6210\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002.<\/li>\n<\/ul>\n<p>\u540c\u3058CT\u304c\u30e1\u30fc\u30bf\u30fc\u3068\u4fdd\u8b77\u30ea\u30ec\u30fc\u306e\u4e21\u65b9\u306b\u30c7\u30fc\u30bf\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u30012\u3064\u306e\u8ca0\u8377\u306f\u76f4\u5217\u306b\u914d\u7dda\u3055\u308c\u307e\u3059\uff08\u30e1\u30fc\u30bf\u30fc\u304c\u6700\u521d\u3001\u305d\u306e\u5f8c\u30ea\u30ec\u30fc\u3001\u307e\u305f\u306fCT\u306b\u8907\u6570\u306e\u4e8c\u6b21\u5074\u304c\u3042\u308b\u5834\u5408\u306f\u4ee3\u66ff\u30b3\u30a2\u3092\u4f7f\u7528\uff09\u3057\u3001\u4e26\u5217\u307e\u305f\u306f\u672a\u4f7f\u7528\u306e\u30b3\u30a2\u3067\u63a5\u7d9a\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u6b8b\u7559\u63a5\u7d9a\u306e\u80cc\u5f8c\u306b\u3042\u308b\u4fdd\u8b77\u54f2\u5b66\u306f\u3001\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/earth-fault-protection-basics\/\">\u63a5\u5730\u6545\u969c\u4fdd\u8b77\u306e\u57fa\u672c<\/a> \u30ac\u30a4\u30c9\u3067\u3055\u3089\u306b\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2>CT\u63a5\u7d9a\u56f3\u3001\u8aac\u660e<\/h2>\n<p>CT\u914d\u7dda\u30b9\u30ad\u30fc\u30de\u306f\u3001\u4e00\u6b21\u5074\u304b\u3089\u59cb\u307e\u308a\u3001\u6a5f\u5668\u3067\u7d42\u308f\u308b\u3088\u3046\u306b\u8aad\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u56f3\u3067\u793a\u3055\u308c\u305f\u4e09\u76f8\u30e1\u30fc\u30bf\u30fc\u8a2d\u7f6e\u306e\u4f8b\u3067\u3059\uff1a<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u304b\u3089<\/th>\n<th>\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b<\/th>\n<th>\u5c0e\u4f53<\/th>\n<\/tr>\n<tr>\n<td>\u76f8A\u5c0e\u4f53\uff08\u30bd\u30fc\u30b9\u5074\uff09<\/td>\n<td>CT-A P1<\/td>\n<td>\u4e00\u6b21\u56de\u8def \u2014 CT\u914d\u7dda\u3067\u306f\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td>CT-A S1<\/td>\n<td>\u30e1\u30fc\u30bf\u30fc\u96fb\u6d41\u5165\u529b IA (S1)<\/td>\n<td>5-4 mm\u00b2 \u9285\u3001600 V \u5b9a\u683c<\/td>\n<\/tr>\n<tr>\n<td>CT-A S2<\/td>\n<td>\u30b9\u30bf\u30fc\u30dd\u30a4\u30f3\u30c8<\/td>\n<td>S1\u3068\u540c\u3058\u30b5\u30a4\u30ba<\/td>\n<\/tr>\n<tr>\n<td>CT-B S1<\/td>\n<td>\u30e1\u30fc\u30bf\u30fc\u96fb\u6d41\u5165\u529b IB (S1)<\/td>\n<td>\u540c\u3058\u30b5\u30a4\u30ba<\/td>\n<\/tr>\n<tr>\n<td>CT-B S2<\/td>\n<td>\u30b9\u30bf\u30fc\u30dd\u30a4\u30f3\u30c8<\/td>\n<td>\u540c\u3058\u30b5\u30a4\u30ba<\/td>\n<\/tr>\n<tr>\n<td>CT-C S1<\/td>\n<td>\u30e1\u30fc\u30bf\u30fc\u96fb\u6d41\u5165\u529b IC (S1)<\/td>\n<td>\u540c\u3058\u30b5\u30a4\u30ba<\/td>\n<\/tr>\n<tr>\n<td>CT-C S2<\/td>\n<td>\u30b9\u30bf\u30fc\u30dd\u30a4\u30f3\u30c8<\/td>\n<td>\u540c\u3058\u30b5\u30a4\u30ba<\/td>\n<\/tr>\n<tr>\n<td>\u30b9\u30bf\u30fc\u30dd\u30a4\u30f3\u30c8<\/td>\n<td>\u63a5\u5730\uff081\u70b9\u306e\u307f\uff09<\/td>\n<td>\u5730\u5143\u306e\u898f\u5247\u306b\u5f93\u3063\u305f\u63a5\u5730\u5c0e\u4f53<\/td>\n<\/tr>\n<tr>\n<td>\u5404S1\/S2\u30da\u30a2<\/td>\n<td>\u77ed\u7d61\/\u30c6\u30b9\u30c8\u7aef\u5b50\u30d6\u30ed\u30c3\u30af<\/td>\n<td>CT\u3068\u8a08\u6e2c\u5668\u306e\u9593\u306b\u8a2d\u7f6e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u4f9b\u7d66\u3055\u308c\u305f\u914d\u7dda\u56f3\u304c\u3042\u308b\u5834\u5408\u3001\u305d\u308c\u3092\u4e3b\u8981\u306a\u30bd\u30fc\u30b9\u6587\u66f8\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u6700\u7d42\u6c7a\u5b9a\u3059\u308b\u524d\u306b\u3001\u6b21\u306e3\u3064\u306e\u898f\u5247\u3092\u4f7f\u7528\u3057\u3066\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff1aS1\u3068S1\u306e\u30da\u30a2\u30ea\u30f3\u30b0\u306e\u4f7f\u7528\u3001\u5358\u4e00\u306e\u63a5\u5730\u30dd\u30a4\u30f3\u30c8\u306e\u4f7f\u7528\u3001\u304a\u3088\u3073\u56de\u8def\u5185\u306e\u77ed\u7d61\u6a5f\u69cb\u306e\u5b58\u5728\u3002\u3053\u308c\u3089\u306e3\u3064\u306e\u5074\u9762\u306b\u304a\u3051\u308b\u4e0d\u4e00\u81f4\u306f\u3001\u4e0d\u9069\u5207\u306a\u8a66\u904b\u8ee2\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u5b89\u5168\u3067\u306a\u3044\u6761\u4ef6\u3092\u751f\u3058\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h2>\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\uff1a\u96fb\u6d41\u5909\u5727\u5668\u306e\u914d\u7dda\u65b9\u6cd5<\/h2>\n<ol>\n<li>\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001CT\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3057\u3001\u8a08\u6e2c\u5668\u306e\u8981\u6c42\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u6bd4\u7387\u3001\u7cbe\u5ea6\u8a55\u4fa1\u3001\u8ca0\u8377\uff08VA\uff09\u3001\u304a\u3088\u3073\u6975\u6027\u30de\u30fc\u30ad\u30f3\u30b0\u306e\u305f\u3081\u306b\u540d\u677f\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8a08\u6e2c\u5668\u306e\u5165\u529b\u5b9a\u683c\uff081 A\u307e\u305f\u306f5 A\uff09\u304cCT\u4e8c\u6b21\u5074\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u305c\u306a\u3089\u30015 A\u306eCT\u304c1 A\u306e\u5165\u529b\u306b\u63a5\u7d9a\u3055\u308c\u308b\u3068\u3001\u8a08\u6e2c\u5668\u306f5\u500d\u306e\u8aa4\u5dee\u3067\u8aad\u307f\u53d6\u308a\u3001\u4e0d\u6b63\u78ba\u306a\u7d50\u679c\u3092\u3082\u305f\u3089\u3057\u3001\u5165\u529b\u304c\u98fd\u548c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002.<\/li>\n<li>\u30c7\u30d0\u30a4\u30b9\u306f\u7d76\u7e01\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u305d\u306e\u5f8c\u3001\u6b7b\u72b6\u614b\u306e\u78ba\u8a8d\u304c\u884c\u308f\u308c\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u4e00\u6b21\u56de\u8def\u306f\u96fb\u6e90\u3092\u5207\u308a\u3001\u9069\u5207\u306a\u30ed\u30c3\u30af\u30a2\u30a6\u30c8\/\u30bf\u30b0\u30a2\u30a6\u30c8\u63aa\u7f6e\u304c\u9069\u7528\u3055\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u300c\u4e00\u6b21\u56de\u8def\u304c\u7d76\u7e01\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u4ed6\u306e\u30bd\u30fc\u30b9\u304b\u3089\u96fb\u529b\u304c\u4f9b\u7d66\u3055\u308c\u3066\u3044\u308b\u30e9\u30a4\u30d6CT\u4e8c\u6b21\u304c\u5b58\u5728\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308a\u3001\u3057\u305f\u304c\u3063\u3066\u3001\u3059\u3079\u3066\u306eCT\u56de\u8def\u306f\u4ed6\u306e\u8a3c\u660e\u304c\u3055\u308c\u308b\u307e\u3067\u30e9\u30a4\u30d6\u3067\u3042\u308b\u3068\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/li>\n<li>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u4e8c\u6b21\u56de\u8def\u3092\u30b7\u30e7\u30fc\u30c8\u3055\u305b\u308b\u3053\u3068\u3067\u3059\u3002\u30c6\u30b9\u30c8\u7aef\u5b50\u30d6\u30ed\u30c3\u30af\u306e\u30b7\u30e7\u30fc\u30c8\u30ea\u30f3\u30af\u3092\u9589\u3058\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001S1\u3068S2\u3092\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306b\u9069\u5207\u306a\u30b7\u30e7\u30fc\u30c8\u30c7\u30d0\u30a4\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u624b\u9806\u306f\u3001CT\u306e\u6545\u969c\u306e\u5371\u967a\u3092\u6392\u9664\u3057\u307e\u3059\u3002.<\/li>\n<li>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001P1\u304a\u3088\u3073P2\u306e\u4e00\u6b21\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u3001S2\u304a\u3088\u3073S1\u306e\u4e8c\u6b21\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u3092\u542b\u3080\u6975\u6027\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u3067\u3059\u3002\u4e00\u6b21\u306e\u5411\u304d\uff08P1\u304c\u30bd\u30fc\u30b9\u3092\u6307\u3057\u3066\u3044\u308b\u5834\u6240\uff09\u3068\u7269\u7406\u7684\u914d\u7f6e\u304c\u56f3\u9762\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/li>\n<li>\u9069\u5207\u306a\u4e8c\u6b21\u30b1\u30fc\u30d6\u30eb\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u8ca0\u8377\u304a\u3088\u3073\u914d\u7dda\u9577\u306b\u9069\u3057\u305f\u30b5\u30a4\u30ba\u306e\u9285\u5c0e\u4f53\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\uff08\u6a19\u6e962.5 mm\u00b2\u3001600\u30dc\u30eb\u30c8\uff09\u3001\u3059\u3079\u3066\u306e\u4e09\u76f8\u3092\u9054\u6210\u3057\u306a\u304c\u3089\u30b7\u30fc\u30b9\u5185\u3067\u96fb\u529b\u5c0e\u4f53\u3092\u8d70\u3089\u305b\u306a\u3044\u3053\u3068\u3092\u76ee\u6307\u3057\u307e\u3059\u3002.<\/li>\n<li>\u7d42\u7aef\u306f\u3001S1\u304c\u6a5f\u5668\u306eS1\uff08\u6975\u6027\uff09\u5165\u529b\u306b\u3042\u308a\u3001S2\u304c\u4e8c\u6b21\u5165\u529b\u306b\u3042\u308b\u72b6\u614b\u3067\u6a5f\u5668\u3067\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u63a5\u5730\u306f\u901a\u5e38\u3001\u6a5f\u5668\u307e\u305f\u306f\u30ea\u30ec\u30fc\u30d1\u30cd\u30eb\u306e\u3044\u305a\u308c\u304b\u306e\u30dd\u30a4\u30f3\u30c8\u3067\u306e\u307f\u884c\u308f\u308c\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n<li>\u7aef\u5b50\u306e\u30c8\u30eb\u30af\u8a2d\u5b9a\u3092\u88fd\u9020\u5143\u306b\u5f93\u3063\u3066\u78ba\u8a8d\u3057\u3001\u6bd4\u7387\u30e9\u30d9\u30eb\u3092\u542b\u3080\u30d5\u30a7\u30fc\u30ba\u306b\u30e9\u30d9\u30eb\u3092\u9069\u7528\u3057\u307e\u3059\u3002.<\/li>\n<li>\u30c6\u30b9\u30c8\u304c\u958b\u59cb\u3055\u308c\u308b\u524d\u306b\u30b7\u30e7\u30fc\u30c8\u30ea\u30f3\u30af\u3092\u53d6\u308a\u5916\u3057\u3001\u6bd4\u7387\u3068\u6975\u6027\u306e\u78ba\u8a8d\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u30a8\u30cd\u30eb\u30ae\u30fc\u4f9b\u7d66\u56de\u8def\u3092\u30aa\u30f3\u306b\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u4e09\u76f8\u304c\u73fe\u5728\u306e\u8aad\u307f\u53d6\u308a\u3067\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u3067\u56de\u8def\u304c\u6a5f\u5668\u3067\u6b63\u3057\u304f\u8aad\u307f\u53d6\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002.<\/li>\n<\/ol>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11536\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/Step-by-step-how-to-wire-a-current-transformer.webp\" alt=\"\u30b9\u30c6\u30c3\u30d7\u30d0\u30a4\u30b9\u30c6\u30c3\u30d7\uff1a\u96fb\u6d41\u5909\u5727\u5668\u306e\u914d\u7dda\u65b9\u6cd5\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\u8ca0\u8377\u3068\u30b1\u30fc\u30d6\u30eb\u30b5\u30a4\u30ba\uff1a\u307b\u3068\u3093\u3069\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30e9\u30fc\u304c\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u8a08\u7b97<\/h2>\n<p>\u96fb\u6d41\u5909\u5727\u5668\uff08CT\uff09\u306f\u3001\u5b9a\u683c\u8ca0\u8377\u3092\u8d85\u3048\u308b\u3068\u6b63\u78ba\u3067\u306f\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u8ca0\u8377\u306e\u5408\u8a08\u306b\u306f\u3001\u4e8c\u6b21\u306b\u63a5\u7d9a\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30c7\u30d0\u30a4\u30b9\u3068\u4e8c\u6b21\u914d\u7dda\u306e\u62b5\u6297\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n<ul>\n<li>\u6a5f\u5668\u8ca0\u8377\uff1a\u3053\u308c\u306f\u3001\u30e1\u30fc\u30bf\u30fc\u307e\u305f\u306f\u30ea\u30ec\u30fc\u306e\u88fd\u9020\u5143\u306b\u3088\u3063\u3066\u6307\u5b9a\u3055\u308c\u305fVA\u8ca0\u8377\uff08\u307e\u305f\u306f\u30aa\u30fc\u30e0\uff09\u3067\u3059\u3002\u6a5f\u5668\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u306f\u6700\u65b0\u306e\u96fb\u5b50\u6a5f\u5668\u3067\u306f\u96fb\u6d41\u5165\u529b\u3042\u305f\u308a0.2-1 VA\u306e\u7bc4\u56f2\u3067\u3042\u308a\u3001\u53e4\u3044\u96fb\u6c17\u6a5f\u68b0\u5f0f\u30ea\u30ec\u30fc\u3067\u306f\u3088\u308a\u9ad8\u3044\u8ca0\u8377\u306b\u306a\u308a\u307e\u3059\u3002.<\/li>\n<li>\u914d\u7dda\u8ca0\u8377\uff1a\u914d\u7dda\u62b5\u6297\u306f\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a2 x \u7247\u9053\u9577\u3055 x \u30e1\u30fc\u30c8\u30eb\u3042\u305f\u308a\u306e\u62b5\u6297\uff08\u305f\u3068\u3048\u3070\u30012.5 mm\u00b2\u306e\u9285\u914d\u7dda\u306e\u62b5\u6297\u306f\u7d047.4\u30aa\u30fc\u30e0\/km\uff09\u3001\u4e8c\u6b21\u96fb\u6d41\u306e\u4e8c\u4e57\u3092\u639b\u3051\u307e\u3059\u3002\u914d\u7dda\u9577\u306b\u3088\u3063\u3066\u306f\u3001\u914d\u7dda\u8ca0\u8377\u306e\u305f\u3081\u306b\u6a5f\u5668\u8ca0\u8377\u304c\u8d85\u904e\u3059\u308b\u3053\u3068\u306f\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002.<\/li>\n<li>\u63a5\u7d9a\u8ca0\u8377\uff1a\u7aef\u5b50\u304a\u3088\u3073\u30c6\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u9593\u306e\u62b5\u6297\u306f\u4e00\u822c\u7684\u306b\u5c0f\u3055\u3044\u3067\u3059\u304c\u3001\u914d\u7dda\u306e\u5408\u8a08\u304cCT\u8ca0\u8377\u306b\u8fd1\u3044\u5834\u5408\u3001\u3053\u306e\u5024\u3092\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<\/ul>\n<p>CT\u306e\u5b9a\u683c\u3092\u8d85\u3048\u308b\u7dcf\u8ca0\u8377\u304c\u3042\u308b\u5834\u5408\u3001\u6b63\u78ba\u306a\u8aad\u307f\u53d6\u308a\u3092\u63d0\u4f9b\u3067\u304d\u305a\u3001\u6545\u969c\u96fb\u6d41\u6642\u306b\u98fd\u548c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059 - \u3053\u308c\u306f\u4fdd\u8b77\u304c\u6700\u3082\u5fc5\u8981\u306a\u6642\u3067\u3059\u3002\u53ef\u80fd\u306a\u5bfe\u7b56\u306b\u306f\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u9577\u3055\u3092\u77ed\u304f\u3059\u308b\u3053\u3068\u3001\u3088\u308a\u5927\u304d\u306a\u5c0e\u4f53\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3001\u4f4e\u8ca0\u8377\u306e\u6a5f\u5668\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3001\u307e\u305f\u306f\u3088\u308a\u9ad8\u3044VA\u5b9a\u683c\u306eCT\u3092\u8cfc\u5165\u3059\u308b\u3053\u3068\u304c\u542b\u307e\u308c\u307e\u3059\u3002.<\/p>\n<p>\u7cbe\u5ea6\u30af\u30e9\u30b9\u81ea\u4f53 - \u8a08\u6e2c\u7528\u306e0.5\u304a\u3088\u30731\u3001\u4fdd\u8b77\u7528\u306e5P\u304a\u3088\u307310P - \u306f\u3001\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/transformer-accuracy-classes-explained\/\">\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u7cbe\u5ea6\u30af\u30e9\u30b9\u30ac\u30a4\u30c9<\/a>.<\/p>\n<p>\u305d\u3057\u3066\u3001\u8ca0\u8377\u96fb\u6d41\u3068\u6545\u969c\u30ec\u30d9\u30eb\u304b\u3089\u6700\u7d42\u7684\u306a\u9298\u677f\u9078\u629e\u307e\u3067\u3001\u7279\u5b9a\u306e\u8a2d\u7f6e\u306b\u5bfe\u3059\u308b\u6bd4\u7387\u9078\u629e\u30ed\u30b8\u30c3\u30af\u306f\u3001\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/current-transformer-ratio-selection\/\">\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u30d5\u30a9\u30fc\u30de\u30fc\u6bd4\u7387\u9078\u629e<\/a> \u8a18\u4e8b\u306b\u8981\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2>\u30c6\u30b9\u30c8\u3068\u691c\u8a3c<\/h2>\n<p>CT\u304c\u8ca0\u8377\u3092\u904b\u3076\u524d\u306b\u6b63\u3057\u304f\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u30013\u3064\u306e\u30c6\u30b9\u30c8\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\uff1a<\/p>\n<table>\n<tbody>\n<tr>\n<th>\u30c6\u30b9\u30c8<\/th>\n<th>\u305d\u308c\u304c\u8a3c\u660e\u3059\u308b\u3082\u306e<\/th>\n<th>\u65b9\u6cd5<\/th>\n<\/tr>\n<tr>\n<td>\u6bd4\u7387\u30c6\u30b9\u30c8<\/td>\n<td>CT\u306f\u3001\u65e2\u77e5\u306e\u4e00\u6b21\u96fb\u6d41\u306b\u5bfe\u3057\u3066\u671f\u5f85\u3055\u308c\u308b\u4e8c\u6b21\u96fb\u6d41\u3092\u751f\u6210\u3057\u307e\u3059<\/td>\n<td>\u5b9a\u683c\u96fb\u6d41\u306e\u4e00\u90e8\u3067\u306e\u4e00\u6b21\u6ce8\u5165\u3001\u307e\u305f\u306f\u5927\u304d\u306aCT\u7528\u306e\u4e8c\u6b21\u96fb\u5727\u65b9\u5f0f<\/td>\n<\/tr>\n<tr>\n<td>\u6975\u6027\u30c6\u30b9\u30c8<\/td>\n<td>S1\u306f\u771f\u306bP1\u306b\u5bfe\u5fdc\u3057\u3001\u6a5f\u5668\u306f\u524d\u65b9\u96fb\u529b\u3092\u6b63\u3057\u304f\u8aad\u307f\u53d6\u308a\u307e\u3059<\/td>\n<td>\u6975\u6027\u611f\u5ea6\u306e\u3042\u308b\u6a5f\u5668\u3092\u7528\u3044\u305fDC\u30d1\u30eb\u30b9\u307e\u305f\u306f\u4e00\u6b21\u6ce8\u5165<\/td>\n<\/tr>\n<tr>\n<td>\u7d76\u7e01\u3068\u9023\u7d9a\u6027<\/td>\n<td>\u77ed\u7d61\u307e\u305f\u306f\u958b\u653e\u3055\u308c\u305f\u4e8c\u6b21\u5c0e\u4f53\u304c\u306a\u304f\u3001\u5730\u9762\u3078\u306e\u9069\u5207\u306a\u7d76\u7e01\u304c\u3042\u308b\u3053\u3068<\/td>\n<td>\u901a\u96fb\u524d\u306e\u7d76\u7e01\u62b5\u6297\u3068\u9023\u7d9a\u6027\u306e\u30c1\u30a7\u30c3\u30af<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u901a\u96fb\u5f8c\u306e\u78ba\u8a8d\u3082\u540c\u69d8\u306b\u91cd\u8981\u3067\u3059\u3002CT\u306e\u8aad\u307f\u53d6\u308a\u5024\u3092\u4e00\u6b21\u5074\u306e\u30af\u30e9\u30f3\u30d7\u30e1\u30fc\u30bf\u30fc\u306e\u8aad\u307f\u53d6\u308a\u5024\u3068\u6bd4\u8f03\u3057\u3001\u3059\u3079\u3066\u306e\u4e09\u76f8\u3067\u8aad\u307f\u53d6\u308a\u5024\u304c\u4e00\u8cab\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u5730\u7d61\u56de\u8def\u304c\u5065\u5168\u306a\u30d5\u30a3\u30fc\u30c0\u30fc\u3067\u30bc\u30ed\u306e\u6b8b\u7559\u5024\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002CT\u304c\u4fdd\u8b77\u30b9\u30ad\u30fc\u30e0\u306e\u4e00\u90e8\u3067\u3042\u308b\u5834\u5408\u3001\u305d\u306e\u8abf\u6574\u3068\u305d\u308c\u304c\u4f9d\u5b58\u3059\u308b\u63a5\u5730\u57fa\u6e96\u304c\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/transformer-grounding-basics\/\">\u30c8\u30e9\u30f3\u30b9\u63a5\u5730\u306e\u57fa\u672c<\/a> \u30ac\u30a4\u30c9\u3067\u3055\u3089\u306b\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h2>\u5b89\u5168\u898f\u5247\u3068\u6a5f\u5668\u3092\u640d\u50b7\u3055\u305b\u308b\u8aa4\u308a<\/h2>\n<p>\u96fb\u6d41\u5909\u5727\u5668\u306e\u4e8c\u6b21\u5074\u306f\u3001\u4f55\u304b\u304c\u9593\u9055\u3046\u307e\u3067\u4f4e\u96fb\u5727\u3067\u5c11\u91cf\u306e\u96fb\u6d41\u3057\u304b\u6d41\u308c\u307e\u305b\u3093\u3002\u4ee5\u4e0b\u306f\u96fb\u6d41\u5909\u5727\u5668\u56de\u8def\u3092\u6271\u3046\u305f\u3081\u306e\u5fc5\u9808\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u3059\uff1a<\/p>\n<ul>\n<li>\u4e00\u6b21\u56de\u8def\u304c\u901a\u96fb\u3057\u3066\u3044\u308b\u9593\u306b\u96fb\u6d41\u5909\u5727\u5668\u56de\u8def\u306e\u4e8c\u6b21\u5074\u3092\u958b\u3051\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u4e8c\u6b21\u7aef\u5b50\u304c\u958b\u3044\u3066\u3044\u308b\u3068\u3001\u96fb\u6d41\u5909\u5727\u5668\u306f\u975e\u5e38\u306b\u9ad8\u3044\u96fb\u5727\uff08\u6570\u767e\u307e\u305f\u306f\u6570\u5343\u30dc\u30eb\u30c8\uff09\u3092\u751f\u6210\u3057\u3088\u3046\u3068\u3057\u3001\u6975\u7aef\u306a\u904e\u96fb\u5727\u72b6\u6cc1\u3001\u30b3\u30a2\u306e\u98fd\u548c\u3001\u904e\u71b1\u3001\u3055\u3089\u306b\u306f\u7206\u767a\u3084\u706b\u707d\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u96fb\u6d41\u5909\u5727\u5668\u306e\u4e8c\u6b21\u5074\u306f\u4e00\u7b87\u6240\u3067\u306e\u307f\u63a5\u5730\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e8c\u7b87\u6240\u3067\u63a5\u5730\u3059\u308b\u3068\u3001\u4e0d\u8981\u306a\u96fb\u6d41\u304c\u63a5\u5730\u3092\u901a\u3058\u3066\u5faa\u74b0\u3057\u3001\u4e0d\u6b63\u78ba\u306a\u6e2c\u5b9a\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u4fdd\u8b77\u6a5f\u5668\u306e\u4e0d\u5fc5\u8981\u306a\u30c8\u30ea\u30c3\u30d7\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u77ed\u7d61\u578b\u306e\u30c6\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u3067\u306a\u3044\u30b9\u30a4\u30c3\u30c1\u3084\u30d2\u30e5\u30fc\u30ba\u3092\u96fb\u6d41\u5909\u5727\u5668\u56de\u8def\u306b\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u306f\u907f\u3051\u3066\u304f\u3060\u3055\u3044\u3002\u6a19\u6e96\u56de\u8def\u306f\u958b\u653e\u72b6\u614b\u3067\u5931\u6557\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u958b\u653e\u56de\u8def\u3068\u540c\u3058\u72b6\u614b\u3092\u4f5c\u308a\u51fa\u3057\u307e\u3059\u3002.<\/li>\n<li>\u4e88\u5099\u306e\u96fb\u6d41\u5909\u5727\u5668\u30b3\u30a2\u3092\u958b\u653e\u3057\u305f\u307e\u307e\u306b\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u672a\u4f7f\u7528\u306e\u30b3\u30a4\u30eb\u3092\u77ed\u7d61\u3057\u3001\u56f3\u9762\u306b\u8a18\u8f09\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3055\u3082\u306a\u3051\u308c\u3070\u3001\u5c06\u6765\u306e\u6280\u8853\u8005\u304c\u30b5\u30fc\u30d3\u30b9\u62c5\u5f53\u8005\u306b\u305d\u308c\u3089\u304c\u958b\u653e\u56de\u8def\u3067\u3042\u308b\u3068\u8aa4\u89e3\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/li>\n<li>\u5404\u63a5\u7d9a\u3067\u9069\u5207\u306a\u6975\u6027\u3092\u5b88\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002S1\u304b\u3089S1\u3001P1\u304b\u3089\u30bd\u30fc\u30b9\u3078\u306e\u63a5\u7d9a\u306f\u3001\u5f8c\u3067\u5909\u66f4\u3067\u304d\u308b\u4efb\u610f\u306e\u898f\u5247\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/li>\n<li>\u96fb\u6d41\u5909\u5727\u5668\u306e\u914d\u7dda\u3092\u96fb\u529b\u304a\u3088\u3073\u53ef\u5909\u5468\u6ce2\u6570\u30c9\u30e9\u30a4\u30d6\uff08VFD\uff09\u30b1\u30fc\u30d6\u30eb\u304b\u3089\u9060\u3056\u3051\u3001\u30b3\u30a2\u30d0\u30e9\u30f3\u30b9\u30b9\u30ad\u30fc\u30e0\u306e\u5c0e\u4f53\u306e\u4e00\u90e8\u3060\u3051\u3092\u901a\u904e\u3055\u305b\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ul>\n<p>\u8a18\u61b6\u3057\u3066\u304a\u304f\u3079\u304d\u4ed6\u306e2\u3064\u306e\u5b9f\u7528\u7684\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306f\u3001\u6a5f\u5668\u306e\u5165\u529b\u5b9a\u683c\u304c\u30c8\u30e9\u30f3\u30b9\u306e\u4e8c\u6b21\u5b9a\u683c\uff081A\u307e\u305f\u306f5A\u306e\u3044\u305a\u308c\u304b\uff09\u3068\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u63a5\u7d9a\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u4e00\u6b21\u5c0e\u4f53\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u4e00\u65b9\u5411\u306b\u306e\u307f\u901a\u904e\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u30d0\u30fc\u3084\u30b1\u30fc\u30d6\u30eb\u3092\u30b3\u30a2\u306e\u9006\u65b9\u5411\u306b\u901a\u3059\u3068\u3001\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306e\u6709\u52b9\u6975\u6027\u304c\u9006\u8ee2\u3057\u307e\u3059\u3002\u30ad\u30e3\u30ea\u30d6\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u306b\u53d6\u308a\u5916\u3059\u5fc5\u8981\u304c\u3042\u308b\u30e1\u30fc\u30bf\u30fc\u306e\u5834\u5408\u3001\u30c6\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u306f\u3001\u6a5f\u5668\u304c\u30d7\u30e9\u30b0\u3092\u629c\u304b\u308c\u305f\u3068\u304d\u306b\u81ea\u52d5\u7684\u306bCT\u3092\u77ed\u7d61\u3059\u308b\u30bf\u30a4\u30d7\u3067\u3042\u308b\u3079\u304d\u3067\u3059\u3002\u30e1\u30fc\u30bf\u30fc\u304a\u3088\u3073\u8a08\u5668\u30c8\u30e9\u30f3\u30b9\u306e\u5468\u308a\u306e\u914d\u7dda\u6163\u884c\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u305f\u3061\u306e <a href=\"\/ja\/blog\/current-transformer-installation-guide\/\">\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u8a2d\u7f6e\u30ac\u30a4\u30c9<\/a>.<\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3>\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306e\u6b20\u70b9\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u3044\u304f\u3064\u304b\u306e\u6b20\u70b9\u304c\u3042\u308a\u307e\u3059\u3002\u958b\u56de\u8def\u306e\u4e8c\u6b21\u5074\u306f\u5371\u967a\u3067\u3042\u308a\u3001\u6df1\u523b\u306a\u602a\u6211\u306e\u53ef\u80fd\u6027\u3092\u751f\u3058\u3055\u305b\u307e\u3059\u3002\u63a5\u7d9a\u8ca0\u8377\u306e\u8a08\u7b97\u306f\u6b63\u78ba\u306b\u884c\u308f\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u4e0d\u6b63\u78ba\u306a\u8aad\u307f\u53d6\u308a\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u4e0d\u6b63\u78ba\u306a\u6975\u6027\u306f\u3001\u4e0d\u6b63\u78ba\u306a\u8aad\u307f\u53d6\u308a\u3060\u3051\u3067\u306a\u304f\u3001\u4fdd\u8b77\u88c5\u7f6e\u306e\u6545\u969c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002CT\u306b\u3088\u3063\u3066\u5c0e\u5165\u3055\u308c\u308b\u5c0f\u3055\u306a\u4f4d\u76f8\u30b7\u30d5\u30c8\u306f\u3001\u6e2c\u5b9a\u306b\u308f\u305a\u304b\u306a\u4e0d\u6b63\u78ba\u3055\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002\u8ffd\u52a0\u306e\u8cbb\u7528\u3068\u30d1\u30cd\u30eb\u30b9\u30da\u30fc\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u9069\u5207\u306a\u30b5\u30a4\u30ba\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u3001CT\u306f\u6545\u969c\u72b6\u614b\u3067\u98fd\u548c\u3057\u307e\u3059\u3002\u6700\u65b0\u306e\u96fb\u5b50\u30e1\u30fc\u30bf\u30fc\u306f\u3001\u3053\u308c\u3089\u306e\u6b20\u70b9\u306b\u95a2\u9023\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3057\u307e\u3059\u304c\u3001\u3059\u3079\u3066\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/p>\n<h3>\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306f\u3069\u306e\u3088\u3046\u306b\u914d\u7dda\u3055\u308c\u307e\u3059\u304b\uff1f<\/h3>\n<p>CT\u3092\u901a\u3057\u3066\u4e00\u6b21\u5c0e\u4f53\u3092\u63a5\u7d9a\u3059\u308b\u306b\u306f\u3001P1\uff08\u96fb\u6e90\u5074\uff09\u3068P2\uff08\u8ca0\u8377\u5074\uff09\u304c\u3042\u308a\u3001\u307e\u305f\u306f\u30e9\u30a4\u30f3\u306f\u30d0\u30fc\/\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u901a\u904e\u3057\u307e\u3059\u3002\u4e8c\u6b21\u5074\u306fS1\u3068S2\u3068\u306a\u308a\u3001S1\u306fP1\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002S1\u3068S2\u306f\u3001\u5358\u4e00\u306eCT\u306e\u5834\u5408\u306f\u30e1\u30fc\u30bf\u30fc\u3001\u30ea\u30ec\u30fc\u3001\u307e\u305f\u306f\u30c8\u30e9\u30f3\u30b9\u30c7\u30e5\u30fc\u30b5\u30fc\u306b\u76f4\u63a5\u63a5\u7d9a\u3055\u308c\u308b\u304b\u3001\u4e09\u76f8\u30e1\u30fc\u30bf\u30fc\u7528\u306b\u30b9\u30bf\u30fc\u69cb\u6210\u3067\u63a5\u7d9a\u3055\u308c\u307e\u3059\uff08\u30e1\u30fc\u30bf\u30fc\u306b\u4e09\u3064\u306eS1\u3001\u63a5\u5730\u3055\u308c\u305f\u30b9\u30bf\u30fc\u70b9\u306b\u7d50\u5408\u3055\u308c\u305f\u4e09\u3064\u306eS2\u306a\u3069\uff09\u3002CT\u3068\u6a5f\u5668\u306e\u63a5\u5408\u90e8\u306b\u306f\u77ed\u7d61\/\u30c6\u30b9\u30c8\u7aef\u5b50\u30d6\u30ed\u30c3\u30af\u304c\u53d6\u308a\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n<h3>\u30c8\u30e9\u30f3\u30b9\u306e\u3069\u306e\u30ef\u30a4\u30e4\u30fc\u304c\u3069\u3053\u306b\u884c\u304f\u304b\u306f\u91cd\u8981\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u3059\u3079\u3066\u306e\u30c8\u30e9\u30f3\u30b9\u306b\u3068\u3063\u3066\u91cd\u8981\u3067\u3059\u304c\u3001CT\u306b\u306f\u7279\u6709\u306e\u8981\u4ef6\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30ea\u30fc\u30c9\u304c\u7279\u5b9a\u306e\u6975\u6027\uff08\u3059\u306a\u308f\u3061\u3001S1\u304cP1\u306b\u76f8\u95a2\u3059\u308b\uff09\u3092\u6301\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002\u3053\u308c\u3089\u306e2\u3064\u306e\u30ea\u30fc\u30c9\u3092\u9006\u306b\u3059\u308b\u3068\u3001\u96fb\u6d41\u304c\u9006\u65b9\u5411\u306b\u6d41\u308c\u3001\u4e0d\u6b63\u78ba\u306a\u96fb\u529b\u8aad\u307f\u53d6\u308a\u3068\u4fdd\u8b77\u88c5\u7f6e\u306e\u6545\u969c\u306e\u53ef\u80fd\u6027\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u4e00\u6b21\u304a\u3088\u3073\u4e8c\u6b21\u30ea\u30fc\u30c9\u306b\u95a2\u3057\u3066\u4e21\u65b9\u306e\u30c8\u30e9\u30f3\u30b9\u306b\u9069\u7528\u3055\u308c\u307e\u3059\u3002.<\/p>\n<h3>\u96fb\u6c17\u30c8\u30e9\u30f3\u30b9\u3092\u3069\u306e\u3088\u3046\u306b\u63a5\u7d9a\u3057\u307e\u3059\u304b\uff1f<\/h3>\n<p>CT\u306e\u3088\u3046\u306a\u8a08\u5668\u30c8\u30e9\u30f3\u30b9\u306e\u5834\u5408\uff1a\u6bd4\u7387\u3068\u8ca0\u8377\u3092\u78ba\u8a8d\u3057\u3001\u30c8\u30e9\u30f3\u30b9\u3092\u9694\u96e2\u3057\u3066\u6b7b\u3093\u3067\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3001\u4e8c\u6b21\u5074\u3092\u77ed\u7d61\u3057\u3001\u3069\u306e\u30ea\u30fc\u30c9\u304cP1\u306b\u5bfe\u5fdc\u3057\u3001\u3069\u306e\u30ea\u30fc\u30c9\u304cS1\u306b\u5bfe\u5fdc\u3059\u308b\u304b\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002S1\u3068S2\u304c\u8a08\u5668\u306e\u305d\u308c\u305e\u308c\u306e\u5165\u529b\u306b\u63a5\u7d9a\u3055\u308c\u308b\u3088\u3046\u306b\u3001\u9069\u5207\u306a\u30b5\u30a4\u30ba\u306e\u4e8c\u6b21\u30b1\u30fc\u30d6\u30eb\u3092\u63a5\u7d9a\u3057\u30011\u70b9\u3067\u4e8c\u6b21\u5074\u3092\u63a5\u5730\u3057\u3001\u63a5\u7d9a\u3092\u30e9\u30d9\u30eb\u4ed8\u3051\u3057\u3066\u30c8\u30eb\u30af\u3092\u304b\u3051\u3001\u63a5\u5730\u3092\u5916\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u6700\u5f8c\u306b\u3001\u6975\u6027\u3068\u6bd4\u7387\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u65e2\u77e5\u306e\u6a19\u6e96\u3092\u30b7\u30b9\u30c6\u30e0\u306b\u6ce8\u5165\u3057\u307e\u3059\u3002\u96fb\u529b\u30c8\u30e9\u30f3\u30b9\u306e\u63a5\u7d9a\u30d7\u30ed\u30bb\u30b9\u306f\u3053\u306e\u624b\u9806\u3068\u306f\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u8ca0\u8377\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u524d\u306b\u3001\u500b\u4eba\u304c\u5b9a\u683c\u3001\u6975\u6027\u3001\u63a5\u5730\u3001\u304a\u3088\u3073\u30c6\u30b9\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<h2>\u53c2\u8003\u6587\u732e<\/h2>\n<ul>\n<li><a href=\"https:\/\/standards.ieee.org\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE \u2014 C57.13\u3001\u8a08\u5668\u30c8\u30e9\u30f3\u30b9\u306e\u6a19\u6e96\u8981\u4ef6<\/a><\/li>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">IEC \u2014 61869\u30b7\u30ea\u30fc\u30ba\u3001\u8a08\u5668\u30c8\u30e9\u30f3\u30b9<\/a><\/li>\n<li><a href=\"https:\/\/www.nfpa.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 \u56fd\u5bb6\u96fb\u6c17\u898f\u5247\uff08\u8a08\u5668\u30c8\u30e9\u30f3\u30b9\u56de\u8def\uff09<\/a><\/li>\n<li><a href=\"https:\/\/www.netaworld.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NETA \u2014 \u96fb\u529b\u6a5f\u5668\u306e\u53d7\u5165\u8a66\u9a13\u4ed5\u69d8<\/a><\/li>\n<\/ul>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306e\u8a2d\u7f6e\u306f\u91cd\u8981\u306a\u4f5c\u696d\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u91cd\u8981\u3067\u306a\u3044\u4f5c\u696d\u306e\u3088\u3046\u306b\u898b\u3048\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u306e\u6a5f\u80fd\u306f\u3001\u30ef\u30a4\u30e4\u30fc\u3092\u6d41\u308c\u308b\u4e00\u6b21\u96fb\u6d41\u306e\u91cf\u3092\u30e1\u30fc\u30bf\u30fc\u307e\u305f\u306f\u30ea\u30ec\u30fc\u306b\u3068\u3063\u3066\u5b89\u5168\u306a\u8aad\u307f\u53d6\u308a\u5024\u306b\u6e1b\u5c11\u3055\u305b\u308b\u3053\u3068\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u9577\u671f\u7684\u306b\u898b\u3066\u3053\u306e\u4f5c\u696d\u304c\u3069\u308c\u307b\u3069\u91cd\u8981\u3067\u3042\u308b\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u4e00\u6b21\u30ef\u30a4\u30e4\u30fc\uff08P1\uff09\u306b\u306f\u96fb\u6e90\u307e\u3067\u30ef\u30a4\u30e4\u30fc\u3092\u5f15\u304d\u3001\u4e8c\u6b21\u30ef\u30a4\u30e4\u30fc\uff08S1\uff09\u306f\u96fb\u6d41\u30c8\u30e9\u30f3\u30b9\u304b\u3089\u30e1\u30fc\u30bf\u30fc\u307e\u305f\u306f\u30ea\u30ec\u30fc\u306b\u5f15\u304d\u307e\u3059\u3002\u4e09\u76f8\u30e1\u30fc\u30bf\u30fc\u3092\u914d\u7dda\u3059\u308b\u5834\u5408\u3001\u56de\u8def\u306f\u661f\u578b\u30d1\u30bf\u30fc\u30f3\u3067\u914d\u7dda\u3057\u3001\u5730\u9762\u306b1\u70b9\u3067\u63a5\u5730\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u6b8b\u7559\u96fb\u6d41\u306b\u306f\u30b3\u30a2\u30d0\u30e9\u30f3\u30b9CT\u3092\u4f7f\u7528\u3057\u3001\u8ca0\u8377\u306b\u5fdc\u3058\u3066\u4e8c\u6b21\u30ef\u30a4\u30e4\u30fc\u306e\u30b5\u30a4\u30ba\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8ca0\u8377\u306b\u96fb\u529b\u3092\u4f9b\u7d66\u3059\u308b\u524d\u306b\u3001\u5e38\u306b\u30c6\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u7528\u3057\u3066\u56de\u8def\u3092\u77ed\u7d61\u3057\u3001\u4e00\u6b21\u5074\u306b\u96fb\u6d41\u304c\u6d41\u308c\u3066\u3044\u308b\u9650\u308a\u56de\u8def\u3092\u5207\u65ad\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u6700\u521d\u306b\u4e00\u6b21\u6ce8\u5165\u3092\u4f7f\u7528\u3057\u3066\u8aad\u307f\u53d6\u308a\u5024\u3092\u78ba\u8a8d\u3057\u3001\u305d\u306e\u5f8c\u3001\u5c06\u6765\u306e\u53c2\u7167\u306e\u305f\u3081\u306b\u30b7\u30fc\u30c8\u306b\u6bd4\u7387\u3092\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>A current transformer (CT) is a device used with a metering\/protecting system for measuring large amounts of current\/levels that are not directly measurable; it converts current from 400, 1000 and 3000 A into a usable value of 5 or 1 A. This change happens under certain conditions that must be followed by the CT device: polarity must be correct, the burden must be accurate, secondary wiring should never be exposed to an open circuit while current is flowing. The manual includes specifications about the wiring connection of CTs with measuring, relay and monitoring devices, how to set wiring up step-wise and the way three-phase models should be wired. In case [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11534,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11533","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\/11533","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=11533"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/11533\/revisions"}],"predecessor-version":[{"id":11548,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/posts\/11533\/revisions\/11548"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media\/11534"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/media?parent=11533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/categories?post=11533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ja\/wp-json\/wp\/v2\/tags?post=11533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}