{"id":20850,"date":"2025-12-15T09:30:56","date_gmt":"2025-12-15T01:30:56","guid":{"rendered":"https:\/\/viox.com\/?p=20850"},"modified":"2025-12-15T09:30:58","modified_gmt":"2025-12-15T01:30:58","slug":"pv-dc-protection-explained-mcbs-fuses-and-spds-vs-rcds","status":"publish","type":"post","link":"https:\/\/test.viox.com\/ja\/pv-dc-protection-explained-mcbs-fuses-and-spds-vs-rcds\/","title":{"rendered":"PV DC\u4fdd\u8b77\u306b\u3064\u3044\u3066\u89e3\u8aac\uff1aMCB\u3001\u30d2\u30e5\u30fc\u30ba\u3001SPD\u3068RCD\u306e\u6bd4\u8f03"},"content":{"rendered":"<div class=\"product-intro\">\n<p>\u3042\u308bReddit\u30e6\u30fc\u30b6\u30fc\u304c\u3001\u4e00\u898b\u7121\u5bb3\u306a\u8cea\u554f\u3092\u3057\u307e\u3057\u305f\u3002\u300c\u5b89\u5168\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3001\u592a\u967d\u5149\u767a\u96fb\u63a5\u7d9a\u7bb1\u306eDC\u5165\u529b\u5074\u306bRCD\uff08\u6f0f\u96fb\u906e\u65ad\u5668\uff09\u3092\u8a2d\u7f6e\u3059\u3079\u304d\u3067\u3057\u3087\u3046\u304b\uff1f\u300d \u6570\u5206\u4ee5\u5185\u306b\u3001\u8cc7\u683c\u3092\u6301\u3064\u96fb\u6c17\u6280\u5e2b\u3084\u592a\u967d\u5149\u767a\u96fb\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u3001\u7dca\u6025\u306e\u8b66\u544a\u3092\u30b9\u30ec\u30c3\u30c9\u306b\u6bba\u5230\u3055\u305b\u307e\u3057\u305f\u3002 <strong>\u3084\u3081\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u5371\u967a\u3067\u3059\u3002.<\/strong><\/p>\n<p>\u3053\u306e\u56de\u7b54\u306f\u3001DIY\u306e\u592a\u967d\u5149\u767a\u96fb\u8a2d\u5099\u3001\u3055\u3089\u306b\u306f\u4e00\u90e8\u306e\u5c02\u9580\u696d\u8005\u306b\u3088\u308b\u8a2d\u5099\u306b\u3082\u6df1\u523b\u306a\u30ea\u30b9\u30af\u3092\u3082\u305f\u3089\u3059\u3001\u91cd\u5927\u306a\u8aa4\u89e3\u3092\u660e\u3089\u304b\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u300c\u4fdd\u8b77\u3092\u5f37\u5316\u3059\u308c\u3070\u3059\u308b\u307b\u3069\u826f\u3044\u300d\u3068\u3044\u3046AC\u96fb\u6c17\u306e\u8003\u3048\u65b9\u306b\u6163\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u592a\u967d\u5149\u767a\u96fbDC\u56de\u8def\u306e\u4e16\u754c\u3067\u306f\u3001\u307e\u3063\u305f\u304f\u7570\u306a\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u5fc5\u8981\u3067\u3059\u3002\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u306eDC\u5074\u306b\u6a19\u6e96\u7684\u306aRCD\u3092\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u306f\u3001\u52b9\u679c\u304c\u306a\u3044\u3060\u3051\u3067\u306a\u304f\u3001\u8aa4\u3063\u305f\u5b89\u5fc3\u611f\u3092\u4e0e\u3048\u3001\u8a2d\u7f6e\u3092\u706b\u707d\u3084\u611f\u96fb\u306e\u5371\u967a\u306b\u3055\u3089\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001RCD\u304cDC\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u58ca\u6ec5\u7684\u306b\u6545\u969c\u3059\u308b\u7406\u7531\u3001PV\u63a5\u7d9a\u7bb1\u306b\u5b9f\u969b\u306b\u5fc5\u8981\u306a\u4fdd\u8b77\u30c7\u30d0\u30a4\u30b9\u3001\u304a\u3088\u3073\u6700\u65b0\u306e\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u3067\u6f0f\u96fb\u4fdd\u8b77\u304c\u5b9f\u969b\u306b\u3069\u3053\u3067\u884c\u308f\u308c\u308b\u304b\u3092\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n<h2>RCD\u304cDC\u56de\u8def\u3067\u6a5f\u80fd\u3057\u306a\u3044\u7406\u7531<\/h2>\n<h3>\u6839\u672c\u7684\u306a\u975e\u4e92\u63db\u6027<\/h3>\n<p>\u6f0f\u96fb\u906e\u65ad\u5668\u306f\u3001AC\u96fb\u6d41\u306e\u6d41\u308c\u306e\u4e0d\u5747\u8861\u3092\u691c\u51fa\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306eRCD\u306e\u5185\u90e8\u306b\u306f\u3001\u6d3b\u7dda\u3068\u4e2d\u6027\u7dda\u3092\u76e3\u8996\u3059\u308b\u5dee\u52d5\u30c8\u30e9\u30f3\u30b9\uff08\u30c8\u30ed\u30a4\u30c0\u30eb\u30b3\u30a2\uff09\u304c\u3042\u308a\u307e\u3059\u3002\u5065\u5168\u306aAC\u56de\u8def\u3067\u306f\u3001\u6d41\u51fa\u3059\u308b\u96fb\u6d41\u3068\u5e30\u9084\u3059\u308b\u96fb\u6d41\u304c\u7b49\u3057\u304f\u3001\u4e92\u3044\u306b\u6253\u3061\u6d88\u3057\u5408\u3046\u53cd\u5bfe\u65b9\u5411\u306e\u78c1\u5834\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u6f0f\u96fb\u304c\u767a\u751f\u3057\u305f\u5834\u5408\uff08\u305f\u3068\u3048\u3070\u3001\u4eba\u304c\u6d3b\u7dda\u306b\u89e6\u308c\u305f\u5834\u5408\uff09\u3001\u4e0d\u5747\u8861\u306b\u3088\u3063\u3066\u6b63\u5473\u306e\u78c1\u5834\u304c\u751f\u6210\u3055\u308c\u3001\u691c\u77e5\u30b3\u30a4\u30eb\u306b\u96fb\u6d41\u304c\u8a98\u5c0e\u3055\u308c\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u30c8\u30ea\u30c3\u30d7\u3057\u307e\u3059\u3002.<\/p>\n<p>\u3053\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u5168\u4f53\u306f\u3001\u7d76\u3048\u305a\u5909\u5316\u3059\u308b\u78c1\u5834\u3092\u751f\u6210\u3059\u308b\u4ea4\u6d41\u96fb\u6d41\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u76f4\u6d41\u96fb\u6d41\u306f\u3001\u3053\u306e\u691c\u51fa\u65b9\u6cd5\u3092\u6839\u672c\u7684\u306b\u7834\u58ca\u3059\u308b\u3001\u5b89\u5b9a\u3057\u305f\u5909\u5316\u306e\u306a\u3044\u78c1\u675f\u3092\u751f\u6210\u3057\u307e\u3059\u3002.<\/p>\n<h3>\u98fd\u548c\u306e\u554f\u984c\uff1aRCD\u304c\u898b\u3048\u306a\u304f\u306a\u308b<\/h3>\n<p>DC\u6f0f\u6d29\u96fb\u6d41\u304cRCD\u306e\u30c8\u30e9\u30f3\u30b9\u3092\u6d41\u308c\u308b\u3068\u3001\u78c1\u5fc3\uff08\u30b3\u30a2\uff09\u3092\u98fd\u548c\u3055\u305b\u308b\u4e00\u5b9a\u306e\u78c1\u675f\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002\u98fd\u548c\u3057\u305f\u30b3\u30a2\u306f\u3001\u78c1\u675f\u306e\u5909\u5316\u306b\u5fdc\u7b54\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u5371\u967a\u306a\u306e\u306f\u3053\u3053\u304b\u3089\u3067\u3059\u3002DC\u6545\u969c\u306b\u3088\u3063\u3066\u98fd\u548c\u3059\u308b\u3068\u3001RCD\u306f\u5f8c\u7d9a\u306eAC\u6545\u969c\u306b\u5bfe\u3057\u3066\u3082\u300c\u898b\u3048\u306a\u304f\u300d\u306a\u308a\u307e\u3059\u3002DC\u98fd\u548c\u5f8c\u306b\u5371\u967a\u306aAC\u6f0f\u6d29\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001RCD\u306f\u305d\u308c\u3092\u691c\u51fa\u3057\u306a\u304f\u306a\u308a\u3001\u30c8\u30ea\u30c3\u30d7\u306b\u5931\u6557\u3057\u307e\u3059\u3002.<\/p>\n<p>\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u5929\u5019\u3001\u7d2b\u5916\u7dda\u3001\u71b1\u30b5\u30a4\u30af\u30eb\u306b\u3088\u308bDC\u30b1\u30fc\u30d6\u30eb\u5468\u8fba\u306e\u7d76\u7e01\u52a3\u5316\u304c\u4e00\u822c\u7684\u3067\u3042\u308a\u3001DC\u6f0f\u6d29\u6545\u969c\u306f\u73fe\u5b9f\u7684\u3067\u6301\u7d9a\u7684\u306a\u8105\u5a01\u3067\u3059\u3002Type AC RCD\uff08\u6700\u3082\u4e00\u822c\u7684\u306a\u4f4f\u5b85\u7528\u30bf\u30a4\u30d7\uff09\u306f\u3001\u3053\u308c\u3089\u306e\u6ed1\u3089\u304b\u306aDC\u6b8b\u7559\u96fb\u6d41\u3092\u691c\u51fa\u3067\u304d\u305a\u3001\u9759\u304b\u306b\u6545\u969c\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>\u88681\uff1aRCD\u30bf\u30a4\u30d7\u3068DC\u4e92\u63db\u6027<\/strong><\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">RCD\u30bf\u30a4\u30d7<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">AC\u6545\u969c\u3092\u691c\u51fa<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u8108\u52d5DC\u3092\u691c\u51fa<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u30b9\u30e0\u30fc\u30baDC\u3092\u691c\u51fa<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">DC\u98fd\u548c\u30ea\u30b9\u30af<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">PV DC\u5074\u306b\u9069\u3057\u3066\u3044\u308b\u304b\uff1f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30bf\u30a4\u30d7AC<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2717<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2717<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u9ad8\u3044\uff08\u3042\u3089\u3086\u308bDC\u6210\u5206\u3067\u98fd\u548c\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u3044\u3044\u3048 \u2013 \u5371\u967a<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30bf\u30a4\u30d7A<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2717\uff08&gt;6mA\u3067\u76f2\u76ee\u306b\u306a\u308b\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u4e2d\u7a0b\u5ea6\uff086mA DC\u3092\u8d85\u3048\u308b\u3068\u98fd\u548c\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u3044\u3044\u3048 \u2013 \u5371\u967a<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30bf\u30a4\u30d7F<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2717\uff08&gt;10mA\u3067\u76f2\u76ee\u306b\u306a\u308b\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u4e2d\u7a0b\u5ea6\uff0810mA DC\u3092\u8d85\u3048\u308b\u3068\u98fd\u548c\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u3044\u3044\u3048 \u2013 \u5371\u967a<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30bf\u30a4\u30d7B<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2713<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u4f4e\u3044\uff08\u96fb\u5b50\u8a2d\u8a08\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u3044\u3044\u3048 \u2013 \u9593\u9055\u3063\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u5b9a\u683c\u96fb\u5727\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u96fb\u5727\u4ee5\u4e0a\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/strong> \u30b9\u30e0\u30fc\u30baDC\u3092\u691c\u51fa\u3067\u304d\u308bType B RCD\u3067\u3055\u3048\u3001DC\u6c5a\u67d3\u306e\u53ef\u80fd\u6027\u304c\u3042\u308bAC\u56de\u8def\u7528\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306aDC\u904e\u96fb\u6d41\u304a\u3088\u3073\u30a2\u30fc\u30af\u6545\u969c\u4fdd\u8b77\u306e\u4ee3\u308f\u308a\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n<h3>DC\u30a2\u30fc\u30af\u304c\u3088\u308a\u5371\u967a\u306a\u7406\u7531<\/h3>\n<p>\u691c\u51fa\u4ee5\u5916\u306b\u3082\u30012\u3064\u76ee\u306e\u91cd\u5927\u306a\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u306f\u30a2\u30fc\u30af\u6d88\u5f27\u3067\u3059\u3002AC\u96fb\u6d41\u306f\u30011\u79d2\u9593\u306b100\u56de\uff0850Hz\u30b7\u30b9\u30c6\u30e0\u306e\u5834\u5408\uff09\u30bc\u30ed\u3092\u30af\u30ed\u30b9\u3057\u3001\u30a2\u30fc\u30af\u304c\u6d88\u5f27\u3067\u304d\u308b\u81ea\u7136\u306a\u77ac\u9593\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30bc\u30ed\u30af\u30ed\u30b9\u30dd\u30a4\u30f3\u30c8\u3067\u306f\u3001\u30a2\u30fc\u30af\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u6700\u5c0f\u9650\u306b\u4f4e\u4e0b\u3057\u3001\u30ae\u30e3\u30c3\u30d7\u304c\u7d76\u7e01\u89e3\u9664\u3055\u308c\u3001\u518d\u70b9\u5f27\u304c\u9632\u6b62\u3055\u308c\u307e\u3059\u3002.<\/p>\n<p>DC\u306b\u306f\u30bc\u30ed\u30af\u30ed\u30b9\u304c\u3042\u308a\u307e\u305b\u3093\u3002DC\u30a2\u30fc\u30af\u304c\u78ba\u7acb\u3055\u308c\u308b\u3068\u3001\u96fb\u5727\u3068\u96fb\u6d41\u304c\u5341\u5206\u3067\u3042\u308b\u9650\u308a\u3001\u7121\u671f\u9650\u306b\u6301\u7d9a\u3057\u307e\u3059\u3002\u6a19\u6e96\u7684\u306aAC\u5b9a\u683c\u306e\u30b9\u30a4\u30c3\u30c1\u3068RCD\u306b\u306f\u3001DC\u30a2\u30fc\u30af\u3092\u5f37\u5236\u7684\u306b\u6d88\u5f27\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u78c1\u6c17\u30d6\u30ed\u30fc\u30a2\u30a6\u30c8\u30b3\u30a4\u30eb\u3001\u30a2\u30fc\u30af\u30b7\u30e5\u30fc\u30c8\u3001\u304a\u3088\u3073\u4f38\u9577\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u3042\u308a\u307e\u305b\u3093\u3002AC RCD\u3092DC\u56de\u8def\u3067\u4f7f\u7528\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u3001\u4f55\u3089\u304b\u306e\u5f62\u3067\u6545\u969c\u3092\u691c\u51fa\u3057\u305f\u3068\u3057\u3066\u3082\u3001\u63a5\u70b9\u3092\u958b\u304f\u3068\u3001\u30a2\u30fc\u30af\u304c\u6301\u7d9a\u3057\u3001\u63a5\u70b9\u6eb6\u7740\u3001\u307e\u305f\u306f\u30c7\u30d0\u30a4\u30b9\u306e\u7834\u58ca\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/viox-dc-protection-vs-ac-rcd-comparison-chart-showing-correct-dc-rated-mcb-fuses-spd-configuration-versus-dangerous-ac-rcd-installation-on-photovoltaic-combiner-box-systems.webp\" alt=\"VIOX DC protection vs AC RCD comparison chart showing correct DC-rated MCB fuses SPD configuration versus dangerous AC RCD installation on photovoltaic combiner box systems\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">VIOX DC\u4fdd\u8b77\u5bfeAC RCD\u6bd4\u8f03\u30c1\u30e3\u30fc\u30c8\u3002\u592a\u967d\u5149\u767a\u96fb\u63a5\u7d9a\u7bb1\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u5371\u967a\u306aAC RCD\u8a2d\u7f6e\u306b\u5bfe\u3059\u308b\u3001\u6b63\u3057\u3044DC\u5b9a\u683cMCB\u30d2\u30e5\u30fc\u30baSPD\u69cb\u6210\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<h2>DC\u4fdd\u8b77\u306e\u4e09\u4f4d\u4e00\u4f53\uff1a\u63a5\u7d9a\u7bb1\u306b\u5b9f\u969b\u306b\u5fc5\u8981\u306a\u3082\u306e<\/h2>\n<p>RCD\u306e\u4ee3\u308f\u308a\u306b\u3001PV\u63a5\u7d9a\u7bb1\u306b\u306f3\u3064\u306e\u7279\u6b8a\u306aDC\u5b9a\u683c\u4fdd\u8b77\u30c7\u30d0\u30a4\u30b9\u304c\u5fc5\u8981\u3067\u3059\u3002\u305d\u308c\u305e\u308c\u304c\u3001RCD\u3067\u306f\u63d0\u4f9b\u3067\u304d\u306a\u3044\u660e\u78ba\u306a\u6a5f\u80fd\u3092\u679c\u305f\u3057\u307e\u3059\u3002.<\/p>\n<h3>1. DC\u5b9a\u683cMCB\uff08\u30df\u30cb\u30c1\u30e5\u30a2\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\u30fc\uff09 <a href=\"https:\/\/test.viox.com\/ja\/mcb\/\">MCB\uff08\u30df\u30cb\u30c1\u30e5\u30a2\u30b5\u30fc\u30ad\u30c3\u30c8\u30d6\u30ec\u30fc\u30ab\u30fc\uff09<\/a><\/h3>\n<p><strong>\u6a5f\u80fd\uff1a<\/strong> \u7d50\u5408\u3055\u308c\u305f\u30a2\u30ec\u30a4\u51fa\u529b\u306e\u904e\u96fb\u6d41\u304a\u3088\u3073\u77ed\u7d61\u4fdd\u8b77\u3002.<\/p>\n<p><strong>DC\u56fa\u6709\u304c\u91cd\u8981\u306a\u7406\u7531\uff1a<\/strong> DC MCB\u306b\u306f\u3001\u78c1\u5834\u3092\u751f\u6210\u3057\u3066\u30a2\u30fc\u30af\u3092\u30a2\u30fc\u30af\u30b7\u30e5\u30fc\u30c8\u306b\u5f15\u304d\u4f38\u3070\u3057\u3066\u5f37\u5236\u7684\u306b\u9001\u308a\u8fbc\u3080\u78c1\u6c17\u30d6\u30ed\u30fc\u30a2\u30a6\u30c8\u30b3\u30a4\u30eb\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b7\u30e5\u30fc\u30c8\u306f\u3001\u30e1\u30a4\u30f3\u30a2\u30fc\u30af\u3092\u8907\u6570\u306e\u5c0f\u3055\u306a\u76f4\u5217\u30a2\u30fc\u30af\u306b\u5206\u5272\u3057\u3001\u56de\u8def\u304c\u305d\u308c\u3092\u7dad\u6301\u3067\u304d\u306a\u304f\u306a\u308b\u307e\u3067\u30a2\u30fc\u30af\u96fb\u5727\u3068\u62b5\u6297\u3092\u5287\u7684\u306b\u5897\u52a0\u3055\u305b\u307e\u3059\u3002\u3053\u306e\u300c\u9ad8\u62b5\u6297\u906e\u65ad\u65b9\u5f0f\u300d\u306f\u3001AC\u30d6\u30ec\u30fc\u30ab\u30fc\u3067\u4f7f\u7528\u3055\u308c\u308b\u300c\u30bc\u30ed\u96fb\u6d41\u906e\u65ad\u300d\u3068\u306f\u6839\u672c\u7684\u306b\u7570\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>DC MCB\u306f\u3001\u4e88\u60f3\u3055\u308c\u308b\u6700\u4f4e\u6e29\u5ea6\u3067\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u6700\u5927\u958b\u653e\u96fb\u5727\uff08Voc\uff09\u3067\u5b9a\u683c\u3055\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u901a\u5e38\u3001\u4f4f\u5b85\u7528\u30b7\u30b9\u30c6\u30e0\u3067\u306f600V\u307e\u305f\u306f1000V\u3067\u3059\u3002\u96fb\u6d41\u5b9a\u683c\u306f\u3001\u3059\u3079\u3066\u306e\u30b9\u30c8\u30ea\u30f3\u30b0\u306e\u6700\u5927\u96fb\u6d41\u306e\u5408\u8a08\uff08\u5404\u30b9\u30c8\u30ea\u30f3\u30b0\u306eIsc \u00d7 1.25\uff09\u3068\u3001\u9023\u7d9a\u4f7f\u7528\u306e\u305f\u3081\u306e\u8ffd\u52a0\u306e125\uff05\u5b89\u5168\u7387\u3092\u51e6\u7406\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>6\u30b9\u30c8\u30ea\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306e\u6a19\u6e96\u7684\u306a\u4ed5\u69d8\uff08\u30b9\u30c8\u30ea\u30f3\u30b0\u3042\u305f\u308a14A Isc\uff09\uff1a<\/strong><\/p>\n<ul>\n<li>\u6700\u5927\u5408\u8a08\u96fb\u6d41\uff1a6 \u00d7 14A \u00d7 1.25 = 105A<\/li>\n<li>125\uff05\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u305fMCB\u5b9a\u683c\uff1a105A \u00d7 1.25 = 131.25A<\/li>\n<li>\u9078\u629e\u3055\u308c\u305f\u5b9a\u683c\uff1a <strong>150A DC MCB\u30011000V\u5b9a\u683c<\/strong><\/li>\n<\/ul>\n<h3>2. DC\u30d2\u30e5\u30fc\u30ba\uff08gPV\u5b9a\u683c\uff09<\/h3>\n<p><strong>\u6a5f\u80fd\uff1a<\/strong> \u30b9\u30c8\u30ea\u30f3\u30b0\u30ec\u30d9\u30eb\u306e\u904e\u96fb\u6d41\u4fdd\u8b77\u304a\u3088\u3073\u9006\u96fb\u6d41\u4fdd\u8b77\u3002.<\/p>\n<p><strong>\u91cd\u8981\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff1a<\/strong> 1\u3064\u306e\u30b9\u30c8\u30ea\u30f3\u30b0\u3067\u6545\u969c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u5065\u5168\u306a\u30b9\u30c8\u30ea\u30f3\u30b0\u306f\u9006\u96fb\u6d41\u3092\u4f9b\u7d66\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30d2\u30e5\u30fc\u30ba\u304c\u306a\u3044\u3068\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u6700\u5927\u76f4\u5217\u30d2\u30e5\u30fc\u30ba\u5b9a\u683c\uff0820A\u301c30A\uff09\u3092\u8d85\u3048\u3001\u30b1\u30fc\u30d6\u30eb\u306e\u904e\u71b1\u3084\u706b\u707d\u306e\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>gPV\u30d2\u30e5\u30fc\u30ba\uff08IEC 60269-6\uff09\u306f\u3001\u9ad8\u3044DC\u96fb\u5727\u5b9a\u683c\uff08600V\u30011000V\u30011500V\uff09\u3001\u4e26\u5217\u30b9\u30c8\u30ea\u30f3\u30b0\u6545\u969c\u306b\u5bfe\u3059\u308bDC\u906e\u65ad\u5bb9\u91cf\u3001\u304a\u3088\u3073\u9023\u7d9a\u7684\u306a\u5c4b\u5916\u52d5\u4f5c\u306e\u305f\u3081\u306e\u71b1\u7279\u6027\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p><strong>NEC 690.9\u306b\u57fa\u3065\u304f\u30b5\u30a4\u30b8\u30f3\u30b0\uff1a<\/strong> \u30d2\u30e5\u30fc\u30ba\u5b9a\u683c\u2265 Isc \u00d7 1.56<\/p>\n<p>14.45A Isc\u306e\u5834\u5408\uff1a14.45A \u00d7 1.56 = 22.54A \u2192 \u9078\u629e <strong>25A gPV\u30d2\u30e5\u30fc\u30ba<\/strong><\/p>\n<h3>3. <a href=\"https:\/\/test.viox.com\/ja\/spd\/\">DC SPD\uff08\u907f\u96f7\u5668\uff09<\/a><\/h3>\n<p><strong>\u6a5f\u80fd\uff1a<\/strong> \u96f7\u304a\u3088\u3073\u904e\u6e21\u904e\u96fb\u5727\u4fdd\u8b77\u3002.<\/p>\n<p>\u592a\u967d\u5149\u767a\u96fb\u30a2\u30ec\u30a4\u306f\u3001\u907f\u96f7\u91dd\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002DC SPD\u306f\u3001MOV\u307e\u305f\u306fGDT\u3092\u4f7f\u7528\u3057\u3066\u904e\u96fb\u5727\u3092\u30af\u30e9\u30f3\u30d7\u3057\u3001\u30b5\u30fc\u30b8\u96fb\u6d41\u3092\u63a5\u5730\u306b\u8fc2\u56de\u3055\u305b\u307e\u3059\u3002.<\/p>\n<p><strong>\u4e3b\u306a\u4ed5\u69d8\uff1a<\/strong><\/p>\n<ul>\n<li>\u96fb\u5727\u5b9a\u683c\uff08Uc\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6700\u5927Voc\u3092\u8d85\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/li>\n<li>\u6700\u5927\u653e\u96fb\u96fb\u6d41\uff08Imax\uff09\uff1aType 2 SPD\u306e\u5834\u5408\u306f20kA\u301c40kA<\/li>\n<li>\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u6700\u5927\u5165\u529b\u3092\u4e0b\u56de\u308b\u96fb\u5727\u4fdd\u8b77\u30ec\u30d9\u30eb\uff08Up\uff09<\/li>\n<\/ul>\n<p>SPD\u306f\u3001\u30b5\u30fc\u30b8\u30a4\u30d9\u30f3\u30c8\u5f8c\u306e\u691c\u67fb\u304c\u5fc5\u8981\u306a\u6d88\u8017\u54c1\u3067\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/viox-pv-combiner-box-cutaway-diagram-showing-dc-mcb-gpv-fuses-dc-spd-internal-components-busbars-and-proper-dc-protection-device-configuration-for-solar-systems.webp\" alt=\"VIOX PV combiner box cutaway diagram showing DC MCB gPV fuses DC SPD internal components busbars and proper DC protection device configuration for solar systems\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">VIOX PV\u63a5\u7d9a\u7bb1\u306e\u65ad\u9762\u56f3\u3002DC MCB gPV\u30d2\u30e5\u30fc\u30baDC SPD\u306e\u5185\u90e8\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3001\u30d0\u30b9\u30d0\u30fc\u3001\u304a\u3088\u3073\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u7528\u306e\u9069\u5207\u306aDC\u4fdd\u8b77\u30c7\u30d0\u30a4\u30b9\u69cb\u6210\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<p><strong>\u88682\uff1a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9078\u629e\u30de\u30c8\u30ea\u30c3\u30af\u30b9 \u2013 \u5404\u30c7\u30d0\u30a4\u30b9\u306e\u914d\u7f6e\u5834\u6240<\/strong><\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u6240\u5728\u5730<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u904e\u96fb\u6d41\u4fdd\u8b77<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u9006\u96fb\u6d41\u4fdd\u8b77<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u30b5\u30fc\u30b8\u4fdd\u8b77<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u6f0f\u6d29\/\u7d76\u7e01\u76e3\u8996<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30b9\u30c8\u30ea\u30f3\u30b0\u30ec\u30d9\u30eb<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30aa\u30d7\u30b7\u30e7\u30f3\uff08\u4e26\u5217\u30b9\u30c8\u30ea\u30f3\u30b0\u304c3\u3064\u4ee5\u4e0a\u306e\u5834\u5408\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>gPV\u30d2\u30e5\u30fc\u30ba\uff08\u5fc5\u9808\uff09<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30aa\u30d7\u30b7\u30e7\u30f3\uff08\u30b9\u30c8\u30ea\u30f3\u30b0SPD\uff09<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2014<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u30dc\u30c3\u30af\u30b9\u51fa\u529b<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>DC MCB\uff08\u5fc5\u9808\uff09<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2014<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>DC SPD\uff08\u5fc5\u9808\uff09<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2014<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30a4\u30f3\u30d0\u30fc\u30bf\u30fcDC\u5165\u529b<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306b\u5185\u8535<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306b\u5185\u8535<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">Type 2 SPD\u3092\u642d\u8f09\u3057\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>RCMU\/ISO\u76e3\u8996<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30a4\u30f3\u30d0\u30fc\u30bf\u30fcAC\u51fa\u529b<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">AC MCB\/MCCB<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u2014<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">AC SPD<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>A\u578b\u307e\u305f\u306fB\u578bRCD<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/viox-solar-combiner-box-installation-with-dc-protection-equipment-mounted-on-pv-array-racking-system-showing-professional-photovoltaic-dc-disconnect-and-overcurrent-protection.webp\" alt=\"VIOX solar combiner box installation with DC protection equipment mounted on PV array racking system showing professional photovoltaic DC disconnect and overcurrent protection\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">VIOX\u30bd\u30fc\u30e9\u30fc\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u30dc\u30c3\u30af\u30b9\u306e\u8a2d\u7f6e\u3002PV\u30a2\u30ec\u30a4\u306e\u67b6\u53f0\u30b7\u30b9\u30c6\u30e0\u306bDC\u4fdd\u8b77\u6a5f\u5668\u304c\u53d6\u308a\u4ed8\u3051\u3089\u308c\u3066\u304a\u308a\u3001\u5c02\u9580\u7684\u306a\u592a\u967d\u5149\u767a\u96fbDC\u906e\u65ad\u304a\u3088\u3073\u904e\u96fb\u6d41\u4fdd\u8b77\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<h2>\u6f0f\u96fb\u4fdd\u8b77\u304c\u5b9f\u969b\u306b\u6a5f\u80fd\u3059\u308b\u5834\u6240\uff1a\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u5f79\u5272<\/h2>\n<p>DC\u5074\u306bRCD\u3092\u8a2d\u7f6e\u3057\u306a\u3044\u5834\u5408\u3001\u6f0f\u96fb\u4fdd\u8b77\u306f\u3069\u3053\u304b\u3089\u6765\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u7b54\u3048\uff1a\u6700\u65b0\u306e\u7cfb\u7d71\u9023\u7cfb\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u3067\u3059\u3002.<\/p>\n<h3>RCMU\uff1a\u6b8b\u7559\u96fb\u6d41\u76e3\u8996\u30e6\u30cb\u30c3\u30c8<\/h3>\n<p>\u6700\u65b0\u306e\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306b\u306f\u3001AC\u304a\u3088\u3073DC\u306e\u6b8b\u7559\u96fb\u6d41\u3092\u76e3\u8996\u3059\u308bRCMU\uff08\u6b8b\u7559\u96fb\u6d41\u76e3\u8996\u30e6\u30cb\u30c3\u30c8\uff09\u304c\u5185\u8535\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6a5f\u68b0\u7684\u306b\u30c8\u30ea\u30c3\u30d7\u3059\u308bRCD\u3068\u306f\u7570\u306a\u308a\u3001RCMU\u306f\u6545\u969c\u304c\u691c\u51fa\u3055\u308c\u308b\u3068\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306b\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3092\u6307\u793a\u3057\u307e\u3059\u3002.<\/p>\n<p><strong>RCMU\u306e\u52d5\u4f5c\u95be\u5024\uff1a<\/strong><\/p>\n<ul>\n<li>\u6025\u6fc0\u306a\u5909\u5316\u304c30mA\u4ee5\u4e0a\u306e\u5834\u5408\u30010.3\u79d2\u4ee5\u5185\u306b\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3092\u30c8\u30ea\u30ac\u30fc<\/li>\n<li>\u9023\u7d9a\u7684\u306a\u6f0f\u308c\u304c300mA\u4ee5\u4e0a\u306e\u5834\u5408\u3001\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3092\u30c8\u30ea\u30ac\u30fc<\/li>\n<li>\u81ea\u5df1\u30c6\u30b9\u30c8\u306e\u5931\u6557\u306f\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u8d77\u52d5\u3092\u9632\u6b62<\/li>\n<\/ul>\n<p><strong>ISO\u76e3\u8996\uff1a<\/strong> \u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306f\u6bce\u671d\u3001\u7cfb\u7d71\u9023\u7cfb\u524d\u306b\u7d76\u7e01\u62b5\u6297\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3059\u30021\u30e1\u30ac\u30aa\u30fc\u30e0\u672a\u6e80\u306e\u5834\u5408\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306f\u52d5\u4f5c\u3092\u62d2\u5426\u3057\u307e\u3059\u3002\u9ad8\u5ea6\u306a\u30e2\u30c7\u30eb\u306f\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u76e3\u8996\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n<p>\u3053\u308c\u3089\u306e\u7d71\u5408\u3055\u308c\u305f\u4fdd\u8b77\u6a5f\u80fd\u306f\u3001\u8a2d\u7f6e\u696d\u8005\u304cDC\u5074RCD\u3067\u8aa4\u3063\u3066\u9054\u6210\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u6a5f\u80fd\u3092\u6b63\u78ba\u306b\u51e6\u7406\u3057\u307e\u3059\u304c\u3001DC\u6545\u969c\u691c\u51fa\u7528\u306b\u7279\u5225\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p>\n<h3>AC\u5074RCD\uff1aRCD\u304c\u5c5e\u3059\u308b\u552f\u4e00\u306e\u5834\u6240<\/h3>\n<p>RCD\u306f\u3001\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u3067\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u305d\u308c\u306f\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u304cDC\u3092AC\u306b\u5909\u63db\u3057\u305f\u5f8c\u306eAC\u51fa\u529b\u5074\u3067\u3059\u3002.<\/p>\n<p><strong>\u5834\u6240<\/strong> \u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306eAC\u51fa\u529b\u3068\u4e3b\u96fb\u6c17\u30d1\u30cd\u30eb\u306e\u9593\u3002.<\/p>\n<p><strong>\u30bf\u30a4\u30d7\u306e\u9078\u629e\u306f\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u8a2d\u8a08\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n<p><strong>\u88683\uff1a\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u30bf\u30a4\u30d7\u5225\u306eAC\u5074RCD\u8981\u4ef6<\/strong><\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u30bf\u30a4\u30d7<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">DC-AC\u7d76\u7e01<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u30b9\u30e0\u30fc\u30ba\u306aDC\u6f0f\u6d29\u30ea\u30b9\u30af<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u5fc5\u8981\u306aRCD\u30bf\u30a4\u30d7<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u7406\u7531<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u7d76\u7e01\u578b\uff08\u30c8\u30e9\u30f3\u30b9\u4ed8\u304d\uff09<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30ac\u30eb\u30d0\u30cb\u30c3\u30af\u7d76\u7e01<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u306a\u3057<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30bf\u30a4\u30d7A<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30c8\u30e9\u30f3\u30b9\u306fDC\u6545\u969c\u304cAC\u5074\u306b\u5230\u9054\u3059\u308b\u306e\u3092\u963b\u6b62<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u975e\u7d76\u7e01\u578b\uff08\u30c8\u30e9\u30f3\u30b9\u30ec\u30b9\uff09<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u5206\u96e2\u306a\u3057<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u9ad8<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\"><strong>\u30bf\u30a4\u30d7B<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC\u6545\u969c\u304cAC\u5074\u306b\u6f0f\u308c\u308b\u53ef\u80fd\u6027\u3042\u308a\u3002A\u578b\u306f\u98fd\u548c\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u30c8\u30e9\u30f3\u30b9\u30ec\u30b9\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306bB\u578b\u304c\u5fc5\u8981\u306a\u7406\u7531\uff1a<\/strong> \u30ac\u30eb\u30d0\u30cb\u30c3\u30af\u7d76\u7e01\u304c\u306a\u3044\u5834\u5408\u3001DC\u5074\u306e\u7d76\u7e01\u4e0d\u826f\u306b\u3088\u308a\u3001\u30b9\u30e0\u30fc\u30ba\u306aDC\u96fb\u6d41\u304cAC\u56de\u8def\u306b\u6d41\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002A\u578bRCD\u306f\u3001\u98fd\u548c\u3059\u308b\u524d\u306b\u308f\u305a\u304b6mA\u306eDC\u3057\u304b\u8a31\u5bb9\u3057\u307e\u305b\u3093\u3002B\u578bRCD\u306f\u3001\u30b9\u30e0\u30fc\u30ba\u306aDC\u304c\u5b58\u5728\u3057\u3066\u3082\u6a5f\u80fd\u3057\u7d9a\u3051\u308b\u96fb\u5b50\u30bb\u30f3\u30b7\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002.<\/p>\n<p><strong>\u5fc5\u305a\u30e1\u30fc\u30ab\u30fc\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/strong> \u4e00\u90e8\u306e\u30e1\u30fc\u30ab\u30fc\uff08SolarEdge\uff09\u306fA\u578bRCD\u3092\u8a31\u53ef\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4ed6\u306e\u30e1\u30fc\u30ab\u30fc\uff08SMA\uff09\u306f\u30c8\u30e9\u30f3\u30b9\u30ec\u30b9\u30e2\u30c7\u30eb\u306bB\u578b\u3092\u8981\u6c42\u3057\u3066\u3044\u307e\u3059\u3002\u7591\u308f\u3057\u3044\u5834\u5408\u306f\u3001B\u578b\u304c\u6700\u5927\u306e\u4fdd\u8b77\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002.<\/p>\n<figure style=\"margin: 20px 0; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/img.viox.com\/viox-pv-system-topology-diagram-showing-dc-protection-architecture-from-solar-panels-through-gpv-fuses-dc-mcb-combiner-box-inverter-rcmu-monitoring-to-ac-side-type-b-rcd-protection.webp\" alt=\"VIOX PV system topology diagram showing DC protection architecture from solar panels through gPV fuses DC MCB combiner box inverter RCMU monitoring to AC-side Type B RCD protection\" \/><figcaption style=\"font-style: italic; font-size: 0.9em; color: #666; margin-top: 8px;\">VIOX PV\u30b7\u30b9\u30c6\u30e0\u30c8\u30dd\u30ed\u30b8\u56f3\u3002\u30bd\u30fc\u30e9\u30fc\u30d1\u30cd\u30eb\u304b\u3089gPV\u30d2\u30e5\u30fc\u30ba\u3001DC MCB\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u30dc\u30c3\u30af\u30b9\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fcRCMU\u76e3\u8996\u3001AC\u5074B\u578bRCD\u4fdd\u8b77\u307e\u3067\u306eDC\u4fdd\u8b77\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<h2>\u4e00\u822c\u7684\u306a\u69cb\u6210\u30a8\u30e9\u30fc\u3068\u4fee\u6b63<\/h2>\n<p><strong>\u88684\uff1a\u5371\u967a\u306a\u9593\u9055\u3044\u3068\u9069\u5207\u306a\u89e3\u6c7a\u7b56<\/strong><\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0;\" border=\"1\">\n<thead>\n<tr style=\"background-color: #f9f9f9;\">\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u30a8\u30e9\u30fc<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u5371\u967a\u306a\u7406\u7531<\/th>\n<th style=\"padding: 10px; border: 1px solid #ddd;\">\u6b63\u3057\u3044\u89e3\u6c7a\u7b56<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC\u5165\u529b\u306bAC\u578bRCD\u3092\u53d6\u308a\u4ed8\u3051\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC\u6545\u969c\u3092\u691c\u51fa\u3067\u304d\u307e\u305b\u3093\u3002\u98fd\u548c\u3057\u3066\u3059\u3079\u3066\u306e\u6545\u969c\u306b\u5bfe\u3057\u3066\u76f2\u76ee\u306b\u306a\u308a\u307e\u3059\u3002\u63a5\u70b9\u306fDC\u30a2\u30fc\u30af\u3092\u5b89\u5168\u306b\u906e\u65ad\u3067\u304d\u307e\u305b\u3093\u3002<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC MCB + gPV\u30d2\u30e5\u30fc\u30ba\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u6f0f\u6d29\u691c\u51fa\u306b\u306f\u30a4\u30f3\u30d0\u30fc\u30bf\u30fcRCMU\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u30dc\u30c3\u30af\u30b9\u3067AC\u5b9a\u683c\u306e\u30d2\u30e5\u30fc\u30ba\u3092\u4f7f\u7528\u3059\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC\u906e\u65ad\u5bb9\u91cf\u304c\u4e0d\u8db3\u3057\u3066\u3044\u307e\u3059\u3002DC\u6545\u969c\u96fb\u6d41\u3092\u906e\u65ad\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u7206\u767a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u5e38\u306b\u9069\u5207\u306aDC\u96fb\u5727\u5b9a\u683c\u306egPV\u5b9a\u683c\u30d2\u30e5\u30fc\u30ba\uff08IEC 60269-6\uff09\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u300c\u5c06\u6765\u306e\u62e1\u5f35\u306e\u305f\u3081\u300d\u306b\u30d2\u30e5\u30fc\u30ba\u3092\u904e\u5927\u306b\u8a2d\u5b9a\u3059\u308b\u201c<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">10A\u30b9\u30c8\u30ea\u30f3\u30b0\u306b30A\u30d2\u30e5\u30fc\u30ba\u3092\u4f7f\u7528\u3057\u3066\u3082\u3001\u9006\u904e\u96fb\u6d41\u304b\u3089\u4fdd\u8b77\u3055\u308c\u307e\u305b\u3093\u3002\u30d2\u30e5\u30fc\u30ba\u306e\u76ee\u7684\u3092\u7121\u52b9\u306b\u3057\u307e\u3059\u3002<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">NEC 690.9\uff08Isc \u00d7 1.56\uff09\u306b\u5f93\u3063\u3066\u30d2\u30e5\u30fc\u30ba\u3092\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4ee3\u308f\u308a\u306b\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u30dc\u30c3\u30af\u30b9\/\u30d0\u30b9\u30d0\u30fc\u3092\u5927\u304d\u304f\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30b3\u30b9\u30c8\u3092\u7bc0\u7d04\u3059\u308b\u305f\u3081\u306bSPD\u3092\u7701\u7565\u3059\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u96f7\u306b\u3088\u308b\u904e\u6e21\u73fe\u8c61\u304c\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u3092\u7834\u58ca\u3057\u307e\u3059\u3002\u4fdd\u967a\u306f\u4e0d\u9069\u5207\u306a\u8a2d\u7f6e\u3092\u30ab\u30d0\u30fc\u3057\u306a\u3044\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30b3\u30f3\u30d0\u30a4\u30ca\u30fc\u51fa\u529b\u306bDC SPD\u3092\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002\u30d1\u30cd\u30eb\u306bAC SPD\u3082\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30c8\u30e9\u30f3\u30b9\u30ec\u30b9\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u3067A\u578bRCD\u3092\u4f7f\u7528\u3059\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30bf\u30a4\u30d7A\u306f&gt;6mA\u306e\u5e73\u6ed1DC\u3067\u98fd\u548c\u3057\u3001DC\u6df7\u5165AC\u6545\u969c\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u306b\u5931\u6557\u3059\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u7a2e\u985e\u3092\u78ba\u8a8d\u3057\u3001IEC 60364-7-712\u306b\u5f93\u3044\u3001\u975e\u7d76\u7e01\u8a2d\u8a08\u306b\u306f\u30bf\u30a4\u30d7B\u306eRCD\u3092\u4f7f\u7528\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">DC\u5b9a\u683c\u3092\u78ba\u8a8d\u305b\u305a\u306bDC MCB\u3092\u53d6\u308a\u4ed8\u3051\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">AC MCB\u306fDC\u906e\u65ad\u6642\u306b\u58ca\u6ec5\u7684\u306a\u6545\u969c\u3092\u8d77\u3053\u3059\u3002\u63a5\u70b9\u304c\u6eb6\u7740\u3057\u305f\u308a\u3001\u7206\u767a\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/td>\n<td style=\"padding: 10px; border: 1px solid #ddd;\">\u660e\u78ba\u306a\u300cDC\u300d\u306e\u8868\u793a\u3068\u3001\u6700\u4f4e\u6e29\u5ea6\u3067\u306e\u30b7\u30b9\u30c6\u30e0Voc\u4ee5\u4e0a\u306e\u96fb\u5727\u5b9a\u683c\u3092\u78ba\u8a8d\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6a5f\u5668\u4ed5\u69d8\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n<p>PV\u63a5\u7d9a\u7bb1\u306e\u90e8\u54c1\u3092\u8cfc\u5165\u3059\u308b\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u4ed5\u69d8\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>DC MCB:<\/h3>\n<ul>\n<li>DC\u96fb\u5727\u5b9a\u683c\u306f\u3001\u6700\u4f4e\u5468\u56f2\u6e29\u5ea6\u3067\u306e\u30b7\u30b9\u30c6\u30e0Voc\u4ee5\u4e0a<\/li>\n<li>\u96fb\u6d41\u5b9a\u683c\u306f\u3001\uff08\u30b9\u30c8\u30ea\u30f3\u30b0Isc\u306e\u5408\u8a08\u00d71.25\uff09\u00d71.25\u4ee5\u4e0a<\/li>\n<li>\u30c7\u30d0\u30a4\u30b9\u306b\u660e\u78ba\u306a\u300cDC\u300d\u306e\u8868\u793a<\/li>\n<li>\u906e\u65ad\u5bb9\u91cf\uff08Icu\uff09\u306f\u3001\u6700\u5927\u4e88\u60f3\u6545\u969c\u96fb\u6d41\u4ee5\u4e0a<\/li>\n<\/ul>\n<h3>gPV\u30d2\u30e5\u30fc\u30ba:<\/h3>\n<ul>\n<li>IEC 60269-6 gPV\u5206\u985e\u8868\u793a<\/li>\n<li>\u96fb\u6d41\u5b9a\u683c = Isc \u00d7 1.56\u3092\u6b21\u306e\u6a19\u6e96\u30b5\u30a4\u30ba\u306b\u5207\u308a\u4e0a\u3052<\/li>\n<li>\u96fb\u5727\u5b9a\u683c\u306f\u30011.2 \u00d7 \u30b7\u30b9\u30c6\u30e0Voc\u4ee5\u4e0a<\/li>\n<li>\u5b9a\u683c\u306f\u3001\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u6700\u5927\u76f4\u5217\u30d2\u30e5\u30fc\u30ba\u5b9a\u683c\u3092\u8d85\u3048\u306a\u3044<\/li>\n<\/ul>\n<h3>DC SPD:<\/h3>\n<ul>\n<li>\u5b9a\u683c\u9023\u7d9a\u52d5\u4f5c\u96fb\u5727\uff08Uc\uff09\u306f\u3001\u30b7\u30b9\u30c6\u30e0Voc\u4ee5\u4e0a<\/li>\n<li>\u30bf\u30a4\u30d72\u5206\u985e\u4ee5\u4e0a\uff08\u4e0a\u6d41\u306bSPD\u304c\u306a\u3044\u5834\u5408\u306f\u30bf\u30a4\u30d71\uff09<\/li>\n<li>\u6700\u5927\u653e\u96fb\u96fb\u6d41\uff08Imax\uff09\u306f\u300120kA\u4ee5\u4e0a<\/li>\n<li>\u96fb\u5727\u4fdd\u8b77\u30ec\u30d9\u30eb\uff08Up\uff09\u306f\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u6700\u5927\u5165\u529b\u96fb\u5727\u4ee5\u4e0b<\/li>\n<\/ul>\n<h3>\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc:<\/h3>\n<ul>\n<li>\u7d71\u5408\u3055\u308c\u305fRCMU\u307e\u305f\u306f\u540c\u7b49\u306eDC\u6545\u969c\u691c\u51fa<\/li>\n<li>\u7d76\u7e01\u62b5\u6297\u76e3\u8996\uff08ISO\uff09<\/li>\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u306f\u3001\u5fc5\u8981\u306aAC\u5074RCD\u30bf\u30a4\u30d7\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u308b<\/li>\n<\/ul>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<p><strong>Q: \u79c1\u306eAC\u96fb\u6c17\u6280\u5e2b\u306f\u3001\u5b89\u5168\u306e\u305f\u3081\u306b\u5e38\u306bRCD\u3092\u4f7f\u7528\u3059\u308b\u3068\u8a00\u3063\u3066\u3044\u307e\u3059\u3002DC\u5074\u3067\u306f\u306a\u305c\u4f7f\u7528\u3057\u306a\u3044\u306e\u3067\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: RCD\u306f\u4ea4\u6d41\u5c02\u7528\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u691c\u51fa\u30e1\u30ab\u30cb\u30ba\u30e0\u306f\u3001AC\u306e\u307f\u304c\u751f\u6210\u3059\u308b\u5909\u5316\u3059\u308b\u78c1\u5834\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002DC\u306f\u5b89\u5b9a\u3057\u305f\u78c1\u675f\u3092\u751f\u6210\u3057\u3001RCD\u306e\u30b3\u30a2\u3092\u98fd\u548c\u3055\u305b\u3001AC\u307e\u305f\u306fDC\u306e\u6545\u969c\u3092\u691c\u51fa\u3067\u304d\u306a\u304f\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001RCD\u63a5\u70b9\u306f\u3001AC\u304c\u63d0\u4f9b\u3059\u308b\u81ea\u7136\u306a\u30bc\u30ed\u30af\u30ed\u30b9\u304c\u306a\u3044\u305f\u3081\u3001DC\u30a2\u30fc\u30af\u3092\u5b89\u5168\u306b\u906e\u65ad\u3067\u304d\u307e\u305b\u3093\u3002DC\u3067RCD\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u300c\u8ffd\u52a0\u306e\u5b89\u5168\u300d\u3067\u306f\u306a\u304f\u3001\u8aa4\u3063\u305f\u4fe1\u983c\u3092\u751f\u307f\u51fa\u3059\u975e\u6a5f\u80fd\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002.<\/p>\n<p><strong>Q: \u30b9\u30e0\u30fc\u30baDC\u3092\u691c\u51fa\u3059\u308b\u306e\u3067\u3001DC\u5074\u306b\u30bf\u30a4\u30d7B\u306eRCD\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: \u30bf\u30a4\u30d7B\u306eRCD\u306f\u30b9\u30e0\u30fc\u30ba\u306aDC\u6b8b\u7559\u96fb\u6d41\u3092\u691c\u51fa\u3057\u307e\u3059\u304c\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u51fa\u529b\u306e\u3088\u3046\u306bDC\u304c\u6df7\u5165\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308bAC\u56de\u8def\u7528\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002DC MCB\u304a\u3088\u3073gPV\u30d2\u30e5\u30fc\u30ba\u304c\u63d0\u4f9b\u3059\u308b\u904e\u96fb\u6d41\u3001\u9006\u96fb\u6d41\u3001\u304a\u3088\u3073\u30a2\u30fc\u30af\u6545\u969c\u4fdd\u8b77\u3092\u7f6e\u304d\u63db\u3048\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3055\u3089\u306b\u91cd\u8981\u306a\u3053\u3068\u306b\u3001\u30bf\u30a4\u30d7B\u306eRCD\u3067\u3055\u3048\u3001\u9ad8\u96fb\u5727PV\u30a2\u30ec\u30a4\u306b\u5fc5\u8981\u306aDC\u906e\u65ad\u5bb9\u91cf\u3068\u30a2\u30fc\u30af\u6d88\u5f27\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6b63\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001DC\u5074\u306eDC\u5c02\u7528\u4fdd\u8b77\u30c7\u30d0\u30a4\u30b9\u3068\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u8a2d\u8a08\u3067\u5fc5\u8981\u306a\u5834\u5408\u306fAC\u51fa\u529b\u5074\u306e\u30bf\u30a4\u30d7B RCD\u3067\u3059\u3002.<\/p>\n<p><strong>Q: \u79c1\u306e\u63a5\u7d9a\u7bb1\u306bRCD\u306e\u53d6\u308a\u4ed8\u3051\u30b9\u30da\u30fc\u30b9\u304c\u3042\u308b\u5834\u5408\u306f\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: \u4e00\u90e8\u306e\u8f38\u5165\u54c1\u306e\u63a5\u7d9a\u7bb1\u306b\u306f\u3001\u7279\u5b9a\u306e\u5e02\u5834\u3084\u898f\u683c\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u306a\u3044\u6c4e\u7528DIN\u30ec\u30fc\u30eb\u53d6\u308a\u4ed8\u3051\u30b9\u30da\u30fc\u30b9\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u7269\u7406\u7684\u306a\u30b9\u30da\u30fc\u30b9\u304c\u3042\u308b\u304b\u3089\u3068\u3044\u3063\u3066\u3001RCD\u3092\u53d6\u308a\u4ed8\u3051\u308b\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002NEC\u7b2c690\u6761\uff08\u5317\u7c73\uff09\u307e\u305f\u306fIEC 62548\uff08\u56fd\u969b\uff09\u306e\u8981\u4ef6\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002DC MCB\u3001gPV\u30d2\u30e5\u30fc\u30ba\u3001\u304a\u3088\u3073DC SPD\u3067\u3059\u3002\u4f59\u5206\u306a\u30b9\u30da\u30fc\u30b9\u306f\u7a7a\u306e\u307e\u307e\u306b\u3059\u308b\u304b\u3001\u30d0\u30b9\u30d0\u30fc\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u8ffd\u52a0\u306e\u30b9\u30c8\u30ea\u30f3\u30b0\u4f4d\u7f6e\u306b\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<p><strong>Q: \u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306bRCMU\u3068ISO\u76e3\u8996\u6a5f\u80fd\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u3069\u3046\u3059\u308c\u3070\u308f\u304b\u308a\u307e\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: \u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u307e\u305f\u306f\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8a55\u5224\u306e\u826f\u3044\u30e1\u30fc\u30ab\u30fc\uff08SMA\u3001Fronius\u3001SolarEdge\u3001Solis\u3001Huawei\u306a\u3069\uff09\u306e\u6700\u65b0\u306e\u7cfb\u7d71\u9023\u7cfb\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306f\u3059\u3079\u3066\u3001\u3053\u308c\u3089\u306e\u6a5f\u80fd\u3092\u6a19\u6e96\u3067\u642d\u8f09\u3057\u3066\u304a\u308a\u3001\u300c\u5b89\u5168\u300d\u307e\u305f\u306f\u300c\u4fdd\u8b77\u6a5f\u80fd\u300d\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u300c\u6b8b\u7559\u96fb\u6d41\u76e3\u8996\u30e6\u30cb\u30c3\u30c8\uff08RCMU\uff09\u300d\u3001\u300c\u7d76\u7e01\u62b5\u6297\u76e3\u8996\u300d\u3001\u300c\u5730\u7d61\u691c\u51fa\u300d\u3001\u307e\u305f\u306f\u300cISO\u76e3\u8996\u300d\u306a\u3069\u306e\u7528\u8a9e\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u60c5\u5831\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u30e1\u30fc\u30ab\u30fc\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u30022015\u5e74\u4ee5\u964d\u306b\u7cfb\u7d71\u9023\u7cfb\u7528\u306b\u8ca9\u58f2\u3055\u308c\u305f\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306f\u3001\u7d71\u5408\u3055\u308c\u305fDC\u6545\u969c\u691c\u51fa\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n<p><strong>Q: \u5730\u5143\u306e\u691c\u67fb\u5b98\u304cRCD\u3092\u8981\u6c42\u3057\u3066\u3044\u307e\u3059\u3002\u5f7c\u3089\u306b\u4f55\u3092\u8a00\u3048\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: RCD\u3092\u3069\u3053\u306b\u53d6\u308a\u4ed8\u3051\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3092\u5177\u4f53\u7684\u306b\u5c0b\u306d\u3066\u304f\u3060\u3055\u3044\u3002\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u3068\u30e1\u30a4\u30f3\u30d1\u30cd\u30eb\u306e\u9593\u306eAC\u51fa\u529b\u5074\u3092\u610f\u5473\u3059\u308b\u5834\u5408\u306f\u3001\u305d\u308c\u304c\u6b63\u3057\u3044\u3067\u3059\u3002\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u30e1\u30fc\u30ab\u30fc\u306e\u4ed5\u69d8\u306b\u5f93\u3063\u3066\u3001\u30bf\u30a4\u30d7A\u307e\u305f\u306f\u30bf\u30a4\u30d7B\u3092\u53d6\u308a\u4ed8\u3051\u3066\u304f\u3060\u3055\u3044\u3002DC\u5074RCD\u3092\u4e3b\u5f35\u3059\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u3092\u4e01\u5be7\u306b\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>NEC 690.41\uff08\u30b7\u30b9\u30c6\u30e0\u5730\u7d61\u4fdd\u8b77\u304c\u5fc5\u8981\u3067\u3042\u308a\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fcRCMU\u304c\u63d0\u4f9b\u3057\u307e\u3059\uff09<\/li>\n<li>NEC 690.9\uff08DC\u5b9a\u683c\u30c7\u30d0\u30a4\u30b9\u306b\u3088\u308bDC\u904e\u96fb\u6d41\u4fdd\u8b77\u304c\u5fc5\u8981\uff09<\/li>\n<li>IEC 62548\u30bb\u30af\u30b7\u30e7\u30f38.2\uff08DC\u56de\u8def\u4fdd\u8b77\u8981\u4ef6\u2014RCD\u306f\u542b\u307e\u308c\u3066\u3044\u307e\u305b\u3093\uff09<\/li>\n<li>IEC 60364-7-712\u30bb\u30af\u30b7\u30e7\u30f3712.413.1.1.1.2\uff08\u975e\u7d76\u7e01\u30b7\u30b9\u30c6\u30e0\u306eAC\u5074\u306b\u306f\u30bf\u30a4\u30d7B RCD\u3092\u6307\u5b9a\uff09<\/li>\n<\/ul>\n<p>\u7d71\u5408\u3055\u308c\u305fRCMU\/ISO\u6545\u969c\u691c\u51fa\u3092\u793a\u3059\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u6280\u8853\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u691c\u67fb\u554f\u984c\u306f\u3001AC\u5074\u3068DC\u5074\u306e\u8981\u4ef6\u306e\u6df7\u540c\u304b\u3089\u751f\u3058\u307e\u3059\u3002.<\/p>\n<p><strong>Q: \u30bd\u30fc\u30e9\u30fc\u63a5\u7d9a\u7bb1\u3092DIY\u3067\u304d\u307e\u3059\u304b\u3001\u305d\u308c\u3068\u3082\u7d44\u307f\u7acb\u3066\u6e08\u307f\u306e\u3082\u306e\u3092\u8cfc\u5165\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/strong><\/p>\n<p>A: \u90e8\u54c1\u306e\u9078\u629e\u307e\u305f\u306f\u30b5\u30a4\u30b8\u30f3\u30b0\u8a08\u7b97\u306b\u3064\u3044\u3066\u4e0d\u660e\u306a\u5834\u5408\u306f\u3001VIOX Electric\u304b\u3089\u4e8b\u524d\u306b\u8a2d\u8a08\u3055\u308c\u305f\u63a5\u7d9a\u7bb1\u3092\u8cfc\u5165\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u3089\u306b\u306f\u3001\u6b63\u3057\u304f\u5b9a\u683c\u3055\u308c\u305fDC MCB\u3001gPV\u30d2\u30e5\u30fc\u30ba\u30db\u30eb\u30c0\u30fc\u3001SPD\u3001\u304a\u3088\u3073\u30d0\u30b9\u30d0\u30fc\u304c\u4ed8\u5c5e\u3057\u3066\u3044\u307e\u3059\u3002DIY\u306f\u3001NEC 690\/IEC 62548\u306e\u8981\u4ef6\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3057\u3001\u771f\u306bDC\u5b9a\u683c\u306e\u90e8\u54c1\u3092\u8abf\u9054\u3067\u304d\u308b\u5834\u5408\u306b\u306e\u307f\u53ef\u80fd\u3067\u3059\u3002.<\/p>\n<h2>\u9069\u5207\u306aDC\u4fdd\u8b77\u3067\u6295\u8cc7\u3092\u4fdd\u8b77\u3059\u308b<\/h2>\n<p>\u91cd\u8981\u306a\u306e\u306f\u3001\u592a\u967d\u5149\u767a\u96fb\u30b7\u30b9\u30c6\u30e0\u306eDC\u306e\u4e16\u754c\u306b\u5165\u308b\u3068\u304d\u306f\u3001AC\u96fb\u6c17\u306e\u8003\u3048\u65b9\u3092\u6368\u3066\u308b\u3053\u3068\u3067\u3059\u3002\u30bf\u30a4\u30d7AC\u3001A\u3001F\u3001\u307e\u305f\u306f\u30bf\u30a4\u30d7B\u3067\u3042\u3063\u3066\u3082\u3001RCD\u306f\u30bd\u30fc\u30e9\u30fc\u63a5\u7d9a\u7bb1\u306eDC\u5165\u529b\u5074\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u308c\u3089\u306f\u91cd\u8981\u306a\u6545\u969c\u3092\u691c\u51fa\u3067\u304d\u305a\u3001\u305d\u306e\u5f8c\u306e\u6545\u969c\u306b\u5bfe\u3057\u3066\u76f2\u76ee\u306b\u306a\u308a\u3001DC\u30a2\u30fc\u30af\u3092\u5b89\u5168\u306b\u906e\u65ad\u3067\u304d\u307e\u305b\u3093\u3002.<\/p>\n<p>\u6b63\u3057\u3044\u4fdd\u8b77\u6226\u7565\u306f\u3001DC\u306e\u4e09\u4f4d\u4e00\u4f53\u306b\u5f93\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>DC\u5b9a\u683cMCB<\/strong> \u904e\u96fb\u6d41\u304a\u3088\u3073\u77ed\u7d61\u4fdd\u8b77\u7528<\/li>\n<li><strong>gPV\u5b9a\u683c\u30d2\u30e5\u30fc\u30ba<\/strong> \u30b9\u30c8\u30ea\u30f3\u30b0\u30ec\u30d9\u30eb\u306e\u9006\u96fb\u6d41\u4fdd\u8b77\u7528<\/li>\n<li><strong>DC SPD<\/strong> \u96f7\u304a\u3088\u3073\u30b5\u30fc\u30b8\u4fdd\u8b77\u7528<\/li>\n<\/ol>\n<p>\u6f0f\u308c\u304a\u3088\u3073\u7d76\u7e01\u6545\u969c\u76e3\u8996\u306f\u3001DC\u6545\u969c\u691c\u51fa\u7528\u306b\u7279\u5225\u306b\u8a2d\u8a08\u3055\u308c\u305fRCMU\u304a\u3088\u3073ISO\u30b7\u30b9\u30c6\u30e0\u3092\u4ecb\u3057\u3066\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u5185\u90e8\u3067\u884c\u308f\u308c\u307e\u3059\u3002AC\u51fa\u529b\u5074\u3067\u306e\u307f\u3001\u30a4\u30f3\u30d0\u30fc\u30bf\u30fc\u30e1\u30fc\u30ab\u30fc\u306e\u4ed5\u69d8\u306b\u5f93\u3063\u3066\u9069\u5207\u306a\u30bf\u30a4\u30d7A\u307e\u305f\u306f\u30bf\u30a4\u30d7B RCD\u3092\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002.<\/p>\n<p>VIOX Electric\u306f\u3001NEC\u304a\u3088\u3073IEC\u898f\u683c\u306e\u4e21\u65b9\u3092\u6e80\u305f\u3059\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u305fPV\u63a5\u7d9a\u7bb1\u3001DC\u5b9a\u683cMCB\u3001gPV\u30d2\u30e5\u30fc\u30ba\u3001\u304a\u3088\u3073DC SPD\u306e\u5b8c\u5168\u306a\u30e9\u30a4\u30f3\u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059\u3002\u5f53\u793e\u306e\u4e8b\u524d\u69cb\u6210\u3055\u308c\u305f\u63a5\u7d9a\u7bb1\u306f\u3001\u90e8\u54c1\u306e\u9078\u629e\u3068\u30b5\u30a4\u30b8\u30f3\u30b0\u306b\u304a\u3051\u308b\u5f53\u3066\u63a8\u91cf\u3092\u6392\u9664\u3057\u307e\u3059\u3002\u30c6\u30af\u30cb\u30ab\u30eb\u30b5\u30dd\u30fc\u30c8\u3001\u30b5\u30a4\u30b8\u30f3\u30b0\u8a08\u7b97\u3001\u307e\u305f\u306f\u88fd\u54c1\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u3064\u3044\u3066\u306f\u3001 <a href=\"https:\/\/test.viox.com\/ja\/\">VIOX.com<\/a> \u307e\u305f\u306f\u3001\u5f53\u793e\u306e\u592a\u967d\u5149\u767a\u96fb\u4fdd\u8b77\u30b9\u30da\u30b7\u30e3\u30ea\u30b9\u30c8\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002AC\u306e\u4eee\u5b9a\u304cDC\u306e\u5b89\u5168\u6027\u3092\u640d\u306a\u308f\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A Reddit user asked a seemingly innocent question: &#8220;Should I install an RCD (residual current device) on the DC input side of my solar combiner box for extra safety?&#8221; Within minutes, licensed electricians and solar engineers flooded the thread with urgent warnings: Don&#8217;t do it. This is dangerous. The answer reveals a critical misconception that puts DIY solar installations\u2014and even some professional ones\u2014at serious risk. If you&#8217;re used to AC electrical thinking, where &#8220;more protection equals better,&#8221; the world of photovoltaic DC circuits requires a completely different approach. Installing a standard RCD on the DC side of a solar system isn&#8217;t just ineffective\u2014it can create a false sense of security [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20852,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-20850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/comments?post=20850"}],"version-history":[{"count":2,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20850\/revisions"}],"predecessor-version":[{"id":20853,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/posts\/20850\/revisions\/20853"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media\/20852"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/media?parent=20850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/categories?post=20850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/ja\/wp-json\/wp\/v2\/tags?post=20850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}