{"id":3659,"date":"2026-01-19T09:00:00","date_gmt":"2026-01-19T01:00:00","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/blog\/understanding-rated-current-number-of-poles-and-rated-operating-voltage\/"},"modified":"2026-10-08T11:35:17","modified_gmt":"2026-10-08T03:35:17","slug":"%e5%ae%9a%e6%a0%bc%e9%9b%bb%e6%b5%81%e3%80%81%e5%ae%9a%e6%a0%bc%e5%8b%95%e4%bd%9c%e9%9b%bb%e5%9c%a7%e3%81%ae%e7%90%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/w9-group.com\/ja\/blog\/understanding-rated-current-number-of-poles-and-rated-operating-voltage\/","title":{"rendered":"\u5b9a\u683c\u96fb\u6d41\u3001\u6975\u6570\u3001\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u306e\u7406\u89e3"},"content":{"rendered":"

<\/p>\n

\u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668<\/a> \u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u91cd\u8981\u306a\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u56de\u8def\u3092\u904e\u8ca0\u8377\u3084\u77ed\u7d61\u304b\u3089\u4fdd\u8b77\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u304a\u308a\u3001\u7523\u696d\u304a\u3088\u3073\u5546\u696d\u74b0\u5883\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u306a\u90e8\u54c1\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30a8\u30a2\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u30fc\u306e\u4e3b\u306a\u4ed5\u69d8\uff08\u5b9a\u683c\u96fb\u6d41\u3001\u30dd\u30fc\u30eb\u6570\u3001\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u306a\u3069\uff09\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u7279\u5b9a\u306e\u7528\u9014\u306b\u6700\u9069\u306a\u88fd\u54c1\u3092\u9078\u629e\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n

\u8cfc\u5165\u8005\u306e\u78ba\u8a8d\uff1a<\/strong> Match rated current to the calculated load and conductor ampacity, then verify pole count, rated operational voltage, insulation level and prospective short-circuit current. A large ampere label alone does not prove the breaker fits the switchboard.<\/p>\n

\u5b9a\u683c\u96fb\u6d41\u306f\u3001\u30b3\u30f3\u30c7\u30f3\u30b5\u3092\u9078\u629e\u3059\u308b\u969b\u306b\u8003\u616e\u3059\u3079\u304d\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u3002 \u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668\u3002.<\/a> \u906e\u65ad\u5668\u304c\u30c8\u30ea\u30c3\u30d7\u3059\u308b\u3053\u3068\u306a\u304f\u5b89\u5168\u306b\u6d41\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u6700\u5927\u96fb\u6d41\u3092\u6307\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u30016300A\u306e\u96fb\u6d41\u5b9a\u683c\u306f\u3001\u906e\u65ad\u5668\u304c\u51e6\u7406\u3067\u304d\u308b\u6700\u5927\u96fb\u6d41\u304c6300\u30a2\u30f3\u30da\u30a2\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u9ad8\u51fa\u529b\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u4ed5\u69d8\u306f\u3001\u91cd\u3044\u6a5f\u68b0\u3084\u6a5f\u5668\u304c\u5927\u304d\u306a\u96fb\u6c17\u8ca0\u8377\u306b\u3055\u3089\u3055\u308c\u308b\u7523\u696d\u74b0\u5883\u306b\u304a\u3044\u3066\u7279\u306b\u91cd\u8981\u3067\u3059\u3002\u9069\u5207\u306a\u30a2\u30f3\u30da\u30a2\u5b9a\u683c\u306e\u30a8\u30a2\u906e\u65ad\u5668\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u3068\u52b9\u7387\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002.<\/p>\n

\u30dd\u30fc\u30eb\u6570 \u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668<\/a> \u3053\u308c\u306f\u8003\u616e\u3059\u3079\u304d\u3082\u3046\u4e00\u3064\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u30dd\u30fc\u30eb\u6570\u306b\u3088\u3063\u3066\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u306e\u69cb\u6210\u304c\u6c7a\u307e\u308a\u3001\u307e\u305f\u6545\u969c\u6642\u306b\u96fb\u6c17\u306e\u6d41\u308c\u3092\u906e\u65ad\u3059\u308b\u80fd\u529b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u306f\u30013P\uff083\u6975\uff09\u304a\u3088\u30734P\uff084\u6975\uff09\u306e\u69cb\u6210\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u69cb\u6210\u306e\u9078\u629e\u306f\u3001\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u7279\u5b9a\u306e\u8981\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u30013P\u30a8\u30a2\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u306f\u4e09\u76f8\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u304c\u30014P\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u306f3\u76f84\u7dda\u30b7\u30b9\u30c6\u30e0\u306b\u304a\u3051\u308b\u4e2d\u6027\u70b9\u4fdd\u8b77\u306a\u3069\u306e\u8ffd\u52a0\u4fdd\u8b77\u304c\u5fc5\u8981\u306a\u7528\u9014\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002.<\/p>\n

\u7533\u8acb\u78ba\u8a8d\uff1a<\/strong> For an ACB main or feeder, also decide whether a fixed or withdrawable format, neutral switching and trip-unit adjustment are needed. Include ambient temperature, busbar arrangement and maintenance access in the selection record.<\/p>\n

\u3053\u306e\u88fd\u54c1\u306e\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u306f \u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668<\/a> \u307e\u305f\u3001\u8003\u616e\u3059\u3079\u304d\u91cd\u8981\u306a\u6307\u6a19\u3067\u3059\u3002\u3053\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u906e\u65ad\u5668\u304c\u5b89\u5168\u306b\u52d5\u4f5c\u3067\u304d\u308b\u6700\u5927\u96fb\u5727\u3092\u793a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u304c400V\/690V\u306e\u5834\u5408\u3001\u3053\u306e\u7bc4\u56f2\u306e\u96fb\u5727\u3092\u6301\u3064\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u3057\u305f\u906e\u65ad\u5668\u3067\u3042\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u906e\u65ad\u5668\u306e\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u304c\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u96fb\u5727\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u9069\u5207\u306a\u906e\u65ad\u5668\u52d5\u4f5c\u3068\u96fb\u6c17\u6545\u969c\u4fdd\u8b77\u304c\u78ba\u4fdd\u3055\u308c\u307e\u3059\u3002.<\/p>\n

\u9078\u629e\u6642\u306b \u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668<\/a>, \u3053\u308c\u3089\u91cd\u8981\u306a\u4ed5\u69d8\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u96fb\u6c17\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u6027\u3068\u6027\u80fd\u306e\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3059\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7523\u696d\u6a5f\u68b0\u3001\u5546\u696d\u65bd\u8a2d\u3001\u307e\u305f\u306f\u91cd\u8981\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3067\u3042\u308c\u3001\u9069\u5207\u306a\u56de\u8def\u30d6\u30ec\u30fc\u30ab\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5168\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002 \u30a8\u30a2\u56de\u8def\u906e\u65ad\u5668<\/a> \u96fb\u6c17\u8a2d\u5099\u306e\u4fe1\u983c\u6027\u3068\u5b89\u5168\u6027\u7dad\u6301\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002.<\/p>\n

\u8a3c\u62e0\u78ba\u8a8d\uff1a<\/strong> Request a nameplate or datasheet showing In, poles, Ue, Ui or Uimp where applicable, Icu\/Ics or equivalent fault data, trip functions and the applicable standard. Record the assumptions used in the fault study.<\/p>\n

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\u8a55\u4fa1\u96fb\u6d41\u3001\u30dd\u30fc\u30eb\u6570\u3001\u5b9a\u683c\u52d5\u4f5c\u96fb\u5727\u306b\u3064\u3044\u3066\u5b66\u7fd2\u3059\u308b\u3053\u3068\u3067\u3001\u96fb\u6c17\u6a5f\u5668\u306e\u8cfc\u5165\u6642\u306b\u3088\u308a\u9069\u5207\u306a\u5224\u65ad\u3092\u4e0b\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306f\u3053\u3061\u3089\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\uff01<\/p>","protected":false},"author":1,"featured_media":3833,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3659","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/comments?post=3659"}],"version-history":[{"count":1,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3659\/revisions"}],"predecessor-version":[{"id":4161,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/posts\/3659\/revisions\/4161"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media\/3833"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media?parent=3659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/categories?post=3659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/tags?post=3659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}