{"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":"%ec%a0%95%ea%b2%a9-%ec%a0%84%eb%a5%98-%ec%88%98-%ec%a0%95%ea%b2%a9-%ec%9e%91%eb%8f%99-%ec%a0%84%ec%95%95-%ec%9d%b4%ed%95%b4","status":"publish","type":"post","link":"https:\/\/w9-group.com\/ko\/blog\/understanding-rated-current-number-of-poles-and-rated-operating-voltage\/","title":{"rendered":"\uc815\uaca9 \uc804\ub958, \uc815\uaca9 \ud3f4 \uc218 \ubc0f \uc815\uaca9 \uc791\ub3d9 \uc804\uc555 \uc774\ud574"},"content":{"rendered":"

<\/p>\n

\uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30<\/a> \uc804\uae30 \uc2dc\uc2a4\ud15c\uc758 \uc548\uc804\uc131\uacfc \uc2e0\ub8b0\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \uc218\ud589\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc911\uc694\ud55c \uc7a5\uce58\ub294 \ud68c\ub85c\ub97c \uacfc\ubd80\ud558 \ubc0f \ub2e8\ub77d\uc73c\ub85c\ubd80\ud130 \ubcf4\ud638\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc73c\uba70, \uc774\ub97c \ud1b5\ud574 \uc0b0\uc5c5 \ubc0f \uc0c1\uc5c5 \ud658\uacbd\uc5d0\uc11c \ud544\uc218\uc801\uc778 \uad6c\uc131 \uc694\uc18c\uac00 \ub429\ub2c8\ub2e4. \uacf5\uae30 \ud68c\ub85c \ucc28\ub2e8\uae30\uc758 \uc8fc\uc694 \uc0ac\uc591(\uc608: \uc815\uaca9 \uc804\ub958, \ud3f4 \uc218, \uc815\uaca9 \uc791\ub3d9 \uc804\uc555 \ub4f1)\uc744 \uc774\ud574\ud558\ub294 \uac83\uc740 \ud2b9\uc815 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc801\ud569\ud55c \uc81c\ud488\uc744 \uc120\ud0dd\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n

Buyer check:<\/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

\uc120\ud0dd \uc2dc \uace0\ub824\ud574\uc57c \ud560 \uc8fc\uc694 \ud30c\ub77c\ubbf8\ud130\ub294 \uc815\uaca9 \uc804\ub958\uc785\ub2c8\ub2e4. \uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30.<\/a> \ud68c\ub85c \ucc28\ub2e8\uae30\uac00 \ud2b8\ub9ac\uac70\ub418\uc9c0 \uc54a\uace0 \uc548\uc804\ud558\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 \uc804\ub958\ub97c \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, 6300A\uc758 \uc804\ub958 \ub4f1\uae09\uc740 \ud68c\ub85c \ucc28\ub2e8\uae30\uac00 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 \uc804\ub958\uac00 6300\uc554\ud398\uc5b4\ub77c\ub294 \uac83\uc744 \uc758\ubbf8\ud558\uba70, \uc774\ub294 \uace0\ucd9c\ub825 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \uc774 \uaddc\uaca9\uc740 \ub300\ud615 \uae30\uacc4 \ubc0f \uc7a5\ube44\uac00 \ud070 \uc804\uae30 \ubd80\ud558\uc5d0 \ub178\ucd9c\ub418\ub294 \uc0b0\uc5c5 \ud658\uacbd\uc5d0\uc11c \ud2b9\ud788 \uc911\uc694\ud569\ub2c8\ub2e4. \uc801\uc808\ud55c \uc804\ub958 \ub4f1\uae09\uc758 \uacf5\uae30 \ud68c\ub85c \ucc28\ub2e8\uae30\ub97c \uc120\ud0dd\ud568\uc73c\ub85c\uc368 \uc804\uae30 \uc2dc\uc2a4\ud15c\uc758 \uc548\uc804\uc131\uacfc \ud6a8\uc728\uc131\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

\uc804\uc6d0\uc120\uc758 \uc218 \uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30<\/a> \uc774\ub294 \uace0\ub824\ud574\uc57c \ud560 \ub610 \ub2e4\ub978 \ud575\uc2ec \uc694\uc18c\uc785\ub2c8\ub2e4. \ud3f4\uc758 \uc218\ub294 \ud68c\ub85c \ucc28\ub2e8\uae30\uc758 \uad6c\uc131\uacfc \uacb0\ud568 \ubc1c\uc0dd \uc2dc \uc804\uae30 \ud750\ub984\uc744 \ucc28\ub2e8\ud560 \uc218 \uc788\ub294 \ub2a5\ub825\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc635\uc158\uc5d0\ub294 3P(\uc138 \uadf9) \ubc0f 4P(\ub124 \uadf9) \uad6c\uc131\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uad6c\uc131 \uc911 \uc120\ud0dd\uc740 \uc804\uae30 \uc2dc\uc2a4\ud15c\uc758 \ud2b9\uc815 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 3P \uacf5\uae30 \ucc28\ub2e8\uae30\ub294 \uc0bc\uc0c1 \uc2dc\uc2a4\ud15c\uc5d0 \uc801\ud569\ud558\uba70, 4P \ucc28\ub2e8\uae30\ub294 \uc0bc\uc0c1 4\uc120\uc2dd \uc2dc\uc2a4\ud15c\uc758 \uc911\uc131\uc810 \ubcf4\ud638\uc640 \uac19\uc740 \ucd94\uac00 \ubcf4\ud638\uac00 \ud544\uc694\ud55c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc801\ud569\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/p>\n

Application check:<\/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

\uc774 \uc81c\ud488\uc758 \uc815\uaca9 \uc791\ub3d9 \uc804\uc555\uc740 \uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30<\/a> \ub610\ud55c \uace0\ub824\ud574\uc57c \ud560 \uc911\uc694\ud55c \uc9c0\ud45c\uc785\ub2c8\ub2e4. \uc774 \ud30c\ub77c\ubbf8\ud130\ub294 \ud68c\ub85c \ucc28\ub2e8\uae30\uac00 \uc548\uc804\ud558\uac8c \uc791\ub3d9\ud560 \uc218 \uc788\ub294 \ucd5c\ub300 \uc804\uc555\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, 400V\/690V \uc815\uaca9 \uc791\ub3d9 \uc804\uc555\uc740 \uc774 \ubc94\uc704\uc758 \uc804\uc555\uc744 \uc0ac\uc6a9\ud558\ub294 \uc804\uae30 \uc2dc\uc2a4\ud15c\uc5d0 \ud574\ub2f9 \ucc28\ub2e8\uae30\uac00 \uc801\ud569\ud568\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ud68c\ub85c \ucc28\ub2e8\uae30\uc758 \uc815\uaca9 \uc791\ub3d9 \uc804\uc555\uc774 \uc804\uae30 \uc2dc\uc2a4\ud15c\uc758 \uc804\uc555\uacfc \uc77c\uce58\ud558\uc5ec \uc62c\ubc14\ub978 \ud68c\ub85c \ucc28\ub2e8\uae30 \uc791\ub3d9\uacfc \uc804\uae30 \uacb0\ud568 \ubcf4\ud638\ub97c \ubcf4\uc7a5\ud558\ub294 \uac83\uc774 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n

\uc120\ud0dd\ud560 \ub54c \uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30<\/a>, \uc801\uc6a9 \ubd84\uc57c\uc758 \ud2b9\uc815 \uc694\uad6c \uc0ac\ud56d\uc744 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4. \uc5ec\uae30\uc5d0\ub294 \uc815\uaca9 \uc804\ub958, \uadf9\uc218, \uc815\uaca9 \uc791\ub3d9 \uc804\uc555 \ub4f1\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc8fc\uc694 \uc0ac\uc591\uc744 \uc774\ud574\ud568\uc73c\ub85c\uc368 \uc815\ubcf4\uc5d0 \uc785\uac01\ud55c \uacb0\uc815\uc744 \ub0b4\ub9ac\uace0 \uc804\uae30 \uc2dc\uc2a4\ud15c\uc758 \uc548\uc804 \ubc0f \uc131\ub2a5 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud558\ub294 \ucc28\ub2e8\uae30\ub97c \uc120\ud0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc0b0\uc5c5\uc6a9 \uae30\uacc4, \uc0c1\uc5c5 \uc2dc\uc124 \ub610\ub294 \ud575\uc2ec \uc778\ud504\ub77c\uc5d0 \uad00\uacc4\uc5c6\uc774 \uc62c\ubc14\ub978 \uc120\ud0dd\uc744 \ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc5d0\uc5b4 \ud68c\ub85c \ucc28\ub2e8\uae30<\/a> \uc774\ub294 \uadc0\ud558\uc758 \uc804\uae30 \uc124\ube44\uc758 \uc2e0\ub8b0\uc131\uacfc \uc548\uc804\uc131\uc744 \uc720\uc9c0\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n

Evidence check:<\/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

\"6606390a980d391282.jpg\"<\/p>","protected":false},"excerpt":{"rendered":"

\uc804\uae30 \uc7a5\ube44 \uad6c\ub9e4 \uc2dc \uc815\ud655\ud55c \ud310\ub2e8\uc744 \ub0b4\ub9b4 \uc218 \uc788\ub3c4\ub85d \uc815\uaca9 \uc804\ub958, \ud3f4 \uc218 \ubc0f \uc815\uaca9 \uc791\ub3d9 \uc804\uc555\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc138\uc694. \uc790\uc138\ud55c \ub0b4\uc6a9\uc740 \uc5ec\uae30\uc5d0\uc11c \ud655\uc778\ud558\uc138\uc694!<\/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\/ko\/wp-json\/wp\/v2\/posts\/3659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/comments?post=3659"}],"version-history":[{"count":1,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3659\/revisions"}],"predecessor-version":[{"id":4161,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/posts\/3659\/revisions\/4161"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media\/3833"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/media?parent=3659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/categories?post=3659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ko\/wp-json\/wp\/v2\/tags?post=3659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}