{"id":11514,"date":"2026-09-11T03:29:09","date_gmt":"2026-09-10T19:29:09","guid":{"rendered":"https:\/\/subian-electric.com\/?p=11514"},"modified":"2026-09-11T03:30:40","modified_gmt":"2026-09-10T19:30:40","slug":"unifilar-diagram-for-a-500-kva-transformer-in-the-united-states","status":"publish","type":"post","link":"https:\/\/subian-electric.com\/ko\/blog\/unifilar-diagram-for-a-500-kva-transformer-in-the-united-states\/","title":{"rendered":"\ubbf8\uad6d\uc758 500 kVA \ubcc0\uc555\uae30\ub97c \uc704\ud55c \ub2e8\uc120\ub3c4"},"content":{"rendered":"<p>\u201c\uc720\ub2c8\ud30c\uc77c \ub2e4\uc774\uc5b4\uadf8\ub7a8\u201d\uc774\ub77c\ub294 \uc6a9\uc5b4\ub294 \ubbf8\uad6d\uc5d0\uc11c \u201c\ub2e8\uc120 \ub2e4\uc774\uc5b4\uadf8\ub7a8\u201d\uc774\ub77c\uace0 \ubd88\ub9ac\uba70, 500-kVA \ubcc0\uc555\uae30\uac00 \uc804\ub825 \uc2dc\uc2a4\ud15c\uc5d0 \uc5b4\ub5bb\uac8c \uc5f0\uacb0\ub418\ub294\uc9c0\ub97c \ubcf4\uc5ec\uc8fc\ub294 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc5ec\uae30\uc5d0\ub294 \uc720\ud2f8\ub9ac\ud2f0 \ud68c\uc0ac\uc758 \uc804\uc6d0 \uacf5\uae09\uc6d0, 1\ucc28 \ubcf4\ud638 \ubc29\ubc95, \ubcc0\uc555\uae30 \uc790\uccb4\uc758 \uc815\uaca9, \ubcf4\ud638 \ubc0f 2\ucc28 \ubd84\ubc30, \uc811\uc9c0 \ubc29\ubc95\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubcc0\uc555\uae30\uc758 \ub2e8\uc120 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \uc720\ud2f8\ub9ac\ud2f0\uc640 \uad00\ud560\uad8c\uc744 \uac00\uc9c4 \ub2f9\uad6d(AHJ)\uc774 \uacc4\ud68d\uc744 \uc218\uc6a9\ud558\ub294 \ub370 \uc788\uc5b4 \uac00\uc7a5 \uc911\uc694\ud55c \uc9c0\uc810 \uc911 \ud558\ub098\uc774\uae30 \ub54c\ubb38\uc5d0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \uac00\uc774\ub4dc\ub294 \uc77c\ubc18\uc801\uc778 \ub808\uc774\uc544\uc6c3, \ub2e4\uc774\uc5b4\uadf8\ub7a8 \uadf8\ub9ac\uae30\uc758 \uc138\ubd80 \ub2e8\uacc4, \ud544\uc694\ud55c \uacc4\uc0b0, \uc911\uc694\ud55c \uc8fc\uc758 \uc0ac\ud56d \ubc0f \uc774 \uacfc\uc815\uc5d0\uc11c\uc758 \uc2e4\uc218\uc5d0 \ub300\ud55c \uc774\ud574\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<blockquote><p>\uc694\uc57d: \ubbf8\uad6d\uc5d0\uc11c 500 kVA \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \ub2e8\uc120 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \uccb4\uacc4\uc801\uc778 \uc21c\uc11c\ub97c \ub530\ub985\ub2c8\ub2e4. \uc774 \uc21c\uc11c\ub294 \uc720\ud2f8\ub9ac\ud2f0 \uc11c\ube44\uc2a4 \ubc0f \uacc4\ub7c9, \uc11c\ube44\uc2a4 \ucc28\ub2e8, 1\ucc28 \ud53c\ub354, NEC \ud45c 450.3(B)\uc5d0 \ub530\ub978 1\ucc28 \uacfc\ubd80\ud558 \ubcf4\ud638, kVA \uc815\uaca9\uc774 \uc9c0\uc815\ub41c \ubcc0\uc555\uae30, 1\ucc28 \ubc0f 2\ucc28 \uc804\uc555, \uc784\ud53c\ub358\uc2a4, \ubca1\ud130 \uadf8\ub8f9, \ud0ed, BIL \ubc0f \uc628\ub3c4 \uc0c1\uc2b9; 2\ucc28 \ud68c\ub85c\uc758 \uacfc\uc804\ub958 \ubcf4\ud638; 2\ucc28 \ud53c\ub354 \ub610\ub294 \ubc84\uc2a4\uc6e8\uc774; \uc811\uc9c0 \ubc0f \ubcf8\ub529 \ub3c4\uccb4\uc640 \uc5f0\uacb0\ub41c \ubc30\uc804\ubc18 \uc124\uce58\ub97c \ud3ec\ud568\ud558\uc5ec \ubcc4\ub3c4\uc758 \ud68c\ub85c\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4.<\/p><\/blockquote>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11515\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/Unifilar-Diagram-for-a-500-kVA-Transformer-in-the-United-States.webp\" alt=\"\ubbf8\uad6d\uc758 500 kVA \ubcc0\uc555\uae30\ub97c \uc704\ud55c \ub2e8\uc120\ub3c4\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>\uc720\ub2c8\ud30c\uc77c(\ub2e8\uc120) \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc774\ub780 \uc815\ud655\ud788 \ubb34\uc5c7\uc778\uac00\uc694?<\/h2>\n<p>\uc720\ub2c8\ud30c\uc77c \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \uc138 \uac1c\uc758 \uc704\uc0c1\uc744 \ubcf4\uc5ec\uc8fc\uae30 \uc704\ud574 \ud558\ub098\uc758 \uc120\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0bc\uc0c1 \uc804\ub825 \uc2dc\uc2a4\ud15c\uc744 \uc124\uba85\ud569\ub2c8\ub2e4. \uc774\ub294 \uac01 \uc9c0\uc810\uc5d0\uc11c \uc138 \uac1c\uc758 \uc804\uc120\uc744 \uadf8\ub9ac\ub294 \ub300\uc2e0 \uc804\uae30 \uc5d4\uc9c0\ub2c8\uc5b4\uac00 \ud558\ub098\uc758 \uc120\uc744 \uc0ac\uc6a9\ud558\uace0 \uc120 \ub0b4\uc5d0\uc11c \uc804\uc120 \uc218, \uc804\uc120 \ud06c\uae30 \ubc0f \uc124\uce58\uc5d0 \uc0ac\uc6a9\ub41c \ub808\uc774\uc2a4\uc6e8\uc774\ub97c \uc124\uba85\ud55c\ub2e4\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \u201c3-500 kcmil THHN + 1-250 kcmil GND in 2 \u00d7 3\u2033 EMT\u201d\uc640 \uac19\uc774 \ud45c\ud604\ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc774 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \uac04\uacb0\ud558\uc5ec \ud55c \uc7a5\uc758 \uc885\uc774\uc5d0 \ub9de\uc544 \uacc4\uc57d\uc790, \uac80\uc0ac\uc790 \ubc0f \uc804\uae30 \ud68c\uc0ac\uac00 \uc2dc\uc2a4\ud15c \uc124\uce58 \ubc29\ubc95\uc744 \uc774\ud574\ud558\ub294 \ub370 \ucda9\ubd84\ud569\ub2c8\ub2e4.<\/p>\n<table>\n<tbody>\n<tr>\n<th>\uc694\uc18c<\/th>\n<th>\ub2e8\uc120\uc5d0\uc11c \uc5b4\ub5bb\uac8c \ub098\ud0c0\ub098\ub294\uac00<\/th>\n<\/tr>\n<tr>\n<td>\ubcc0\uc555\uae30<\/td>\n<td>kVA, \uc804\uc555, \uc784\ud53c\ub358\uc2a4 \ubc0f \ubca1\ud130 \uadf8\ub8f9\uc774 \uc8fc\uc11d\uc73c\ub85c \ub2ec\ub9b0 \ub450 \uac1c\uc758 \ub9de\ubb3c\ub9b0 \uc6d0(\ub610\ub294 \uc0ac\uac01\ud615 \uae30\ud638)<\/td>\n<\/tr>\n<tr>\n<td>\ucc28\ub2e8\uae30<\/td>\n<td>\ud2b8\ub9bd \uc815\uaca9 \ubc0f \ucc28\ub2e8 \uc815\uaca9(AIC)\uc774 \uc788\ub294 \uc0ac\uac01\ud615 \ub610\ub294 \u201cCB\u201d\ub77c\ub294 \uae00\uc790<\/td>\n<\/tr>\n<tr>\n<td>\ud4e8\uc988<\/td>\n<td>\ud4e8\uc988 \uae30\ud638\uac00 \uc788\ub294 \uc9e7\uc740 \uc120, \ud4e8\uc988 \uc720\ud615 \ubc0f \uc554\ud398\uc5b4 \uc815\uaca9<\/td>\n<\/tr>\n<tr>\n<td>\ucc28\ub2e8 \uc2a4\uc704\uce58<\/td>\n<td>\uc554\ud398\uc5b4 \uc815\uaca9 \ubc0f NEMA \uc778\ud074\ub85c\uc800 \uc720\ud615\uc774 \uc788\ub294 \ube14\ub808\uc774\ub4dc \uae30\ud638<\/td>\n<\/tr>\n<tr>\n<td>\uacc4\ub7c9<\/td>\n<td>\uc120 \uc704\uc5d0 \uc6d0\uc73c\ub85c \ud45c\uc2dc\ub41c \uc804\ub958 \ubcc0\ud658\uae30(CT) \ubc0f \uc804\uc555 \ubcc0\ud658\uae30(PT)<\/td>\n<\/tr>\n<tr>\n<td>\uc811\uc9c0<\/td>\n<td>\uc811\uc9c0 \uc804\uadf9 \uae30\ud638\uac00 \uc788\ub294 \ubcc4\ub3c4\uc758 \ub3c4\uccb4 \uac00\uc9c0<\/td>\n<\/tr>\n<tr>\n<td>\ubd80\ud558<\/td>\n<td>\ubc84\uc2a4 \uc804\ub958 \ubc0f \uc0ac\uc6a9 \uac00\ub2a5\ud55c \uace0\uc7a5 \uc804\ub958\uac00 \uc788\ub294 \uc0ac\uac01\ud615\uc73c\ub85c \ud45c\uc2dc\ub41c \ud328\ub110\ubcf4\ub4dc \ubc0f \uc2a4\uc704\uce58\ubcf4\ub4dc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\uc720\ub2c8\ud30c\uc77c \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \ubc30\uc120 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uacfc \ub2e4\ub985\ub2c8\ub2e4. \uc65c\ub0d0\ud558\uba74 \uc885\ub2e8 \uc7a5\ube44\ub97c \ubcf4\uc5ec\uc8fc\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc774\ub294 \ud2b9\uc131, \ubcf4\ud638 \uc7a5\uce58, \ubc30\uc120 \ubc0f \uc811\uc9c0 \uc2dc\uc2a4\ud15c\uc744 \ud45c\uc2dc\ud558\ub294 \uc2dc\uc2a4\ud15c \uc218\uc900\uc758 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uacfc \ub354 \uc720\uc0ac\ud558\uba70, \uc2e0\uc18d\ud558\uace0 \uc27d\uac8c \uac1d\uccb4 \uc870\uc815\uc744 \uc5bb\uc744 \uc218 \uc788\ub3c4\ub85d \uc81c\uc2dc\ub429\ub2c8\ub2e4.<\/p>\n<h2>\uc120\uc744 \uadf8\ub9ac\uae30 \uc804\uc5d0 \uc22b\uc790\ub97c \uc54c\uc544\ub450\uc138\uc694.<\/h2>\n<p>\ub3c4\uba74\uc758 \uc804\ub958\ub294 \ubcc0\uc555\uae30\uc758 \uc815\uaca9 \ubd80\ud558 \uc804\ub958\uc640 500 kVA \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \uc774 \uac12\uc758 \uacc4\uc0b0\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4. \uc0bc\uc0c1: I = kVA \u00d7 1,000 \u00f7 (\u221a3 \u00d7 V) \ubc0f \ub2e8\uc0c1: I = kVA \u00d7 1,000 \u00f7 V.<\/p>\n<table>\n<tbody>\n<tr>\n<th>\uc5f0\uacb0<\/th>\n<th>\uc815\uaca9 \ubd80\ud558 \uc804\ub958<\/th>\n<th>\ubbf8\uad6d\uc5d0\uc11c\uc758 \uc77c\ubc18\uc801\uc778 \uc751\uc6a9<\/th>\n<\/tr>\n<tr>\n<td>500 kVA, 480 V \uc0bc\uc0c1 (1\ucc28)<\/td>\n<td>601 A<\/td>\n<td>480 V\uc5d0\uc11c\uc758 \uc720\ud2f8\ub9ac\ud2f0 \ub610\ub294 \uc11c\ube44\uc2a4 \uacf5\uae09; \uc77c\ubc18 \uc0c1\uc5c5\uc6a9 1\ucc28<\/td>\n<\/tr>\n<tr>\n<td>500 kVA, 480Y\/277 V 2\ucc28<\/td>\n<td>601 A<\/td>\n<td>277 V \uc870\uba85\uc744 \uac16\ucd98 \uc0c1\uc5c5\uc6a9 \ubc30\uc804<\/td>\n<\/tr>\n<tr>\n<td>500 kVA, 240 V \ub378\ud0c0 2\ucc28<\/td>\n<td>1,203 A<\/td>\n<td>\uc0b0\uc5c5 \ubc0f \uad6c\ud615 240 V \uc0bc\uc0c1 \ubc30\uc804<\/td>\n<\/tr>\n<tr>\n<td>500 kVA, 208Y\/120 V 2\ucc28<\/td>\n<td>1,388 A<\/td>\n<td>\ub2e4\uc138\ub300 \ubc0f \uc0c1\uc5c5\uc6a9 120 V \ucf58\uc13c\ud2b8\/\uc870\uba85 \ubd80\ud558<\/td>\n<\/tr>\n<tr>\n<td>500 kVA, 600 V 2\ucc28<\/td>\n<td>481 A<\/td>\n<td>600 V \uc7a5\ube44\uac00 \uc788\ub294 \uc0b0\uc5c5 \uc2dc\uc124 (\uc9c0\uc5ed)<\/td>\n<\/tr>\n<tr>\n<td>500 kVA, 240 V \ub2e8\uc0c1 (\uc13c\ud130 \ud0ed)<\/td>\n<td>2,083 A<\/td>\n<td>\uc774 \ud06c\uae30\uc5d0\uc11c\ub294 \ub4dc\ubb3c\uba70 \u2014 \uac00\uc815\ud558\uae30 \uc804\uc5d0 \uc774\ub984\ud45c\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\uc774\ub7ec\ud55c \uc22b\uc790 \ub4a4\uc5d0 \uc788\ub294 \ubd80\ud558 \uacc4\uc0b0 \u2014 500 kVA \uc911 \uc2e4\uc81c\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc591\uacfc \uc801\uc6a9\ub418\ub294 \ub2e4\uc591\uc131 \ubc0f \uc218\uc694 \uacc4\uc218 \u2014 \ub294 \uc124\uacc4\uc758 \uae30\ucd08\uc774\uba70, \uc774\ub294 \uc6b0\ub9ac\uc758 <a href=\"\/ko\/blog\/transformer-sizing-and-load-calculations\/\">\ubcc0\uc555\uae30 \ud06c\uae30 \uc870\uc815 \ubc0f \ubd80\ud558 \uacc4\uc0b0 \uac00\uc774\ub4dc\uc5d0\uc11c \ub2e4\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4.<\/a>. 400 kVA\uc758 \ud53c\ud06c \ubd80\ud558\ub97c \uac00\uc9c4 500 kVA \ubcc0\uc555\uae30\ub294 \ud6a8\uc728\uc131\uacfc \ubbf8\ub798\uc758 \uc694\uad6c \uce21\uba74\uc5d0\uc11c \uc2e4\uc81c\ub85c \ud3b8\uc548\ud55c 80% \ubd80\ud558\uc5d0\uc11c \uc791\ub3d9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-11516\" src=\"https:\/\/subian-electric.com\/wp-content\/uploads\/2026\/09\/The-standard-unifilar-topology-for-a-500-kVA-transformer.webp\" alt=\"500 kVA \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \ud45c\uc900 \uc720\ub2c8\ud30c\uc77c \ud1a0\ud3f4\ub85c\uc9c0\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>500 kVA \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \ud45c\uc900 \uc720\ub2c8\ud30c\uc77c \ud1a0\ud3f4\ub85c\uc9c0<\/h2>\n<p>\ub2e4\uc74c\uc740 \uadf8\ub798\ud53d\uc758 \uc544\ud649 \uac00\uc9c0 \uc694\uc18c \ubaa9\ub85d\uc785\ub2c8\ub2e4:<\/p>\n<table>\n<tbody>\n<tr>\n<th>#<\/th>\n<th>\uc694\uc18c<\/th>\n<th>\ubb34\uc5c7\uc744 \ubcf4\uc5ec\uc904 \uac83\uc778\uac00<\/th>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>\uc720\ud2f8\ub9ac\ud2f0 \uc11c\ube44\uc2a4 \/ \uc5f0\uacb0 \uc9c0\uc810<\/td>\n<td>\uc0ac\uc6a9 \uac00\ub2a5\ud55c \uace0\uc7a5 \uc804\ub958, \uc11c\ube44\uc2a4 \uc804\uc555, \uacc4\ub7c9\uae30 \uc704\uce58<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>\uc11c\ube44\uc2a4 \ucc28\ub2e8\uae30<\/td>\n<td>\uc554\ud398\uc5b4 \ub4f1\uae09, NEMA \uc778\ud074\ub85c\uc800, \ud4e8\uc988 \ub610\ub294 \ucc28\ub2e8\uae30 \uc720\ud615<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>\uc8fc \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58<\/td>\n<td>\ub3c4\uccb4 \ud06c\uae30, \uc218\ub7c9, \uc808\uc5f0, \ubc30\uad00 \u2014 125%\uc758 \uc8fc FLA(601 A\uc5d0 \ub300\ud574 751 A)\ub97c \uae30\uc900\uc73c\ub85c<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>\uc8fc \uacfc\uc804\ub958 \ubcf4\ud638<\/td>\n<td>NEC \ud45c 450.3(B)\uc5d0 \ub530\ub978 \uc7a5\uce58 \uc720\ud615 \ubc0f \uc815\uaca9; AIC \uc815\uaca9\uc774 \uc788\ub294 \ud4e8\uc988 \ub610\ub294 \ucc28\ub2e8\uae30<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>500 kVA \ubcc0\uc555\uae30<\/td>\n<td>kVA, \uc8fc\/\ubd80 \uc804\uc555, %Z, \ubca1\ud130 \uadf8\ub8f9, \ud0ed, BIL, \uc628\ub3c4 \uc0c1\uc2b9, \ub0c9\uac01 \ub4f1\uae09<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>\ubd80 \uba54\uc778 \ubcf4\ud638<\/td>\n<td>3(B)\uc5d0 \ub530\ub77c \ubd80 \ub3c4\uccb4 \ubc0f \ubcc0\uc555\uae30\uc5d0 \ub9de\uac8c \ud06c\uae30\uac00 \uc870\uc815\ub41c \ucc28\ub2e8\uae30 \ub610\ub294 \ud4e8\uc988<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>\ubd80 \ub3c4\uccb4<\/td>\n<td>125%\uc758 \ubd80 FLA, \uc804\ub958 \uc6a9\ub7c9 \ud45c \uc120\ud0dd, \ud544\uc694 \uc2dc \ubcd1\ub82c \uc138\ud2b8<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>\ubc30\uc804 \uc7a5\ube44<\/td>\n<td>\ubc84\uc2a4 \uc815\uaca9, \uc8fc\uc694 \uc7a5\uce58 \ubc0f \uc0ac\uc6a9 \uac00\ub2a5\ud55c \uace0\uc7a5 \uc804\ub958\uac00 \uc788\ub294 \uc2a4\uc704\uce58\ubcf4\ub4dc \ub610\ub294 \ud328\ub110\ubcf4\ub4dc<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>\uc811\uc9c0 \ubc0f \ubcf8\ub529<\/td>\n<td>NEC 250.30\uc5d0 \ub530\ub978 \uc2dc\uc2a4\ud15c \ubcf8\ub529 \uc810\ud37c, \uc811\uc9c0 \uc804\uadf9 \ub3c4\uccb4 \ubc0f \uc7a5\ube44 \uc811\uc9c0 \ub3c4\uccb4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\ub3c4\uba74\uc758 \ub808\uc774\uc544\uc6c3\uc740 \ub450 \uac00\uc9c0 \uad6c\uc131 \uc120\ud0dd\uc5d0 \ub530\ub77c \ubcc0\uacbd\ub429\ub2c8\ub2e4. \uccab \ubc88\uc9f8\uac00 \ub378\ud0c0\uc774\uace0 \ub450 \ubc88\uc9f8\uac00 \uc640\uc774(480Y\/277 V \uc0c1\uc5c5 \uc11c\ube44\uc2a4\uc758 \uae30\ubcf8 \uad6c\uc131)\uc77c \ub54c, \ubcc0\uc555\uae30\ub294 \u201cDyn1\u201d\ub85c \ud45c\uc2dc\ub418\uba70 \ubd80\ub294 \ubcc4\ub3c4\ub85c \uc720\ub3c4\ub41c \uc2dc\uc2a4\ud15c\uc73c\ub85c \uac04\uc8fc\ub418\uc5b4 \uc790\uccb4 \uc911\uc131\uc120\uacfc \uc790\uccb4 \uc811\uc9c0 \uc804\uadf9 \ub3c4\uccb4\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \uad8c\uc120 \uad6c\uc131 \uacb0\uc815 \u2014 \uadf8\ub9ac\uace0 \uadf8\uac83\uc774 \uc21c\ud658 \uc804\ub958, \uace0\uc870\ud30c \ubc0f \uc811\uc9c0\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5 \u2014 \ub294 \uc6b0\ub9ac\uc758 <a href=\"\/ko\/blog\/delta-delta-vs-delta-wye-transformer\/\">\ub378\ud0c0-\ub378\ud0c0 \ub300 \ub378\ud0c0-\uc640\uc774 \ubcc0\uc555\uae30 \uac00\uc774\ub4dc\uc5d0\uc11c \ub2e4\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4.<\/a>, \ub3c4\uba74\uc774 \ucd5c\uc885\ud654\ub418\uae30 \uc804\uc5d0 \uc77d\uc5b4\ubcfc \uac00\uce58\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ub2e8\uacc4\ubcc4: 500 kVA \ubcc0\uc555\uae30\uc758 \ub2e8\uc120\ub3c4 \uadf8\ub9ac\uae30<\/h2>\n<ul>\n<li>\uba85\ud310 \ubc0f \uc2dc\uc2a4\ud15c \uc815\ubcf4\ub97c \uc218\uc9d1\ud569\ub2c8\ub2e4. \ubcc0\uc555\uae30\uc758 kVA(500)\uc640 \uc8fc \ubc0f \ubd80 \uc804\uc555 \uc124\uc815, %Z \uc784\ud53c\ub358\uc2a4, \ubca1\ud130 \uadf8\ub8f9, \ud0ed \ubc94\uc704, BIL, \uc628\ub3c4 \uc0c1\uc2b9 \ubc0f \ub0c9\uac01 \ub4f1\uae09\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \ub610\ud55c, \uc720\ud2f8\ub9ac\ud2f0 \uace0\uc7a5 \uc804\ub958, \uc11c\ube44\uc2a4 \uc804\uc555 \ubc0f \ubd80\ud558 \uacc4\uc0b0\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uba85\ud310 \ub370\uc774\ud130 \uc5c6\uc774\ub294 \ub3c4\uba74\uc774 \ubb34\uc758\ubbf8\ud569\ub2c8\ub2e4.<\/li>\n<li>\uc804\uc555 \uad6c\uc131\uc744 \uc124\uc815\ud569\ub2c8\ub2e4. \uc2e4\uc81c \ud504\ub85c\uc81d\ud2b8 \ubd80\ud558\uc5d0\uc11c \uc8fc(\uc608: 13.8 kV \ub378\ud0c0 \ub610\ub294 12.47 kV \uc640\uc774) \ubc0f \ubd80(\uc608: 480Y\/277 V)\ub97c \ud655\uc778\ud569\ub2c8\ub2e4. \uad6c\uc131 \ud655\uc778 \uc804\uc5d0 \ubaa8\ud130 \ubc0f \uc870\uba85 \uc804\uc555\uacfc 208 V \ub610\ub294 240 V \uc7a5\ube44\uc5d0 \ub300\ud55c \uc694\uad6c \uc0ac\ud56d\uc744 \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n<li>\uc591\ucabd\uc758 \uc804\uccb4 \ubd80\ud558 \uc804\ub958\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4. \uc704\uc758 \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4: 480 V\uc5d0\uc11c 601 A, 240 V 3\uc0c1\uc5d0\uc11c 1,203 A \ub4f1. \ub450 \uc22b\uc790\ub97c \ubcc0\uc555\uae30 \uc606\uc5d0 \ub3c4\uba74\uc5d0 \uc801\uc5b4 \ub461\ub2c8\ub2e4.<\/li>\n<li>\uc8fc \ubcf4\ud638 \ud06c\uae30\ub97c \uacb0\uc815\ud569\ub2c8\ub2e4. \uc8fc \uc804\ub958\uac00 9 A\ub97c \ucd08\uacfc\ud558\ub294 \ubcc0\uc555\uae30\uc758 \uacbd\uc6b0, NEC \ud45c 450.3(B)\ub294 \uc8fc \uc804\ub958\uc758 125%\uae4c\uc9c0 \uc8fc \uc804\uc6a9 \ubcf4\ud638\ub97c \ud5c8\uc6a9\ud558\uba70, \uc774\ub294 601 A\uc758 \uacbd\uc6b0 \uac00\ub2a5\ud55c \ud55c 750 A \uc7a5\uce58\uac00 \ub418\uc5b4\uc57c \ud558\uba70, \uadf8\ub7ec\ud55c \uc7a5\uce58\uac00 \ubcc0\uc555\uae30\uc758 \uc790\ud654 \ub3cc\uc785 \uc804\ub958(\uc815\uaca9\uc758 8\ubc30\uc5d0\uc11c 12\ubc30\uc77c \uc218 \uc788\uc74c)\uc5d0 \uc758\ud574 \ud2b8\ub9bd\ub418\uc9c0 \uc54a\ub3c4\ub85d \uc870\uc815\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \ubd80 \ubcf4\ud638\uc758 \uacbd\uc6b0, \uc8fc \uc7a5\uce58\ub294 \ud45c\uc758 \uaddc\uce59\uc5d0 \ub530\ub77c 125% \uc774\ud558\ub85c \uc815\uaca9\uc774 \uc124\uc815\ub41c \uacbd\uc6b0 \ucd5c\ub300 250%\uae4c\uc9c0 \uc815\uaca9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\ub3c4\uccb4 \ud06c\uae30. \ubaa8\ub4e0 1\ucc28 \ubc0f 2\ucc28 \ub3c4\uccb4\uc758 \ud06c\uae30\ub97c \uac01\uac01\uc758 \uc815\uaca9 \ubd80\ud558 \uc804\ub958\uc758 \ucd5c\uc18c 125%(1\ucc28 751 A, 2\ucc28 480 V\uc758 \uacbd\uc6b0 751 A, \ub610\ub294 2\ucc28 240 V\uc758 \uacbd\uc6b0 1504 A)\ub85c \uc124\uc815\ud55c \ud6c4, \ud2b9\uc815 \uc808\uc5f0 \uc720\ud615 \ubc0f \ub2e8\uc790 \uc628\ub3c4 \ub4f1\uae09\uc744 \uace0\ub824\ud558\uc5ec NEC \uc804\ub958 \uc6a9\ub7c9 \ud45c\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud06c\uae30\ub97c \uc120\ud0dd\ud558\uace0, \uc8fc\ubcc0 \uc628\ub3c4 \ubc0f \ub808\uc774\uc2a4\uc6e8\uc774 \ucda9\uc804 \ube44\uc728\uc5d0 \ub530\ub978 \ubcf4\uc815 \uacc4\uc218\ub97c \uc801\uc6a9\ud569\ub2c8\ub2e4. \uc6b0\uc5f0\ud788\ub3c4, 1504 A 2\ucc28\ub294 \uac01 \uc0c1\uc5d0 \ub300\ud574 4\uac1c\uc758 \ubcd1\ub82c 500 kcmil \uad6c\ub9ac \ub3c4\uccb4\uac00 \ud544\uc694\ud560 \uc218 \uc788\uc73c\uba70, \uc774\ub7ec\ud55c \ub192\uc740 \uc804\ub958\uc5d0\uc11c \ubcd1\ub82c \ub3c4\uccb4 \uc0ac\uc6a9\uc758 \uc77c\ubc18\uc801\uc778 \uad00\ud589\uc73c\ub85c \uc778\ud574 \ub3d9\ub4f1\ud55c \uc54c\ub8e8\ubbf8\ub284 \uad6c\uc870\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5ec\uae30\uc11c \uc0ac\uc6a9\ub41c \ub3c4\uccb4 \ud06c\uae30 \uacb0\uc815 \uacfc\uc815\uc740 \ubaa8\ub4e0 \ubcc0\uc555\uae30 \ud68c\ub85c\uc758 \ud06c\uae30 \uacb0\uc815\uacfc \ub3d9\uc77c\ud558\uba70, \ub530\ub77c\uc11c \ub3c4\uccb4 \uc7ac\ub8cc \uad6c\uc131 \ubc0f \uadf8 \uad6c\uc131\uc5d0 \ub300\ud55c \ube44\uc6a9 \uc815\ubcf4\ub97c \uc218\uc9d1\ud558\ub294 \uac83\uc774 \uc6b0\ub9ac\uc758 \ubcc0\uc555\uae30 \ube44\uc6a9 \uac00\uc774\ub4dc\uc5d0 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/li>\n<li>\ubcf4\ud638 \uc870\uc815. \uc8fc\uc694 2\ucc28 \uc7a5\uce58, \ud53c\ub354 \uc7a5\uce58\ub97c \ud45c\uc2dc\ud558\uace0 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \uc694\uad6c\ud558\ub294 \ubaa8\ub4e0 \uc811\uc9c0 \uacb0\ud568 \uae30\ub2a5\uc744 \ud3ec\ud568\ud558\uc5ec \ubaa8\ub4e0 \uae30\ub2a5\uc744 \uc791\uc131\ud569\ub2c8\ub2e4. \ubc1c\uc804\uae30\uac00 \uc0ac\uc6a9\ub418\uac70\ub098 \uc720\ud2f8\ub9ac\ud2f0\uc5d0 \uc5f0\uacb0\ub41c \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294 \uc804\uc1a1 \uc7a5\ube44\uc640 \ud568\uaed8 \uc791\ub3d9\uc758 \uc77c\ubd80\uac00 \ub420 \ubaa8\ub4e0 \uacfc\uc804\ub958 \uc7a5\uce58\ub97c \ud45c\uc2dc\ud558\uace0 \ub3d9\uc77c\ud55c \uc904\uc5d0 \uadf8 \uc815\uaca9\uc744 \uae30\uc7ac\ud569\ub2c8\ub2e4.<\/li>\n<li>\uc811\uc9c0 \ubc0f \ubcf8\ub529. \ubcc4\ub3c4\ub85c \uc0dd\uc131\ub41c \uc2dc\uc2a4\ud15c\uc758 \uacbd\uc6b0, NEC 250.66\uc5d0 \ub530\ub77c \uc2dc\uc2a4\ud15c \ubcf8\ub529 \uc810\ud37c, \ub3c4\uccb4 \uc811\uc9c0 \uc804\uadf9\uc744 \ud45c\uc2dc\ud569\ub2c8\ub2e4. \uc811\uc9c0 \uc804\uadf9 \ubc0f \uc811\uc9c0 \ub3c4\uccb4\uc640 \uac19\uc740 \ubaa8\ub4e0 \uad6c\uc870\uc801 \uc694\uc18c\ub97c \ud45c\uc2dc\ud569\ub2c8\ub2e4. \ubcc0\uc555\uae30 \uc124\uce58 \uc911 \ubc1c\uc0dd\ud558\ub294 \uc811\uc9c0 \uc2e4\uc218\ub294 \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \uc2b9\uc778 \uac70\ubd80 \uc0ac\uc720\uc774\ubbc0\ub85c, \uc811\uc9c0 \ubb38\uc81c\ub294 \uc6b0\ub9ac\uc758 \ubcc0\uc555\uae30 \uc811\uc9c0 \uac00\uc774\ub4dc\uc5d0\uc11c \ub17c\uc758\ub429\ub2c8\ub2e4.<\/li>\n<li>\ub3c4\uba74 \uc791\uc131 \ubc0f \uad50\ucc28 \ucc38\uc870. \ubaa8\ub4e0 \uc7a5\ube44\uc758 \uc815\uaca9, \ubaa8\ub4e0 \ub3c4\uccb4\uc758 \ud06c\uae30 \ubc0f \uc218\ub7c9, \ubaa8\ub4e0 \ub808\uc774\uc2a4\ub97c \ud45c\uc2dc\ud569\ub2c8\ub2e4. \uc124\uacc4\ub97c \uac80\ud1a0\ub97c \uc704\ud574 \ubcf4\ub0b4\uae30 \uc804\uc5d0 NEC \uc870\ud56d \ucc38\uc870 \ubc0f \ubcc0\uc555\uae30 \uba85\ud310 \ub370\uc774\ud130\ub97c \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\ub3c4\uba74\uc5d0 \ud3ec\ud568\ub418\uc5b4\uc57c \ud560 \uc8fc\uc11d<\/h2>\n<p>\ub2e8\uc120\ub3c4\ub294 \ud568\uaed8 \uc81c\uacf5\ub41c \ub178\ud2b8\ub9cc\ud07c\ub9cc \ud6a8\uacfc\uc801\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. 500 kVA \uc124\uce58\uc758 \uacbd\uc6b0 \ud544\uc218 \uc8fc\uc11d \uc138\ud2b8\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li>\ubcc0\uc555\uae30: 500 kVA \uc815\uaca9, \uc0c1, \uc804\uc555, %Z, \ubca1\ud130 \uc720\ud615(\uc608: Dyn1), \uadf8\ub9ac\uace0 \uc5bc\ub9c8\ub098 \ud0ed\ud560 \uc218 \uc788\ub294\uc9c0(\u00b12 \u00d7 2.5%)\uc640 BIL \ubc0f \uc628\ub3c4 \uc0c1\uc2b9(\uc608: 65 \u00b0C).<\/li>\n<li>\ubcf4\ud638 \uc7a5\uce58: \uc720\ud615, \uc804\ub958 \uc815\uaca9, \ucc28\ub2e8 \uc815\uaca9(AIC), \ubc0f \uc778\ud074\ub85c\uc800 \uc720\ud615.<\/li>\n<li>\ub3c4\uccb4: \ud06c\uae30, \uac01 \uc0c1\uc758 \uc218\ub7c9, \uc808\uc5f0 \uc720\ud615, \ubc0f \uc124\uce58 \ubc29\ubc95.<\/li>\n<li>\uc811\uc9c0: \uc2dc\uc2a4\ud15c\uc758 \ubcf8\ub529 \uc810\ud37c \ud06c\uae30, \uc811\uc9c0 \ub3c4\uccb4 \ud06c\uae30, \ubc0f \uc804\uadf9 \uc720\ud615.<\/li>\n<li>\uc2dc\uc2a4\ud15c \ub370\uc774\ud130: \uc0ac\uc6a9 \uac00\ub2a5\ud55c \uace0\uc7a5 \uc804\ub958, \ubc0f \ubaa8\ub4e0 \uc7a5\uce58\uc758 AIC.<\/li>\n<li>\uc758\ubb34 \ubc0f \ucc38\uc870: \uad00\ub828\ub41c \ubd80\ud558 \uc720\ud615, \ubc0f NEC \ucf54\ub4dc\uc5d0 \ub530\ub77c \uc81c\uacf5\ub41c \ucc38\uc870.<\/li>\n<\/ul>\n<h2>500 kVA \ub2e8\uc120\ub3c4\uc5d0\uc11c\uc758 \uc77c\ubc18\uc801\uc778 \uc2e4\uc218<\/h2>\n<ul>\n<li>\ubcc0\uc555\uae30\uac00 \uc720\ud2f8\ub9ac\ud2f0 \uc11c\ube44\uc2a4\uc5d0\uc11c \uc911\uc131\uc744 \ubd84\ub9ac\ud560 \ub54c \uc2dc\uc2a4\ud15c \ubcf8\ub529 \uc810\ud37c\ub97c \ubb34\uc2dc\ud558\ub294 \uac83\uc740 \uc811\uc9c0\uc5d0\uc11c \uac00\uc7a5 \ub9ce\uc774 \uc5b8\uae09\ub418\ub294 \uc624\ub958\uc785\ub2c8\ub2e4.<\/li>\n<li>125%\uc758 \uc5f0\uc18d \ubd80\ud558 \ub300\uc2e0 \uc2e4\ud589 \ubd80\ud558\ub97c \uae30\ubc18\uc73c\ub85c 2\ucc28\ub97c \uacb0\uc815\ud558\ub294 \uac83\uc740 \uc804\uccb4 \ubd80\ud558\ub97c \ucc98\ub9ac\ud560 \uc218 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc740 \ubc30\uc120\uc73c\ub85c \uc774\uc5b4\uc9d1\ub2c8\ub2e4.<\/li>\n<li>\uc8fc \uc7a5\uce58\ub97c \uc120\ud0dd\ud560 \ub54c \uc778\ub7ec\uc2dc\ub97c \ubb34\uc2dc\ud558\uba74 \ubcc0\uc555\uae30\uac00 \uc5d0\ub108\uc9c0\uac00 \uacf5\uae09\ub420 \ub54c\ub9c8\ub2e4 \ud2b8\ub9bd\ub418\ub294 \uacb0\uacfc\ub97c \ucd08\ub798\ud569\ub2c8\ub2e4.<\/li>\n<li>\uc8fc\ubcc0 \uc628\ub3c4 \uc800\ud558\ub97c \uace0\ub824\ud558\uc9c0 \uc54a\ub294 \uac83\uc740 \ub9e4\uc6b0 \ub728\uac70\uc6b4 \uae30\uacc4\uc2e4\uacfc \uc0ac\ub9c9 \uc124\uce58\uc5d0\uc11c \uc2e4\uc81c \ubb38\uc81c\ub85c, 30 \u00b0C \uc774\uc0c1\uc5d0\uc11c \uc804\ub958 \uc6a9\ub7c9\uc774 \ud06c\uac8c \uac10\uc18c\ud569\ub2c8\ub2e4.<\/li>\n<li>\ub3c4\uba74\uacfc \uc7a5\ube44\uc758 \uba85\ud310\uc5d0\uc11c \ud0ed \uc124\uc815\uc774\ub098 \ubca1\ud130 \uadf8\ub8f9\uc744 \ud63c\ub3d9\ud558\uba74 \ubcd1\ub82c \ubcc0\uc555\uae30\uc758 \uc798\ubabb\ub41c \uc791\ub3d9\uc744 \ucd08\ub798\ud569\ub2c8\ub2e4.<\/li>\n<li>480Y\/277 V \ud68c\ub85c\uac00 \uc120-\uc911\uc131 \uc870\uba85 \uc2dc\uc2a4\ud15c\uc5d0 \uc804\uc6d0\uc744 \uacf5\uae09\ud560 \ub54c \ud68c\ub85c\uc5d0\uc11c \uc911\uc131\uc744 \ube7c\ub193\ub294 \uac83\uc785\ub2c8\ub2e4.<\/li>\n<li>\uc911\uac04 \ub2e8\uacc4\ub97c \uac70\uce58\uc9c0 \uc54a\uace0 480 V \ubcc0\uc555\uc11c\uc5d0\uc11c 208 V \ubd80\ud558\ub97c \uc5f0\uacb0\ud558\ub294 \uac83\uc740 \uc2dc\uc6b4\uc804 \ub2e8\uacc4\uc5d0\uc11c \uba85\ubc31\ud574\uc9c0\ub294 \uc2e4\uc218\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\ub204\uac00 \uadf8\ub9ac\uae30, \ub3c4\uc7a5, \uc2b9\uc778\ud574\uc57c \ud558\ub294\uac00<\/h2>\n<p>\uac70\uc758 \ubaa8\ub4e0 \ubbf8\uad6d \uc8fc\uc5d0\uc11c \uc0b0\uc5c5 \ubc0f \uc0c1\uc5c5 \ud504\ub85c\uc81d\ud2b8\uc758 \uc804\uae30 \uc124\uacc4\ub294 \ub4f1\ub85d\ub41c \uc804\ubb38 \uc5d4\uc9c0\ub2c8\uc5b4\uac00 \uc791\uc131\ud558\uac70\ub098 \ubc00\ubd09\ud574\uc57c \ud558\uba70, \uc0c1\ud638 \uc5f0\uacb0 \ub3c4\uba74\uc740 \uc720\ud2f8\ub9ac\ud2f0 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud574\uc57c \ud558\uace0 \uc11c\ube44\uc2a4 \ub2f9\uad6d\uc758 NEC \ucc44\ud0dd \uc2b9\uc778\uc744 \ubc1b\uc544\uc57c \ud569\ub2c8\ub2e4. \uc791\uc5c5\uc758 \uc9c4\ud589\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4: \uc5d4\uc9c0\ub2c8\uc5b4\ub294 \uc7a5\ube44\uc758 \uc804\ub825 \ub4f1\uae09 \ubc0f \uba85\ud310 \ud310\ub3c5\uac12\uc744 \uae30\ubc18\uc73c\ub85c \ub2e8\uc120 \ub3c4\uba74\uc744 \uc900\ube44\ud558\uace0, \uc720\ud2f8\ub9ac\ud2f0\ub294 \uc81c\uc548\ub41c \ubcf4\ud638 \uc2dc\uc2a4\ud15c\uc744 \ud3c9\uac00\ud558\uba70, AHJ\ub294 \ud5c8\uac00\ub97c \ubd80\uc5ec\ud558\uba74\uc11c \uc774\ub97c \uac80\ud1a0\ud558\uace0, \uacc4\uc57d\uc790\ub294 \uc2b9\uc778\ub41c \ub3c4\uba74\uc744 \ub530\ub974\uba70, \uc791\uc5c5\uc774 \ub05d\ub0a0 \ub54c \uc2dc\uacf5 \ubcc0\uacbd \uc0ac\ud56d\uc744 \uc5d4\uc9c0\ub2c8\uc5b4\uc5d0\uac8c \ubc18\ud658\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ub2e8\uacc4\ub97c \uac70\uce58\uc9c0 \uc54a\ub294 \ubaa8\ub4e0 \uacbd\ud5d8\uc740 \uc804\uc6d0\uc774 \uacf5\uae09\ub420 \uc218 \uc5c6\ub294 \uc7a5\ube44\ub85c \uc774\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>500 kVA \ubcc0\uc555\uae30\uac00 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \uc804\ub958\ub294 \uc5bc\ub9c8\uc785\ub2c8\uae4c?<\/h3>\n<p>\uc804\uccb4 \ubd80\ud558 \uc804\ub958\ub294 \uc804\uc555\uc5d0 \uc758\uc874\ud569\ub2c8\ub2e4. 500 kVA\ub85c \ud3c9\uac00\ub41c \ubcc0\uc555\uae30\ub294 480 V \uc0bc\uc0c1\uc5d0\uc11c \uc791\ub3d9\ud560 \uacbd\uc6b0 601 A, 240 V \uc0bc\uc0c1\uc5d0\uc11c \uc791\ub3d9\ud560 \uacbd\uc6b0 1,203 A, 600 V \uc0bc\uc0c1\uc5d0\uc11c \uc791\ub3d9\ud560 \uacbd\uc6b0 481 A, 208Y\/120 V\uc5d0\uc11c 1,388 A, \ub2e8\uc0c1 240 V\uc5d0\uc11c \ubcc0\uc555\uae30\ub97c \uc791\ub3d9\ud560 \uacbd\uc6b0 2,083 A\ub97c \uac00\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uacbd\uc6b0 \uc801\uc6a9\ud560 \uc218 \uc788\ub294 \ubc29\uc815\uc2dd\uc740 \uc0bc\uc0c1 \ud68c\ub85c\uc758 \uacbd\uc6b0 I = kVA * 1,000 \/ (\u221a3 * V)\uc774\uace0, \ub2e8\uc0c1 \uc2dc\uc2a4\ud15c\uc758 \uacbd\uc6b0 I = kVA * 1,000 \/ V\uc785\ub2c8\ub2e4.<\/p>\n<h3>500 kVA \ubcc0\uc555\uae30\uc758 \uac00\uaca9\uc740 \uc5bc\ub9c8\uc785\ub2c8\uae4c?<\/h3>\n<p>2026\ub144, \ubbf8\uad6d \uc2dc\uc7a5\uc5d0\uc11c \uc778\uc2dd\ub418\ub294 500 kVA \uc0bc\uc0c1 \ubcc0\uc555\uae30\uc758 \uac00\uaca9\uc740 \uc57d $10,000-25,000\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4. \ub4dc\ub77c\uc774 \ud0c0\uc785 \uc2e4\ub0b4 \uc720\ub2db\uc758 \uac00\uaca9\uc740 \uc870\uae08 \ub354 \ube44\uc300 \uac00\ub2a5\uc131\uc774 \uc788\uc73c\uba70, \ud504\ub9ac\ubbf8\uc5c4 \uad6c\ub9ac \uac10\uc740 \uc720\ub2db\uacfc \ub9de\ucda4 \uc8fc\ubb38\uc740 \uadf8\ubcf4\ub2e4 \ub354 \ube44\uc309\ub2c8\ub2e4; \uc124\uce58, \ud544\uc694\ud55c \ucf00\uc774\ube14, \ubcf4\ud638 \uc7a5\uce58, \ub178\ub3d9 \ubc0f \uc2dc\uc6b4\uc804\uc744 \uace0\ub824\ud558\uba74 \ucd1d \uac00\uaca9\uc740 $56,000\uc5d0\uc11c $88,000 \ubc94\uc704\uc5d0 \uc774\ub97c \uac83\uc774\uba70, \ub354 \ud070 \ub9ac\ud2b8\ub85c\ud54f\uc740 $100,000 \uc774\uc0c1\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Subian Electric\uc758 \uc778\uc99d\ub41c \uc218\uc785 \uc81c\ud488\uc740 \uc0ac\uc591\uc774 \ub3d9\uc77c\ud560 \uacbd\uc6b0 \ub2e4\ub978 \uc81c\ud488\ubcf4\ub2e4 30-45% \uc800\ub834\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>500 kVA \ubcc0\uc555\uae30\uc758 \ucd5c\ub300 \ubd80\ud558 \uc6a9\ub7c9\uc740 \uc5bc\ub9c8\uc785\ub2c8\uae4c?<\/h3>\n<p>\uc774 \uc9c8\ubb38\uc5d0 \ub300\ud55c \ub2f5\uc740 500 kVA\ub85c, \uc774\ub294 \uac89\ubcf4\uae30 \uc804\ub825\uc758 \ub4f1\uae09\uc73c\ub85c, \uc77c\ubc18\uc801\uc73c\ub85c \uc804\ub825 \uacc4\uc218\uac00 0.8\uc77c \uacbd\uc6b0 \uc2e4\uc81c \uc804\ub825\uc73c\ub85c \uc57d 400 kW\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4. \uc0b0\uc5c5\uc5d0\uc11c \uc801\uc6a9\ub418\ub294 \uaddc\ubc94 \uc911 \ud558\ub098\ub294 \ubcc0\uc555\uae30\ub97c \uc815\uaca9\uc758 60-80%\ub85c \ubd80\ud558\ub97c \uac78\ub3c4\ub85d \ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub294 \uc99d\uac00\ud558\ub294 \ubd80\ud558\ub97c \uacac\ub51c \uc218 \uc788\ub294 \ub2a5\ub825 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ub610\ud55c, ANSI\/IEEE \ubd80\ud558 \ud45c\ub294 \ubcc0\uc555\uae30\ub97c \ucd5c\ub300 \ubd80\ud558\ub85c \ubd80\ud558\ud560 \uc218 \uc788\ub294 \uc870\uac74\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc774\uc5d0 \uc758\uc874\ud558\uae30 \uc804\uc5d0 \uc81c\uc870\uc5c5\uccb4\uc758 \ubd80\ud558 \uace1\uc120\uc744 \ucc38\uc870\ud558\ub294 \uac83\uc774 \uc5ec\uc804\ud788 \uad8c\uc7a5\ub429\ub2c8\ub2e4.<\/p>\n<h3>500 kVA \ubcc0\uc555\uae30\ub97c \uc704\ud55c \ucf00\uc774\ube14 \ud06c\uae30\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n<p>\uba3c\uc800, \ubcc0\uc555\uae30\uc758 \uc815\uaca9 \uc804\ub958\ub97c \uacc4\uc0b0\ud574\uc57c \ud569\ub2c8\ub2e4(\uc608\ub97c \ub4e4\uc5b4, 480 V\uc5d0\uc11c 601 A\uc5d0 \ud574\ub2f9\ud568) \uadf8\ub9ac\uace0 \ub098\uc11c, \uc5f0\uc18d \uc6b4\uc804\uc744 \uc704\ud574 125% \uc218\uce58\uc5d0 \ub530\ub77c \ucc3e\uc740 \uac12\uc744 \uc870\uc815\ud574\uc57c \ud569\ub2c8\ub2e4. \uadf8 \ud6c4, NEC\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 \uc804\ub958 \uc6a9\ub7c9 \ud45c\uc5d0 \ub530\ub77c \uc804\uc120\uc744 \uc120\ud0dd\ud560 \uc218 \uc788\uc73c\uba70, \uc0ac\uc6a9\ub41c \uc808\uc5f0 \uc720\ud615\uc5d0 \ub530\ub77c \uc801\uc808\ud55c \ubcf4\uc815\uc744 \uc801\uc6a9\ud558\ub294 \uac83\uc744 \uc78a\uc9c0 \ub9d0\uc544\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<h2>\ucc38\uace0 \ubb38\ud5cc<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.nfpa.org\/\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 \uad6d\uac00 \uc804\uae30 \uaddc\uc815 (\uc81c450\uc870, \uc81c250\uc870)<\/a><\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/\" rel=\"nofollow noopener\" target=\"_blank\">IEEE \u2014 C57.12 \uc2dc\ub9ac\uc988, \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \ud45c\uc900 \uc694\uad6c \uc0ac\ud56d<\/a><\/li>\n<li><a href=\"https:\/\/www.energy.gov\/\" rel=\"nofollow noopener\" target=\"_blank\">\ubbf8\uad6d \uc5d0\ub108\uc9c0\ubd80 \u2014 \ubc30\uae09 \ubcc0\uc555\uae30 \ud6a8\uc728 \uae30\uc900<\/a><\/li>\n<li><a href=\"https:\/\/www.osha.gov\/\" rel=\"nofollow noopener\" target=\"_blank\">OSHA \u2014 \uc791\uc5c5 \uad00\ud589\uc744 \uc704\ud55c \uc804\uae30 \uc548\uc804 \uc694\uad6c \uc0ac\ud56d<\/a><\/li>\n<\/ul>\n<h2>\uacb0\ub860<\/h2>\n<p>500 kVA \ubcc0\uc555\uae30\uc5d0 \ub300\ud55c \ub2e8\uc120\ub3c4\ub294 \uadf8\ub9ac \ub9ce\uc544 \ubcf4\uc774\uc9c0 \uc54a\uc744 \uc218 \uc788\uc9c0\ub9cc, \uc774\ub294 \uc804\uae30 \uacc4\uc57d\uc790, \uac80\uc0ac\uad00 \ubc0f \uc720\ud2f8\ub9ac\ud2f0\uc5d0 \uc6b4\uc601, \uc790\ub3d9\ud654, \uc811\uc9c0 \ubc0f \uc911\uc804\uc555 \uc804\uae30 \uc124\uce58\uc758 \ubd84\ubc30\uc5d0 \ub300\ud55c \uc804\uccb4 \uc0c1\ud669\uc744 \uc804\ub2ec\ud558\ub294 \ubb38\uc11c\uc785\ub2c8\ub2e4. \uc791\uc5c5\uc744 \uc62c\ubc14\ub978 \uc21c\uc11c\ub85c \uc218\ud589\ud558\ub294 \uac83\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uccab\uc9f8, \uc11c\ube44\uc2a4 \ubc0f \uacc4\ub7c9\uc744 \uc218\ud589\ud574\uc57c \ud558\uba70; \ub458\uc9f8, \uc11c\ube44\uc2a4 \ucc28\ub2e8\uc774 \uc774\ub8e8\uc5b4\uc838\uc57c \ud569\ub2c8\ub2e4. \ub2e4\uc74c \ub2e8\uacc4\uc5d0\ub294 NEC 450.3(B)\uc5d0 \uae30\ubc18\ud55c 1\ucc28 \uacf5\uae09\uc120 \ubc0f 1\ucc28 \ubcf4\ud638\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uadf8 \ud6c4, 500 kVA \ubcc0\uc555\uae30 \uc790\uccb4\uc5d0 \ub300\ud55c \uc815\ubcf4\uc640 \uc774\ub984\ud310 \ub370\uc774\ud130\uac00 \uc81c\uacf5\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \uc774\ud6c4\uc5d0\ub294 \uacc4\uc0b0\ub41c \uc218\uc694 \ubd80\ud558\uc640 \uad00\ub828\ud558\uc5ec 125%\uc5d0 \ub300\ud55c \uc804\uc120\uc774 \uc81c\uacf5\ub429\ub2c8\ub2e4. \ub3c4\uba74\uc5d0\ub294 \uc815\uaca9, \uc784\ud53c\ub358\uc2a4, \ubca1\ud130 \uadf8\ub8f9, \ud0ed, \ub3c4\uccb4 \ubc0f \uace0\uc7a5 \uc804\ub958\uc5d0 \ub300\ud55c \ubaa8\ub4e0 \uc0ac\uc591 \ub370\uc774\ud130\uac00 \uae30\uc785\ub418\uc5b4\uc57c \ud55c\ub2e4\ub294 \uc810\uc5d0 \uc720\uc758\ud574\uc57c \ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ub3c4\uba74\uc744 \uc791\uc131\ud558\uace0 \ub2e4\ub978 \uc5d4\uc9c0\ub2c8\uc5b4 \ubc0f \uc804\ubb38\uac00, \uc720\ud2f8\ub9ac\ud2f0, AHJ \ub4f1\uc5d0 \uc804\ub2ec\ud558\ub294 \uac83\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>The term &#8220;unifilar diagram,&#8221; which in the United States is referred to as a &#8220;single-line diagram,&#8221; denotes a diagram that illustrates how a 500-kVA transformer connects to the power system, including the source of the power supply in the utility company, methods of primary protection, ratings of the transformer itself, protection, and distribution of the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11514","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/posts\/11514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/comments?post=11514"}],"version-history":[{"count":3,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/posts\/11514\/revisions"}],"predecessor-version":[{"id":11519,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/posts\/11514\/revisions\/11519"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/media\/11515"}],"wp:attachment":[{"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/media?parent=11514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/categories?post=11514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/subian-electric.com\/ko\/wp-json\/wp\/v2\/tags?post=11514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}