{"id":6117,"date":"2022-06-25T18:33:38","date_gmt":"2022-06-25T09:33:38","guid":{"rendered":"http:\/\/ftz.myds.me\/wordpress\/?p=6117"},"modified":"2023-01-07T19:56:50","modified_gmt":"2023-01-07T10:56:50","slug":"%ec%a0%91%ec%a7%80%ec%84%a0-%eb%b0%8f-%eb%b3%b4%ed%98%b8%eb%8f%84%ec%b2%b4-%ea%b5%b5%ea%b8%b0-%ec%84%a0%ec%a0%95","status":"publish","type":"post","link":"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%91%ec%a7%80%ec%84%a0-%eb%b0%8f-%eb%b3%b4%ed%98%b8%eb%8f%84%ec%b2%b4-%ea%b5%b5%ea%b8%b0-%ec%84%a0%ec%a0%95\/","title":{"rendered":"\uc811\uc9c0\uc120 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uad75\uae30 \uc120\uc815\u2055"},"content":{"rendered":"\n<p><meta charset=\"utf-8\"><strong><em><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%91%ec%a7%80%ec%84%a0-%ec%a0%91%ec%a7%80%eb%b4%89\/\" target=\"_blank\" rel=\"noopener\">\uc811\uc9c0\uc120 \uc811\uc9c0\ubd09<\/a> <\/em><\/strong>\u2736<\/p>\n\n\n\n<p><strong>\uc811\uc9c0\uc120 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uad75\uae30 \uc120\uc815<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\uc811\uc9c0\uc120 \uad75\uae30 \uc0b0\uc815\uae30\ucd08\ub97c \uc801\uc6a9\ud558\uc5ec \uadf8\ub9bc\uc5d0\uc11c \ubcc0\uc555\uae30 2\ucc28\uce21 \uc911\uc131\uc810 \uc811\uc9c0\uc120\uacfc \ubd80\ud558\uae30\uae30\uc758 \uc811\uc9c0\uc120 \ucd5c\uc18c \uad75\uae30\ub97c \uc0b0\uc815\ud558\uc2dc\uc624.<\/p><\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"329\" height=\"80\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1100\u1165\u11ab96_1-\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169.png\" alt=\"\" class=\"wp-image-10325\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1100\u1165\u11ab96_1-\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169.png 329w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1100\u1165\u11ab96_1-\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169-300x73.png 300w\" sizes=\"(max-width: 329px) 100vw, 329px\" \/><figcaption>\uac7496_1 \ubcc0\uc555\uae30\ub2e8\uc120\uacb0\uc120\ub3c4<\/figcaption><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\uc811\uc9c0\uc124\ube44 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uc120\uc815\ubc29\ubc95\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uc2dc\uc624.<\/p><\/blockquote>\n\n\n\n<h3>\uc811\uc9c0\uc120\uc758 \uad75\uae30 \uacb0\uc815 3\ub300 \uc694\uc18c<\/h3>\n\n\n\n<p>1) \uc804\ub958\uc6a9\ub7c9 2) \uae30\uacc4\uc801 \uac15\ub3c4 3) \ub0b4\uc2dd\uc131<\/p>\n\n\n\n<h3>\ud2b9\uace0\uc555 \uae30\uae30\uc758 \uc811\uc9c0(1\uc885 \uc811\uc9c0\uc120) <\/h3>\n\n\n\n<p>\u2026\u2026\u2026\u2026 IEC<\/p>\n\n\n\n<p>\uc811\uc9c0\uc120\uc5d0 \ud750\ub974\ub294 \uc804\ub958\uc5d0 \uc758\ud574\uc11c \uc808\uc5f0\ubb3c(\ud53c\ubcf5)\uc774 \uc5f4\uc801, \uae30\uacc4\uc801\uc73c\ub85c \uc190\uc0c1\ub418\uc9c0 \uc54a\ub294 \uc811\uc9c0\uc120\uc758 \uad75\uae30 \uc0b0\uc815\uc774 \uc694\uad6c\ub428<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[A=\\frac{\\sqrt{t_s}}{\\sqrt{\\frac{Q}{\\alpha r}\\log_e(\\frac{T_m-T_{\\alpha}}{K_0+T_{\\alpha}}+1)}}\\times I_g\\]\\[=\\frac{\\sqrt{t_s}}{K}\\times I_g[mm^2]\\]<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/vendor\/regenerator-runtime.min.js?ver=0.13.9' id='regenerator-runtime-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/vendor\/wp-polyfill.min.js?ver=3.15.0' id='wp-polyfill-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/hooks.min.js?ver=4169d3cf8e8d95a3d6d5' id='wp-hooks-js'><\/script>\n<script src='http:\/\/ftz.myds.me\/wordpress\/wp-includes\/js\/dist\/i18n.min.js?ver=9e794f35a71bb98672ae' id='wp-i18n-js'><\/script>\n<script id='wp-i18n-js-after'>\nwp.i18n.setLocaleData( { 'text direction\\u0004ltr': [ 'ltr' ] } );\n<\/script>\n<script  async src='https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjax\/2.7.7\/MathJax.js?config=TeX-MML-AM_CHTML' id='mathjax-js'><\/script>\n<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\u2460\uc808\uc5f0\ubb3c\uc758 \ub2e8\uc2dc\uac04 \ud5c8\uc6a9\uc628\ub3c4[T_m]\\]\\[\u2461\uc8fc\uc704\uc628\ub3c4(T_{\\alpha}) : \uc625\ub0b430\u2103 \uc625\uc678(\uc9c1\uc0ac\uc77c\uad11)55\u2103\\]\\[\u2462\ub3c4\uccb4\uc758 \ube44\uc5f4(Q) : 3.422(\uc5f0\ub3d9\uc120)\\]\\[\u246320\u2103\uc5d0\uc11c \ub3c4\uccb4\uc758 \uc800\ud56d\uc628\ub3c4 \uacc4\uc218(\\alpha):0.00393(\uc5f0\ub3d9\uc120)\\]\n\\[\u246420\u2103\uc5d0\uc11c \ub3c4\uccb4\uc758 \uc800\ud56d(r):0.17241(\uc5f0\ub3d9\uc120)\\]\\[\u2465K_0:234.5(\uc5f0\ub3d9\uc120)\\]\\[\u2466\uc811\uc9c0\uc120\uc5d0 \ud750\ub974\ub294 \ucd5c\ub300\uc804\ub958(I_g)\\]\\[\u2467I_g\uc758 \uc9c0\uc18d\ud1b5\uc804\uc2dc\uac04(t_s) \\]\\[\\cdot\\cdot\\cdot 22kV,22.9kV\uace0\uc7a5\uc81c\uac70\uc2dc\uac041.1\ucd08\\]\\[\u2468\uc808\uc5f0\ubb3c\uc885\ub958\uc5d0 \ub530\ub978\uc0c1\uc218(K)\\]<\/div>\n\n\n\n<p>[\ud45c. \uc808\uc5f0\ubb3c\uc758 \ud5c8\uc6a9\uc628\ub3c4\uc640 \uc0c1\uc218]<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"629\" height=\"232\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d.-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116e.png\" alt=\"\" class=\"wp-image-10326\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d.-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116e.png 629w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d.-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116e-300x111.png 300w\" sizes=\"(max-width: 629px) 100vw, 629px\" \/><\/figure>\n\n\n\n<h3>3\uc885 \uc811\uc9c0\uc120<\/h3>\n\n\n\n<p> \u2026\u2026\u2026\u2026 \ub0b4\uc120\uaddc\uc815<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[A=\\sqrt{\\frac{0.008\\times t_s}{\\Delta T}}\\times I\\backsimeq 0.0496\\times I_n[mm^2]\\]<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\u2460\uc811\uc9c0\uc120\uc758 \ud5c8\uc6a9\uc628\ub3c4 \uc0c1\uc2b9(\\Delta T=T_m-T_\\alpha) \\]\\[\u2192 160\u2103-30\u2103=130\u2103 \uc870\uac74\\]\n\\[\u2461\uc811\uc9c0\uc120\uc5d0 \ud750\ub974\ub294 \ucd5c\ub300\uc804\ub958(I=20I_n) \\]\\[\u2192 \uacfc\uc804\ub958\ucc28\ub2e8\uae30 \uc815\uaca9\uc804\ub958(I_n)\\]\n\uc811\uc9c0\ud558\ub294 \uae30\uacc4\uae30\uad6c\uc758 \uc800\uc555\uc804\ub85c \uc804\uc6d0\uce21\uc5d0 \uc2dc\uc124\ub41c \uacfc\uc804\ub958\ucc28\ub2e8\uae30 \uc911\uc5d0\uc11c \ucd5c\uc18c \uc801\uaca9\uc804\ub958\ub97c \uae30\uc900\uc73c\ub85c \uc120\uc815\n\\[\u2462I\uc758 \uc9c0\uc18d\ud1b5\uc804\uc2dc\uac04(t_s)\\]\\[\\cdot\\cdot\\cdot 20I_n\uc5d0\uc11c \uacfc\uc804\ub958 \ucc28\ub2e8\uae30 0.1\ucd08 \ucc28\ub2e8\uc870\uac74\\]<\/div>\n\n\n\n<h3>2\uc885 \uc811\uc9c0\uc120<\/h3>\n\n\n\n<p> \u2026\u2026\u2026\u2026 \ub0b4\uc120\uaddc\uc815<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[A=\\sqrt{\\frac{0.08\\times t_s}{\\Delta T}}\\times I\\backsimeq 0.0496\\times I_n[mm^2]\\]<\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\u2460\uc811\uc9c0\uc120\uc758 \ud5c8\uc6a9\uc628\ub3c4 \uc0c1\uc2b9(\\Delta T=T_m-T_\\alpha)\\]\\[ \u2192 160\u2103-30\u2103=130\u2103 \uc870\uac74\\]\n\\[\u2461\uc811\uc9c0\uc120\uc5d0 \ud750\ub974\ub294 \ucd5c\ub300\uc804\ub958(I=20I_n)\\]\\[ \u2192 \ubcc0\uc555\uae30 1\uc0c1\ubd84 \uc6a9\ub7c9(I_n)\uae30\uc900\\]\n\\[\u2462I\uc758 \uc9c0\uc18d\ud1b5\uc804\uc2dc\uac04(t_s)\\]\\[\\cdot\\cdot\\cdot 20I_n\uc5d0\uc11c \uacfc\uc804\ub958 \ucc28\ub2e8\uae30 0.1\ucd08 \ucc28\ub2e8\uc870\uac74\\]\n<\/div>\n\n\n\n<h3>\ubcf4\ud638\ub3c4\uccb4\uc758 \ucd5c\uc18c \ub2e8\uba74\uc801<\/h3>\n\n\n\n<p> \u2026\u2026\u2026\u2026 IEC<\/p>\n\n\n\n<p>\ubcf4\ud638\ub3c4\uccb4(\uc811\uc9c0\uc120 \ud3ec\ud568)\uc758 \ub2e8\uba74\uc801\uc740 \ub2e4\uc74c (1), (2)\ud56d \uc911 \uc5b4\ub290 \ud55c \uac00\uc9c0 \ubc29\ubc95\uc744 \uc120\ud0dd\ud558\uc5ec \uc0ac\uc6a9\ud560 \uc218\uac00 \uc788\ub2e4. \ub450 \ud56d \ubaa8\ub450 (3)\ud56d\uc744 \uace0\ub824\ud574\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p>\u2460 \uacc4\uc0b0\uc2dd\uc5d0 \uc758\ud55c \ubcf4\ud638\ub3c4\uccb4\uc758 \ucd5c\uc18c \ub2e8\uba74\uc801 \uc0b0\ucd9c<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[A=\\frac{\\sqrt{t_s}}{K}\\times I_g(0\\le t_s\\le 5)\\]<\/div>\n\n\n\n<p>[\ud45c] \uc808\uc5f0\ubb3c\uc758 \ud5c8\uc6a9\uc628\ub3c4\uc640 \uc0c1\uc218(K)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"630\" height=\"203\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116eK.png\" alt=\"\" class=\"wp-image-10327\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116eK.png 630w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1111\u116d-\u110c\u1165\u11af\u110b\u1167\u11ab\u1106\u116e\u11af\u110b\u1174-\u1112\u1165\u110b\u116d\u11bc\u110b\u1169\u11ab\u1103\u1169\u110b\u116a-\u1109\u1161\u11bc\u1109\u116eK-300x97.png 300w\" sizes=\"(max-width: 630px) 100vw, 630px\" \/><\/figure>\n\n\n\n<p>\u2461 IEC 60364-5-54 \ud45c\uc5d0 \uc758\ud55c \ubcf4\ud638\ub3c4\uccb4 \ucd5c\uc18c \ub2e8\uba74\uc801 \uc0b0\uc815<\/p>\n\n\n\n<p>\uc774 \ud45c\uc5d0 \uc758\ud574\uc11c \uc0b0\uc815\uc2dc (1)\ud56d\uc5d0 \uc801\ud569\ud55c\uc9c0 \uace0\ub824\ud560 \ud544\uc694\uac00 \uc5c6\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"578\" height=\"179\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1169\u1112\u1169\u1103\u1169\u110e\u1166-\u110e\u116c\u1109\u1169-\u1103\u1161\u11ab\u1106\u1167\u11ab\u110c\u1165\u11a8-\u1109\u1161\u11ab\u110c\u1165\u11bc.png\" alt=\"\" class=\"wp-image-10328\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1169\u1112\u1169\u1103\u1169\u110e\u1166-\u110e\u116c\u1109\u1169-\u1103\u1161\u11ab\u1106\u1167\u11ab\u110c\u1165\u11a8-\u1109\u1161\u11ab\u110c\u1165\u11bc.png 578w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1169\u1112\u1169\u1103\u1169\u110e\u1166-\u110e\u116c\u1109\u1169-\u1103\u1161\u11ab\u1106\u1167\u11ab\u110c\u1165\u11a8-\u1109\u1161\u11ab\u110c\u1165\u11bc-300x93.png 300w\" sizes=\"(max-width: 578px) 100vw, 578px\" \/><\/figure>\n\n\n\n<p>\u2462 \ubcf4\ud638\ub3c4\uccb4\uc758 \ucd5c\uc18c \ub2e8\uba74\uc801<\/p>\n\n\n\n<p>\ubcf4\ud638\ub3c4\uccb4\uac00 \uc804\uc6d0 \ucf00\uc774\ube14 \ub610\ub294 \ucf00\uc774\ube14 \uc6a9\uae30\uc758 \uc77c\ubd80\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uc5d0\ub294 \ub2e8\uba74\uc801\uc744 \uc5b4\ub5a0\ud55c \uacbd\uc6b0\uc5d0\ub3c4 \ub2e4\uc74c \uac12 \uc774\uc0c1\uc73c\ub85c \ud558\uc5ec\uc57c \ud55c\ub2e4.<\/p>\n\n\n\n<p>\u25cb \uc8fc \ub4f1\uc804\uc704 \ubcf8\ub529\ub3c4\uccb4\uc758 \ub2e8\uba74\uc801<\/p>\n\n\n\n<p>-&gt;\uc5f0\ub3d9\uc120, 16[\u339f] \uc774\uc0c1<\/p>\n\n\n\n<p>\u25cb \ubcf4\uc870 \ub4f1\uc804\uc704 \ubcf8\ub529\ub3c4\uccb4\uc758 \ub2e8\uba74\uc801<\/p>\n\n\n\n<p>-&gt;\uae30\uacc4\uc801 \ubcf4\ud638(\ubc29\ud638)\uac00 \ub418\uc5b4 \uc788\ub294 \uacbd\uc6b0: \uc5f0\ub3d9\uc120 2.5[\u339f] \uc774\uc0c1<\/p>\n\n\n\n<p>\uae30\uacc4\uc801 \ubcf4\ud638(\ubc29\ud638)\uac00 \ub418\uc5b4 \uc788\uc9c0 \uc54a\uc740 \uacbd\uc6b0: \uc5f0\ub3d9\uc120 4.0[\u339f] \uc774\uc0c1<\/p>\n\n\n\n<p><\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>\uc804\uc6d0\uce21 \ubc0f \ubc30\uc804\uc120\ub85c \uc784\ud53c\ub358\uc2a4\ub294 \ubb34\uc2dc<br>\uc804\uc6d0\uce21 \ubcc0\uc555\uae30: 154\/22.9kV, 60[MVA], %Z=14.5[%]<br>22.9kV\ub85c \uc218\uc804\ud558\ub294 \ud2b9\uace0\uc555 \uc124\ube44\uc758 1\uc885 \uc811\uc9c0\uc120\uc758 \uad75\uae30\ub97c \uc0b0\uc815\ud558\ub77c.<br>\ub2e8, \uc811\uc9c0\uc120\uc740 \uc625\ub0b4\uc5d0 \uc2dc\uc124\ud558\uba70, PVC \uc808\uc5f0\uc804\uc120\uc744 \uc0ac\uc6a9\ud558\uba70, \uace0\uc7a5\uc81c\uac70 \uc2dc\uac04\uc740 1.1\ucd08<\/p><\/blockquote>\n\n\n\n<h4>1.\ucd5c\ub300\uace0\uc7a5\uc804\ub958(Ia)<\/h4>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_g=3I_0=3\\times \\frac{100}{\\%Z_1+\\%Z_2+\\%Z_0}\\times  I_n\\]\\[=3\\times \\frac{100}{14.5+14.5+14.5}\\times \\frac{60\\times 10^3}{\\sqrt{3}\\times 22.9}\\]\\[=10,430[A]\\]<\/div>\n\n\n\n<h4>2.\uc811\uc9c0\uc120\uc758 \uad75\uae30<\/h4>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[PVC\uc808\uc5f0\uc804\uc120(\uc625\ub0b4)\\]\\[A_1=\\frac{\\sqrt{t_s}}{K}\\times I_g=\\frac{\\sqrt{1.1}}{143}\\times 10,430=76[\u33a3]\\]\n\\[\ub098\uc5f0\ub3d9\uc120(\uc625\uc678)\\]\\[A_2=\\frac{\\sqrt{t_s}}{K}\\times I_g=\\frac{\\sqrt{1.1}}{276}\\times10,430=40[\u33a3]\\]<\/div>\n\n\n\n<p>\uc704\uc758 \uacc4\uc0b0\ub41c \uac12\uc5d0\uc11c 30[%] \uc5ec\uc720\ub97c \ub450\uace0\uc11c \uc811\uc9c0\uc120\uc744 \uc120\uc815\ud558\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud558\ub2e4.<\/p>\n\n\n\n<p>[\ud45c.] IEC \uc804\uc120\uc758 \uacf5\uce6d \ub2e8\uba74\uc801<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th class=\"has-text-align-center\" data-align=\"center\">1.5\u339f<\/th><th class=\"has-text-align-center\" data-align=\"center\">2.5<\/th><th class=\"has-text-align-center\" data-align=\"center\">4<\/th><th class=\"has-text-align-center\" data-align=\"center\">6<\/th><th class=\"has-text-align-center\" data-align=\"center\">10<\/th><th class=\"has-text-align-center\" data-align=\"center\">16<\/th><th class=\"has-text-align-center\" data-align=\"center\">25<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">35<\/td><td class=\"has-text-align-center\" data-align=\"center\">50<\/td><td class=\"has-text-align-center\" data-align=\"center\">70<\/td><td class=\"has-text-align-center\" data-align=\"center\">95<\/td><td class=\"has-text-align-center\" data-align=\"center\">120<\/td><td class=\"has-text-align-center\" data-align=\"center\">150<\/td><td class=\"has-text-align-center\" data-align=\"center\">185<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"348\" height=\"131\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169.png\" alt=\"\" class=\"wp-image-10329\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169.png 348w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u1107\u1167\u11ab\u110b\u1161\u11b8\u1100\u1175\u1103\u1161\u11ab\u1109\u1165\u11ab\u1100\u1167\u11af\u1109\u1165\u11ab\u1103\u1169-300x113.png 300w\" sizes=\"(max-width: 348px) 100vw, 348px\" \/><figcaption>\ubcc0\uc555\uae30\ub2e8\uc120\uacb0\uc120\ub3c4<\/figcaption><\/figure><\/div>\n\n\n\n<h3>1. \ubcc0\uc555\uae30\uc758 2\uc885\uc811\uc9c0\uc120\uc758 \uad75\uae30 \uc120\uc815(2\uc885 \uc811\uc9c0\uacf5\uc0ac)<\/h3>\n\n\n\n<p>\ubcc0\uc555\uae30 3\uc0c1 300kVA(22.9kV\/380V-220V)<\/p>\n\n\n\n<p>\uc800\uc555\uce21 \ub2e4\uc120\uc2dd\uc778 \uacbd\uc6b0\ub294 \uadf8 \uc0ac\uc6a9\uc804\uc555 \uc911 \ud070 \uac12\uc744 \uc801\uc6a9. \ub2e8 380V\ub294 \uc81c\uc678<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\to \ubcc0\uc555\uae30 1\uc0c1\ubd84\uc758 \uc6a9\ub7c9=\\frac{1,500}{3}=500[kVA]\\]<\/div>\n\n\n\n<h4 class=\"has-text-align-center\">\ubcc0\uc555\uae30 1\uc0c1\ubd84\uc758 \uc6a9\ub7c9\uc774\ub780<\/h4>\n\n\n\n<p>3\uc0c1 \ubcc0\uc555\uae30 : \uc815\uaca9\uc6a9\ub7c9\uc758 1\/3<br>\ub2e8\uc0c1 \ubcc0\uc555\uae30\ub85c 3\uc0c1 \ubcc0\uc555\uae30 \uacb0\uc120\ud558\ub294 \uacbd\uc6b0 : \ub2e8\uc0c1 \ubcc0\uc555\uae30\uc758 \uc6a9\ub7c9<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_n=\\frac{500\\times 10^3}{220}=2,273[A]\\]\n\\[A=0.0496\\times I_n[\u33a3], \\]\\[A=0.0496\\times 2,273=112.7[\u33a3]\\to 120[\u33a3]\\]<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h3>2. \ubd80\ud558\uae30\uae30 \uc811\uc9c0\uc120\uc758 \uad75\uae30 \uc120\uc815(3\uc885 \uc811\uc9c0\uacf5\uc0ac)<\/h3>\n\n\n\n<p>\uc811\uc9c0\ud558\ub294 \uae30\uacc4\uae30\uad6c\uc758 \uc800\uc555\uc804\ub85c \uc804\uc6d0\uce21\uc5d0 \uc2dc\uc124\ub41c \uacfc\uc804\ub958\ucc28\ub2e8\uae30 \uc911\uc5d0\uc11c \ucd5c\uc18c \uc801\uaca9\uc804\ub958\ub97c \uae30\uc900\uc73c\ub85c \uc120\uc815<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[A=0.0496\\times I_n[\u33a3]\\]\\[A=0.0496\\times 600=29.8[\u33a3]\\to35[\u33a3]\\]<\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"768\" height=\"248\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u110e\u116c\u1109\u1169-\u110c\u1165\u11a8\u1100\u1167\u11a8\u110c\u1165\u11ab\u1105\u1172\u1105\u1173\u11af-\u1100\u1175\u110c\u116e\u11ab\u110b\u1173\u1105\u1169-\u1109\u1165\u11ab\u110c\u1165\u11bc.png\" alt=\"\" class=\"wp-image-10330\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u110e\u116c\u1109\u1169-\u110c\u1165\u11a8\u1100\u1167\u11a8\u110c\u1165\u11ab\u1105\u1172\u1105\u1173\u11af-\u1100\u1175\u110c\u116e\u11ab\u110b\u1173\u1105\u1169-\u1109\u1165\u11ab\u110c\u1165\u11bc.png 768w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/07\/\u110e\u116c\u1109\u1169-\u110c\u1165\u11a8\u1100\u1167\u11a8\u110c\u1165\u11ab\u1105\u1172\u1105\u1173\u11af-\u1100\u1175\u110c\u116e\u11ab\u110b\u1173\u1105\u1169-\u1109\u1165\u11ab\u110c\u1165\u11bc-300x97.png 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<h6><strong><em>\u2605<a href=\"http:\/\/ftz.myds.me\/wordpress\/p-%ec%a0%91%ec%a7%80\/\">\uc811\uc9c0<\/a> <br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%91%ec%a7%80%ec%9d%98-%eb%aa%a9%ec%a0%81\/\">\uc811\uc9c0\uc758 \ubaa9\uc801<\/a>\u2055<br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%91%ec%b4%89%ec%a0%84%ec%95%95%ea%b3%bc-%eb%b3%b4%ed%8f%ad%ec%a0%84%ec%95%95-2\/\">\uc811\ucd09\uc804\uc555\uacfc \ubcf4\ud3ed\uc804\uc555\u2055<br><\/a><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%93%b1%ec%a0%84%ec%9c%84-%eb%b3%b8%eb%94%a9-2\/\">\ub4f1\uc804\uc704 \ubcf8\ub529\u2055<br><\/a><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%8f%85%eb%a6%bd%ec%a0%91%ec%a7%80%ec%99%80-%ea%b3%b5%ec%9a%a9-%ed%86%b5%ed%95%a9%ec%a0%91%ec%a7%80-%ec%8b%9c%ec%8a%a4%ed%85%9c\/\">\ub3c5\ub9bd\uc811\uc9c0\uc640 \uacf5\uc6a9\/\ud1b5\ud569\uc811\uc9c0 \uc2dc\uc2a4\ud15c\u2055<br><\/a><a href=\"http:\/\/ftz.myds.me\/wordpress\/ks-c-iec-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d\/\">KS C IEC \uc811\uc9c0\ubc29\uc2dd\u2055<br><\/a><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%91%ec%a7%80%ec%84%a0-%eb%b0%8f-%eb%b3%b4%ed%98%b8%eb%8f%84%ec%b2%b4-%ea%b5%b5%ea%b8%b0-%ec%84%a0%ec%a0%95\/\">\uc811\uc9c0\uc120 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uad75\uae30 \uc120\uc815\u2055<br><\/a><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%8c%80%ec%a7%80%ec%a0%80%ed%95%ad%eb%a5%a0%ea%b3%bc-%ec%a0%91%ec%a7%80%ec%a0%80%ed%95%ad-%ec%b8%a1%ec%a0%95\/\">\ub300\uc9c0\uc800\ud56d\ub960\uacfc \uc811\uc9c0\uc800\ud56d \uce21\uc815<\/a>\u2055<br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%b3%80%ec%a0%84%ec%86%8c-%ec%a0%91%ec%a7%80%ec%84%a4%ea%b3%84\/\">\ubcc0\uc804\uc18c \uc811\uc9c0\uc124\uacc4<\/a>\u2055<br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a4%91%ec%84%b1%ec%a0%90-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d-2\/\">\uc911\uc131\uc810 \uc811\uc9c0\ubc29\uc2dd<\/a><\/em><\/strong> \u2055<\/h6>\n\n\n\n<p><strong><em>\u2605<a rel=\"noopener\" href=\"http:\/\/ftz.myds.me\/wordpress\/aq-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d%ec%9d%98-%ea%b2%b0%ec%a0%95%ed%98%95%ed%83%9c%ec%97%90%eb%94%b0%eb%a5%b8\/\" target=\"_blank\"> <\/a><\/em><\/strong><a href=\"https:\/\/cq4l.com\/ap-%EC%A0%91%EC%A7%80%EB%B0%A9%EB%B2%95-%EA%B2%B0%EC%A0%95%EB%AA%A9%EC%A0%81%EC%97%90-%EB%94%B0%EB%A5%B8\/\">\uc811\uc9c0\ubc29\ubc95\uacb0\uc815<\/a>\u00a0(EM)<strong><em><br><\/em><\/strong>(\ubaa9\uc801\uc5d0\ub530\ub978)<br>N\u00a0<a href=\"https:\/\/cq4l.com\/%ec%a4%91%ec%84%b1%ec%a0%90-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d\/\">\uc911\uc131\uc810 \uc811\uc9c0\ubc29\ubc95<\/a><br>R\u00a0<a href=\"https:\/\/cq4l.com\/%ec%9c%a0%ed%9a%a8%ec%a0%91%ec%a7%80%ec%99%80-%eb%b9%84%ec%9c%a0%ed%9a%a8%ec%a0%91%ec%a7%80\/\">\uc720\ud6a8\uc811\uc9c0\uc640 \ube44\uc720\ud6a8\uc811\uc9c0<\/a><br>B\u00a0<a href=\"https:\/\/cq4l.com\/iec-60364-3-%eb%b0%b0%ec%a0%84%ea%b3%84%ed%86%b5%ec%9d%98-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d\/\">\ubc30\uc804\uacc4\ud1b5\uc758 \uc811\uc9c0<\/a>(<a href=\"https:\/\/cq4l.com\/iec-60364-3-%eb%b0%b0%ec%a0%84%ea%b3%84%ed%86%b5%ec%9d%98-%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d\/\">IEC 60364-3\u00a0<\/a>)<\/p>\n\n\n\n<p>(\ud615\ud0dc\uc5d0\ub530\ub978)<br>O\u00a0<a href=\"https:\/\/cq4l.com\/%eb%8b%a8%eb%8f%85%ec%a0%91%ec%a7%80%ec%99%80-%ea%b3%b5%ec%9a%a9%ec%a0%91%ec%a7%80\/\">\ub2e8\ub3c5\uc811\uc9c0\uc640 \uacf5\uc6a9\uc811\uc9c0<\/a><br>S\u00a0<a href=\"https:\/\/cq4l.com\/%EA%B5%AC%EC%A1%B0%EC%B2%B4-%EC%A0%91%EC%A7%80%EC%84%A4%EA%B3%84-%EC%8B%9C-%EA%B2%80%ED%86%A0%EC%82%AC%ED%95%AD\">\uad6c\uc870\uccb4 \uc811\uc9c0\uc124\uacc4 \uc2dc \uac80\ud1a0\uc0ac\ud56d<\/a><br>T\u00a0<a href=\"https:\/\/cq4l.com\/%ed%86%b5%ed%95%a9-%ea%b3%b5%ed%86%b5%ec%a0%91%ec%a7%80%eb%b0%a9%ec%8b%9d\/\">\ud1b5\ud569 \uacf5\ud1b5\uc811\uc9c0\ubc29\uc2dd<\/a><br>E\u00a0<a href=\"https:\/\/cq4l.com\/%eb%93%b1%ec%a0%84%ec%9c%84-%eb%b3%b8%eb%94%a9\/\">\ub4f1\uc804\uc704 \ubcf8\ub529<\/a><br>G\u00a0<a href=\"https:\/\/cq4l.com\/%ec%a0%91%ec%a7%80%ec%84%a0-%ec%a0%91%ec%a7%80%eb%b4%89\/\">\uc811\uc9c0\uc120 \uc811\uc9c0\ubd09<\/a><br><br>T\u00a0<a href=\"https:\/\/cq4l.com\/%ec%a0%91%ec%b4%89%ec%a0%84%ec%95%95%ea%b3%bc-%eb%b3%b4%ed%8f%ad%ec%a0%84%ec%95%95\/\">\uc811\ucd09\uc804\uc555\uacfc \ubcf4\ud3ed\uc804\uc555<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc811\uc9c0\uc120 \uc811\uc9c0\ubd09 \u2736 \uc811\uc9c0\uc120 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uad75\uae30 \uc120\uc815 \uc811\uc9c0\uc120 \uad75\uae30 \uc0b0\uc815\uae30\ucd08\ub97c \uc801\uc6a9\ud558\uc5ec \uadf8\ub9bc\uc5d0\uc11c \ubcc0\uc555\uae30 2\ucc28\uce21 \uc911\uc131\uc810 \uc811\uc9c0\uc120\uacfc \ubd80\ud558\uae30\uae30\uc758 \uc811\uc9c0\uc120 \ucd5c\uc18c \uad75\uae30\ub97c \uc0b0\uc815\ud558\uc2dc\uc624. \uc811\uc9c0\uc124\ube44 \ubc0f \ubcf4\ud638\ub3c4\uccb4 \uc120\uc815\ubc29\ubc95\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uc2dc\uc624. \uc811\uc9c0\uc120\uc758 \uad75\uae30 \uacb0\uc815 3\ub300 \uc694\uc18c 1) \uc804\ub958\uc6a9\ub7c9 2) \uae30\uacc4\uc801 \uac15\ub3c4 3) \ub0b4\uc2dd\uc131 \ud2b9\uace0\uc555 \uae30\uae30\uc758 \uc811\uc9c0(1\uc885 \uc811\uc9c0\uc120) \u2026\u2026\u2026\u2026 IEC \uc811\uc9c0\uc120\uc5d0 \ud750\ub974\ub294 \uc804\ub958\uc5d0 \uc758\ud574\uc11c \uc808\uc5f0\ubb3c(\ud53c\ubcf5)\uc774 \uc5f4\uc801, \uae30\uacc4\uc801\uc73c\ub85c \uc190\uc0c1\ub418\uc9c0 \uc54a\ub294 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[510],"tags":[],"_links":{"self":[{"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/posts\/6117"}],"collection":[{"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/comments?post=6117"}],"version-history":[{"count":0,"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/posts\/6117\/revisions"}],"wp:attachment":[{"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/media?parent=6117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/categories?post=6117"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ftz.myds.me\/wordpress\/wp-json\/wp\/v2\/tags?post=6117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}