{"id":15442,"date":"2022-10-20T15:42:44","date_gmt":"2022-10-20T06:42:44","guid":{"rendered":"http:\/\/ftz.myds.me\/wordpress\/?p=15442"},"modified":"2023-01-02T21:16:44","modified_gmt":"2023-01-02T12:16:44","slug":"3%ec%83%81-%eb%8b%a8%eb%9d%bd-%ec%98%88%ec%a0%9c1","status":"publish","type":"post","link":"http:\/\/ftz.myds.me\/wordpress\/3%ec%83%81-%eb%8b%a8%eb%9d%bd-%ec%98%88%ec%a0%9c1\/","title":{"rendered":"\uc608\uc81c1(\uc804\ub825\uacc4\ud1b5)\u2055"},"content":{"rendered":"\n<h6><meta charset=\"utf-8\"><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%8c%80%ec%b9%ad-%eb%8b%a8%eb%9d%bd%ec%a0%84%eb%a5%98\/\">\ub300\uce6d \ub2e8\ub77d\uc804\ub958<\/a>\/<a href=\"http:\/\/ftz.myds.me\/wordpress\/3%ec%83%81-%eb%8b%a8%eb%9d%bd-%ec%98%88%ec%a0%9c1\/\">\uc608\uc81c(\uc804\ub825\uacc4\ud1b5)<\/a>\/<a href=\"http:\/\/ftz.myds.me\/wordpress\/3%ec%83%81-%eb%8b%a8%eb%9d%bd-%ec%98%88%ec%a0%9c2\/\">\uc608\uc81c(\ubc1c\uc804\uae30)<\/a>\/<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%b0%a8%eb%8b%a8%ea%b8%b0%ec%9a%a9%eb%9f%89%ea%b3%84%ec%82%b0-%ec%98%88%ec%a0%9c3\/\">\uc608\uc81c(\ucc28\ub2e8\uae30)<\/a>\/<a href=\"http:\/\/ftz.myds.me\/wordpress\/3%ec%83%81-%eb%8b%a8%eb%9d%bd%ea%b3%a0%ec%9e%a5-%ec%98%88%ec%a0%9c4\/\">\uc608\uc81c(\uc774\uc911\ubaa8\uc120)<\/a><\/h6>\n\n\n\n<p class=\"has-text-align-right\">\ub300\uce6d \ub2e8\ub77d\uc804\ub958 \uc608\uc81c1<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>22.9 kV \uc218\uc804\uacc4\ud1b5\uc5d0\uc11c \ub2e4\uc74c \uc870\uac74\uc5d0 \ub300\ud558\uc5ec F1, F2\uc5d0\uc11c\uc758 3\uc0c1 \ub2e8\ub77d\uc804\ub958\ub97c \uacc4\uc0b0\ud558\uace0, \ucc28\ub2e8\uae30\uc758 \uc885\ub958, \uc815\uaca9\uc804\ub958 \ubc0f \uc815\uaca9\ucc28\ub2e8\uc6a9\ub7c9\uc744 \uc120\uc815\ud558\uc2dc\uc624 <br>\u2981100MVA \uae30\uc900\uc73c\ub85c PU\ubc95\uc744 \uc0ac\uc6a9\ud55c\ub2e4. <br>\u298122.9\/6.6kV \ubcc0\uc555\uae30\uc758 \uc784\ud53c\ub358\uc2a4\ub294 6% <br>\u29816.6\/0.38kV \ubcc0\uc555\uae30\uc758 \uc784\ud53c\ub358\uc2a4\ub294 3.5% (\uc81c\uc791\uc624\ucc28\ub97c \uace0\ub824) <br>\u2981\uc804\ub3d9\uae30\uc758 \uae30\ub3d9\uc804\ub958\ub294 \uc804\ubd80\ud558 \uc804\ub958\uc758 600%\ub85c \uacc4\uc0b0 <br>\u2981\uc120\ub85c\uc758 \uc784\ud53c\ub358\uc2a4\ub294 \ubb34\uc2dc\ud55c\ub2e4.<\/p><\/blockquote>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c11.png\" alt=\"\" class=\"wp-image-15443\" width=\"256\" height=\"343\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c11.png 763w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c11-224x300.png 224w\" sizes=\"(max-width: 256px) 100vw, 256px\" \/><\/figure><\/div>\n\n\n\n<h4>\uae30\uc900\uc6a9\ub7c9\uc73c\ub85c \ud658\uc0b0<\/h4>\n\n\n\n<p>1) \uc804\uc6d0<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[z_1=\\frac{P_b}{P_s}=\\frac{100}{1000}=0.1[pu]\\]<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<p>2) 22.9\/6.6kV \ubcc0\uc555\uae30<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[z_2=\\frac{100}{10}\\times 0.06=0.6[pu]\\]<\/div>\n\n\n\n<p>3) 6.6\/0.38kV \ubcc0\uc555\uae30<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[z_3=\\frac{100}{1}\\times 0.035=3.5[pu]\\]<\/div>\n\n\n\n<p>4) \uace0\uc555\uc804\ub3d9\uae30<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[x_{d1}&#8221;=\\frac{1}{6}=0.167[pu]\\]<\/div>\n\n\n\n<p class=\"has-text-align-center\">&#8230;\uc804\ubd80\ud558\uc804\ub958\uc758 6\ubc30 \uace0\ub824<\/p>\n\n\n\n<ul><li>First cycle=0.167\u00d71.0=0.167[pu]<\/li><\/ul>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\to \\frac{100}{5}\\times 0.167=3.34[pu]\\]<\/div>\n\n\n\n<ul><li>Interrupting cycle=0.167\u00d71.5=0.25[pu]<\/li><\/ul>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\to\\frac{100}{5}\\times 0.25=5[pu]\\]<\/div>\n\n\n\n<p>5) \uc800\uc555 \uc804\ub3d9\uae30<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[x_{d2}&#8221;=\\frac{1}{6}=0.167[pu]\\]<\/div>\n\n\n\n<p class=\"has-text-align-center\">&#8230;\uc804\ubd80\ud558\uc804\ub958\uc758 6\ubc30 \uace0\ub824<\/p>\n\n\n\n<ul><li>First cycle=0.167\u00d71.0=0.167[pu]<\/li><\/ul>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\to \\frac{100}{0.5}\\times 0.167=33.4[pu]\\]<\/div>\n\n\n\n<ul><li>Interrupting cycle=0.167\u00d71.5=0.25[pu]<\/li><\/ul>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[\\to\\frac{100}{0.5}\\times 0.25=50[pu]\\]<\/div>\n\n\n\n<p>[\ud45c] IEEE\/ANSI Std.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"463\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c12.png\" alt=\"\" class=\"wp-image-15444\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c12.png 1024w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c12-300x136.png 300w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c12-768x347.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>* 1[HP] \u2252 0.75[kW]<\/p>\n\n\n\n<h4>\uace0\uc7a5\uc804\ub958 \uacc4\uc0b0<\/h4>\n\n\n\n<p>1) F1 \uc9c0\uc810<br>(\uace0\uc555\ucc28\ub2e8\uae30 \uc0b0\uc815\ud560 \uac83\uc774\ubbc0\ub85c \uc804\ub3d9\uae30 \uc784\ud53c\ub358\uc2a4\ub294 1.5xd&#8221;\uc801\uc6a9)<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c13.png\" alt=\"\" class=\"wp-image-15445\" width=\"248\" height=\"289\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c13.png 680w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c13-257x300.png 257w\" sizes=\"(max-width: 248px) 100vw, 248px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_s=\\frac{1}{\\%z[pu]}\\times I_b=\\frac{1}{0.607}\\times\\frac{100\\times10^3}{\\sqrt3\\times 6.6}\\]\\[=14,412[A]\\]<\/div>\n\n\n\n<p>2) F2 \uc9c0\uc810<br>(\uc800\uc555\ucc28\ub2e8\uae30 \uc0b0\uc815\ud560 \uac83\uc774\ubbc0\ub85c \uc804\ub3d9\uae30 \uc784\ud53c\ub358\uc2a4\ub294 1.0xd&#8221;\uc801\uc6a9)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"423\" src=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c14.png\" alt=\"\" class=\"wp-image-15446\" srcset=\"http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c14.png 1024w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c14-300x124.png 300w, http:\/\/ftz.myds.me\/wordpress\/wp-content\/uploads\/2022\/10\/3\uc0c1-\ub2e8\ub77d-\uc608\uc81c14-768x317.png 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[I_s=\\frac{1}{\\%z[pu]}\\times I_b=\\frac{1}{3.64}\\times \\frac{100\\times 10^3}{\\sqrt3\\times 0.38}\\]\\[=41,741[A]\\]<\/div>\n\n\n\n<h4>\ucc28\ub2e8\uae30 \uc815\uaca9\uc120\uc815<\/h4>\n\n\n\n<p>1) \uace0\uc555 \ucc28\ub2e8\uae30: VCB<\/p>\n\n\n\n<p>(1) \uc815\uaca9\uc804\uc555: 7.2kV<\/p>\n\n\n\n<p>(2) \uc815\uaca9\uc804\ub958: 1,250A (\uc804\ubd80\ud558\uc804\ub958 875A \uace0\ub824)<\/p>\n\n\n\n<p>(3) \uc815\uaca9\ucc28\ub2e8\uc804\ub958: 25kA (3\uc0c1\ub2e8\ub77d\uc804\ub958\uc5d0 1.5\ubc30 \uc774\uc0c1 \uc5ec\uc720\ub97c \uace0\ub824)<\/p>\n\n\n\n<p>(4) \uc815\uaca9\ucc28\ub2e8\uc6a9\ub7c9<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[ P_s=\\sqrt3\\times 7.2\\times 25\u2243312[MVA]\\]<\/div>\n\n\n\n<p>2) \uc800\uc555 \ucc28\ub2e8\uae30: ACB<\/p>\n\n\n\n<p>(1) \uc815\uaca9\uc804\uc555: 380V<\/p>\n\n\n\n<p>(2) \uc815\uaca9\uc804\ub958: 1,200A (\uc804\ubd80\ud558\uc804\ub958 1,519A \uace0\ub824)<\/p>\n\n\n\n<p>(3) \uc815\uaca9\ucc28\ub2e8\uc804\ub958: 65kA (3\uc0c1\ub2e8\ub77d\uc804\ub958\uc5d0 1.5\ubc30 \uc774\uc0c1 \uc5ec\uc720\ub97c \uace0\ub824)<\/p>\n\n\n\n<p>(4) \uc815\uaca9\ucc28\ub2e8\uc6a9\ub7c9<\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">\\[ P_s=\\sqrt3\\times 0.38\\times 65\u224343[MVA]\\]<\/div>\n\n\n\n<h6><strong><em>\u2605<a href=\"http:\/\/ftz.myds.me\/wordpress\/j-%ea%b3%a0%ec%9e%a5%ea%b3%84%ec%82%b0\/\">\uace0\uc7a5\uacc4\uc0b0<\/a> <br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ea%b3%84%ec%82%b0%ec%9d%98-%ea%b8%b0%ec%b4%88\/\">\uace0\uc7a5 \uacc4\uc0b0\uc758 \uae30\ucd08\u2055<br><\/a>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ed%8d%bc%ec%84%bc%ed%8a%b8-%ec%9e%84%ed%94%bc%eb%8d%98%ec%8a%a4\/\">\ud37c\uc13c\ud2b8 \uc784\ud53c\ub358\uc2a4<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ec%8b%9c%ea%b0%84%ec%97%90-%eb%94%b0%eb%a5%b8-%eb%b6%84%eb%a5%98\/\">\uace0\uc7a5 \uc2dc\uac04\uc5d0 \ub530\ub978 \ubd84\ub958<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ea%b3%a0%ec%9e%a5-%ec%9e%84%ed%94%bc%eb%8d%98%ec%8a%a4\/\">\uace0\uc7a5 \uc784\ud53c\ub358\uc2a4<\/a>\u2055<br>&#8211;<a href=\"http:\/\/ftz.myds.me\/wordpress\/%ec%a0%84%eb%a0%a5%ea%b3%84%ed%86%b5-%eb%8b%a8%eb%9d%bd%ec%82%ac%ea%b3%a0%ec%97%90-%eb%8c%80%ed%95%9c-%ea%b3%bc%eb%8f%84-%ed%95%b4%ec%84%9d\/\">\uc804\ub825\uacc4\ud1b5 \ub2e8\ub77d\uc0ac\uace0\uc5d0 \ub300\ud55c \uacfc\ub3c4 \ud574\uc11d<\/a>\u2055<\/em><\/strong><br><strong><em><br><a href=\"http:\/\/ftz.myds.me\/wordpress\/%eb%b3%80%ed%99%98%ec%9d%98-%ea%b8%b0%ec%b4%88\/\">\ubcc0\ud658\uc758 \uae30\ucd08<\/a><\/em><\/strong>\u2055<\/h6>\n\n\n\n<p>I&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EA%B8%B0%EB%B3%B8%EC%9D%B4%EB%A1%A0\/\">\ub2e8\ub77d\uc804\ub958(\uae30\ubcf8\uc774\ub860)<\/a><br>\u2192A&nbsp;<a href=\"https:\/\/cq4l.com\/%ea%b8%b0%ec%97%ac%ec%a0%84%eb%a5%98\/\">\uae30\uc5ec\uc804\ub958<\/a><br>\u2192Z&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EC%A2%85%EB%A5%98\/\">\ub2e8\ub77d\uc804\ub958(\uc885\ub958)<\/a><br>C&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8B%A8%EB%9D%BD%EC%A0%84%EB%A5%98-%EA%B3%84%EC%82%B0%EB%B2%95-%EC%A2%85%EB%A5%98\/\">\ub2e8\ub77d\uc804\ub958(\uacc4\uc0b0\ubc95 \uc885\ub958)<\/a><br>\u2192Y&nbsp;<a href=\"https:\/\/cq4l.com\/%EB%8C%80%EC%B9%AD%EC%A2%8C%ED%91%9C%EB%B2%95\/\">\ub300\uce6d\uc88c\ud45c\ubc95<\/a><br>P&nbsp;<a 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