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¿µ¹®Ç¥Áظí The Common Level Approach on a Countermeasure against Electromagnetic Interference by a Power Line with Broadcasting and Communications Services
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À¯µµ Àü¾Ð Á¾·ùº°·Î À¯µµ Àü¾ÐÀ» °è»êÇϴµ¥ ÇÊ¿äÇÑ °øÅë ±â¼ú ±Ô°ÝÀ¸·Î¼­ À¯µµ Àü¾Ð °è»êÀÇ ±âº» ½Ä, Åë½Å¼±°ú Àü·Â¼±ÀÇ º´Çà °Å¸® ÀýºÐ ±¸°£µé¿¡ ´ëÇÑ À¯µµ Àü¾Ð ÇÕ¼º ¹æ¹ý, À¯µµ¸¦ ÀÏÀ¸Å°´Â Àü·Â¼±°ú À¯µµ¸¦ ¹Þ´Â Åë½Å¼± °£ÀÇ ÀüÀÚ°è ±âº» Ä¿ÇøµÀ» °è»êÇÏ´Â »óÈ£ ÀδöÅϽº, Åë½Å¼±°ú Àü·Â¼± ÁÖº¯¿¡ À§Ä¡ÇÏ¿© ÀüÀÚÀ¯µµ Àü¾Ð¿¡ °¨¼è ¿µÇâÀ» ¹ÌÄ¥ ¼ö ÀÖ´Â µµÃ¼µé¿¡ ´ëÇÑ Â÷Æó °è¼ö¸¦ °è»êÇÏ´Â ÀÏ¹Ý ½ÄÀ» Á¦°øÇÑ´Ù.
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¿µ¹®³»¿ë¿ä¾à Basic technical principle is explained to help understand a general phenomenon of electromagnetic induction and the occuring mechanism of electromagnetic induction by a power line is also described.
The sort of induction voltages and their limited voltages which is made of legal protection are presented. They are needed to practise a protection measure against power induction problem.
The basic formula for induction voltage calculation, the composition method of induced voltages corresponding to divided length terms of telecommunication line parallelized with a power line, mutual inductance to calculate effective electromagnetic coupling quantity between telecommunication line and power line, a general formula to calculate a shielding coefficient of conductive line length material which can have a reduction effect to induction are presented. All of these are common-level technical elements for induction voltage calculation by the types of voltages.
Finally, the framework of making countermeasures against induction problem is described.
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