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Á¦¸ñ ´©¼³Àü·ù(Leakage Current)¶õ ¹«¾ùÀΰ¡?
ºÐ·ù Àü±âÀüÀÚÁ¦¾î > Àü±â/ÀüÀÚ ÀÛ¼ºÀÏ 2006.10.27
ÆòÁ¡/Ãßõ 0 / 0 ¸í ´Ù¿î/Á¶È¸ 0 / 2145
ÀÛ¼ºÀÚ admin ´Ù¿î·Îµå
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´©¼³Àü·ù(Leakage Current)¶õ ¹«¾ùÀΰ¡?

- ´©¼³Àü·ù (Leakage current)¶õ ¿ë¾î´Â 1945³â ULÀÇ Karl GeigesÀÇ ³í¹® ¡° Measurement of Electric Harzard in Radio Equipement ¿¡¼­ ÃÖÃÊ·Î °Å·Ð µÇ¾úÀ¸¸ç. ÇöÀç »ç¿ëµÇ°í ÀÖ´Â Leakage currentÀÇ ÃøÁ¤ ¹æ¹ýµµ ±×°¡ °³¹ßÇÏ¿© Ç¥ÁØÈ­ ÇÑ °Í ÀÔ´Ï´Ù.

´©¼³Àü·ù´Â ´Ü¼øÈ÷ Á¦Ç°¿¡¼­ ´ëÁö·Î ´©¼³µÇ¾î È帣´Â Àü·ù°ª¸¸À» Ç¥½ÃÇÏ´Â °ÍÀÌ ¾Æ´Ï¶ó ÀÎü¸¦ ÅëÇØ ´ëÁö·Î È带 ¼ö ÀÖ´Â Àü·ù¸¦ ÃøÁ¤ÇÏ´Â °ÍÀÔ´Ï´Ù.

±×ÀÇ ÃøÁ¤ ¿¬±¸´Â Current meterÀÇ ImpedanceÀÇ Ç¥ÁØÈ­ÀÌ¿´À¸¸ç ´Ù¾çÇÑ ÀÎüÀúÇ×°ú ÃøÁ¤±â¿¡ ´ëÇÑ ºÐ¼®À» ÅëÇØ Leakage current meterÀÇ ÀÎüÀúÇ×À» ¼±Á¤ÇÑ °ÍÀÌ ÇöÀç Àû¿ëµÇ°í ÀÖ´Â ´©¼³Àü·ù ÃøÁ¤ ¹æ¹ýÀÔ´Ï´Ù.

´©¼³Àü·ù(Leakage Current)ÀÇ Àý°¨¹ý

´©¼³Àü·ùÀÇ Àý°¨¹ý

´©¼³Àü·ùÀÇ Àý°¨¹ýÀº ÁÖ¿ä¿øÀÎÀ» ã¾Æ³» Á¦°Å¸¸ ÇØÁÖ¸é µË´Ï´Ù.


Leakage currentÀÇ ÁÖ¿ä¿äÀÎ

1.Insulation resistance

-. Insulation resistance´Â Åë»ó Capacitanceº¸´Ù ³ô±â ¶§¹®¿¡ ¹«½ÃÇÒ ¼ö ÀÖÀ½.

2.Real capacitance of EMC filter

-. EMC Filter´Â Á¦Ç°ÀÇ Input¿¡ µû¶ó º¯µ¿µÇÁö ¾ÊÀ½.

-. EMC FilterÀÇ Leakage current ´Â ÀÏÁ¤ ÇÔÀ¸·Î Input current¿¡ µû¶ó º¯ÇÏÁö ¾ÊÀ½

3.Stray capacitance of Main circuit

-. Stray input capacitance ´Â Input current¿¡ µû¶ó ´Ù¸£´Ù. ÀϹÝÀûÀ¸·Î Input current°¡ ³ôÀ»¼ö·Ï ,conductor°¡ Ä¿Áú¼ö·Ï,Å« ¿ë·®ÀÇ Tras.¸¦ »ç¿ëÇÒ ¼ö·Ï Stray°¡ Ä¿Áø´Ù.
(Capacitance´Â ConductorÀÇ Area¿¡ µû¶ó Á÷Á¢ÀûÀ¸·Î ÀÛ¿ëÇÔ)

Leakage CurrentÀÇ Àý°¨¹ý

1. Reduce the capacitance

2. Install a 1:1 isolating transformer between the main and the load

-. Transformer°¡ ³»ÀåÇüÀÎ °æ¿ì Leakage current´Â Isolating Trans. ÀÇ 1Â÷´ÜÀÇ ´©¼³Àü·ù·Î º¯È¯µÈ´Ù.

(ÀÌ TechniqueÀº High leakage current¸¦ °®´Â Medical Á¦Ç°¿¡¼­ º¸ÆíÀûÀ¸·Î »ç¿ëÇÏ´Â ¹æ¹ýÀÌ´Ù)

-. Tans.°¡ ¿ÜÀåÀΰæ¿ì Trans.ÀÇ 2Â÷´ÜÀ» Floating ½ÃŲ´Ù

3. Low-voltage¸¦ Æ÷ÇÔÇÑ Accessible conductive part°¡ ¾øµµ·Ï Construction À» Á¶Á¤ÇÑ´Ù.

(À̹æ¹ýÀº Á¢Áö·ÎÈ帣´Â Leakage current¸¦ ¹Ù²Ü¼ø ¾øÁö¸¸, leakage current·ÎºÎÅÍ ÀÎü¸¦ º¸È£ ÇÒ ¼ö ÀÖ´Ù.)

4. Permanently connectionÀ¸·Î ÀüȯÇÑ´Ù.



Leakage current ÀÇ ÁÖ¿ä ¿äÀÎÀº ´ÜÀÚ°£/ºÎÇ°°£¿¡ È带 ¼ö ÀÖ´Â Stray Voltage¿¡ µû¶ó Á¿ìµÇ¸ç È¿°úÀûÀ¸·Î À̸¦ Á¦°ÅÇÏ´Â ¹æ¹ý¸¸ÀÌ Leakage current¸¦ ÁÙÀÏ ¼ö ÀÖ½À´Ï´Ù.


´©¼³Àü·ùÀÇ ±Ô°Ý ±ÔÁ¦

´©¼³Àü·ù¿¡ ´ëÇÑ ±Ô°Ý»óÀÇ ±ÔÁ¦´Â Á¦Ç°±º¿¡ µû¶ó ´Ù¸¨´Ï´Ù.

ÀϹÝÀûÀÎ °¡ÀüÁ¦Ç°ÀÇ °æ¿ì, ¾Õ¿¡¼­ ¾ð±ÞµÈ 5%Àοø¸¸ÀÌ ´À³¥ ¼ö ÀÖ´ÂÀü·ùÀÎ 0.5mA·Î ±ÔÁ¦µÇ°í ÀÖÀ¸¸ç ÀÇ·á±â±â´Â 0.1mA, ȯÀÚ¿Í Á÷Á¢ Á¢ÃËÇÏ´Â ÀåºñÀÇ °æ¿ì 0.01mA·Î ±ÔÁ¦ÇÏ´Â Á¤µµ°¡ ´Ù¸¨´Ï´Ù.

¾Æ¸¶µµ ÀÎü³»ºÎ¸¦ µå·Á´Ùº¸°í Á¢ÃËÇÏ´Â ÀåºñÀÇ °æ¿ì ´©¼³µÇ´Â Àü·ù´Â ÇǺÎÀúÇ×ÀÌ ¾ø´Â »óÅ¿¡¼­ Á»´õ ¹Î°¨ÇØÁö°í ¿µÇâÀÌÄ¿Áö°ÚÁÒ.

0.5 mA : Electrical appliance

0.1 mA : Medical device

0.01 mA : Patient connected medical device

±×·±µ¥ ÀϹÝÀûÀÎ °¡ÀüÁ¦Ç° ³»¿¡¼­µµ ´©¼³Àü·ùÀÇ ±ÔÁ¦´Â ¶Ç ´Ù¸¨´Ï´Ù.
Á¤È®ÇÑ ÀÌÀ¯´Â ¾Æ´ÏÁö¸¸ Á¦Ç°º° ±ÔÁ¦°¡ ´Ù¸¥ ÀÌÀ¯´Â,

1. Additional protectionÀ¸·Î »ç¿ëµÈ RCD(Residual current Distributor)ÀÇ Áõ°¡

2. Electric FilterÀÇ »ç¿ëÁõ°¡

3. SMPS »ç¿ëÁõ°¡

4. Plug-connected ±â±â¿¡ »ç¿ëµÈ Protective earth breakerÀÇ ³»Æ÷µÈ À§Ç輺 µîÀ¸·Î ÀÎÇØ ´©¼³Àü·ù¸¦ Á¦¾îÇϱâ Èûµé±â ¶§¹®À̶ó°í ÇÕ´Ï´Ù.

Ãâó:°æÀÎÃøÁ¤±â
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°³ÀÎÁ¤º¸º¸È£Ã¥ÀÓÀÚ : ±èÇöÁÖ»ç¾÷Àå¼ÒÀçÁö : [03134] ¼­¿ïƯº°½Ã Á¾·Î±¸ µ·È­¹®·Î 88-1, 3Ãþ
´ëÇ¥ÀüÈ­: 1544-1605¸¶ÄÉÆÃ: 02-861-9044±â¼ú±³À°Áö¿ø: 02-861-9044Æѽº: 02-6008-9111E-mail : mechapia@mechapia.com
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