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[µ¶ÀÚÅõ°í] NEC ±ÔÁ¤Á¢Áö ¹× º»µùBonding ±âº»¿øÄ¢
2011³â 6¿ù 23ÀÏ (¸ñ) 18:00:02 |   Áö¸é ¹ßÇà ( 2011³â 5¿ùÈ£ - Àüü º¸±â )



Àü±â Á¢Áö´Â Àü±â ¾ÈÀü°ú °ü·ÃÀÌ ±íÀ¸¸ç ¸ðµÎ ±× Á߿伺À» ÀÎÁ¤ÇÑ´Ù. ¿ì¸®³ª¶ó´Â ÇöÀç IEC ±Ô°ÝÀ» äÅÃÇØ ¿î¿µÇϱ⿡ Àü±âÇÐÀڵ鵵 IEC ±Ô°Ý¿¡ ÀÇÇÑ Á¢Áö °ü·Ã ³í¹®À» ¸¹ÀÌ ¹ßÇ¥ÇÑ´Ù. ±×·¯³ª IEC ±Ô°ÝÀº Á¢Áö Á¾·ù¸¦ ¹éÈ­Á¡½ÄÀ¸·Î ³ª¿­ÇØ Æ¯Á¤ Á¢Áö ¹æ½ÄÀÇ Á߿伺À» ºÎ°¢ÇÏÁö ¸øÇß´Ù. ÀÌ ÀÚ·á´Â NFPA 70 / NEC(2011) Article 250 ±ÔÁ¤ Áß Àü±â Á¢Áö ¹× º»µùBonding¿¡ ´ëÇÑ ±âº» ¿ä±¸Á¶°ÇÀ» ±ÔÁ¤ÇÑ Section 250.4¸¦ ¹ø¿ª Çؼ³ÇÑ °ÍÀÌ´Ù. Article250 Àüü¿¡¼­ ±ÔÁ¤ÇÑ ±¸Ã¼ÀûÀÎ Á¢Áö ¹× º»µù ¹æ¹ý Á¦½Ã¿¡ ¾Õ¼­, Àüü¿¡ °øÅëÀ¸·Î Àû¿ëÇÏ´Â Á¢Áö ¹× º»µùÀ» ÇÏ´Â ±Ùº» ¸ñÀû°ú ½ÇÇà ¹æ¹ý¿¡ ´ëÇÑ ±âº» ¿øÄ¢À» ¾ð±ÞÇÑ °ÍÀÌ´Ù. ¾÷¹«»ó ÇÊ¿äÇØ ¹ø¿ªÇÑ ÀڷḦ »ê¾÷ ÇöÀåÀÇ Àü±â ¿£Áö´Ï¾î¿Í °øÀ¯ÇÏ°íÀÚ ÇÑ´Ù.
¡Ø NFPA : National Fire Protection Association.
NEC : National Electrical Code.
IEEE : Institute of Electrical and Electronics Engineers.
IEC : International Electrotechnical Commission.

±èÈ«°ü Profile
¡¤ ¿µ³²´ëÇб³ Àü±â°øÇаú Á¹¾÷(°øÇлç) ¡¤ ¹Ì±¹ Westinghouse¿¡¼­ Electrical Engineering Services ±â¼ú¿¬¼ö ¡¤ ´ëÁ¤ºÎ Á¦¾ÈÀ» ÅëÇØ Àü±â ¼³ºñ ±â¼ú ±âÁØÀÇ ÆÇ´Ü ±âÁØ¿¡ °íÀúÇ× Á¢Áö(HRG) Á¶Ç× ½Å¼³ ¡¤ Çöúޱ׶óÅØÄÜÆ®·Ñ½º ´ëÇ¥.
02-3402-3114, inno@hrg.kr

National Electrical CodeⓇ250.4(2011)
NEC 250.4 General Requirements for Groundingand Bonding. Á¢Áö ¹× º»µùÀÇ ±âº» ¿ä±¸ Á¶°Ç
The following general requirements identify what grounding and bonding of electrical systems are required to accomplish. The prescriptive methods contained in Article 250 shall be followed to comply with the performance requirements of this section.
¾Æ·¡ ±âº» ¿ä±¸ Á¶°ÇµéÀº ÁؼöÇØ¾ß ÇÏ´Â Àü·Â °èÅëÀÇ Á¢Áö ¹× º»µù¿¡ °üÇÑ °ÍÀÌ´Ù. NEC Á¶Ç× 250¿¡ ¸í½ÃµÈ ±ÔÁ¤µéÀº ÀÌ Á¶Ç׿¡ ÀÖ´Â ±âº» ½ÇÇà Á¶°ÇÀ» µû¶ó¾ß ÇÑ´Ù.

Grounded Systems. Á¢Áö °èÅë
Electrical System Grounding. Àü±â °èÅë Á¢Áö£üElectrical systems that are grounded shall be connected to earth in a manner that will limit the voltage imposed by lightning, line surges or unintentional contact with higher-voltage lines and that will stabilize the voltage to earth during normal operation.
Á¢ÁöÇØ¾ß ÇÏ´Â Àü±â °èÅë(*¿¹ transformer/generator)Àº ³«·Ú, ¶óÀÎ ¼­Áö ȤÀº ´õ ³ôÀº Àü¾Ð Àü·Î¿Í »ç°í Á¢ÃËÀ¸·Î °¡ÇØÁö´Â ÀÌ»ó Àü¾ÐÀÌ Á¦Çѵǰí, ¶ÇÇÑ Á¤»ó ¿îÀü ½Ã ´ëÁö Àü¾ÐÀÌ ¾ÈÁ¤µÇµµ·Ï ´ëÁö¿¡ ¿¬°á(*°èÅëÁ¢Áö System Grounding)ÇØ¾ß ÇÑ´Ù.

Grounding of Electrical Equipment. Àü±â±â±âÀÇ Á¢Áö£üNormally non-current-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected to earth so as to limit the voltage to ground on these materials.

Informational Note : An important consideration for limiting the imposed voltage is the routing of bonding and grounding lectrode conductors so that they are not any longer than necessary to complete the connection without disturbing the permanent parts of the installation and so that unnecessary bends and loops are avoided.
Á¤º¸ ³ëÆ® : »ç°í·Î ¸»¹Ì¾ÏÀº ÀÌ»ó Àü¾ÐÀ» ¾ïÁ¦ÇÒ ¶§ °í·ÁÇÒ Áß¿äÇÑ »çÇ× Áß Çϳª·Î, º»µùÀ» Çϰųª Á¢Áö ±Ø¼± Á¢Áö ½Ã µµ¼± Æ÷¼³ ¹æ¹ý¿¡¼­, ÀÌµé µµ¼±À» Á÷¼±À¸·Î ¼³Ä¡Çϱâ À§ÇØ º® µî¿¡ ÀϺη¯ ±¸¸ÛÀ» ¶ÕÀ» Çʿ伺Àº ¾øÀ¸³ª, µµ¼±Àº °¡´ÉÇÑ ÇÑ Âª°Ô ÇÏ°í, ±¸ºÎ¸®°Å³ª ȯ»óÀ¸·Î µÇ´Â °ÍÀº ÇÇÇØ¾ß ÇÑ´Ù.
* Á¢Áö ±Ø¼± ¹× º»µù µµ¼±Àº °¡´ÉÇϸé ÀÓÇÇ´ø½º (Impedance ; ±³·ù ȸ·Î¿¡¼­ÀÇ Àü¾Ð°ú Àü·ùÀÇ ºñÝï)°¡ Àû°Ô ³ª¿Àµµ·Ï ª°Ô Á÷¼±À¸·Î ¼³Ä¡Çϸç, ÀÓÇÇ´ø½º°¡ Ä¿Áö¸é ÀÌ»ó Àü¾Ð Á¦ÇÑ È¿°ú°¡ ¶³¾îÁ®, ÀüÀÚ±â±â¿Í Åë½Å±â±â µî¿¡ ÇÇÇظ¦ ÁØ´Ù. ÀÌ µµ¼±µéÀÇ °íÁÖÆÄ ¸®¾×ÅϽº´Â ÀúÁÖÆÄÀÎ 60§Ô¿¡¼­ ¹®Á¦°¡ ¾È µÇÁö¸¸, ÁÖÆļö°¡ Å« Ư¼ºÀ» °¡Áø ³«·Ú´Â µµ¼± ½Ã°ø ¹æ¹ý¿¡ µû¶ó ÀÓÇÇ´ø½º°¡ ¸Å¿ì Ä¿Áú ¼ö ÀÖÀ¸¹Ç·Î Æ÷¼³ ½Ã À¯ÀÇÇØ¾ß ÇÑ´Ù.

Àü¼±À̳ª Àü±â±â±â¸¦ ¼ö¿ëÇϰųª, ȤÀº ±× Àü±â±â±â ¿ªÇÒÀ» ÀϺκÐÀÌ¶óµµ ¼ö¿ëÇÒ °æ¿ì Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ÀÌ ³ëÃâ µµÀüü(¿¹ : (ÅëĪ)Àü±â±â±â ¿ÜÇÔ)µéÀº »ç°í ½Ã ÀÌ ³ëÃâ µµÀüü¿¡ ´ëÇÑ ´ëÁö Àü¾ÐÀÌ Á¦Çѵǵµ·Ï ´ëÁö¿¡ ¿¬°á(* ±â±âÁ¢Áö(Equipment Grounding))ÇØ¾ß ÇÑ´Ù.

Bonding of Electrical Equipment. Àü±â±â±âÀÇ º»µù£üNormally non-current-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the electrical supply source in a manner that establishes an effective ground-fault current path.
Àü¼±À̳ª Àü±â±â±â¸¦ ¼ö¿ëÇϰųª, ȤÀº ±× Àü±â±â±â ¿ªÇÒÀ» ÀϺκÐÀÌ¶óµµ ¼ö¿ëÇÏ´Â °æ¿ì Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ÀÌ ³ëÃâ µµÀüüµéÀ» ¼­·Î ¿¬°áÇÏ°í, ¶Ç Àü¿ø(¿¹:Áß¼ºÁ¡)¿¡ º»µùÇØ À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î°¡ ±¸¼ºµÇµµ·Ï ÇØ¾ß ÇÑ´Ù.

Bonding of Electrically Conductive Materials and Other Equipment. (°èÅë ¿Ü)µµÀüü¿Í ¿©Å¸ ±â±âÀÇ º»µù£üNormally non-current-carrying electrically Conductive Materials that are likely to become energized shall be connected together and to the electrical supply source in a manner that establishes an effective ground-fault current path.
Æò¼Ò¿¡´Â Àü·ù°¡ È帣Áö ¾ÊÀ¸³ª, »ç°í·Î Àü·ù°¡ È带 ¼ö ÀÖ´Â (*°èÅë ¿Ü)µµÀüüµéÀº ¼­·Î ¿¬°áÇÏ°í, ¶Ç Àü¿ø(*¿¹ : Áß¼ºÁ¡)¿¡ º»µù(*Bonding)ÇØ, À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î°¡ ±¸¼ºµÇµµ·Ï ÇØ¾ß ÇÑ´Ù.

Effective Ground-fault Current Path. À¯È¿ Áö¶ô »ç°í
Àü·ù °æ·Î£üElectrical equipment and wiring and other electrically conductive material likely to become energized shall be installed in a manner that creates a low-impedance circuit facilitating the operation of the overcurrent device or ground detector for highimpedance grounded systems. It shall be capable of safely carrying the maximum ground-fault current likely to be imposed on it from any point on the wiring system where a ground fault may occur to the electrical supply source. The earth shall not be considered as an effective ground-fault current path.
Àü±â±â±â, Àü¼±·Î ¹× »ç°í ½Ã Àü·ù°¡ È带 ¼ö ÀÖ´Â °èÅë ¿Ü µµÀüü´Â °úÀü·ù º¸È£ ÀåÄ¡³ª °í ÀÓÇÇ´ø½º Á¢Áö°èÅë(°íÀúÇ× Á¢Áö °èÅë)ÀÇ Áö¶ô °¨Áö±â µ¿ÀÛÀÌ Àß µÇµµ·Ï, Àú ÀÓÇÇ´ø½º ȸ·Î(À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î)°¡ ±¸¼ºµÇµµ·Ï ¼³Ä¡ÇØ¾ß ÇÑ´Ù. Áö¶ô »ç°í°¡ ±× ¼±·ÎÀÇ ¾î´À °÷¿¡¼­ ¹ß»ýÇصµ, ±× ÁöÁ¡¿¡¼­ ÃÖ´ë Áö¶ô »ç°í Àü·ù°¡ ¾ÈÀüÇÏ°Ô Àü¿ø(¿¹ : Áß¼ºÁ¡)À¸·Î È带 ¼ö ÀÖ¾î¾ß ÇÑ´Ù. ´ëÁö¸¦ ÅëÇÑ °æ·Î(¿¹ : Çѱ¹ÀÇ Á¦2Á¾ Á¢Áö)´Â À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î·Î °£ÁÖµÉ ¼ö ¾ø´Ù.

Ungrounded Systems. ºñÁ¢Áö °èÅë
Grounding Electrical Equipment. Àü±â±â±âÀÇ Á¢Áö£üNon-current-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected to earth in a manner that will limit the voltage imposed by lightning or unintentional contact with higher-voltage lines and limit the voltage to ground on these materials.
Àü¼±À̳ª Àü±â±â±â¸¦ ¼ö¿ëÇϰųª, ȤÀº ±× Àü±â±â±â ¿ªÇÒÀ» ÀϺκÐÀÌ¶óµµ ¼ö¿ëÇÏ´Â °æ¿ì Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ÀÌ ³ëÃâ µµÀüüµéÀº ³«·Ú³ª ´õ ³ôÀº Àü¾Ð Àü·Î¿ÍÀÇ »ç°í Á¢ÃËÀ¸·Î °¡ÇØÁö´Â ÀÌ»ó Àü¾ÐÀÌ Á¦Çѵǰí, ¶Ç ÀÌµé µµÀüü¿¡ ´ëÇÑ ´ëÁö Àü¾ÐÀÌ Á¦Çѵǵµ·Ï ´ëÁö¿¡ ¿¬°á(±â±âÁ¢Áö(Equipment Grounding))ÇØ¾ß ÇÑ´Ù.

Bonding of Electrical Equipment. Àü±â±â±âÀÇ º»µù£üNon-current-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the supply system grounded equipment in a manner that creates a low-impedance path for ground-fault current that is capable of carrying the maximum fault current likely to be imposed on it.
Àü¼±À̳ª Àü±â±â±â¸¦ ¼ö¿ëÇϰųª, ȤÀº ±× Àü±â±â±â ¿ªÇÒÀ» ÀϺκÐÀÌ¶óµµ ¼ö¿ëÇÏ´Â °æ¿ì Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ÀÌ ³ëÃâ µµÀüüµéÀº ¼­·Î ¿¬°áÇÏ°í, ¶ÇÇÑ Àü¿øÀÇ °èÅë Á¢ÁöµÈ ±â±â¿¡ º»µùÀ» ÇÏ¿© »ç°í ½Ã ±× ³ëÃâ µµÀüü¿¡ ÃÖ´ë Áö¶ô »ç°í Àü·ù°¡ È帣µµ·Ï Àú ÀÓÇÇ´ø½º Áö¶ô »ç°í Àü·ù °æ·Î¸¦ ±¸¼ºÇØ¾ß ÇÑ´Ù.

Bonding of Electrically Conductive Materials and Other Equipment. (°èÅë ¿Ü)µµÀüü¿Í ¿©Å¸ ±â±âÀÇ º»µù£üElectrically Conductive Materials that are likely to become energized shall be connected together and to the supply system grounded equipment in a manner that creates a low-impedance path for ground- fault current that is capable of carrying the maximum fault current likely to be imposed on it.
»ç°í ½Ã Àü·ù°¡ È带 ¼ö ÀÖ´Â (°èÅë ¿Ü)µµÀüü¸¦ ¼­·Î ¿¬°áÇÏ°í, ¶ÇÇÑ Àü¿øÀÇ °èÅë Á¢ÁöµÈ ±â±â¿¡ º»µùÇØ »ç°í ½Ã ±× (°èÅë ¿Ü)µµÀüü¿¡ ÃÖ´ë Áö¶ô »ç°í Àü·ù°¡ È帣µµ·Ï, Àú ÀÓÇÇ´ø½º Áö¶ô »ç°í Àü·ù °æ·Î¸¦ ±¸¼ºÇØ¾ß ÇÑ´Ù.

Path for Fault Current. Áö¶ô »ç°í Àü·ù °æ·Î£üElectrical equipment, wiring and other electrically conductive material likely to become energized shall be installed in a manner that creates a low-impedance circuit from any point on the wiring system to the electrical supply source to facilitate the operation of overcurrent devices should a second ground fault from a different phase occur on the wiring system. The earth shall not be considered as an effective fault-current path.
»ç°í ½Ã ÅëÀüÀÌ µÇ´Â Àü±â±â±â, Àü¼± ¹× (°èÅë ¿Ü)µµÀüüµéÀº, ±× ¼±·Î ¾îµð¼­µç Áö¶ô »ç°í°¡ ³ª¼­ Àü¿øÀ¸·Î »ç°í Àü·ù°¡ È带 ¶§ °úÀü·ù º¸È£ ÀåÄ¡ ¹× (°í ÀÓÇÇ´ø½º Á¢Áö °èÅë¿¡¼­)´Ù¸¥ »ó¿¡¼­ ¹ß»ýÇÏ´Â 2Â÷ Áö¶ô »ç°í ½Ã¿¡µµ ´ç¿¬È÷ Àß µ¿À۵ǵµ·Ï Àú ÀÓÇÇ´ø½º ȸ·Î(À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î)¸¦ ±¸¼ºÇØ¾ß ÇÑ´Ù. ´ëÁö¸¦ ÅëÇÑ °æ·Î´Â À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î·Î °£ÁÖµÉ ¼ö ¾ø´Ù.

IEEE¿¡ ÀÇÇϸé Àü·Â °èÅëÀÇ Á¢Áö Á¾·ù¸¦ Å©°Ô °èÅë Á¢Áö(System Grounding)¿Í ±â±â Á¢Áö(Equipment Grounding) 2°¡Áö·Î ³ª´«´Ù. °èÅë Á¢Áö¿¡´Â ¨ç Á÷Á¢ Á¢Áö(Solid Grounding) ¨è ÀúÀúÇ× Á¢Áö(Low Resistance Grounding) ¨é °íÀúÇ× Á¢Áö(High Resistance Grounding) ¨ê ºñ Á¢Áö(Ungrounded System)°¡ ÀÖ´Ù.
Á¢Áö¶õ ´ëÁö³ª ´ëÁö ¿ªÇÒÀ» ÇÏ´Â ´ë»ó¿¡ µµ¼±À» ÀǵµÀûÀ¸·Î ¿¬°áÇÏ´Â °ÍÀ» ¸»ÇÑ´Ù. Àü·ÂÀ» ¼öÀüÇÏ´Â ±¸³» ¸ÞÀÎ ¼öÀü¹Ý(ù ¼öÀü¹Ý)¿¡ ÇÑ ¹ø Á¢ÁöÇÏ°í, ¼öÀü º¯¾Ð±â¸¦ ¿Á¿Ü¿¡ ¼³Ä¡ÇßÀ¸¸é Ãß°¡·Î ¿Á¿Ü¿¡µµ Á¢ÁöÇÑ´Ù.
Àü¿ø ÂÊ¿¡¸¸ Á¢ÁöÇÏ°í Àü·ÂÀ» »ç¿ëÇÏ´Â ºÎÇÏ ÂÊ¿¡´Â Á¢ÁöÇÏÁö ¾ÊÀ¸¸ç, ÇÏÀ§ °èÅë º¯¾Ð±â 2Â÷ Ãø¿¡µµ °°Àº ¿øÄ¢À¸·Î Á¢ÁöÇØ¾ß ÇÑ´Ù.

Á¢ÁöÇÏ´Â 2°¡Áö ±âº» ÀÌÀ¯ : two basic reasons for grounding
1. ³«·Ú ȤÀº Àü¿ø °ø±Þ¼±¿¡ ´õ °í¾ÐÀÎ ¼±·Î¿Í »ç°í Á¢ÃËÀ¸·Î ¸»¹Ì¾ÏÀº Àü¿ø¼±ÀÇ ÀüÀ§ »ó½ÂÀ» Á¦ÇÑÇÏ°íÀÚ.
To limit the voltages caused by lightning or by accidental contact of the supply conductors with conductors of higher voltage
2. Á¤»ó ¿îÀü ½Ã Àü¾ÐÀÇ ¾ÈÁ¤È­¸¦ À§ÇØ(´ëÁö Àü¾ÐÀ» ÀÏÁ¤ ¼öÁØÀ¸·Î À¯ÁöÇϱ⿡ °èÅë¿¡ ¿¬°áµÈ ¾î¶² ºÎÇÏ ±â±â¶óµµ ±× Àü¾Ð¸¸ °¡ÇØÁø´Ù).
To stabilize the voltage under normal operating conditions (which maintains the voltage at one level relative to ground, so that any equipment connected to the system will be subject only to that potential difference)

[±×¸² 250.1]Àº ÀüÇüÀûÀÎ Àü·Â¿ë º¯¾Ð±â ´Ü»ó 3¼±½Ä Á¢Áö°èÅëÀ» º¸¿©ÁØ´Ù. Àü·Â ¼öÀü¹Ý ³» °èÅë Á¢Áö¼±Àº ÀǵµÀûÀ¸·Î Á¢Áö ±Ø¼±(GEC, Grounding Electrode Conductor)À» ÅëÇØ Á¢Áö±Ø¿¡ ¿¬°áÇÑ´Ù.
¼öÀü¹Ý ³» ÁÖ º»µù Á¡ÆÛ¸¦ ÀÌ¿ëÇØ ±â±â Á¢Áö ¸ð¼±°ú Áß¼ºÁ¡ ¸ð¼±À» º»µùÇÑ´Ù´Â °ÍÀº, Àü·Â °èÅë¿¡¼­ Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ³ëÃâ µµÀüü¿¡ ´ëÇÑ Á¢Áö ±âÁØ(ground reference)À» ¸¸µé°í, °èÅë Á¢Áö¼±À» ÅëÇØ Àü·Â¿ë º¯¾Ð±â(°ø±Þ Àü¿ø)·Î ÅëÇÏ´Â Áö¶ô »ç°í Àü·ù Åë·Î¸¦ Á¦°øÇÑ´Ù´Â °ÍÀ» ¶æÇÑ´Ù.
¼öÀü º¯¾Ð±â¸¦ ¿Á¿Ü¿¡ ¼³Ä¡ÇÑ °æ¿ì, 1°³ ÀÌ»óÀÇ Á¢Áö¸¦ ¿Á¿Ü¿¡ Ãß°¡·Î ¼³Ä¡ÇØ¾ß ÇÑ´Ù. ´Ü, °í ÀÓÇÇ´ø½º Á¢Áö °èÅë(°íÀúÇ× Á¢Áö °èÅë)¿¡´Â Ãß°¡·Î Á¢ÁöÇÏÁö ¾Ê´Â´Ù(NEC 250.24(A)(2).
±â±â Á¢Áö ¸ð¼±(equipment grounding bus)À» ´ëÁö¿¡ ¿¬°áÇÏÁö ¾Ê°í, Áß¼ºÁ¡ ¸ð¼±(grounded or neutral bus)¿¡ ¿¬°áÇØ Áö¶ô »ç°í ½Ã °úÀü·ù º¸È£ ÀåÄ¡³ª º¸È£ °èÀü±â°¡ Àß µ¿À۵ǵµ·Ï ÇÏ´Â °ÍÀÌ º»µùÀÌ´Ù.

Áß¿äÇÑ »çÇ× Áß ÇϳªÁö¸¸ ÀÌÇØ°¡ ºÎÁ·ÇÏ°í, Àü·Â °èÅëÀ» ¼³°èÇÒ ¶§ Áß¿ä½Ã µÇ´Â °ÍÀÌ Á¢Áö(grounding)´Ù.
'grounding'À̶õ ´Ü¾î´Â ¿ø·¡ Á¢Áö ÀúÇ×Ä¡¸¦ ±â¼úÀûÀ¸·Î °¡´ÉÇÑ Àû°Ô ³ª¿À°Ô Çϸ鼭, ´ëÁö¿¡ ¿¬°áÇÏ´Â Á¢Áö¶õ ¶æÀ¸·Î »ç¿ëµÆ´Ù. 'ground'°¡ ´Ü¼øÈ÷ õüÀÇ ÇϳªÀÎ Áö±¸[ÓÞò¢]¶ó´Â ¶æÀ¸·Î ´Ù½Ã Á¤ÀÇµÈ °Í°ú °°ÀÌ groundingµµ ¿ª½Ã 'safety ground(¾ÈÀü Á¢Áö)'·Î ´Ù½Ã Á¤ÀǵƴÙ. ¾ÈÀü Á¢Áö´Â Áö¶ô »ç°í °¨Áö¸¦ ÃËÁø½ÃÅ°°í, ȸ·ÎÀÇ °úÀü·ù º¸È£ ÀåÄ¡¸¦ ÀÚµ¿À¸·Î µ¿ÀÛÇÏ°Ô Çϸç, Áö¶ô ½Ã Àú ÀÓÇÇ´ø½º º¹±Í °æ·Î(À¯È¿ Áö¶ô »ç°í Àü·ù °æ·Î)¸¦ Á¦°øÇÏ´Â ¾ÈÀüÇÑ Á¢Áö¸¦ ¶æÇÑ´Ù.
º»µùÀ̶õ µµÀüüµéÀ» ¼­·Î ¿¬°áÇØ Àü±âÀûÀ¸·Î ÅëÀüÀÇ ¿¬¼Ó¼º°ú ÀüµµÀ²À» ³ôÀÌ´Â ±â¼úÀ» È®½ÇÈ÷ ÇÏ´Â °úÁ¤À» ¶æÇÑ´Ù.
¹èÀü °èÅë¿¡¼­ Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ³ëÃâ µµÀüüÀÇ »óÈ£¿¬°á ¹× º»µù°ú °èÅë ¿Ü µµÀüüµé, Áï ¼ö¿µÀå¿¡ ÀÖ´Â ±Ý¼ÓÁ¦ »ç´Ù¸®¿Í ´ÙÀ̺ù ÆÇÀÇ º»µù µî Æò¼Ò Àü·ù°¡ È帣Áö ¾Ê´Â ¸ðµç ±Ý¼Ó µµÀüüÀÇ º»µùÀº ´ëÁö¿Í °øÅë ÀüÀ§ Áï, µîÀüÀ§ À¯Áö¸¦ È®½ÇÈ÷ Çϱâ À§ÇØ Æ¯Á¤ ±ÔÁ¤¿¡ µû¶ó ½Ç½ÃÇØ¾ß ÇÑ´Ù.
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<Energy News>

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