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[E-NEWSLETTER] Power*Tools ´º½º·¹ÅÍ 6¿ùÈ£ - 'Arc Flash À§Çè ºÐ¼®-À¯Æ¿¸®Æ¼ µ¥ÀÌÅÍ ÀÌÇØ ¹× »ç¿ë'

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2020-06-23 14:02:25 Á¶È¸ :2829


 

Power*Tools : Arc Flash

Arc Flash À§Çè ºÐ¼® - À¯Æ¿¸®Æ¼ µ¥ÀÌÅÍ ÀÌÇØ ¹× »ç¿ë


¼¼°è ÃÖÃÊ, ±Û·Î¹ú NO.1 Àü·Â°èÅë Çؼ® ½Ã½ºÅÛ

- Àü±â ¿£Áö´Ï¾î¸µÀÇ Golden Standard, ¼º´É/À¯¿¬¼º/Ç°ÁúÀÌ ÀÔÁõµÈ Power*Tools -

- ¹Ì) SKM»ç Power*Tools ±¹³» °ø½Ä ´ë¸®Á¡ (ÁÖ)ºí·çÇò - 

 

 

¢ºArc Flash À§Çè ºÐ¼® : À¯Æ¿¸®Æ¼ µ¥ÀÌÅÍ ÀÌÇØ ¹× »ç¿ë

ÀϹÝÀûÀ¸·Î À¯Æ¿¸®Æ¼¿¡¼­ »ç¿ë °¡´ÉÇÑ ´Ü¶ô Àü·ù (three phase and single line to ground)¿Í ÇØ´ç X / R ºñÀ²Àº À¯Æ¿¸®Æ¼¿¡¼­ Á¦°øÇÏ´Â Á¤º¸ÀÔ´Ï´Ù. ±×·¯³ª Arc Flash À§Çè ºÐ¼®À» ¼öÇàÇÒ ¶§´Â ¼­ºñ½º º¯¾Ð±â¿Í µµÃ¼ µ¥ÀÌÅ͸¦ º¸È£ ÀåÄ¡¿¡¼­ ¼­ºñ½º º¯¾Ð±â·Î º¸È£ÇÏ´Â 1Â÷ °úÀü·ù º¸È£ ÀåÄ¡ Á¤º¸¸¦ ¾ò´Â °ÍÀÌ Áß¿äÇÕ´Ï´Ù. ÀÌ Ãß°¡ À¯Æ¿¸®Æ¼ Á¤º¸¸¦ ¾ò´Â ÀÌÀ¯´Â ¼­ºñ½º Àåºñ¿¡¼­ °è»êµÈ Arc Flash incident energy¿¡ ´ëÇÑ 1Â÷ ¼­ºñ½º º¯¾Ð±â º¸È£ÀÇ ¿µÇâÀ» ºÐ¼®Çϱâ À§ÇÑ °ÍÀÔ´Ï´Ù.

ÀúÀü¾Ð¿¡¼­ ÀÌ incident energy´Â ÀϹÝÀûÀ¸·Î 40 cal / cm2¸¦ ÃÊ°úÇϹǷΠÅëÀü Áß¿¡´Â ÀÌ ÆгÎÀ» À¯ÁöÇÒ ¼ö ¾ø½À´Ï´Ù. ±×·¯³ª 1Â÷ º¸È£(primary protection)ÀÇ ¿µÇâÀ» Æ÷ÇÔÇÒ ¶§ ÀÌ »ç°í ¿¡³ÊÁö¸¦ °ü¸® °¡´ÉÇÑ ¼öÁØÀ¸·Î ÁÙÀÏ ¼ö ÀÖ½À´Ï´Ù.

´ÙÀ½Àº ÀÌ Ãß°¡ À¯Æ¿¸®Æ¼ Á¤º¸°¡ Arc Flash incident energy °á°ú¿¡ ¾î¶»°Ô ¿µÇâÀ» ¹ÌÄ¡´ÂÁö¸¦ º¸¿©ÁÖ´Â ¸î °¡Áö ¿¹ÀÔ´Ï´Ù. 

 

¢ºNo Primary Protection 

¢ºPrimary Protection 

 

óÀ½ µÎ ȸ·Î¿¡´Â 4.16kV (MV) ÀÌÂ÷ Àü¾ÐÀÌ ÀÖ°í ¸¶Áö¸· µÎ ȸ·Î¿¡´Â 480V (LV) ÀÌÂ÷ Àü¾ÐÀÌ ÀÖ½À´Ï´Ù.

´ÙÀ½Àº 1Â÷ º¸È£(primary protection)°¡ ¾ø´Â °æ¿ì SE-1¿¡¼­ SE-4±îÁöÀÇ ÀÔ»ç ¿¡³ÊÁö¸¦ º¸¿©ÁÝ´Ï´Ù.

Medium-Voltage(MV) ¼­ºñ½º ÆгÎÀÇ °æ¿ì ÀÔ»ç ¿¡³ÊÁö´Â Ä«Å×°í¸® 3 level¿¡ ÇØ´çÇÕ´Ï´Ù.  Low-Voltage(LV) ¼­ºñ½º Æгο¡´Â À§Çè ¹üÁÖ°¡ ÀÖ½À´Ï´Ù. ´ÙÀ½Àº ÇöÀç »ç°í ¿¡³ÊÁö °è»ê¿¡¼­ 1Â÷Àû º¸È£(primary protection)ÀÇ È¿°ú°¡ °í·ÁµÇ°í ÀÖÀ½À» º¸¿©ÁÝ´Ï´Ù. 

 

1Â÷Àû º¸È£(primary protection)±â´ÉÀÌ ¾ø´Â °æ¿ì¿Í ºñ±³ÇÏ¿© °á°ú°¡ »ó´çÈ÷ ´Ù¸¨´Ï´Ù. 

°á°ú¸¦ ÀÌÇØÇϱâ À§ÇØ °¢ »ç·Ê¸¦ ÀÚ¼¼È÷ ºÐ¼®ÇÕ´Ï´Ù.

 ¢ºFirst Case (With Protection)

Primary Protection: Fuse. 

  • Secondary Side Voltage: 4.16 kV
  • The calculated incident energy is reduced by FU-UTIL-1 at SE-1 from 16
  • cal/cm2 to 1.9 cal/cm2.

¢ºSecond Case (With Protection)

Primary Protection: Relay

Secondary Side Voltage: 4.16 kV

The calculated incident energy is not reduced by REL-UTIL-2 at SE-2. It remained at 21 cal/cm2. Lowering the time delay settings (but sacrificing downstream coordination) could achieve more mitigation.

 

¢ºThird Case (With Protection)

Primary Protection: Fuse

Secondary Side Voltage: 480 V

The calculated incident energy is not reduced by FU-UTIL-3 at SE-3. The clearing time of the fuse is above the maximum arcing time of 2 seconds. 

 

¢ºFourth Case (With Protection) 

Primary Protection: Relay

Secondary Side Voltage: 480 V

The calculated incident energy is reduced by REL-UTIL-4 at SE-4 from 154 cal/cm2 to 24 cal/cm2.

 

¢ºSummary

Case 1°ú  Case 4¿¡¼­ 1Â÷ º¸È£(primary protection)´Â »ç°í ¿¡³ÊÁö ¿ÏÈ­¿¡ Å« ¿µÇâÀ» ¹ÌÃƽÀ´Ï´Ù. Case 2¿Í Case 3¿¡¼­ incident energy´Â µ¿ÀÏÇÏ°Ô À¯ÁöµÇ¾ú½À´Ï´Ù. 

1Â÷ º¸È£(primary protection)°¡ ½ÇÁúÀûÀÎ »ç°í ¿¡³ÊÁö ¿ÏÈ­ È¿°ú¸¦ °®´ÂÁö ¾Ë ¼ö ¾ø´Ù°í °á·ÐÀ» ³»¸± ¼ö ÀÖ½À´Ï´Ù. ¾Ë ¼ö ÀÖ´Â À¯ÀÏÇÑ ¹æ¹ýÀº º¸È£ ±â´ÉÀ» Æ÷ÇÔ½ÃÅ°°í °è»êÀ» ¼öÇàÇÏ´Â °ÍÀÔ´Ï´Ù. 

µû¶ó¼­ ƯÈ÷ ¼­ºñ½º Æгο¡ Æ÷ÇÔµÇÁö ¾ÊÀº À§ÇèÇÑ »ç°í ¿¡³ÊÁö°¡ ÀÖ´Â °æ¿ì 1Â÷ º¸È£(primary protection)À» Æ÷ÇÔÇÏ´Â °ÍÀÌ ÁÁ½À´Ï´Ù. 

 

 
 

New SKM Power*Tools for Windows

V9.0.0.7 Software Update!

Power*Tools ¹öÀü 9.0.0.7ÀÌ Ãâ½ÃµÇ¾úÀ½À» ¾Ë·Áµå¸³´Ï´Ù.

PTW ¹öÀü 9.0ÀÇ ÃÖÃÊ ¸±¸®½º ÀÌÈÄ ¼ÒÇÁÆ®¿þ¾î°¡ ¸¹ÀÌ º¯°æµÇ°í Çâ»óµÇ¾ú½À´Ï´Ù.


¢ºWHAT'S NEW IN VERSION 9.0.0.7: 

1. QR ÄÚµå À̹ÌÁö °æ·Î À§Ä¡¸¦ Arc Flash Label Àμâ â¿¡ Ãß°¡ÇÏ¿´½À´Ï´Ù. 2. Arc Flash »ç¿ëÀÚ ³ëÆ®¸¦ 3¿­·Î ÁÙ¿´½À´Ï´Ù. 3. Component Editor¿¡ DC Cable Ampacity Çʵ带 Ãß°¡Çß½À´Ï´Ù. 4. ¸ðµç ½Ã³ª¸®¿À¿¡¼­ ¹ö½º, ¶óÀÎ ¹× ·Îµå »çÀÌµå °£ÀÇ ÃÖ¾ÇÀÇ °á°ú¿¡ ´ëÇÑ °³¼±µÈ Arc Flash º¸°í. 5. Â÷´Ü±â Áö¿¬ ´ë¿ª ¹× ÄÆ¿ÀÇÁÀÇ Çâ»óµÈ TCC Ç÷ÎÆÃ. 6. ÀϹÝÀûÀÎ ¹ö±× ¼öÁ¤ ¹× °³¼±. 7. º¸È£ ÀåÄ¡ ¶óÀ̺귯¸®¸¦ ¾÷µ¥ÀÌÆ®Çß½À´Ï´Ù.

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