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Quality)ÀÇ Á߿伺ÀÌ ´õ¿í ¿ä±¸µÇ¾îÁö°í ÀÖ½À´Ï´Ù. ±×·¯³ª ´ë ´Ù¼öÀÇ »ç¿ëÀÚ´Â ±×µéÀÌ °æÇèÇÑ ¡°Àü·Â¹®Á¦ÀÇ
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Æò°¡µÇ¾îÁ®¾ß ÇÕ´Ï´Ù.
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1.1 Á¶»ç´Ü°è
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1.2 Á¶»ç°èȹ ¼¼¿ì±â ¾î¶²
Àü·ÂÀÇ Ç°ÁúÁ¶»ç´Â Ç°ÁúÁ¶»ç°¡ »çÀü¿¡ Àß °èȹµÇÁö ¸ø Ç߱⠶§¹®¿¡ È®½ÇÇÑ ´ëÃ¥ ¾øÀÌ ¼ö°³¿ù µ¿¾ÈÀ̳ª °è¼ÓµÇ±âµµ ÇÑ´Ù. Á¶»ç °èȹÀº 2°³ÀÇ ÁÖ¿ä
¿ä¼Ò·Î ±¸¼ºµÈ´Ù.
¨ç Á¶»ç ´ë»ó Á¶»ç ´ë»óÀÇ ¼±Á¤Àº Á¶»ç¸¦ ¼öÇàÇϱâ À§Çؼ ¾ò¾îÁ®¾ßÇÒ ÀÚ¿ø(Àü·Â¸ð´ÏÅÍ, ¿ä¿ø µî)À» Á¤ÀÇÇÏ´Â
µ¥ µµ¿òÀ» ÁØ´Ù. ¨è È°µ¿ ¹üÀ§ : È°µ¿¹üÀ§´Â ¾ð±ÞµÈ ´ë»óÀ» Á÷Á¢ÀûÀ¸·Î µû¸¥´Ù.
1.3 Á¶»ç¸¦ À§ÇÑ Áغñ ¹®¼¿Í
µ¥ÀÌÅÍ ¼öÁý ¹× Àü·ÂÀÇ Ç°ÁúÁ¶»ç¸¦ À§ÇÑ ÇÊ¿äÇÑ ToolÀÇ À±°ûÀ» ¸»ÇÑ´Ù.
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[Ç¥ 1] ¼³ºñ
µ¹¹ß»ç°í ·Î±×
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DAY |
TIME |
DESCRIPTION |
UNUSUAL EVENTS |
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¨è Á¶»ç¸¦ À§ÇÑ Tool
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¨Í Àü·Â ¸ð´ÏÅÍ ¨Î ȸ·Î ½ÃÇè±â : Áß¼º¼± ¹× Á¢Áö¼± µîÀÇ ¹è¼± ¿¡·¯±Ô¸í¿¡ »ç¿ë ¨Ï True RMS(Root Mean
Square) ¸ÖƼ ¹ÌÅÍ¿Í ¾Ç¼¼¼¸® ¨Ð Clamp - on Àü·ù ÇÁ·Îºê(Ȧ È¿°ú Àü·ù ÇÁ·Îºê) : 2000A±îÁö »ç¿ëÇϸç DC, AC ȤÀº
DC¿Í AC ÇÕ¼ºÀü·ù¸¦ ÃøÁ¤, ÀüÀÚ±âÀå¿¡ ¹Î°¨ ¨Ñ Àû¿Ü¼± ½ºÄ³³Ê : ÀϹÝÀûÀ¸·Î Àüü Àü±â½Ã¼³¿¡ ´ëÇÑ ¹èÀü ½Ã½ºÅÛÀÇ ±¤¹üÀ§ÇÑ Á¶»ç¸¦ À§ÇØ
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1.4 À§Ä¡ Á¶»ç À§Ä¡ Á¶»ç´Â À°¾ÈÁ¶»ç¿Í ¹°ÁúÀûÀÎ Á¶»ç·Î
2°¡ÁöÀÇ È°µ¿À» ¼ö¹ÝÇÑ´Ù.
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¹®Á¦°¡ µÇ´Â Àå¼Ò¸¦ ã¾Æ³½´Ù. ÁÖ¿äÇÑ Àü±â ºÎÇÏÀÇ ¿¹´Â ´ÙÀ½°ú °°´Ù. °¡º¯¼Óµµ µå¶óÀ̺ê·UPS ½Ã½ºÅÛ·¿¤¸®º£ÀÌÅÍ·°ø±â ¾ÐÃà±â·¿ëÁ¢±â·¹åµ¥¸®
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¨è ¹°¸®ÀûÀÎ Á¶»ç Á¶»ç°úÁ¤Àº Áß¿äÇÑ ºÎÇÏ¿¡¼ Àü±â½Ã¼³ ÀÎÀÔ±¸±îÁöÀÇ ¹è¼±À» Á¶»çÇϱâ À§Çؼ ½Ã¼³ÀÇ
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[Ç¥ 2] Wire
Problems Cause Power Problems
PROBLEM |
EFFECNT |
Loose Connections |
Impulses, Voltage Drop-out |
Faulty(Hot) Breakers |
Impulses, Voltage Drop-out |
Neutral-to-Ground Tie |
Ground Current |
Neutral and Ground Reversal |
Ground Current |
High Impedance Neutral(Open) in Poly-Phase Circuit |
Extreme Voltage Fluctuation (High or Low), Neutral-to-Ground Voltage
Fluctuation |
High Impedance Neutral-to-Ground Bond at Transformer |
Voltage Fluctuation, Neutral-to-Ground Voltage Fluctuation |
High Impedance Neutral-to-Ground Bond at Service Entrance |
Voltage Fluctuation, Neutral-to-Ground Voltage Fluctuation |
High Impedance(Open) Circuit Grounding |
Neutral-to-Ground Voltage Fluctuation |
¨Í Àü±â
¹èÀü¹Ý
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1.5 Àü·Â ¸ð´ÏÅ͸µ °¡Àå ÁÁÀº ÀýÂ÷´Â ¸ðµç ¹è¼±º¸Á¤ÀÌ ¿Ï·áµÈ ÈÄ ¸ð´ÏÅÍÇÏ´Â °ÍÀÌ´Ù. ¼³ºñ ¿î¿ëÀÚÀÇ ¹®Á¦¸¦ ÇØ°áÇÏ·Á´Â Àý¹ÚÇÔÀ̳ª ½ºÄÉÁì
»óÀÇ ¾î·Á¿òÀº ¸ð´ÏÅ͸µ °úÁ¤À» ¹Ýº¹ÇÏ°Ô Çϰųª ½ÃÇàÂø¿À¸¦ À¯¹ßÇÏ¿© °ï°æ¿¡ óÇÏ´Â °æ¿ì°¡ ¹ß»ýÇϱ⵵ ÇÑ´Ù.
¨ç ±âº»ÀûÀÎ Àü¾Ð°ú
Àü·ù¸¦ ÃøÁ¤ÇÑ´Ù. ¨è Àü·Â¹®Á¦¸¦ µµÃâÇϱâ À§Çؼ Àü¾ÐÀ» °üÂûÇϸç, ¿øÀÎÀ» ¹ß°ßÇϱâ À§Çؼ Àü¾Ð°ú Àü·ù¸¦ °üÂûÇÑ´Ù. ¨é 3´Ü°èº°
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½ºÄÚÇÁ ¸ðµåÀÇ Àü¾ÐÅ©±â¿Í ÆÄÇüÀ» °üÂûÇÑ´Ù. |
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ÀúÀåÇÑ´Ù. |
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Áß¿äÇÑ µ¹¹ß »ç°í¸¦ ±â·ÏÇϸç, µ¹¹ß »ç°í¸¦ Àâ°Å³ª ¿øÀÎÀ» ºÐ¼®Çϱâ À§ÇØ ÇÊ¿ä¿¡ µû¶ó ¸ð´ÏÅ͸¦
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1.6 ºÐ¼®
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¹è¼±È¯°æÀÇ ÀçÁ¶»ç´Â [Ç¥2] Wire Problems Cause Power Problems¸¦ ÂüÁ¶ÇÑ´Ù. |
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µ¹¹ß »ç°í¸¦ ¿ä¾àÇÑ´Ù. |
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¼³ºñ»óÀÇ ÀÌ»ó ¡ÈÄ¿Í Àü·ÂÇ°Áú°£ÀÇ °ü°è´Â [Ç¥4]¿Í °°´Ù. |
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[Ç¥1]ÀÇ ¼³ºñµ¹¹ß»ç°í ·Î±×¿¡ Àü·Â¹®Á¦¸¦ ºñ±³ÇÑ´Ù. |
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Àü·Â¹®Á¦¿Í ¼³ºñµ¿ÀÛÀÇ Æ¯¼ºÀ» ºñ±³ÇÑ´Ù. ¼³ºñÀÇ ÁÖ¿äÇÑ Æ¯¼ºÀº Á¦ÇÑÀü¾Ð, ÀÓÆÞ½º, Áß¼ºÁ¡°ú Á¢Áö Àü¾ÐÀÇ ÇÑ°è¿Í Àü¾Ð°ÇÏ µîÀ» ¸ð´ÏÅÍ
µ¥ÀÌÅÍ¿Í ºñ±³ÇÑ´Ù. ÀϹÝÀûÀÎ ¼³ºñµ¿ÀÛ Ç¥ÁØÀº [Ç¥3]°ú °°´Ù. |
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Áß¿äÇÑ Àü·Â µ¹¹ß »ç°í¸¦ ºÐ·ùÇÑ´Ù. Áß¿äÇÑ Àü·Â µ¹¹ß »ç°í¸¦ ÀϹÝÀûÀÎ ¹üÁÖ·Î ºÐ·ùÇÔÀ¸·Î½á ºÐ¼®À» Çâ»ó½Ãų ¼ö
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¿øÀÎÀ» ±Ô¸íÇÑ´Ù. |
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[Ç¥ 3] ÀϹÝÀûÀÎ ¼³ºñµ¿ÀÛƯ¼º
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NORMAL TOLERANCE |
CRITICAL TOLERANCE |
Voltage Fluctuations |
105-132VAC (-12% to +10%) |
114-126VAC (-5% to +5%) |
Frequency Deviation |
47-63Hz |
59.5-60.5Hz |
Impulses |
100-300Volts (1¢¦3× Normal) |
50-100Volts (0.5¢¦1× Normal) |
Voltage Drop-outs |
20milliseconds |
4milliseconds |
N-G Voltage |
3-5Volts |
1Volts |
Harmonic Distortion(Voltage) |
10-20% Max. THD |
3-10% Max. THD |
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[Ç¥ 4] ÀÌ»ó ¡ÈÄ¿Í Àü·ÂÇ°Áú°£ÀÇ °ü°è
Suspected Interference |
Voltage Sag |
Impulse |
Voltage Distortion |
Outage |
N-G Voltage |
Repetitive Disturbance |
Overvoltage |
Remarks |
Hard Disk Crash |
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Yes |
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Yes |
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Yes |
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Semiconductor Failure |
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Yes |
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Yes |
Yes |
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AC Detect Activation |
Yes |
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Yes |
Yes |
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Yes |
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Lock Up/Me-mory Scramble |
Yes |
Yes |
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Yes |
Yes |
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Soft Errors |
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Yes |
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Yes |
Yes |
Yes |
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Breaker Trip |
Yes |
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Yes |
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Reset/Reboot |
Yes |
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Yes |
Yes |
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Measurement Error |
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Yes |
Yes |
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Yes |
Yes |
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Poor Signal to Noise Ratio |
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Yes |
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Yes |
Yes |
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Speed or Setting Drift |
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Yes |
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Yes |
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Power Supply Failure |
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Yes |
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Yes |
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Yes |
Yes |
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[Ç¥ 5] Voltage Terminology Differences
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°úµµ Çö»ó |
Àü¾Ð º¯µ¿ |
ÁÖ ±â |
0.07ÃÊ ÀÌÇÏ |
0.07 - 2ÃÊ(¹Ì±¹ 0.067 - 1ÃÊ) |
2ÃÊ ÀÌ»ó |
±¸ ºÐ |
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