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POWER QUALITY CHAPTER 6: POWER SOURCES NORMAL SAG SWELL FLUCTUATIONS FIGURE 6-5 VOLTAGE SAGS, SWELLS, AND FLUCTUATIONS LIGHTNING FIGURE 6-6 TYPICAL TRANSIENT VOLTAGES FIGURE 6-7 HARMONIC DISTORTION EXAMPLE FIGURE 6-8 NOISE EXAMPLE SYSTEM SWITCHING 6-14 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES POWER QUALITY 6.3.3 COMMON EFFECTS OF POWER QUALITY PROBLEMS The following table summarizes the common effects of power quality problems on connected equipment: TABLE 6-2 COMMON EFFECTS OF POWER QUALITY PROBLEMS Problem Common Effect Frequency Deviation • Writing errors in any electronic writing device • Incorrect clock timing Voltage Sags (or dips) • Equipment shutdown • Power supply interruptions • CPU lock up • Data errors Voltage Swells • Microprocessor failure • Progressive damage to power supplies Transients • Damage to microprocessors • Data errors or loss • Lock ups • Catastrophic failure of electronic equipment Total Harmonic Distortion (> 5%) • Failure of microprocessor controlled equipment • Overheating of electrical system components • Decreased life expectancy of electrical system trans<strong>for</strong>mers • Circuit breakers tripping 68P81089E50-B 9/1/05 6-15
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© 2005 MOTOROLA, INC. ALL RIGHTS R
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TABLE OF CONTENTS Chapter 1. Introd
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STANDARDS AND GUIDELINES FOR COMMUN
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CHAPTER 1 INTRODUCTION 1 This manua
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CHAPTER 2 SITE DESIGN AND DEVELOPME
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CHAPTER 3 COMMUNICATION SITE BUILDI
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CHAPTER 4 EXTERNAL GROUNDING (EARTH
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CHAPTER 5 INTERNAL GROUNDING (EARTH
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Page 229 and 230: STANDARDS AND GUIDELINES FOR COMMUN
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CHAPTER 8 MINIMIZING SITE INTERFERE
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CHAPTER 9 EQUIPMENT INSTALLATION 9
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APPENDIX A ELECTROMAGNETIC ENERGY I
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APPENDIX B SOIL RESISTIVITY MEASURE
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APPENDIX C PROTECTING AGAINST ELECT
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APPENDIX D GROUNDING (EARTHING) ELE
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APPENDIX E GENERAL CONVERSIONS AND
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APPENDIX F R56 COMPLIANCE CHECKLIST
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I NDEX Index Index AC power cabling
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