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AC POWER SPD REQUIREMENTS CHAPTER 7: SURGE PROTECTIVE DEVICES To Alarm Reporting System (Recommended) To Alarms Panel (Recommended) To Alarms Panel (Recommended) Shelter, equipment room or area. SPD (Surge Suppressor) Type 1 SAD/MOV SPD (Surge Suppressor) Type 1 SAD/MOV SPD (Surge Suppressor) Type 2 MOV Disconnect Switch To Alarms Panel Panelboard "B" with Main Breaker Utility Panelboard "A" Main Service Disconnect UPS Automatic Transfer Switch Feed from Utility Panelboard "A" Type 3 SPD optional To Alarms Panel in main shelter Type 3 SPD optional when greater than 10 conductor feet from panelboard. Meter Utility Feed AC 240/120 Single Phase 208/120 3 Phase FIGURE 7-13 SPD INTERCONNECT BLOCK DIAGRAM ‘L’ 1. The feeder to the adjacent shelter is 3 conductors with ground for single phase or 4 conductors with ground for 3 phase. 2. No critical loads should be placed within the adjacent shelter or building unless a separately derived system is installed within the adjacent shelter. This could be in the form of a transformer or a suitable UPS system. 3. The main service disconnect, Automatic Transfer Switch and utility panelboard "A" are collocated within the equipment area. Panelboard "B" is located within another adjacent shelter or building. 4. The SPDs shall be installed per the manufacturers installation instructions. 5. All conductors between the SPD and the associated disconnecting devices shall be as short as possible and routed together with a minimal number of bends or angles. 6. The SPD disconnecting devices should be installed in the top most space available in Panelboards "A" & "B". 7. Installation of Type 3 SPDs on each critical load is recommended where the level of exposure is high. 8. Installation of Type 3 SPDs on each non-critical load that is located greater than 3 m (10 ft.) of conductor length from the panelboard is recommended where the level of exposure is high. 7-22 68P81089E50-B 9/1/05 Non-Critical Loads Critical Loads Non-Critical Loads UPS Panelboard Type 3 SPD optional when greater than 10 conductor feet from panelboard. Generator Other building or shelter with communications equipment installed NOTES:
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES AC POWER SPD REQUIREMENTS To Alarm Reporting System (Recommended) To Alarms Panel (Recommended) To Alarms Panel (Recommended) Shelter, equipment room or area. SPD (Surge Suppressor) Type 1 SAD/MOV SPD (Surge Suppressor) Type 1 SAD/MOV SPD (Surge Suppressor) Type 2 MOV Disconnect Switch To Alarms Panel Panelboard "B" with Main Breaker Utility Panelboard "A" Main Service Disconnect UPS Automatic Transfer Switch Feed from UPS Panelboard in main shelter Type 3 SPD optional To Alarms Panel Type 3 SPD optional when greater than 10 conductor feet from panelboard. Meter Utility Feed AC 240/120 Single Phase 208/120 3 Phase FIGURE 7-14 SPD INTERCONNECT BLOCK DIAGRAM ‘M’ 1. The feeder to the adjacent shelter is 3 conductors with ground for single phase or 4 conductors with ground for 3 phase. 2. No critical loads should be placed within the adjacent shelter or building unless a separately derived system is installed within the adjacent shelter. This could be in the form of a transformer or suitable UPS system. 2. The main service disconnect, Automatic Transfer Switch and utility panelboard "A" are collocated within the equipment area. Panelboard "B" is located within another adjacent shelter or building. 3. The SPDs shall be installed per the manufacturer’s installation instructions. 4. All conductors between the SPD and the associated disconnecting devices shall be as short as possible and routed together with a minimal number of bends or angles. 5. The SPD disconnecting devices should be installed in the top most space available in Panelboards "A" & "B". 6. Installation of Type 3 SPDs on each critical load is recommended where the level of exposure is high. 7. Installation of Type 3 SPDs on each non-critical load that is located greater than 3 m (10 ft.) of conductor length from the panelboard is recommended where the level of exposure is high. 68P81089E50-B 9/1/05 7-23 Non-Critical Loads Critical Loads Non-Critical Loads UPS Panelboard Type 3 SPD optional when greater than 10 conductor feet from panelboard. Generator Other building or shelter with communications equipment installed NOTES:
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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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CHAPTER 6 POWER SOURCES 6 6.1 LOCKO
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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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