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AC POWER SPD REQUIREMENTS CHAPTER 7: SURGE PROTECTIVE DEVICES TABLE 7-4 SPD SPECIFICATIONS Type Service Configura tion MCOV Required Measured Testing Safety Performance Surge Voltage Rating (SVR) UL 1449-2nd Edition Duty Cycle Test, IEEE C62.41, 200A ringwave 6kV, 500A 6kV, 200A, 100 kHz Duty Cycle Test, IEEE C62.41 Nominal Discharge Current (In) 1 6kV, 3 kA 6kV, 10 kA Maximum Discharge Current (Imax) Manual Section 7.10.3 3 7.10.3.4 7.10.3 7.10.4 Type 1 High lightning exposure or main utility service on the load side of the disconnect Type 2 High lightning exposure Service entrance Suitable for branch service applications on load side of utility disconnect Type 3 Branch circuit protection device 120/240 1φ 145 330 n/a Required VPL Recorded 120/208 3φ 145 330 n/a Required VPL Recorded 480/277 1φ 320 800 n/a Required VPL Recorded 230/380 3φ 280 n/a n/a Required VPL Recorded 120/240 1φ 145 400 n/a Required VPL Recorded 120/208 3φ 145 400 n/a Required VPL Recorded 480/277 1φ 320 800 n/a Required VPL Recorded 230/380 3φ 280 n/a n/a Required VPL Recorded 120 V 145 330 Required n/a n/a n/a 230-240V 280 570 Required n/a n/a n/a 1. Nominal Surge Current Value (In) is a single 10 kA impulse.This single impulse shall be applied at the SPDs and the Voltage Protection Level (VPL) measured and recorded. Required Required Required Required Required Required Required Required 7-32 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES AC POWER SPD REQUIREMENTS 7.4.3 INSTALLATION REQUIREMENTS All SPDs shall be installed per the manufacturer’s installation instructions and in accordance with all applicable codes. Type 1 and Type 2 devices shall be securely attached to the mounting surface and shall not depend on the interconnecting raceway for support. 7.4.3.1 LOCATION When selecting the location, consideration must be given to conductor routing, length and required number of bends in each conductor. The SPD shall be installed as close as possible to the associated main disconnect or panelboard, and in a location that permits the shortest and most direct electrical connection. The most suitable location is immediately adjacent to the associated panelboard keeping the conductor length as short as possible. To accommodate this specification some manufacturers have developed specific models for installation directly above, below, or to the right or left of the associated panelboard. 7.4.3.2 INTERCONNECTING RACEWAY OR CONDUIT The raceway or conduit between the panelboard (or disconnecting means) and the SPD shall be sized for the size and number of conductors to be routed through it. A non metallic conduit (such as PVC) or raceway is recommended. The length shall be as short as possible. This raceway shall be routed as direct as possible between the SPD, the disconnecting means (if a separate enclosure is used), and the associated panelboard. The raceway or conduit shall not be used as a support for the device. 7.4.3.3 CIRCUIT BREAKER OR DISCONNECTING MEANS The SPD shall be wired through a 60-Ampere (or larger) circuit breaker, NFPA 70-2005, Article 110.9, or in accordance with local jurisdictional codes. 7.4.3.4 CONDUCTOR SIZE, LENGTH AND ROUTING Conductor size, total circuit length, and routing are critical to proper SPD performance. The conductor shall be of the minimum size recommended by the manufacturer, however, shall not be smaller than 16 mm 2 csa (#6 AWG). Larger conductor sizes are most desirable. A maximum conductor length of 610 mm (2 ft.) is most desirable. The conductors shall be routed together and shall be free of sharp bends or angles of less than 90 degrees. 7.4.3.5 PERFORMANCE EVALUATION SPDs shall be evaluated using the specific criteria outlined in “AC Power Line SPD Test Certification Requirements” on page 7-47, and shall meet the requirements established in this section and Table 7-4 on page 7-32. Devices that do not meet this minimum criteria shall not be furnished, installed, or recommended for installation. 68P81089E50-B 9/1/05 7-33
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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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Page 291 and 292: STANDARDS AND GUIDELINES FOR COMMUN
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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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