standards and guidelines for communication sites - Radio And ...

More documents

Recommendations

Info

EQUIPMENT INSTALLATION WITHIN RACKS OR CABINETS CHAPTER 9: EQUIPMENT INSTALLATION When anchoring cable trays to ceilings or walls, the manufacturer-supplied support hardware shall be used. Anchors used in overhead applications vary depending on the ceiling structure as follows: • For concrete and wood ceilings, the same principles discussed in floor anchoring apply. • For an exposed steel I-Beam ceiling, many cable runway manufacturers make beam clamps for Cchannel or threaded drop rods. • For corrugated steel ceilings, C-channel tracks can be affixed to the ceiling using properly sized lag bolts. The C-channel will span the corrugated steel and provide multiple anchor points. For drywall or plasterboard ceilings, special considerations are required: • If the drywall is on steel or wooden roof joists, locate and tap into the roof joists with lag bolts. • C-channel mounting can be used. • An alternative to C-channel mounting is using large toggle or molly wings with hex head tap bolts. NOTE: Make certain joists are properly located before drilling into drywall. If any existing equipment is on site, ensure it is covered with an anti-static tarp or covering. 9.7 EQUIPMENT INSTALLATION WITHIN RACKS OR CABINETS Most communication equipment is mounted into standard 19-in EIA racks or enclosed cabinets. Follow the rack and/or equipment manufacturer’s instructions when installing equipment into racks or cabinets. • All supplied bracing hardware shall be properly utilized. • Proper hardware shall be used to secure equipment. • See Chapter 5 for proper equipment grounding. • Convected heat transfer from one piece of equipment rack to another shall be considered. Heat baffles or fan kits may be required. WARNING Do not mount heavy equipment at the top of the equipment rack or cabinet. It may cause the rack to become top-heavy and unstable. 9.8 ANCILLARY EQUIPMENT MOUNTING Any permanent site equipment that is not rack- or cabinet-mounted, should be permanently secured or mounted, including items placed on rack- or cabinet-mounted peripheral trays. 9-10 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES EQUIPMENT CABLING 9.9 EQUIPMENT CABLING This section describes requirements for cabling within equipment cabinets and racks, and requirements for cable runs between equipment cabinets/racks. Cabling within racks and cabinets shall conform to the requirements of NFPA 70-2005, Article 300, Article 800, Article 810, Article 820, and Article 830. (See ANSI/TIA/EIA-568(b) and 569(b) and NECA/BICSI 568-2001 for additional information.) 9.9.1 CABLING REQUIREMENTS FOR EQUIPMENT IN RACKS AND CABINETS All cables shall be installed and routed so that personal safety and equipment functionality is not compromised and that all equipment is accessible for servicing. The following requirements apply to cabling installed in racks or cabinets: 9.9.1.1 SECURING CABLES WITHIN RACKS OR CABINETS • To help prevent damage or accidental disconnection, cables and conductors shall be secured at intervals of no more than 914 mm (3 ft.). Attachment shall be accomplished in a manner that does not restrict access to the equipment in the rack or cabinet. • Insulated standoffs are recommended for use in racks or cabinets. The standoffs should be of sufficient length to maintain the proper cable separation. • Nonmetallic cable ties shall be used to secure cables and conductors. Attachment shall be tight enough to secure cables without crushing or deforming them. • Nonmetallic cable ties must be cut with flush cut sidecuts directly adjacent to the locking tab to prevent sharp protrusions. 9.9.1.2 ROUTING CABLES WITHIN RACKS AND CABINETS • Grounding conductors within racks or cabinets shall be routed toward the RGB, MGB, SSGB, or ground bus conductor. Connections to the RGB or ground bus conductor shall always be made with the equipment grounding or tap conductors being routed toward the MGB, SSGB, or RGB. See Figure 5-17 on page 5-24 for an example. • Whenever possible, cable groups of different types should maintain 50.8 mm (2 in.) separation when passing through the cabinet housing. When the 50.8 mm (2 in.) separation cannot be maintained at the through the cabinet housing penetration, separation shall be maintained before and after the penetration point. See Figure 5-14 on page 5-22 for an example. • Cables in racks or cabinets shall be sized to length, and shall be installed and routed neatly and in a workmanlike manner. • AC power cords longer than necessary may be looped down and back up a rack or cabinet. Excess lengths of AC power cord shall not be coiled on top of racks or cabinets. 9.9.1.3 PROTECTING CABLES WITHIN RACKS AND CABINETS • Where cables or conductors are routed through holes in metallic surfaces or near sharp edges, the sharp surfaces shall be suitably protected with a grommet or similar material to help protect the cable or conductor from damage caused by sharp edges. • Ensure cables ar not crimped or bent when cabinet doors are opened or closed. 68P81089E50-B 9/1/05 9-11
Page 1 and 2:
© 2005 MOTOROLA, INC. ALL RIGHTS R
Page 3 and 4:
TABLE OF CONTENTS Chapter 1. Introd
Page 5 and 6:
STANDARDS AND GUIDELINES FOR COMMUN
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
CHAPTER 1 INTRODUCTION 1 This manua
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
CHAPTER 2 SITE DESIGN AND DEVELOPME
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
CHAPTER 3 COMMUNICATION SITE BUILDI
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
CHAPTER 4 EXTERNAL GROUNDING (EARTH
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
CHAPTER 5 INTERNAL GROUNDING (EARTH
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
CHAPTER 6 POWER SOURCES 6 6.1 LOCKO
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
CHAPTER 7 SURGE PROTECTIVE DEVICES
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332: STANDARDS AND GUIDELINES FOR COMMUN
Page 363 and 364: CHAPTER 8 MINIMIZING SITE INTERFERE
Page 373 and 374: CHAPTER 9 EQUIPMENT INSTALLATION 9
Page 381: STANDARDS AND GUIDELINES FOR COMMUN
Page 405 and 406: APPENDIX A ELECTROMAGNETIC ENERGY I
Page 433 and 434:
APPENDIX B SOIL RESISTIVITY MEASURE
Page 435 and 436:
Page 437 and 438:
Page 439 and 440:
Page 441 and 442:
Page 443 and 444:
Page 445 and 446:
Page 447 and 448:
Page 449 and 450:
Page 451 and 452:
Page 453 and 454:
Page 455 and 456:
Page 457 and 458:
Page 459 and 460:
Page 461 and 462:
Page 463 and 464:
Page 465 and 466:
Page 467 and 468:
APPENDIX C PROTECTING AGAINST ELECT
Page 469 and 470:
Page 471 and 472:
APPENDIX D GROUNDING (EARTHING) ELE
Page 473 and 474:
Page 475 and 476:
Page 477 and 478:
Page 479 and 480:
Page 481 and 482:
Page 483 and 484:
Page 485 and 486:
Page 487 and 488:
Page 489 and 490:
Page 491 and 492:
Page 493 and 494:
Page 495 and 496:
Page 497 and 498:
APPENDIX E GENERAL CONVERSIONS AND
Page 499 and 500:
Page 501 and 502:
Page 503 and 504:
APPENDIX F R56 COMPLIANCE CHECKLIST
Page 505 and 506:
Page 507 and 508:
Page 509 and 510:
I NDEX Index Index AC power cabling
Page 511 and 512:
Page 513 and 514:
Page 515 and 516:
Page 517 and 518:
show all

standards and guidelines for communication sites - Radio And ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?