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

More documents

Recommendations

Info

MINIMUM SITE GROUNDING (EARTHING) REQUIREMENTS CHAPTER 4: EXTERNAL GROUNDING (EARTHING) FIGURE 4-46 BUS BAR CONFIGURATION, BOTTOM GROUND KIT (ANGULAR TOWER) EXTERIOR TGB GROUNDING CONDUCTOR ROUTED IN FLEXIBLE NONMETALLIC CONDUIT TO GOUNDING ELECTRODE SYSTEM INTERIOR FIGURE 4-47 TRANSMISSION LINE GROUNDING AT BUILDING ENTRY POINT 4-66 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES MINIMUM SITE GROUNDING (EARTHING) REQUIREMENTS 4.7.10 METALLIC OBJECTS REQUIRING BONDING The objective of bonding metallic objects is to equalize the potential between conductive parts. This is done for personnel safety and to prevent arcing between metallic components that might otherwise be at different potentials. Bonding conductors shall be as short and straight as possible. (ANSI T1.313-2003, section 6.3) Metallic objects that are located within 1.8 m (6 ft.) of the external grounding (earthing) electrode system, or within 1.8 m (6 ft.) of a grounded metallic item, shall be bonded to the external grounding electrode system using 16 mm 2 csa (#6 AWG) or coarser conductors as described in “Grounding (Earthing) Conductors” on page 4-28 (ANSI T1.334-2002, section 5.3.3). Bonding to the metallic objects shall be made as allowed by the manufacturer. In high lightning prone geographical areas, or areas of high soil resistivity, it is recommended to bond all metallic objects that are located within 3 m (10 ft.) of the external grounding electrode system, or within 3 m (10 ft.) of a grounded metallic item (ANSI T1.313-2003, section 10.3.2). Metallic objects requiring bonding include, but are not limited to, the items listed below. (ANSI T1.313-2003, section 10.3.2; ANSI T1.334-2002, section 5.3.3.) • Fences • Fence posts • Fence gates • Cable Bridge/Ice Bridge • Generator frame • Skid plate or metal support frame of a prefabricated shelter • Metallic members of all incoming telecommunications cables, including paired-conductor and optical fiber (ANSI T1.313-2003, section 8.2) • Facility grounding electrode system • Main telephone company ground (if external) • Metallic entry points • Metallic conduits, piping, and raceways • HVAC units • Vent covers (if not already grounded inside) • Storage tanks (above and below grade) if allowed • External light fixtures or support masts • Any other grounding electrode systems at the site (see “Common Grounding (Earthing)” on page 4-5) NOTE: Bonding conductors installed underground shall be constructed of 35 mm 2 csa (#2 AWG) or coarser conductor. See “Grounding (Earthing) Conductors” on page 4-28. Series or daisy chain 1 connection arrangements shall not be used. (See Figure 5-20 on page 5-34 for an example of a “daisy-chained” ground connection.) 68P81089E50-B 9/1/05 4-67
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: STANDARDS AND GUIDELINES FOR COMMUN
Page 159: STANDARDS AND GUIDELINES FOR COMMUN
Page 195 and 196: CHAPTER 5 INTERNAL GROUNDING (EARTH
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:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
CHAPTER 8 MINIMIZING SITE INTERFERE
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
CHAPTER 9 EQUIPMENT INSTALLATION 9
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
APPENDIX A ELECTROMAGNETIC ENERGY I
Page 407 and 408:
Page 409 and 410:
Page 411 and 412:
Page 413 and 414:
Page 415 and 416:
Page 417 and 418:
Page 419 and 420:
Page 421 and 422:
Page 423 and 424:
Page 425 and 426:
Page 427 and 428:
Page 429 and 430:
Page 431 and 432:
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 ...

Create successful ePaper yourself

Delete template?

Save as template?