Page 487 - 35_DS702_E_2014_Lightning_Protection_Guide

Overcurrent protective device 57, 220–221, 227–229, 339 Ring distances and potential control depths 156
Overlapped constructions 116 Ring equipotential bonding 196, 208
Ring equipotential bonding bar 200, 204
P Risk analysis / assessment 9–11, 27, 31–32, 49–52, 78, 87, 158,
Parabolic antenna 74 190, 204, 276, 286, 343, 375, 390, 399, 437, 445
Parallel connection 234 Risk components 32, 45
Partitioning coefficient 95, 149, 151–154 Risk management 9, 28
Peak value 17, 19, 24, 64–65, 127, 182, 218 Rolling sphere 55, 61, 64–68, 73, 77, 82, 86, 89, 272, 276, 344, 451
Perimeter insulation 135–137 Rolling sphere method 63, 65, 67, 80, 86, 89, 100, 343–344, 370,
Personal protection 219 375, 437, 451
Petrol stations 388–390 Roof conductor holder 75–76, 113–114, 445
Phase-side connecting cable 237 Roof-mounted structures 37, 66–69, 72–73, 75, 83–84, 89–90,
104–106, 167, 247, 287, 411
Pin-shaped terminal (STAK) 234–235 Roof-mounted structures made of non-conductive material 73
Potential control 37, 47, 52, 119, 128, 140, 142, 155–157, 168,
170, 271, 394, 417, 419–420 Rooftop PV systems 74–75, 84, 363–373
Potential gradient area 17, 418 RRH 355–361
Potential rise 19, 168, 256, 335 RRU 355–361
Potential values and corrosion rates of common metal materials 145 S
Potentially explosive atmospheres 108, 437
Power supply system 180, 202, 206, 208, 210, 217, 280, 375 Safety lighting systems 339, 433–434
Primary multiplex connection 336 Safety rope systems 93
Safety rope systems and lightning protection 93–94
Probability of damage 32, 36–38 Sag of the rolling sphere 55, 66–67, 276
PROFIBUS 282, 288, 331–332 Selection criteria 247, 251, 257, 259, 440
Protected volume 55, 68–69, 74–75, 79–80, 89, 92, 105, 182, 280,
293, 306, 356, 364, 370, 375, 377, 394, 420 Selection criteria for electrical temperature measuring equip-
ment 251
Protection module 263 Selection criteria for SPDs – BLITZDUCTOR XT 257
Protection of terminal devices / equipment 207, 210, 217, 249, 260,
280, 359–360, 366, 427 Selection of lightning protection measures 45–46, 49
Protective angle method 63, 68–69, 71–75, 82, 287, 370, 375 Self-supporting air-termination rod 90. 92–93
Protective angle method for isolated air-termination systems 69 Separation distance 10, 52–54, 57, 69, 71–74, 79, 81, 83, 86–89,
93, 95–96, 100–101, 103–104, 109–110, 149–155, 158, 167,
Protective bonding conductor 30, 168, 172, 178, 295, 453 276–277, 279, 346, 364, 370–371, 412, 420, 438
Protective equipotential bonding 177–180, 201, 237, 292, 298 Series connection 234
Public address systems 305–306 Sewage plant 285–289
PV systems 30, 84, 103, 363–373, 375–383 Shelters 155, 158, 397, 417–420
Shield earthing 182–183, 196–198, 261, 351, 382–383
R Shielding 37–40, 51, 188, 190, 194–195, 196, 207, 261, 320,
Radial earth electrode 123–124, 128, 399 343–345, 439
Radio transmission technology 355–361 Shielding effect 191, 194, 199
Radius of the rolling sphere 61, 64–66, 68, 86 Shielding factor SF 193
Rainproof / rain safety 77, 99 Short-circuit current 172, 218–219, 228, 239, 243, 280, 379, 441
Rated current 169, 240, 243, 407 Short-circuit withstand capability 218, 239
Rated impulse withstand voltage 38, 50, 207, 347 Signal frequency 198, 249
Rated voltage 212, 217, 380 Slated roofs 115
RCD (residual-current device) 221–222, 227–229, 232–233, 267 Smoke and heat extraction systems 411–414
Red/Line 210, 219, 229, 289 Sound signals 30, 291–294
Reference earth 118–119, 126 Sources of damage 31–32, 45
Reference electrode 143 SPD class symbol, Yellow/Line 206, 213–214, 250, 321
Reference potential 105, 143, 351 SPD class, Yellow/Line 206, 213–214, 250, 321
Reinforced concrete 37–38, 130, 156 Specific energy 17, 21–23, 218
Reinforcement steel mat 419 SPM (surge protection measures) 38, 46, 190, 343
Residual-current device 220–221, 228 Sports grounds 10, 155, 393–385
Ridge and hip tiles 114–115 SPS Protector 209

486 LIGHTNING PROTECTION GUIDE www.dehn-international.com