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Lightning equipotential bonding 10, 39, 47, 52, 57, 61, 82, 88, 113, Maintenance of the LEMP protection 214
127, 151, 181, 201–207, 237, 243, 272, 280, 287–288, 291, Maintenance of the lightning protection system 55
302, 314–315, 326, 332, 340, 347, 364, 371, 375–376, 386, Maintenance strategies for installations 263
390, 393–394, 397, 401, 403, 427, 433–434, 443, 447–448
Lightning impulse current 22, 211, 213, 218, 221, 240, 242, 345, Maintenance test 56–57
427 Manufacturer’s test 164
Lightning impulse current carrying capability 202, 365, 380 Material combinations 112, 165
Lightning interference on the IT cabling 255 Material combinations of earth-termination systems 147
Lightning protection earthing 118–119, 141, 160 Material factor 101, 149–150, 172
Lightning protection for a metal roof 76–78 Material of air-termination conductors, air-termination rods, earth
Lightning protection for a residential building 113 entries and down conductors 110
Lightning protection level (LPL) 23–24, 37, 39, 57, 61, 64–65, 167, Material, configuration and minimum dimensions of earth elec-
182, 190, 192–193, 202, 229, 343–344 trodes 148
Lightning protection mast 151, 420 Maximum continuous operating voltage U C 217–218, 267
Lightning protection specialist 10, 55, 130, 190, 418 Measurements 57, 144, 146, 252
Lightning protection system 10, 27, 36–38, 46–47, 49–58, 61, 80, Measuring and control systems 252
87, 94, 96, 99, 103, 119, 134, 153, 155, 167–168, 208, 255, Melting 21, 72, 96, 240
276, 279, 287, 332, 335, 340, 343–345, 363–364, 375, 389, Mesh method 63, 68, 75
417–418, 437 Meshed air-termination system / network 68, 73, 75, 83
Lightning protection zone (LPZ) 11, 55, 183, 187–190, 195, 202,
207, 217, 268, 271–272, 286–287, 343, 347, 350, 413, 437 Meshed earth-termination systems 141
Lightning protection zone concept 61, 181, 183, 187–190, 248, Metal roof 72, 76–78, 155, 420
250, 286–287, 289, 343, 347, 349, 350–351, 437 Metal roof with round standing seam 77
Limiting voltage 235, 246–247 Metal roof-mounted structures without conductive connection 73
LON (local operating network) 385–386 Meter 325–326
Longitudinal voltage 442 Minimum cross-sectional area of air-termination conductors, air-
Loops 95–96, 313, 386, 403 termination rods, earth entry rods and down conductors 110
Loss factor 32, 445 Minimum thickness of sheet metal 72
Low voltage 12, 30, 168, 172–173 Mobile radio systems (4G/LTE) 355–361
Low-voltage cable 386 Mounting dimensions for external lightning protection systems 110
Low-voltage consumer’s installation 177–178, 180, 202, 218, 237,
287, 443 N
Low-voltage distribution board 171 Natural components of a down conductor 97, 155
Low-voltage distribution system 220 Natural components of air-termination systems 72
Low-voltage installation 171, 204 Natural earth electrode 119
Low-voltage main circuit breaker 171 No melting 240
Low-voltage operational earth electrode 143 Nodal analysis 52, 155
Low-voltage system 89, 202, 212, 370 Nominal current I L 247
LPS (lightning protection system) 23, 36–38, 47, 52, 55–56, 61, 72, Nominal discharge current I n 218
149–150, 154, 180, 343–345, 438 Non-isolated air-termination system 69
LPZ (lightning protection zone) 11, 38, 154, 183–184, 187–188, Non-isolated lightning protection system 69, 96
190–193, 199–209, 212, 214, 217, 268, 271–272, 286–287,
311, 313, 343, 347, 350–351, 411, 413, 427, 430, 433–434, Non-reinforced concrete 130
437, 439–440, 443, 447 Non-reinforced foundation 138
NTBA 280, 336
M NTPM 336
M-bus 253, 325–328 Number of down conductors 57, 95, 129, 151, 154, 287, 365–366,
Magnetic field 100, 102, 159, 187–188, 191–196, 199 380
Magnetic shield attenuation 191, 195
Main earthing busbar (MEB) 50, 127, 168, 171, 173, 177, 291, O
293–295, 313, 346, 377, 386, 403 Optical fibre 181–182, 254–255, 319–321, 355
Main equipotential bonding 180, 183, 237, 321 Optocoupler 245, 252
Main low-voltage distribution board 171, 394, 397 Other materials 147
Main power supply system 180, 315 Outdoor lighting systems 271–272
Maintenance 9–10, 29, 47, 55, 57–58, 214, 256, 263–264, 280, 352 Outer zones 187

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