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Figure 9.19.13 Lightning protection concept for a PV power plant with Figure 9.28.3 Installation of a high-voltage-resistant CUI Conductor:
string inverter. . . . . . . . . . . . . . . . . . . . . . . . 382 a) in case of a small shelter with two air-termination rods;
Figure 9.19.14 Basic principle of induction loops in PV power plants . . . 383 b) in case of insufficient wall thicknesses . . . . . . . . . 419
Figure 9.20.1 Structure of a LonWorks node with neuron chip, trans- Figure 9.28.4 Insulation of the standing surface to prevent step voltage:
ceiver and I / O circuit. . . . . . . . . . . . . . . . . . . . 385 a) by means of asphalt; b) by means of a wood floor . . . 419
Figure 9.28.5 Potential control to reduce step voltage . . . . . . . . . . 420
Figure 9.20.2 Induction loop caused by two nodes . . . . . . . . . . . . 385
Figure 9.28.6 Isolated lightning protection system with telescopic
Figure 9.20.3 Induction loop caused by a magnetic valve attached to lightning protection mast. . . . . . . . . . . . . . . . . . 420
a metallic pipe . . . . . . . . . . . . . . . . . . . . . . . 386
Figure 9.29.1 Control unit protected by surge arresters in a structure
Figure 9.20.4 Surge protective devices for an LPT in a combination without external lightning protection system . . . . . . . 423
topology extending beyond buildings . . . . . . . . . . . 386
Figure 9.29.2 Installation of lightning current and surge arresters if
Figure 9.20.5 Surge protective devices for an FTT in a combination the control unit is located far from the entry point into
topology extending beyond buildings . . . . . . . . . . . 386 a structure with external lightning protection system . . . 424
Figure 9.21.1 Petrol station with lightning protection system, inter- Figure 9.29.3 Installation of lightning current arresters if the control
meshed earth-termination system, protective and func- unit (loss is accepted) is located near the entry point into
tional equipotential bonding and surge protective devices . 389 a structure with external lightning protection . . . . . . . 425
Figure 9.22.1 Number of lightning strikes registered in Germany from Figure 9.30.1 Prewired and application-optimised DEHNshield
1996 to 2011 . . . . . . . . . . . . . . . . . . . . . . . . 393 combined arrester with spark gap technology . . . . . . . 427
Figure 9.22.2 Lightning equipotential bonding by means of Figure 9.30.2 Application-optimised use of DEHNshield with reference
DEHNventil M . . . . . . . . . . . . . . . . . . . . . . . 394 to an under-road radiator at the entrance to an under-
Figure 9.22.3 DEHNconductor HVI light Conductor . . . . . . . . . . . . 394 ground car park (2a), a lamp post and a CCTV system (2b) . 428
Figure 9.22.4 HVI Conductor installed at a pylon . . . . . . . . . . . . . 394 Figure 9.30.3 Application-optimised use of DEHNshield with reference
Figure 9.22.5 Protected volume for a cable route. . . . . . . . . . . . . 395 to a charging station for electric vehicles or an outdoor
socket outlet (3a) and a barrier system (3b) . . . . . . . . 429
Figure 9.22.6a Potential control on a pylon . . . . . . . . . . . . . . . . 395
Figure 9.31.1 Central battery system, feeder cable, battery cabinet
Figure 9.22.6b Potential control on a pylon . . . . . . . . . . . . . . . . 395 feeder cable, bus line, remote indication line, LAN line as
Figure 9.23.1 Protection of a shelter with one entrance and defined well as continuous / standby circuit lines in LPZ 1 and in
direction of access against step and touch voltage. . . . . 397 the same fire compartment. . . . . . . . . . . . . . . . . 433
Figure 9.23.2 Surge protection for the low-voltage and IT supply lines Figure 9.31.2 Lightning equipotential bonding for the circuits of the
of a club house . . . . . . . . . . . . . . . . . . . . . . . 398 safety lighting system at the zone transition from the
Figure 9.23.3 Caddy / trolley shed with integrated driving range pro- building to the ground . . . . . . . . . . . . . . . . . . . 433
tected against surges as well as step and touch voltage . 399 Figure 9.31.3 Lightning equipotential bonding at an E 30 line in an
E 30 distribution board (inside of the outer wall). . . . . . 434
Figure 9.23.4 Pressurised pipe with branch pipes, magnetic valves,
two-wire ring conductor and decoders . . . . . . . . . . . 400 Figure 9.31.4 Lightning equipotential bonding in a conventional
distribution board (outside of the outer wall) . . . . . . . 434
Figure 9.23.5 Service station with power distribution board, control
cabinet of the irrigation system, PC, interface and data Figure 9.32.1 Basic division of an installation into lightning protection
management system . . . . . . . . . . . . . . . . . . . . 400 zones (LPZs) . . . . . . . . . . . . . . . . . . . . . . . . 437
Figure 9.24.1 Principle of external and internal lightning protection for Figure 9.32.2 Air-termination system for a tank with air-termination
a church with steeple. . . . . . . . . . . . . . . . . . . . 403 rods and air-termination cables . . . . . . . . . . . . . . 438
Figure 9.24.2 Example of surge protective devices for the bell controller . 403 Figure 9.32.3 Shielding of structures by using natural components of
the building. . . . . . . . . . . . . . . . . . . . . . . . . 439
Figure 9.25.1 Type 3 surge arrester installed in an office luminaire. . . . 405 Figure 9.32.4 Surge protective devices in an intrinsically safe
Figure 9.25.2 Type 2 / type 3 surge arrester in a flush-mounted measuring circuit . . . . . . . . . . . . . . . . . . . . . . 440
enclosure installed on the mounting rail of a light strip . . 406
Figure 9.32.5 Surge protective devices for intrinsically safe measuring
Figure 9.25.3 Type 2 / type 3 surge arrester in a flush-mounted circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
enclosure installed on a cable tray . . . . . . . . . . . . . 406
Figure 9.32.6 Example of an intermeshed earth-termination system . . . 441
Figure 9.26.1 Surge protective devices for a lift. . . . . . . . . . . . . . 409
Figure 9.32.7 Example of the shield treatment of intrinsically safe cables . 442
Figure 9.27.1 Domelight located in the protected volume of an air-
termination rod on a non-metal roof of a structure with Figure 9.33.1 Isolated external lightning protection system for a gable
roof. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
external lightning protection system . . . . . . . . . . . . 411
Figure 9.27.2 Domelight located in the protected volume of an air- Figure 9.33.2 Isolated external lightning protection system for a gable
roof – Installation option 1 . . . . . . . . . . . . . . . . . 446
termination rod on a metal roof of a structure with metal
down conductor (steel frame, interconnected reinforced Figure 9.33.3 Isolated external lightning protection system for a gable
concrete or earthed metal facade) . . . . . . . . . . . . . 412 roof – Installation option 2 . . . . . . . . . . . . . . . . . 446
Figure 9.27.3 Domelight located in the protected volume of an air- Figure 9.33.4 Isolated external lightning protection system for a flat roof .447
termination rod on a metal roof of a structure equipped Figure 9.33.5 Isolated external lightning protection system for a flat
with conventional arresters . . . . . . . . . . . . . . . . 413 roof - Installation option 3 . . . . . . . . . . . . . . . . . 447
Figure 9.27.4 Domelight located on a non-metal roof of a structure Figure 9.33.6 Lightning equipotential bonding for incoming lines . . . . 449
without external lightning protection system . . . . . . . 414 Figure 9.34.1 Determination of the lightning risk for a yacht using the
Figure 9.28.1 Risk due to touch and step voltage. . . . . . . . . . . . . 417 rolling sphere method in case of class of LPS III . . . . . . 451
Figure 9.28.2 Installation of a down conductor at the side beams to Figure 9.34.2 Lightning current distribution on a yacht following a
ensure that the separation distance is maintained . . . . . 418 lightning strike to the mast. . . . . . . . . . . . . . . . . 451

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