Page 447 - 35_DS702_E_2014_Lightning_Protection_Guide

air-termination rod
(16/10 mm)

GRP / Al supporting tube supporting tube
with eight head-
tube holder less screws

2 x rail fixing clamps
pipe clamp
sealing tape
EB conductor

Components Part No.
EB conductor
Rafter holder 105 240
Roof bushing kit 105 245 Components Part No.
DEHNcon-H HVI Conductor I integrated in Rafter holder 105 240
the supporting tube with air-termination rod 819 245
Roof bushing kit 105 245
Rail fixing clamp 105 354
DEHNcon-H HVI Conductor I integrated in
Antenna pipe clamp 540 103 the supporting tube with air-termination rod 819 245
Figure 9.33.2 Isolated external lightning protection system for a Figure 9.33.3 Isolated external lightning protection system for a
gable roof – Installation option 1 gable roof – Installation option 2

¨ L1: Injury or death of persons (loss factor L1 includes the equivalent solutions. In the following, possible protection so-
lightning-related ignition source specified in TRBS 2152 lutions based on LPL II and the most important characteris-
Part 3 with regard to explosion protection) tics of the example depending on the type of installation are
¨ L2: Loss of service to the public described. A high-voltage-resistant, insulated down conduc-
¨ L4: Loss of economic value tor (HVI Conductor I) can be installed on (Figure 9.33.2) or
underneath (Figure 9.33.3) the roofing.
The example described below was calculated based on
IEC 62305-2 (EN 62305-2) by means of the DEHNsupport If conductors must be installed in Ex zone 1 or 2 due to lo-
software. We expressively point out that the procedure cal conditions, installation instructions No. 1501 must be ob-
shown is only an example. The solution in Figure 9.33.1 served. Figures 9.33.4 and 9.33.5 show an example of a
is not binding in any way and can be substituted by other flat-roofed gas pressure control and measurement system.

446 LIGHTNING PROTECTION GUIDE www.dehn-international.com