DEHN + SÖHNE HVI power Montageanleitung Seite 57

Variable sealing end on isolated ring conductors / cappings of the roof parapet
If several parts of an installation are to be protected, it is not advisable to lead the HVI
ductor from each air-termination system to the earth-termination system. The HVI
tors arriving from the air-termination system can be connected to e.g. an isolated ring conductor or to
the capping of the roof parapet. From this isolated ring conductor (capping of the roof parapet), several
down conductors can routed to the earth-termination system. In this case, the partitioning coefficient
kc is reduced downstream of the isolated ring conductor. As a result, the separation distance "s" is also
reduced. Pre-assembled HVI
this purpose (see Fig. 10 and 11).
The isolated ring conductor must be installed on spacers and concrete bases e.g. on the roof level while
maintaining the calculated separation distance "s".
connection element
isolated ring conductor
spacer
Figure 10 Variable sealing end on an isolated ring conductor with HVI
power Conductors or HVI
®
variable three-legged
stand with equipotential
bonding element
Part No. 105 279
power long Conductors can be used for
®
variable sealing end
L=S x 2
air
350 mm - max. 1500 mm
(standard)
connection with the
equipotential bonding
system of the building
power Conductor"
®
power Con-
®
power Conduc-
®
HVI power Conductor
®
conductor holder
e.g. Part No. 253 333
25