addition, galvanic element
is created, which accelerates corrosion the contact
surface.
The following figure shows the use bimetal connect-
ors copper gutter which aluminium round
conductor attached. connection between two different materi-
als that are not recommended joined re-
quired, bi-metal connectors can used. Points increased risk cor-
rosion, such insertion points into the concrete or
soil, must corrosion-protected.2. suitable coating
must applied corrosion protection connection
points the ground.7.1 Materials for air-termination and conductor
systems
The following materials are preferred for use extern-
al lightning protection systems: Hot galvanised steel,
rustproof steel, copper and aluminium.
Variable bi-metal quick connector with bi-metal intermedi-
ate plate (copper/aluminium)
TBS
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Chapter The external lightning protection system
.
Corrosion
A risk corrosion occurs especially when joining dif-
ferent material types. For this reason, copper parts
may installed above galvanised surfaces above
aluminium parts copper particles worn away by
rain other environmental influences can penetrate
the galvanised surface
