Leica GM30 User Manual page 13

Lightning
Protection Systems
GR30/GM30/GR50, Safety Directions
Leica Geosystems recommends installing a Lightning Protection System (LPS) at
continuously operating reference stations.
An LPS consists of an external and an internal system.
External system
Component
Air termination system
Down-conductor system
Bonding network
Earth-termination system
Internal system
Component
Equipotential Bonding Bar (EBB)
Metal partition panel
Suitable cable routing
No crossed cables coming from
different LPZ's
Surge Protective Device (SPD)
Magnetic shields
Suitable routing of wiring
Example: External system installation on a building
a
b
c
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Example Purpose
Lightning rods Interception of direct strikes
- Conduction of lightning current
safely towards earth
Grounding Dispersion of the current into the
earth
Purpose
Equipotentialisation between all electric
conducting parts and the protective earth
conductor
Attenuate transient and magnetic induced
fields
Equipotential bonding for all metal compo-
nents and utility lines entering the building or
structure
Examples for utility lines:
Communication lines, antenna cables
Attenuation of the inducing magnetic field
Reduction of the induction loop
d
e
a) GNSS antenna
b) Air termination
c) Down conductors
f
d) Solar panles
e) Bonding network
f) Earth termination
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