Leica SPIDER GR30 User Manual page 15

Lightning Protection
Systems
Safety Directions
Lightning protection zones concept according to IEC 62305-4 (EN
62305-4)
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a Lightning electromagnetic pulse (LEMP)
b Lightning protection zone 0A (LPZ 0A)
c Lightning protection zone 0B (LPZ 0B)
d Lightning protection zone 1 (LPZ 1)
e Lightning protection zone 2 (LPZ 2)
f Lightning protection zone 3 (LPZ 3)
g Switching electromagnetic pulse (SEMP)
h Lightning equipotential bonding
Lightning current arrester (SPD Type 1)
i Local equipotential bonding
Surge arrester (SPD Type 2, SPD Type 3)
j Lightning equipotential bonding
Lightning current arrester
k Local equipotential bonding
Surge arrester
l Low voltage power supply system
m IT system
n Steel reinforcement
o Foundation earth electrode
p Ventilation
q Spatial shield
r Terminal device
s Air-termination system
t Down conductor system
Leica Geosystems recommends installing a Lightning Protection System (LPS)
at continuously operating reference stations.
An LPS consists of an external and an internal system.
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