Leica GR10 User Manual page 14

GR10/GR25, 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
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