Low surges possible
LPZ 3
Zone inside the building (can also the metal housing consumer) interference pulses through
LEMP surges
Division the building into lightning protection zones (LPZ)
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Chapter The internal lightning protection system
. Equi-
potential bonding created each transition from
one zone another.3.1 Lightning protection zone concept
The lightning protection zone (LPZ) concept described
in the international standard IEC 62305-4 has proved
to practical and efficient.
LPZ A
Unprotected zone outside the building. shielding against LEMP
LPZ Zone inside the building.
Benefits the lightning protection zone concept
• Minimisation the surge voltage couplings into
other cable systems arresting the energy-rich,
dangerous lightning currents directly the building
entry point and the cable’s point transition
between zones.
• Economic, easy plan individual protection
concept for new and old buildings and reconstruc-
tions. order achieve this, a
building's entire energy network split into lightning
protection zones. Metal parts are connected
directly the equipotential bonding, while surge pro-
tection corresponding the relevant requirements
class (type installed between the active
conductors and the earth potential.
A zone area building section which all
equipment requires the same level protection.
• Reduction malfunctions due magnetic fields. Metallic parts are connected to
the equipotential bonding directly.
Equipotential bonding created each transition
from one zone another.2. Low partial lightning energies possible
LPZ Zone inside the building.
• Local equipotential bonding within the protection
zone.3. Direct lightning strike, shielding against electromagnetic interfer-
ence pulses LEMP (Lightning Electromagnetic Pulse)
LPZ Zone protected external lightning protection system. The lightning protection
zone concept based the principle gradually
reducing surges safe level before they reach ter-
minals and cause damage
