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Chapter The external lightning protection system
. external cameras, luminaires,
supply lines, systems, etc.g. earthing system closest
point the equipotential bonding) very long the
calculation (see Table 2.7) due the building dimen-
sions.1
2
3
1
2
3
Separation distance (s)
Length L
MEB
Without equipotential areas With equipotential areas
Separation distance for high buildings with and without equipotential area reference level
2. every 2nd or
3rd floor using:
• Lightning protection equipotential bonding through
suitable lightning arrestors and surge protection
devices for power and communication units
• Meshed earthing system according DIN 1804
• Meshed ceiling reinforcement (multiple times the
building)
5 according DIN 62305-4
• Connection reinforcement every m
• Lightning protection equipotential bonding all
metallic electrical cables running into the equipo-
tential levels (e.g.
Creation equipotential areas, e.g.10 Equipotential areas the reference layer for
calculating the separation distance high buildings
In high buildings, conventional separation distance
calculations can create separation distances which
can longer implemented, the length the
next reference level (e.2.
To still able plan and install lightning protec-
tion system according IEC/EN 62305-3, the cre-
ation equipotential layers should taken into ac-
count early the project planning
