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The requirements for the inner zones must be defined accord- ary is formed by the shielding measures. The implementation
ing to the dielectric strength of the electrical and electronic of the lightning protection zone concept is an important pre-
systems to be protected. requisite for safe and undisturbed operation.
Equipotential bonding must be established at the boundary of To ensure the required availability of the installation, a lot of
each inner zone for all incoming metal parts and supply lines information (e.g. on the use of the building, earth-termination
either directly or by means of suitable SPDs. The zone bound- system, electrical installation, computer system) must be col-

LPZ 0 A LPZ 0 A

LPZ 0 B LPZ 0 B
LPZ 2 LPZ 2

LPZ 2 LPZ 1 LPZ 2 LPZ 1
LPZ 0 B

LPZ 3

LPZ 2 LPZ 1 LPZ 2

LPZ 1 LPZ 1

LPZ 2 LPZ 2
MEB MEB

Figure 7.1.2b Lightning protection zone concept according to IEC 62305-4 (EN 62305-4)

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