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Figure 8.1.6.5 DEHNbloc Maxi S: Coordinated lightning current Figure 8.1.6.6 DEHNguard modular CI: Type 2 surge arrester with
arrester with integrated backup fuse for busbars integrated backup fuse
L L
overcurrent overcurrent
protective a protective
device device
SPD terminal device / terminal device /
installation
installation
SPD
b
MEB MEB
a + b ≤ 0.5 m (recommended)
c
c ≤ 0.5 m (recommended)
Figure 8.1.6.7 Recommended maximum cable lengths of surge protective devices in the cable branch (IEC 60364-5-53 (HD 60364-5-534))
L1 L1
L2 L2
L3 L3
PEN PEN
l b
y
l a
x x
MEB MEB
unfavourable favourable
Figure 8.1.6.8a Unfavourable cable routing from the consumer’s Figure 8.1.6.8b Favourable cable routing from the consumer’s point
point of view of view
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